Si10-417
Troubleshooting
Service Diagnosis
155
5.4.4 Four Way Valve Performance Check
Check
No.5-1
Turn off the power and turn it
on again.
Start the heating-mode run.
Replace the outdoor
unit PCB.
Replace the four way
valve coil.
Replace the four way
valve.
(R2856)
NO
∗
Four way valve coil
Cooling / dry : No continuity
Heating : Continuity
YES
YES
Four way valve
coil resistance at 1500
Ω
?
NO
S80 voltage
at DC 180-220 V with
compressor on?
(Fig. 1)
Disconnect the four way valve
coil from the connector and
check the continuity.
(Fig. 1)
Voltage at S80
DC180-220V
ON
Compressor
Time
Si10-417.fm Page 155 Wednesday, September 22, 2004 6:38 PM
