Error code reference

Maytag Dishwasher Error Code F6-E4

Float switch open

Float switch open - overfill switch stuck in overfill position and/or dishwasher not level; fill valve triac on control shorted; fill valve mechanically stuck open; too many suds; open fuse F9.

First step from the service manual

Remove any items stuck under float. Verify that the float moves freely and you hear the click of the switch contacts. Check/adjust level of the dishwasher.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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F6-E4 on my Maytag Dishwasher

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Float switch open - overfill switch stuck in

From Tech Sheet W15977571, p.23:

1.Remove any items stuck under float. Verify that the float moves freely and you hear the click of the switch contacts. Check/adjust level of the dishwasher.

2.Measure the inlet valve coil resistance at the valve connector. Expected: 1,000 to 1,200 ohms per coil at room temperature.

3.Verify static water supply pressure at the inlet hose. Below 20 psi or fluctuating supply commonly triggers fill-timeout faults.

Part WPW10212598

Water inlet valve

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First step from the service manual

Get the full diagnostic procedure for F6-E4.

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