Bertazzoni Cooktop E31 Error Code

E31 in daily use

Evening routines overlap. A sauce simmers while the first load of dishes goes in the dishwasher, and the dishwasher’s heating phase begins just then. Right at that moment the cooktop stops a zone and shows E31. Without the dishwasher, the same cooking carries on. Spotting an overlap like this takes only a little attention, and it saves a lot of searching. The timing matters because a supply dip lasts only as long as the other appliance is heating.

Heated dry cycles and heating phases both draw a lot, so a new dishwasher can change the picture even if the old one never caused trouble.

A neat test is to run only the dishwasher’s heated phase while the cooktop sits idle, then reverse it. The notes you take, however short, let us tell whether the dip belongs to the supply or to the cooktop. Small kitchens with one shared countertop circuit feel this most, and so do homes where a dishwasher was upgraded without anyone looking at the wiring. Share the dishwasher’s age if you know it, along with the last time any electrical work was done in the kitchen.

Checks that are safe for an owner

• Start the dishwasher before cooking or after, so the two do not heat together, and see whether E31 disappears.
• Look at which circuits the kitchen breakers label for the dishwasher and the cooktop.
• Notice whether lights flicker when the dishwasher begins heating.
• Notice whether the code appears at the same point in the heating phase every time.

Meaning of the code

We do not treat E31 as having a single confirmed definition for every Bertazzoni cooktop, because generations differ. The overlap with another heavy appliance is the useful finding. On a model that reports supply conditions with this code it would fit, and the model number tells us whether that is the case.

Inside checks start with

The supply side is first, meaning the breaker serving the cooktop, the connections at the junction and the incoming voltage when other loads start. Then the cooktop’s own tolerance is checked, since a healthy control copes with ordinary dips and a weak one does not. On a model that monitors the incoming supply, a dip that other appliances ignore could be enough to stop a zone.

Technician or not

If separating the loads solves it, the cooktop may be reacting to a supply that sags more than it should, and an electrician can look at the circuit. If E31 occurs with the dishwasher off, our technician checks the cooktop itself. Either way, the work with live supply is not for owners.

Frequently asked questions

Model-dependent fault code