Error code reference

Whirlpool Dishwasher Error Code F7E2

MCU Fault or Motor Overheat

Whirlpool codes Whirlpool dishwasher codes

MCU Fault or Motor Overheat - the heat sink exceeds 212°F (100°C). CCU will reset MCU and wait for motor to cool before restarting, repeating up to 4 times before displaying F7E2.

First step from the service manual

Ensure washer is not near heat source and has proper ventilation; check drum is not overloaded; verify drum rotates freely. See TEST #3 (Motor Circuit) on page 13.

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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F7E2 on my Whirlpool WDT730PAHZ

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MCU Fault or Motor Overheat - the heat sink

From Tech Sheet W10358534, p.26:

1.Ensure washer is not near heat source and has proper ventilation; check drum is not overloaded; verify drum rotates freely. See TEST #3 (Motor Circuit) on page 13.

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

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First step from the service manual

Get the full diagnostic procedure for F7E2.

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