TROUBLESHOOTING SECTION
8
WARNING:
Inspection, testing and repair of electrical equipment should be performed only by qualified service personnel. Certain
procedures in this section require electrical tests or measurements while power is applied to the machine.
Exercise
extreme caution at all times.
If test points are not easily accessible, disconnect power, attach test equipment and reap
ply power to test. When replacing electrical parts, disconnect power at source circuit breaker.
Possible Cause
Action
Faulty OFF/ON/FILL switch.
With switch ON, check voltage between
BLACK and WHITE/BLACK wires on switch.
Replace the switch if 120V.
Faulty NORMAL/DELIME switch.
In the NORMAL position, check the voltage
between WHITE/BLACK & WHITE/RED
wires to switch. If 120V, replace the switch.
Cycle reset switch loose.
Reposition switch assembly, bend metal
lever if necessary.
Faulty cycle reset switch.
Measure between BLACK/YELLOW &
ORANGE wires on "cycle reset" switch while
timer is rotating. As the switch lever drops
into home position you should measure
120V. If not, adjust or replace the switch.
Y-strainer plugged.
Clean strainer.
Water valve(s) turned off.
Turn on water valves.
Faulty solenoid valve diaphragm.
Replace diaphragm, clean foreign material
out of valve body and orifices.
Faulty solenoid coil.
If coil has voltage but no continuity, replace
coil (continuity is measured across coil
connectors with wires removed).
Faulty fill microswitch. Will not fill during
cycle only.
During fill, measure between the ORANGE
and WHITE/GREEN wires. If 120V, adjust
or replace switch).
Faulty OFF/ON/FILL switch.
Depress switch, measure between BLACK
and WHITE/GREEN wire. If 120V, replace
switch.
Solenoid valve dirty or faulty.
Clean valve, replace plunger and/or
diaphragm.
Faulty fill microswitch.
Repair/replace switch.
Cam timer stalled in fill position.
If cam timer is not rotating, check the
voltage to the timer motor. If 120V when
door is closed, replace the timer motor.
Shorted OFF/ON/FILL switch.
Check voltage between BLACK and
WHITE/GREEN connections of the switch in
the "ON" position. If you do not read 120V,
replace switch.
Loose wire connection to microswitch, relay,
or contactor.
Tighten wires.
Faulty wash cam microswitch.
During wash cycle, check voltage between
ORANGE and BLACK/ ORANGE wires on
the microswitch. If 120V, replace the switch.
Faulty delime switch.
During wash cycle, check the voltage
between the two BLACK/ ORANGE wires
(not jumpers). If 120V, replace the delime
switch.
Symptom
Machine cycles continuously.
Machine will not run in "ON" position or in
Delime mode.
Machine will not fill, other functions work.
Machine fills continuously even with no
power applied to machine.
Machine fills continuously, only when the
power is on.
Wash motor does not run, other functions
work, motor runs only when the wash relay
is manually pushed down.
