11
Cleaning instructions /
T
roubleshooting
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 35
minutes) before the actual set time in order to achieve the
desired temperature on time.
POWER indicator blinks during HEAT mode with
no warm air supply (and flap is closed).
• The unit is in defrost mode (and AIR SWING is set to
AUTO).
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.
Airflow 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 flowing sound during operation.
• Refrigerant flow 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.
Soft buzzing sound from indoor unit during
nanoe™X operation.
• It is normal when nanoe™X generator is working. If you
have concern about the sound, cancel the nanoe™X
operation.
Wireless LAN LED stays ON during unit turn OFF.
• Unit’s LAN connection with the router is activated.
Check the following before calling for servicing.
Symptom
Check
Operation in HEAT/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 signal
transmitter. Please consult authorised dealer.
nanoe™X indicator at the indoor unit is not lit
when nanoe™X is activated.
• Use the remote control to retrieve error code and consult
authorised dealer.
English
ACXF55-27111_FC1219-1.indb 11
ACXF55-27111_FC1219-1.indb 11
11/21/2019 2:56:54 PM
11/21/2019 2:56:54 PM
