

Fontana Forni Er3: the Volta pizza oven chamber passed its temperature limit
The Volta modulates its flame to hold the temperature you set.
Mon–Sat, 8am–8pm
- Temperature and sensors
- Pizza oven thermostat and control repair
- Source: Fontana Forni
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What Er3
actually means.
The Volta modulates its flame to hold the temperature you set. Er3 appears when the chamber climbs past 500°C (932°F), and Fontana's explanation is a valve that is not modulating the flame as it should, so the burner keeps firing harder than asked.
Fontana Forni pizza oven display · also shown as ER3
What to do when Er3 shows on the pizza ovenKind of codeTemperature and sensors
A probe is handing the controller a reading it cannot believe, or none at all: a deck or tunnel sensor coated in baked-on flour and grease, its lead chafed or scorched where it passes the heat, or a connector loosened by years of doors slamming. The oven then runs hot, stalls short of its setting or shuts the heat off to protect itself. Letting the oven cool and restarting it is reasonable; a sensor that still reads wrong sits behind a panel, and that is a visit.
Usually leads toPizza oven thermostat and control repair
Thermostats calibrated or replaced, probes, timers, boards and displays repaired, so the pizza oven holds the temperature the cooks set and shows the right number.
Shows up asPizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display
A pizza oven error code shows as letters or numbers on the display of a conveyor, deck or rapid-cook oven, a flashing light on its panel, or a message about ignition, heat, belt or airflow.
MakeFontana Forni
A Fontana Forni visit leaves time for the door and the dial thermometer, two small parts that decide whether an owner trusts the fire at all.
SourceFontana Forni Volta 70 and 90 manual, USA and Canada edition, troubleshooting error code table
Volta 70 and Volta 90 smart gas ovens, USA and Canada manual. The limit is printed as 500° (932°F).
Before you book,
in this order.
Each step comes from Fontana Forni's own guidance for Er3 on its pizza ovens. Follow it to the end: the last card says whether this is a visit.
Hold the power button for three seconds to switch the oven off, then close the valve on the propane cylinder.
Keep people and pets back while the oven cools, and do not pour water into the chamber or onto the floor stones.
Note the temperature you had set and how long the oven had been heating when Er3 appeared, so the technician can compare it with the valve's behavior.
Book a visit before using the oven again; Fontana's fix is checking the valve wiring or replacing the valve.
Still there?
It usually turns into pizza oven thermostat and control repair. Book with the code and the model number.
What not to do
Er3 is not a mistaken reading from an unplugged probe, which shows Er1. It is also the opposite of Er4, which reports a chamber that stays too cool.
What you may
notice with it.
The pizza oven problems Er3 tends to arrive with. Answer these at the pizza oven before anyone is booked.
All problemsWhere Er3 usually leads
Pizza oven thermostat and control repair.
Fontana Forni
pizza ovens.
A Fontana Forni visit leaves time for the door and the dial thermometer, two small parts that decide whether an owner trusts the fire at all.
Fontana Forni pizza oven repair
Outdoor gas pizza oven
A stainless pizza oven on a counter, a cart or set into masonry, fired by propane or natural gas under a stone floor and a low insulated dome.
Wood-fired pizza oven
A refractory dome over a firebrick or cast hearth, fired with wood and often a gas burner too, with a chimney, a door and thick insulation around it.
In Fontana Forni's own words
Too high temp inside the oven, the temperature oven 500° (932°F).
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Volta 70 and Volta 90 smart gas ovens, USA and Canada manual. The limit is printed as 500° (932°F).
Fontana Forni Er3 pizza oven 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 Er3.
Can I clear Er3 myself?
Is Er3 on my Fontana Volta dangerous?
Can I set my Volta lower to avoid Er3?
Why did my Fontana Volta show Er3 after a long preheat with the door shut?
Back to your everyday
Still showing Er3?
A booking with a code goes further when it has the code copied as shown, the model and serial from the rating plate, and a note on whether the oven still lights, heats or moves its belt. With those three, the office can match the likely part to your oven the same day.