Temperature Sensor; Drain Motor; Water Valve And Flood Switch - GE Mabe GLD9312 Technical Service Manual

Clean Sensor
The clean sensor measures the amount of
suspended particles in the wash water in the
sump. The control sends the turbidity sensor a
pulse with modulated 5 volt signal for
calibration and usage during operation
Red
White
Blue

Temperature Sensor:

The dishwasher uses a thermocouple to
measure water temperature. The sensor has a
negative temperature coefficient - as the
temperature rises, the sensor resistance
decreases. At room temperature (25 Degrees
Celsius), the temperature sensor will have a
resistance of 11 K and at 60 degrees Celsius,
the temperature sensor resistance will be 2.8
K

Drain Motor

Drainage system consists of the following
components:
Drain motor
Drain hose (one way check valve)

Water Valve and Flood Switch

The water valve is a 120 VAC solenoid valve
that is switched on/off by the control module.
The flood switch acts as a safety switch ONLY
and does not control normal operation of the
water valve. The flood switch opens the L1
side of the water valve circuit.
The switch is normally open. The weight of the
flood switch float holds the switch closed. The
flood switch will not stop the flow of water if
the valve sticks open from a mechanical
failure.
The water valve can be replaced with the
dishwasher installed.
WARNING: Disconnect power to dishwasher
before servicing water valve and flood switch.
The flood switch is held in place by 2 Phillips
head screws.
Water Valve Test
Attempt to activate water valve using Service
Mode. Pump out water as necessary using
Service Mode. If an intermittent failure is
suspected, activate water valve 5 times using
Service Mode. Water valve should stay on for
50 to 71 seconds per activation and should
not turn on and off during the 50 to 71 second
activation time.
If the water valve is not operating properly or
water level is low, check the following:
17