AirStage AO54FJ, Service Manual

Page: 124 / 169

SEVICE SEVICE PARTS PARTS INFORMATION 12 INFORMATION 12
4WAY VALVE
Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection
Check the connection of connector CN 5
Check Point 2: Check Solenoid Coil Check Point 2: Check Solenoid Coil
Check Point 3: Check Operation of 4 Way Valve Check Point 3: Check Operation of 4 Way Valve
ACIN
CN1-(1)
ACIN
CN1-(3)
4WAY VALVE
SOLENOID COIL
Remove CN6 from PCB and check the resistance value
of coil
Resistance Value
1.6K
If it is Open or abnormal resistance value, replace
Solenoid Coil
Heating Operation Heating Operation Cooling Operation Cooling Operation
AC
AC
SOLENOID COIL
4WAY VALVE
SOLENOID COIL
4WAY VALVE
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 Check Point 4: Check Voltage of Solenoid Coil
If CN6 of Control PCB dose not Show 220V + -20 V during Heating
operation (Compressor is in operation),replace Control PCB.
P/No.
9970035012 (4WAY VALVE)
P/No.
9900191016 (Solenoid COIL)
ON
OFF
06-54