Fujitsu AB*14LBAJ Service Instruction page 90

SERVICE PARTS INFORMATION 4
Outdoor unit Electronic Expansion Valve
( EEV )
Check Point 1 : Check Connections
Check connection of connector
( Loose connector or open cable )
For AO*18LMAK2 / AO*24LMAM2
EXPANSION
RED
1
VALVE COIL A
BROWN
2
BLUE
3
CN27
E V
ORANGE
4
YELLOW
5
WHITE
6
EXPANSION
RED
1
VALVE COIL B
BROWN
2
BLUE
3
CN27
E V
ORANGE
4
YELLOW
5
WHITE
6
Check Point 2 : Check Coil of EEV
Remove connector, check each winding
resistance of Coil.
Read wire
White - Red
Yellow - Brown
46
Orange - Red
Blue - Brown
If Resistance value is abnormal, replace EEV.
For AO*30LMAW4
CN27
CN50
CN51
CN52
Resistance value
4
at 20°C
EXPANSION
RED
1
VALVE COIL A
BROWN
2
BLUE
3
E V
ORANGE
4
YELLOW
5
WHITE
6
EXPANSION
BLACK
RED
1 1 1 VALVE COIL B
WHITE BROWN
2 2 2
WHITE BLUE
3
4 3
E V
WHITE ORANGE
5 4 4
WHITE YELLOW
6 5 5
WHITE WHITE
6 6
7
WHITE
EXPANSION
BLACK RED
1
1 1
VALVE COIL C
GREEN BROWN
3 2 2
GREEN BLUE
4 3 3
E V
GREEN ORANGE
5 4 4
GREEN YELLOW
6 5 5
GREEN WHITE
6 6
7
GREEN
EXPANSION
BLACK RED
1
1 1 VALVE COIL D
GREEN BROWN
3 2 2
GREEN BLUE
4 3
3
E V
GREEN ORANGE
5 4 4
GREEN
YELLOW
6 5 5
GREEN WHITE
6 6
7
GREEN
Check Point 3 : Check Voltage from Main PCB.
Remove Connector and check Voltage (DC12V)
If it does not appear, replace Main PCB.
Check Point 4 : Check Noise at start up
Turn on Power and check operation noise.
If an abnormal noise does not show, replace Main PCB.
02-52
DC