17
English
Cleaning the
Air Conditioner /
T
roubleshooting
Troubleshooting
The following symptoms do not indicate malfunction.
Symptom
Cause
POWER indicator blinks before the unit is switched
on.
• This is the preliminary step to prepare for the TIMER
operation after it has been set.
• When Timer is set ON, the unit may start earlier (up to 35
minutes) before the actual set time to achieve the desired
temperature on time.
POWER indicator blinks during HEAT mode with no
warm air supply (and
fl
ap is closed).
• The unit is in defrost mode (and AIR SWING has been set to
AUTO).
POWER indicator blinks, then stops blinking during
COOL/DRY mode.
• The system has been locked to operate in HEAT mode only.
TIMER indicator is always ON.
• When Timer has been set, the Timer setting repeats daily.
Operation is delayed a few minutes after restarting. • The delay is a protection to the unit’s compressor.
Cooling/heating capacity is reduced during lowest
fan speed setting.
• The lowest fan speed is to have a low noise operation, so
cooling/heating capacity may be reduced depending on the
condition. Increase the fan speed to increase the capacity.
In COOL mode, when the room temperature
reaches near the set temperature, the compressor
stops, then the indoor unit fan speed reduced.
• To prevent the room humidty rising. The indoor fan will
resume running according to the set fan speed when room
temperature increase.
Indoor fan stops occasionally during heating
operation.
• To avoid unintended cooling effect.
Indoor fan stops occasionally during automatic fan
speed setting.
• This is to help remove the surrounding odour.
Air
fl
ow continues even after operation has stopped. • To extract the remaining heat from the indoor unit (maximum
30 seconds).
The room has a peculiar odour.
• This may be due to damp smell emitted by the wall, carpet,
furniture or clothing.
Cracking sound during operation.
• Changes in temperature caused the unit to expand and
contract.
Water
fl
owing sound during operation.
• Refrigerant
fl
ow inside the unit.
Mist emerges from indoor unit.
• During cooling operation, the discharged cold air may
condense to water vapour.
Outdoor unit emits water or steam.
• During cooling operation, condensation occurs on cold pipes
and the condensed water may drip from the outdoor unit.
• During heating operation, frost formed on the outdoor unit
during deice cycle melts and is discharged as water or steam.
Discoloration of some plastic parts.
• Discoloration is subjected to the types of materials used in
plastic parts. It is accelerated when exposed to heat, sun
light, UV light or environmental factors.
Check the following before calling for servicing.
Symptom
Check
Operation in HEAT/COOL mode is not working
ef
fi
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 is not obstructed.
• Certain
fl
uorescent lights may interfere with the signal
transmitter. Consult an authorised dealer.
