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How to test the touchpad in a Whirlpool dishwasher

Samurai Appliance Repair Man

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PROBLEM: WON’T RUN AND LED ABOVE KEY(S) IS BLINKING

Stuck key(s) or shorted circuit(s) in keypad.

Checking keyswitch contacts:

■ Unplug dishwasher or disconnect power.

■ Remove connector P1 from the control board.

Using the table below, measure the resistance across the switch when the key is pressed.

NOTE: The meter must be connected with the proper polarity.

If using an ANALOG readout meter:

The resistance reading should go from infinity (open circuit) down to a readable ohm level.

The level may be different depending on your meter, since there is a diode in the circuit.

If using a DIGITAL readout meter:

The resistance reading should go from infinity down to a readable ohm level.

The level may be different depending on your meter, since there is a diode in the circuit.

If available, you could use the “Diode Test” function of a digital meter, which will give a voltage of about 1.2 VDC during the test.

➔If any switches fail this test, replace the console panel/keypad assembly.

➔If all switches test OK, replace the machine control board

KEYSWITCH RESISTANCE CHECK TABLE

KEY . . . . . . . . . . . . . . . . . . +Pos. Lead . . . –Neg. Lead

CANCEL/DRAIN . . . . . . . . . . . . . . . P1-12 . . . . . . P1-2

SOAK & SCOUR . . . . . . . . . . . . . . . P1-11 . . . . . . P1-3

DELAY HOURS. . . . . . . . . . . . . . . . P1-12 . . . . . . P1-3

ANTI-BACTERIA/BAKED-ON COOKWARE. . . . . . P1-13 . . . . . . P1-3

HIGH TEMP SCOUR/HIGH TEMP SCRUB. . . . . . P1-11 . . . . . . P1-4

START . . . . . . . . . . . . . . . . . . .P1-12 . . . . . . P1-4

POTS & PANS/HEAVY . . . . . . . . . . . . .P1-13 . . . . . . P1-4

SANI RINSE . . . . . . . . . . . . . . . . P1-11 . . . . . . P1-5

RINSE ONLY/QUICK RINSE . . . . . . . . . . P1-12 . . . . . . P1-5

NORMAL WASH/NORMAL . . . . . . . . . . . . P1-13 . . . . . . P1-5

AIR DRY/ENERGY SAVER DRY/NO HEAT DRY . . . P1-11 . . . . . . P1-6

QUICK WASH/QUICK CLEANUP/TIME SAVER. . . . P1-12 . . . . . . P1-6

CHINA/LIGHT. . . . . . . . . . . . . . . . P1-13 . . . . . . P1-6

It you find the touchpad is bad, buy the replacement touchpad here.

Source: Whirlpool dishwasher,model # GU1200XTLS1