13. Pressure Switches
There are two pressure switches on the dishwasher. One is for controlling normal water level set at approx. 85mm
or 3.5 inches of water in sump. This will be referred to as the Normal Pressure Switch. The other one is for
preventing overflow and is set for approx. 102mm or 4 inches of water in sump. This one will be referred to as the
Safety Pressure Switch. If the water in the tank rises above the pre-set level, the safety pressure switch opens the
Circuit and stops power to the fill valve and closes the circuit to the drain pump, expelling excess water.
The safety pressure switch shuts water off only in cases of electrical malfunction. If a mechanical defect or foreign
object causes the inlet valve to stick open, the safety pressure switch will not be able to stop the overflow.
The safety pressure switch should never cut off the water inlet valve solenoid during normal fill, if it does it is not
properly adjusted.
PROCEDURE
Inspecting and replacing: Pressure switch
Step 1: Be sure all controls are Step 2: This procedure requires the Step 3: Hold a ruler vertically in the
turned OFF. Disconnect power removal of the outer casing. If you sump, the tub should fill between
supply at distribution panel or are unfamiliar with this process, please. 81-87mm or 3.25 to3.5 inches.
unplug power cord from outlet. refer to procedure #7:Removing outer
watch for sharp edges. casing..
Step 4: If the water level is incorrect Step 5: If a pressure switch is bad Step 6: Pressure switches must be
Check the pressure switch connecting remove mounting screw and replace adjusted with a special screwdriver
hoses and all connections to see if switch. to the proper level (step 3).
there is air leakage and pressure loss. After adjustment is complete a drop
Reseal any loose connections. of glue should be placed on the
Threads to prevent further movement
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