--- title: "Pizza Oven Error Codes — What They Mean" description: "What a code on a pizza oven's display means: a cool-down, energy save or menu lock that only looks like trouble, or an ignition, sensor, element, belt drive…" url: "https://pizzaovenrepair.center/error-codes/" --- Error codes # Pizza oven error codes, read properly. A code narrows the search and is also the thing most often read wrong: the same characters mean different things on different brands, and a fair number of the codes people look up are not failures at all — they are modes the appliance was left in. ## Find your code, make by make. Type the characters exactly as the display shows them, or pick the make. Each code has a page of its own: what it means on that brand, what to check, and what not to do. ### Middleby Marshall pizza oven error codes 16 codes - [RESET IGNITION Ignition and flame RESET IGNITION on an X-Series gas conveyor means the burner failed to light or would not stay lit, often because gas is off or pressure is low.](https://pizzaovenrepair.center/error-codes/middleby-marshall-reset-ignition/) - [HEATING ERROR Elements and heating HEATING ERROR with an alarm means an X-Series conveyor did not reach its set point within half an hour of starting.](https://pizzaovenrepair.center/error-codes/middleby-marshall-heating-error/) - [PROBE # OPEN Temperature and sensors PROBE # OPEN on an X-Series oven names one thermocouple that has gone open; the oven keeps baking on the others.](https://pizzaovenrepair.center/error-codes/middleby-marshall-probe-open/) - [HIGH TEMP ERROR Temperature and sensors Despite its name, HIGH TEMP ERROR means the oven has lost all of its temperature probes, not that it is overheating.](https://pizzaovenrepair.center/error-codes/middleby-marshall-high-temp-error/) - [FRONT BELT JAMMED Conveyor belt and drive FRONT BELT JAMMED means the control shut down the front belt of a split-belt conveyor because it was overloaded or blocked.](https://pizzaovenrepair.center/error-codes/middleby-marshall-front-belt-jammed/) - [REAR BELT JAMMED Conveyor belt and drive REAR BELT JAMMED is the rear-lane version of the belt stop: the second belt of a split conveyor was halted by overload or a blockage.](https://pizzaovenrepair.center/error-codes/middleby-marshall-rear-belt-jammed/) - [FRONT BELT COMM LOST Conveyor belt and drive BELT COMM LOST means the circuit breaker for one conveyor motor drive board has tripped; the oven keeps baking on the other belt.](https://pizzaovenrepair.center/error-codes/middleby-marshall-front-belt-comm-lost/) - [SENSOR OPEN Blowers and airflow SENSOR OPEN on an X-Series means the switch that proves the blowers are turning has not closed, and it comes with an alarm.](https://pizzaovenrepair.center/error-codes/middleby-marshall-sensor-open/) - [MAIN BLOWER ERROR Blowers and airflow MAIN BLOWER ERROR means the PS-series control could not confirm the main baking blower is running.](https://pizzaovenrepair.center/error-codes/middleby-marshall-main-blower-error/) - [Combustion Blower problem Ignition and flame On a PS640 gas oven this alert means the computer has found a problem with the burner blower that feeds air to the flame.](https://pizzaovenrepair.center/error-codes/middleby-marshall-combustion-blower-problem/) - [**00FF Controls and display **00FF on a PS638 screen means the display and the I/O board behind it have stopped talking to each other.](https://pizzaovenrepair.center/error-codes/middleby-marshall-00ff/) - [CLEAN FILTERS Blowers and airflow CLEAN FILTERS is the conveyor's reminder that the filters on its control cooling fans are blocked and need washing now.](https://pizzaovenrepair.center/error-codes/middleby-marshall-clean-filters/) - [CONTROL OVERTEMP Blowers and airflow CONTROL OVERTEMP says the compartment holding the oven's electronics has overheated, from stopped cooling fans or clogged filters.](https://pizzaovenrepair.center/error-codes/middleby-marshall-control-overtemp/) - [BELT OFF Mode, not a failure BELT OFF during warm-up is normal: the conveyor stays still until the oven reaches its working temperature.](https://pizzaovenrepair.center/error-codes/middleby-marshall-belt-off/) - [Energy Saving Mode Mode, not a failure Energy Saving Mode 1, 2 or 3 on a PS640 gas conveyor is normal operation: the oven has cut back because nothing has come through for a while.](https://pizzaovenrepair.center/error-codes/middleby-marshall-energy-saving-mode/) - [BAKING Mode, not a failure BAKING that comes and goes on a PS638 is the photo eye switching the oven between full and reduced blower speed.](https://pizzaovenrepair.center/error-codes/middleby-marshall-baking/) [Middleby Marshall pizza oven repair](https://pizzaovenrepair.center/brands/middleby-marshall/) ### TurboChef pizza oven error codes 12 codes - [F1 Blowers and airflow F1 means the control has lost proof that the air blower is turning, and a break in power is the first thing TurboChef suspects.](https://pizzaovenrepair.center/error-codes/turbochef-f1/) - [F2 Temperature and sensors F2 means the cook chamber dropped too far below the set point during a bake, from anything between too much product and a heater that has stopped working.](https://pizzaovenrepair.center/error-codes/turbochef-f2/) - [F5 Temperature and sensors F5 is the cook chamber overheat report on the High h Conveyor, and blocked airflow into the oven is the cause the owner can fix.](https://pizzaovenrepair.center/error-codes/turbochef-f5/) - [F6 Blowers and airflow F6 says the side of the oven that holds the controls is getting too warm, most often because its cooling air is blocked.](https://pizzaovenrepair.center/error-codes/turbochef-f6/) - [F7 Temperature and sensors F7 means the control no longer trusts the RTD, the resistance sensor that reads the cook chamber temperature.](https://pizzaovenrepair.center/error-codes/turbochef-f7/) - [F8 Temperature and sensors F8 means the separate high-limit thermostat opened because the oven got too hot, and TurboChef names a dirty oven as the usual reason.](https://pizzaovenrepair.center/error-codes/turbochef-f8/) - [F9 Conveyor belt and drive F9 means the belt stopped or could not turn, from too much weight, something wedged in the cavity or an overheated drive.](https://pizzaovenrepair.center/error-codes/turbochef-f9/) - [Oven Door Open Mode, not a failure Oven Door Open with an alarm means the Single Batch reads its cooking door as open, whether it is or not.](https://pizzaovenrepair.center/error-codes/turbochef-oven-door-open/) - [Er1 Controls and display Er1 on the countertop Fire, like its neighbors Er2 and Ht, means a component has failed and the oven needs service.](https://pizzaovenrepair.center/error-codes/turbochef-er1/) - [COOLING DOWN Mode, not a failure COOLING DOWN is a normal stage after the oven is turned off; the heat stays off and the fans keep running until the oven has cooled.](https://pizzaovenrepair.center/error-codes/turbochef-cooling-down/) - [OVEN IDLE Mode, not a failure OVEN IDLE on an HhC conveyor means the blowers have dropped to 30 percent and the belt has slowed, on purpose, between rushes.](https://pizzaovenrepair.center/error-codes/turbochef-oven-idle/) - [SOAKING Mode, not a failure SOAKING with a five-minute countdown is the normal step between warm-up and cooking on an HhC conveyor.](https://pizzaovenrepair.center/error-codes/turbochef-soaking/) [TurboChef pizza oven repair](https://pizzaovenrepair.center/brands/turbochef/) ### Wood Stone pizza oven error codes 12 codes - [chec Ignition and flame A flashing chec (or check) means the controller asked the underfloor infrared burner for heat and the burner never proved its flame.](https://pizzaovenrepair.center/error-codes/wood-stone-chec/) - [open Temperature and sensors The word open in the temperature window means the controller has lost its floor thermocouple.](https://pizzaovenrepair.center/error-codes/wood-stone-open/) - [PROB Temperature and sensors PROB on an older push-button Wood Stone controller means the hearth thermocouple circuit is open.](https://pizzaovenrepair.center/error-codes/wood-stone-prob/) - [FAIL Controls and display FAIL on a Type 1 Wood Stone controller points at the temperature control module itself.](https://pizzaovenrepair.center/error-codes/wood-stone-fail/) - [EEE Temperature and sensors EEE, or numbers that jump about, on a Wood Stone temperature readout means the readout and its thermocouple are not talking properly.](https://pizzaovenrepair.center/error-codes/wood-stone-eee/) - [LO Mode, not a failure LO is a normal reading on a Type 4 Wood Stone controller whenever the floor is colder than 100 °F.](https://pizzaovenrepair.center/error-codes/wood-stone-lo/) - [System Error! Temperature and sensors A System Error! message on a Mountain Home or Traditional Home touchscreen means the controller cannot find its thermocouple.](https://pizzaovenrepair.center/error-codes/wood-stone-system-error/) - [RADIANT BURNER FAILED Ignition and flame An alarm pop-up reading BURNERS SHUTDOWN and RADIANT BURNER FAILED means the dome burner did not light after START.](https://pizzaovenrepair.center/error-codes/wood-stone-radiant-burner-failed/) - [Red over-temperature light Temperature and sensors A red light under the temperature readout, with every burner out, means the over-temperature limit has tripped.](https://pizzaovenrepair.center/error-codes/wood-stone-red-over-temperature-light/) - [All indicator lights flashing Temperature and sensors When all the lights on the lower control panel of an AMP Series 64 deck flash, its safety thermostat has tripped.](https://pizzaovenrepair.center/error-codes/wood-stone-all-indicator-lights-flashing/) - [ECONOMY light Mode, not a failure A red LED at the ECONOMY button on an AMP Series 64 deck means the economy function is running and the top and bottom elements take turns.](https://pizzaovenrepair.center/error-codes/wood-stone-economy-light/) - [Cook buttons flashing red Mode, not a failure On the FA-9660 Fire Deck Automatic, cook buttons flashing red mean the oven is above its set point.](https://pizzaovenrepair.center/error-codes/wood-stone-cook-buttons-flashing-red/) [Wood Stone pizza oven repair](https://pizzaovenrepair.center/brands/wood-stone/) ### Fontana Forni pizza oven error codes 11 codes - [Er1 Temperature and sensors Er1 on a Volta means the controller no longer gets a reading from the K-type probe that measures the cooking chamber.](https://pizzaovenrepair.center/error-codes/fontana-forni-er1/) - [Er2 Ignition and flame Er2 means the Volta tried to light its burner and saw no flame within the ten-second ignition window.](https://pizzaovenrepair.center/error-codes/fontana-forni-er2/) - [Er3 Temperature and sensors Er3 means the chamber of a Volta went above 500°C (932°F), which Fontana blames on a gas valve that is not turning the flame down.](https://pizzaovenrepair.center/error-codes/fontana-forni-er3/) - [Er4 Temperature and sensors Er4 means the Volta has read a chamber below 43°C (110°F) for more than five minutes while it should be heating.](https://pizzaovenrepair.center/error-codes/fontana-forni-er4/) - [Er 5 Power Er 5 means the power reaching the Volta is not the 12 volts DC at 5 amps its controller expects.](https://pizzaovenrepair.center/error-codes/fontana-forni-er5/) - [Er6 Ignition and flame Er6 means the Volta's burner was lit and then lost its flame during cooking.](https://pizzaovenrepair.center/error-codes/fontana-forni-er6/) - [Er7 Ignition and flame Er7 means the wire to the Volta's solenoid gas valve came loose or broke while the oven was on.](https://pizzaovenrepair.center/error-codes/fontana-forni-er7/) - [Er8 Ignition and flame Er8 means the Volta's spark igniter has lost its power wires or has stopped working.](https://pizzaovenrepair.center/error-codes/fontana-forni-er8/) - [noP Mode, not a failure noP in a meat-probe window of the Volta display simply means nothing is plugged into that probe port.](https://pizzaovenrepair.center/error-codes/fontana-forni-nop/) - [Flashing flame icon Mode, not a failure A flashing flame icon on the Volta display means the burner is in its ten-second ignition attempt; a steady icon means it is lit.](https://pizzaovenrepair.center/error-codes/fontana-forni-flashing-flame-icon/) - [Flashing Wi-Fi indicator Mode, not a failure A flashing Wi-Fi symbol on the Volta means the oven is not connected to any Wi-Fi network; it turns steady once connected.](https://pizzaovenrepair.center/error-codes/fontana-forni-flashing-wi-fi-indicator/) [Fontana Forni pizza oven repair](https://pizzaovenrepair.center/brands/fontana-forni/) ### Marra Forni pizza oven error codes 3 codes - [Open Temperature and sensors When the MarraSmart display reads Open, the control is not getting a signal from the oven's thermocouple.](https://pizzaovenrepair.center/error-codes/marra-forni-open/) - [Day 1 of 5 (curing screen) Mode, not a failure A MarraSmart screen showing Day and a number out of 5 means the oven is in its automatic five-day curing process, not cooking mode.](https://pizzaovenrepair.center/error-codes/marra-forni-day-of-5/) - [High/Low flame indicator Mode, not a failure The High/Low flame lights on the MarraSmart manual-mode screen show whether the burners are firing on high or low flame.](https://pizzaovenrepair.center/error-codes/marra-forni-high-low-flame-indicator/) [Marra Forni pizza oven repair](https://pizzaovenrepair.center/brands/marra-forni/) ### Alfresco pizza oven error codes 2 codes - [Igniter keeps glowing after the burner lights Mode, not a failure A yellow-white glow from the spiral igniter while an Alfresco pizza oven burner is lit is normal; it stays on so the burner can relight itself.](https://pizzaovenrepair.center/error-codes/alfresco-igniter-glows-while-lit/) - [No igniter glow within 5 to 10 seconds Ignition and flame An Alfresco pizza oven igniter should glow yellow-white within 5 to 10 seconds of turning a knob to MAX; no glow means it is not getting power or has failed.](https://pizzaovenrepair.center/error-codes/alfresco-no-igniter-glow/) [Alfresco pizza oven repair](https://pizzaovenrepair.center/brands/alfresco/) ### Blodgett pizza oven error codes 2 codes - [LOAD Mode, not a failure LOAD on a Blodgett 1415 countertop deck oven is a prompt in the normal sequence, not a warning.](https://pizzaovenrepair.center/error-codes/blodgett-load/) - [DONE Mode, not a failure DONE with a buzzer on a Blodgett 1415 countertop deck means the set cook time has finished.](https://pizzaovenrepair.center/error-codes/blodgett-done/) [Blodgett pizza oven repair](https://pizzaovenrepair.center/brands/blodgett/) ### Kalamazoo pizza oven error codes 2 codes - [No clicking, or slow or faint clicking Ignition and flame When the electronic ignition button on a Kalamazoo Artisan Fire pizza oven gives no click, or a slow or faint one, the ignition battery is low.](https://pizzaovenrepair.center/error-codes/kalamazoo-slow-or-no-clicking/) - [Rapid clicking but the burner does not light Ignition and flame Fast clicking without a flame on a Kalamazoo Artisan Fire pizza oven means the spark is fine and gas is the next question.](https://pizzaovenrepair.center/error-codes/kalamazoo-rapid-clicking-no-flame/) [Kalamazoo pizza oven repair](https://pizzaovenrepair.center/brands/kalamazoo/) ### Lynx pizza oven error codes 2 codes - [Igniters do not glow with the knob pushed in Ignition and flame On a Lynx Napoli the igniters should glow steadily while a knob is held in; a cold, dark igniter means the burner has nothing to light it.](https://pizzaovenrepair.center/error-codes/lynx-no-igniter-glow/) - [Oven lights stay dark Power Lynx uses the Napoli's interior lights as the quick test for power, so lights that will not come on point to the supply, the transformer or a bulb.](https://pizzaovenrepair.center/error-codes/lynx-oven-lights-dark/) [Lynx pizza oven repair](https://pizzaovenrepair.center/brands/lynx/) ### Only confirmed codes Every code here is taken from the manufacturer's own documentation, never from a forum or a parts listing. If yours is not listed, book with the exact characters and the full model number, and we will tell you whether it is one we take. ## Three things before you look it up. A code is a lead, not a verdict. These decide whether the answer you find will be any use. 01 ### Copy the code as it appears The code, the message or the blinking light, exactly as shown. Photograph it, because switching the oven off at the breaker can wipe it. 02 ### Photograph the rating plate Inside the lower access panel of a deck oven, near the control box of a conveyor, on the back of a rapid-cook oven. One code can point to a probe on one make and a blower on another. 03 ### Gas, fire, smoke or only heat? If you smell gas, see flame outside the mouth, notice a burning smell or have smoke in the room, shut the gas or the breaker and book today. A code on an oven that still bakes evenly can wait for a regular appointment. ## What each kind of code means. Codes fall into a handful of families. The family says more about the likely repair than the characters do — and one of them is not a repair at all. [How to read a code](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Mode, not a failure 18 codes No part of the oven has failed; the display is reporting a state someone chose or the oven entered on its own. A cool-down keeps the blowers turning after the heat is off until the cavity or the tunnel has dropped to a safe level, an energy save setting lets the decks sag between rushes, and a menu lock stops anyone on the line from changing the bake times. No part is needed: letting the cool-down run out, or the key sequence in the manual, brings the oven back. [Igniter keeps glowing after the burner lights](https://pizzaovenrepair.center/error-codes/alfresco-igniter-glows-while-lit/) [LOAD](https://pizzaovenrepair.center/error-codes/blodgett-load/) [DONE](https://pizzaovenrepair.center/error-codes/blodgett-done/) [noP](https://pizzaovenrepair.center/error-codes/fontana-forni-nop/) [Flashing flame icon](https://pizzaovenrepair.center/error-codes/fontana-forni-flashing-flame-icon/) [Flashing Wi-Fi indicator](https://pizzaovenrepair.center/error-codes/fontana-forni-flashing-wi-fi-indicator/) [Day 1 of 5 (curing screen)](https://pizzaovenrepair.center/error-codes/marra-forni-day-of-5/) [High/Low flame indicator](https://pizzaovenrepair.center/error-codes/marra-forni-high-low-flame-indicator/) [BELT OFF](https://pizzaovenrepair.center/error-codes/middleby-marshall-belt-off/) [Energy Saving Mode](https://pizzaovenrepair.center/error-codes/middleby-marshall-energy-saving-mode/) [BAKING](https://pizzaovenrepair.center/error-codes/middleby-marshall-baking/) [Oven Door Open](https://pizzaovenrepair.center/error-codes/turbochef-oven-door-open/) [COOLING DOWN](https://pizzaovenrepair.center/error-codes/turbochef-cooling-down/) [OVEN IDLE](https://pizzaovenrepair.center/error-codes/turbochef-oven-idle/) [SOAKING](https://pizzaovenrepair.center/error-codes/turbochef-soaking/) [LO](https://pizzaovenrepair.center/error-codes/wood-stone-lo/) [ECONOMY light](https://pizzaovenrepair.center/error-codes/wood-stone-economy-light/) [Cook buttons flashing red](https://pizzaovenrepair.center/error-codes/wood-stone-cook-buttons-flashing-red/) Usually leads to No repair — the setting is changed back Shows up as [Pizza Oven Not Getting Hot Enough to Bake a Crisp Crust](https://pizzaovenrepair.center/problems/pizza-oven-not-getting-hot/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Ignition and flame 12 codes The oven tried to light its burner and never proved a flame, or proved one and then lost it. The usual reasons are ordinary: a gas shutoff not fully open or a tank running dry, an igniter cracked or crusted with flour dust, a flame sensor or thermocouple that no longer reads the heat, or a draft that pulls the pilot away from it. Checking the shutoff and the tank and running the restart the manual names are fair first steps; if you smell gas, get outside first, and the valve, the sensor and every fitting stay with a technician. [No igniter glow within 5 to 10 seconds](https://pizzaovenrepair.center/error-codes/alfresco-no-igniter-glow/) [Er2](https://pizzaovenrepair.center/error-codes/fontana-forni-er2/) [Er6](https://pizzaovenrepair.center/error-codes/fontana-forni-er6/) [Er7](https://pizzaovenrepair.center/error-codes/fontana-forni-er7/) [Er8](https://pizzaovenrepair.center/error-codes/fontana-forni-er8/) [No clicking, or slow or faint clicking](https://pizzaovenrepair.center/error-codes/kalamazoo-slow-or-no-clicking/) [Rapid clicking but the burner does not light](https://pizzaovenrepair.center/error-codes/kalamazoo-rapid-clicking-no-flame/) [Igniters do not glow with the knob pushed in](https://pizzaovenrepair.center/error-codes/lynx-no-igniter-glow/) [RESET IGNITION](https://pizzaovenrepair.center/error-codes/middleby-marshall-reset-ignition/) [Combustion Blower problem](https://pizzaovenrepair.center/error-codes/middleby-marshall-combustion-blower-problem/) [chec](https://pizzaovenrepair.center/error-codes/wood-stone-chec/) [RADIANT BURNER FAILED](https://pizzaovenrepair.center/error-codes/wood-stone-radiant-burner-failed/) Usually leads to [Pizza oven burner and igniter repair](https://pizzaovenrepair.center/services/pizza-oven-burner-and-igniter-repair/) Shows up as [Gas Pizza Oven Won't Light: Clicks, Gas Hiss, Still No Flame](https://pizzaovenrepair.center/problems/pizza-oven-wont-light/) [Pizza Oven Pilot Won't Stay Lit Once the Knob Is Released](https://pizzaovenrepair.center/problems/pizza-oven-pilot-wont-stay-lit/) [Pizza Oven Gas Smell Near the Burner or Supply Line: Act First](https://pizzaovenrepair.center/problems/pizza-oven-gas-smell/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Temperature and sensors 16 codes 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. [Er1](https://pizzaovenrepair.center/error-codes/fontana-forni-er1/) [Er3](https://pizzaovenrepair.center/error-codes/fontana-forni-er3/) [Er4](https://pizzaovenrepair.center/error-codes/fontana-forni-er4/) [Open](https://pizzaovenrepair.center/error-codes/marra-forni-open/) [PROBE # OPEN](https://pizzaovenrepair.center/error-codes/middleby-marshall-probe-open/) [HIGH TEMP ERROR](https://pizzaovenrepair.center/error-codes/middleby-marshall-high-temp-error/) [F2](https://pizzaovenrepair.center/error-codes/turbochef-f2/) [F5](https://pizzaovenrepair.center/error-codes/turbochef-f5/) [F7](https://pizzaovenrepair.center/error-codes/turbochef-f7/) [F8](https://pizzaovenrepair.center/error-codes/turbochef-f8/) [open](https://pizzaovenrepair.center/error-codes/wood-stone-open/) [PROB](https://pizzaovenrepair.center/error-codes/wood-stone-prob/) [EEE](https://pizzaovenrepair.center/error-codes/wood-stone-eee/) [System Error!](https://pizzaovenrepair.center/error-codes/wood-stone-system-error/) [Red over-temperature light](https://pizzaovenrepair.center/error-codes/wood-stone-red-over-temperature-light/) [All indicator lights flashing](https://pizzaovenrepair.center/error-codes/wood-stone-all-indicator-lights-flashing/) Usually leads to [Pizza oven thermostat and control repair](https://pizzaovenrepair.center/services/pizza-oven-thermostat-and-control-repair/) Shows up as [Deck Oven Temperature Drifting Away From the Dial Setting](https://pizzaovenrepair.center/problems/deck-oven-temperature-drifting/) [Pizza Oven Not Getting Hot Enough to Bake a Crisp Crust](https://pizzaovenrepair.center/problems/pizza-oven-not-getting-hot/) [Pizza Oven Uneven Bake: Burnt Edge, Raw Middle, Pale Bottom](https://pizzaovenrepair.center/problems/pizza-oven-uneven-bake/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Elements and heating 1 code The controller called for heat and the deck or the cavity did not answer in time. On an electric deck oven that is often one element burned open under a stone, a contactor whose points have pitted, or a stone cracked so the heat no longer spreads; on a gas deck or conveyor it is a burner that lights but runs starved. Closing the door fully and giving the oven its full preheat rules out the simple case; an element, a contactor or a burner is a visit, and a burning smell means the breaker off first. [HEATING ERROR](https://pizzaovenrepair.center/error-codes/middleby-marshall-heating-error/) Usually leads to [Deck oven element and deck repair](https://pizzaovenrepair.center/services/deck-oven-element-and-deck-repair/) Shows up as [Pizza Oven Not Getting Hot Enough to Bake a Crisp Crust](https://pizzaovenrepair.center/problems/pizza-oven-not-getting-hot/) [Pizza Oven Uneven Bake: Burnt Edge, Raw Middle, Pale Bottom](https://pizzaovenrepair.center/problems/pizza-oven-uneven-bake/) [Deck Oven Temperature Drifting Away From the Dial Setting](https://pizzaovenrepair.center/problems/deck-oven-temperature-drifting/) [Burning or Hot Wiring Smell From an Electric Pizza Oven](https://pizzaovenrepair.center/problems/pizza-oven-burning-smell/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Conveyor belt and drive 4 codes The belt stopped, slowed or lost track of its speed. Sometimes a pan, a lid or a clump of burnt cheese has jammed the belt against the frame; more often the drive motor is worn, a coupling or a chain has slipped, or the speed sensor no longer reports what the belt is doing, so the bake time on the display stops matching the pies. Clearing the belt path once the oven is off and cold is a fair first step; a motor that hums without turning or a belt that has stretched out of true is a visit. [FRONT BELT JAMMED](https://pizzaovenrepair.center/error-codes/middleby-marshall-front-belt-jammed/) [REAR BELT JAMMED](https://pizzaovenrepair.center/error-codes/middleby-marshall-rear-belt-jammed/) [FRONT BELT COMM LOST](https://pizzaovenrepair.center/error-codes/middleby-marshall-front-belt-comm-lost/) [F9](https://pizzaovenrepair.center/error-codes/turbochef-f9/) Usually leads to [Conveyor oven belt and motor repair](https://pizzaovenrepair.center/services/conveyor-belt-and-motor-repair/) Shows up as [Conveyor Oven Belt Not Moving or Stopping Mid-Bake](https://pizzaovenrepair.center/problems/conveyor-belt-not-moving/) [Conveyor Oven Uneven Bake Across the Belt or From End to End](https://pizzaovenrepair.center/problems/conveyor-oven-uneven-bake/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Blowers and airflow 6 codes The air the oven bakes with is not moving as it should. In a conveyor or rapid-cook oven the impingement blower may be dragging on worn bearings, its fingers packed with grease so the jets fire unevenly, or its cooling fan clogged with flour dust until the controls overheat; a gas oven may also refuse to light when its combustion air switch never proves. Cleaning the intake filters and grilles with the oven off is safe; a blower that slows, squeals or smells hot is a visit. [SENSOR OPEN](https://pizzaovenrepair.center/error-codes/middleby-marshall-sensor-open/) [MAIN BLOWER ERROR](https://pizzaovenrepair.center/error-codes/middleby-marshall-main-blower-error/) [CLEAN FILTERS](https://pizzaovenrepair.center/error-codes/middleby-marshall-clean-filters/) [CONTROL OVERTEMP](https://pizzaovenrepair.center/error-codes/middleby-marshall-control-overtemp/) [F1](https://pizzaovenrepair.center/error-codes/turbochef-f1/) [F6](https://pizzaovenrepair.center/error-codes/turbochef-f6/) Usually leads to [Pizza oven blower and fan repair](https://pizzaovenrepair.center/services/pizza-oven-blower-and-fan-repair/) Shows up as [Conveyor Oven Uneven Bake Across the Belt or From End to End](https://pizzaovenrepair.center/problems/conveyor-oven-uneven-bake/) [Pizza Oven Not Getting Hot Enough to Bake a Crisp Crust](https://pizzaovenrepair.center/problems/pizza-oven-not-getting-hot/) [Burning or Hot Wiring Smell From an Electric Pizza Oven](https://pizzaovenrepair.center/problems/pizza-oven-burning-smell/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Controls and display 3 codes The controller itself reported trouble, or stopped answering: a display with missing segments, a keypad that no longer takes a press after steam or cleaner got behind it, a board whose relays stick, or saved bake settings that vanish overnight. A full power cycle at the breaker, done as the manual describes, clears a passing glitch; a code that returns, or any sign of moisture or scorching behind the panel, means a board or a keypad, and that is a visit. [**00FF](https://pizzaovenrepair.center/error-codes/middleby-marshall-00ff/) [Er1](https://pizzaovenrepair.center/error-codes/turbochef-er1/) [FAIL](https://pizzaovenrepair.center/error-codes/wood-stone-fail/) Usually leads to [Pizza oven thermostat and control repair](https://pizzaovenrepair.center/services/pizza-oven-thermostat-and-control-repair/) Shows up as [Deck Oven Temperature Drifting Away From the Dial Setting](https://pizzaovenrepair.center/problems/deck-oven-temperature-drifting/) [Conveyor Oven Belt Not Moving or Stopping Mid-Bake](https://pizzaovenrepair.center/problems/conveyor-belt-not-moving/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) ### Power 2 codes The oven is not getting the supply it was built for: a breaker that tripped under a full load of elements, one leg of a three-phase feed missing so half the heat is gone, a blown control fuse, or voltage that sags when the whole kitchen is running. Resetting a tripped breaker once is fair. A trip that repeats, a burning smell or a scorched cord means the breaker stays off and the panel stays shut until a technician has looked. [Er 5](https://pizzaovenrepair.center/error-codes/fontana-forni-er5/) [Oven lights stay dark](https://pizzaovenrepair.center/error-codes/lynx-oven-lights-dark/) Usually leads to [Pizza oven thermostat and control repair](https://pizzaovenrepair.center/services/pizza-oven-thermostat-and-control-repair/) Shows up as [Pizza Oven Not Getting Hot Enough to Bake a Crisp Crust](https://pizzaovenrepair.center/problems/pizza-oven-not-getting-hot/) [Burning or Hot Wiring Smell From an Electric Pizza Oven](https://pizzaovenrepair.center/problems/pizza-oven-burning-smell/) [Pizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display](https://pizzaovenrepair.center/problems/pizza-oven-error-code/) For the heart of your home. ## Questions about the codes. ### The code on my pizza oven is not here. What now? A code earns a page only after we have read it in the maker's own manual. Until then, type the code or the blinking light into the booking and the technician reads it against the manual for your serial. ### Two pizza ovens show the same code. Same problem? Not always. Each maker writes its own table, and the same characters can mean a failed ignition on one deck oven and an overheated blower motor on a conveyor. Read every code alongside that oven's rating plate. ### Can I clear a pizza oven code myself? Sometimes. Make sure the gas shutoff is open, the breaker is on, the belt is free of dropped cheese or a stray pan, and the vents are clear, then run the restart the manual describes. A code that comes back within a day points to a part, and after a gas smell, a burning smell or a fire, skip the restart and book. ### The display shows a code but the pizza oven bakes normally. Is something broken? Perhaps not. Some displays simply report a state: a cool-down that keeps the blowers running after service, an energy save setting that drops the heat between rushes, or a menu lock that stops staff from changing the bake times. Those pages explain how to leave the state with no part at all. --- **[Read on the site: Pizza Oven Error Codes — What They Mean](https://pizzaovenrepair.center/error-codes/)** **[Book a visit with PizzaOvenRepair.center](https://pizzaovenrepair.center/schedule/)**