Written by
Tessa Brandt Appliance Care EditorPublished October 29, 2026
VERIFIED
Error codeF21
ApplianceCooktop
Two Maytag descriptions of F21
For radiant electric and induction cooktops, Maytag points to possible overheating: check how the cooktop is installed and give it roughly 5 minutes to cool.
For the electric cooktop entry, the stated problem is power supply frequency.
Same reset for both
Neither entry changes the remedy. Switch the cooktop’s circuit breaker(s) off, wait out a full minute, and restore them. Afterwards observe the display for another minute and verify that the cooktop works.
Related Maytag cooktop codes
F22: touch control module communication, one number up
An F21 that survives the cool-down and reset needs a technician visit. We take calls from San Francisco and the Bay Area on (415) 649-2156; Maytag cooktop repair has more. Have F21, the model number and the way the cooktop is installed ready.
Model compatibility: Maytag reuses codes across series and model years, so F21 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The cooktop may be overheating, or the electric cooktop entry points to a power supply frequency problem.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Maytag appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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Book a repair online or call us — clear estimates and approval before any repair work begins.
