Error code reference

Whirlpool Washer Error Code MCU FAILURE

If the heat sink gets too hot, the Motor Control Unit (MCU) stops the motor; if the condition continues four…

If the heat sink gets too hot, the Motor Control Unit (MCU) stops the motor; if the condition continues four times, the F31 code will show.

First step from the service manual

Check for proper installation, verify the unit is not located near a source of heat and has proper ventilation.

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

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MCU FAILURE on my Whirlpool WTW5000DW

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If the heat sink gets too hot, the Motor

From Tech Sheet W11944743, p.35:

1.Check for proper installation, verify the unit is not located near a source of heat and has proper ventilation.

2.Inspect the exhaust duct from the unit to the wall cap. A crushed or lint-blocked duct is the most common cause of airflow-related faults.

3.Measure static pressure at the blower housing with the lint screen removed. Expected: ≥ 1.0 in. w.c. in a still-air test.

Part W10861225

Blower wheel and housing

View all 413 Whirlpool washer codes

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