Fujitsu AUXB04GALH Service Manual page 196

SERVICE PARTS INFORMATION 17
Outdoor Unit Solenoid Valve
(SV1, SV2, SV3)
Check Point 1 : Check connections
Check connection of connector.
(Loose connector or open cable)
Check Point 4-1 : Check opening & closing operation of SV1, SV2
Depending on either during operation or protection control, check if Valve is operating normally.
(When Valve opens, Inlet and Outlet temperature is raised.)
Normal Operation
Pipe (In) TEMP. Normal,
Pipe (Out) TEMP.Normal
Pipe (In)
SOLENOIDE COIL
If the valve closes by removing the connector of the valve
which does not close, it is considered to be Main PCB
failure. Replace Main PCB.
If it does not close by removing connector, there is a
possibility of (1) clogging by dirt, or (2) deformation by
the heat at the time of Solenoid Valve installation.
In this case, replace Solenoid Valve.
Check Point 2 : Check Solenoid Coil
Remove connector and check if coil is open.
Solenoid Coil
SV1
SV2, SV3
>> If Resistance value is abnormal, replace Solenoid Coil.
Check Point 3 : Check Voltage from Main PCB
Remove connector and check the voltage (AC208- 230V).
>> If the voltage does not appear, replace Main PCB.
CLOSE
Pipe (Out)
AC
Resistance value 68 F(20 ° C)
Resistance value
1324 +7%
-
1495 +7%
-
Protection Function (Refer to 2-6-1),
Special Operation (Defrost, Oil recovery, Start-up)
Pipe (In) TEMP. Hi,
Pipe (Out) TEMP. Hi
Pipe (In)
OPEN
Pipe (Out)
SOLENOIDE COIL
(1)
04-120
°
AC
(2)
AC