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20
Troubleshooting
When...
■ The remote control is missing or a malfunction has occurred
AUTO
OFF/ON
( Structure of the
unit may vary
depending on the
model)
1. Raise the front panel.
2. Press AUTO OFF/ON once to use in AUTO mode.
3. Press AUTO OFF/ON until you hear 1 beep, then release to use in
forced COOL mode.
4. Press AUTO OFF/ON until you hear 2 beeps, then release to use in
forced HEAT mode.
5. Press AUTO OFF/ON again to turn off the unit.
■ The indicators are too bright
• To dim or restore the indicators’ brightness on the unit, press
on the remote for 5
seconds.
■ Conducting a seasonal inspection after extended period of non-use
• Check the batteries.
• Check that there is no obstruction around the air inlets and outlet vents.
• Use AUTO OFF/ON on the unit to select COOL or HEAT mode. For details, refer “The
remote control is missing or a malfunction has occurred” above. After 15 minutes of
operation, it is normal to have the following temperature difference between the air inlet and
outlet vents:
COOL: ≥ 8 °C / 14.4 °F
HEAT: ≥ 14 °C / 25.2 °F
■ The units will be not used for an extended period
• Activate HEAT mode for 2~3 hours to remove any moisture left in the internal parts
thoroughly. This is to prevent mould growth.
• Turn off the power supply and unplug the unit.
• Remove the batteries from the remote control.
NON SERVICEABLE CRITERIAS
TURN OFF THE POWER SUPPLY AND UNPLUG THE UNIT. Then consult an authorised
dealer in the following conditions:
• Abnormal noise during operation.
• Water/foreign particles have entered the remote control.
• Water is leaking from the indoor unit.
• The circuit breaker switches off frequently.
• The power cord becomes unnaturally warm.
• The switches or buttons are not functioning properly.
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