Fujitsu ASU18RLF Service Instructions Manual page 92

Test 2 : Check Coil of EEV
Remove connector, check each winding resistance of Coil.
Read wire Resistance value
White - Red
Yellow - Blue
Orange - Red
Blue - Orange
If Resistance value is abnormal, replace EEV.
Test 3 : Check Voltage from Main PCB.
Remove Connector and check Voltage (DC12V)
If it does not appear, replace Main PCB.
Test 4 : Check Noise at start up
Turn on Power and check operation noise.
If an abnormal noise does not show, replace Main PCB.
(SERVICE PARTS INFORMATION 10)
Test 5 : Check Opening and Closing Operation of Valve
When Valve is closed,
it has a temp. difference between Inlet and Outlet.
CLOSE
Example : Hot Gas
Pipe (In)
Hi TEMP.
Test 6 : Check Strainer
Strainer normally does not have temperature difference between inlet and outlet as shown in
but if there is a difference as shown in
P p i e I ( ) n
46 4
at 68°F(20°C)
Pipe (Out)
Normal TEMP.
, there is a possibility of inside clogged. In this case, replace Strainer.
P p i e ( O u ) t
02-52
If it is open,
it has no temp. difference between Inlet and Outlet.
OPEN
Example : Hot Gas
Pipe (In)
Hi TEMP.
P p i e I ( ) n
Pipe (Out)
Hi TEMP.
,
P p i e ( O u ) t