Middleby Marshall PROBE # OPEN: one temperature probe has stopped reading
X-Series conveyors read the chamber with more than one temperature probe.
Mon–Sat, 8am–8pm
- Temperature and sensors
- Pizza oven thermostat and control repair
- Source: Middleby Marshall
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What PROBE # OPEN
actually means.
X-Series conveyors read the chamber with more than one temperature probe. When one of them opens, the display shows PROBE followed by its number and OPEN, and an alarm sounds. The control makes up for the lost probe with the remaining ones, so the oven can carry on while service is arranged.
Middleby Marshall pizza oven display
What to do when PROBE # OPEN 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.
MakeMiddleby Marshall
A Middleby Marshall conveyor call is about the line: how many pies came out right before the belt slowed, stalled or the crust went pale.
SourceMiddleby Marshall X70G, X55G, X55GWB gas oven owner's operating and installation manual (78866 Rev F)
X70G, X55G and X55GWB gas conveyors (78866 Rev F). The number in the message is the probe position; the manual prints it as PROBE # OPEN.
Before you book,
in this order.
Each step comes from Middleby Marshall's own guidance for PROBE # OPEN on its pizza ovens. Follow it to the end: the last card says whether this is a visit.
Press Dismiss and carry on with service; the control compensates for the missing probe.
Write down the probe number on the screen.
Watch the bake more closely than usual, and book a visit to replace the probe before a second one fails.
Still there?
It usually turns into pizza oven thermostat and control repair. Book with the code and the model number.
What not to do
One open probe is a warning, not a shutdown. If every probe is lost, the message changes to ALL PROBES OPEN and the oven needs immediate repair.
What you may
notice with it.
The pizza oven problems PROBE # OPEN tends to arrive with. Answer these at the pizza oven before anyone is booked.
All problems
Where PROBE # OPEN usually leads
Pizza oven thermostat and control repair.
Middleby Marshall
pizza ovens.
A Middleby Marshall conveyor call is about the line: how many pies came out right before the belt slowed, stalled or the crust went pale.
Middleby Marshall pizza oven repairMore Middleby Marshall codes
Temperature and sensors on other makes
All 15 codes of this kind
In Middleby Marshall's own words
Temperature Probe number # is
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. X70G, X55G and X55GWB gas conveyors (78866 Rev F). The number in the message is the probe position; the manual prints it as PROBE # OPEN.
Middleby Marshall PROBE # OPEN 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 PROBE # OPEN.
Can I clear PROBE # OPEN myself?
Can I keep using my Middleby Marshall with PROBE # OPEN?
What does the number in PROBE # OPEN mean?
Why do my pizzas bake differently since PROBE # OPEN appeared?
Back to your everyday
Still showing PROBE # OPEN?
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.