35
Troubleshooting
Cleaning the
Air Conditioner /
T
roubleshooting
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
15 minutes) before the actual set time to achieve the
desired temperature on time.
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.
Indoor fan stops occasionally during automatic
fan speed setting.
• This is to help remove the surrounding odour.
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.
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.
After extended use, dust may cover the front
panel, grilles and the wall surrounding the
unit.
• The dust accumulation is due to the air puri
fi
cation
effect of negative ions from nanoe™-G. Remove the
dust regularly with a clean dampened cloth.
Soft buzzing sound from indoor unit during
nanoe™ TECHNOLOGY operation.
• It is normal when the nanoe™X generator is working.
If you are concerned about the sound, cancel the
nanoe™ TECHNOLOGY operation.
Check the following before calling for servicing.
Symptom
Check
Operation in 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.
The nanoe™ TECHNOLOGY indicator at
the indoor unit is not ON when nanoe™
TECHNOLOGY is activated.
• Use the remote control to retrieve the error code and
consult an authorised dealer.
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