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Maintenance
7.5.2 Anomalies and remedies
If problems occur, please check the following before contacting a service centre.
Anomalies Possible causes Remedies
Unsatisfactory cooling
performance
The set temperature may be higher than
the room temperature
Set a lower temperature
The heat exchanger of the indoor or
outdoor unit is dirty
Clean the heat exchanger (Service Centre)
The air filter is dirty
Remove the filter and clean it following
instructions
The air inlet or outlet of the indoor or
outdoor unit is blocked
Switch the unit off, remove the cause of the
obstruction and switch the air conditioner on
again
Open doors and windows Close doors and windows when using the unit
Sunlight produces excessive heat
Close curtains and windows during the hottest
hours or when the sun is brightest
Too many heat sources in the room
(people, computers, electronic devices,
etc.)
Reduce heat sources
Low refrigerant level due to leakage or
prolonged use
Check for leaks, reseal the system if necessary
and refill the refrigerant (Service Centre)
The unit does not work
Power failure Wait for power to be restored
The power supply switch is off
Unit's power supply. This indoor unit is part of an
air conditioning system that has multiple indoor
units all connected. The indoor units cannot be
powered individually - they are all connected to
the same switch.
The fuse is blown Replace the fuse (Service Centre)
Remote control batteries are low Replace batteries
The unit starts or stops
frequently
The amount of refrigerant in the system
is excessive or insufficient
Check for leaks and top up the refrigerant
(Service Centre)
Incompressible gas has entered or
moisture has penetrated the system
Evacuate the system and recharge the
refrigerant (Service Centre)
The compressor is faulty Replace the compressor (Service Centre)
The voltage is too high or too low Install a voltage controller (Service Centre)
Unsatisfactory heating
performance
Cold air enters through doors and
windows
Close doors and windows when using the unit
Low refrigerant level due to leakage or
prolonged use
Check for leaks, reseal the system if necessary
and refill the refrigerant (Service Centre)
The indicator lights
continue to flash
The unit may stop or continue to operate properly. If the indicator lights continue to flash or
error codes are displayed, wait approximately 10 minutes. The problem may solve itself.
If not, disconnect the unit from the power mains and reconnect it. Switch on the unit.
If the problem persists, disconnect the unit from the power supply and contact the nearest
service centre.
An error code appears
on the display of the
indoor unit:
• E0, E1, E2…
• P1, P2, P3…
• F1, F2, F3…
NOTE: if, after performing the above checks and diagnostic procedures, the problem persists, switch the unit off immediately and
contact an authorised service centre.
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