(2)
Switch
Step
Does the input signal (NO) of the control board change
1
from L to H when the switch is turned on?
(3)
Solenoid
Step
Does the output signal of the control board change
1
from H to L when the solenoid is activated?
Check
Check
1
2
1
2
T-2
Result
Replace the
NO
switch.
Replace the con-
YES
trol board.
NO
Not Use
COM
4025T523AB
Result
Replace the con-
NO
trol board.
Replace the sole-
YES
noid.
1
2
4025T522AA
Action
Action