21
English
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.
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.
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.
•
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.
The unit does not work. • Check if the circuit breaker is tripped.
• Check if timers have been set.
The following symptoms indicate malfunction.
Symptom Check
The unit stops and TIMER indicator blinks.
At remote control, OFF indicator does not shown
on remote control display but operation LED OFF.
• Use remote control to retrieve error code as follows.
OFF
/
ON
TEMP
TIMER/CLOCK
MODE
QUIET/
POWERFUL
FAN SPEED
MODE
CHECK RESET
AIR SWING
OFF/ON
CANCELCLOCK
SET
SELECTUP
DOWN
AC RC
OFF Indicator
Operation LED
3/12
Ensure the operation LED is in OFF condition.
1
Press
CHECK
for 5 seconds
2
Press TIMER
UP
or
DOWN
• If error code and abnormality can be identified, the
operation LED will be ON continuously, then jot
down the error code.
3
Press
CHECK
again for 5 seconds to quit checking
4
Reveal the error code to authorised dealer
Cleaning instructions / Troubleshooting
ACXF55-18920_book1.indb 21ACXF55-18920_book1.indb 21 1/10/2018 11:59:40 AM1/10/2018 11:59:40 AM
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