REV250521
CYK-24 Inverter Series
For 9,000-18,000 BTU/hr Systems
Quantum Ultra (R-454B) - CK Indoor and YN Outdoor
Installation &
User Manual
IMPORTANT NOTICE:
Read this manual carefully before installing or
operating your new air conditioning system. Be
sure to save this manual for future reference.
DUCTLESS MINI SPLIT SYSTEM AIR CONDITIONER / HEAT PUMP
Table of Contents
19
1 Safety Precautions............................ 2
17
20
2 Product Overview.............................
3
Product Installation...........................
4
Indoor Unit Installation......................
38
5 Outdoor Unit Installation................... 27
34
42
6 Refrigerant Piping Connection........
7
Wiring Precautions..........................
8
Air Evacuation.................................
Air Conditioner Installation & User Manual
11
Panel Installation.............................
46
10 Electrical & Gas Leak Checks......... 45
9
Note on Adding Refrigerant.............
44
13
Unpacking & Packing.....................
55
12 Test Run......................................... 53
14
Operation Instructions....................
56
Read this Manual
The manual provides helpful hints on using and
maintaining the air conditioner properly. Performing
preventive care can save time and money over the
lifespan of the air conditioner. These instructions
may not cover every possible condition of use, so
common sense and attention to safety is required
when installing, operating, and maintaining this
product.
15
Care & Maintenance......................
59
T
Troubleshooting..............................
63
1
Air Conditioner Installation & User Manual
Safety Precautions
1
It is important to read this section before operating and installing the system. Incorrect installation due to
ignoring instructions can cause serious damage or injury. The seriousness of potential damage and injuries is
classified as either a warning or caution.
Explanation of Symbols
WARNING
This symbol indicates the possibility of personal injury or loss of life.
CAUTION
This symbol indicates the possibility of property damage or serious consequences.
WARNING
Children aged 8 and above, as well as individuals with lack of experience or reduced physical, sensory, or
mental capabilities can use the appliance if supervision or instruction is given. Do not allow children to play with
or near the appliance. Children or untrained personnel should be restricted from cleaning and performing
maintenance on the appliance, unless they're given supervision.
WARNINGS FOR PRODUCT USE
• Turn off the air conditioner and disconnect the power before cleaning, installing, or repairing the system.
Failure to do so can cause electric shock.
• If an abnormal situation arises (such as a burning smell), immediately turn off the unit and disconnect the
power. Call the dealer for instructions to avoid electrical shock, fire, or injury.
• Do not insert fingers, rods, or other objects into the air inlet or outlet. This could cause injury because the fan
rotates at high speeds.
• Do not use flammable sprays such as hair spray, lacquer, or paint near the unit. This may cause fire or
combustion.
• Do not operate the air conditioner in locations near or around combustible gases. Emitted gas may collect
around the unit and cause an explosion.
• Do not operate the air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to
water can cause electrical components to short circuit.
• Do not expose your body directly to cool air for prolonged durations of time.
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to
avoid oxygen deficiency.
• In certain functional environments (such as kitchens, server rooms, etc.), it is highly recommended to use
specifically designed air-conditioning units.
2
Air Conditioner Installation & User Manual
Safety Precautions
1
WARNINGS FOR PRODUCT INSTALLATION
• Turn off the air conditioner and disconnect its power supply before installing or repairing the system. Failure to
do so can cause electric shock.
• An authorized dealer or specialist must perform the installation. Incorrect installation can cause water leakage,
electrical shock, or fire.
• Perform the installation according to the instructions in this manual. Improper installation can cause water
leakage, electrical shock, or fire.
• Contact an authorized service technician to maintain and repair the unit.
• Install the appliance in accordance with national wiring regulations. Only use the included accessories, parts,
and specified parts for installation. Using non-standard parts can cause water leakage, electrical shock, fire, or
unit failure.
• Install the unit in a firm location that can support the unit's weight. If the chosen location cannot support the
unit's weight or the installation is done incorrectly, the unit may drop and cause serious injury or damage.
• For units with an auxiliary electric heater, do not install the unit within 3 feet (1 m) of any combustible materials.
• For units that have a wireless network function (USB device access replacement), professional staff must carry
out the maintenance operations.
• Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible gas
accumulates around the unit, it could cause fire.
• Do not turn on the power until all work has been completed.
• When moving or relocating the air conditioner, consult experienced service technicians for the disconnection
and reinstallation of the unit.
• For information on installing the appliance to its support, read the Indoor Unit Installation and Outdoor Unit
Installation sections.
ELECTRICAL WARNINGS
• Only use the specified wire. If the wire is damaged, it must be replaced by the manufacturer, service agent, or
a similarly qualified individual in order to avoid a hazard.
• Properly ground the product during installation to avoid electrical shock.
• Incorporate disconnection in the fixed wiring, according to the wiring rules.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or
electric shock.
3
Air Conditioner Installation & User Manual
Safety Precautions
1
• For all electrical work, follow the local and national wiring standards, regulations, and installation manual.
Connect the cables tightly, then clamp them securely to prevent external forces from damaging the terminal.
Improper electrical connections can result in electrical shock or fire. Complete the electrical connections
according to the Electrical Connection diagram located on the panels of the indoor and outdoor units.
• Properly arrange all wiring to ensure that the control board cover can close correctly. If the control board cover
is not closed properly, it can lead to corrosion and cause the connection points on the terminal to heat up and
catch fire. It can also cause electrical shock.
• If connecting power to fixed wiring, incorporate an all-pole disconnection device in the fixed wiring. Ensure that
the device is in accordance with the wiring rules.
• Turn off the air conditioner and disconnect the power if the unit will not be used for a long duration of time.
• Turn off and unplug the unit during storms.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electrical shock.
• Do not use the device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open, or if the
humidity is considerably high.
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner's circuit board (PCB) is designed with a fuse to provide overcurrent protection. The
specifications of the fuse are printed on the circuit board. For example: T3.15AL/250VAC, T5AL/250VAC,
T3.15A/250VAC, T5A/250VAC, T20A/250VAC, T30A/250VAC, etc.
Note: Only use the blast-proof ceramic fuse.
CAUTION
4
CLEANING & MAINTENANCE WARNINGS
• Turn off the device and disconnect its
power supply
before cleaning. Failure to do so can cause an electrical
shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause
fire or deformation.
Indoor Unit Outdoor Unit
9K
YN009GMSI24RPG
580m³/h
342CFM
600m³/h
353CFM
680m³/h
400CFM
CK018GMSILDFHG
CK012GMSILDFHG
18K
12K
Model
Indoor Unit Outdoor Unit
CK018GMSILDFHG
CK012GMSILDFHG
9K
18K
12K
Model
Indoor Nominal
Air Volume
CK009GMSILDFHG
YN012GMSI24RPG
YN018GMSI24RPG
CK009GMSILDFHG
YN018GMSI24RPG
YN012GMSI24RPG
YN009GMSI24RPG
Air Conditioner Installation & User Manual
Safety Precautions
1
The information in the following table is only applicable to models without refrigerant sensors:
WARNING FOR USING FLAMMABLE REFRIGERANTS
• Do not use means to accelerate the defrosting and cleaning processes, other than those recommended by
the manufacturer.
• Store the appliance in a room without continuously operating ignition sources. For example: open flames, an
operating gas appliance, or an operating electric heater.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odor.
R-R-454B refrigerant charge amount and minimum room are
The machine you purchased may be one of the types listed in the table below. The indoor and outdoor units are
designed to be used together. Check the machine that was purchased. Install the indoor unit at least 7.6 feet (2.3
m) above the floor. The height of the room cannot be less than the indoor unit's installed height. The minimum
room area of operation or storage is as specified in the following table:
For the units with refrigerant sensors, when the unit detects a refrigerant leak, the minimum airflow of the indoor
unit is as follows:
5
m
c
or m
REL
[ozs/kg]
7.6/2.3 7.9/2.4 8.6/2.6 9.2/2.8
<=62.6/1.776
Area
formula
h
inst
[ft/m]
12/1.10
63.4/1.8
70.5/2.0
77.5/2.2
84.6/2.4
91.7/2.6
98.7/2.8
105.8/3.0
112.8/3.2
119.9/3.4
126.9/3.6
134/3.8
141.0/4.0
148.1/4.2
155.1/4.4
162.2/4.6
169.2/4.8
176.3/5.0
47/4.35
52/4.83
58/5.31
63/5.80
68/6.28
73/6.76
78/7.24
84/7.73
89/8.21
94/8.69
99/9.17
104/9.66
110/10.14
115/10.62
120/11.11
125/11.59
130/12.07
51/4.68
56/5.20
62/5.72
68/6.24
73/6.76
79/7.28
84/7.80
90/8.32
96/8.84
101/9.36
107/9.88
118/10.92
124/11.44
129/11.96
135/12.48
140/13.00
55/5.07
61/5.64
67/6.20
73/6.76
79/7.32
85/7.89
91/8.45
97/9.01
104/9.58
110/10.14
122/11.27
128/11.83
134/12.39
140/12.96
146/13.52
152/14.08
6.0~7.3/
1.8~2.2
60/5.53
67/6.15
73/6.76
80/7.38
86/7.99
93/8.60
100/9.22
106/9.83
113/10.45
120/11.06
126/11.68
133/12.29
139/12.90
146/13.52
153/14.13
159/14.75
166/15.36
57/5.29
64/5.88
70/6.47
83/7.64
89/8.23
95/8.82
102/9.41
108/9.99
114/10.58
121/11.17
127/11.76
133/12.34
140/12.93
146/13.52
152/14.11
159/14.69
76/7.06
9.9/3.0
44/4.06
49/4.51
54/4.96
59/5.41
64/5.86
68/6.31
73/6.76
78/7.21
83/7.66
88/8.11
93/8.56
97/9.01
102/9.46
107/9.91
112/10.37
117/10.82
122/11.27
112/10.40
116/10.70
Air Conditioner Installation & User Manual
Safety Precautions
1
A
min
[ft
2
/ m
2
]
• A
min
is the required minimum room area in ft
2
/m
2
.
• M
c
is the actual refrigerant charge in the system in oz/kg
• M
REL
is the refrigerant releasable charge in oz/kg (applicable to the units with refrigerant
sensors only)
• h
inst
is the height of the bottom of the appliance relative to the floor of the room after
installation.
WARNING: The minimum room area or minimum room of conditioner space is based on the
releasable charge and total system refrigerant charge.
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Safety Precautions
1
7
1. Installation
(Where refrigerant pipes are allowed)
- Any individual who is involved with working on or breaking into a refrigerant circuit must hold a valid certificate
from an industry-accredited assessment authority. The certificate authorizes the individual's competence for
handling refrigerants safely in accordance with the specifications of an industry recognized assessment.
- Maintenance and repairs requiring the assistance of other skilled personnel must be carried out under the
supervision of the individual competent in the use of flammable refrigerants.
- Keep the installation of the pipe-work to a minimum.
- Protect the pipe-work from physical damage.
- Ensure that the refrigerant pipes comply with national gas regulations.
- Ensure that the mechanical connections are accessible for maintenance purposes.
- Do not allow foreign matter (oil, water, etc.) from entering the piping. In addition, when storing the piping,
securely seal the opening by pinching, taping, etc.
- Competent individuals must carry out all working procedures that affect safety.
- Store the appliance in a well-ventilated area where the room size corresponds to the room area as specified for
operation.
- Test the joints using detection equipment with a capability of 5g/year of refrigerant or better. After installation,
ensure that the equipment is at a standstill and maintained under operating pressure, or at least the minimum
standstill pressure.
- In cases that require mechanical ventilation, ensure that the ventilation openings are kept clear of obstruction.
- Leak Detection System Installed: Power the unit except for service.
For units with refrigerant sensors, when the sensor detects refrigerant leakage, the indoor unit will display an
error code and emit a buzzing sound, the outdoor unit's compressor will immediately stop, and the indoor fan will
start running. The service life of the refrigerant sensor is 15 years. When the refrigerant sensor malfunctions, the
indoor unit will display the "FHCC" error code. The refrigerant sensor cannot be repaired and can only be
replaced by the manufacturer. Replace the sensor with one specified by the manufacturer.
(Applicable to units with refrigerant sensors only.)
2. When a flammable refrigerant is used, the requirements for the installation space of the appliance and/or
ventilation are determined according to the:
- Mass charge amount (M) used in the appliance.
- Installation location.
- Ventilation type of the location or appliance.
- Protect the piping material and pipe routing from physical damage during operation and service. Ensure that
the piping material and pipe routing are in compliance with national and local codes and standards, such as
ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints
must be accessible for inspection prior to being covered or enclosed.
- Protect piping, fittings, and protection devices from adverse environmental effects. For example, water
collecting and freezing in relief pipes or the accumulation of dirt and debris.
Air Conditioner Installation & User Manual
Safety Precautions
1
- Ensure that the piping in the refrigerant system is designed and installed to minimize the likelihood of hydraulic
shock damaging the system.
- Before applying any insulation, protect the steel pipes and components against corrosion with a rustproof
coating.
- Take precautions to avoid excessive vibration or pulsation.
- The minimum floor area of the room is mentioned in the form of a table or single figure without reference to a
formula.
- After completing the field piping for split systems, pressure test the field pipework with an inert gas. Then,
vacuum test the pipework before refrigerant charging. Ensure that the testing is completed according to the
following requirements:
a. The minimum test pressure for the low side of the system must be the low side design pressure and the
minimum test pressure for the high side of the system must be the high side design pressure, unless the high
side of the system cannot be isolated from the low side of the system. If the high side cannot be isolated from the
low side of the system, the entire system must be pressure tested to the low side design pressure.
b. After removing the pressure source, maintain the test pressure for at least 1 hour, ensuring that there is no
decrease of pressure, which is indicated by the test gauge. Ensure that the test gauge resolution does not
exceed 5% of the test pressure.
c. During the evacuation test, after achieving a vacuum level specified in the manual, isolate the refrigeration
system from the vacuum pump and ensure that the pressure does not rise above 1,500 microns within 10
minutes. The appropriate vacuum pressure level is specified in the manual, and must not be less than 500
microns or the value required for compliance with national and local codes and standards. The codes and
standards may vary between residential, commercial, and industrial buildings.
- Field-made refrigerant indoor joints must be tightness tested according to the following requirements: The test
method must have a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0.25 times
the maximum allowable pressure. No leak should be detected.
3. Qualification of Workers
The working personnel must be qualified to perform any maintenance, service, and repair operations. Competent
individuals must carry out working procedures that affect safety means. The competent individual must complete
the training by national training organizations or manufacturers that are accredited to teach the relevant national
competency standards set in legislation. The individual's competence must be documented by a certificate. All
training must follow the ANNEX HH requirements of UL 60335-2-40 4th Edition.
Examples for such working procedures are:
- breaking into the refrigerating circuit.
- opening of sealed components.
- opening of ventilated enclosures.
4. Well-Ventilated Area
Before breaking into the system or conducting any hot work, ensure that the area is in the open or is adequately
ventilated. Maintain a degree of ventilation while the work is being carried out. Ensure that the ventilation safely
disperses any released refrigerant and preferably expels it externally into the atmosphere.
5. Cabling
Confirm that the cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges, or any
other adverse environmental effects. The check should also take into account the effects of aging or continual
vibration from sources such as compressors or fans.
8
Air Conditioner Installation & User Manual
Safety Precautions
1
6. Detection of Flammable Refrigerants
Do not use potential sources of ignition for searching or detecting refrigerant leaks. Do not use a halide torch or
detector using a naked flame. Ensure that the detector is not a potential source of ignition and is suitable for the
refrigerant used. Leak detection equipment must be set at a percentage of the refrigerant LFL, and calibrated to
the refrigerant employed. Confirm the appropriate percentage of gas (25% maximum).
The following leak detection methods are deemed acceptable for refrigerant systems:
Electronic leak detectors: This type of detector can detect refrigerant leaks. However, in the case of flammable
refrigerants, the sensitivity may not be adequate and need recalibration. Calibrate the detection equipment in a
refrigerant-free area.
Leak detection fluids: The bubble method and fluorescent method agents are examples of leak detection
fluids. These are suitable to use with most refrigerants. Avoid using detergents containing chlorine as the
chlorine may react with the refrigerant and corrode the copper pipe-work.
If a leak is suspected, remove or extinguish all naked flames.
If a refrigerant leak is found and requires brazing, recover all the refrigerant from the system or use the shut off
valves to isolate the refrigerant in a part of the system remote from the leak. See the following instructions for
removing refrigerant.
7. Removal and Evacuation
Use conventional procedures when breaking into the refrigerant circuit to make repairs or for any other purpose.
However, for flammable refrigerants, it is important to follow this best practice since flammability is a
consideration.
Follow this procedure:
- Safely remove refrigerant following local and national regulations.
- Evacuate.
- Purge the circuit with inert gas (optional for A2L).
- Evacuate (optional for A2L).
- Continuously flush or purge with inert gas when using a flame to open the circuit.
- Open the circuit.
Recover the refrigerant charge into the correct recovery cylinders if venting is not allowed by local and national
codes. For appliances containing flammable refrigerants, purge the system with oxygen-free nitrogen to render
the appliance safe from flammable refrigerants. If needed, repeat this process several times. Do not use
compressed air or oxygen to purge refrigerant systems.
For appliances containing flammable refrigerants, purge the refrigerant by breaking the vacuum in the system
with oxygen-free nitrogen and continuing to fill until the working pressure is achieved. Then, vent to atmosphere
and finally pull down to a vacuum (optional for A2L). Repeat this process until no refrigerant is present within
the system (optional for A2L). When using oxygen-free nitrogen, vent the system down to atmospheric pressure
to enable work to take place. Ensure that the outlet for the vacuum pump is not close to any potential ignition
sources and ventilation is available.
9
Air Conditioner Installation & User Manual
Safety Precautions
1
8. Charging Procedures
In addition to conventional charging procedures, follow these requirements:
- Use only appropriate tools when completing work. In case of uncertainty, consult the manufacturer of the tools
for information on use with flammable refrigerants.
- Ensure that the contamination of different refrigerants does not occur when using charging equipment. Hoses
or lines must be as short as possible to minimize the amount of refrigerant contained in them.
- Keep the cylinders upright.
- Ensure that the refrigerant system is earthed before charging the system with refrigerant.
- Label the system when charging is complete (if not already).
- Take extreme care to not overfill the refrigeration system.
- Prior to recharging the system, it must be pressure tested with oxygen-free nitrogen. Leak test the system after
completing the charging but prior to commissioning. Carry out a follow up leak test before leaving the site.
9. Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good
practice to remove refrigerants safely. When transferring refrigerant into cylinders, ensure that only appropriate
refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total
system charge are available. Designate all the cylinders intended to be used.
Servicing Information
1. Inspect the Area
Before working on systems containing flammable refrigerants, safety checks are required to ensure that the risk
of ignition is minimized. The following precautions must be complied with prior to conducting repairs on the
system.
2. Work Procedure
To minimize the risk of flammable gas or vapor presence, conduct work using controlled procedures.
3. General Work Area
Inform all maintenance staff and individuals working in the local area about the nature of the work being
performed. Avoid working in confined spaces. Section off the area around the workspace. Ensure that the area
is safe by controlling flammable materials.
4. Check for Refrigerant
Check the area with an appropriate refrigerant detector before and during work to ensure that the technician is
aware of potentially flammable atmospheres. Ensure that the leak detection equipment is suitable for flammable
refrigerants, i.e. non-sparking, adequately sealed, or intrinsically safe.
5. Fire Extinguisher
If conducting hot work on the refrigeration equipment or any associated parts is needed, appropriate fire
extinguishing equipment must be available. Keep a dry powder or CO2 fire extinguisher adjacent to the charging
area.
10
Air Conditioner Installation & User Manual
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11
6. No Ignition Sources
Individuals carrying out work involving exposed pipework on a refrigerant system are prohibited from using any
sources of ignition that may lead to a risk of fire or explosion. All possible ignition sources, such as cigarette
smoking, must be performed at a sufficient distance from the installation or maintenance site. Before conducting
work on the equipment, the surrounding area must be surveyed to ensure that there are no flammable hazards
or ignition risks. No Smoking signs must be displayed.
7. Well-Ventilated Area
Ensure that the area is open and well-ventilated before accessing the system or performing any work that
generates heat. Ventilation must be maintained to a certain degree while work is being carried out. The
ventilation should safely disperse any released refrigerant and expel it externally into the atmosphere.
8. Inspect the Refrigeration Equipment
When changing electrical components, they must be fit-for-purpose and meet the correct specifications. Follow
the manufacturer's maintenance and service guidelines at all times. If in doubt, consult the manufacturer's
technical department for assistance.
For installations using flammable refrigerants, check the following:
- Ensure that the charge size is appropriate for the room in which the refrigerant-containing parts are installed.
- Confirm the ventilation machinery and outlets are operating adequately and not obstructed.
- If an indirect refrigerating circuit is being used, check the secondary circuit for the presence of refrigerant.
- Confirm the equipment markings are visible and legible. Correct markings and signs that are illegible.
- Install the refrigeration pipe or components in a position that minimizes the risk of corrosion from harmful
substances, unless constructed of corrosion-resistant materials and suitably protected.
9. Inspect the Electrical Devices
Repairing and maintaining electrical components must include initial safety checks and component inspections.
If a fault exists that could compromise safety, do not connect the electrical supply to the circuit until the fault is
resolved. If the fault cannot be immediately corrected but it is necessary to continue operation, a temporary
solution must be implemented. If a temporary solution is implemented, it must be reported to the owner of the
equipment, ensuring both parties are informed.
Initial safety checks must include the following:
- Confirm the capacitors are discharged. Ensure that this is done in a safe manner to avoid the possibility of
sparking.
- Ensure that no live electrical components and wiring are exposed while charging, recovering, or purging the
system.
- Confirm there is continuity of earth bonding.
10. Replace Sealed Electrical Components If It's Damaged.
11. Replace Intrinsically Safe Components If It's Damaged.
12. Cabling
Confirm that the cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges, or
any other adverse environmental effects. The check should also take into account the effects of aging or
continual vibration from sources such as compressors or fans.
Air Conditioner Installation & User Manual
Safety Precautions
1
13. Detection of Flammable Refrigerants
Do not use potential sources of ignition for searching or detecting refrigerant leaks. Do not use a halide torch or
detector using a naked flame. Ensure that the detector is not a potential source of ignition and is suitable for the
refrigerant used. Leak detection equipment must be set at a percentage of the refrigerant LFL, and calibrated to
the refrigerant employed. Confirm the appropriate percentage of gas (25% maximum).
The following leak detection methods are deemed acceptable for refrigerant systems:
Electronic leak detectors: This detector can detect refrigerant leaks. However, in the case of flammable
refrigerants, the sensitivity may not be adequate and need recalibration. Calibrate the detection equipment in a
refrigerant-free area.
Leak detection fluids: The bubble method and fluorescent method agents are examples of leak detection fluids.
These are suitable to use with most refrigerants. Avoid using detergents containing chlorine as the chlorine may
react with the refrigerant and corrode the copper pipe-work.
If a leak is suspected, remove or extinguish all naked flames.
If a refrigerant leak is found and requires brazing, recover all the refrigerant from the system or use the shut off
valves to isolate the refrigerant in a part of the system remote from the leak. See the following instructions for
removing refrigerant.
14. Removal and Evacuation
Use conventional procedures when breaking into the refrigerant circuit to make repairs or for any other purpose.
However, for flammable refrigerants, it is important to follow this best practice since flammability is a
consideration.
Follow this procedure:
- Safely remove refrigerant following local and national regulations.
- Evacuate.
- Purge the circuit with inert gas (optional for A2L).
- Evacuate (optional for A2L).
- Continuously flush or purge with inert gas when using a flame to open the circuit.
- Open the circuit.
Recover the refrigerant charge into the correct recovery cylinders if venting is not allowed by local and national
codes. For appliances containing flammable refrigerants, purge the system with oxygen-free nitrogen to render
the appliance safe from flammable refrigerants. If needed, repeat this process several times. Do not use
compressed air or oxygen to purge refrigerant systems.
For appliances containing flammable refrigerants, purge the refrigerant by breaking the vacuum in the system
with oxygen-free nitrogen and continuing to fill until the working pressure is achieved. Then, vent to atmosphere
and finally pull down to a vacuum (optional for A2L). Repeat this process until no refrigerant is within the system
(optional for A2L). When using oxygen-free nitrogen, vent the system down to atmospheric pressure to enable
work to take place. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and
ventilation is available.
12
Air Conditioner Installation & User Manual
Safety Precautions
1
15. Charging Procedures
In addition to conventional charging procedures, follow these requirements:
- Use only appropriate tools when completing work. In case of uncertainty, consult the manufacturer of the tools
for use with flammable refrigerants.
- Ensure that the contamination of different refrigerants does not occur when using charging equipment. Hoses
or lines must be as short as possible to minimize the amount of refrigerant contained in them.
- Keep the cylinders upright.
- Ensure that the refrigerant system is earthed before charging the system with refrigerant.
- Label the system when charging is complete (if not already).
- Take extreme care to not overfill the refrigeration system.
- Prior to recharging the system, it must be pressure tested with oxygen-free nitrogen. Leak test the system after
completing the charging but prior to commissioning. Carry out a follow up leak test before leaving the site.
16. Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment
and all its details. It is recommended good practice that all refrigerants are recovered safely. Prior to carrying out
the task, take an oil and refrigerant sample in case an analysis is required prior to re-using the recovered
refrigerant. It is essential that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operations.
b) Isolate the system electrically.
c) Before attempting the procedure ensure that
- Mechanical handling equipment is available for handling refrigerant cylinders.
- All personal protective equipment is available and being used correctly.
- A competent individual is supervising the recovery process at all times.
- Recovery equipment and cylinders conform to the appropriate standards.
d) Pump down the refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that the refrigerant can be removed from various parts of the
system.
f) Make sure that the cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate it in accordance with the instructions.
h) Do not overfill cylinders (no more than 80% volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly and the process is completed, make sure that the cylinders and
equipment are removed from the site promptly and all isolation valves on the equipment are closed off.
k) Do not charge recovered refrigerant into another refrigeration system, unless it has been cleaned and
checked.
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Air Conditioner Installation & User Manual
Safety Precautions
1
17. Labeling
Label the equipment stating that it has been de-commissioned and emptied of refrigerant. Make sure to date and
sign the label. For appliances containing flammable refrigerants, ensure that there are labels on the equipment
stating it contains flammable refrigerant.
18. Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good
practice to remove refrigerants safely. When transferring refrigerant into cylinders, ensure that only appropriate
refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total
system charge are available. Designate all the cylinders intended to be used for the recovered refrigerant and
label them for that refrigerant (i.e., special cylinders for the recovery of refrigerant). Cylinders must be complete
with pressure-relief valves. The associated shut-off valves must be in good working order. Evacuate empty
recovery cylinders and, if possible, allow them to cool before recovery occurs.
The recovery equipment must be in good working condition with a set of instructions concerning the equipment
that is at hand. In addition, the recovery equipment must be suitable for the recovery of the flammable
refrigerant. If in doubt, consult the manufacturer. In addition, a set of calibrated weighing scales must be
available and in good working order. Hoses must be complete with leak-free disconnect couplings and in good
condition.
The recovered refrigerant must be processed according to local legislation in the correct recovery cylinder. In
addition, the relevant waste transfer note must be arranged. Do not mix refrigerants in the recovery unit and
especially not in the cylinders.
If removing compressors or compressor oils, ensure that they have been evacuated to an acceptable level to
make sure that flammable refrigerant does not remain with the lubricant. The compressor body must not be
heated by an open flame or other ignition sources to accelerate this process. When oil is drained from a system,
it must be carried out safely.
19. Transportation, Marking, and Storage for Units
- Transport equipment containing flammable refrigerants (Compliance with the transport regulations).
- Mark the equipment using signs (Compliance with local regulations).
- Dispose of equipment using flammable refrigerants (Compliance with national regulations).
- Store the equipment/appliance (Compliance with the manufacturer's instructions).
- Store packed (unsold) equipment. Construct the storage package protection in a way that potential
mechanical damage to the equipment inside the package will not cause a leak of the refrigerant charge. Local
regulations determine the maximum amount of equipment permitted to be stored together.
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Air Conditioner Installation & User Manual
Safety Precautions
1
CAUTION
WARNING
This symbol shows that this appliance used a flammable
refrigerant. If the refrigerant is leaked and exposed to an
external ignition source, there is a risk of fire.
This symbol shows that the operation manual should be read
carefully.
This symbol shows that information is available such as
the operating manual or installation manual.
This symbol shows that a service personnel should be
handling this equipment with reference to the installation
manual.
Explanation of symbols displayed on the indoor or outdoor units
CAUTION
CAUTION
CAUTION
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Air Conditioner Installation & User Manual
Product Overview
2
Note
Illustrations in this manual are for explanatory purposes. The actual shape of the indoor unit may be slightly
different. The actual shape shall prevail.
Connection cable
(purchase separately)
Refrigerant piping
(purchase separately)
Outdoor unit power cable
(purchase separately)
Outdoor unit
1
4
7
2
5
8
3
6
Display panel
9
10
10
2
2
4
9
12
1
7
6
5
3
11
11
12
Service disconnect
Installation par
t
Drain pipe
(purchase separately)
Air inlet (with air filter in it)
8
Air outlet (Air flow louver)
Remote controller
Remote controller holder
(purchase separately)
Note: Select a service disconnect meeting the requirements of the local, regional, and national codes.
16
Air Conditioner Installation & User Manual
Product Overview
2
Unit Parts
17
Air Conditioner Installation & User Manual
Product Installation
3
Accessories
The air conditioning system comes with the following accessories. Use all of the installation parts and
accessories to properly install the air conditioner. Improper installation may result in water leakage, electrical
shock and fire, or cause the equipment to fail. The items that are not included with the air conditioner must be
purchased separately.
Liquid Side Gas Side
9K
12K
18K
Connecting
pipe
assembly
Name Model
Pipe Specification
Remark
Φ
1/4 in (
Φ
6.35 mm)
Φ
3/8 in (
Φ
9.52 mm)
Φ
1/2 in (
Φ
12.7 mm)
Pipes are not included in the
accessories and need to be
purchased separately from the
local dealer.
Φ
1/4 in (
Φ
6.35 mm)
Φ
1/4 in (
Φ
6.35 mm)
Φ
3/8 in (
Φ
9.52 mm)
Note: Install the panel after the wiring and piping have been completed.
18
Optional Accessories
There are two types of remote controls: Wired and wireless.
Select a remote controller based on customer preferences and requirements. Install the remote control in an
appropriate place. Refer to catalouges and technical literature for guidance on selecting a suitable remote
controller.
Air Conditioner Installation & User Manual
Indoor Unit Installation
4
Select the Installation Location
1
Note
Before installing the indoor unit, choose an appropriate location. The following are standards that will help
choose an appropriate location for the unit.
Before Installation:
• Determine the route for moving the unit to the installation site.
• First unseal and unpack the unit. Then, hold the seats of the hanger (4 pieces) to move the unit. Refrain
from exerting force on other parts of the unit, especially the refrigerant piping, water discharge piping, and
plastic parts.
Enough room exists for
installation and maintenance.
Enough room exists for connecting
the pipe and drainpipe.
The ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
The air inlet and outlet
are not blocked.
The airflow can fill
the entire room.
There is no direct radiation
from heaters.
Proper installation locations must meet the following standards:
Areas with oil drilling or fracking
Coastal areas with high salt content in the air
Areas with caustic gases in the air, such as hot
springs
Areas that experience power fluctuations, such as
factories
Enclosed spaces, such as cabinets
Kitchens that use natural gas
Areas with strong electromagnetic waves
Areas that store flammable materials or gas
Rooms with high humidity, such as bathrooms or
laundry rooms
Do not install the unit in the following locations:
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Air Conditioner Installation & User Manual
Indoor Unit Installation
4
Confirm Various Sizes
2
Installation Place
(Unit: inch/mm)
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Air Conditioner Installation & User Manual
Indoor Unit Installation
4
(unit: inch/mm)
Indoor Parts Installation Size
3
Indoor Unit Installation
Ensure that only specified components are used for the installation.
Step 1: (Model A with circuit breaker)
1. Remove the four screws to open the indoor
control box and circuit breaker box.
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Air Conditioner Installation & User Manual
Indoor Unit Installation
4
2. Remove the pre-cutting cover on the circuit
breaker box.
3. Connect the wire to the air breaker
according to the wire connecting diagram.
WARNING
The ground wire should be tightened firmly
without loosening.
4. Fasten and fix the wire body with a tie.
5. Install the circuit breaker cover by fixing the two
screws.
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Air Conditioner Installation & User Manual
Indoor Unit Installation
4
Step 1: (Model B with circuit breaker)
1. Remove the four screws to open the indoor
control box and terminal box.
2. Remove the pre-cutting cover on the terminal box.
Remove the two screws, then take out the clip.
3. Connect the wire to the terminal according
to the wire connecting diagram.
4. Fix the wire with the clip by using the two
screws.
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Air Conditioner Installation & User Manual
Indoor Unit Installation
4
5. Install the terminal cover by fixing the two screws.
Note:
After finishing the installation of the main body, when choosing where to start, determine the direction of
the pipes to be drawn out. Especially in cases where there is a ceiling involved, align the refrigerant pipes,
drain pipes, and indoor and outdoor lines with their connection points before mounting the unit.
1. After the installation location is selected, drill a hole
with a diameter of 0.2 inches (6 mm) or less into the roof
beam. This is based on the layout of the installation board
(accessory installation cardboard template). After drilling
the hole, remove the installation board.
2. Connect the wire from the control box.
24
Step 2: Install the Indoor Air Handler
Air Conditioner Installation & User Manual
Indoor Unit Installation
4
3. Connect the other side of the connecting cable to the
wired controller.
WARNING
Follow the local regulations and take
measures to isolate high and low voltage.
Note:
Be sure to reserve a length of the connecting
wire for periodic maintenance. If there is a
connection lug at the end of the shielded wire,
properly ground the connection lug.
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Air Conditioner Installation & User Manual
Outdoor Unit Installation
5
Select the Installation Location
1
Note: Prior to Installation
Before installing the outdoor unit, choose an appropriate location. The following are standards intended to help
select an appropriate location for the unit.
Proper installation locations must meet the following standards:
Firm and solid—the
location can support the
unit and will not vibrate.
Protected from prolonged periods of
direct sunlight or rain.
Where snowfall is anticipated, take
appropriate measures to prevent ice
buildup and coil damage.
Good air circulation
and ventilation.
Noise from the unit will
not disturb other
people.
Long-term
Meets all spatial requirements shown in the
installation clearance requirements above.
20 in (500 mm) or more when front
and sides of the unit are clear
20 in (500 mm) or more
when any 2 sides of left,
right, and rear of the
unit are clear.
14 in (350 mm)
or more
4 in (100 mm)
or more
4 in (100 mm)
or more
Note:
Install the unit by following local codes and regulations, which can differ slightly between different
regions.
Strong
wind
Strong
wind
Strong
wind
Wind Baffle
90° angle to the direction of
the wind
Build a wind baffle to
protect the unit
Build a shelter to protect
the unit
CAUTION:
Shelter
Special Considerations for Extreme Weather
If the unit is exposed to heavy wind:
Install the unit so that the air outlet fan is at 90° angle to the direction of the wind. If needed, build a barrier in
front of the unit to protect it from extremely heavy winds. See the figures below:
If the unit is frequently exposed to heavy rain or snow:
Build a shelter above the unit to protect it from rain or snow. Be careful not to obstruct air flow around the unit.
If the unit is frequently exposed to salty air (seaside):
Use an outdoor unit that is specially designed to resist corrosion.
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Air Conditioner Installation & User Manual
Outdoor Unit Installation
5
Do not the install the unit in the following locations:
Near an obstacle that will block
air inlets and outlets.
Near public streets, crowded
areas, or where noise from the
unit will disturb others.
Near animals or plants
that will be harmed by
hot air discharge.
Near any source of
combustible gas.
In a location that is exposed to
large amounts of dust.
In a location exposed to an
excessive amount of salty air.
Install the Drain Joint2
Step 1:
Find the base pan hole of the outdoor unit.
Step 2:
1. Fit the rubber seal on the end of the drain joint that will connect to the outdoor unit.
2. Insert the drain joint into the hole of the unit's base pan. The drain joint will click into place.
3. Connect a drain hose extension (not included) to the drain joint to redirect water from the unit during Heating
mode.
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Air Conditioner Installation & User Manual
Outdoor Unit Installation
5
In Cold Climates
In cold climates, make sure that the drain hose is as vertical as possible to ensure swift water drainage. If
water drains too slowly, it can freeze in the hose and flood into the unit.
Anchor the Outdoor Unit
3
WARNING
When drilling into concrete, eye protection is recommended at all time.
Anchor the outdoor unit to the ground or a wall-mounted bracket with bolts (M10). Prepare the installation base
of the unit according to the dimensions below.
The following is a list of different outdoor unit sizes and the distance between their mounting feet. Prepare the
installation base of the unit according to the dimensions below.
W
H
Top View Front View
D
A
B
Air inlet
Air inlet
Air outlet
Outdoor Unit Dimensions
W x H x D
Mounting Dimensions
Distance A Distance B
30.1 in x 21.8 in x 11.9 in
(765 mm x 555 mm x 303 mm)
31.7 in x 21.8 in x 12.9 in
(
805 mm x 555 mm x 330 mm)
35.0 in x 26.5 in x 13.5 in
(
890 mm x 673
mm x 3
42
mm)
17.8 in
(452 mm)
11.3 in
(286 mm)
20.1 in
(511 mm)
12.5 in
(317 mm)
26.1 in
(663 mm)
13.9 in
(354 mm)
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Air Conditioner Installation & User Manual
Outdoor Unit Installation
5
If installing the unit on a wall-mounted bracket, follow these steps:
CAUTION:
Before installing a wall-mounted unit, make sure that the wall is made of solid brick, concrete, or a similarly
strong material. The wall must be able to support at least four times the weight of the unit.
1. Mark the position of the bracket holes based on the dimensions in the Mounting Dimensions chart on the
previous page.
2. Pre-drill the holes for the expansion bolts.
3. Clean dust and debris away from the holes.
4. Place a washer and nut on the end of each expansion bolt.
5. Thread expansion bolts through the holes in the mounting bracket. Then, put the mounting brackets in
position and hammer the expansion bolts into the wall.
6. Confirm that the mounting brackets are level.
7. If the feet of the outdoor unit have rubber pads already installed and are using a local dealer's wall-mounting
bracket, remove them before attempting to mount the condenser to the bracket. The mounting bracket has
rubber isolating pads on it that will take the place of these.
8. Carefully lift the unit and place its mounting feet on the brackets.
9. Bolt the unit firmly to the brackets.
To Reduce Vibration of the Wall-Mounted Unit
If allowed, install the wall-mounted unit with rubber gaskets to reduce vibration and noise.
Drainpipe Installation
The drainpipe is used to drain away water from the unit. Improper installation may cause unit and property
damage.
• Insulate all piping to prevent condensation, which could lead to water damage.
• If the drainpipe is bent or installed incorrectly, water may leak and cause a water-level switch malfunction.
• In Heat mode, the outdoor unit will discharge water. Ensure that the drain hose is placed in an appropriate
area to avoid water damage and slippage.
• Do not pull the drainpipe forcefully. This could disconnect it.
• Ensure that the drainpipe installation complies with all local and national codes and regulations.
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Air Conditioner Installation & User Manual
Outdoor Unit Installation
5
Note on Purchasing Pipes
Installation requires 3/4 inch PVC pipe, which can be obtained at a local hardware store or dealer.
the drainpipe to the indoor unit via the drain
Indoor Drainpipe Installation
Install the drainpipe as illustrated in the following figure. Connect
adaptor.
Note on Drainpipe Installation
• When using an extended drainpipe, tighten the indoor connection with an additional protection tube to
prevent it from pulling loose.
• Slope the drainpipe downward at a gradient of at least 1/100 to prevent water from flowing back into the air
conditioner.
• To prevent the pipe from sagging, space hanging wires every 39-59 inches (1-1.5 m).
• If the outlet of the drainpipe is higher than the body's pump joint, provide a lift pipe for the exhaust outlet of
the indoor unit. Install the lift pipe no higher than 20.8 inches (528 mm) from the drain port on the cassette.
Ensure that the distance between the unit and lift pipe is less than 11.8 inches (279 mm). Incorrect
installation could cause water to flow back into the unit and flood.
• To prevent air bubbles, keep the drain hose level or slightly tilted up (< 3 in / 75 mm).
31
Air Conditioner Installation & User Manual
Outdoor Unit Installation
5
Pass the drain hose through the wall hole. Make sure the
water drains to a safe location so it will not cause water
damage or a slipping hazard.
Note:
Ensure that the drainpipe outlet is at least 1.9 inches (50
mm) above the ground. If it touches the ground, the unit
may become blocked and malfunction. If discharging the
water directly into a sewer, make sure that the drain has
a U or S pipe to catch odors that might otherwise come
back into the house.
1. Use a 2.5 inch (65 mm) or 3.54 inch (90 mm)
core drill to create a hole in the wall. Make sure
that the hole is drilled at a slight downward
angle, so that the outdoor end of the hole is
lower than the indoor end by about 0.2-0.275
inches (5-7 mm). This will ensure proper water
drainage.
2. Place the protective wall cuff in the hole.
This protects the edges of the hole and will
help seal it when finishing the installation
process.
Drill the Wall Hole
CAUTION:
When drilling the wall hole, make sure to
avoid wires, plumbing, and other sensitive
components.
Note: When the gas side connective pipe is Φ
5/8 inches (16 mm) or more, the wall hole must
be 3.54 inches (90 mm)
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Air Conditioner Installation & User Manual
Refrigerant Piping Connection
6
When connecting the refrigerant piping, do not let substances or gases other than the specified refrigerant from
entering the unit. The presence of other gases or substances will lower the unit's capacity, and can cause
abnormally high pressure in the refrigeration cycle. This can cause an explosion and injury.
Notes on Pipe Length & Elevation
Maximum Length & Drop Height Based on Models
Ensure that the length of the refrigerant pipe, number of bends, and drop height between the indoor and outdoor
units meet the requirements shown in the table:
CAUTION
Oil Traps
If oil flows back into the outdoor unit's
compressor, this might cause liquid compression
or deterioration of oil return. Oil traps in the rising
gas piping can prevent this.
Install an oil trap every 20 feet (6 m) of vertical
suction line riser (<36K). Install an oil trap every
32.8 feet (10 m) of vertical suction line riser
(≥36K).
Model
Length of Piping
Maximum Drop Height
9K/12K
18K
82 ft / 25 m
98.4 ft / 30 m
49.2 ft / 15 m
65.6 ft / 20 m
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Air Conditioner Installation & User Manual
Refrigerant Piping Connection
6
Connection Instructions - Refrigerant Piping
CAUTION
• Install the branching pipe horizontally. An angle of more than 10° may cause malfunctions.
• Do not install the connecting pipe until both the indoor and outdoor units have been installed.
• Insulate both gas and liquid piping to prevent condensation.
34
Step 1: Cut Pipes
When preparing the refrigerant pipes, take extra care
to cut and flare them properly. This will ensure
efficient operation and minimize the need for future
maintenance.
Do Not Deform the Pipe While Cutting
Be careful not to damage, dent, or deform the
pipe while cutting. This will drastically reduce
the heating efficiency.
Step 2: Remove Burrs
Burrs can affect the air-tight seal of the refrigerant
piping connection. They must be completely
removed.
Step 3: Flare Pipe Ends
Proper flaring is essential to achieve an airtight seal.
1. Measure the distance between the indoor and
outdoor units.
2. Use a pipe cutter to cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Use a reamer or deburring tool to remove all the
burrs from the cut section of the pipe.
1. After removing burrs from the cut pipe, seal the
ends with PVC tape to prevent foreign materials from
entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of the pipe. Make
sure they are facing the correct direction, because it
is not possible to change their direction after flaring.
4. Remove the PVC tape from the ends of the pipe
when ready to perform the flaring work.
Air Conditioner Installation & User Manual
Refrigerant Piping Connection
6
35
Step 3: Flare Pipe Ends (Continued)
Step 4: Connect Pipes
Connect the copper pipes to the indoor unit first,
then connect it to the outdoor unit. Connect the low-
pressure pipe, then the high-pressure pipe.
Use both a spanner and torque wrench when
connecting or disconnecting pipes to/from the
unit.
Flare Shape
Tightening
Torque
Pipe
Gauge
Flare Dimension (A)
0.33~0.34 in (8.4~8.7 mm)
0.52~0.53 in (13.2~13.5 mm)
0.64~0.65 in (16.2~16.5 mm)
18-20 N.m
(180-200 kgf.cm)
32-39 N.m
(320-390 kgf.cm)
49-59 N.m
(490-590 kgf.cm)
Ø ¼ in
(6.35 mm)
Ø ⅜ in
(9.52 mm)
Ø ½ in
(12.7 mm)
5. Clamp the flare form on the end of the
pipe. The end of the pipe must extend beyond
the flare form.
6. Place the flaring tool onto the form.
7. Turn the handle of the flaring tool
clockwise until the pipe is fully flared.
8. Remove the flaring tool and flare form,
then inspect the end of the pipe for cracks
and flaring.
1. When connecting the flare nuts, apply a thin coat
of refrigeration oil to the flared ends of the pipes.
2. Align the center of the two pipes intended to be
connected.
3. Tighten the flare nut snugly by hand.
4. Use a wrench to grip the nut on the unit tubing.
5. While firmly gripping the nut, use a torque wrench
to tighten the flare nut according to the torque valves
in the table.
Note
Air Conditioner Installation & User Manual
Refrigerant Piping Connection
6
36
CAUTION
Ensure to wrap the insulation around the piping. Direct contact with the bare piping may result in
burns or frostbite.
• Make sure the pipe is properly connected. Over tightening may damage the bell mouth, while under
tightening may lead to leakage.
Note
Minimum Bend Radius
• Carefully bend the tubing in the middle
according to the diagram.
• Do not bend the tubing more than 90° or
more than three times.
Note
Step 4: Connect Pipes (Continued)
CAUTION
Check to make sure that there is no refrigerant
leakage after completing the installation work.
If there is refrigerant leakage, ventilate the area
immediately and evacuate the system. Refer to
the Air Evacuation section of this manual.
6. After connecting the copper pipes to the indoor
unit, wrap the power cable, signal cable, and piping
together with binding tape.
7. Thread this pipeline through the wall and connect
it to the outdoor unit.
8. Insulate all the piping, including the valves of the
outdoor unit.
9. Fix the water receiver (supplied in the
accessories box) to the indoor unit using a screw.
10. Open the stop valves of the outdoor unit to start
the flow of the refrigerant.
• Do not intertwine the signal cable with other
wires while bundling these items together.
• Do not intertwine or cross the signal cable
with any other wiring.
Air Conditioner Installation & User Manual
Wiring Precautions
7
WARNING
Before performing any electrical work, read these warnings.
• All wiring must comply with local and national electrical codes and regulations. A licensed electrician must
install all the wiring.
• All electrical connections must be made according to the electrical connection diagram located on the panels
of the indoor and outdoor units.
• If there is a serious safety issue with the power supply, stop work immediately. Explain the reasoning to the
client and refuse to install the unit until the safety issue is properly resolved.
• The power voltage must be within 90-110% of the rated voltage. Insufficient power supply can cause
malfunction, electrical shock, or fire.
• Installing an external surge suppressor at the outdoor disconnect is recommended.
• If connecting power to fixed wiring, incorporate a switch or circuit breaker that disconnects all poles and has a
contact separation of at least 1/8 of an inch (3 mm). Qualified technicians must use an approved circuit
breaker or switch.
• Only connect the unit to an individual branch circuit. Do not connect another appliance to that outlet.
• Make sure to properly ground the air conditioner.
• Firmly connect every wire. Loose wiring can cause the terminal to overheat, resulting in product malfunction
and possible fire.
• Do not let wires touch or rest against the refrigerant tubing, compressor, or any moving parts.
• If the unit has an auxiliary electric heater, install it at least 3.3 feet (1 m) away from any combustible materials.
• After turning off the power, always wait 10 minutes or more before touching the electrical components in order
to avoid electrical shock.
• Do not cross the electrical wiring with the signal wiring. This may cause distortion, interference, or possibly
damage to circuit boards.
• Do not connect other equipment to the same power circuit.
• Connect the outdoor wires before connecting the indoor wires.
WARNING
Before performing any electrical or
wiring work, turn off the main power to
the system.
Connection Diagram (9K/12K/18K)
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Air Conditioner Installation & User Manual
Wiring Precautions
7
Note for Service Disconnect
When the maximum current of the air conditioner is more than 16A, use a service disconnect or leakage
protection switch with a protective device (purchased separately). When the maximum current of the air
conditioner is less than 16A, equip the power cord of the air conditioner with a plug (purchased separately). In
North America, wire the appliance according to NEC and CEC requirements.
Note: The cographs are for explanation purposes only. The machine may be slightly different. The actual
shape shall prevail.
Select the service disconnect as required by local, regional, and national codes.
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Air Conditioner Installation & User Manual
Wiring Precautions
7
Outdoor Unit Wiring
WARNING
Before performing any electrical or wiring work, turn off the main power to the system.
1. Prepare the cable for connection:
a) Begin by choosing the correct cable size. Choose the cable type according to the local electrical codes and
regulations.
b) The minimum circuit ampacity of the unit determines the size of the power supply cable, signal cable, fuse, and
switch needed. The minimum circuit ampacity is indicated on the nameplate located on the side panel of the unit.
Refer to the nameplate to choose the correct cable, fuse, or switch.
c) Use wire strippers to strip the rubber jacket from both ends of the signal cable to reveal approximately 5.9
inches (150 mm) of wire.
d) Strip the insulation from the ends of the cable.
e) Use a wire crimper to crimp u-lugs on the ends.
Note: When connecting the wires, strictly follow the wiring diagram inside the electrical box cover.
2. Remove the electric cover of the outdoor unit. If there is no cover on the outdoor unit, take off the bolts from the
maintenance board and remove the protection board.
3. Connect the u-lugs to the terminals. Match the wire colors/labels with the labels on the terminal block. Firmly
screw the u-lug of each wire to its corresponding terminal.
4. Clamp down the cable with the cable clamp.
5. Insulate unused wires with electrical tape. Keep them away from any electrical or metal parts.
6. Reinstall the cover of the electrical control box.
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Air Conditioner Installation & User Manual
Wiring Precautions
7
Indoor Unit Wiring
1. Prepare the cable for connection:
a) Use wire strippers to strip the rubber jacket from both ends of the signal cable to reveal about 5.9 inches (150
mm) of the wire.
b) Strip the insulation from the ends of the wires.
c) Use a wire crimper to crimp the u-lugs to the ends of the wires.
2. Open the front panel of the indoor unit. Use a screwdriver to remove the cover of the electric control box on
the indoor unit.
3. Thread the power and signal cables through the wire outlet.
4. Connect the u-lugs to the terminals. Match the wire colors/labels with the labels on the terminal block. Firmly
screw the u-lug of each wire to its corresponding terminal. Refer to the serial number and wiring diagram
located on the cover of the electric control box.
5. Clamp down the cable with the cable clamp. The cable must not be loose or pull on the u-lugs.
6. Reattach the electric box cover.
CAUTION
• While connecting the wires, strictly follow the wiring
diagram.
• The refrigerant circuit can become very hot. Keep
the interconnection cable away from the copper
tube.
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Air Conditioner Installation & User Manual
Air Evacuation
8
Notice
When opening the valve stems, turn the hexagonal wrench until it hits against the stopper. Do not try to force
the valve to open further.
Preparations & Precautions
Air and foreign matter in the refrigerant circuit can lead to abnormal rises in pressure, which can damage the air
conditioner, reduce its efficiency, and cause injury. Use a vacuum pump and manifold gauge to evacuate the
refrigerant circuit, removing any non-condensable gas and moisture from the system. Perform the evacuation
after the initial installation and when relocating the unit.
Before Performing the Evacuation
Check to make sure the connective pipes
between the indoor and outdoor units are
connected properly.
Check to make sure all wiring is connected
properly.
Evacuation Instructions
1. Connect the charge hose of the manifold gauge to the service port on the outdoor unit's low-pressure valve.
2. Connect another charge hose from the manifold gauge to the vacuum pump.
3. Open the low-pressure side of the manifold gauge. Keep the high-pressure side closed.
4. Turn on the vacuum pump to evacuate the system.
5. Run the vacuum for at least 15 minutes or until the compound meter reads -76cmHG (-10
5
Pa).
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Air Conditioner Installation & User Manual
Air Evacuation
8
42
6. Close the low-side pressure of the manifold gauge, then turn off the vacuum pump.
7. Wait for 5 minutes, then confirm that there has been no change in system pressure.
8. If there is a change in system pressure, refer to the information on how to check for leaks. If there is no change
in system pressure, unscrew the cap from the packed valve (high-pressure valve),
9. Insert a hexagonal wrench into the packed valve (high-pressure valve) and open the valve by turning the
wrench 1/4 counterclockwise. Listen for gas exiting the system, then close the valve after 5 seconds.
10. Watch the pressure gauge for 1 minute to make sure that there is no change in pressure. The pressure gauge
should read slightly higher than the atmospheric pressure.
11. Remove the charge hose from the service port.
12. Use a hexagonal wrench to fully open both the high-pressure and low-pressure valves.
13. Tighten the caps on all three valves by hand (service port, high pressure, and low pressure). Use a torque
wrench to tighten it further.
Air Conditioner Installation & User Manual
CAUTION
Do not mix different types of refrigerant.
Some systems require additional charging depending on the pipe lengths. In North America, the
standard pipe length is 25 feet (7.5 m). Charge the refrigerant from the service port on the outdoor unit's
low-pressure valve. Calculate the additional refrigerant to be charged using the following formula:
Refrigerant
R-454B
ؼ in (Ø6.35 mm) Ø⅜ in (Ø9.52 mm) ؽ in (Ø12.7 mm)
(Pipe length - standard
length) x 0.16oz/ft
(Pipe length - standard
length) x 15g/m
(Pipe length - standard
length) x 0.32oz/ft
(Pipe length - standard
length) x 30g/m
(Pipe length - standard
length) x 0.69oz/ft
(Pipe length - standard
length) x 65g/m
Note on Adding Refrigerant
9
Liquid Side Diameter
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Air Conditioner Installation & User Manual
Electrical & Gas Leak Checks
10
WARNING – RISK OF ELECTRICAL SHOCK
A licensed electrician must install all wiring and comply with local, state, and national electrical codes.
Electrical Safety Checks
After the installation is completed, confirm that all
electrical wiring has been installed in accordance with
local and national regulations, as well as according to
the installation manual.
Before Test Run
Check Grounding Work
Measure grounding resistance using visual detection
and a grounding resistance tester. The grounding
resistance must be less than 0.1 Ω.
Note: This may not be required for some locations in
North America.
During Test Run
Check for Electrical Leakage
During the test run, use an electro probe and
multimeter to perform a comprehensive electrical
leakage test.
If Electrical Leakage is Detected
If electrical leakage is detected, turn off the unit
immediately and call a licensed electrician to find and
resolve the cause of leakage.
Gas Leak Checks
There are two different methods to check for gaseous
leaks. Use Figure 8.1 below as a guide for the critical
points to check for leaks.
Soap and Water Method
Use a soft brush or spray bottle to apply a soapy
water solution to all of the pipe connection points of
the indoor and outdoor units. Watch to see if any
bubbles form. The presence of bubbles indicates
there is a leak.
Leak Detector Method
If using a leak detector, refer to the device's
Operation/Instruction manual for proper usage
instructions.
After Performing Gas Leak Checks
After confirming that all of the refrigerant pipe
connections points do not leak, replace the valve
cover on the outside unit. Then, wrap and
insulate the piping connections of the indoor unit.
Figure 8.1
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Air Conditioner Installation & User Manual
Panel Installation
11
Step 1: Prepare and Install the Ceiling
• Drill a 16.93 inch x 51.18 inch (430 mm x 1,300 mm) hole into the ceiling based on the layout of the
installation board. The center of the ceiling opening should match the center of the indoor unit's body.
Note: In order to keep the ceiling level and prevent vibrations, reinforce the strength of the ceiling when
necessary.
• After the ceiling is cut, remove the installation board, then install the ceiling.
Step 2: Panel Installation
Model A
Note:
The air grille received by the customer is not tightened by the wire rope, but is specifically designed to
be loose for easy installation.
• Grab the air grille with your fingers and pull it out slowly in the direction of the arrow.
• Pull the panel grille out of the panel, then fix the cassette panel to the one-way cassette with two plastic
buckles.
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Air Conditioner Installation & User Manual
Panel Installation
11
• Manually rotate the air deflector, then fix the panel to the cassette by using three M4*22 screws and a
ST3.9*16 screw.
Note:
Eight M4*22 are supplied, two of which are spare.
Two ST3.9*16 screws are supplied, one of which is a
spare
• Open the two covers on both sides of the panel. After, fix the panel to the cassette by using three M4*22
screws.
• Connect the display board to the main control board. Four wires are required for connection.
Note:
The corresponding colors or pins are connected to each other.
46
Before fixing this screw, open the screw cover. After
fixing the screw, close the cover.
Air Conditioner Installation & User Manual
Panel Installation
11
• Install the control box cover and turn on the circuit breaker. Then, close the two plastic covers on both sides
of the panel.
• During the test-run process, the display will light up and the air grille will rise automatically.
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Air Conditioner Installation & User Manual
Panel Installation
11
Model B
• Press the circular position to open the two screw covers, then remove the two screws.
• Hold and open the air grille, then push both of the latches to the middle to unlock the air grille.
• Pull the panel grille out of the panel. After, fix the cassette panel to the one-way cassette using two plastic
buckles.
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Air Conditioner Installation & User Manual
Panel Installation
11
• Open the two covers on both sides of the panel. Then, fix the panel to the cassette using three M4*22
screws.
• Connect the display board to the main control board. Up to four wires are required for the connection.
Note:
The corresponding colors or pins are connected to each other.
49
• Manually rotate the air deflector, then fix the panel to the cassette by using three M4*22 screws and a
ST3.9*16 screw.
Note:
Eight M4*22 are supplied, two of which are spare.
Two ST3.9*16 screws are supplied, one of which is a
spare
Before fixing this screw, open the screw cover. After
fixing the screw, close the cover.
Air Conditioner Installation & User Manual
Panel Installation
11
• Install the control box cover and turn on the circuit breaker. Then, close the two plastic covers on both sides
of the panel.
• Reinstall the air grille by pushing the latch to lock it and fixing the two screws. Then, close the two screw
covers.
Step 3: Optional Parts Installation
Wireless Module
The wireless module is also named Smart Kit. If this configuration is selected, follow these steps for proper
installation.
Note: It is recommended to install this wireless module during the panel installation.
• Remove the protective cap of the wireless module (smart kit).
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Air Conditioner Installation & User Manual
Panel Installation
11
• Open the cover of the display panel, then loosen the screw and remove the cover.
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Air Conditioner Installation & User Manual
Test Run
12
CAUTION
Failure to perform the test run may result in unit damage, property damage, or personal injury.
Before Test Run
Perform the test run after the entire system has been completely installed. Confirm the following points
before performing the test:
a) The indoor and outdoor units are properly installed.
b) The piping and wiring are properly connected.
c) There are no obstacles near the inlet and outlet of the unit that might cause poor performance or product
malfunction.
d) The refrigeration system does not leak.
e) The drainage system is unimpeded and draining to a safe location.
f) The heating insulation is properly installed.
g) The grounding wires are properly connected.
h) The length of the piping and additional refrigerant capacity have been recorded.
i) The power voltage is the correct voltage for the air conditioner.
Test Run Instructions
1. Open both the liquid and gas stop valves.
2. Turn on the main power switch and allow the unit to warm up.
3. Set the air conditioner to Cool mode.
4. For the indoor unit:
a) Ensure that the remote control and its buttons operate properly.
b) Ensure that the louvers move properly and can be changed using the remote control.
c) Double check to see if the room temperature is being registered correctly.
d) Ensure that the indicators on the remote control and display panel for the indoor unit operate properly.
e) Ensure that the manual buttons on the indoor unit operate properly.
f) Confirm that the drainage system is unimpeded and draining smoothly.
g) Ensure that there is no vibration or abnormal noise during operation.
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Air Conditioner Installation & User Manual
Test Run
12
Note: If the unit malfunctions or does not operate according to your expectations, refer to the Troubleshooting
section before calling customer service.
• Before the test, make sure that the water discharge pipeline is smooth. In addition, check that each
connection is sealed properly.
• Conduct the water discharge test in the new room before the ceiling is paved.
Water Discharge Test
1. Connect the power supply and set the air conditioner to operate in Cool mode. Check the running sound of
the drainage pipe.
2. Allow Cool mode to run for at least 10 minutes.
3. Stop the air conditioner. Wait for three minutes and then check if there is anything unusual. If the water
discharge piping layout is incorrect, the excessive water flow will cause the water level error and the "EE" error
code will appear on the display panel. There may even be water overflowing from the water pan.
4. Continue to add water until the alarm for the excessive water levels is triggered. Check if the drainage pump
drains the water immediately. After three minutes, if the water level does not fall below the warning line, the unit
will shut down. At this time, turn off the power supply and drain away the accumulated water before turning on
the unit normally.
5. Turn off the power supply, remove the water manually using the drainage pipe, and put the test cap back to
the original place.
CAUTION
The drainage plug at the bottom of the unit body is used to discharge the accumulated water from the drain
pan when the air conditioner malfunctions. When the air conditioner is operating normally, make sure the
drainage plug is properly set up to prevent water from leaking.
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Air Conditioner Installation & User Manual
Instructions for unpacking and packing the unit:
Unpacking:
Indoor Unit:
1. Cut the sealing tape on the carton with a knife (one cut on the left, one cut in the middle, and one cut on the
right).
2. Use the vice to take out the sealing nails on the top of the carton.
3. Open the carton.
4. Take out the middle support plate if it is included.
5. Remove the accessory package, and take out the connecting wire if it is included.
6. Lift the machine out of the carton and lay it flat.
7. Remove the left and right packaging foam or the upper and lower packaging foam. Untie the packaging bag.
Outdoor Unit:
1. Cut the packing belt.
2. Take the unit out of the carton.
3. Remove the foam from the unit.
4. Remove the packing bag from the unit.
Packing:
Indoor Unit:
1. Put the indoor unit into the packing bag.
2. Attach the left and right packaging foam or the upper and lower packaging foam to the unit.
3. Put the indoor unit into the carton, then put the accessory package inside.
4. Close the carton and seal it.
5. Use the packing belt if necessary.
Outdoor Unit:
1. Put the outdoor unit into the packing film.
2. Put the bottom foam into the box.
3. Put the outdoor unit into the carton, then put the upper packaging foam on the unit.
4. Close the carton and seal it with the tape.
5. Use the packing belt if necessary.
Note: Keep all the packaging items in case they're needed in the future.
Unpacking & Packing
13
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Air Conditioner Installation & User Manual
14
Operation Instructions
Note
To further optimize the unit's performance, do the following:
• Keep doors and windows closed.
• Limit energy usage by using the Timer On and Timer Off functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.
Indoor Unit Display
There is one type of display panel. The display panel's appearance is shown below:
" " When the Timer is set.
" " When the unit is on.
" " Alarm indicator.
" " When the Wireless Control feature is activated.
" " When the preheating/defrost feature is activated.
" " Displays temperature, operation feature, and error codes.
" " When the 4°F/8°C heating feature is turned on.
" " When the Active Clean feature is turned on.
" " When the wireless module enters AP mode.
" " When the Forced Cooling feature is turned on.
Note
Features
Each time the air conditioner is powered on, a buzzing sound will be heard to indicate that the product has
been powered on normally. If there is no sound, it is possible that the unit is operating abnormally. Power
on the unit again or check the circuit.
The actual functions are subject to the product that was purchased. Check the indoor display and remote
control of the air conditioner. See the Remote Controller manual for information on more features.
• Default Setting
When the air conditioner restarts after a power failure,
it will default to the factory settings
(Auto mode, Auto fan, 76°F (24°C). A power failure
may cause inconsistencies on the remote control and
panel. Use the remote control to update the status.
• Auto-Restart
If a power failure occurs, the system will immediately
stop. When power returns, the operation light on the
indoor unit will flash. Press the On/Off button on the
remote control to restart the unit. If the system has an
auto-restart function, the unit will restart using the
same settings.
• 3-Minute Protection Feature
A protection feature prevents the air conditioner from
activating for approximately 3 minutes when it
restarts immediately after operation.
• Louver Angle Memory Function
Note: Only available for units with the louver angle
memory function.
When the unit restarts after a power failure, the angle
of the horizontal louvers will automatically return to
the previous position. The angle of the horizontal
louver must not be set too small, as condensation
may form and drip into the machine. To reset the
louver, press the manual button, which will reset the
horizontal louver settings.
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Air Conditioner Installation & User Manual
14
Operation Instructions
Set
t emperature
Keep
running
Sleep Operation
Cool mode (+2°F/1°C) per hour
for the first 2 hours.
Heat mode (-2°F/1°C) per hour
for the first 2 hours.
1h1h
Saving energy during sleep
o EHC1 - Refrigerant sensor detects
leakage.
o EHC2 - Working condition of the
refrigerant sensor is out of range and
leakage is detected.
o EHC3 - Working condition of the
refrigerant sensor is out of range.
o ECC1 - Other indoor unit refrigerant
sensor detects leakage (multi-zone
systems).
When "EHC1" or "EHC2" errors occur, the
buzzer will continue to beep for 5-6 minutes
before stopping. Pressing any button on the
remote control will also stop the buzzer.
Note: "EHC1", "EHC2", "EHC3", and
"ECC1" error codes are only applicable for
units with refrigerant sensors.
• Sleep Operation
The Sleep function decreases energy use during
sleeping hours. The function doesn't need the
same temperature settings to stay comfortable.
Use the remote control to activate this function.
The Sleep function is not available in Fan or Dry
mode.
Press the Sleep button to activate this function.
When in Cool mode, the unit will increase the
temperature by 2°F (1°C) after 1 hour, then
increase by an additional 2°F (1°C) after another
hour. When in Heat mode, the unit will decrease
the temperature by 2°F (1°C) after 1 hour, then
decrease by an additional 2°F (1°C) after another
hour.
The Sleep feature will stop after 8 hours and the
system will keep running with the final situation.
• Active Clean Function (Multi-zone
system models do not have this
function)
The Active Clean technology washes away
dust when it adheres to the heat exchanger by
automatically freezing and then rapidly thawing
the frost. A "pi-pi" sound will be heard. The
Active Clean operation is used to produce
more condensed water to improve the cleaning
effect. Cold air will blow out. After cleaning, the
internal wind wheel will continue operating with
hot air to blow-dry the evaporator, thus keeping
the inside clean.
• Heat Exchanger Dust Removal
Function
This feature helps keep the outdoor coil cleaner
and may extend the duration between regular
maintenance intervals depending on the local
conditions. When the unit is turned off, a 10-
second delay occurs when the outdoor fan runs
in reverse rotation for 70 seconds to blow off
loose accumulated dust and debris.
• Refrigerant Leakage Detection
When the system detects a refrigerant
malfunction, the indoor unit will automatically
display the following error codes:
o EL0C - System lacks refrigerant.
• Lifting Panel Operation
In Standy-By mode, press the "Mode" and
"Down" buttons simultaneously for 3 seconds
to have the remote control enter the setting
panel state and display the "F2" code. When
setting the panel status, press the "Up" and
"Down" buttons on the remote control to
control the rise or fall of the grille. Press any
other button to exit the setting. The up and
down height of the panel can reach a
maximum of 4.9 feet (1.5 m). During the
decline, if the grill is raised by the obstacles, it
will stop. During the ascending process, if the
grille is blocked and does not rise to the
correct height or a finger is pinched, it will
automatically descend after a period of time
and then ascend. If the grille is blocked three
times, the display panel will report an error and
prompt the manual processing.
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14
Operation Instructions
Energy Saving Tips
• Do not set the unit to excessive temperature
levels.
• While cooling, close the curtains to avoid direct
sunlight.
• Close doors and windows to keep cool or warm
air in the room.
• Do not place objects near the air inlet and outlet
of the unit.
• Clean the air filter every two weeks.
• Properly adjust louvers and avoid direct airflow.
• Closing curtains during Heating mode also keeps
the heat in.
Breeze Away
This feature prevents direct air flow from blowing on
the body, making the user feel as though they are
indulging in silky coolness.
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Air Conditioner Installation & User Manual
15
Care & Maintenance
Before Cleaning or Maintenance
Remember to disconnect the power before cleaning or performing maintenance, except for cleaning the air filter.
Turning off the indoor unit's circuit breaker is not a kind of power disconnection.
• Contact an authorized service technician for repairs or maintenance. Improper repairs or maintenance may
cause water leakage, electrical shock, or fire. It may also void your warranty.
• Do not substitute a blown fuse with a higher or lower amperage rating fuse, as this may cause circuit damage
or an electrical fire.
• Make sure the drain hose is set up according to the instructions. Failure to do so could cause leakage and
result in personal property damage, fire, and electrical shock.
• Make sure that all wires are connected properly. Failure to connect the wires according to the instructions
can result in electrical shock or fire.
CAUTION
• Only use a soft, dry cloth to wipe the unit clean. If the unit is especially dirty, use a cloth soaked in warm
water to wipe it clean.
• Do not use chemicals or chemically treated cloths to clean the unit.
• Do not use benzene, paint thinner, polishing powder, or other solvents to clean the unit. They can cause the
plastic surface to crack or deform.
• Do not use water hotter than 104°F (40°C) to clean the front panel. This can cause the panel to deform or
become discolored.
• Do not wash the unit under running water. Doing so creates an electrical hazard. Use a damp, lint-free cloth
and neutral detergent to clean the unit. Dry the unit with a dry, lint-free cloth.
Removing and cleaning the filter can be dangerous. A certified technician must perform the removal and
maintenance.
Clean the Indoor Unit (Air Filter)
The filter prevents dust and other particles from entering the indoor unit. Dust buildup can reduce the efficiency
of the air conditioner. For optimum efficiency, clean the air filter every two weeks or more frequently if the unit is
in a dusty area. Replace the filter with a new one if it's heavily clogged and cannot be cleaned.
Note: In households with animals, periodically wipe down the grille to prevent animal hair from blocking the
airflow.
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WARNING: DO NOT REMOVE OR CLEAN THE FILTER BY YOURSELF
Air Conditioner Installation & User Manual
15
Care & Maintenance
Model A
1. In Stand-By mode, press the "Mode" and "Down" buttons simultaneously on the remote control for 3 seconds.
The remote control enters the panel-setting state and displays the "F2" code.
2. Press the "Down" button on the remote control, allowing the air grille to automatically go down. When it stops,
pick up the air filter.
a. Hold the upper edge of the filter with both hands. Gently turn and lift until the upper edge is free from the wire
rope.
b. Lift the filter and move it forward slightly until the filter is separated from the four wire ropes.
c. Move the filter to the right until it is separated from the air grille, then the filter can be taken out.
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15
Care & Maintenance
Model B
1. Press the circular position to open the screw covers, then remove the two screws.
2. Hold and open the air grille, then take out the air filter.
3. Clean the air filter.
Dust will accumulate on the filter during operation. Remove the dust from the filter, so the unit functions
effectively. Clean the filter every two weeks when the unit is frequently used. Clean the air filter with a vacuum
cleaner or water.
a. Ensure that the air intake side is facing up when using a vacuum cleaner.
b. Ensure that the air intake side is facing down when using clean water.
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Air Conditioner Installation & User Manual
CAUTION
• Before changing or cleaning the filter, turn off the
unit and disconnect its power supply.
• When removing the filter, do not touch metal parts
in the unit. The sharp metal edges can cut you.
• Do not use water to clean the inside of the indoor
unit. This can destroy insulation and cause
electrical shock.
• Do not expose to direct sunlight when drying. This
can shrink the filter.
• An authorized dealer or licensed service provider
must perform any maintenance and clean the
outdoor unit.
• An authorized dealer or licensed service provider
must perform any unit repairs.
• Install the air filter before installing the unit body.
Maintain the AC
Maintenance -
Long Periods of Non-Use
Maintenance -
Pre-Season Inspection
After long periods of non-use or before periods of frequent
use, do the following:
Clean all filters
Turn on the Fan function until the
unit dries out completely
Turn off the unit and
disconnect the power
Remove the batteries from the
remote control
Check for damaged wires
Clean all filters
Check for leaks
Make sure nothing is blocking the air inlets
and outlets
Replace the
batteries
15
Care & Maintenance
If the air conditioner won't be used for an
extended period of time.
4. Reinstall the air filter.
5. Press the "Up" button on the remote control to reset the air grille. (Applicable to Model A)
Reinstall the air grille by fixing the two screws. Then, close the two screw covers. (Applicable to Model B)
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Air Conditioner Installation & User Manual
Unit does not turn on when
pressing the On/Off button
Unit changes from
Cooling/Heating mode
to Fan mode
Indoor unit emits white
mist
Indoor and outdoor units
emit white mist
Indoor unit makes noises
Indoor and outdoor units
make noises
The unit has a 3-minute protection feature that prevents the unit from overloading. The
unit cannot be restarted within 3 minutes of being turned off.
Cooling and Heating mode: If the operation light and PRE-DEF (pre-heating/defrost)
indicators are lit up, the outdoor temperature is too cold, activating the unit's anti-cold
wind feature in order to defrost the unit.
In Cooling-only mode: If the Fan-Only indicator is lit up, the outdoor temperature is
too cold, activating the unit's anti-freeze protection in order to defrost the unit.
The unit may change its settings to prevent frost from forming on the unit. Once
the temperature increases, the unit will start operating in the previously selected
mode again.
The set temperature has been reached, at which point the unit turns off the
compressor. The unit will continue operating when the temperature fluctuates again.
In humid regions, a large temperature difference between the room's air and the
conditioned air can cause white mist.
When the unit restarts in Heating mode after defrosting, white mist may be emitted
due to moisture generated from the defrosting process.
A rushing air sound may occur when the louver resets its position.
A squeaking sound is heard when the system is off or in Cooling mode. The noise is
also heard when the drain pump (optional) is in operation.
A squeaking sound may occur after running the unit in Heating mode,
due to expansion and contraction of the unit's plastic parts.
Low hissing sound during operation: This is normal and caused by refrigerant
gas flowing through both the indoor and outdoor units.
Low hissing sound when the system starts, stops running, or defrosting: This noise is
normal and caused by the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts
caused by temperature changes during operation can cause squeaking noises.
Issue
Possible Causes
The following issues are not malfunctions and will not require repairs in most situations:
Common Issues
CAUTION
If any of the following conditions occur, turn off the unit immediately:
• The power cord is damaged or abnormally warm.
• A burning odor is present.
• The unit is emitting loud or abnormal sounds.
• A power fuse blows or the circuit breaker frequently trips.
• Water or other objects fall into or out of the unit.
Do not attempt to fix these problems by yourself. Contact an authorized service provider immediately.
T
Troubleshooting
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Air Conditioner Installation & User Manual
Problem
Possible Causes
Solution
Poor Cooling
Performance
Temperature setting may be higher
than ambient room temperature.
Heat exchanger on the indoor or
outdoor unit is dirty.
Air filter is dirty.
Air inlet or outlet of either unit is
blocked.
Doors and windows are open.
Excessive heat is generated by sunlight.
Too many sources of heat in the room
(people, computers, electronics, etc.).
Low refrigerant due to leak or long-
term use.
Lower the temperature setting.
Clean the affected heat exchanger.
Remove the filter and clean it according
to the instructions in this manual.
Turn the unit off, remove the obstruction, and
turn it back on.
Make sure that all doors and windows are
closed while operating the unit.
Close windows and curtains during periods
of high heat or bright sunshine.
Reduce the amount of heat sources.
Check for leaks. Reseal if necessary and top
off the refrigerant.
When trouble occurs, check the following points before contacting a repair company:
Note: If the problem persists, contact a local dealer or the nearest customer service center. Provide them with
a detailed description of the unit malfunction and model number.
Outdoor unit
makes noises
Dust is emitting from
either the indoor or
outdoor unit
Unit emitting bad odor
Fan of the outdoor
unit does not operate
The outdoor unit will make different sounds based on its current operating mode.
The unit may accumulate dust during extended periods of non-use, which will be emitted
when the unit is turned on. This can be mitigated by covering the unit during long periods
of inactivity.
The unit may absorb odors from the environment, which will be emitted during
operations. Examples are furniture, cooking, cigarettes, etc.
The unit's filters have become moldy and need to be cleaned.
During operation, the fan speed is controlled to optimize product operation.
Issue
Possible Causes
T
Troubleshooting
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Air Conditioner Installation & User Manual
Poor heating
performance
Unit starts and stops
frequently
Unit is not working
Outdoor temperature is
extremely low.
Cold air is entering through
doors and windows.
Low refrigerant due to leak
or long-term use.
Use an auxiliary heating device.
Make sure that all doors and windows are
closed during use.
Check for leaks. Reseal if necessary and top
off refrigerant.
There's too much or little
refrigerant in the system.
Incompressible gas or moisture
has entered the system.
System circuit is blocked.
Compressor is broken.
Voltage is too high or low.
Check for leaks and recharge the system
with refrigerant.
Evacuate and recharge the system with refrigerant.
Determine which circuit is blocked and replace
the malfunctioning piece of equipment.
Replace the compressor.
Install a manostat to regulate the voltage.
Power failure.
Power is turned off.
Fuse is burned out.
Remote control batteries
are dead.
The unit's 3-minute protection
has been activated.
The unit's timer is activated.
Wait for the power to be restored.
Turn on the power.
Replace the fuse.
Replace the batteries.
Wait 3 minutes after restarting the unit.
Turn the timer off.
Problem
Possible Causes
Solution
T
Troubleshooting
The unit may stop operation or continue to run safely. If the indicator lamps continue
to flash or error codes appear, wait about 10 minutes. The problem may resolve
itself.
If not, disconnect the power. Then, connect the power again and turn the unit on.
Indicator lamps
continue to flash
Error codes appear and
begin with the letters as
the following in the
window display of the
indoor unit:
• E (x), P (x), F (x)
• EH (xx), EL (xx),
EC (xx)
• PH (xx), PL (xx),
PC (xx)
Note: If the problem continues after performing the checks and diagnostics
above, turn off the unit immediately and contact an authorized service center.
The design and specifications are subject to change without prior notice for product
improvements. Consult with the sales agency or manufacturer for details. Any
updates to the manual will be uploaded to the service website, check for the latest
version.
64
The design and specifications of this product are subject to change without prior notice
as development continues. Consult with the sales agency or manufacturer for details.
Refer to the equipment nameplate for all other applicable specifications.
Copyright © Parker Davis HVAC International, LLC. All rights reserved.
is a registered trademark of Parker Davis HVAC International, LLC.
Parker Davis HVAC International
7290 NW 77 Court, Miami, FL 33166 - USA
Tel
: (305) 513-4488
Fax
: (305) 513-4499
E-mail
Website: www.pdhvac.com
Pioneer product line, parts, and supplies are
available online for convenient ordering at:
www.highseer.com
www.pioneerminisplit.com
Scan the below code to visit our support page
where you can find more installation materials:
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