Sanyo CH3632 Benutzerhandbuch

 – 61 –

SM830076

1)

Symptom: LCD on the remote controller does not display and remote controller does not

operate.

No

No

No

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Start

Replace the 
indoor unit PCB.

Is there 12 V DC  
between 2 and 3 
of the remote 
controller?

Replace the 
remote controller.

Repair the 
remote 
controller 
wiring.

Has the indoor 
unit PCB fuse blown?

Check and repair the 
power breaker etc.

Replace the indoor unit’s
power transformer.

Is the 230-208 V AC
circuit shorted?

Replace or repair.

Replace the 
indoor unit PCB.

Is there 230-208 V AC 
between R and S of 
the indoor PCB?

Is the LED (D80) on 
the indoor unit PCB lit?

 Is there 12 V DC 
between R2 and R3 
on the 8P terminal 
plate of the indoor unit?

Is the primary 
side of the indoor 
power transformer 
shorted?

Is there 230-208 V AC 
between U1 and U2 
of the 8P terminal 
plate?

Are the connections 
for the 4P connector 
for the indoor unit’s 
PCB power trans-
former good?

Is there 15 V AC 
between 1 and 2 
of the 4P connector 
for the indoor unit’s 
power transformer?

Miswiring of 
power supply 
wires and
indoor/outdoor 
control lines

Correct the 
connections 

Replace the 
indoor unit power 
transformer.

Correct the 
wiring. Remove the 
socket connected to 
the OC plug on the 
PCB and connect to 
the EMG plug instead.