Written by
Julian Reed Appliance Care EditorPublished September 2, 2026Updated October 17, 2026
Content status:
Verified
Error codeE3
ApplianceCooktop
Quick answer
E3 means the induction hob has detected a supply voltage that is too high.
Model compatibility: Bertazzoni reuses codes across series and model years, so E3 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
E3 is listed as an abnormal supply voltage, too high, on Bertazzoni induction hobs.
Meaning of E3
The code does not describe heat. Bertazzoni’s induction hob manual lists E3 as an abnormal supply voltage, on the high side, meaning the electricity arriving at the hob is above what it accepts. The hob goes into protection instead of running on it.
The instruction
The table asks for two things in a fixed order: inspect whether the power supply is normal, and only then power on.
How to measure the supply is not explained.
There is no guidance for a supply that is found to be abnormal.
Work for a professional
Testing the supply, opening a junction box and touching the wiring all belong to a qualified electrician or technician. Bertazzoni also tells owners not to take the hob apart. If E3 appears again, leave the hob unused and get in touch.
Short answers
Is there a different reset? No other one is listed.
Is a part broken? The entry describes the incoming power rather than a part.
Related
E4: the low-voltage twin of this code, with identical instructions
E2: heat in the hob electronics rather than a power problem
Before you call
Look at the hob and at the rest of the kitchen. The entry points to the supply reaching the hob, so any sign that other circuits are acting up is worth passing on. Keep the code, the hob model and what you noticed together; that is all the manual leaves to an owner here.
Electrical fault repair in Los Angeles
If a Bertazzoni cooktop in the Los Angeles area throws a supply voltage code, ring (310) 987-4514. It helps to have the model number and the exact code at hand, and the cooktop repair page shows what we handle.
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 Bertazzoni appliance?
Book a specialist visit for a clear estimate and approval before any repair.