VERIFIED
At the top of the dial
Pizza at the highest setting, a sear before roasting, a hot preheat for sourdough in a covered pot. These push the oven to its upper limit and keep it there. The reports for E33 tend to cluster at that end of the range.
The code has no confirmed definition, so we describe the setting and not a part. What can be said is that long runs at the highest setting work every heating part hard, so the circumstances in which the code appears matter more than the digits.
How the evening goes
The stone goes in, the oven climbs steadily past 450 and hovers near its limit, and E33 appears just as the first pizza is ready to go in. Heat stops, the stone cools and the evening is lost. Sometimes the code shows only after the oven has held the top temperature for fifteen or twenty minutes.
Why the upper range is demanding
- Elements run nearly continuously.
- Relays carry maximum current for a long period.
- The sensor works at the end of its range, where small errors matter.
- Heat around the control and cabinet rises sharply.
First assemblies examined
The cavity sensor and its readings at high heat, the bake element and its terminals, the main relays, and the control compartment’s cooling path. The technician will test at the high setting, so a short test at 350 will not tell the story. A relay is the switch that sends power to the element, and at high heat it carries a heavier load for longer, which is why it is among the first checks.
What you can do
- Note the set temperature and how many minutes it was held when E33 appeared.
- Run a plain bake at 400 and see whether the oven behaves.
- Leave the stone out for the test, since it slows heating and clouds the picture.
If the oven is only trouble at the top end, cook below that temperature until it has been examined. A stone in a hot oven can crack, so handle it with care.
Why a technician is needed
High-temperature faults involve high-current parts and near-limit sensors, which can only be tested properly with measuring equipment. The visit starts with diagnosis, a written estimate follows and you approve any part before it is fitted.
Alternatives while you wait
A cast iron pan on a hot burner, a covered pot at a slightly lower temperature, or a grill can fill the gap for pizza night. The aim is to avoid pushing a questionable oven back to its limit while the reason for E33 remains unknown.
Frequently asked questions
Without a confirmed definition we cannot say, but the pattern of appearing near the upper range is worth reporting.
It slows warm-up and loads the oven, so remove it for a test.
If the oven heats correctly at ordinary temperatures, yes.
The fault may only appear when the oven is pushed near its limit.
Model compatibility: Bertazzoni reuses codes across series and model years, so E33 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
