Pressure Switch - GE GLDT690T Technical Service Manual

Pressure Switch

The pressure switch is an overfi ll safety device
mounted on a bracket located under the tub near
the right front corner. A clear plastic tube (the
pressure switch hose) runs from the pressure switch,
around the fi ll funnel, and to the sump.
As the dishwasher basin fi lls with water, the air
pressure in the pressure switch hose increases.
Normally, the electronic control regulates the
amount of time the water fi ll valve remains open. If
the water fi ll valve remains energized, the overfi lling
of the basin increases the air pressure in the
pressure switch hose causing the pressure switch to
open the circuit to the water valve and energize the
drain pump.
To remove the pressure switch:
1. Disconnect power.
2. Remove the outer door panel. (See
.)
Panel
3. Remove the 2 Phillips-head screws, washers,
and the access panel.
4. Remove the 2 Phillips-head screws that attach
the water valve and the junction box to the front
brace and lower each towards the fl oor.
Front Brace
Water Valve
5. Remove the 6 Phillips-head screws and the front
brace from the dishwasher.
6. Disconnect the pink wire from terminal 1, the
black wire from terminal 2, and the brown wire
from terminal 3.
7. Remove the pressure switch hose from the
pressure switch.
Outer Door
8. Raise the pressure switch to the top of the
bracket, rotate the switch 1/4 turn, and remove
it.
Junction Box
Note: When installing the pressure switch, ensure
the switch is fully seated in the bottom of the
bracket.
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Pressure Switch Hose
Pressure
Switch
Bracket