Fujitsu ARC90LHTA User Manual

SERVICE PARTS INFORMATION 3
Check Point 2 : Check coil of EEV
Check Point 1 : Check Connections
Check Point 3 : Check voltage from Main PCB.
Check Point 4 : Check Noise at start up
Outdoor Unit Electronic Expansion Valve (EEV)
Check connection of connector (Loose connector or open cable)
Remove connector, check each winding resistance of Coil.
If Resistance value is abnormal, replace EEV.
Remove Connector and check Voltage (DC12V)
If it does not appear, replace Main PCB.
Turn on Power and check operation noise.
If an abnormal noise does not show, replace Main PCB.
02-34
CN70
BLUE
RED
ORANGE
YELLOW
WHITE
1 2
3
4 5
6
1 2
3
4 5
6
EV
EXPANSION VALVE COIL
Red - Orange
Red - Yellow
Red - White
Red - Blue
Read wire
46 4
Resistance value
at 20°C
DC
Check Point 5 : Check opening and closing operation of valve
Pipe (In)
OPEN
Example : Hot gas
Pipe (Out)
Check Point 6 : Check Strainer
Pipe (In)
Pipe (Out)
CLOSE
Example : Hot gas
When valve is closed,
it has a temp. difference between Inlet and outlet.
If it is open,
it has no temp. difference between inlet and outlet.
Strainer normally does not have temperature difference between inlet and outlet as shown in ,
but if there is a difference as shown in , there is a possibility of inside clogged. In this case, replace Strainer.
Pipe (In) Pipe (Out)
Pipe (In) Pipe (Out)
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Fujitsu ARC90LHTA Specifications

General

Brand	Fujitsu
Model	ARC90LHTA
Category	Air Conditioner
Language	English