Written by
Maren Coleman Appliance Care EditorPublished October 29, 2026
VERIFIED
Error codeE_21
ApplianceCooktop
E_21 on a Whirlpool induction cooktop is a heat message. Inside, the electronics climbed to an excessive temperature and the control panel switched off.
Cool first, reset second
Give the cooktop time to come down in temperature first.
Open the breaker and leave the circuit dead for sixty seconds.
Close the breaker.
Another cool-down comes before any cooking.
Observe the display over one minute.
Run the cooktop to see that it behaves normally.
Compare these overheat entries
E2: the control panel shuts down because of high temperature too.
An induction cooktop that still shows E_21 after cooling and a reset should be seen by a technician in San Francisco. Ring (415) 687-4102 and give the model number and what you tried first. See also Whirlpool cooktop repair.
Model compatibility: Whirlpool reuses codes across series and model years, so E_21 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 is too hot and the control panel switches off because of excessive temperature.
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 Whirlpool appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Repair for the Whirlpool WCI55US0JS 30-inch induction cooktop in San Francisco: zones that stay cold, pan detection problems, overheat shutdowns and dead…
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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