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| The following symptoms do not indicate malfunction. |
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| Symptom | Cause |
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| Mist emerges from indoor unit. | • Condensation effect due to cooling process. |
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| Water flowing sound during operation. | • Refrigerant flow inside the unit. |
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| The room has a peculiar odour. | • | This may due to damp smell emitted by the wall, carpet, furniture or clothing. |
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| Indoor fan stops occasionally during automatic | • This helps to remove the surrounding odours. |
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| fan speed setting. |
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| Airflow continues even after operation has | • Extraction of remaining heat from the indoor unit (maximum 30 seconds). |
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| stopped. |
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| Operation is delayed a few minutes after restart. | • | The delay is a protection to the unit’s compressor. |
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| Outdoor unit emits water/steam. | • Condensation or evaporation occurs on pipes. |
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| Timer indicator is always on. | • | The timer setting repeats daily once set. |
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| Power indicator blinks during operation, the | • | The unit is in defrost mode, and the melted frost is drained from the |
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| indoor fan is stopped and vane is closed. |
| outdoor unit. |
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| Indoor fan stops occasionally during heating | • | To avoid unintended cooling effect. |
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| operation. |
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| Power indicator blinks before the unit is | • | This is a preliminary step in preparation for the operation when the ON |
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| switched on. |
| timer has been set. |
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| Cracking sound during operation. | • Changes of temperature cause the expansion/contraction of the unit. |
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Check the following before calling for servicing.
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Symptom | Check | |
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Heating/Cooling operation is not working | • | Set the temperature correctly. |
efficiently. | • | 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. | • | Insert the batteries correctly. |
(Display is dim or transmission signal is weak.) | • | 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.
PATROL operation does not work.
Patrol sensor indicator on the indoor unit is blinking.
•Make sure the receiver not obstructed.
•Certain fluorescent lights may interfere with signal transmitter. Please consult your nearest dealer.
•Press and hold 
for 15 seconds until beep sound is heard, press 
again.
•Press 
twice. If the patrol sensor indicator still blinking, please consult authorized dealer.
The unit stops and the timer indicator blinks.
Use remote control to retrieve error code.
1 | Press for 5 |
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3 | Press for 5 |
| seconds to quit |
checking.
2Press until you hear beep sound, then jot down the error code.
Note:
•For certain error, you may restart the unit with limited operation with 4 beeps during operation starts.
4Turn the unit off and reveal the error code to authorized dealer.
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