13
Troubleshooting
Problem
Cause
Water leakage of
outdoor unit
• During cooling operation, water
condensates around the pipes and
connection joints.
• During defrosting operation, thawed
water flows out.
• During heating operation, water on the
heat exchanger drips out.
Noise from
indoor unit
• The noise emitted when the fan or
compressor relay is switched on or off.
• When the defrosting operation
is started or stopped, there is a
sound of refrigerant flowing in the
reverse direction.
Indoor unit does
not blow air
• In HEAT mode, when the temperature
of indoor heat exchanger is very low,
air flow is stopped until the heat
excharger warms up (approx 2 minutes).
• In HEAT mode, when the outdoor
temperature is low or humidity is high,
frost will be formed on the outdoor
heat exchanger. The unit will defrost
automatically and indoor unit will stop
blowing air for 3-12 minutes.
• During defrosting operation, water or
vapour may be emitted.
• In DRY mode, the indoor fan may stop
blowing air for 3-12 minutes in order
to avoid condensing water being
vaporised again.
Moisture on air
outlet
• If the unit operates at high humidity for
a long time, moisture will be generated
on the air outlet grill and then drip off.
H1: Defrosting
It is normal. The unit is in defrosting
mode and heating will recommence
soon.
E3: Low pressure
warning
Your air conditioner has lost refrigerant.
Contact your installer to check for
potential leaks.
If any one of the following situations occurs, immediately stop
all operations, disconnect the power supply, and contact the
authorised personnel.
•
There is a harsh sound during operation.
•
Strong odours are emitted during operation.
•
Water is leaking from the indoor unit.
•
The circuit breaker often trips.
•
Water or other liquid is splashed into the unit.
•
Power cord and power plug is overheating.
The air conditioner is not user serviceable. Incorrect repair may
cause electric shock or fire, so please contact an authorised service
center for professional repair.
The following checks prior to contact may save you time
and money.
Problem
Cause
The unit
does not
operate
The unit does not operate if it is turned on
immediately after it is turned off. This is to protect
the unit. You should wait about 3 minutes.
Odours are
emitted
• Some odours may be emitted from the
indoor unit. This is the result of room smells
(such as furniture,tobacco,etc.) which have
been taken into the air conditioner.
• Consult authorised service centre for
cleaning if the odours persist.
"Water
flowing"
noise
The swishing noise like water flowing is the
refrigerant flowing inside the unit.
Mist is
emitted in
COOL mode
During cooling operation, a thin mist may be
seen emitted from the indoor unit due to high
room temperature and humidity.
After a period of time, the mist will disappear
as the decrease of room temperature and
humidity decreases.
Cracking
noise
This is the sound of friction caused
by expansion and/or contraction of panel or
other parts due to the change of temperature.
The unit
can not be
started up
• Is the power cut off?
• Is the power plug loose? (if applicable )
• Is the circuit protection device tripped off?
• Is voltage higher or lower? (Tested by
professionals)
• Is the TIMER correctly used?
Cooling/
Heating
effect is poor
• Is temperature setting appropriate?
• Is the inlet or outlet blocked?
• Is the filter dirty?
• Is the window or the door open?
• Is low fan speed set?
• Are there heat sources in the room?
Remote
control does
not transmit
signals
• Check if there is magnetic or electrical
interference near the unit that may affecting
operation of the remote control. In this case,
pull the plug out and reinsert it.
• Is the remote control within its operating
range or obstructed? Check the condition of
the batteries and replace them if necessary.
• Check if the remote control is damaged.
Water
leakage of
indoor unit
• The humidity is high.
• Condensing water overflows.
• Drain hose is loose or obstructed.
Troubleshooting