CommercialApplianceRepair.center (844) 571-4566Mon–Sat, 8am–8pm Book a visit
A row of front-load commercial laundry machines in an on-premise laundry, their round glass doors closed and drums empty, a folding table and a stack of clean white towels beside them, nobody at the machines.

Middleby Marshall MC1_COMM_LOST: the CTX front belt control is not answering

Each conveyor belt on a CTX infrared oven has its own motor control, and the front one is called MC1.

(844) 571-4566

Mon–Sat, 8am–8pm

  • Motors and drives
  • Commercial laundry machine repair
  • Source: Middleby Marshall

Book a visit

Three short steps, about a minute.

or call (844) 571-4566

What MC1_COMM_LOST
actually means.

Each conveyor belt on a CTX infrared oven has its own motor control, and the front one is called MC1. The touch screen checks in with it constantly; after 5 seconds of silence the oven beeps and shows MC1_COMM_LOST. Without that link the screen cannot confirm the front belt speed, and belt speed is the cook time on a conveyor oven.

Middleby Marshall commercial appliance display · also shown as MC1_COMM_LOST

What to do when MC1_COMM_LOST shows on the commercial appliance

Kind of codeMotors and drives

Something that should turn is not turning, or not at the speed the controller expects. A washer-extractor's drive or its inverter may stop the spin when the load is out of balance or a bearing drags, a tumbler's belt may slip so the drum barely moves, a convection or combi fan may slow on worn bearings and bake unevenly, and a dish machine's wash pump may hum without spraying. Redistributing a load, confirming the door is latched and running the machine's own test cycle are fair; a drum, a belt or a motor is a visit, and nobody reaches into a drum that could still move.

Usually leads toCommercial laundry machine repair

Coin, card and on-premise laundry machines and tumblers: door locks, bearings, inverters, burners and payment hardware.

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. Single-belt ovens use MC1 only.

Before you book,
in this order.

Each step comes from Middleby Marshall's own guidance for MC1_COMM_LOST on its commercial appliances. Follow it to the end: the last card says whether this is a visit.

01

Acknowledge the message on the screen and watch the front belt to see whether it is still moving at the set time.

02

Power the oven off and back on once to restart the motor control.

03

Stop sending product down the front lane if the belt has slowed or stopped, since items would sit in the heat too long.

04

If MC1_COMM_LOST returns, book a visit so the motor control, its cable and its power can be tested.

Still there?

It usually turns into commercial laundry machine repair. Book with the code and the model number.

What not to do

MC1_COMM_LOST is not a jammed belt; a jam shows as MC1_HIGH_CURRENT instead. It also leaves the rear lane alone, which has its own message, MC2_COMM_LOST.

What you may
notice with it.

The commercial appliance problems MC1_COMM_LOST 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 MC1_COMM_LOST usually leads

Commercial laundry machine repair.

Laundry machine door lock, belt, bearings and seal, drain valve, inverter or motor; tumbler igniter, flame sensor, gas valve coil or airflow switch · 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_LOSTMC2_COMM_LOSTPROBE_TL_FAULTFAN_HIGH_CURRENTFAN LOW CURRENTMC1_HIGH_CURRENTLIMIT BOARD HIGH TEMPLIMIT BOARD PROBE FAULTIO BOARD HIGH TEMPCONTROL COMPARTMENT HIGH TEMPHIGH TEMP CHECK FANSFAN FAULT
All 14 Middleby Marshall codes

Motors and drives on other makes

Alto-Shaam E03Blodgett Fan ErrorDexter F9Frymaster E25Garland E03Hatco Fan Is StoppedMiele Professional F78Rational Service 47.1
All 22 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

Communication between the User Interface and Front Motor Control (MC1) has been interrupted for 5 seconds.
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. Single-belt ovens use MC1 only.

Middleby Marshall MC1_COMM_LOST 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 MC1_COMM_LOST.

Can I clear MC1_COMM_LOST myself?
Acknowledge the message on the screen and watch the front belt to see whether it is still moving at the set time. If it comes back, it needs a visit.
Which belt is MC1 on a Middleby Marshall CTX oven?
MC1 is the front motor control. On two-belt ovens the rear belt is run by MC2, which reports its own communication message.
Will the CTX front belt keep running with MC1_COMM_LOST showing?
It may, but the screen can no longer confirm its speed. Watch the product coming out and stop loading the lane if the timing looks wrong.
Is MC1_COMM_LOST a CTX motor failure?
Not always. The message means the conversation stopped; the motor, its control board, the cable or the supply feeding it can each be the reason.

Back to your everyday

Still showing MC1_COMM_LOST?

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