Error code reference

Whirlpool Dishwasher Error Code 6-4

Float switch open; overfill switch stuck in open position and/or dishwasher not level; drain hose check valve not sealing; fill valve triac shorted or fill valve mechanically stuck open; too many suds; open fuse to fill valve and other triac loads.

Whirlpool codes Whirlpool dishwasher codes

Diagnostic procedure

The full 6-4 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Remove any items stuck under float. Verify that the float moves freely and you hear the click of the switch contacts. Check levelness of dishwasher. Measure switch resistance.

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

53 manuals in the MyPros+ library document this code for Whirlpool dishwasher.

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full 6-4 procedure

Where this code is documented

Models covered by the manuals that document this code

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