Daikin F-Series Service Manual page 239

Troubleshooting
Troubleshooting
Check No.08
Refer to P.250
Check No.13
Refer to P.252
228
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the power supply
Check No. 08
Check the discharge pressure.
Judgment
Normal
Check No. 13
Check for short-circuit.
Normal?
YES
Check the electrolytic capacitor
voltage.
DC270±30V?
YES
Electricals or
compressor harnesses
connected as
specified?
Turn off the power. Disconnect the
harnesses U, V and W.
Check with the inverter checker (∗).
Any LED off?
NO
Abnormal
NO
NO
NO
YES
SiBE12-712C
Replace the stop valve.
Replace the outdoor unit
PCB, outdoor unit fan.
Replace the four way valve
coil.
Replace the outdoor unit
PCB.
Reconnect as specified.
∗ Inverter checker
Part No.: 1225477
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
(R7144)
Service Diagnosis