Water Valve And Flood Switch; Water Valve Test - GE PROFILE PDE9900 Technical Service Manual

Water Valve and Flood Switch

The water valve is a 120 VAC solenoid valve that is
switched on/off by the control module. The fl ood
switch acts as a safety switch ONLY and does not
control normal operation of the water valve. The
fl ood switch opens the L1 side of the water valve
circuit.
The switch is normally open. The weight of the
fl ood switch fl oat holds the switch closed. The fl ood
switch will not stop the fl ow of water if the valve
sticks open from a mechanical failure.
The water valve can be replaced with the
dish wash er installed.
WARNING: Disconnect power to dishwasher before
servicing water valve and fl ood switch.
The fl ood switch is held in place by 2 Phillips head
screws.
The water valve is secured to the frame by 2 hex
head screws.
Note: To prevent leaks after installation, ensure that
hose-to-valve connection is good and that clamp is
in place.
Flood Switch
Water Valve
– 25 –

Water Valve Test

Note: The detergent pump will also operate during
the water valve test.
1. Attempt to activate water valve using Service
Mode. Pump out water as necessary using
Service Mode. If an in ter mit tent failure is
suspected, activate water valve 5 times using
Service Mode. Water valve should stay on for 75
to 95 seconds per ac ti va tion and should not turn
on and off during the 75 to 95 second activation
time. A normal fi ll will be approximately 1.2
gallons.
2. If the water valve is not operating properly or
water level is low, check the following:
• Water valve, fl ood switch, fl ood switch fl oat
and stem, transorb, and then main control.
The fl ood switch should open when the
water level is approximately
base (bottom) of the fl oat dome.
• Resistance through the water valve so le noid
coil is 725 Ω to 1200 Ω.
• Clogged screen in water valve.
Water Valve Strip Circuit
PDW9700 Series and PDW9900 Series
WATER VALVE
FLOOD
SWITCH
YEL.
PINK
J2-5
C NO
PPDW8900 Series
FLOOD
SWITCH
WATER VALVE
YEL.
PINK
J2-5
C NO
1 / -in. above the
4
WHITE
725 - 1200 Ω
WHITE
725 - 1200 Ω