Check the connection of connector CN105 (CN156)
Check Point 3: Check Operation of 4 Way Valve
AC
AC
SOLENOID COIL
4WAY VALVE 4WAY VALVE
SOLENOID COIL
Check each piping temperature, and confirm the location of the valve by the temperature difference.
If the valve location is not proper, replace 4 way valve.
HOT GAS
HOT GAS
HOT GAS
HOT GAS
Check Point 4: Check Voltage of Solenoid Coil
If CN105 (CN156) of Control PCB dose not Show (AC208- 230V) during Heating
operation (Compressor is in operation), replace Main PCB.
ON
OFF
CN105: 4WV1
BLUE
SOLENOID COIL
4WV1
BLUE
1 1
2 2
Check Point 1 : Check Circuit connection
Check Point 2 : Check Solenoid Coil
SERVICE PARTS INFORMATION 19
4-WAY VALVE 1 (2)
Remove CN105 (CN156) from PCB and
check the resistance value of coil
Resistance Value
1.725k +10%
If it is Open or abnormal resistance value,
replace Solenoid Coil
-
-
CN156: 4WV2
04-113
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