Daikin FTKM-U Series Service Manual page 80

Troubleshooting
Troubleshooting
Reference
Check No.01 Refer to P.90
Reference
Check No.12 Refer to P.92
Reference
Check No.14 Refer to P.93
76
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
NG
Check No. 01
Check the thermistors.
OK
Check No. 12
NG
Check the electronic
expansion valve.
OK
Check No. 14
NG
Check the refrigerant
line.
OK
∗
Discharge pipe thermistor
∗
Outdoor heat exchanger thermistor
∗
Outdoor temperature thermistor
∗
Refrigerant shortage
∗
Water mixed
∗
Stop valve
SiMX042215E
Replace the defective
thermistor(s).
Replace the electronic
expansion valve or the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB (main PCB).
(R20525)
Part 6 Service Diagnosis