Panasonic Air Conditioner CS-E18NKUA, CU-E18NKUA, CS-E24NKUA, CU-E24NKUA Operating Instructions

							QUICK GUIDEQUICK GUIDE
ENGLISH
Before operating the unit, read these operating 
instructions thoroughly and keep them for future 
reference.
F568726
© Panasonic Appliances Air-Conditioning Malaysia 
Sdn. Bhd. 2012. Unauthorized copying and distribution 
is a violation of law.
Operating Instructions
Air Conditioner
 Model No.
 Indoor Unit  Outdoor Unit 
 
 CS-E18NKUA  CU-E18NKUA
 CS-E24NKUA  CU-E24NKUA 
						

							2
Thank you for purchasing
Panasonic Air  Conditioner
NOTENOTE
The illustrations in this manual are for 
explanation purposes only and may 
differ from the actual unit. They are 
subjected to change without notice for 
future improvement.
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:
  WARNINGWARNINGThis sign warns of death or serious injury.
  CAUTIONCAUTION 
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 an 
actions that is COMPULSORY.
 WARNINGWARNING
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 authorized 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 fi re.
Confi rm to authorized dealer or specialist on usage of specifi ed 
refrigerant type. Using of refrigerant other than the specifi ed type 
may cause product damage, burst and injury etc.
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.
Air InletAir Inlet
Air OutletAir Outlet
Air OutletAir Outlet
Air InletAir Inlet
Outdoor 
Unit
Power
Supply
Remote
Control
OPERATION CONDITIONOPERATION CONDITION
Use this air conditioner under the following 
temperature range
Temperature (°F)Indoor
*DBT *WBT
COOLINGMax. 89.6 73.4
Min. 60.8 51.8
HEATINGMax. 86.0 -
Min. 60.8 -
Temperature (°F)Outdoor
*DBT *WBT
COOLINGMax. 109.4 78.8
Min. 0.0 -
HEATINGMax. 75.2 64.4
Min. 5.0 3.2
* DBT:  Dry bulb temperature
* WBT:  Wet bulb temperature 
POWER SUPPLYPOWER SUPPLY
Models NumberTime Delay 
Circuit BreakerRated 
Volts
CS/CU-E18NKUA 20 Amps
208/
230V
CS/CU-E24NKUA 25 Amps
Indoor Unit
TABLE OF CONTENTSTABLE OF CONTENTS
SAFETY PRECAUTIONS
2~3
REMOTE CONTROL
4~5
INDOOR UNIT
6
TROUBLESHOOTING
7
INFORMATION
8
QUICK GUIDE
BACK COVER 
						

							3
 CAUTIONCAUTION
INDOOR UNIT AND OUTDOOR UNIT
Do not wash the indoor unit with water, benzene, 
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
COOL/DRY mode operation.
Ensure drainage pipe is connected properly and 
keep drainage outlet clear of gutters, containers 
or does not immersed in water to prevent water 
leakage.
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. 
 WARNINGWARNING
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 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.
If the supply cord is damage, it must be replaced 
by the manufacturer, its service agent or similarly 
qualifi ed persons in order to avoid a hazard.
It is strongly recommended to install this unit 
using an Earth Leakage Circuit Breaker (ELCB) 
or Ground Fault Interrupt (GFCI) or Appliance 
Leakage Current Interrupt (ALCI) to prevent electric 
shock or fi re.
Stop using the product if any abnormality/failure 
occurs or turn off the power switch and breaker.
(Risk of smoke/fi re/electric shock)
Examples of abnormality/failure
•  The ELCB or GFCI or ALCI trip frequently.  
•  Burning smell is observed.
•  Abnormal noise or vibration of the unit is 
observed.
•  Water leaks from the indoor unit. 
•  Power cord 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 or repair assistance.
This equipment must be earthed to prevent 
electrical shock or fi re.
Prevent electric shock by switching off the power:
- Before cleaning or servicing.
- Extended non-use.
- Abnormally strong lightning activity. 
						

							4
AUTO
HEAT
COOL
DRY
FAN SPEEDMODE
QUI
ET
TEM
P
OFF/ON
POWERF
UL
TIMER
SET
CANCEL ON
OFF1
23
SETCHECKCLOCK
RESET AC
RC
AIR SWING
FAN
SPEED
AIR
SWING
REMOTE CONTROL
Maximum distance: 26ft
INDICATOR
 
POWER(Green)
 TIMER(Orange)
 QUIET(Orange)
 POWERFUL(Orange)
342 Remote 
Control display
6
1
5
7
Press the remote control’s button
1
TO TURN ON OR OFF THE UNIT
•  Please be aware of the OFF indication on the remote 
control display to prevent the unit from starting/stopping 
improperly.
2
 TO SET TEMPERATURE
•  Selection range : 60°F ~ 86°F.
•  Operating the unit within the recommended temperature 
could induce energy saving.
HEAT mode : 68°F ~ 75°F.
COOL mode : 78°F ~ 82°F.
DRY mode : 2°F ~ 4°F lower than room temperature.
3
TO SELECT OPERATION MODE
AUTO mode - For your convenience
•  During operation mode selection the power indicator 
blinks.
•  Unit selects operation mode every 10 minutes according 
to temperature setting and room temperature.
HEAT mode - To enjoy warm air
•  Unit takes a while to warm up. The power indicator blinks 
during this operation.
COOL mode - To enjoy cool air
•  Use curtains to screen off sunlight and outdoor heat to 
reduce power consumption during cool mode.
DRY mode - To dehumidify the environment
•  Unit operates at low fan speed to give a gentle cooling 
operation.
4
TO SELECT FAN SPEED (5 OPTIONS)
FAN SPEED
•  For AUTO, the indoor fan speed is automatically adjusted 
according to the operation mode.
5
TO ADJUST AIRFLOW DIRECTION (5 OPTIONS)
AIR SWING
•  Keeps the room ventilated.
•  In COOL/DRY mode, if AUTO is set, the louver swing 
left/right and up/down automatically.
•  In HEAT mode, if AUTO is set, the horizontal louver fi x at 
predetermined position. The vertical louver swing left/right 
after the temperature rises.
6
TO ENJOY QUIET OPERATION
•  This operation reduces airfl ow noise.
8
9
12
1011 
						

							5
TO SET THE TIMERTO SET THE TIMER
•  To turn ON or OFF the unit at a preset time.
ON
OFF1
2SET
Select ON or 
OFF timerSet the time Confi rm
•  To cancel ON or OFF timer, press 
ON or OFF then 
press 
CANCEL.
•  When ON Timer is set, the unit may start earlier (up 
to 35 minutes) 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. For clock 
setting, please refer to Remote Control Preparation 
on the back cover.
•  If timer is cancelled manually or due to power failure, 
you can restore the previous setting (once power is 
resumed) by pressing 
SET.
7TO REACH TEMPERATURE
QUICKLY
•  This operation stops automatically after 20 minutes.
8Press and hold for 5 seconds to dim or restore the 
unit’s indicator brightness.
9Press and hold for approximately 10 seconds to 
show temperature setting in °C or °F.
10Press and hold for approximately 5 seconds to show 
12-hour (am/pm) or 24-hour time indication.
11
Press to restore the remote control’s default setting.
12
Not used in normal operations.
NOTESNOTES
QUIET
 , 
POWERFUL
•  Can be activated in all modes and can be cancelled by 
pressing the respective button again.
QUIET
 , 
POWERFUL
•  Cannot be selected at the same time. 
						

							6
CAUTION• Switch off  the power at the circuit breaker before cleaning.
• Do not touch the aluminium fi n, sharp parts may cause injur y.
CLEANING  INSTRUCTIONSCLEANING  INSTRUCTIONSHINTHINT
•  Do not use benzene, thinner or scouring powder.
•  Use only soap ( pH7) or neutral household detergent.
•  Do not use water hotter than 104°F.•  To ensure optimal performance of the unit, cleaning 
maintenance has to be carried out at regular intervals. 
Dirty unit may cause malfunction and you may see error 
code “H99”. Please consult authorized dealer.
INDOOR UNIT
2
5
6
7
14
3
98
1
INDOOR UNIT
•  Wipe the unit gently with a soft, dry cloth.
2
FRONT PANEL
Remove Front Panel
•  Raise and pull to remove the front panel.
•  Wash gently and dry.
Close Front Panel
•  Press down both ends of the front panel to close it securely.
3
REMOTE CONTROL RECEIVER
4
ALUMINIUM FIN
5
HORIZONTAL AIRFLOW DIRECTION LOUVER
•  Do not adjust by hand.
6
VERTICAL AIRFLOW DIRECTION LOUVER
•  Do not adjust by hand.
7
AUTO OFF/ON BUTTON
•  Use when remote control is misplaced or a malfunction occurs.
Step Action Mode
1 Press once. Automatic
2Press and hold until you hear one 
beep, then release.Force cooling
3Repeat step 2. Press and hold 
until you hear two beeps, then 
release.Normal cooling
4Repeat step 3. Press and hold 
until you hear three beeps, then 
release.Force heating
Press the button to turn off.
8
AIR PURIFYING FILTER
Vacuum the air purifying fi lter.
•  It is recommended to clean the fi lter every 6 months.
• Replace the fi lter every 3 years or replace any damaged fi lter.
Part no.: CZ-SA20P
9
AIR FILTERS
• Air fi lter cleaning is required every two weeks.
• Wash/rinse the fi lters gently with water to avoid damage to the 
fi lter surface.
• Dry the fi lters thoroughly under shade, away from fi re or direct 
sunlight.
•  Replace any damaged fi lters. 
						

							7
The unit stops and the TIMER indicator blinks.
Use remote control to retrieve error code.
TIMER
SET
CANCEL ON
OFF1
23
SET CHECK CLOCK RESETAC
RC
1Press for 5 
seconds.
3Press for 5 
seconds to 
quit checking.
2Press until you hear 
beep sound, then 
write down the error 
code.Note:
•  For certain errors, you 
may restart the unit for 
limited operation with 4 
beeps when operation 
starts.
4  Turn the unit off and reveal the error code to authorized dealer.
TROUBLESHOOTING
The following symptoms do not indicate malfunction.The following symptoms do not indicate malfunction.
SYMPTOMSYMPTOMCAUSECAUSE
Mist emerges from indoor unit.►•  Condensation effect due to cooling process.
Water fl owing sound during operation.►• Refrigerant fl ow inside the unit.
The room has a peculiar odor.►•  This may be due to damp smell emitted by the wall, 
carpet, furniture or clothing.
Indoor fan stops occasionally during automatic fan speed 
setting.►•  This helps to remove the surrounding odours.
Airfl ow continues even after operation has stopped.►•  Extraction of remaining heat from the indoor unit 
(maximum 30 seconds).
Operation is delayed a few minutes after restarting.►•  The delay is a protection to the unit’s compressor.
Outdoor unit emits water/steam.►•  Condensation or evaporation occurs on pipes.
TIMER indicator is always on.►•  The timer setting repeats daily once set.
POWER indicator blinks during HEAT mode with no warm 
air supply (and louver is closed).►•  The unit is in defrost mode (and AIR SWING is set to 
AUTO).
Indoor fan stops occasionally during heating operation.►•  To avoid unintended cooling effect.
Power indicator blinks before the unit is switched on.►•  This is a preliminary step in preparation for the operation 
when the ON timer has been set.
Cracking sound during operation. ►•  Changes of temperature caused the expansion/
contraction of the unit.
Check the following before calling for servicing.Check the following before calling for ser vicing.
SYMPTOMSYMPTOMCHECKCHECK
Heating/Cooling operation 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 signal 
transmitter. Please consult authorized dealer. 
						

							8
INFORMATION
FOR SEASONAL INSPECTION AFTER EXTENDED NON-USE
•  Check remote control batteries.
•  No obstruction at air inlet and air outlet vents.
•  Use Auto OFF/ON button to select Cooling/Heating operation. 
After 15 minutes of operation, it is normal to have the following 
temperature difference between air inlet and air outlet vents: 
Cooling: ≥ 14.4°F  Heating: ≥ 25.2°F
FOR EXTENDED NON-USE
•  Activate Heat mode for 2~3 hours as an alternative to remove 
moisture left in the internal parts thoroughly to prevent mould 
growth.
•  Switch off power at the circuit breaker.
•  Remove the remote control batteries.NON SERVICEABLE CRITERIAS
SWITCH OFF POWER AT THE CIRCUIT 
BREAKER then please consult an authorized 
dealer under the following conditions:
•  Abnormal noise during operation.
•  Water/foreign particles have entered the remote 
control.
•  Water leaks from Indoor unit.
•  Circuit breaker switches off frequently.
•  Switches or buttons are not functioning properly.
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.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. 
Pb
Contact your local hazardous waste disposal hotline.
Federal Communications Commission Interference Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device 
may not cause harmful interference, and (2) this device must accept any interference received, including interference that 
may cause undesired operation. 
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of 
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential 
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in 
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee 
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or 
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct 
the interference by one or more of the following measures:
•  Reorient or relocate the receiving antenna.
•  Increase the separation between the equipment and the receiver.
•  Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
•  Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: To assure continued compliance, follow the attached installation instructions. Any changes or modifi cations 
not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
Industry Canada Notice
This Class B digital apparatus complies with Canadian ICES-003.
Models NumberCS-E18NKUA / CU-E18NKUA only. 
The above listed models have been designed and manufactured to meet ENERGY STAR® criteria for 
energy effi ciency when matched with appropriate coil components. However, proper refrigerant charge 
and proper air fl ow are critical to achieve rated capacity and effi ciency. Installation of this product should 
follow the manufacturer’s refrigerant charging and airfl ow instructions. Failure to confi rm proper charge and 
airfl ow may reduce energy effi ciency and shorten equipment life. 
						

							MEMO 
						

							MEMO