Daikin FVXS25FV1B Service Manual page 120

SiBE06-708
Troubleshooting
Check No.04
Refer to P.136
Check No.06
Refer to P.139
Check No.11
Refer to P.142
Service Diagnosis
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check No. 06
Check the thermistors.
Functioning
Check No. 04
Check the electronic expansion
valve.
Functioning
Check No. 11
Check the refrigerant line.
Functioning
Malfunctioning
Discharge pipe thermistor
Outdoor unit heat exchanger thermistor
Outdoor temperature thermistor
Malfunctioning
Malfunctioning
Refrigerant shortage
Four way valve malfunctioning
Water mixed
Stop valve defective
Troubleshooting
Replace a defective
thermistor.
Replace the valve itself or
the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R4700)
109