81
(2) Other case
Phenomenon
Cause
Countermeasure
Not working of remote con-
troller switch ON/OFF
Mis-connecting the remote control wiring.
Reinsert the connector of remote control wiring.
Mis-connecting the Interface P.C.board.
Reinsert the wiring connector of Indoor P.C.board
and Interface P.C.board.
Short circuit the protecting parts in the
Indoor P.C.board.
Check the varistor(NR11) and fuse(F11) out in the
Indoor P.C.board.
Trouble of the Interface P.C.board.
Check the Interface P.C.board out.
Trouble of the Indoor P.C.board.
Working the Indoor units and
not working the outdoor
units.
Trouble of the remote controller.
Exchange the remote controller.
Wiring between the indoor and outdoor is
coming off.
Check the wiring out between the indoor and
outdoor.
Difference of wiring polarity between the
indoor and outdoor.
Check the deicer P.C.board out.
Trouble of the deicer P.C.board.
Not rotating the fan in the
indoor unit.
Trouble of the contactor(52C1).
Trouble of the compressor(MC) and out-
door fan motor(MF).
Exchange the contactor.
Check the compressor and fan motor out.
Frequency switching connector is coming
off.
Fan motor connector is coming off.
Check the connector out.
Check the frequency (50Hz/60Hz) in the indoor
unit.
Trouble of the Indoor P.C.board.
Check the fan motor output of the Indoor
P.C.board.
Trouble of the fan motor.
Check the resistance value between the each tap
of fan motor.
Check the Indoor P.C.board out.
OC281-B-3.qxp 04.2.10 2:23 PM Page 81