Skip to content
Appointment timing depends on ZIP code, route capacity, and appliance type.
Whirlpool kitchen and laundry repair. Clear estimates before any work begins.
Call (844) 968-2053
Whirlpool service — Whirlpool Cooktop F21 Code

Whirlpool

Whirlpool Cooktop F21 Code Supply Frequency or Overheating

Book a Repair (844) 968-2053
Daniel Reeves Written by Daniel Reeves Appliance Repair Content Specialist Published October 20, 2026

Whirlpool

Code overview at a glance.

The facts for this Whirlpool error, a plain-language snapshot, and what to confirm against your model number.

Error code F21
Appliance Cooktop
Content status Verified
Quick answer

Two readings of F21 are published for Whirlpool cooktops. The reset is the same for both.

Model note: Whirlpool 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.

Whirlpool

What this code may mean.

A plain-language reading of the code — always confirm against your model’s documentation.

F21 is listed as a power supply frequency problem, or as cooktop overheating.

Two readings, one reset

  • Electric cooktops: the frequency of the incoming supply is the stated issue.
  • Radiant models, and electric-and-induction models: the cooktop may be overheating. Verify how it is installed and let it cool for approximately 5 minutes.

To reset, shut off the circuit breaker for a minute, restore it, and see if F21 reappears.

Codes to compare

F25 (supply feeding the cooktop); F22 (touch control module communication).

Cooktop repair in the Miami, New York, Houston, Los Angeles and San Diego areas

If F21 persists, talk to us on (844) 968-2053. We serve the Miami, New York, Houston, Los Angeles and San Diego metro areas; see cooktop repair for more. Quote the model number and the code.

Source: Whirlpool Product Help: F21 – Electric Cooktop; Whirlpool Product Help: F21 – Radiant – Electric Cooktop; Whirlpool Product Help: F21 – Radiant – Electric and Induction Cooktop

Whirlpool

Safety warning before you continue.

Stop immediately if you notice smoke, sparks, a burning smell, gas odor, or water near electrical parts.

Important

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.

Whirlpool

Seeing this code on your appliance?

Book an Whirlpool appliance service visit for a clear estimate and approval before any repair.

Experienced technicians, clear diagnostics, and workmanship coverage on completed repairs.

Book a Repair (844) 968-2053

Whirlpool

Ready to restore your Whirlpool appliance?

Book a repair online or call us — clear estimates, approval before any work, and a workmanship warranty on completed repairs.

Book a Repair (844) 968-2053

Whirlpool

Tell us what’s wrong — we’ll take it from there.

Share a few details and we’ll confirm an appointment. Prefer to talk? Call us and we’ll help right away.

Prefer to call? (844) 968-2053
  1. Share the symptom Tell us the Whirlpool model and what’s going wrong.
  2. Confirm a window We’ll schedule a visit that fits your day.
  3. Approve before work You get a clear estimate — nothing starts without your OK.
Phone (844) 968-2053
Email info@whirlpoolservicecenter.support
Hours Mon–Sat: 8:00 AM – 7:00 PM
Service area Serving Miami, New York, Houston, Los Angeles and San Diego metro areas.
Response time Appointment timing depends on ZIP code, route capacity, and appliance type.
(844) 968-2053 Book a Repair