Check
SiBE12-933_A
214
Service Diagnosis
5.1.3 Four Way Valve Performance Check
Check No.05
(R7156)
Turn off the power and turn it on
again.
S80 voltage at DC
220-240 V with
compressor on?
(Fig. 1)
Start the heating operation.
Disconnect the four way valve coil
from the connector and check the
continuity.
Four way valve
coil resistance at
1500
Ω
?
YES
YES
NO
NO
Replace the outdoor unit
PCB.
∗
Four way valve coil
Cooling / dry : No continuity
Heating : Continuity
Replace the four way valve
coil.
Replace the four way valve.
(Fig. 1)
Voltage at S80
DC220-240V
Compressor
ON
Time