Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 157

Troubleshooting for Indoor Unit
Troubleshooting
Check No.01
Refer to P.191
149
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the air passage.
Is there any short circuit?
NO
Check the air filter.
Dirty?
NO
Check the dust accumulation on
the indoor heat exchanger.
Dirty?
NO
Check No. 01
Check the indoor heat exchanger
thermistor.
As described in the
thermistor characteristic
chart?
YES
YES
YES
YES
NO
SiUS12-928_B
Provide sufficient air passage.
Clean the air filter.
Clean the indoor heat
exchanger.
Replace the thermistor.
Replace the indoor unit PCB.
(R15715)
Service Diagnosis