Daikin FVXS25FV1B Service Manual page 149

Check
50 class
138
Turn off the power and turn it on
again.
Start the heating-mode run.
S80 voltage
at DC 220-240 V with
compressor on?
(Fig. 1)
YES
Disconnect the four way valve coil
from the connector and check the
continuity.
Four way valve
coil resistance at
1500 ohms?
YES
(Fig. 1)
Voltage at S80
DC220-240V
Compressor
ON
∗ Four way valve coil
Cooling / dry : No continuity
Heating : Continuity
NO
NO
Time
SiBE06-708
Replace the outdoor unit
PCB.
Replace the four way valve
coil.
Replace the four way valve.
(R5220)
Service Diagnosis