Daikin B-Series Service Manual page 115

Check
5.1.4 Four Way Valve Performance Check
Check No.5
106
Turn off the power and turn it on
again.
Start the heating-mode run.
S80 voltage
at DC 180-220 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
-
DC180 220V
Compressor
ON
∗ Four way valve coil
Cooling / dry : No continuity
Heating : Continuity
NO
NO
Time
Si06-313
Replace the outdoor unit
PCB.
Replace the four way valve
coil.
Replace the four way valve.
(R2856)
Service Diagnosis