Fontana Forni Er4: the Volta pizza oven reads too cool for five minutes
After lighting, the Volta expects its chamber probe to see the temperature rise.
Mon–Sat, 8am–8pm
- Temperature and sensors
- Pizza oven thermostat and control repair
- Source: Fontana Forni
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What Er4
actually means.
After lighting, the Volta expects its chamber probe to see the temperature rise. If the reading stays under 43°C (110°F) for more than five minutes, it shows Er4. Fontana's cause is a probe that is no longer in its proper position inside the cooking chamber, so it is reading air or metal away from the heat.
Fontana Forni pizza oven display · also shown as ER4
What to do when Er4 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 threshold is printed as 43°C (110°F) for more than five minutes.
Before you book,
in this order.
Each step comes from Fontana Forni's own guidance for Er4 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 clear the code and switch off.
When the oven is cold, check whether the probe inside the chamber has been pushed back, bent or pulled from its mount.
Before the next try, watch the flame icon: it should turn steady within ten seconds, which tells you the burner itself is lit.
If the probe has moved and cannot simply be set back in its mount, book a visit to have it repositioned and secured.
Still there?
It usually turns into pizza oven thermostat and control repair. Book with the code and the model number.
What not to do
Er4 does not report an empty tank; gas running out during cooking shows Er6. It is also not the missing-probe message Er1, which means the probe cannot be read at all.
What you may
notice with it.
The pizza oven problems Er4 tends to arrive with. Answer these at the pizza oven before anyone is booked.
All problems
Where Er4 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
The temperature inside the oven below 43°C (110°F) for more than five minutes.
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 threshold is printed as 43°C (110°F) for more than five minutes.
Fontana Forni Er4 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 Er4.
Can I clear Er4 myself?
My Volta flame is lit but it still shows Er4. How?
Can cold weather cause Er4 on a Fontana Volta?
How does the Er4 probe on a Volta get moved?
Back to your everyday
Still showing Er4?
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.