4-Way Valve Coil (Solenoid Coil)/4-Way Valve - Fujitsu AUXG18KVLA Service Manual

4-7. 4-way valve coil (solenoid coil)/4-way valve

¢ Models: AOHG36KRTA, AOHG45KRTA, and AOHG54KRTA
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 ≈ 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 Operation Heating Operation
4WAY 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.
4-7. 4-way valve coil (solenoid coil)/4-way valve
SOLENOID COIL
HOT GAS
AC
BLACK
4WV
1 1
BLACK
3 3
HOT GAS
Cooling Operation Cooling Operation
4WAY VALVE
OFF
SOLENOID COIL
- (03-66) -
HOT GAS
AC
4. Service parts information