A-302
TROUBLESHOOTING
CEILING
CASSETTE PM
CEILING CASSETTE PM SERIES
NOTE: After a power cut, the unit will not restart automatically. You will have to restart it by pressing the POWER - ON/OFF button on the remote
controller.
If none of the above apply, turn the main switch off and contact the dealer from whom you bought the air-conditioner, telling him the model name and the nature
of the problem. Do not try to fix the unit yourself.
Wired remote controllers
In any of the following cases, turn off the main power switch and contact your local dealer for service:
• The operation lamp (on the main unit) flashes.
• The switches do not work properly.
• The circuit breaker trips frequently (or the fuse blows frequently).
• Water has accidentally been splashed into the unit.
• Water leaks from the unit.
• Something is accidentally dropped into the air-conditioner.
• An unusual noise is heard during operation.
Wireless remote controllers: The Operating LED blinks.
The following do not indicate any malfunction:
Odours: smells such as tobacco or cosmetic odours may persist after they have been sucked into the unit.
Sound of liquid flowing inside indoor unit: this can occur during or after operation and is simply the sound of refrigerant being circulated inside the unit.
Ticking sound coming from indoor unit: this can occur when cooling or heating has just begun or has just stopped. It is caused by the indoor unit shrinking or
expanding slightly due to the change in temperature.
The message “CENTRALLY CONTROLLED” appearing on the LCD panel: from time to time, this message may come up on the LCD panel. This does not indicate
any malfunction.
Problem
Unit does not cool or heat very well.
The unit stops operating before
arriving at the set temperature in
the heating mode.
The air flow direction suddenly
changes.
A white mist is expelled from the
indoor unit.
The indicators of the remote con-
troller do not light up when oper-
ated.
Problem
CENTRALLY CONTROLLED is dis-
played in the remote controller.
The start and stop functions are not avail-
able just after restarting the unit.
“H0” is displayed in the remote control-
ler.
An error code is displayed in the remote
controller.
The operating display of the wireless re-
mote controller’s receiver is flashing.
Solution
The start and stop functions of the re-
mote controller are not available when
the CENTRALLY CONTROLLED mes-
sage is lit.
Wait about three minutes (operation
has stopped to prevent damage to the
air conditioner).
An automatic startup test is being per-
formed (will last for about two minutes).
A self-diagnostic function is being per-
formed to preserve the air conditioner.
∗
Do not attempt to make repairs your-
self. Turn the main switch off and con-
tact the dealer from whom you bought
the air conditioner. Provide him or her
with the name of the unit and the in-
formation displayed in the remote
controller.
Solution
Clean the filter.
Frost forms when the outdoor tempera-
ture is low and humidity is high. Wait
for about 10 minutes for the frost to melt.
After one hour of cooling-mode opera-
tion with the air flow in a downward di-
rection, the unit will automatically
change to the “Horizontal air flow” mode.
When the unit is in the heating or de-
frosting mode, it will automatically
change to the “Horizontal air flow mode”.
This may occur just after the unit is
turned on when a high level of humid-
ity is present in the room.
Turn on the power switch. “ · ” will be
displayed.
A.6.11 TROUBLESHOOTING
