Air-conditioners / User’s Manual
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9.1 Air Conditioner is in error
Checking before service.
Phenomenon
Checking items
Air Conditioner Does Not
Operate at All
1. Check whether the power is disconnected.
2. Check whether the breaker is switched on or the fuse is burnt.
3. Check the remote controller batteries.
4. Check whether radio equipment is used within 1m around the unit.
Poor Cooling or Heating
Performance
1. Check whether the air inlet or outlet is blocked.
2. Check whether dust is blocking the filter.
3. There may be too many people indoors.
4. Check whether doors or windows are closed.
5. Check whether fan speed or set temperature is improper.
9.2 Remote controller is in error
The following “trouble shooting” is normal phenomenon
Phenomenon
Checking items
Fan stops or fan speed
cannot be controlled.
1. When air conditioner is in DRY mode or SLEEP mode, fan speed can't
be controlled sometimes.
2. When air conditioner is in COOL AIRFLOW PROOF or DEFROSTING
operation (in HEAT mode), fan motor will stop.
3. When air conditioner is in COOL or DRY mode, if air conditioner enters
freeze-prevention operation, then fan speed cannot be controlled.
4. When air conditioner is in HEAT mode, if air conditioner enters
heating overload prevention operation, then fan speed cannot be
controlled.
9
Troubleshooting
