34
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 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 flowing sound during operation.
• Refrigerant flow 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 air purification effect of
negative ions from nanoe
TM
-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 efficiently.
• Set the temperature correctly.
• 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.
(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 fluorescent lights may interfere with the signal
transmitter. Consult an authorised dealer.
nanoe™ TECHNOLOGY indicator at the indoor unit
blinks or not lit when nanoe™ TECHNOLOGY is
activated.
• Use the remote control to retrieve the error code and consult
an authorised dealer.
ACXF55-29802_FA0121-2.indb 34
ACXF55-29802_FA0121-2.indb 34
1/13/2021 8:23:40 PM
1/13/2021 8:23:40 PM
