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How do I troubleshoot Whirlpool He Dishwasher that is displaying 3-1 or F3E1 error code?

Unplug the dishwasher and check the wiring between the electronic control board and the thermistor/OWI sensor. If the wire harness is broken, you can either repair or replace it. The thermistor/OWI sensor should be replaced if the wiring is undamaged.

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