Si20-701_B
Troubleshooting by Remote Controller
264
Troubleshooting
Refer to P.488.
YES
External factors
(Noise, etc.)
Does it
return normally?
NO
NO
Replace the
inverter PCB for
the compressor
and the fan
inverter PCB.
NO
NO
Replace the
compressor and
the inverter PCB
for the
compressor at
the same time.
Replace the
inverter PCB.
YES
Check if
the insulation
resistance of the
compressor is more
than 100k
Ω
.
Turn OFF the power
supply once and then turn
it ON again.
YES
Replace the
inverter PCB.
YES
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is the power transistor
normal?
CHECK 16
Is the power transistor
for the fan driver
normal?
CHECK 16
CHECK 16