Pressure Switch - GE Spacemaker GSM1800J Series Technical Service Manual

6. Disconnect the 2 terminal lugs from the water
fill valve assembly.
7. Remove the 4 screws, and water fill valve
from the mounting bracket. Retain the
mounting bracket and screws.
Mounting Bracket
8. Reverse the above procedure to install.

Pressure Switch

The pressure switch is located under the tub at
the left, 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.
Left side of dishwasher
showing the path of the
pressure switch hose.
Pressure Switch
Removal and Replacement
1. Disconnect power.
2. Carefully, pull the dishwasher out far enough
from its installation, to access the float switch.
Pressure Switch
– 22 –
Fill Funnel
Pressure
Switch Hose