SiBE04-809 Check
Service Diagnosis 117
5.1.3 Four Way Valve Performance Check
Check No.05
(R8312)
NO
YES
YES
NO
(Fig. 1)
Voltage at S80
DC220-240V
ON
Compressor
Time
Turn off the power and turn it on
again.
Disconnect the four way valve coil
from the connector and check the
continuity.
Start the heating-mode run.
∗ Four way valve coil
Cooling / dry : No continuity
Heating : Continuity
Replace the outdoor unit
PCB.
Replace the four way valve
coil.
Replace the four way valve.
Four way
valve coil resistance at
3kΩ±0.5kΩ?
S80
voltage at DC 220-
240 V with compressor
on? (Fig. 1)