Operating Instructions
Air Conditioner
Before operating the unit, please read these operating
instructions thoroughly and keep them for future reference.
Before installation, the installer should:
Read the Installation Instructions, then request the customer
keep them for future reference.
Remove the remote control packed with the indoor unit.
* Kindly consult authorised dealer for connectivity validity.
Model No.
Indoor Unit Outdoor Unit
Single Split
CS-Z20XKRW
CS-Z25XKRW
CS-Z25XKRW-1
CS-Z35XKRW
CS-Z42XKRW
CS-Z50XKRW
CU-Z20XKR
CU-Z25XKR
CU-Z25XKR-1
CU-Z35XKR
CU-Z42XKR
CU-Z50XKR
* Outdoor Unit
Multi Split
CU-2Z52VBR
CU-3Z54VBR
CU-4Z71VBR
CU-4Z80VBR
CU-5Z100VBR
ACXF55-31320
Operating Instructions
Air Conditioner
nanoeX
English
2
A new built-in Network Adaptor that allows you to control
your air conditioner unit operation from anywhere.
Use the remote
control within 8 m
from the remote
control receiver
on the indoor unit.
Quick Guide
Flexibility to connect
Single Split System or
Multi Split System Air
Conditioner to suit your
needs.
For complete product features,
please refer to catalogue.
Inserting the batteries
1
2
3
1
Pull out the back cover
of remote control.
2
Insert AAA or R03
batteries.
3
Close the cover.
A
Clock setting
1
Press
CLOCK
, then
press
to set the
time.
• Press
CLOCK
for
approximately 5
seconds to show
the time as 12-hour
(am/pm) or 24-hour.
2
Press to confi rm.
B
A
POWERFUL/
ECO
3
Table of Contents
Safety Precautions
……
4-11
How to Use
…………………
12-14
To Learn More...
………
15-16
Cleaning the
Air Conditioner
………………
17
Troubleshooting
…………
18-21
Information………………… 22
Accessories
• Remote control
• AAA or R03 batteries × 2
• Remote control holder
• Screws for remote control
holder × 2
The illustrations in this manual are for
explanation purposes only and may differ
from the actual unit. They are subject to
change without notice.
B
Basic operation
Thank you for purchasing
Panasonic Air Conditioner.
1
Press
to
start/stop the
operation.
POWER
• When the unit
is ON,
disappears from
the remote control
display.
3
Press TEMP UP, TEMP
DOWN to select the desired
temperature.
Up
Down
Selection range:
16.0 °C ~ 30.0 °C /
60 °F ~ 86 °F.
• Press
for approximately
10 seconds to show the
temperature as °C or °F.
2
Press
to select
the desired mode.
AUTO HEAT COOL
FANiAUTO-X DRY
English
4
Safety Precautions
To prevent personal injury, injury to others or property
damage, please comply with the following:
Incorrect operation due to failure to follow instructions
below may cause harm or damage, the seriousness of
which is classifi ed as below:
This appliances is not intended for accessibility by the
general public.
WARNING
This sign warns of death
or serious injury.
CAUTION
This sign warns of injury
or damage to property.
The instructions to be followed are classifi ed by the
following symbols:
This symbol denotes an action that
is PROHIBITED.
These symbols denote actions
COMPULSORY.
Indoor unit
Outdoor unit
Power supply
Remote control
Air inlet
Air inlet
Air inlet
Air inlet
Air outlet
Air outlet
Air outlet
Air outlet
WARNING
Indoor unit and outdoor unit
This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they
have been given supervision or instruction
concerning use of the appliance by a person
responsible for their safety. Children should be
supervised to ensure that they do not play with
the appliance.
Please consult an authorised dealer or
specialist to clean the internal parts, repair,
install, remove, disassemble and reinstall the
unit. Improper installation and handling will
cause leakage, electric shock or fi re.
Confi rm with authorised dealer or specialist on
usage of any specifi ed refrigerant type. Using
refrigerant type other than the specifi ed may
cause product damage, burst and injury etc.
Do not use means to accelerate the defrosting
process or to clean, other than those
recommended by manufacturer.
Any unfi t method or using incompatible material
may cause product damage, burst and serious
injury.
Do not install the unit in a potentially explosive
or fl ammable atmosphere.
Failure to do so could result in fi re.
Do not insert your fi ngers or other
objects into the air conditioner indoor
or outdoor unit, rotating parts may
cause injury.
Do not touch the outdoor unit during lightning, it
may cause electric shock.
Do not expose yourself directly to cold air for a
long period to avoid excess cooling.
Do not sit or step on the unit, you may
fall down accidentally.
Remote control
Do not allow infants and small children to play
with the remote control to prevent them from
accidentally swallowing the batteries.
5
Power supply
Do not use a modifi ed cord,
joint cord, extension cord or
unspecifi ed cord to prevent
overheating and fi re.
To prevent overheating, fi re or electric shock:
• Do not share the same power outlet with other
equipment.
• Do not operate with wet hands.
• Do not over bend the power supply cord.
• Do not operate or stop the unit by inserting or
pulling out the power plug.
If the supply cord is damaged, it must be
replaced by the manufacturer, service agent
or similarly qualifi ed persons in order to avoid
a hazard.
It is strongly recommended to be installed
with Earth Leakage Circuit Breaker (ELCB)
or Residual Current Device (RCD) to prevent
electric shock or fi re.
To prevent overheating, fi re or electric shock:
• Insert the power plug properly.
• Dust on the power plug should be periodically
wiped with a dry cloth.
Stop using the product if any abnormality/
failure occurs and disconnect the power plug or
turn off the power switch and breaker.
(Risk of smoke/fi re/electric shock)
Examples of abnormality/failure
• The ELCB trips frequently.
• Burning smell is observed.
• Abnormal noise or vibration of the unit is
observed.
• Water leaks from the indoor unit.
• Power cord or plug becomes abnormally hot.
• Fan speed cannot be controlled.
• The unit stops running immediately even if it
is switched on for operation.
• The fan does not stop even if the operation
is stopped.
Contact your local dealer immediately for
maintenance/repair.
This equipment must be earthed to prevent
electrical shock or fi re.
Prevent electric shock by switching off the
power supply and unplug:
- Before cleaning or servicing,
- When extended non-use, or
- During abnormally strong lightning activity.
Safety Precautions
CAUTION
Indoor unit and outdoor unit
Do not wash the indoor unit with water,
benzine, thinner or scouring powder to avoid
damage or corrosion at the unit.
Do not use for preservation of precise
equipment, food, animals, plants, artwork
or other objects. This may cause quality
deterioration, etc.
Do not use any combustible equipment in front
of the airfl ow outlet to avoid fi re propagation.
Do not expose plants or pet directly to airfl ow to
avoid injury, etc.
Do not touch the sharp aluminium fi n,
sharp parts may cause injury.
Do not switch ON the indoor unit when waxing
the fl oor. After waxing, aerate the room properly
before operating the unit.
Do not install the unit in oily and smoky areas
to prevent damage to the unit.
Do not dismantle the unit for cleaning purpose
to avoid injury.
Do not step onto an unstable bench when
cleaning the unit to avoid injury.
Do not place a vase or water container on the
unit. Water may enter the unit and degrade the
insulation. This may cause an electric shock.
Do not open window or door for long time
during operation, it may lead to ineffi cient
power usage and uncomfortable temperature
changes.
Prevent water leakage by ensuring drainage
pipe is:
- Connected properly,
- Kept clear of gutters and containers, or
- Not immersed in water
After a long period of use or use with any
combustible equipment, aerate the room
regularly.
After a long period of use, make sure the
installation rack does not deteriorate to prevent
the unit from falling down.
Remote control
Do not use rechargeable (Ni-Cd) batteries. It
may damage the remote control.
To prevent malfunction or damage of the
remote control:
• Remove the batteries if the unit is not going to
be used for a long period of time.
• New batteries of the same type must be
inserted following the polarity stated.
Power supply
Do not disconnect the plug by pulling the cord
to prevent electric shock.
English
6
Safety Precautions
WARNING
This appliance is fi lled with R32
(mild fl ammable refrigerant).
If the refrigerant is leaked and exposed to
an external ignition source, there is a risk
of fi re.
Indoor unit and outdoor unit
The appliance shall be installed, and/or
operated in a room with fl oor area larger
than Amin (m²) and keep away from ignition
sources, such as heat/sparks/open fl ame or
hazardous areas such as gas appliances, gas
cooking, reticulated gas supply systems or
electric cooking appliances, etc. (Refer to Table
A of Installation instructions table for Amin (m²))
Be aware that refrigerant may not contain an
odour, highly recommended to ensure suitable
fl ammable refrigerant gas detectors are
present, operating and able to warn of a leak.
Keep any required ventilation openings clear of
obstruction.
Do not pierce or burn as the appliance is
pressurized. Do not expose the appliance to
heat, fl ame, sparks, or other sources of ignition.
Else it may explode and cause injury or death.
Precaution for using R32 refrigerant
The basic installation work procedures are the same as
conventional refrigerant (R410A, R22) models.
Since the working pressure is higher than that
of refrigerant R22 models, some of the piping
and installation and service tools are special.
Especially, when replacing a refrigerant R22
model with a new refrigerant R32 model,
always replace the conventional piping and
fl are nuts with the R32 and R410A piping and
fl are nuts on the outdoor unit side.
For R32 and R410A, the same fl are nut on the
outdoor unit side and pipe can be used.
The mixing of different refrigerants within
a system is prohibited. Models that use
refrigerant R32 and R410A have a different
charging port thread diameter to prevent
erroneous charging with refrigerant R22 and
for safety.
Therefore, check beforehand. [The charging
port thread diameter for R32 and R410A is 1/2
inch.]
Must always ensure that foreign matter (oil,
water, etc.) does not enter the piping. Also,
when storing the piping, securely seal the
opening by pinching, taping, etc. (Handling of
R32 is similar to R410A.)
• Operation, maintenance, repairing and
refrigerant recovery should be carried
out by trained and certifi ed personnel in
the use of fl ammable refrigerants and as
recommended by the manufacturer. Any
personnel conducting an operation, servicing
or maintenance on a system or associated
parts of the equipment should be trained and
certifi ed.
• Any part of refrigerating circuit (evaporators,
air coolers, AHU, condensers or liquid
receivers) or piping should not be located in
the proximity of heat sources, open fl ames,
operating gas appliance or an operating
electric heater.
• The user/owner or their authorised
representative shall regularly check the
alarms, mechanical ventilation and detectors,
at least once a year, where as required by
national regulations, to ensure their correct
functioning.
• A logbook shall be maintained. The results
of these checks shall be recorded in the
logbook.
• In case of ventilations in occupied spaces
shall be checked to confi rm no obstruction.
• Before a new refrigerating system is put
into service, the person responsible for
placing the system in operation should
ensure that trained and certifi ed operating
personnel are instructed on the basis of the
instruction manual about the construction,
supervision, operation and maintenance of
the refrigerating system, as well as the safety
measures to be observed, and the properties
and handling of the refrigerant used.
• The general requirement of trained and
certifi ed personnel are indicated as below:
a) Knowledge of legislation, regulations
and standards relating to fl ammable
refrigerants; and,
b) Detailed knowledge of and skills in
handling fl ammable refrigerants, personal
protective equipment, refrigerant leakage
prevention, handling of cylinders, charging,
leak detection, recovery and disposal; and,
c) Able to understand and to apply in practice
the requirements in the national legislation,
regulations and Standards; and,
d) Continuously undergo regular and further
training to maintain this expertise.
e) Air-conditioner piping in the occupied
space shall be installed in such a way
to protect against accidental damage in
operation and service.
7
f) Precautions shall be taken to avoid
excessive vibration or pulsation to
refrigerating piping.
g) Ensure protection devices, refrigerating
piping and fittings are well protected
against adverse environmental effects
(such as the danger of water collecting and
freezing in relief pipes or the accumulation
of dirt and debris).
h) Expansion and contraction of long runs
piping in refrigerating systems shall be
designed and installed securely (mounted
and guarded) to minimize the likelihood
hydraulic shock damaging the system.
i) Protect the refrigerating system from
accidental rupture due to moving furniture
or reconstruction activities.
j) To ensure no leaking, field-made refrigerant
joints indoors shall be tightness tested.
The test method shall 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 (>1.04 MPa,
max 4.15 MPa). No leak shall be detected.
1. Installation (Space)
• Product with flammable refrigerants, shall
be installed according to the minimum room
area, Amin (m²) mentioned in Table A of the
Installation Instructions.
• In case of fi eld charge, the effect on
refrigerant charge caused by the different pipe
length has to be quantifi ed, measured and
labelled.
• Must ensure the installation of pipe-work shall
be kept to a minimum. Avoid use dented pipe
and do not allow acute bending.
• Must ensure that pipe-work shall be protected
from physical damage.
• Must comply with national gas regulations,
state municipal rules and legislation. Notify
relevant authorities in accordance with all
applicable regulations.
• Must ensure mechanical connections be
accessible for maintenance purposes.
• In cases that require mechanical ventilation,
ventilation openings shall be kept clear of
obstruction.
• When disposal of the product, do follow to the
precautions in #12 and comply with national
regulations.
Always contact to local municipal offi ces for
proper handling.
2. Servicing
2-1. Service personnel
• The system is inspected, regularly supervised
and maintained by a trained and certifi ed
service personnel who is employed by the
person user or party responsible.
• Ensure the actual refrigerant charge is in
accordance with the room size within which
the refrigerant containing parts are installed.
• Ensure refrigerant charge not to leak.
• Any qualifi ed person who is involved with
working on or breaking into a refrigerant
circuit should hold a current valid certifi cate
from an industry-accredited assessment
authority, which authorizes their competence
to handle refrigerants safely in accordance
with an industry recognised assessment
specifi cation.
• Servicing shall only be performed
as recommended by the equipment
manufacturer. Maintenance and repair
requiring the assistance of other skilled
personnel shall be carried out under the
supervision of the person competent in the
use of fl ammable refrigerants.
• Servicing shall be performed only as
recommended by the manufacturer.
2-2. Work
• Prior to beginning work on systems containing
fl ammable refrigerants, safety checks are
necessary to ensure that the risk of ignition
is minimised. For repair to the refrigerating
system, the precautions in #2-2 to #2-8 must
be followed before conducting work on the
system.
• Work shall be undertaken under a controlled
procedure so as to minimize the risk of a
fl ammable gas or vapour being present while
the work is being performed.
• All maintenance staff and others working
in the local area shall be instructed and
supervised on the nature of work being
carried out.
• Avoid working in confi ned spaces. Always
ensure away from source, at least 2 meter of
safety distance, or zoning of free space area
of at least 2 meter in radius.
• Wear appropriate protective equipment,
including respiratory protection, as conditions
warrant.
• Keep all sources of ignition and hot metal
surfaces away.
Safety PrecautionsEnglish
8
Safety Precautions
2-3. Checking for presence of refrigerant
• The area shall be checked with an
appropriate refrigerant detector prior to and
during work, to ensure the technician is aware
of potentially fl ammable atmospheres.
• Ensure that the leak detection equipment
being used is suitable for use with fl ammable
refrigerants, i.e. non sparking, adequately
sealed or intrinsically safe.
• In case of leakage/spillage happened,
immediately ventilate area and stay upwind
and away from spill/release.
• In case of leakage/spillage happened, do
notify persons down wind of the leaking/
spill, isolate immediate hazard area and keep
unauthorised personnel out.
2-4. Presence of fi re extinguisher
• If any hot work is to be conducted on the
refrigerating equipment or any associated
parts, appropriate fire extinguishing
equipment shall be available at hand.
• Have a dry powder or CO
2
fi re extinguisher
adjacent to the charging area.
2-5. No ignition sources
• No person carrying out work in relation to a
refrigerating system which involves exposing
any pipe work that contains or has contained
flammable refrigerant shall use any sources
of ignition in such a manner that it may lead to
the risk of fire or explosion. He/She must not
be smoking when carrying out such work.
• All possible ignition sources, including
cigarette smoking, should be kept suffi ciently
far away from the site of installation,
repairing, removing and disposal, during
which fl ammable refrigerant can possibly be
released to the surrounding space.
• Prior to work taking place, the area around
the equipment is to be surveyed to make
sure that there are no fl ammable hazards or
ignition risks.
• “No Smoking” signs shall be displayed.
2-6. Ventilated area
• Ensure that the area is in the open or that it is
adequately ventilated before breaking into the
system or conducting any hot work.
• A degree of ventilation shall continue during
the period that the work is carried out.
• The ventilation should safely disperse any
released refrigerant and preferably expel it
externally into the atmosphere.
2-7. Checks to the refrigerating equipment
• Where electrical components are being
changed, they shall be fi t for the purpose and
to the correct specifi cation.
• At all times the manufacturer’s maintenance
and service guidelines shall be followed.
• If in doubt consult the manufacturer’s
technical department for assistance.
• The following checks shall be applied to
installations using fl ammable refrigerants.
- The actual refrigerant charge is in
accordance with the room size within
which the refrigerant containing parts are
installed.
- The ventilation machinery and outlets
are operating adequately and are not
obstructed.
- If an indirect refrigerating circuit is being
used, the secondary circuit shall be
checked for the presence of refrigerant.
- Marking to the equipment continues to be
visible and legible. Markings and signs that
are illegible shall be corrected.
- Refrigerating pipe or components are
installed in a position where they are
unlikely to be exposed to any substance
which may corrode refrigerant containing
components, unless the components
are constructed of materials which are
inherently resistant to being corroded or
are properly protected against being so
corroded.
2-8. Checks to electrical devices
• Repair and maintenance to electrical
components shall include initial safety checks
and component inspection procedures.
• Initial safety checks shall include but not limit
to:-
- That capacitors are discharged: this
shall be done in a safe manner to avoid
possibility of sparking.
- That there no live electrical components
and wiring are exposed while charging,
recovering or purging the system.
- That there is continuity of earth bonding.
• At all times the manufacturer’s maintenance
and service guidelines shall be followed.
• If in doubt consult the manufacturer’s
technical department for assistance.
• If a fault exists that could compromise safety,
then no electrical supply shall be connected to
the circuit until it is satisfactorily dealt with.
• If the fault cannot be corrected immediately
but it is necessary to continue operation, an
adequate temporary solution shall be used.
• The owner of the equipment must be
informed or reported so all parties are advised
thereinafter.
9
3. Repairs to sealed components
• During repairs to sealed components, all
electrical supplies shall be disconnected from
the equipment being worked upon prior to any
removal of sealed covers, etc.
• If it is absolutely necessary to have an
electrical supply to equipment during
servicing, then a permanently operating
form of leak detection shall be located at the
most critical point to warn of a potentially
hazardous situation.
• Particular attention shall be paid to the
following to ensure that by working on
electrical components, the casing is not
altered in such a way that the level of
protection is affected. This shall include
damage to cables, excessive number of
connections, terminals not made to original
specifi cation, damage to seals, incorrect fi tting
of glands, etc.
• Ensure that apparatus is mounted securely.
• Ensure that seals or sealing materials have
not degraded such that they no longer serve
the purpose of preventing the ingress of
fl ammable atmospheres.
• Replacement parts shall be in accordance
with the manufacturer’s specifi cations.
NOTE: The use of silicon sealant may inhibit
the effectiveness of some types of leak
detection equipment.
Intrinsically safe components do not have to be
isolated prior to working on them.
4. Repair to intrinsically safe components
• Do not apply any permanent inductive or
capacitance loads to the circuit without
ensuring that this will not exceed the
permissible voltage and current permitted for
the equipment in use.
• Intrinsically safe components are the only
types that can be worked on while live in the
presence of a fl ammable atmosphere.
• The test apparatus shall be at the correct
rating.
• Replace components only with parts specifi ed
by the manufacturer. Unspecifi ed parts by
manufacturer may result ignition of refrigerant
in the atmosphere from a leak.
5. Cabling
• Check that cabling will not be subject
to wear, corrosion, excessive pressure,
vibration, sharp edges or any other adverse
environmental effects.
• The check shall also take into account the
effects of aging or continual vibration from
sources such as compressors or fans.
6. Detection of fl ammable refrigerants
• Under no circumstances shall potential
sources of ignition be used in the searching or
detection of refrigerant leaks.
• A halide torch (or any other detector using a
naked fl ame) shall not be used.
7. The following leak detection methods
are deemed acceptable for all refrigerant
systems
• No leaks shall be detected when using
detection equipment with a sensitivity of
5 grams per year of refrigerant or better
under a pressure of at least 0.25 times the
maximum allowable pressure (>1.04 MPa,
max 4.15 MPa), for example, a universal
sniffer.
• Electronic leak detectors may be used
to detect fl ammable refrigerants, but the
sensitivity may not be adequate, or may need
re-calibration.
(Detection equipment shall be calibrated in a
refrigerant-free area.)
• Ensure that the detector is not a potential
source of ignition and is suitable for the
refrigerant used.
• Leak detection equipment shall be set at a
percentage of the LFL of the refrigerant and
shall be calibrated to the refrigerant employed
and the appropriate percentage of gas (25 %
maximum) is confi rmed.
• Leak detection fluids are also suitable for use
with most refrigerants, for example, bubble
method and fluorescent method agents. The
use of detergents containing chlorine shall
be avoided as the chlorine may react with the
refrigerant and corrode the copper pipe-work.
• If a leak is suspected, all naked fl ames shall
be removed/extinguished.
• If a leakage of refrigerant is found which
requires brazing, all of the refrigerant shall
be recovered from the system, or isolated
(by means of shut off valves) in a part of the
system remote from the leak. The precautions
in #8 must be followed to remove the
refrigerant.
Safety PrecautionsEnglish
10
Safety Precautions
8. Removal and evacuation
• When breaking into the refrigerant circuit
to make repairs – or for any other purpose
– conventional procedures shall be used.
However, it is important that best practice is
followed since fl ammability is a consideration.
The following procedure shall be adhered to:
remove refrigerant -> purge the circuit with
inert gas -> evacuate -> purge with inert gas
-> open the circuit by cutting or brazing.
• The refrigerant charge shall be recovered into
the correct recovery cylinders.
• The system shall be purged with OFN to
render the appliance safe.
• This process may need to be repeated
several times.
• Compressed air or oxygen shall not be used
for this task.
• Purging shall be achieved by breaking
the vacuum in the system with OFN and
continuing to fill until the working pressure is
achieved, then venting to atmosphere, and
finally pulling down to a vacuum.
• This process shall be repeated until no
refrigerant is within the system.
• When the fi nal OFN charge is used, the
system shall be vented down to atmospheric
pressure to enable work to take place.
• This operation is absolutely vital if brazing
operations on the pipe work are to take place.
• Ensure that the outlet for the vacuum pump is
not close to any potential ignition sources and
there is ventilation available.
OFN = oxygen free nitrogen, type of inert gas.
9. Charging procedures
• In addition to conventional charging
procedures, the following requirements shall
be followed.
- Ensure that contamination of different
refrigerants does not occur when using
charging equipment.
- Hoses or lines shall be as short as possible
to minimize the amount of refrigerant
contained in them.
- Cylinders shall be kept in an appropriate
position according to the instructions.
- Ensure that the refrigerating system is
earthed prior to charging the system with
refrigerant.
- Label the system when charging is
complete (if not already).
- Extreme care shall be taken not to over fill
the refrigerating system.
• Prior to recharging the system it shall be
pressure tested with OFN (refer to #7).
• The system shall be leak tested on completion
of charging but prior to commissioning.
• A follow up leak test shall be carried out prior
to leaving the site.
• Electrostatic charge may accumulate and
create a hazardous condition when charging
and discharging the refrigerant. To avoid fi re
or explosion, dissipate static electricity during
transfer by grounding and bonding containers
and equipment before charging/discharging.
10. 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 the task being carried out, an oil
and refrigerant sample shall be taken in
case analysis is required prior to re-use of
recovered refrigerant.
• It is essential that electrical power is available
before the task is commenced.
a) Become familiar with the equipment and
its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure
that:
• mechanical handling equipment is
available, if required, for handling
refrigerant cylinders;
• all personal protective equipment is
available and being used correctly;
• the recovery process is supervised at all
times by a competent person;
• recovery equipment and cylinders conform
to the appropriate standards.
d) Pump down refrigerant system, if possible.
11
e) If a vacuum is not possible, make a
manifold so that refrigerant can be
removed from various parts of the system.
f) Make sure that cylinder is situated on the
scales before recovery takes place.
g) Start the recovery machine and operate in
accordance with instructions.
h) Do not over fi ll 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 fi lled
correctly and the process completed, make
sure that the cylinders and the equipment
are removed from site promptly and all
isolation valves on the equipment are
closed off.
k) Recovered refrigerant shall not be charged
into another refrigerating system unless it
has been cleaned and checked.
• Electrostatic charge may accumulate and
create a hazardous condition when charging
or discharging the refrigerant. To avoid fi re or
explosion, dissipate static electricity during
transfer by grounding and bonding containers
and equipment before charging/discharging.
11. Labelling
• Equipment shall be labelled stating that it
has been de-commissioned and emptied of
refrigerant.
• The label shall be dated and signed.
• Ensure that there are labels on the equipment
stating the equipment contains fl ammable
refrigerant.
12. Recovery
• When removing refrigerant from a system,
either for servicing or decommissioning,
it is recommended good practice that all
refrigerants are removed 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.
• All cylinders to be used are designated for
the recovered refrigerant and labelled for
that refrigerant (i.e. special cylinders for the
recovery of refrigerant).
• Cylinders shall be complete with pressure
relief valve and associated shut-off valves in
good working order.
• Recovery cylinders are evacuated and, if
possible, cooled before recovery occurs.
• The recovery equipment shall be in good
working order with a set of instructions
concerning the equipment that is at hand and
shall be suitable for the recovery of fl ammable
refrigerants.
• In addition, a set of calibrated weighing scales
shall be available and in good working order.
• Hoses shall be complete with leak-free
disconnect couplings and in good condition.
• Before using the recovery machine, check
that it is in satisfactory working order, has
been properly maintained and that any
associated electrical components are sealed
to prevent ignition in the event of a refrigerant
release. Consult manufacturer if in doubt.
• The recovered refrigerant shall be returned to
the refrigerant supplier in the correct recovery
cylinder, and the relevant Waste Transfer
Note arranged.
• Do not mix refrigerants in recovery units and
especially not in cylinders.
• If compressors or compressor oils are to
be removed, ensure that they have been
evacuated to an acceptable level to make
certain that fl ammable refrigerant does not
remain within the lubricant.
• The evacuation process shall be carried
out prior to returning the compressor to the
suppliers.
• Only electric heating to the compressor body
shall be employed to accelerate this process.
• When oil is drained from a system, it shall be
carried out safely.
Safety PrecautionsEnglish
12
How to Use
To adjust airfl ow direction To adjust airfl ow direction
POWERFUL/
ECO
FAN SPEED:
• When FAN AUTO is selected, the fan speed is
adjusted automatically according to the operation
mode.
• Select the lowest fan speed
to have a low noise
operation.
• When iAUTO-X mode is selected, the fan speed is
automatically set to AUTO. To adjust the fan speed,
cancel iAUTO-X mode.
QUIET:
• This operation reduces airfl ow noise.
To adjust FAN SPEED and QUIET condition
To enjoy fresher and cleaner environment
• This operation provides cleaner air, moisturises your
skin and hair, and deodorises odours in the room.
• Press nanoe™X to activate this operation, either
when the unit is ON or OFF. During nanoe™X
individual operation, the fan speed will follow the
remote control setting.
• If nanoe™X is activated before the unit is turned off,
the nanoe™X operation will resume when the unit is
turned on. This includes when TIMER ON is set.
nanoeX
Indicators
POWER
TIMER
nanoeX
Upper direction
Lateral direction
Upper direction:
• Do not adjust the fl ap by hand.
* For details operation, refer “To Learn More....”
Lateral direction:
• For lateral direction, it is
manually adjustable as
shown.
Lateral
direction
Not used
in normal
operation.
Press to restore the
remote control to
default setting.
Press to turn
the Wireless
LAN feature
ON or OFF.
13
See "To Learn More..." for details.
POWERFUL:
To reach the desired temperature quickly
• This operation is automatically stop after 20 minutes.
ECO:
• To reduce power consumption for better energy saving without sacrifi cing comfort.
• ECO function cannot be activated during iAUTO-X mode.
To switch between POWERFUL/ECO
(exit setting)
• When iAUTO-X mode is turned on, the unit automatically reduces the temperature by 2°C
(4°F) from the set temperature to accelerate the room cooling effect.
• Fan speed is set to AUTO and you cannot change the fan speed.
• After a maximum of 4 hours, the unit returns to the last set temperature. To extend iAUTO-X
operation, press
again to reactivate the iAUTO-X.
• When the room has reached set temperature, and room temperature is > 23°C and room
humidity is > 60%, iAUTO-X will operate at a predetermined setting.
• When room humidity is high, fan speed will operate at lower speed.
• When the unit is OFF and you want to reach the desired temperature quickly, press
to turn on the unit in iAUTO-X mode.
To reach the desired temperature quickly
• For Wireless LAN Module operation setup, please refer to Setup Instructions
Manual.
To connect to a network
• This operation provides you with a comfortable environment while sleeping. It will
automatically adjust the sleep pattern temperature during the activation period.
• The indoor unit indicator will dim when this operation is activated. This is not applicable if
the indicator brightness has been manually dimmed.
• This operation is incorporated with the activation timer (0.5, 1, 2, 3, 4, 5, 6, 7, 8 or 9 hours).
• This operation can be set together with timer. Sleep operation has the priority over OFF
timer.
• This operation can be cancelled by pressing the respective button until the sleep timer
reaches 0.0h.
To maximise comfort while sleeping
Set temperature
iAUTO-X
-2°C /
-4°F
Max = 4 hours
How to UseEnglish
14
How to Use
To set the timer
You can set the timer to turn on and off the unit at 2 different preset time.
• To cancel the timer, press
or to
select the respective setting or , then
press
.
• If the timer has been cancelled manually or
due to power failure, you can restore the
timer again. Press
or to select
the respective setting
or , then press
.
• The nearest timer setting is displayed and
will activate in sequence.
• The timer operation follows the clock
setting on the remote control and will
repeat daily when timer has been set.
For clock setting, refer to Quick Guide.
Note
, ,
,
• Can be selected at the same time. • POWERFUL, QUIET and FAN SPEED
cannot be selected at the same time.
3
1
2
1
Select TIMER ON
or TIMER OFF.
Example:
OFF at 22:00
• Each time pressed:
(exit setting)
2 Set the time.
3 Confi rm the setting.
15
Energy saving temperature setting
You may save energy when operating the unit within the recommended temperature range.
HEAT : 20.0 °C ~ 24.0 °C / 68 °F ~ 75 °F.
COOL: 26.0 °C ~ 28.0 °C / 79 °F ~ 82 °F.
Air fl ow direction
In COOL/DRY mode:
The horizontal fl ap swings up/down automatically.
Once the temperature is achieved, the horizontal fl ap is fi xed at upper position.
In HEAT mode:
The horizontal fl ap fi xed at the predetermined position.
The vertical fl ap swings left/right when the temperature rises.
In COOL/DRY/HEAT mode:
The horizontal fl ap swings up/down automatically.
Auto restart control
When power is resumed after a power failure, the operation will restart automatically with the
last operation mode and airfl ow direction.
• This control is not applicable when TIMER is set.
To Learn More...
Single Single split system
Multi
Multi split system
Operation mode
• It is possible to operate the indoor units individually or simultaneously. The priority of
operation is placed on the fi rst unit that turned on.
• During operation, HEAT and COOL modes cannot activate at the same time for different
indoor units.
• The power indicator blinks to indicate the indoor unit is standing by for different operation
mode.
AUTO : The POWER indicator blinks at the initial stage.
Single
• The unit will select an operation mode every 10 minutes depending on the
setting and room temperature.
Multi
• The unit will select an operation mode every 3 hours depending on the setting,
room and outdoor temperature.
HEAT : The POWER indicator blinks at the initial stage. The unit will take some time to
warm up.
• If the HEAT mode system has been locked, and other operation mode is
selected, the indoor unit stops and the POWER indicator blinks.
COOL : Provides effi cient comfort cooling to suit your needs.
DRY : Operates at low fan speed for a gentle cooling operation.
FAN : To circulate air in the room.
iAUTO-X : Provides fast cooling operation which is ideal on a hot day.
How to Use / To Learn More... English
16
To Learn More...
Operating conditions
Use this air conditioner in the temperature range indicated in the table.
Temperature
°C (°F)
Indoor
Single split outdoor unit
*
1
Multi split outdoor unit *
2
DBT WBT DBT WBT DBT WBT
COOL
Max. 32 (89.6) 23 (73.4) 46 (114.8) 26 (78.8) 46 (114.8) 26 (78.8)
Min. 16 (60.8) 11 (51.8) -10 (14.0) - -10 (14.0) -
HEAT
Max. 30 (86.0) - 24 (75.2) 18 (64.4) 24 (75.2) 18 (64.4)
Min. 16 (60.8) - -15 (5.0) - -15 (5.0) -16 (3.2)
DBT: Dry bulb temperature, WBT: Wet bulb temperature
*
1
CU-Z20XKR, CU-Z25XKR, CU-Z25XKR-1, CU-Z35XKR, CU-Z42XKR, CU-Z50XKR
*
2
CU-2Z52VBR, CU-3Z54VBR, CU-4Z71VBR, CU-4Z80VBR, CU-5Z100VBR
17
Cleaning the Air Conditioner
Cleaning has to be carried out at regular
intervals to ensure the unit is at optimal
performance. A dirty unit may cause
malfunction and you may retrieve “H 99”
error code. Consult an authorised dealer.
• Before cleaning, switch off the power supply and
unplug the unit.
• Do not touch the aluminium fi n as the sharp parts
may cause injury.
• Do not use benzine, thinner or scouring powder.
• Use soap (
pH 7) or neutral household
detergent only.
• Do not use water hotter than 40 °C / 104 °F.
To Learn More... / Cleaning the Air Conditioner
Indoor unit
( Structure of the unit may vary depending
on the model)
AUTO
OFF/ON
nanoeX
Aluminium fi n
Front panel
Air fi lters
Air fi lters
Once every 2 weeks
• Wash/rinse the fi lters gently with
water to avoid damaging the
surface.
• Dry the fi lters thoroughly under a shade, away
from fi re or direct sunlight.
• Replace any damaged fi lters.
Remove air fi lter Attach air fi lter
Remove from the unit Insert into the unit
Indoor unit
Wipe the unit gently with a soft and
dry cloth.
The coils and fans should be
cleaned periodically by an
authorised dealer.
Outdoor unit
Clean the debris that surround the
unit.
Clear any blockage from the drain
pipe.
Front panel
Wash gently and dry.
How to remove front panel
Raise over
horizontal
level
1
Pull upward
2
Horizontal
Close it securely
1
Hold
horizontally
AUTO
OFF/ON
nanoeX
2
Match and push in
3
Close down
4
Press both ends and center of the front panel
English
18
Troubleshooting
The following symptoms do not indicate malfunction.
Symptom Cause
POWER indicator blinks before the unit is
switched on.
• This is the preliminary step to prepare for the TIMER
operation after it has been set.
When Timer is set ON, the unit may start earlier (up to
35 minutes) before the actual set time to achieve the
desired temperature on time.
POWER indicator blinks during HEAT mode
with no warm air supply (and fl ap is closed).
• The unit is in defrost mode (and AIR SWING has been
set to AUTO).
POWER indicator blinks, then stops blinking
during COOL/DRY mode.
• The system has been locked to operate in HEAT mode
only.
TIMER indicator is always ON. • When Timer has been set, the Timer setting repeats
daily.
Operation is delayed a few minutes after
restarting.
• The delay is a protection to the unit’s compressor.
Cooling/heating capacity is reduced during
lowest fan speed setting.
• The lowest fan speed is to have a low noise operation,
so cooling/heating capacity may be reduced depending
on the condition. Increase the fan speed to increase the
capacity.
In COOL mode, when the room temperature
reaches near the set temperature, the
compressor stops, then the indoor unit fan
speed reduced.
• To prevent the room humidty rising. The indoor fan will
resume running according to the set fan speed when
room temperature increase.
Indoor fan stops occasionally during heating
operation.
• To avoid unintended cooling effect.
Indoor fan stops occasionally during automatic
fan speed setting.
• This is to help remove the surrounding odour.
Airfl ow continues even after operation has
stopped.
• To extract the remaining heat from the indoor unit
(maximum 30 seconds).
The room has a peculiar odour. • This may be due to damp smell emitted by the wall,
carpet, furniture or clothing.
Cracking sound during operation. • Changes in temperature caused the unit to expand and
contract.
Water fl owing sound during operation. • Refrigerant fl ow inside the unit.
Mist emerges from indoor unit. • During cooling operation, the discharged cold air may
condense to water vapour.
Outdoor unit emits water or steam. • During cooling operation, condensation occurs on
cold pipes and the condensed water may drip from the
outdoor unit.
• During heating operation, frost formed on the outdoor
unit during deice cycle melts and is discharged as
water or steam.
Discoloration of some plastic parts. • Discoloration is subjected to the types of materials
used in plastic parts. It is accelerated when exposed to
heat, sun light, UV light or environmental factors.
Soft buzzing sound from indoor unit during
nanoe™X operation.
• It is normal when the nanoe™X generator is working.
If you are concerned about the sound, cancel the
nanoe™X operation.
Wireless LAN indicator is ON when the unit
is OFF.
• The unit’s wireless LAN connection with the router has
been activated.
19
Check the following before calling for servicing.
Symptom Check
Operation in HEAT/COOL mode is not working
effi ciently.
• Set the temperature correctly.
• Close all doors and windows.
• Clean or replace the fi lters.
• Clear any obstruction at the air inlet and air outlet
vents.
Noisy during operation. • Check if the unit has been installed at an incline.
• Close the front panel properly.
Remote control does not work.
(Display is dim or transmission signal is
weak.)
• Insert the batteries correctly.
• Replace weak batteries.
The unit does not work. • Check if the circuit breaker is tripped.
• Check if timers have been set.
The unit does not receive the signal from the
remote control.
• Make sure the receiver is not obstructed.
• Certain fl uorescent lights may interfere with the signal
transmitter. Consult an authorised dealer.
The nanoe™X indicator at the indoor unit is
not ON when nanoe™X is activated.
• Use the remote control to retrieve the error code and
consult an authorised dealer.
TroubleshootingEnglish
20
Troubleshooting
When...
■ The remote control is missing or a malfunction has occurred
AUTO
OFF/ON
( Structure of the
unit may vary
depending on the
model)
1. Raise the front panel.
2. Press AUTO OFF/ON once to use in AUTO mode.
3. Press AUTO OFF/ON until you hear 1 beep, then release to use in
forced COOL mode.
4. Press AUTO OFF/ON until you hear 2 beeps, then release to use in
forced HEAT mode.
5. Press AUTO OFF/ON again to turn off the unit.
■ The indicators are too bright
• To dim or restore the indicators’ brightness on the unit, press
on the remote for 5
seconds.
■ Conducting a seasonal inspection after extended period of non-use
• Check the batteries.
• Check that there is no obstruction around the air inlets and outlet vents.
• Use AUTO OFF/ON on the unit to select COOL or HEAT mode. For details, refer “The
remote control is missing or a malfunction has occurred” above. After 15 minutes of
operation, it is normal to have the following temperature difference between the air inlet and
outlet vents:
COOL: ≥ 8 °C / 14.4 °F
HEAT: ≥ 14 °C / 25.2 °F
■ The units will be not used for an extended period
• Activate HEAT mode for 2~3 hours to remove any moisture left in the internal parts
thoroughly. This is to prevent mould growth.
• Turn off the power supply and unplug the unit.
• Remove the batteries from the remote control.
NON SERVICEABLE CRITERIAS
TURN OFF THE POWER SUPPLY AND UNPLUG THE UNIT. Then consult an authorised
dealer in the following conditions:
• Abnormal noise during operation.
• Water/foreign particles have entered the remote control.
• Water is leaking from the indoor unit.
• The circuit breaker switches off frequently.
• The power cord becomes unnaturally warm.
• The switches or buttons are not functioning properly.
21
How to retrieve error codes
If the unit stops and the TIMER indicator blinks, use the remote control to retrieve the error code.
Press for
5 seconds
Press for 5
seconds to quit
checking
1
3
Press until you hear beep
sound, then write down the
error code
Turn the unit off and
inform the error code to an
authorised dealer.
2
4
•
For certain errors, you may restart the unit for limited operation if there are 4 beeps when operation starts.
Diagnostic
display
Abnormality/Protection control
H 00 No memory of failure
H 11
Indoor/outdoor abnormal
communication
H 12 Indoor unit capacity unmatched
H 14
Indoor intake air temperature sensor
abnormality
H 15
Outdoor compressor temperature
sensor abnormality
H 16
Outdoor current transformer (CT)
abnormality
H 17
Outdoor suction temperature sensor
abnormality
H 19 Indoor fan motor mechanism lock
H 21
Indoor fl oat switch operation
abnormality
H 23
Indoor heat exchanger temperature
sensor 1 abnormality
H 24
Indoor heat exchanger temperature
sensor 2 abnormality
H 25 Indoor ion device abnormality
H 26 Minus ION abnormality
H 27
Outdoor air temperature sensor
abnormality
H 28
Outdoor heat exchanger temperature
sensor 1 abnormality
H 30
Outdoor discharge pipe temperature
sensor abnormality
H 31 Abnormal swimming pool sensor
H 32
Outdoor heat exchanger temperature
sensor 2 abnormality
H 33
Indoor/outdoor misconnection
abnormality
H 34
Outdoor heat sink temperature sensor
abnormality
H 35
Indoor/outdoor water adverse current
abnormality
H 36
Outdoor gas pipe temperature
sensor abnormality
H 37
Outdoor liquid pipe temperature
sensor abnormality
H 38
Indoor/outdoor mismatch
(brand code)
H 39
Abnormal indoor operating unit or
standby units
Diagnostic
display
Abnormality/Protection control
H 41
Abnormal wiring or piping
connection
H 50 Ventilation fan motor locked
H 51 Ventilation fan motor locked
H 52
Left-right limit switch fi xing
abnormality
H 58 Indoor gas sensor abnormality
H 59 Eco sensor abnormality
H 64
Outdoor high pressure sensor
abnormality
H 67 nanoe abnormality
H 70 Light sensor abnormality
H 71
DC cooling fan inside control board
abnormality
H 72 Abnormality tank temperature sensor
H 85
Abnormal communication between
indoor & wireless LAN module
H 97 Outdoor fan motor mechanism lock
H 98 Indoor high pressure protection
H 99 Indoor operating unit freeze protection
F 11 4-way valve switching abnormality
F 16 Total running current protection
F 17
Indoor standby units freezing
abnormality
F 18 Dry circuit blocked abnormality
F 87 Control box overheat protection
F 90
Power factor correction (PFC)
circuit protection
F 91 Refrigeration cycle abnormality
F 93
Outdoor compressor abnormal
revolution
F 94
Compressor discharge pressure
overshoot protection
F 95
Outdoor cooling high pressure
protection
F 96
Power transistor module overheating
protection
F 97 Compressor overheating protection
F 98 Total running current protection
F 99
Outdoor direct current (DC) peak
detection
* Some error code may not be applicable to your model. Consult an authorised dealer for clarifi cation.
TroubleshootingEnglish
22
Information
Information for Users on Collection and Disposal of Old Equipment and used Batteries
[Information on Disposal in other Countries outside the European Union]
These symbols are only valid in the European Union. If you wish to discard
these items, please contact your local authorities or dealer and ask for the
correct method of disposal.
Pb
Note for the battery symbol (bottom two symbol examples):
This symbol might be used in combination with a chemical symbol. In this case
it complies with the requirement set by the Directive for the chemical involved.
WARNING
This symbol shows that this
equipment uses a fl ammable
refrigerant. If the refrigerant is
leaked, together with an external
ignition source, there is a
possibility of ignition.
This symbol shows that the
Operation Instructions should
be read carefully.
This symbol shows type of
fl ammable refrigerant contained
in the system.
This symbol shows that a service
personnel should be handling
this equipment with reference to
the Installation Instructions.
This symbol shows that there
is information included in the
Operation Instructions and/or
Installation Instructions.
23
Memo
InformationEnglish
Printed in Malaysia
Panasonic Corporation
1006 Kadoma, Kadoma City,
Osaka, Japan
Website: http://www.panasonic.com
© Panasonic Corporation 2021
ACXF55-31320
SS0621-0
