Daikin Super Multi NX FFQ25B8V1B Service Manual page 339

SiBE121021_C
Troubleshooting
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 connector
connection.
Is it connected properly?
YES
Check the thermistor
resistance.
Is it normal?
YES
Check the contact between
the thermistor and the indoor
unit PCB.
Is the contact OK?
YES
NO
C4
: Indoor heat exchanger thermistor
(R2T).
C9
: Room temperature thermistor (R1T).
NO
NO
Correct the connection.
Replace the thermistor.
Correct the contact.
Replace the indoor unit PCB.
(R11299)
327