9
ENGLISH
 TROUBLESHOOTING TROUBLESHOOTING
The unit stops and the timer indicator blinks.
The unit stops and the timer indicator blinks.
1
Press for 5 
seconds.
3
Press for 5 
seconds to 
quit checking.
2
Press until you hear 
beep sound, then jot 
down the error code.
•  Turn the unit off and reveal the error code to your nearest dealer.
•  The unit may be operable 
(with 4 beeps) on a limited 
basis, depending on the 
error.
Check
Heating/Cooling operation is not working 
ef ciently.
•  Set the temperature correctly.
•  Close all doors and windows.
•  Clean or replace the  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  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  owing sound during operation. •  Refrigerant  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.
Air ow continues even after operation has 
stopped.
•  Extraction of remaining heat from the indoor unit (maximum 30 seconds).
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.
Power indicator blinks during operation and 
the indoor fan is stopped.
•  The unit is in defrost mode, and the melted frost is drained from the 
outdoor unit.
Indoor fan stops occasionally during heating 
operation.
•  To avoid unintended cooling effect.
Power indicator blinks before the unit is 
switched on.
•  This is a preliminary step in preparation for the operation when the ON 
timer has been set.
Cracking sound during operation.  •  Changes of temperature cause the expansion/contraction of the unit.
  The following symptoms do not indicate malfunction.
  The following symptoms do not indicate malfunction.
  Check the following before calling for servicing.
  Check the following before calling for servicing.