Service manual

– 72 –
NO
YES
Press the START/STOP button.
Is transmission
mark indicated?
The unit does not beep at all.
Operation lamp on indoor
unit is not indicated.
NOTE : After replacing batteries,
push the RESET button
with a tip of a pencil.
Is receiver
on indoor unit
exposed to
direct sunlight?
Avoid direct
sunlight.
Is there any
thyristor
fluorescent light
nearby?
Keep indoor unit
away from thyristor
fluorescent light.
Does indoor unit
operate when moving
remote controller
near receiver or
indoor unit?
Batteries are
exhausted.
Does radio sound
is affected by remote
controller when a signal is
transmitted at distance of
5 cm from radio?
Is transmission
mark indicated?
P.C. board
is defective.
Replace
P.C. board.
Replace
batteries.
Replace
remote controller.
Normal
operation
Remote controller
is defective.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Does indoor unit
start to operate by
automatic restart
function?
Press the START/
STOP button
Does indoor unit
beep and operate?
Press RESET button
on remote controller
with tip of pencil.
(5) Troubleshooting for remote controller
<Primary check>
Check that A or B selected on the main unit is matched with A or B selected on the remote controller.