Whirlpool Cooktop U — What It Means & How to Fix It

Also shown as u on some models.

By Callum Griffin · Researched and verified against manufacturer and repair documentation · Reviewed September 2026

U means no pan is detected — or on induction, that the pot is unsuitable, off-centre or the wrong size; on some models U also shows when Keep Warm is on.

What this code means

Whirlpool says U indicates no pan detected, that the Keep Warm function is on, or a problem with the electrical power supply. On induction cooktops the symbol appears if the pot is not suitable for induction, not positioned correctly, or not an appropriate size; if no pot is detected within 30 seconds the zone switches off.

Whirlpool electric and induction cooktops.

Most likely causes

CauseHow likelyDIY-fixable?
No pan on the zone Very common Yes — no tools
Non-magnetic pan on induction Very common Yes — change pan
Pan off-centre or too small Common Yes — reposition
Keep Warm active Common Yes — no action

What you can try yourself

  1. Place a pan on the zone, centred.
  2. On induction, test the pan with a magnet — it must stick to the base.
  3. Use a pan that matches the zone size.
  4. If U shows with good cookware, reset power for one minute.

When to call a technician

Typical professional repair cost: Free; induction-ready cookware if needed.

Frequently asked questions

What does U mean on a Whirlpool cooktop?

No pan detected, or an unsuitable or badly placed pot on induction; it can also show Keep Warm.

How do I test a pan for induction?

Use a magnet to check the pot is magnetic.

How long before the zone switches off?

30 seconds without a detected pot.

Sources checked

Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.

Related Whirlpool codes

More: all Whirlpool cooktop codes · all Whirlpool codes · search by symptom