4-7. 4-way valve coil (solenoid coil)/4-way valve
¢ Models: AOYG45KRTA and AOYG54KRTA
Check point 1. Check connection
• Check the connection of connector P60.
P60
BLACK
SOLENOID COIL
4WV
1 1
3 3
BLACK
Check Point 2 : Check solenoid coil
Remove P60 from PCB and check the resistance value of coil.
Resistance value ≈ 1.97 kΩ
If it is Open or abnormal resistance value, replace solenoid coil.
Check Point 3: Check operation of 4-way valve
Check each piping temperature, and confirm the location of the valve by the temperature difference
Heating OperationHeating Operation
DC
SOLENOID COIL
4-way valve
HOT GAS
HOT GAS
ON
Cooling OperationCooling Operation
DC
SOLENOID COIL
4-way valve
HOT GAS
HOT GAS
OFF
If the valve location is not proper, replace the 4-way valve.
Check Point 4: Replace Main PCB
If none of Checks 1 to 3 apply, replace the Main PCB.
4-7. 4-way valve coil (solenoid coil)/4-way valve - (03-57) - 4. Service parts information
TROUBLESHOOTING
TROUBLESHOOTING
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