Symptoms And Parts To Inspect - Sanyo SPW-C483GYH8 Service Manual

1. Troubleshooting

1-5. Symptoms and parts to inspect

(1) Symptom: LCD on the remote controller does not display and remote controller does not operate.
Yes
Miswiring of Is there 220-240 V AC
power supply between U1 and U2
wires and of the 8P terminal
indoor/outdoor plate?
control lines
Adjust and repair the
Correct the
power breaker etc.
wiring. Remove the
socket connected to
the OC plug on the
PCB and connect to
the EMG plug instead.
No
Correct the Are the connections
connection for the 4P connector
for the indoor unit's
PCB power trans-
former good?
Is there 15 V AC
Replace the
No
between 1 and 2
indoor unit power
of the 4P connector
transformer.
for the indoor unit's
power transformer?
Replace the
indoor unit PCB.
Start
Is the LED (D80) on
the indoor unit PCB lit?
No
Is there 12 V DC
between R2 and R3
on the 8P terminal
plate of the indoor unit?
No
No
Is there 220-240 V AC
between R and S of
the indoor PCB?
Yes
No
No
Has the indoor
unit PCB fuse blown?
Yes
Yes
Is the primary
side of the indoor
power transformer
shorted?
Yes
Yes
Replace the indoor unit's
power transformer.
III - 11
Service Procedures
Yes
Is there 12 V DC
No
Yes
between 2 and 3
of the remote
controller?
Yes
Replace the
remote controller.
No No
Is the 220-240 V AC
circuit shorted?
Yes
Replace or repair.
Repair the
remote
controller
wiring.
3
Replace the
indoor unit PCB.
0332_M_I
SM830052