Troubleshooting by Indication on the Remote Controller
265
Turn ON the power
supply.
C
NO
Stop
(standby) before the
fan rotates.
YES
Recheck for the
power supply. If
there is no
problem with the
power supply,
replace the noise
filter PCB.
If the error
recurs, replace
the inverter PCB.
NO
Stop
(standby)
when the compressor
starts up.
YES
Recheck for the
power supply. If
there is no
problem with the
power supply,
replace the
inverter PCB.
∗
If the PCB
replaced is
badly damaged,
compressor is
likely to get
defective. To
make sure,
recheck the
compressor.
NO
The "
U2
"
error recurs.
YES
Check the
harness, and
then replace it if
necessary.
End of
measures:
∗
The error may
temporarily
result from
onsite causes.
Causes:
Instantaneous
power failure
(open phase),
noises, or else.
Power ON