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Error code reference
Whirlpool Range Error Code F-21
Supply power frequency error (induction cooktop)
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$285
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Diagnostic procedure
The full F-21 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
Unplug range or disconnect power. Replace the Induction Power System (IPS). If issue persists, contact qualified electrician to verify home power supply frequency is 60 Hz.
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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