Connect it properly.
(R7174)
NO
YES
Connect it properly.
NO
YES
Replace the reactor.
NO
YES
Replace the compressor or
the compressor relay
harness.
Restart the operation again
and if the error occurs
again, replace the outdoor
unit PCB.
NO
YES
Disconnect the reactor from the outdoor
unit PCB and measure the resistance
value between reactor terminals with
tester.
Disconnect the compressor relay harness
from the outdoor unit PCB and measure
the resistance value between the each 3
terminals of the compressor with tester.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power.
Check the connection of the
reactor.
Connection OK?
Check the connection of the
compressor.
Connection OK?
Check the reactor.
10 Ω or less?
Check the compressor.
Between all each
terminal 10 Ω or
less?
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