4-Way Valve Coil (Solenoid Coil)/4-Way Valve - Fujitsu AMUG30LMAS Service Manual

4-5. 4-way valve coil (solenoid coil)/4-way valve

Check point 1. Check connection
• Check the connection of connector P60.
↓
Check Point 2 : Check Solenoid Coil
Remove P60 from PCB and check the resistance value of coil.
Resistance Value ≈ 2.085 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 Operation Heating Operation
4-way valve
ON
HOT GAS
SOLENOID COIL
→ If the valve location is not proper, replace 4-way valve.
↓
Check Point 4: Replace Main PCB
If none of Checks 1 to 3 apply, replace the Main PCB.
4-5. 4-way valve coil (solenoid coil)/4-way valve
SOLENOID COIL
HOT GAS
DC
BLUE
4WV
1 1
RED
3 3
HOT GAS
Cooling Operation Cooling Operation
4-way valve
OFF
SOLENOID COIL
- (03-56) -
HOT GAS
DC
4. Service parts information