Specifications

SiBE04-624_B Check
Service Diagnosis 137
3.6 Four Way Valve Performance Check
Check No.13
Start heating operation.
(R13938)
NO
∗ Four way valve coil
Cooling / Dry : No continuity
Heating : Continuity
YES
YES
Four way valve
coil resistance at
300 ~ 600 Ω?
NO
S80 voltage at
120 ~ 220 VDC for 3
sec. after compressor starts,
and then at about 12 ~15
VDC? (Fig. 1)
Turn off the power and turn it on
again.
Replace the outdoor unit
PCB.
NO
YES
S80 voltage at 0
VDC with
compressor on?
Disconnect the four way valve coil
from the connector and check the
continuity.
(Fig. 1)
Voltage at S80
120 ~ 220 VDC
12 ~ 15 VDC
Time
3 sec.
< Caution on resetting the power supply >
∗ Be sure to wait for 30 sec. or more after turning off the power supply.
Compressor
ON
Replace the outdoor unit
PCB.
Replace the four way valve
coil.
Replace the four way valve.