Check
Cooling operation is not working effi ciently. •  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.
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 not obstructed.
• Certain fl uorescent lights may interfere with signal transmitter. Please 
consult your nearest dealer.
Patrol sensor or e-ion indicator on the indoor 
unit is blinking.
• Press 
 or   twice. If the patrol sensor or e-ion indicator still 
blinking, please consult your nearest dealer.
Cause
Mist emerges from indoor unit. •  Condensation effect due to cooling process.
Water fl owing sound during operation. •  Refrigerant fl ow inside the unit.
The room has a peculiar odour. •  This may 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 odours.
Operation is delayed a few minutes after 
restart.
•  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.
Cracking sound during operation.  •  Changes of temperature cause the expansion/contraction of the unit.
Inconsistent airfl ow during PATROL operation. •  Fan speed is adjusted automatically during patrol operation.
  Select QUIET operation to maintain the airfl ow consistency.