Check SiBE121123_A
211 Service Diagnosis
8.7 Four Way Valve Performance Check
Check No.13
8.8 Inverter Unit Refrigerant System Check
Check No.14
(R11903)
NO
YES
YES
NO
Turn off the power and turn it on
again.
Disconnect the four way valve coil
from the connector and check the
continuity.
Start heating operation.
∗ 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
1000 ~ 2000 Ω?
S80
voltage at 220 - 240
VAC with compressor
on? (Fig. 1)
(R11904)
(Fig. 1)
Voltage at S80
220 - 240 VAC
ON
Compressor
Time
Refrigerant system check
Is the discharge pipe
thermistor disconnected from
the holder?
Check for refrigerant leakage.
See the section on refrigerant
shortage detection.
(R15833)
YES
NO
Reconnect the thermistor.
Replace the refrigerant.
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