Panasonic CS-Z25UD3RAW User manual

English
Operating Instructions
Air Conditioner
Model No.
Indoor Unit Outdoor Unit
CS-Z25UD3RAW
CS-Z35UD3RAW
CS-Z50UD3RAW
CS-Z60UD3RAW
Single Split
CU-Z25UBRA
CU-Z35UBRA
CU-Z50UBRA
CU-Z60UBRA
* Outdoor Unit
Multi Split
CU-2Z50UBR
CU-3Z50UBR
CU-4Z68UBR
CU-4Z80UBR
CU-5Z90UBR
ACXF55-20830
Operating Instructions
Air Conditioner
Before operating the unit, please read these operating
instructions thoroughly and keep them for future reference.
The included Installation Instructions should be kept and read
by the installer before installation.
* Kindly consult authorised dealer for connectivity validity.

2
Quick Guide
Remote Control Preparation
aPress
CLOCK
bPress to set day
cConfirm
Repeat steps “b” and “c” to set the
current time.
OFF /ON
TEMP
TIMER/CLOCK
MODE
QUIET/
POWERFUL
FAN SPEED
MODE
CHECK RESET
AIR SWING
OFF/ON
CANCELCLOCK
SET
SELECTUP
DOWN
AC RC
3
1
abc
2
Flexibility to connect Single
Split System or Multi Split
System Air Conditioner to suit
your needs.
For complete product features,
please refer to catalogue.

3
English
Table of contents
Safety precautions ……… 4-15
How to use…………… 16-17
To learn more
……………… 18
Cleaning instructions
……… 19
Troubleshooting
……… 20-22
Information………………… 23
The illustrations in this manual are for
explanation purposes only and may differ
from the actual unit. They are subject
to change without notice for future
improvement.
Basic operation
1Press
OFF /ON
to start/stop the operation.
2Press
MODE
to select the desired mode.
DRY
AUTO HEAT
COOL
3Select the desired temperature.
UP
DOWN
Selection range: 16 °C ~ 30 °C / 60 °F ~ 86 °F.
Thank you for purchasing
Panasonic Air Conditioner.

4
Safety precautions
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 authorised dealer or
specialist to clean the internal parts,
repair, install, remove and reinstall
the unit. Improper installation and
handling will cause leakage, electric
shock or fire.
Confirm with authorised dealer or
specialist on usage of any specified
refrigerant type. Using refrigerant
type other than the specified 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 unfit method or using
incompatible material may cause
product damage, burst and serious
injury.
Do not install the unit in a potentially
explosive or flammable atmosphere.
Failure to do so could result in fire.
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
classified 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 classified
by the following symbols:
This symbol denotes an
action that is PROHIBITED.
These symbols denote
actions COMPULSORY.
Air inlet
Air inlet
Air outlet
Air outlet
Remote control
Outdoor unit
Power supply
Indoor unit
Air inlet vent
Air outlet
vent

5
English Safety precautions
Do not insert your fingers
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.
Power supply
Do not use a modified
cord, joint cord,
extension cord or
unspecified cord to
prevent overheating
and fire.
To prevent overheating, fire 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 qualified 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 fire.
To prevent overheating, fire 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/fire/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 fire.
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.

6
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 airflow
outlet to avoid fire propagation.
Do not expose plants or pet directly
to airflow to avoid injury, etc.
Do not touch the sharp
aluminium fin, sharp parts may
cause injury.
Do not switch ON the indoor unit
when waxing the floor. 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 inefficient 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.

7
English Safety precautions
WARNING
This appliance is filled with R32
(mild flammable refrigerant).
If the refrigerant is leaked and
exposed to an external ignition
source, there is a risk of fire.
Indoor unit and outdoor unit
The appliance shall be installed,
and/or operated in a room with floor
area larger than Amin (m²) and
keep away from ignition sources,
such as heat/sparks/open flame
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
flammable 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, flame,
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
flare nuts with the R32 and R410A
piping and flare nuts on the outdoor
unit side.
For R32 and R410A, the same flare
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 certified
personnel in the use of flammable
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 certified.

8
• 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
flames, 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 confirm
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 certified 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 certified personnel are
indicated as below:
a) Knowledge of legislation,
regulations and standards
relating to flammable
refrigerants; and,
b) Detailed knowledge of and
skills in handling flammable
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.
1. Installation (Space)
• Product with flammable
refrigerants, shall not be installed in
an unventilated space, if that space
is smaller than Amin (m²).
• In case of field charge, the effect
on refrigerant charge caused by
the different pipe length has to be
quantified, 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
offices for proper handling.
Safety precautions

9
English
2. Servicing
2-1. Service personnel
• The system is inspected, regularly
supervised and maintained by
a trained and certified service
personnel who is employed by the
person user or party responsible.
• Ensure the actual refrigerant
charge size is in accordance with
the room size within which the
refrigerant containing parts are
installed.
• Ensure refrigerant charge not to
leak.
• Any qualified person who is
involved with working on or
breaking into a refrigerant circuit
should hold a current valid
certificate from an industry-
accredited assessment authority,
which authorizes their competence
to handle refrigerants safely in
accordance with an industry
recognised assessment
specification.
• 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
flammable refrigerants.
• Servicing shall be performed
only as recommended by the
manufacturer.
2-2. Work
• Prior to beginning work on
systems containing flammable
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 flammable
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 confined 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.
• Ensure that the conditions within
the area have been made safe
by limit of use of any flammable
material. Keep all sources of
ignition and hot metal surfaces
away.
Safety precautions

10
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 flammable atmospheres.
• Ensure that the leak detection
equipment being used is suitable
for use with flammable 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
unauthorized personnel out.
2-4. Presence of fire extinguisher
• If any hot work is to be conducted
on the refrigeration equipment or
any associated parts, appropriate
fire extinguishing equipment shall
be available at hand.
• Have a dry powder or CO2fire
extinguisher adjacent to the
charging area.
2-5. No ignition sources
• No person carrying out work in
relation to a refrigeration 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 sufficiently far away from
the site of installation, repairing,
removing and disposal, during
which flammable 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 flammable 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.

11
English
2-7. Checks to the refrigeration
equipment
• Where electrical components are
being changed, they shall be fit
for the purpose and to the correct
specification.
• 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
flammable refrigerants.
- The charge size 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.
- Refrigeration 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.
Safety precautions

12
Safety precautions
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 specification, damage to
seals, incorrect fitting 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 flammable atmospheres.
• Replacement parts shall be in
accordance with the manufacturer’s
specifications.
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
flammable atmosphere.
• The test apparatus shall be at the
correct rating.
• Replace components only with
parts specified by the manufacturer.
Unspecified 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 flammable
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 flame) shall not be
used.

13
English
7. Leak detection methods
The following leak detection
methods are deemed acceptable for
all refrigerant systems.
• No leaks shall be detected when
using detection equipment with a
capability of 10−6Pa·m3/s or better,
for example, a helium sniffer.
• Electronic leak detectors may
be used to detect flammable
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 confirmed.
• Leak detection fluids are suitable
for use with most refrigerants but
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
flames 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.
Oxygen free nitrogen (OFN) shall
then be purged through the system
both before and during the brazing
process.
OFN = oxygen free nitrogen,
type of inert gas.
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 flammability is
a consideration. The following
procedure shall be adhered to:
remove refrigerant -> purge the
circuit with inert gas -> evacuate ->
purge again 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 “flushed” with
OFN to render the unit safe.
• This process may need to be
repeated several times.
• Compressed air or oxygen shall not
be used for this task.
• Flushing 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 final 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 ignition sources and there is
ventilation available.
Safety precautions

14
Safety precautions
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 upright.
- Ensure that the refrigeration
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 refrigeration
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 fire 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 reclaimed
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.
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
manufacturer’s instructions.
h) Do not over fill cylinders. (No
more than 80 % volume liquid
charge).

15
English
i) Do not exceed the maximum
working pressure of the cylinder,
even temporarily.
j) When the cylinders have been
filled 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
refrigeration 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 fire 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 flammable 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
flammable 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 flammable 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 precautions

16
How to use
FAN SPEED
To select fan speed
(Remote control display)
• For AUTO, the indoor fan speed is automatically
adjusted according to the operation mode.
MODE
To select operation mode
AUTO - For your convenience
HEAT - To enjoy warm air
COOL- To enjoy cool air
DRY - To dehumidify the environment
QUIET/
POWERFU
L
To switch between quiet &
powerful
QUIET POWERFUL NORMAL
QUIET: To enjoy quiet operation
• This operation reduces airflow noise.
OFF /ON
TEMP
TIMER/CLOCK
MODE
QUIET/
POWERFUL
FAN SPEED
MODE
CHECK RESET
AIR SWING
OFF/ON
CANCELCLOCK
SET
SELECTUP
DOWN
AC RC
Remote control display
Press and hold
for approximately
10 seconds to show
temperature setting
in °C or °F.
Press to restore the
remote control to
previous setting.
Not used in normal
operations.
Not applicable
POWERFUL: To reach temperature quickly
Single • This operation stops automatically after
20 minutes.
Multi • This operation continues until it is
cancelled by pressing again
QUIET/
POWERFU
L
button or turn OFF the unit to stop this
operation.
Can be activated in all modes and can be
cancelled by pressing the respective button again.
Daily timer setting
To turn ON or OFF the unit at a preset time.
TIMER/CLOCK
CANCELCLOCK
SELECT
MO
D
E
O
FF
/O
N
S
E
T
U
P
D
O
W
N
3
4
1
2
1Press TIMER
MODE
to enter timer mode
• Press once to change the display from clock
to timer or vice-versa.
• Press for 4 seconds to change the display
from daily timer to weekly timer or vice-
versa.
2Select ON or OFF timer Example:
OFF at 22:00
OFF/ON
3Set the time
UP
DOWN
4Confirm
SET
• To cancel, press
CANCE
L
.
• When ON timer is set, the unit may start early
before the actual set time in order to achieve
the desired temperature on time.
• Timer operation is based on the clock set in the
remote control and repeats daily once set.
• The timer closest to the current time will be
activated first.
• If timer is cancelled manually or due to power
failure, you can restore the previous setting by
pressing
SET
.
Single Single split system
Multi Multi split system

17
English How to use
Weekly timer setting
Promotes energy saving by allowing you to set
up to 6 programmes in any given day.
TIMER/CLOCK
CANCELCLOCK
SELECT
MO
D
E
O
FF
/ON
S
E
T
U
P
D
O
W
N
Lights up if Timer operation is selected
Programme number in a
day (1 ~ 6)
Time to be selected
(10 minutes step)
ON Timer
OFF Timer
Day to be selected
Indicates the selected day
Indicates the next timer
operation day
1. Press TIMER
MODE
for 4 seconds to change
display to weekly timer.
2. Press TIMER
UP
or
DOWN
to select your
desired day.
3. Press
SELECT
to confirm your selection.
4. “1” will be blinking, press
SELECT
to set
programme 1.
5. Press TIMER
OFF/ON
to select ON or OFF timer.
6. Press TIMER
UP
or
DOWN
to select your
desired time.
If you want to set the timer together with
your desired temperature, press
TEMP
to
select the temperature.
7. Press
SET
to confirm programme 1. The
selected day will be highlighted with .
• After 2 seconds, the display will move to the
next programme. Repeat steps 4 to 7 to set
programmes 2 to 6.
• During timer setup, if no button is pressed within
30 seconds, or if the
SET
button is pressed, the
setting at that moment is confirmed and timer
setup is ended.
To check current timer programme
1.Press TIMER
MODE
to enter timer mode and
press
SELECT
to enter day setting.
2.Press TIMER
UP
or
DOWN
until your desired day is
shown, press
SELECT
to confirm your selection.
3.Press TIMER
UP
or
DOWN
to check the set
programmes.
To modify current timer programme or
add new timer programme
1.Press TIMER
MODE
to enter timer mode and
press
SELECT
to enter day setting.
2.Press TIMER
UP
or
DOWN
until your desired day is
shown.
3.Perform steps 4 to 7 of “Weekly timer setting”
to modify existing timer programme, or add any
timer programme.
To cancel current timer programme
1.Press
SELECT
to enter day.
2.Press TIMER
UP
or
DOWN
until your desired day is
shown, press
SELECT
to enter programme setting.
3.Press TIMER
UP
or
DOWN
until your desired
programme is shown. Press
CANCE
L
to cancel the
programme and will disappear.
To disable/enable Weekly Timer
• To disable weekly timer setting, press TIMER
MODE
, then press
CANCE
L
.
• To enable previous weekly timer setting, press
TIMER
MODE
, then press
SET
.
Note
• Daily timer and weekly timer could not be set
at the same time.
• Same timer programme cannot be set in the
same day.
To set the timer

18
Operation mode
• It is possible to operate the indoor units individually or simultaneously. The priority of
operation is placed on the first 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 : For your convenience.
Single • Unit selects operation mode every 10 minutes according to the setting and room
temperatures.
Multi • Unit selects operation mode every 3 hours according to setting temperature,
outdoor temperature and room temperature.
HEAT : Unit takes a while to warm up.
COOL : Provides efficient comfort cooling to suit your needs.
DRY : Unit operates at low fan speed to give a gentle cooling operation.
Energy saving temperature setting
Operating the unit within the recommended temperature range may save energy.
HEAT : 20 °C ~ 24 °C / 68 °F ~ 75 °F.
COOL: 26 °C ~ 28 °C / 79 °F ~ 82 °F.
Operating conditions
Use this air conditioner under the following temperature range.
Temperature °C (°F) Indoor unit Outdoor unit
DBT WBT DBT WBT
COOL Max. 32 (89.6) 23 (73.4) 46 (114.8) 26 (78.8)
Min. 16 (60.8) 11 (51.8) -10 (14.0) -
HEAT Max. 30 (86.0) - 24 (75.2) 18 (64.4)
Min. 16 (60.8) - -15 (5.0) -16 (3.2)
DBT: Dry bulb temperature, WBT: Wet bulb temperature
To learn more... Single Single split system
Multi Multi split system

19
English
To ensure optimal performance of the unit, cleaning has to be carried out at regular
intervals. Dirty unit may cause malfunction. Please consult authorised dealer.
• Switch off the power supply and unplug before cleaning.
• Do not touch the aluminium fin, sharp parts may cause injury.
• Do not use benzine, thinner or scouring powder.
• Use only soap ( pH 7) or neutral household detergent.
• Do not use water hotter than 40 °C / 104 °F.
Indoor unit
Air outlet side duct flange (rear)
Electrical
box
Water drain
Air filter
Air intake side duct flange
Air Filter
• The air filter is located in the air intake side
of the unit.
• For cleaning the air filter, please consult
your dealer. Do not attempt to clean inside
the unit by yourself.
• If the air filter gets blocked, the efficiency of
the air conditioner drops significantly.
Outdoor unit
Clear debris that surround the
unit.
Clear any blockage from the
drain pipe.
Cleaning instructions
To learn more... / Cleaning instructions

20
Troubleshooting
The following symptoms do not indicate malfunction.
Symptom Cause
Operation LED blinks during operation and
the indoor fan is stopped.
• The unit is in defrost mode, and the melted frost is
drained from the outdoor unit.
TIMER indicator is always on. • The timer setting repeats daily once set.
Operation is delayed a few minutes after
restarting.
• The delay is a protection to the unit’s compressor.
Indoor fan stops occasionally during heating
operation.
• To avoid unintended cooling effect.
Indoor fan stops occasionally during automatic
fan speed setting.
• This helps to remove the surrounding odour.
Airflow continues even after operation has
stopped.
• Extraction of 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 of temperature caused the expansion/
contraction of the unit.
Water flowing sound during operation. • Refrigerant flow inside the unit.
Mist emerges from indoor unit. • Condensation effect due to cooling process.
Outdoor unit emits water/steam. • Condensation or evaporation occurs on pipes.
Discoloration of some plastic parts. • Discoloration is subject to material types used in plastic
parts, accelerated when exposed to heat, sun light, UV
light or environmental factor.
Check the following before calling for servicing.
Symptom Check
Operation in HEAT/COOL mode is not working
efficiently.
• Set the temperature correctly.
• Close all doors and windows.
•
Clear any obstruction at the air inlet and air outlet vents.
Noisy during operation. • Check if the unit has been installed at an incline.
The unit does not work. • Check if the circuit breaker is tripped.
• Check if timers have been set.
The following symptoms indicate malfunction.
Symptom Check
At remote control, OFF indicator does not
shown on remote control display but operation
LED OFF.
• Use remote control to retrieve error code as follows.
OFF /ON
TEMP
TIMER/CLOCK
MODE
QUIET/
POWERFUL
FAN SPEED
MODE
CHECK RESET
AIR SWING
OFF/ON
CANCELCLOCK
SET
SELECTUP
DOWN
AC RC
OFF Indicator
Operation LED
3
/
12
Ensure the operation LED is in OFF condition.
1Press
CHECK
for 5 seconds
2Press TIMER
UP
or
DOWN
• If error code and abnormality can be identified, the
operation LED will be ON continuously, then jot
down the error code.
3Press
CHECK
again for 5 seconds to quit checking
4Reveal the error code to authorised dealer