Daikin Super Multi NX FFQ25B8V1B Service Manual page 356

Troubleshooting for Outdoor Unit
Troubleshooting
344
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn off the power.
Reactor connection check
Connection OK?
YES
Compressor connection check
Connection OK?
YES
Reactor check
10 Ω or less?
YES
Compressor check
Between each
terminal 10 Ω or
less?
YES
NO
NO
Disconnect the reactor from the outdoor
unit PCB and measure the resistance
value between reactor terminals with
tester.
NO
Disconnect the compressor relay harness
from the outdoor unit PCB and measure
the resistance value between each
terminals with a tester.
NO
SiBE121021_C
Connect properly.
Connect properly.
Replace the reactor.
Replace the compressor or
the compressor relay
harness.
Start the operation again
and if the error appears
again, replace the outdoor
unit PCB.
(R7174)
Service Diagnosis