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A stainless sandwich prep table on a restaurant line, the prep table's lid raised over a row of covered food pans, a probe thermometer standing in one pan, nobody at the table.

Middleby Marshall CONTROL COMPARTMENT HIGH TEMP: the CTX electronics are too warm

The electronics of a CTX sit in a raceway cooled by a single fan behind the front filter.

(844) 571-4566

Mon–Sat, 8am–8pm

  • Temperature and alarms
  • Reach-in and prep table repair
  • Source: Middleby Marshall

Book a visit

Three short steps, about a minute.

or call (844) 571-4566

What CONTROL COMPARTMENT HIGH TEMP
actually means.

The electronics of a CTX sit in a raceway cooled by a single fan behind the front filter. When that space overheats for 5 seconds, the oven beeps, the Cooling Fan Warning lights and the screen shows CONTROL COMPARTMENT HIGH TEMP. The manual sends the owner to the fan and its filter first, as part of the weekly cleaning.

Middleby Marshall commercial appliance display · also shown as CONTROL COMPARTMENT HIGH TEMP

What to do when CONTROL COMPARTMENT HIGH TEMP shows on the commercial appliance

Kind of codeTemperature and alarms

The controller has seen a temperature outside the band it was set for and is saying so: a box above its alarm point, a fryer vat or an oven cavity that tripped its high-limit, or a dish machine rinse that never came up to heat. Often the cause sits outside the unit, such as a door left open during a delivery, a coil packed with grease, a kitchen far hotter than the maker allows or a booster fed cold water. Checking the door, the coil and the air around the unit is fair; move the product if a cold box stays above 41°F, and book the visit.

Usually leads toReach-in and prep table repair

Reach-ins, pass-throughs, prep tables and blast chillers: gaskets, hinges, fans, thermostats, condensers and compressors.

Shows up asCommercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone.

MakeMiddleby Marshall

Middleby Marshall ovens on this site are the kitchen's non-pizza baking and roasting work; pizza service calls belong to our pizza oven site.

SourceMiddleby Marshall CTX DZ26T, DZ33T and DZ55T infrared conveyor oven owner's operating and installation manual (Rev G)

CTX DZ26T, DZ33T and DZ55T infrared conveyor ovens with the touch screen (manual Rev G). The message shows only on the Manual Mode and Preset Mode main screens.

Before you book,
in this order.

Each step comes from Middleby Marshall's own guidance for CONTROL COMPARTMENT HIGH TEMP on its commercial appliances. Follow it to the end: the last card says whether this is a visit.

01

Lift off the front fan filter with the oven off, clean it and let it dry fully before putting it back.

02

Check that the fan runs and that nothing blocks the filter or the path of warm air out of the oven.

03

Acknowledge the message once the filter is back in place.

04

Book a visit if the message and the warning light return with a clean filter and a running fan.

Still there?

It usually turns into reach-in and prep table repair. Book with the code and the model number.

What not to do

This message is about the electronics compartment, not the cooking zones. A cooling fan with abnormal current reports FAN_HIGH_CURRENT or FAN LOW CURRENT, which may explain this message.

What you may
notice with it.

The commercial appliance problems CONTROL COMPARTMENT HIGH TEMP tends to arrive with. Answer these at the commercial appliance before anyone is booked.

All problems

Before you call

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

All 8 causes, cheapest first

It also comes with

Close view of the dark touch control panel on the front of a stainless combi oven in a commercial kitchen, one abstract amber warning indicator glowing among unlit icons, the steam-fogged glass door blurred beside it. Problem

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

8 causes, cheapest first

Where CONTROL COMPARTMENT HIGH TEMP usually leads

Reach-in and prep table repair.

Reach-in, pass-through or prep table gasket, hinge, fan motor, thermostat or controller, defrost heater, leak repair or compressor · moderate.
Book a visit What the job involves

Middleby Marshall
commercial appliances.

Middleby Marshall ovens on this site are the kitchen's non-pizza baking and roasting work; pizza service calls belong to our pizza oven site.

Middleby Marshall commercial appliance repair

More Middleby Marshall codes

IO_COMM_LOSTMC1_COMM_LOSTMC2_COMM_LOSTPROBE_TL_FAULTFAN_HIGH_CURRENTFAN LOW CURRENTMC1_HIGH_CURRENTLIMIT BOARD HIGH TEMPLIMIT BOARD PROBE FAULTIO BOARD HIGH TEMPHIGH TEMP CHECK FANSFAN FAULT
All 14 Middleby Marshall codes

Temperature and alarms on other makes

Alto-Shaam E13Beverage-Air HiBlodgett Cavity High Temp ErrorCleveland RESET lightContinental Refrigerator HIDelfield HiFrymaster E16Garland E04
All 68 codes of this kind
A working restaurant cooking line under a stainless ventilation hood, two stainless gas fryers with baskets hanging above the oil, a flat griddle and a combi oven with a glass door beside them, the equipment clearly the subject, a cook seen only from behind and shoulders down at the far end of the line, warm kitchen light, small blue flames visible under the griddle. Middleby Marshall builds this

Commercial cooking equipment

Fryers, griddles, charbroilers, restaurant ranges, convection and combi ovens, steamers, kettles, holding cabinets and toasters, on gas or electric, that make up the hot side of a kitchen line.

In Middleby Marshall's own words

Check cooling fan for proper operation and cleanliness.
Middleby Marshall CTX DZ26T, DZ33T and DZ55T infrared conveyor oven owner's operating and installation manual (Rev G) Middleby Marshall CTX DZ26T, DZ33T and DZ55T infrared conveyor oven owner's operating and installation manual (Rev G) Middleby Marshall CTX DZ26T, DZ33T and DZ55T infrared conveyor oven owner's operating and installation manual (Rev G)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. CTX DZ26T, DZ33T and DZ55T infrared conveyor ovens with the touch screen (manual Rev G). The message shows only on the Manual Mode and Preset Mode main screens.

Middleby Marshall CONTROL COMPARTMENT HIGH TEMP commercial appliance 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 areas

Tampa BayFL · 31 areas

OrlandoFL · 30 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

San Francisco Bay AreaCA · 74 areas

A restaurant team working a busy commercial kitchen line.
For the heart of your home.

Questions
about CONTROL COMPARTMENT HIGH TEMP.

Can I clear CONTROL COMPARTMENT HIGH TEMP myself?
Lift off the front fan filter with the oven off, clean it and let it dry fully before putting it back. If it comes back, it needs a visit.
What is the Cooling Fan Warning light on a CTX?
It lights with this message to point you at the cooling fan. Cleaning the filter and confirming the fan runs are the first steps.
How often should the CTX fan filter be cleaned?
The manual lists it in the weekly routine: shake out dust, or wash it with dish soap if it is greasy, and let it dry completely.
Why does my CTX overheat its electronics near the fryers?
Warm, greasy air near fryers clogs the filter and raises the intake temperature. More frequent filter cleaning helps.

Back to your everyday

Still showing CONTROL COMPARTMENT HIGH TEMP?

A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.

Schedule a repair Call (844) 571-4566
(844) 571-4566 Schedule a repair