User Manual
ELECTROLUX VANGUARD SERIES SPLIT AIR CONDITIONER
Models: SAC09SNV23-1 | SAC12SNV23-1 | SAC18SHV22-1 | SAC24SHV22-1
Customer Support
Email: electroluxacsupport@theinnospace.com
Phone: +1 (888) 2022194
Safety Notice (R32)
R32 is a flammable A2L refrigerant. The air conditioner is charged with R32.
Compared with common refrigerants, R32 does not harm the ozone layer and uses
a smaller charge amount to reach high efficiency. However, it is flammable and may
form an explosive mixture with air under certain conditions. Always follow the R32
safety and installation instructions in this manual.
Before using the air conditioner, read this User Manual carefully.
Before installing the air conditioner, read the Installation and Servicing instructions
carefully.
Before repairing the air conditioner, refer to the technical service manual and follow
all R32 servicing requirements.
CONTENTS
Safety Precautions
02
Outdoor Unit Installation
38
Refrigerant Sensor (Optional)
16
Disposal Guideline
47
Remote Control
08
Maintenance
43
Installation Precautions (R32)
24
Name Of Parts
06
Test Operation
42
R32 Servicing Requirements
17
Operation Instructions
15
Troubleshooting
45
Indoor Unit Installation
32
* The design and specifications are subject to change without prior notice for product
improvement. Consult with the sales agency or manufacturer for details.
* The shape and position of buttons and indicators may vary according to the model,
but their function are the same.
01
SAFETY PRECAUTIONS
SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLER
02
ELECTROLUX SPLIT AIR CONDITIONER
Models: SAC09SNV23-1 | SAC12SNV23-1 | SAC18SHV22-1 | SAC24SHV22-1
1. Read this guide before installing and using the air conditioner.
2. During installation of the indoor and outdoor units, access to the working area
should be forbidden to children. Unforeseeable accidents could happen.
3. Make sure that the base of the outdoor unit is firmly fixed.
4. Check that air cannot enter the refrigerant system and check for refrigerant leaks
when moving the air conditioner.
5. Carry out a test cycle after installing the air conditioner and record the operating
data.
6. Protect the indoor unit with a fuse of suitable capacity for the maximum input
current or with another overload protection device.
7. Ensure that the mains voltage corresponds to that stamped on the rating plate.
Keep the switch or power plug clean. Insert the power plug correctly and firmly
into the socket, thereby avoiding the risk of electric shock or fire due to
insufficient contact.
8. Check that the socket is suitable for the plug; otherwise, have the socket
changed.
9. The air conditioner must be fitted with means for disconnection from the supply
mains having contact separation in all poles that provide full disconnection
under overvoltage category III conditions, and these means must be
incorporated in the fixed wiring in accordance with the wiring rules.
10. The air conditioner must be installed by professional or qualified persons.
11. Do not install the air conditioner at a distance of less than 50 cm from flammable
substances (alcohol, etc.) or from pressurized containers (e.g., spray cans).
12. If the air conditioner is used in areas without the possibility of ventilation, pre
cautions must be taken to prevent any leaks of refrigerant gas from remaining in
the environment and creating a danger of fire.
13. The packaging materials are recyclable and should be disposed of in separate
waste bins. Take the air conditioner at the end of its useful life to a special waste
collection center for disposal.
14. Only use the air conditioner as instructed in this booklet. These instructions are
not intended to cover every possible condition and situation. As with any
electrical household appliance, common sense and caution are therefore always
recommended for installation, operation, and maintenance.
15. The air conditioner must be installed in accordance with applicable national
regulations.
16. Before accessing the terminals, all the power circuits must be disconnected from
the power supply.
SAFETY PRECAUTIONS
SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLER
03
17. The air conditioner shall be installed in accordance with national wiring
regulations.
18. This air conditioner can be used by children aged from 8 years and above and
persons with reduced physical, sensory, or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the air conditioner in a safe way and understand the hazards
involved. Children shall not play with the air conditioner. Cleaning and user
maintenance shall not be made by children without supervision.
19. Do not try to install the air conditioner alone; always contact specialized
technical personnel.
20. Cleaning and maintenance must be carried out by specialized technical
personnel. In any case, disconnect the air conditioner from the mains electricity
supply before carrying out any cleaning or maintenance.
21. Ensure that the mains voltage corresponds to that stamped on the rating plate.
Keep the switch or power plug clean. Insert the power plug correctly and firmly
into the socket, thereby avoiding the risk of electric shock or fire due to
insufficient contact.
22. Do not pull out the plug to switch off the air conditioner when it is in operation,
since this could create a spark and cause a fire, etc.
23. This air conditioner has been made for air conditioning domestic environments
and must not be used for any other purpose, such as for drying clothes, cooling
food, etc.
24. Always use the air conditioner with the air filter mounted. The use of the air
conditioner without air filter could cause an excessive accumulation of dust or
waste on the inner parts of the device with possible subsequent failures.
25. The user is responsible for having the air conditioner installed by a qualified
technician, who must check that earthing/grounding is done in accordance with
current legislation and insert a thermomagnetic circuit breaker.
26. The batteries in the remote controller must be recycled or disposed of properly.
For disposal of scrap batteries, please discard the batteries as sorted municipal
waste at the accessible collection point.
27. Never remain directly exposed to the flow of cold air for a long time. The direct
and prolonged exposure to cold air could be dangerous for your health.
Particular care should be taken in the rooms where there are children, old, or sick
people.
28. If the air conditioner gives off smoke or there is a smell of burning, immediately
cut off the power supply and contact the Service Center.
29. The prolonged use of the device in such conditions could cause fire or
electrocution.
30. Have repairs carried out only by an authorized Service Center of the manufac-
turer. Incorrect repair could expose the user to the risk of electric shock, etc.
31. Unhook the automatic switch if you foresee not using the device for a long time.
The airflow direction must be properly adjusted.
32. The flaps must be directed downwards in the heating mode and upwards in the
cooling mode.
33. Ensure that the air conditioner is disconnected from the power supply when it
will remain inoperative for a long period and before carrying out any cleaning or
maintenance.
34. Selecting the most suitable temperature can prevent damage to the air
conditioner.
SAFETY PRECAUTIONS
SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLER
04
SAFETY PRECAUTIONS
SAFETY RULES AND PROHIBITIONS
FLAMMABLE REFRIGERANT WARNING
05
1. Do not bend, pull, or compress the power cord as this may cause damage
leading to fire or electric shock. Only authorized personnel should replace
damaged power cords.
2. Avoid the use of extension cords or multi-outlet power boards.
3. Do not operate the appliance with wet hands or barefoot.
4. Ensure air inlets and outlets are unobstructed to prevent damage or reduced
performance.
5. Do not modify or alter the appliance configuration.
6. Avoid installation in environments with gases, oils, sulfur compounds, or near
heat sources.
7. The appliance is not intended for use by unsupervised children or persons with
reduced physical or mental capabilities.
8. Do not place heavy or hot objects on the appliance, particularly the outdoor
unit.
9. Keep doors and windows closed during operation to ensure efficient
performance.
10. Do not direct airflow towards plants or animals.
11. Prolonged direct airflow exposure may harm plants, animals, and occupants.
12. Avoid contact with water to prevent electric shock.
13. Do not climb onto or place objects on outdoor units.
14. Never insert fingers, sticks, or other objects into air inlets or outlets.
15. Supervise children to ensure safety and prevent play involving the appliance.
Replace damaged cords only with qualified service.
• This air conditioner uses R32 refrigerant, which is mildly flammable (A2L).
• Install, operate, and store the unit only in rooms that meet the minimum floor
area and ventilation requirements specified in this manual.
• Keep the unit away from open flames, welding, smoking, hot surfaces, and
other ignition sources.
• If you suspect a refrigerant leak, close the outdoor unit service valves if it is
safe to do so, ventilate the area, and leave the room for at least 15 minutes
before going back in.
Do not use open flames or tools that may spark to check for leaks. Use only
approved electronic leak detectors or suitable leak detection fluids.
Only qualified personnel with valid refrigerant handling certification may
install, service, charge, or recover R32 refrigerant, and must follow national
gas regulations and the manufacturer’s instructions.
Do not pierce, weld, or burn any part of the refrigerant circuit. Do not weld
or braze damaged units on site; return damaged units to an authorized ser
vice facility.
NAME OF PARTS
06
Indoor Unit
Outdoor Unit
Air Outlet
Air deflector and flap
Mounting plate
Air filter
Air inlet
Front panel
Emergency button
Refrigerant
connecting pipe
Air inlet
Wiring cover
Drainage pipe
Valve
protective cover
Gas valve
(Low pressure valve)
Liquid valve
(High pressure valve)
Air Outlet
With protective cover removed
This figure shown may
be different from the
actual object. Please
take the actual unit
as the standard.
NOTE
NAME OF PARTS
07
Indoor Display
Indicator for Timer, temperature, and Error codes
Note: The shape and position of switches and indicators may vary according to
the model, but their functions are the same.
Lights up during Timer operation
SLEEP mode
REMOTE CONTROL
08
Note: The display and some functions of the remote control may vary according
to the model.
Low battery warning
Mute function
Auto Mode
TURBO function
Cooling Mode
Horizontal swing
Dry Mode
Vertical swing
Fan only Mode
SLEEP function
Heating Mode
I FEEL function
ECO Mode
8°C heating function
Timer
IR transmission
Display control
Set temperature
Child lock active
Self-Clean function
AUTO, LOW, LOW-MID, MID, MID-HIGH, HIGH
REMOTE CONTROL
09
Note: The unit confirms correct reception of each button with a beep. Button shapes may
vary by model.
Turn air conditioner on/off
Increase temperature or Timer hours
Decrease temperature or Timer hours
Select mode: AUTO, COOL, DRY, FAN, HEAT
Activate/deactivate ECO function.
Long press activates 8°C heating (select models)
Activate/deactivate TURBO function
Select fan speed: AUTO, MUTE, LOW, LOW-MID, MID, MID-HIGH, HIGH, TURBO
Set timer on/off
Activate/deactivate SLEEP function
Switch indoor LED display on/off
Horizontal flaps swing up/down or set direction
Vertical deflectors swing left/right or set direction
Activate/deactivate I FEEL function
Activate/deactivate MUTE function.
Long press activates GEN function (select models)
Activate/deactivate CHILD-LOCK function
Activate/deactivate SELF-CLEAN function (select models)
Save/recall favorite settings
Accessory button (model specific)
REMOTE CONTROL
10
Battery Replacement
Remove the battery cover plate from the rear of the remote control by
sliding it in the direction of the arrow.
For some models: When inserting batteries for the first time, you can set Cooling
only or Heat pump control type:
Temperature display (°C/°F): For some remote controllers:
Install the batteries according to the direction and polarity shown on the
remote control.
Reinstall the battery cover by sliding it into place.
Remote Control Notes:
3. To reset, remove and reinstall batteries.
Replace old batteries with new ones of the same type
when the display is no longer legible.
Insert batteries and turn off remote controller.
1. Long press MODE button until snowflake icon flashes to set Cooling only type.
1. Direct the remote control toward the air conditioner.
3. Never leave remote control exposed to direct sunlight..
2. Ensure no objects block the path between remote and indoor unit signal receptor.
4. Keep remote control at least 1 meter from televisions or other electrical appliances.
1. Press and hold TURBO button for 5 seconds to enter change mode type.
2. Press and hold TURBO until it switches between °C and °F
3. Release and wait 5 seconds for selection to save.
2. Long press MODE button until sun icon flashes to set Heat pump type.
Do not dispose of batteries as unsorted municipal waste.
Collect such waste separately for special treatment.
Use 2 pieces LR03 AAA (1.5V) batteries.
Do not use rechargeable batteries.
REMOTE CONTROL
11
The cooling function allows the air
conditioner to cool the room and
reduce air humidity simultaneously.
The heating function allows the air
conditioner to heat the room.
Fan mode provides air ventilation
only.
AUTO → MUTE → LOW → LOW-MID → MID →
MID-HIGH → HIGH → TURBO
Heating Operation Characteristics
(Heat Pump Models)
This function reduces humidity
to make room more comfortable.
Press FAN button to cycle
through:
Unit automatically selects operating mode
according to room temperature.
1. Long press MODE and TIMER buttons
together to activate.
2. Repeat to deactivate.
Under Child-Lock, no single button functions.
To activate: Press MODE button until COOL
symbol appears on display.
To activate: Press MODE button until HEAT
symbol appears on display.
Preheating: Indoor unit takes 2-5 minutes to
preheat, then blows warm air.
North American Market: Press ECO button
10 times within 8 seconds (in HEAT mode) for
forced defrosting - clears outdoor ice faster.
To Set: Press MODE button until FAN
symbol appears on display.
To Set: Press MODE until DRY appears.
Automatic dehumidification starts.
To Set: Press MODE until AUTO
appears.
Set temperature lower than room temperature
using ▲/▼ buttons.
Set temperature lower than room temperature
using ▲/▼ buttons.
Defrosting: When outdoor unit is frosted,
automatic defrost activates (2-10 minutes).
Indoor fan stops during defrost. Resumes HEAT
mode automatically after defrost.
REMOTE CONTROL
12
When unit is switched off:
When unit is switched on:
Automatically switch on appliance
Automatically switch off appliance
1. Press TIMER button first time. “6.0” appears
on remote display and flashes.
Press TURBO button to activate. Turbo icon
appears on display. Press again to cancel.
In COOL or HEAT mode, TURBO activates
maximum cooling/heating with highest fan
speed for strong airflow.
1. Press SWING button to activate louvers:
2. Vertical deflectors positioned manually
under flaps allow airflow direction left or right.
• Never position flaps manually; the
delicate mechanism might be seriously
damaged!
• Never put fingers, sticks, or other objects
into air inlet or outlet vents. Contact with
live parts may cause injury.
3. For some inverter heating models, press
both horizontal and vertical SWING buttons
simultaneously to activate Self-Clean function
(unit must be OFF).
1.1 Press SWING to activate horizontal flaps
swinging up/down. Icon appears on remote
display. Press again to stop at current angle.
1.2 Press SWING to activate vertical
deflectors swinging left/right. Icon appears
on remote display. Press again to stop at
current angle.
2. Press ▲ or ▼ buttons to set desired Timer-on
time. Time increases/decreases by half hour
between 0-10 hours and by one hour between
10-24 hours.
3. Press TIMER button second time to confirm.
4. Set required mode (COOL, HEAT, AUTO,
FAN, DRY) using MODE button.
6. Set operation temperature using ▲/▼
buttons.
5. Set fan speed using FAN button.
7. Cancel by pressing TIMER button
1. Confirm appliance is ON.
2. Press TIMER button first time to set switch-off.
4. Press TIMER button second time to confirm.
5. Cancel by pressing TIMER button.
3. Press ▲/▼ buttons to set desired timer time.
Note: All programming must be completed
within 5 seconds, otherwise the setting will
be cancelled.
WARNING
REMOTE CONTROL
13
1. Press MUTE button to activate (icon
appears).
2. Indoor unit operates at lowest fan speed for
quiet operation (remote shows AUTO fan).
3. Pressing FAN or TURBO cancels MUTE.
Note: Cannot activate in DRY mode.
Pre-set automatic operating program for
sleeping.
Press I FEEL to activate (icon appears).
ECO mode automatically adjusts operation
for energy savings.
Press ECO button (ECO icon appears).
Press again to cancel.
Press DISPLAY to switch indoor LED display
ON/OFF.
Available in COOLING and HEATING modes.
Press SLEEP button (icon appears).
Press again to cancel.
Remote control measures temperature at its
location and signals air conditioner for
optimized comfort.
After 10 hours in sleep mode, returns to
previously set mode.
Auto deactivates after 8 hours (2 hours for
some modes).
REMOTE CONTROL
14
Optional for some heat pump inverter models Save Favorite Setting:
Recall Favorite Setting:
Recommended ambient conditions:
(Favorite Settings)
1. Turn indoor unit OFF first. 1. In desired mode (COOLING, HEATING,
FAN, DRY), long press MEMORY button over
3 seconds.
1. In any mode (COOLING, HEATING,
FAN, DRY), press MEMORY button once.
1. Long press ECO button over 3 seconds to
activate. “8°C (46°F)” appears on remote
display.
2. Repeat to deactivate.
3. Automatically starts heating when room
temperature drops below 8°C (46°F).
4. Returns to standby when temperature
reaches 9°C (48°F).
5. Automatically cancels if room temperature
exceeds 18°C (64°F).
2. “AU” flashes on remote display, confirming
favorite setting saved.
2. Unit runs with saved favorite settings.
“AU” flashes.
3. Press any button to exit. Reset by
repeating steps 1-2.
3. Press MEMORY again or other buttons
to cancel.
2. Press CLEAN button. You will hear a beep,
“AC” appears on indoor LED and remote
display.
3. Function cleans evaporator by carrying away
accumulated dirt and bacteria.
4. Runs approximately 30 minutes, then returns
to previous mode.
5. Cancel during process by pressing ON/OFF
button. Two beeps confirm completion or
cancellation.
6. Normal noise may occur as plastic materials
expand/contract with temperature changes.
• Indoor unit: ≤86°F (30°C)
• Outdoor unit: ≥41°F (5°C)
Note: Use every 3 months.
OPERATION INSTRUCTIONS
15
MODE
Current Status Operation Response Enter Mode
Heating
Standby
Standby
(Heat Pump only)
Heating
Press once
Press twice in 3 sec
Press once
Brief beep
Two brief beeps
Continuous beeping
Cooling
Heating
OFF
Cooling
Dry
Room Temperature
32°F-80°F (0°C-27°C)
63°F-90°F (17°C-32°C)
63°F-90°F (17°C-32°C)
Outdoor Temperature
-13°F-86°F (-25°C-30°C)
T1: 5°F-122°F (-15°C-50°C)
T3: 5°F-131°F (-15°C-55°C)
-
Operating Temperature Limits
Attempt to use the air conditioner outside the specified temperature range may
cause the protection device to activate, preventing operation.
Use within following conditions:
Low temperature heating: -13°F-86°F (-25°C-30°C)
Preheating: When heating function starts, indoor unit takes 2-5 minutes to preheat
before blowing warm air.
Defrosting: During heating, when outdoor unit becomes frosted, automatic defrost
activates to improve heating effect:
North American Market: For forced defrosting, press ECO button 10 times
within 8 seconds (in HEATING mode).
EMERGENCY BUTTON OPERATION (Remote Failure)
HEATING OPERATION CHARACTERISTICS (Heat Pump Models)
Display Codes:
Note: With power connected, compressor delays 3 minutes after restart or mode change.
Open front panel and locate emergency button on electronic control box. Always use
insulated material to press.
Hd = Communication error
Duration: 2-10 minutes Indoor and outdoor fans stop during defrost
Resumes HEATING mode automatically after defrost completes
REFRIGERANT SENSOR (OPTIONAL)
16
Important Notes
Position of Refrigerant Sensor:
1. The refrigerant sensor must be maintained by a professional. Only use
manufacturer-specified sensors for replacement.
6. This unit is equipped with refrigerant leak detector for safety. Unit must remain
electrically powered at all times after installation (except during servicing) for
detector to function.
2. Design life of refrigerant sensor is 15 years. Replace within service life range.
5. Installation position shown in figure (appearance varies by cabinet model).
7. Replace refrigerant sensor only with manufacturer-approved sensor.
8. LEAK DETECTION SYSTEM INSTALLED. Unit must remain powered except
during service.
4. Alarm signals:
3. Sensor automatically detects refrigerant concentration during operation. When
concentration reaches alarm level, it activates circulating airflow and stops
compressor.
Error Code Display Meaning
-
-
Fd
Hd
Refrigerant leak protection
Communication error with
refrigerant sensor
R32 SERVICING REQUIREMENTS
17
1. Check this manual to confirm the required space and minimum clearances for proper
installation, including distances to nearby structures.
1. General Servicing Requirements
2. Install, operate, and store the unit only in rooms with a floor area larger than 4 m².
3. Keep the length of refrigerant piping as short as possible.
4. Protect piping from physical damage. Do not install piping in an unventilated space
smaller than 4 m².
5. Follow all applicable national gas regulations.
17. Do not pierce or burn any part of the appliance.
18. Be aware that refrigerants may have little or no odor.
8. Keep all ventilation openings clear and free of obstructions.
9. Servicing must only be performed as recommended by the manufacturer.
10. Store the appliance in a well ventilated room whose size meets the requirements
specified for operation.
11. Do not store the appliance in rooms with continuously operating open flames
(for example gas appliances) or other ignition sources (for example electric heaters).
12. Store the appliance so it cannot be damaged by impact, vibration, or other
mechanical forces.
14. Any work that affects safety (for example opening the refrigerant circuit, sealed
components, or ventilated enclosures) must be carried out only by competent persons.
15. Do not use any method to speed up defrosting or to remove frost other than the
methods described by the manufacturer.
16. Store the appliance only in rooms without continuously operating ignition sources such
as open flames, gas appliances, or electric heaters.
13. Anyone working on the refrigerant circuit must hold a valid, current certificate from
an accredited authority that confirms their competence in handling refrigerants and
flammable refrigerants.
6. Make sure all mechanical connections are accessible for inspection and maintenance.
7. Follow this manual for handling, installing, cleaning, maintaining, recovering, and
disposing of R32 refrigerant..
R32 is classified as a class A2L mildly flammable refrigerant under UL/CSA 60335240.
– Mc: Actual refrigerant charge in the system.
– A: Actual floor area of the room where the appliance is installed.
– Amin: Required minimum room area.
– Mmax: Allowable maximum refrigerant charge in a room.
– Qmin: Minimum air circulation airflow.
– Anvmin: Minimum natural ventilation opening area for connected rooms.
The following definitions apply:
The total refrigerant charge in the system must be less than or equal to the
allowable maximum charge, which depends on the floor area of the room or rooms
served by the system.
(Details of formulas, Tables GG.1 and GG.2, and connectedroom rules are handled
in the INSTALLATION PRECAUTIONS (R32) section per your separate brief; the
above is the high-level statement.)
R32 SERVICING REQUIREMENTS
18
2. Important Considerations (R32)
4. Room Area And Connected Rooms (Summary For Servicing)
3. Refrigerant Charge And Room Area Limitations (Overview)
1. The air conditioner must be installed by professional personnel. The Installation
Manual is intended only for qualified installation personnel, and installation must
follow the manufacturer’s after-sales service regulations.
1. When calculating refrigerant quantity limits, consider any space that contains
refrigerant-carrying parts or where refrigerant could be released.
2. Use the smallest enclosed occupied space as the room area A for determining
refrigerant quantity limits.
3. Define room area A as the floor area enclosed by the projection of walls, partitions,
and doors for the space where the unit is installed.
4. Spaces connected only by drop ceilings, ductwork, or similar paths are not treated
as one space.
5. Units mounted higher than 7055/64 inches, and spaces separated by partitions no
higher than 6263/64 inches, may be treated as a single space.
2. When charging the system with flammable refrigerant, rough or careless handling
can cause serious injury to people or damage to property.
4. Before servicing or repairing an air conditioner that uses flammable refrigerant,
perform a safety inspection to reduce fire risk as much as possible.
5. Operate and service the unit under a controlled procedure to keep any risk from
flammable gas or vapor as low as possible during operation.
6. Requirements for total refrigerant charge and minimum room area are given in
Tables GG.1 and GG.2 in this manual.
3. Perform a refrigerant leak test after installation is completed.
6. Rooms on the same floor connected by a permanent, full-height passageway
intended for people to walk through may be treated as a single room when checking
Amin.
(Details of lowlevel and high-level openings, and Anvmin calculations, remain in the
installation section; servicing staff are reminded here that connected room rules apply.)
R32 SERVICING REQUIREMENTS
19
5. Information On Servicing (R32)
Before working on systems containing R32, perform safety checks to minimize the risk
of ignition.
Use a controlled work procedure so that any flammable gas or vapor is minimized
while work is in progress.
Check the area with an appropriate refrigerant detector before and during work so
the technician is aware of any flammable atmosphere.
If any hot work (for example brazing) is to be done on the refrigeration equipment or
associated parts, keep appropriate fire extinguishing equipment close at hand.
Do not use any source of ignition in a way that could cause fire or explosion while
pipework is exposed.
Keep all possible ignition sources, including smoking materials, far from the installa-
tion, repair, removal, and disposal area when refrigerant may be released.
Survey the area before starting work to make sure there are no flammable hazards or
ignition risks.
A dry powder or CO₂ extinguisher must be available near the charging area.
Use leakdetection equipment that is suitable for flammable refrigerants, nonsparking,
properly sealed, or intrinsically safe.
Inform all maintenance staff and other people in the area about the work being done.
Avoid work in confined spaces.
Section off the area around the work site.
Remove or control flammable materials to make the area safe.
Display “No Smoking” signs.
Check the work area, ventilation, and possible leak paths.
Avoid working in confined spaces.
5.1 Area Checks
5.2 Work Procedure
5.4 Checking For Presence Of Refrigerant
5.5 Fire Extinguishers
5.6 Ignition Sources
5.3 General Work Area
R32 SERVICING REQUIREMENTS
20
5.7 Ventilation
5.8 Checks On Refrigeration Equipment
5.9 Checks On Electrical Devices
6.1 Sealed Components
6.2 Intrinsically Safe Components
6.3 Cabling
Work in the open air or in a well-ventilated area before opening the system or doing
work that will produce heat.
When changing electrical parts, use components that are suitable for the application
and meet the correct specification.
Include initial safety checks and component inspections when servicing electrical
parts.
Replace sealed electrical components rather than trying to repair them.
Replace intrinsically safe components with manufacturer-approved parts only.
Take into account aging and continuous vibration from compressors or fans.
Route cables so they are not exposed to wear, corrosion, excessive pressure,
vibration, sharp edges, or other harmful conditions.
If a fault could compromise safety, do not reconnect power until the fault is corrected.
If continued operation is absolutely necessary, use a temporary but safe solution and
inform the owner.
Initial checks must confirm that:
Always follow the manufacturer’s maintenance and service instructions. If in doubt,
contact the manufacturer’s technical department.
Ventilation should safely disperse any released refrigerant and discharge it to the
outside atmosphere.
Keep ventilation running while work is being carried out.
For installations with flammable refrigerant, check that:
– The refrigerant charge is suitable for the room size.
– Ventilation fans and outlets work properly and are not blocked.
– If an indirect system is used, the secondary circuit is checked for refrigerant.
– All markings and labels are visible and legible; repair or replace any that are not.
– Refrigerant piping and components are located where they will not be exposed
to corrosive substances, unless they are made of or protected by corrosionresistant
materials.
– Capacitors are discharged safely to avoid sparking.
– No live electrical parts or wiring are exposed during charging, recovery, or purging.
– Earth/ground bonding is continuous.
6. Repairs, Removal, And Recovery
R32 SERVICING REQUIREMENTS
21
6.4 Detection Of Flammable Refrigerants
6.6 Removal And Evacuation
6.7 Decommissioning
6.5 Leak Detection Methods
Never use open flames or halide torches to search for or detect refrigerant leaks.
Recover refrigerant into the correct recovery cylinders.
Do not use compressed air or oxygen for flushing.
Flush the system with OFN to make it safe. This may need to be repeated several times.
After the final OFN charge, vent the system to atmospheric pressure before working on it.
When opening the refrigerant circuit for repairs or other reasons, follow these basic steps:
Before decommissioning, make sure the technician is familiar with the equipment.
Recover all refrigerant safely.
Take oil and refrigerant samples if analysis is needed before reusing reclaimed refrigerant.
Ensure electrical power is available before starting the procedure.
Steps:
If you suspect a leak, remove or extinguish all open flames.
Purge the system with oxygenfree nitrogen (OFN) before and during brazing.
Use electronic leak detectors suitable for flammable refrigerants. Calibrate them in a
refrigerantfree area and set them to a maximum of 25% of the LFL.
Leak detection fluids may be used, but detergents that contain chlorine must be
avoided because they may react with the refrigerant and corrode copper piping.
If brazing is required near a leak, recover all refrigerant from the system or isolate it
with shutoff valves in a remote part of the system.
To flush, break the vacuum with OFN to working pressure, vent to atmosphere, then
evacuate again. Repeat until no refrigerant remains.
Make sure the vacuum pump outlet is located away from ignition sources and in a
ventilated area.
1. Remove all refrigerant.
1. Become familiar with the equipment and its operation.
2. Isolate the system electrically.
3. Before starting, make sure:
3. Evacuate the system.
2. Purge the circuit with inert gas.
4. Purge again with inert gas.
5. Open the circuit by cutting or brazing.
– Mechanical handling equipment is available if needed for cylinders.
– All personal protective equipment is available and used correctly.
– The recovery process is supervised at all times by a competent person.
– Recovery equipment and cylinders meet applicable standards.
R32 SERVICING REQUIREMENTS
22
4. Pump down the system if possible.
5. If a vacuum cannot be achieved, use a manifold to remove refrigerant from
different parts of the system.
7. Start the recovery machine and operate it according to the manufacturer’s
instructions.
6. Place the cylinder on the scales before recovery.
8. Do not overfill cylinders (maximum 80% of liquid volume).
9. Do not exceed the cylinder’s maximum working pressure, even temporarily.
10. When cylinders are filled correctly and recovery is complete, remove cylinders
and equipment from the site and close all isolation valves.
11. Do not charge recovered refrigerant into another system unless it has been
cleaned and checked.
6.8 Labeling
6.9 Recovery
Label equipment that has been decommissioned and emptied of refrigerant.
Ensure enough cylinders are available to hold the total system charge.
Evacuate empty recovery cylinders and, if possible, cool them before use.
Use calibrated scales and hoses with leak-free couplings.
Do not mix different refrigerants in recovery equipment or in cylinders.
Use only electric heating on compressor bodies if heating is needed to speed evacuation.
Drain oil safely.
When removing refrigerant for service or decommissioning, always remove refrig-
erant safely.
Labels must show that refrigerant has been removed and must include the date
and signature.
Ensure that labels indicating “equipment contains flammable refrigerant” are
present where applicable.
Use only suitable recovery cylinders designed and tested for the refrigerant and
charge in use.
Cylinders must be designated and labeled for recovered refrigerant and must
include a pressure-relief valve and shutoff valves in good condition.
Use recovery equipment that is in good working order, properly maintained,
and suitable for flammable refrigerants.
Check that the recovery machine is installed correctly and that electrical
components are sealed to prevent ignition in case of a leak.
Return recovered refrigerant to the supplier in proper recovery cylinders and
complete any required waste transfer documentation.
Before returning compressors or oils, evacuate them to a safe level so that
flammable refrigerant does not remain trapped in the lubricant.
R32 SERVICING REQUIREMENTS
23
6.10 Final Warnings And Statements (R32)
Do not use any methods to accelerate defrosting or cleaning other than those
recommended by the manufacturer.
Store the appliance only in rooms without continuously operating ignition sources
such as open flames, gas appliances, or electric heaters.
When systems are field-charged, account for the effect of pipe length on total
refrigerant charge.
After field piping is complete for split systems, pressuretest pipework with inert
gas and then vacuumtest before charging with refrigerant.
The unit is shipped with a flammable refrigerant charge. When joining charged
parts of the system during installation:
Protect pipework from physical damage. Do not install flammable refrigerant
piping in unventilated spaces smaller than the minimum area Amin, except where
A2L piping complies with UL 60335240 clause requirements.
Provide protection from physical damage for all pipework (materials, routing,
and installation), and comply with national and local codes such as ASHRAE 15,
ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical
Code, or CSA B52. Ensure all field joints are accessible for inspection before
covering or enclosing them.
Ensure that maintenance, service, and repair work affecting safety is carried out
only by competent persons (for example breaking into the refrigerant circuit,
opening sealed components, or opening ventilated enclosures).
Do not pierce or burn the appliance.
Remember that refrigerant may have little or no odor.
Do not use open flames or smoke in the area.
Always comply with national gas regulations.
Store the appliance so that it cannot be damaged mechanically.
Before unloading and opening containers, check for leaks with a flammable gas detector.
– Complete brazed, welded, or mechanical joints before opening valves to allow
refrigerant flow between system parts.
– Provide a vacuum valve to evacuate interconnecting piping and any uncharged
system parts.
– Mechanical connectors used indoors must meet ISO 14903. Renew sealing parts
when reusing mechanical connectors indoors. Refabricate flares when reusing
flared joints indoors.
– Protect refrigerant tubing against damage or enclose it.
– Protect flexible connectors that may move during normal operation against
mechanical damage.
INSTALLATION PRECAUTIONS (R32)
24
Important: Installation must be performed only by licensed HVAC professionals.
This manual is for qualified installation personnel only. Follow all local codes and
after-sale service regulations.
1. The air conditioner must be installed by professional personnel. The Installation
Manual is for professional installers only, and installation must follow the
manufacturer’s aftersales service regulations.
3. Perform a refrigerant leak test after installation is completed.
4. Before servicing or repairing an air conditioner using flammable refrigerant,
carry out a safety inspection to reduce fire risk to a minimum.
5. Operate and service the unit under a controlled procedure to keep any risk
from flammable gas or vapor as low as possible.
6. Requirements for total refrigerant charge and minimum room area are shown in
Tables GG.1 and GG.2 in this section.
2. WARNING: When charging the system with flammable R32 refrigerant, rough or
careless handling can cause serious injury or damage to people and property.
Refrigerant Charge And Room Area Limits (R32)
Definitions:
Minimum floor area for charge M (kg):
NOTE: Key Terms
For appliances where the refrigerant charge M satisfies m₁ < M = m₂ :
Maximum charge in a room:
m = (6 m³) × LFL, m = (52 m³) × LFL, m = (260 m³) × LFL
For R32 (A2L) refrigerant, the total refrigerant charge in the system must not be
higher than the maximum allowable charge for the room or rooms being served.
These limits follow UL/CSA 60335240 requirements for A2L refrigerants.
Amin = [M / (2.5 × (LFL)^(5/4) × h₀)]² and must not be less than Amin = M / (SF × LFL × h₀)
Mmax = 2.5 × (LFL)^(5/4) × h₀ × (A)^(1/2) and must not exceed Mmax = SF × LFL × h₀ × A)
M
a
: Actual system refrigerant charge
M
max
: Maximum allowable refrigerant charge per room
A: Actual room area where appliance is installed
Q
min
: Minimum circulation airflow
A
min
: Required minimum room area
A
nvmin
: Minimum opening area for connected rooms
LFL (lower flammable limit) for R32 = 0.306 kg/m³.
INSTALLATION PRECAUTIONS (R32)
25
Room Area Calculation Requirements
Connected Room Requirements
Room area determination guidelines:
CAUTION: Consider any space containing refrigerant parts or where refrigerant
could leak.
Units mounted higher than 70-55/64 inches and spaces divided by partition walls
no higher than 62-63/64 inches shall be considered a single space.
Rooms on the same floor connected by an open passageway may be considered
a single room when determining compliance with A<sub>min</sub>, provided the
passageway meets all of the following:
The total area of connected rooms on the same floor—linked by permanent open-
ings in walls and/or doors between occupied spaces (including gaps between
wall and floor)—may be considered a single room for A<sub>min</sub>
compliance, provided all conditions in Fig. 2-1 are met.
Room area (A): = Smallest enclosed, occupied space used for refrigerant quantity limits
could leak.
Floor area enclosed by wall, partition, and door projections
Opening area ≥ A<sub>nvmin</sub> (Table 2-1)
Opening area ≥ 50% of A<sub>nvmin</sub> (Table 2-1)
Openings above 11-13/16 inches from floor not counted toward A<sub>nvmin</sub>
Permanent opening that cannot be closed
≥ 50% of A<sub>nvmin</sub> below 7-7/8 inches from floor
Opening ≥ 59 inches above floor
Bottom of opening ≤ 3-15/16 inches from floor
Opening height ≥ 25/32 inches
Permanent opening that cannot be closed
For floor-extending openings: height ≥ 25/32 inches above floor covering surface
Spaces connected only by drop ceilings, ductwork, or similar are not considered
one space
1. Permanent opening
2. Extends to the floor
3. Intended for people to walk through
1) Low-Level Opening Requirements
2) High-Level Opening Requirements
INSTALLATION PRECAUTIONS (R32)
26
NOTE: Second opening requirement may be met by drop ceilings, ventilation
ducts, or similar airflow paths between connected rooms.
A<sub>nvmin</sub> (minimum natural ventilation opening) for connected rooms
depends on:
Refer to Table 2-1 for determination.
Fig. 2-1 Opening Conditions for Connected Rooms
Room area (A)
Actual refrigerant charge (M<sub>c</sub>)
Maximum allowable refrigerant charge (M<sub>max</sub>)
INSTALLATION PRECAUTIONS (R32)
27
Minimum Opening Area for Connected Rooms
Indoor Unit Minimum Airflow (Refrigerant Leak Detection)
Table GG.1 - Maximum Refrigerant Charge (kg)
Table 2.1 - Minimum Ventilation Opening (A<sub>nvmin</sub>)
A (m²)
4
9K 110 m³/h
12K 230 m³/h
18K 380 m³/h
24K 450 m³/h
1.73 1.48 0.0058
7 1.73 2.59 0.0000
10 1.73 3.70 0.0000
15 1.73 5.55 0.0000
20 1.73 7.40 0.0000
30
4
1.53
1.71
1.84
2.5
2.8
3.0
7
2.68
3.00
3.21
10
3.83
4.28
4.59
15
5.51
6.17
6.61
20
6.36
7.12
7.63
30
7.79
8.73
9.35
50
10.06
11.27
12.07
1.73 11.10 0.0000
M<sub>c</sub> (kg)
Model
Category
R32
Floor area (m
2
)
LFL (kg/m
3
)
0.306
h
0
(m)
M<sub>max</sub> (kg)
Minimum Airflow
A<sub>nvmin</sub> (m²)
NOTE: Example using M<sub>c</sub> = 1.73 kg
INSTALLATION PRECAUTIONS (R32)
28
Table GG.2 - Minimum Room Area (m²) for R32 Charge
Indoor unit must be installed ≥ 8.2 ft (2.5 m) above floor.
Verify your model specifications. Indoor/outdoor units are designed as matched
pairs. Use the table above to confirm minimum room area for operation/storage.
0.58kg
1.52
1.35
1.26
2.5
2.8
3.0
0.60kg
1.57
1.40
1.31
1kg
2.61
2.33
2.18
1.07kg
2.80
2.50
2.33
1.20kg
3.14
2.80
2.61
1.58kg
4.13
3.69
3.44
2kg
5.23
4.67
4.36
Category
R32
Charge amount (M) (kg)
Minimum room area (m
2
)
LFL (kg/m
3
)
0.306
h
0
(m)
R32 Charge Specifications by Model
SAC09SHV23-1
SAC09SNV23-1
600
550
675
625
SAC12SNV23-1 770 845
SAC18SHV22-1 870 995
SAC24SHV22-1 1270 1395
Model R32 Standard (g) R32 Maximum (g)
INSTALLATION PRECAUTIONS (R32)
29
1. Site Safety Principles
2. Operation Safety Principles
Open Flames Prohibited
Open Flames Prohibited
Mind Static
Electricity
Must wear
protective clothing
Do not use
mobile phone
Must wear
anti-static gloves
Must wear
anti-static gloves
Ventilation Necessary
Site And Installation Safety (R32)
The installation site must be well-ventilated.
Do not install or service an R32 unit in areas with open flames, welding, smoking,
drying ovens, or any other heat source above 548 °C (1018 °F) that can easily
ignite gases.
During installation, wear antistatic clothing and/or antistatic gloves as needed to
prevent static electricity sparks.
Avoid installing units directly above electrical products, power switches, sockets,
kitchen cabinets, beds, sofas, or other valuables.
Choose locations where indoor and outdoor air inlets and outlets are not
blocked by obstacles and are not close to heat sources, combustible materials,
or explosive atmospheres.
If the indoor unit leaks refrigerant during installation, immediately close the out-
door unit valve, evacuate all people, and wait at least 15 minutes until the leaked
refrigerant has dispersed. If the product is damaged, send it back to the service
center. Do not weld refrigerant pipes or carry out other repairs at the user’s site.
INSTALLATION PRECAUTIONS (R32)
30
Installation Safety
Please note the following critical safety requirements:
Suggested Tools
The left diagram shows refrigerant
leak detector schematic.
Refrigerant Leak Detector
Immediately close outdoor unit valves
Appropriate Installation Location
Evacuate all personnel for 15 minutes until refrigerant dissipates
Damaged units MUST return to service center - No welding or repairs on-site
1. Well-ventilated installation sites required.
3. Anti-static measures mandatory: Wear anti-static clothing and/or gloves
during installation.
4. Select locations where indoor/outdoor unit air inlets/outlets are unobstructed
and not near heat sources, combustibles, or explosive environments.
5. EMERGENCY PROCEDURE - If indoor unit leaks refrigerant during installation:
6. Choose locations ensuring even indoor airflow distribution.
7. Avoid installing above electrical products, power switches/plugs/sockets,
kitchen cabinets, beds, sofas, or other valuables.
2. Sites for installing/maintaining R32 air conditioners must be free from open flames,
welding, smoking, drying ovens, or any heat source > 548°F that could produce ignition.
INSTALLATION PRECAUTIONS (R32)
31
Pipe Length and Additional Refrigerant
Torque Parameters
Dedicated Distribution Device and Wire of Air Conditioner
NOTE: This table is only for reference, the installation shall meet the requirements
of the local laws and regulations.
Example 1: REFRIGERANT
CHARGE of the precharged
part of the appliance
Example 2: REFRIGERANT
CHARGE added during
installation
R32
4m/13.12ft4m/13.12ft4m/13.12ft4m/13.12ft
20m/67ft20m/67ft
15m/50ft15m/50ft
INDOOR UNIT INSTALLATION
32
1.1 Ensure installation complies with minimum dimensions, connecting pipe
length, and elevation change limits specified in System Requirements section.
1.2 Air inlet/outlet clear of obstructions for proper room airflow.
1.3 Condensate drain easily accessible and safely routed.
1.6 Mounting wall supports 4× unit weight + vibration.
1.7 Filter access unobstructed for cleaning.
1.8 Adequate space for routine maintenance access.
1.10 Avoid laundry rooms or swimming pool areas due to corrosive
environment..
1.11 ETL Certification Requirement: Lowest moving parts ≥ 8 ft (2.4m) above
floor/grade level.
1.9 Install ≥10 ft (3m) from TV/radio antennas. May require amplifier if
reception is weak.
1.4 All connections easily made to outdoor unit.
1.5 Indoor unit out of children’s reach.
Step 1: Select Installation Location
Minimum Indoor Clearances
Key Clearances:
Front: 75 cm (30”) minimum
Sides: 25 cm (10”) minimum each side
Top (Ceiling): 79 cm (31”) minimum
Bottom: Mounting bracket per specifications
INDOOR UNIT INSTALLATION
33
2.1 Remove mounting plate from indoor unit accessory package.
3.1 Position hole based on mounting plate location.
2.3 Verify plate is level using spirit level, then mark screw hole positions.
3.3 Use 70 mm core drill with small oblique angle (indoor end 5-10 mm higher).
2.4 Remove plate and drill holes at marked positions.
3.4 Install wall sleeve and cover (optional) to protect connections.
2.5 Insert expansion anchors, hang mounting plate, and secure with screws.
2.2 Position plate per Step 1 minimum dimensions. Level plate and mark screw
locations on wall.
3.2 Drill Ø70 mm (2-3/4”) hole with 5-10 mm slope toward outdoor (lower indoor end).
Step 2: Install Mounting Plate
Step 3: Drill Wall Hole
NOTE: Ensure plate is **firm and flat** against wall.
Wall hole required for refrigerant piping, drainage, and connecting cables.
(II) Actual plate may differ from illustration.
CAUTION: Avoid electrical wires, plumbing, and sensitive components when drilling.**
INDOOR UNIT INSTALLATION
34
Step 4: Connect Refrigerant Piping
4.1 Select piping mode based on wall hole position. Three optional indoor piping
modes shown below:
4.2 Bend connecting pipes with port facing up (hook shape).
4.3 Remove plastic covers from pipe ports and protective caps from piping ends.
4.4 Inspect pipe ports for debris. Ensure completely clean.
4.5 Align centers, then hand-tighten flare nuts finger-tight.
4.7 Wrap all joints with insulation tape.
4.6 Torque tighten per Installation Precautions torque table values.
Piping Modes 1 or 3: Cut plastic sheet at piping outlet and cable outlet using scissors.
Note: Trim cut edges smooth to prevent damage.
Note: Trim When flared joints are reused indoors, the flare part shall be re-fabricated.
CAUTION: Improper flaring causes refrigerant leaks. Follow exact torque specs.
INDOOR UNIT INSTALLATION
35
Step 5: Connect Drainage Hose
Step 6: Connect Wiring
5.1 Select drain port (some models have ports on both sides). Attach drainage hose
to chosen port. Plug unused port with supplied rubber plug.
6.1 Select cable size per nameplate maximum operating current
(see INSTALLATION PRECAUTIONS).
5.2 Connect hose securely to drainage port.
6.2 Open indoor unit front panel.
6.4 Loosen cable clamp.
6.7 Tighten cable clamp to secure wires.
6.8 Reinstall control box cover and front panel.
6.5 Route cable through right end knockout into control box.
6.6 Connect wires to terminals per wiring diagram on control box cover.
6.3 Remove electric control box cover using screwdriver to access terminal block.
5.3 Wrap joint with Teflon tape for leak-proof seal.
Note: Route hose obliquely downward with no twists/kinks to prevent blockage.
INDOOR UNIT INSTALLATION
36
9K/12K/18K (Wiring Diagram)
24K (Wiring Diagram)
INDOOR UNIT INSTALLATION
37
After installing refrigerant pipes, wires, and drain hose, bundle with insulation
tape to save space and protect components before passing through wall hole.
7.1 Arrange piping, cables, and drain hose as shown:
7.2 Wrap refrigerant pipes + wires + drain hose tightly with insulation tape.
Step 7: Wrap Piping and Cable
Notes:
For pre-embedded piping or wall connections:
Drain hose at bottom
No crossing/bending of components
Step 8: Mount Indoor Unit
8.1 Pass wrapped bundle (pipes + wires + drain hose) slowly through wall hole.
(I) Remove bottom plate by pulling outward on both ends.
(II) Hook top of unit onto mounting plate (no piping yet).
(III) Lift unit away from wall, unfold mounting plate bracket to prop unit
(creates workspace).
(IV) Complete piping/wiring/drain per Steps 4-7.
(V) Refold mounting plate bracket.
(VI) Snap bottom onto mounting plate hooks.
(VII) Reinstall bottom plate.
8.2 Hook top of indoor unit onto mounting plate.
8.3 Apply slight pressure to left/right sides until securely hooked.
8.4 Push bottom of unit down onto mounting plate hooks until snaps lock.
OUTDOOR UNIT INSTALLATION
38
1.1 Avoid heat sources, steam, or flammable gas.
1.2 Avoid high wind/dust areas.
1.3 Away from high-traffic areas. Sound must not disturb neighbors.
1.4 Away Protect from direct sunlight (use shield if needed - must allow airflow).
1.5 Minimum clearances for air circulation (see diagram).
1.6 Stable, solid mounting surface.
1.7 Vibration isolation: Place rubber blankets
under feet if needed.
Select site meeting all requirements below:
Step 1: Select Installation Location
Step 2: Install Drainage Hose (Heat Pump/RCAC Models Only)
Step 3: Fix Outdoor Unit
2.1 Insert drainage joint into bottom hole of outdoor unit.
3.1 Mark expansion bolt positions per outdoor unit dimensions.
2.2 Connect drainage hose securely to joint.
3.2 Drill holes, clean concrete dust, install bolts.
3.3 Optional: Install 4 rubber blankets in holes to reduce vibration/noise.
3.4 Position unit base over bolts/pre-drilled holes.
3.2 Tighten securely with wrench.
Wall Mounting Option:
Use wall-mounting bracket (supports ≥ 4× unit weight)
Fasten bracket to wall, then secure unit level
CAUTION: Improper mounting causes vibration, noise, or unit failure.
OUTDOOR UNIT INSTALLATION
39
Step 4: Install Wiring
Wiring Diagrams
9K-12K (115V):
4.1 Use Phillips screwdriver to unscrew wiring cover. Grasp and gently press down
to remove.
4.2 Unscrew and remove cable clamp.
4.4 Reinstall cable clamp and wiring cover.
4.3 Connect wires to terminals per wiring diagram on wiring cover underside.
Verify all connections secure.
Note: When connecting the wires of indoor and outdoor units, the power should be off.
NOTE: Power supply to outdoor unit only (115V/230V). Indoor/outdoor wiring per diagram.
CRITICAL:
Incorrect wiring
creates fire/electrical
shock hazard. Verify
before powering on.
9K-12K (115V):
9K/12K/18K/24K (230V):
OUTDOOR UNIT INSTALLATION
40
Electrical Specifications
SAC09SNV23-1 115V 15 20A
SAC12SNV23-1 115V 16 25A
SAC09SHV23-1 208-230V 10 15A
SAC12SHV23-1 208-230V 11 15A
SAC18SHV22-1 208-230V 12 20A
SAC24SHV22-1 208-230V 17 25A
Model Voltage MCA MOP (Breaker)
5.1 Remove valve cover (if equipped): Unscrew, grasp, press down gently.
5.3 Remove plastic covers from pipe ports. Inspect for debris - ensure clean.
5.4 Align centers, hand-tighten flare nuts finger-tight.
5.5 Two-wrench method: Hold valve body with spanner, torque flare nut
per INSTALLATION PRECAUTIONS table.
5.2 Remove protective caps from service valves.
Step 5: Connect Refrigerant Piping
CAUTION: Use exact torque values. Under/over-tightening causes leaks.
OUTDOOR UNIT INSTALLATION
41
Step 6: Vacuum Pumping and Leak Test
6.1 Remove protective caps from service port, low/high pressure valves using hex
wrench.
6.8 Open low pressure valve 1/4 turn (5 seconds) to break vacuum, then close
quickly. Disconnect charge hose.
6.2 Connect manifold gauge pressure hose to outdoor unit low pressure service port.
6.3 Connect charge hose from manifold gauge to vacuum pump.
6.6 Close low pressure manifold valve. Turn off vacuum pump.
6.10 Fully open low/high pressure valves with hex wrench.
6.11 Reinstall all protective caps.
6.12 Reinstall valve cover.
6.9 Test all joints with soapy water or electronic leak detector.
6.7 Hold vacuum 5 minutes. Gauge rebound ≤ 0.005 MPa.
6.4 Open low pressure valve on manifold gauge. Close high pressure valve.
6.5 Run vacuum pump ≥ 15 minutes until compound gauge reaches -0.1 MPa (-76 cmHg).
FAILING VACUUM TEST = LEAKS. Do not charge system.
TEST OPERATION
42
Pre-Test Run Inspections
DESCRIPTION
Electrical Safety
Installation Safety
Refrigerant Leak
Detection
INSPECTION METHOD
Verify power supply voltage matches specifications
Verify drainage pipe direction/smoothness
Inspect piping joints, outdoor valves, weld points
Leak detector: Use electronic detector per instructions
Tighten nuts if leaks found, retest
Check outdoor unit/mounting plate/indoor
unit security
Confirm no tools/foreign objects inside unit
Check power/signal/earth wire connections
Confirm refrigerant pipe joints complete
Foam method: Apply soapy water, check
for bubbles
≥ 3 minutes per location
Wrap exposed joints with insulation tape
4.1 Outlet air temp changes (cool/heat).
4.2 Drainage flows properly
4.3 Louver/deflectors (if equipped) operate correctly
Verify all valves fully open
Install air inlet grille/panel
Confirm earth/insulation resistance meets
requirements
Test Run Instructions
1. Turn power ON.
2. Press ON/OFF on remote to start unit.
4. Verify all functions respond to remote:
3. Set COOL (lowest temp) → Run 8 minutes
Set HEAT (highest temp) → Run 8 minutes.
FAIL = Do NOT commission system. Recheck all connections/installation.
TEST OPERATION
MAINTENANCE
43
Complete Test Run
WARNING:
Filter Disassembly and Assembly (Detailed)
5. Monitor operation ≥ 30 minutes.
6. Return to normal settings, press ON/OFF to shut down.
7. User handover: Demonstrate operation, maintenance, accessory storage.
Wring dry → Gently wipe unit surface
NOTE: If ambient temp exceeds operating range, use emergency button
(front panel) for COOL/HEAT.
Power OFF ≥ 5 minutes before cleaning
Lift filter upwards to remove completely.
No volatile cleaners (thinner/gasoline) - use soft dry cloth or neutral detergent
Then press upper end of filter into buckling position in unit, securing firmly.
Never flush with water
To reinstall, insert lower end of filter into designated slot first.
Clean filter regularly (more frequent in dusty areas)
Grasp raised handle on filter and pull outward in direction away from unit
to separate upper edge of filter from unit.
Do not touch indoor fins after filter removal
Filter Cleaning:
1. Grasp handle, pull filter **upward/outward**
TIP: Frequent cleaning maintains performance.
2. Rinse, dry completely
3. Insert **bottom edge first**, snap **top edge** into place
MAINTENANCE
44
Filter Cleaning Sequence
Service & Long-Term Storage
Cleaning Inner Air Duct
1. Loosen knob at louver center, bend louver outward to remove.
1. Clean unit and filter screen.
2. Check air inlets/outlets (indoor/outdoor) for obstructions
3. Verify drain pipe unobstructed
4. Install remote batteries, confirm power ON
2. Grasp both sides of bottom plate, push downward to remove.
3. Release deflector assembly buckle with thumb to remove.
4. Wipe air duct and fan assembly with clean, wrung-out wet rag.
6. Reinstall parts in reverse order.
5. Wash removed parts (louver, deflector, bottom plate) with soapy water;
air dry completely (<104°F/40°C).
TIP: Clean immediately when dust accumulates to ensure clean, healthy, efficient air
conditioner operation
Not in use (long term):
Restarting after long shutdown:
Disconnect power supply
Remove remote batteries
TROUBLESHOOTING
45
MALFUNCTION
Appliance does
not operate
Noise of
running water
Fine mist
from air outlet
Insufficient airflow
(hot or cold)
Appliance does
not respond to
commands
Display is off
Strange odor
Strange noise
POSSIBLE CAUSES
Power failure or plug pulled out
Faulty protective device or fuses
Loose connections or plug pulled out
Unit stops operating to protect appliance
Voltage higher/lower than rated range
Active TIMER-ON function
Damaged electronic control board
Remote control not close enough to indoor unit
Remote control batteries need replacement
Active DISPLAY function
Other heat sources in room
Dirty air filter
Unsuitable temperature setting
Damaged indoor/outdoor unit fan motor
Faulty compressor thermomagnetic circuit breaker
Dirty air filter
Back flow of liquid in refrigerant circuit
Expansion/contraction of front panel due to
temperature variations (normal)
Obstacles between remote and indoor unit signal receiver
Power failure
No refrigerant
Fan speed set to minimum
Obstructed air conditioner intakes/outlets
Occurs when room air becomes very cold
(“COOLING” or “DEHUMIDIFYING/DRY” modes)
TROUBLESHOOTING
46
Immediate Shutdown Required:
Strange noises during operation
Faulty fuses/switches
Faulty electronic control board
Spraying water/objects inside appliance
Overheated cables/plugs
Strong smells from appliance
Error Codes
DISPLAY DESCRIPTION
Indoor room temperature sensor fault
Indoor pipe temperature sensor fault
Outdoor pipe temperature sensor fault
Refrigerant system leakage or fault
Malfunction of indoor fan motor
Outdoor ambient temperature sensor fault
Indoor and outdoor communication fault
Outdoor discharge temperature sensor fault
Outdoor IPM module fault
Outdoor current detect fault
Outdoor PCB EEPROM fault
Outdoor fan motor fault
Outdoor suction temperature sensor fault
DISPOSAL GUIDELINE
47
Designated municipal e-waste facility
Manufacturer take-back (free)
Retailer take-back (free with new purchase)
Certified scrap metal dealers
Contains refrigerant + hazardous materials. Special handling required.
NEVER dispose in forests/natural areas - hazardous substances leach into
groundwater/food chain.
DO NOT dispose as household/municipal waste.
Approved disposal options:
ELECTROLUX is a pending or registered trademark used under license
from AB Electrolux (publ).
