Troubleshooting for Outdoor Unit SiEBE18-526
318 Troubleshooting
Troubleshooting
Repair wiring.
NO
Is
connection
wire connected
between the connector
X205A and X25A?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(Q0442)
NO
YES
YES
YES
Replace the inverter PCB.
Does
the voltage
between terminals P
and N gradually rise to
283VDC after
turning
on?
The
voltage
between the P and N
terminals is 400VDC and
190VDC or more when
the compressor is
running.
NO
Is the
power supply voltage
at the connector X1A of
outdoor PCB
side?
Is the
power supply voltage
applied at LB and NB
on the noise filter
PCB?
Monitor field power
supply.
Check the transmission
wiring between the
outdoor unit PCB and
inverter unit.
NO
Replace the inverter PCB.
YES
NO
Replace the inverter PCB.
Turn on again.
YES
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