Daikin Super Multi NX FFQ25B8V1B Service Manual page 329

SiBE121021_C
Troubleshooting
Check No.11
Refer to P.363
Service Diagnosis
Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the indoor unit - outdoor
unit connection wires.
Is there any wiring error?
NO
Check the voltage of the indoor
unit-outdoor unit connection wires
between No. 1 and No. 3, and
between No. 2 and No. 3.
Properly insulated?
NO
Check the LED A on the outdoor
unit PCB.
Is LED A blinking?
YES
Check No.11
Check the power supply
waveform.
Is there any disturbance?
YES
YES
YES
NO
NO
Correct the indoor unit -
outdoor unit connection wires.
Replace the connection wires
between the indoor and
outdoor units.
Diagnose the outdoor unit
PCB.
Replace the indoor unit PCB.
Locate the cause of the
disturbance of the power
supply waveform, and correct
it.
(R14556)
317