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 (310) 448-6692

Whirlpool

Whirlpool Cooktop F21 Error Code

Book a Repair (310) 448-6692
Maya Ortiz Written by Maya Ortiz 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
Quick answer

F21 has two listed meanings: a power supply frequency problem, and cooktop overheating where installation should be verified and the unit cooled for about 5 minutes.

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.

Whirlpool Product Help gives F21 two readings, depending on the cooktop type.

Electric cooktops

The help describes a problem with power supply frequency.

Radiant, and electric and induction cooktops

Here the help describes a possible problem with the cooktop overheating. It says to verify the installation and to allow the cooktop to cool for approximately 5 minutes.

Reset the power

For each version the help lists a reset: turn the circuit breaker off for one minute, turn it back on, and see whether the code returns.

Related codes

  • F2: the surface cooking area is too hot
  • F25: a problem with power supply to the cooktop

Whirlpool cooktop service in Los Angeles

Call (310) 448-6692 if F21 is back after cooling and a reset. Our Los Angeles Whirlpool cooktop service is covered under cooktop repair. Please have the model number and the steps you took ready.

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 (310) 448-6692

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 (310) 448-6692

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? (310) 448-6692
  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 (310) 448-6692
Email info@whirlpoollosangeles.support
Hours Mon–Sat: 8:00 AM – 7:00 PM
Service area Serving Los Angeles County and Orange County.
Response time Appointment timing depends on ZIP code, route capacity, and appliance type.
(310) 448-6692 Book a Repair