Pressure Switch - GE Monogram ZBD1800K Series Technical Service Manual

Pressure Switch

The pressure switch is located under the tub at
the right front corner. A clear plastic tube, the
pressure switch hose, runs from the float switch,
around the fill funnel, and to the sump.
As the dishwasher basin fills with water, the air
pressure in the pressure switch hose increases.
Normally, the timer regulates the amount of time
the water fill valve remains open. If the water fill
valve remains energized, the overfilling of the
basin increases the air pressure in the pressure
switch hose, causing the pressure switch to open
the circuit to the timer motor and closing the
circuit to the drain pump. The drain pump then
empties the water in the sump.
Fill Funnel
Pressure Switch
Removal and Replacement
1. Disconnect the electric supply from the
dishwasher.
2. Carefully pull the dishwasher out from its
installation.
3. Remove the 4 screws, access panel, and toe-
kick panel from the dishwasher.
4. Remove the 10 screws and the right side
panel.
Right side of dishwasher
showing the path of the
pressure switch hose.
Pressure
Switch Hose
– 23 –
5. Remove the capillary tube from the float
switch.
Pressure Switch Hose
6. Turn the float switch clockwise to align the
mounting tab vertically with the mounting hole,
and remove the float switch from the
dishwasher frame.
Turn
Mounting Tab
Mounting Hole
7. Label and disconnect the 3 terminal lugs from
the float switch, and remove the float switch.
3 Terminal Lugs