Error code reference

Whirlpool Oven Error Code F4E1

Microwave Oven Magnetron Thermistor Open or Shorted - Open sensor occurs when temperature reading is >995°F (535°C); shorted sensor occurs when temperature reading is <-0.4°F (-18°C).

SourceWhirlpool Oven - Tech Sheet: Service Diagnostics & Repairp. 13

Whirlpool codes Whirlpool oven codes

Diagnostic procedure

The full F4E1 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

Unplug oven or disconnect power. Check connector P21 of microwave oven AM. Disconnect P21 and measure resistance of thermistor (should be 27.8 kΩ at 77°F/25°C).

SourceWhirlpool Oven - Tech Sheet: Service Diagnostics & Repairp. 13

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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

24 manuals in the MyPros+ library document this code for Whirlpool oven.

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full F4E1 procedure

Where this code is documented

Models covered by the manuals that document this code

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