USER MANUAL CS-E12SKEW PANASONIC
Operating Instructions
Air Conditioner
Model No.
Indoor Unit
CS-E7SKEW
CS-E9SKEW
CS-E12SKEW
CS-E15SKEW
CS-E18SKEW
CS-E7SKEW-M
CS-E9SKEW-M
CS-E12SKEW-M
CS-E15SKEW-M
CS-E18SKEW-M
CS-XE7SKEW
CS-XE9SKEW
CS-XE12SKEW
CS-XE18SKEW
Outdoor Unit
Single Split
CU-E7SKE
CU-E9SKE
CU-E12SKE
CU-E15SKE
CU-E18SKE
Multi Split
CU-3E18PBE
CU-4E23PBE
CU-4E27PBE
CU-5E34PBE
CU-2E12SBE
CU-2E15SBE
CU-2E18SBE
CU-3E23SBE
Operating Instructions
Air Conditioner
2-11
Thank you for purchasing Panasonic Air Conditioner.
Installation instructions attached.
Before operating the unit, please read these operating instructions thoroughly and keep them for future reference.
Provide maximum comfort, clean air and optimise energy saving
ECONAVI + INVERTER The Perfect Energy Saving Technology
ECONAVI detects where energy is normally wasted and adjusts cooling/heating power depending on room conditions and activity levels. Then, INVERTER leverages ECONAVI sensor data and varies compressor rotation speed. This helps to optimize cooling/heating operation and reduces wasteful cooling/heating.
See "To learn more..." for details.
nanoe For a freshness and cleaner environment
nanoe generates negative ions using the air in the room to give a healthy air.
It also provides moisturizing effect on the skin or hair and reduces the smell in the room and constrains propagations of mold and bacteria.
Multi air conditioner system
Multi air conditioner systems save space by letting you connect multiple indoor units to a single outdoor unit.
- For complete product features, please refer catalogue.
Indoor units
- 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 a different operation mode.
- For system which HEAT mode has been locked, if operation mode other than HEAT is selected, the indoor unit stops and the POWER indicator blinks.
Outdoor unit
(CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE)
Quick guide
Inserting the batteries
① Pull out the back cover of remote control ② Insert AAA or R03 batteries (can be used \~ 1 year) ③ Close the cover
Clock setting
① Press CLOCK ② Set the time ③ Confirm
Basic operation
![graph LR A["① Select the desired mode"] --> B["AUTO"] B --> C["HEAT"] C --> D["DRY"] D --> E["COOL"] E --> F["Feedback to DRY"]](/content/2019/08/105647/images/0120d113b4a5367cd47847b0cfb988bb85e010c9fbe749d67b4a419070a3b760.jpg)
② Start/stop the operation
- Please note that the OFF indication is on display to start the unit.
③ Select the desired temperature
- Selection range: 16°C ~ 30°C.
- Operating the unit within the recommended temperature range may save energy. HEAT: 20 °C ~ 24 °C. COOL: 26 °C ~ 28 °C. DRY: 1 °C ~ 2 °C lower than room temperature.
- To dim or restore the unit's indicator brightness, press and hold for 5 seconds.
- Use remote control within 8 m from the remote control receiver of the indoor unit.
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.
Table of contents
Safety precautions....4-5
How to use......6-7
To learn more... 8-9
Cleaning instructions .... 10
Troubleshooting 11
Information......62
Accessories
- Remote control
- AAA or R03 batteries × 2
- Remote control holder
- Screws for remote control holder × 2
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 appliance is not intended for use 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.
![graph TD A["Air inlet"] --> B["Air outlet"] B --> C["Outdoor unit"] C --> D["Air outlet"] D --> E["Power supply"] E --> F["Air inlet"] G["Indoor unit"] --> B H["Remote control"] --> B I["Outdoor unit"] --> D](/content/2019/08/105647/images/612e38c046f71b11fe0c865fbe0a3b7fb1c2f453d285aa38477f4f4e721b7c1d.jpg)
WARNING
Indoor unit and outdoor unit
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
Please consult an 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 fire.
Confirm with an authorized dealer or specialist on usage of any specified refrigerant type. Using a refrigerant type other than the specified may cause product damage, burst, and injury, etc.
Do not install the unit in a potentially explosive or flammable atmosphere. Failure to do so could result in fire.
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 excessive 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.
CAUTION
Indoor unit and outdoor unit
Do not wash the indoor unit with water, benzine, thinner, or scouring powder to avoid damage or corrosion to the unit.
Do not use the unit for preservation of precision 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 pets directly to airflow to avoid injury, etc.
Do not touch the sharp aluminum 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 purposes 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 windows or doors for long time during COOL/DRY mode operation.
Prevent water leakage by ensuring the 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.
To optimise energy saving
ECONAVI
To select operation mode
AUTO - For your convenience
HEAT - To enjoy warm air
COOL - To enjoy cool air
DRY - To dehumidify the environment
To maximise comfort while sleeping
SLEEP → 0.5h → 1.0h → 2.0h → 3.0h → 4.0h → 5.0h
0.0h (CANCEL) ← 9.0h ← 8.0h ← 7.0h ← 6.0h
- 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 single timer or twin timer. Sleep operation has the priority over OFF timer.
- This operation can be cancelled by pressing the respective button when the sleep timer reaches 0.0h.
To switch between powerful & quiet
(Remote control display)
![graph LR A["POWERFUL"] --> B["QUIET"] B --> C["(NORMAL)"]](/content/2019/08/105647/images/3fa235cda1ff45b6281b562b57dc70965ace8216d9f29e545a186c8872fac80c.jpg)
POWERFUL: To reach temperature quickly
- This operation stops automatically after 20 minutes.
QUIET: To enjoy quiet operation
This operation reduces airflow noise.
Remote control display
To select fan speed
(Remote control display)
For AUTO, the indoor fan speed is automatically adjusted according to the operation mode.
Use when remote control is misplaced or a malfunction occurs. Raise the front panel:
- Press the button once to use in AUTO mode.
- Press and hold the button until you hear 1 beep, then release to use in forced COOL mode.
- Repeat step 2. Press and hold the button until you hear 2 beeps, then release to use in forced HEAT mode.
- Press the button again to turn off.
nanoe
To enjoy freshness and cleaner environment
nanoe
This operation moisturizes your skin and hair, reduces odor and inactivation of allergic particulars such as pollen in the room.
MILD DRY
To improve humidity and moisture level
Single
- This operation reduces air dryness and provides you with a comfortable living environment during COOL mode only.
- When vertical airflow direction is set to AUTO, it stops at lower position to avoid cold air contact. However, you can adjust the louver direction manually. • Function not applicable.
Multi
Multi
AIR SWING
To adjust airflow direction
(Remote control display)
![graph TD A["Input"] --> B["Auto"] B --> C{Condition} C -->|Yes| D["Output 1"] C -->|No| E["Output 2"] D --> F["Branch 1"] E --> G["Branch 2"] F --> H["Output 3"] G --> I["Output 4"]](/content/2019/08/105647/images/c5522a70138d4a2d226785384bf55b3f26a07a4cc5f0180ff7320857c3e26b35.jpg)
- Keeps the room ventilated.
- In COOL/DRY mode, if AUTO is set, the louver swings left/right and up/down automatically.
- In HEAT mode, if AUTO is set, the horizontal louver is fixed at the predetermined position. The vertical louver swings left/right after the temperature rises.
- Do not adjust the louver by hand.
Auto Restart Control
- If power is resumed after a power failure, the operation will restart automatically after a period of time with previous operation mode and airflow direction.
- This control is not applicable when TIMER is set.
To set the timer
2 sets of ON and OFF timers are available to turn ON or OFF the unit at different preset times.
![graph TD A["① ON"] --> B["② ∧"] B --> C["③ SET"] C --> D["✓"] D --> E["OFF"] E --> F["CANCEL"]](/content/2019/08/105647/images/cb87cbd05e5d0f416bf3b6f6f9043e0f2c681818999c205233819967f60269e5.jpg)
① Select ON or OFF timer
• Each time pressed:
② Set the time
③ Confirm
Example:
OFF at 22:00
OFF
^
↓
SET
- To cancel ON or OFF timer, press ON or OFF to select respective ⏻1 or ⏻2 then press CANCEL.
- If the timer is cancelled manually or due to a power failure, you can restore it by pressing ON or OFF to select the respective ⏻1 or ⏻2, then press SET.
- The nearest timer setting will be displayed and will activate in sequence.
- When the 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 the Quick Guide.
Note
ECONAVI
POWERFUL/QUIET
nanoe
SLEEP
- Can be activated in all modes and can be cancelled by pressing the respective button again.
ECONAVI
POWERFUL/QUIET
- Cannot be selected at the same time.
- Cannot be activated during MILD DRY.
Operation mode
AUTO: During operation mode selection, the POWER indicator blinks.
Single
Unit selects operation mode every 10 minutes according to setting temperature and room temperature.
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. The POWER indicator blinks during this operation.
COOL: Use curtains to screen off sunlight and outdoor heat to reduce power consumption during COOL mode.
DRY: Unit operates at low fan speed to give a gentle cooling operation.
For systems where HEAT mode has been locked, if an operation mode other than HEAT is selected, the indoor unit stops and the POWER indicator blinks.
ECONAVI
ECONAVI
The unit will start to initialize (for approximately 1 minute).
The human activity sensor and the sunlight sensor will start to detect.
Note
AIR SWING
When manual AIR SWING is selected, the ECONAVI operations will be cancelled.
Human activity sensor operation
ECONAVI: Detecting human presence and activity, the unit controls room temperature to save energy.
ECONAVI
Precise control of temperature during low activity to maximise energy saving.
![graph TD A["COOL/DRY"] --> B["Set temperature"] B --> C["Low activity"]](/content/2019/08/105647/images/75498c5f4447c23f36528a26f51ee34bee9de8cafc154b4b212ff2701a0a36b4.jpg)
ECONAVI takes advantage of the human nature that human beings take time to feel the temperature rise during low activity level; the unit adjusts temperature to maximise energy saving without sacrificing comfort.
Sunlight Sensor operation
ECONAVI: Detecting sunlight intensity, the unit adjusts temperature to save energy.
When ECONAVI is activated, the unit maintains set temperature until a high sunlight intensity is detected. The sunlight sensor detects sunlight intensity during weather or day/night changes, and the unit adjusts temperature.
- In a room without window or with thick curtain, the sunlight sensor will judge as cloudy/night.
The human activity sensor will also scan for area of heat source and movement in a room.
Detection area
- Based on area activeness, horizontal airflow direction louver will adjust either fix at predetermined position or swing left/right periodically.
- The human activity sensor performance is influenced by indoor unit location, movement speed, temperature range, etc. • The human activity sensor may:
- mistakenly detect an object with heat source & movement similar to human, such as pets, etc.
- mistakenly detect as non-heat source & movement if a human stays motionless for certain period of time.
- Do not place large objects near the sensor and keep away heating units or humidifier from the sensor's detection area. They may cause sensor malfunction.
Operation conditions
Use this air conditioner under the following temperature range.
DBT: Dry bulb temperature / WBT: Wet bulb temperature
Single split outdoor unit
| CU-E7SKE, CU-E9SKE, CU-E12SKE, CU-E15SKE, CU-E18SKE | Indoor | Outdoor |
| DBT | WBT | DBT | WBT |
| COOL | Max. | 32 | 23 | 43 | 26 |
| Min. | 16 | 11 | -10 | - |
| HEAT | Max. | 30 | - | 24 | 18 |
| Min. | 16 | - | -15 | -16 |
°C (temperature)
Multi split outdoor unit
| CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE | Indoor | Outdoor |
| DBT | WBT | DBT | WBT |
| COOL | Max. | 32 | 23 | 46 | 26 |
| Min. | 16 | 11 | -10 | - |
| HEAT | Max. | 30 | - | 24 | 18 |
| Min. | 16 | - | -15 | -16 |
°C (temperature)
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.
Indoor unit
Wipe the unit gently with a soft, dry cloth.
Human activity sensor
Do not hit or violently press or poke it with a sharp object. This can lead to damage and malfunction.
Front panel
Wash gently and dry.
Remove the front panel
Close it securely
③ Close down. ④ Press both ends and center of the front panel.
Indoor unit
Air filters
Once every 2 weeks
- Wash/rinse the filters gently with water to avoid damage to the filter surface.
- Replace any damaged filters.
Dry the filters thoroughly under shade, away from fire or direct sunlight.
Remove air filter
Attach air filter
Insert into the unit
For seasonal inspection after extended non-use
- Checking of remote control batteries.
- No obstruction at air inlet and air outlet vents.
- Use Auto OFF/ON button to select COOL/HEAT operation. After 15 minutes of operation, it is normal to have the following temperature difference between air inlet and air outlet vents:
COOL: ≥ 8 °C HEAT: ≥ 14 °C
For extended non-use
- Activate HEAT mode for 2~3 hours to remove moisture left in the internal parts thoroughly to prevent mould growth.
- Turn off the power supply and unplug.
- Remove the remote control batteries.
The following symptoms do not indicate malfunction.
| Symptom | Cause |
| Mist emerges from indoor unit. | Condensation effect due to cooling process. |
| Water flowing sound during operation. | Refrigerant flow inside the unit. |
| The room has a peculiar odour. | 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 odour. |
| Airflow 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. |
| Splashing sound during operation. | Generating the nanoe on the unit. |
| Dusts accumulated on the wall. | Due to air circulation or static electricity generated by the air conditioner. Some types of wall paper may collect dustseasily (recommended to clean the area around the air conditioner frequently). |
| During COOL/DRY mode, the indoor unit stops and POWER indicator blinks. | The system has locked to operate in HEAT model only. |
| 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.Clean or replace the filters.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 fluorescent lights may interfere with signal transmitter.Please consult authorised dealer. |
NON-SERVICEABLE CRITERIA
TURN OFF POWER SUPPLY AND
UNPLUG, 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 the indoor unit.
- Circuit breaker switches off frequently.
- Power cord becomes unnaturally warm.
- Switches or buttons are not functioning properly.
The unit stops and the TIMER indicator blinks.
Use the remote control to retrieve the error code.
- For certain errors, you may restart the unit for limited operation with 4 beeps when operation starts.
(CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE)
Quick Guide
Battery Insertion
(CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE)
Quick guide
POWERFUL: To reach temperature quickly
(CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE)
Quick guide
Setting the clock
Hook into the unit
(CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE)
Quick guide
Insert into the unit
Free-multi system
(CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE)
Quick guide
Simple operation
![graph TD A["Selecteer de gewenste stand"] --> B["AUTO"] B --> C["HEAT"] C --> D["DRY"] D --> E["COOL"]](/content/2019/08/105647/images/b54726c17e59be30087bcc4d93c732fa473c4b7c5c64f1487efddc49666bebf0.jpg)
Attach the air filter
These symbols on the products, packaging, and/or accompanying documents mean that used electrical and electronic products and batteries should not be mixed with general household waste.
For proper treatment, recovery and recycling of old products and used batteries, please take them to applicable collection points, in accordance with your national legislation and the Directives 2002/96/EC and 2006/66/EC.
By disposing of these products and batteries correctly, you will help to save valuable resources and prevent any potential negative effects on human health and the environment which could otherwise arise from inappropriate waste handling.
For more information about collection and recycling of old products and batteries, please contact your local municipality, your waste disposal service or the point of sale where you purchased the items.
Penalties may be applicable for incorrect disposal of this waste, in accordance with national legislation.
For business users in the European Union
If you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further information.
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.
This air conditioner incorporates a biocidal product.
Ionized air generated by a device incorporated in the air conditioner deactivates bacteria and viruses in the air, and on surfaces, and inhibits mould growth on surfaces.
Active substances: hydroxyl radicals generated from ambient air
© Panasonic Corporation 2015
Printed in Malaysia
Authorised representative in EU
Panasonic Testing Centre
Panasonic Marketing Europe GmbH
Winsbergring 15, 22525 Hamburg, Germany
