Daikin FTXS09HVJU Service Manual page 118

Troubleshooting
Troubleshooting
Check No.10
Refer to P.148
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts damage may occur.
Check the indoor unit-outdoor unit
connection wires.
Is there any wiring
error?
NO
Check the outdoor unit's LED A.
Is LED A flashing?
YES
Check the voltage of the indoor
unit-outdoor unit connection wires
between No. 1 and No. 3, and
between No 2 and No. 3.
Is the voltage 0 V?
NO
Rotate fan by hand.
Does fan rotate
smoothly?
YES
Check No.10
Check power supply waveform.
Is there any
disturbance?
YES
YES
NO
YES
NO
NO
SiUS04-904
Correct the indoor unit-outdoor
unit connection wires.
Diagnose the outdoor unit.
Replace the connection wires
between the indoor and
Replace fan motor and outdoor
unit PCB .
Replace indoor unit control
PCB .
Locate the cause of the
disturbance of the power supply
waveform, and correct it.
(R8300)
107