|S01||Room temperature sensor failure|
|S02||Indoor coil sensor failure|
|S03||Humidity sensor failure|
|S04||Comp. temperature sensor failure|
|S05||Outdoor coil sensor failure|
|S06||Outdoor air sensor failure|
|S07||Outdoor current sensor failure|
|E01||Indoor/outdoor communication failure|
|E02||HIC circuit failure (Compressor/Fan circuit)|
|E03||Outdoor unit OTP rom failure|
|E04||Peak current cut off|
|E04||PAM or Active circuit failure|
|E05||High compressor discharge temperature|
|E06||Indoor fan operating failure|
|E07||Way valve switching failure (RV)|
|E08||No refrigerant protection|
|E09||DC compressor drive circuit failure|
|E10||Outdoor fan operating failure|
|E11||Error in outdoor unit|
Panasonic Air Conditioner Troubleshooting
The following symptoms do not indicate malfunction;
Symptom: Mist emerges from indoor unit.
Cause: Condensation effect due to cooling process
Symptom: Water fl owing sound during operation.
Cause: Refrigerant fl ow inside the unit.
Symptom: The room has a peculiar odour
Cause: This may be due to damp smell emitted by the wall, carpet, furniture or clothing
Symptom: Indoor fan stops occasionally during automatic fan speed setting.
Cause: This helps to remove the surrounding odour
Symptom: Airflow continues even after operation has stopped
Cause: Extraction of remaining heat from the indoor unit (maximum 30 seconds).
Symptom: Operation is delayed a few minutes after restarting
Cause: The delay is a protection to the unit’s compressor.
Symptom: Outdoor unit emits water/steam
Cause: Condensation or evaporation occurs on pipes
Symptom: POWER indicator blinks during HEAT mode with no warm air supply (and louver is closed)
Cause: The unit is in defrost mode (and AIR SWING is set to AUTO).
Symptom: Indoor fan stops occasionally during heating operation.
Cause: To avoid unintended cooling effect
Symptom: POWER indicator blinks before the unit is switched on.
Cause: This is a preliminary step in preparation for the operation when the ON timer has been set
Symptom: Cracking sound during operation
Cause: Changes of temperature caused the expansion/contraction of the unit
Symptom: POWER indicator blinks 3 seconds ON and 0.5 seconds OFF during operation
Cause: The unit is in Demand Response Mode
Check: the following before calling for servicing
Symptom: Operation in HEAT/COOL mode is not working efficiently
- 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
Symptom: Noisy during operation
- Check if the unit has been installed at an incline
- Close the front panel properly
Symptom: Remote control does not work
- Insert the batteries correctly
- Replace weak batteries
Symptom: The unit does not work
- Check if the circuit breaker is tripped.
- Check if timers have been set
Symptom: 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 authorised dealer