Daikin Super Multi NX FFQ25B8V1B Service Manual page 335

SiBE121021_C
Troubleshooting FHQ Series
Note: There is a possibility of open phase power supply, also check power supply.
Service Diagnosis
Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the connections of X20A
and X26A.
Are X20A or X26A
or both properly
connected?
YES
Disconnect X26A and turn the
power on.
Check the voltage between the
pins 1 and 3 of X26A.
About 12 VDC?
YES
Check the indoor unit fan motor
and motor wiring.
NO
NO
Connect them correctly.
Replace the indoor unit PCB.
(R12862)
323