22
Troubleshooting
The following symptoms do not indicate malfunction.
Symptom
Cause
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.
• When ON Timer is set, the unit may start earlier (up
to 30 minutes) before the actual set time in order to
achieve the desired temperature on time.
TIMER indicator is always on.
• The timer setting repeats daily once set.
Operation is delayed a few minutes after
restarting.
• The delay is a protection to the unit’s compressor.
Indoor fan stops occasionally during heating
operation.
• To avoid unintended cooling effect.
Indoor fan stops occasionally during automatic
fan speed setting.
• This helps to remove the surrounding odour.
Air
fl
ow continues even after operation has
stopped.
• Extraction of 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 of temperature caused the expansion/
contraction of the unit.
Water
fl
owing sound during operation.
• Refrigerant
fl
ow inside the unit.
Mist emerges from indoor unit.
• Condensation effect due to cooling process.
Outdoor unit emits water/steam.
• Condensation or evaporation occurs on pipes.
Discoloration of some plastic parts.
• Discoloration is subject to material types used in plastic
parts, accelerated when exposed to heat, sun light, UV
light or environmental factor.
Dust may have collected around the front
panel, grilles and wall surrounding the unit
after extended use.
• 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.
Check the following before calling for servicing.
Symptom
Check
Operation in COOL/HEAT 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 signal
transmitter. Please consult authorised dealer.
nanoe™-G indicator at the indoor unit blinks
when nanoe™-G is activated.
• Use the remote control to retrieve error code and
consult authorised dealer.
ACXF55-28230_SS0320-1.indb 22
ACXF55-28230_SS0320-1.indb 22
21/2/2020 10:05:30 AM
21/2/2020 10:05:30 AM
