

Bertazzoni induction cooktop
showing ER21
A temperature sensor under the touch interface has read more than 85 °C (185 °F), and the cooktop shuts down completely.
Mon–Sat, 8am–8pm
- Temperature and overheat sensors
- Induction board and coil repair
- Source: Bertazzoni
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Three short steps, about a minute.
or call (844) 252-4077
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What ER21
actually means.
A temperature sensor under the touch interface has read more than 85 °C (185 °F), and the cooktop shuts down completely. Bertazzoni gives two routes to it: a hot pan or lid set down on the interface, and heat building up under the controls.
Bertazzoni cooktop display
What to do when ER21 shows on the cooktopKind of codeTemperature and overheat sensors
A sensor under the glass or on a board reported a reading the control rejected, or heat climbing past the safe limit — often after an empty pan was left on a zone. The zone is allowed to cool and a loose sensor plug is ruled out before the sensor, the coil assembly or the board is blamed. A top that keeps getting hotter is switched off at the breaker first.
Usually leads toInduction board and coil repair
Induction zones that stop sensing pans, cut out, buzz or show codes, traced to the power boards, the coils, their sensors and the links to the controls.
Shows up asCooktop Controls Unresponsive
Touch keys or a slider do nothing, the display lights but ignores every press, or a knob turns without starting its burner or element.
MakeBertazzoni
An Italian maker whose US catalog lists drop-in gas cooktops, induction cooktops and pro-style rangetops.
SourceBertazzoni TFT induction cooktop user manual (PE304T*, PE365T*)
Bertazzoni induction cooktops with the TFT display interface, models PE304T* and PE365T*. The XV series and the induction downdraft cooktop have manuals of their own, which were not read for this code.
Before you book,
in this order.
Each step comes from Bertazzoni's own guidance for ER21 on its cooktops. Follow it to the end: the last card says whether this is a visit.
Take any hot pan or lid off the control area and let the cooktop cool.
Switch it on again once it has cooled; Bertazzoni says the code clears when the temperature drops back down.
If ER21 keeps returning without anything hot on the controls, book a visit so the insulation and cooling under the interface can be checked.
Still there?
It usually turns into induction board and coil repair. Book with the code and the model number.
What not to do
ER21 does not mean a cooking zone has failed. It is about the temperature at the control strip, not the coils under your pans.
What you may
notice with it.
The cooktop problems ER21 tends to arrive with. Answer these at the cooktop before anyone is booked.
All problems
Cooktop Controls Unresponsive
5 causes, cheapest first
Where ER21 usually leads
Induction board and coil repair.
Bertazzoni
cooktops.
An Italian maker whose US catalog lists drop-in gas cooktops, induction cooktops and pro-style rangetops.
Bertazzoni cooktop repair
Gas cooktop
A gas cooking surface dropped into a countertop cutout, with its gas line and power cord running down into the cabinet underneath.
Induction cooktop
A glass cooktop in the counter that heats the pan itself through magnetic coils, run by power boards and cooled by a fan underneath.
Rangetop
A pro-style gas cooking top with its knobs across the front, set into a notch above a base cabinet, often with a griddle or char-broiler beside the burners.
In Bertazzoni's own words
the user interface has detected a temperature >85°C
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Bertazzoni induction cooktops with the TFT display interface, models PE304T* and PE365T*. The XV series and the induction downdraft cooktop have manuals of their own, which were not read for this code.
Bertazzoni ER21 cooktop repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about ER21.
Can I clear ER21 myself?
Why does ER21 appear when I slide a hot lid toward the front of my Bertazzoni cooktop?
How long should I wait after ER21 before switching the cooktop back on?
Why does my Bertazzoni PE365T show ER21 when nothing hot is near the keys?
Back to your everyday
Still showing ER21?
Book with the code copied exactly, the full model number, and whether there is any smell of gas or burning — with a code in hand, that is where the diagnosis starts.