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7.3 Remote controller troubleshooting
WARNING
Certain troubleshooting steps that a professional technician may perform when investigating an error are described in
this owner's manual for reference only. Do not attempt to undertake these steps yourself – arrange for a professional
technician to investigate the problem.
If any of the following errors occur, power the unit off and contact a professional technician immediately. Do not attempt
troubleshooting yourself:
- A safety device such as a fuse or circuit breaker frequently blows/trips.
- An object or water enters the unit.
- Water is leaking from the unit.
Table 7-2
Symptom
Possible causes
Troubleshooting steps
The fan speed cannot
be adjusted
- Check whether the MODE
indicated on the display is "AUTO".
- In automatic mode, the air conditioner
will automatically change the fan’s
speed.
- Check whether the MODE
indicated on the display is "DRY".
- When dry mode is selected, the air
conditioner automatically adjusts the fan
speed. (The fan speed can be selected
during "COOL", "FAN ONLY", and
"HEAT".)
The remote controller signal is
not transmitted even when the
ON/OFF button is pushed
- A power cut has occurred (the
power to the premises has been
cut-off).
- The remote controller's batteries
are dead.
- Wait for the power to come back on.
- Replace the batteries.
The indication on the display
disappears after a certain time
- Check whether the timer operation
has come to an end when TIMER
OFF is indicated on the display.
- The air conditioner operation will stop
up to the set time.
The TIMER ON indicator goes
off after a certain time
- Check whether the timer operation
has come to an end when TIMER
ON is indicated on the display.
- Up to the set time, the air conditioner
will automatically start and the
appropriate indicator will go off.
No receiving sound from the
indoor unit when the ON/OFF
button is pressed
- Check whether the signal
transmitter of the remote controller
is properly directed to the infrared
signal receiver of the indoor
unit when the ON/OFF button is
pressed.
- Directly transmit the signal transmitter
of the remote controller to the infrared
signal receiver of the indoor unit, and
then press the ON/OFF button twice.
