Daikin Super Multi NX FFQ25B8V1B Service Manual page 358

Troubleshooting for Outdoor Unit
Troubleshooting
Check No.15
Refer to P.366
346
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn off the power.
Check the power supply voltage.
Voltage as rated?
YES
Check the connection.
Electrical
components or
compressor
harnesses connected
as specified?
YES
Turn on the power.
Check the electrolytic capacitor
voltage.
320 ± 50 VDC?
YES
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No. 15
Check with the inverter checker (∗).
Any LED OFF?
NO
NO
NO
NO
∗ Inverter checker
Part No.: 1225477
YES
SiBE121021_C
Correct the power supply.
Reconnect them as
specified.
Replace the outdoor unit
PCB.
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
(R14560)
Service Diagnosis