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Error code reference
Whirlpool Microwave Error Code F4E1-1
Cavity NTC Failure - Shorted (short circuit in cavity NTC thermistor).
SourceWhirlpool Microwave - Tech Sheet: Service Diagnostics & Error Codes (W11739870)p. 2
Diagnostic procedure
The full F4E1-1 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
1
First diagnostic step
Enter the Diagnostics mode. Under diagnostics mode -> Component activation, review the Cavity NTC sensor temperature. If displayed temperature is not close to room temperature, replace Cavity NTC thermistor.
SourceWhirlpool Microwave - Tech Sheet: Service Diagnostics & Error Codes (W11739870)p. 2
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
4 manuals in the MyPros+ library document this code for Whirlpool microwave.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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