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TROUBLESHOOTING
WARNING
●
The use of portable telephones near the air conditioner may cause disturbance to its normal operation and must
be avoided. In case abnormal operation is noticed, (OPERATION lamp lights, but the air conditioner will not run) to restore
normal operation turn-off electric supply for about 3 minutes, by disconnecting the main switch or the wall plug, then
start again the air conditioner.
If your air conditioner does not work properly, first check the following points before requesting service.
If it still does not work properly, contact your dealer or service centre.
Trouble: the air conditioner does not run at all.
Possible cause:
1. Power failure.
2. Leakage breaker tripped.
3. Operation button is OFF.
4. Batteries in remote control unit have run down.
Remedy:
1. Restore power.
2. Contact service centre.
3. Press the button again.
4. Replace batteries.
Trouble: Poor cooling or heating performance.
Possible cause:
1. Dirty or clogged air filters.
2. Heat source or many people in room.
3. Doors and/or windows are open.
4. Obstacle near air intake or air discharge port.
5. The set temperature on the remote control unit is too high.
6. Outdoor temperature is too low (heat pump version).
7. Defrosting system does not work (heat pump version).
Remedy:
1. Clean air filters to improve airflow.
2. Eliminate heat source if possible.
3. Shut them to keep the heat or cold out.
4. Remove it to ensure good airflow.
5. Set the right temperature on the remote control unit.
6. Try to use a back-up heater.
7. Consult your dealer.
Trouble: Clicking sound is heard from the air conditioner.
Possible cause:
1. During operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking
sound may occur.
Remedy:
1. This is normal, and the sound will disappear when an even temperature is settled.
AUTO-DIAGNOSIS
LEDS
STANDBY OPERATION
F
F
O
F
F
F
F
O
F
O
F
O = LED OFF
= LED ON
●
F = Flashing LED
TIMER
O
Defective indoor unit room sensor
F
Defective Indoor unit coil sensor
F
Communication trouble between indoor and outdoor unit Contact service centre
Unit A or B has not been set for Multisplit System
(see Installation Instruction)
O
Outdoor unit trouble
F
operating mode selected is not compatible with the unit
for Multisplit System
O
Malfunctioning of the condensate drainage system
POSSIBLE CAUSE
14
REMEDY
Contact servce centre
Contact servce centre
Set unit A or B with Remote control
Contact servce centre
Change mode
Contact servce centre
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