Bertazzoni P304IAE Induction Cooktop Code U: No pan or inadequate pan

What U means

On Bertazzoni legacy induction cooktops such as the P304IAE and P365IAE, the letter U on the display means no pan detection: there is no pan on the zone, or the pan is inadequate for induction. The zone will not heat until the cooktop senses suitable cookware, and you will see U where the power level would normally appear. Pans that are too small or not magnetic are the usual cause.

Common causes of U

No pan on the zone
Pan too small for the zone
Cookware that is not magnetic
Pan with a warped or uneven bottom

✓ One safe check you can try

1. Turn the zone off. 2. Place a flat-bottomed magnetic pan in the middle of the zone. 3. Test the pan with a magnet. If it does not stick, choose another pan. 4. Turn the zone on again. 5. If U shows with a known good pan, call us.

! Why to stop there

Most cases are the pan, not the cooktop.
The coil under the glass cannot be checked without taking the cooktop out.
Aluminum or glass cookware will never work on an induction zone.
If a good pan still gives U, we test the zone and quote in writing first.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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UU questions

What does U mean on my induction cooktop?

It means the cooktop does not detect a suitable pan on the zone. Either no pan is there, or the one you placed is not right for induction.

Will any pan work?

No. The pan must be magnetic and reasonably flat, and large enough to cover the zone mark. Aluminum, copper and glass pans without a magnetic base will give U.

When is U a sign of a real problem?

If a magnetic, flat pan centered on the zone still shows U on every zone, call us. The sensing under the glass would need to be tested.