--- title: "Middleby Marshall MC1_COMM_LOST: the CTX front belt control is not answering" description: "What MC1_COMM_LOST means on Middleby Marshall MC1_COMM_LOST: the CTX front belt control is not answerings, what to check before booking, and when it is not a…" url: "https://commercialappliancerepair.center/error-codes/middleby-marshall-mc1-comm-lost/" --- # 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. ## 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 code Motors 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 to Commercial laundry machine repair Coin, card and on-premise laundry machines and tumblers: door locks, bearings, inverters, burners and payment hardware. ### Shows up as Commercial 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. ### Make Middleby 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. ### Source Middleby 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](https://commercialappliancerepair.center/services/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](https://commercialappliancerepair.center/problems/) Before you call ### [Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display](https://commercialappliancerepair.center/problems/commercial-error-code/) [All 8 causes, cheapest first](https://commercialappliancerepair.center/problems/commercial-error-code/) It also comes with - [**Commercial Convection Oven Baking Unevenly Across the Racks**](https://commercialappliancerepair.center/problems/commercial-oven-uneven-bake/) 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](https://commercialappliancerepair.center/services/commercial-laundry-machine-repair/) ## 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](https://commercialappliancerepair.center/brands/middleby-marshall/) More Middleby Marshall codes [IO_COMM_LOST](https://commercialappliancerepair.center/error-codes/middleby-marshall-io-comm-lost/) [MC2_COMM_LOST](https://commercialappliancerepair.center/error-codes/middleby-marshall-mc2-comm-lost/) [PROBE_TL_FAULT](https://commercialappliancerepair.center/error-codes/middleby-marshall-probe-tl-error/) [FAN_HIGH_CURRENT](https://commercialappliancerepair.center/error-codes/middleby-marshall-fan-high-current/) [FAN LOW CURRENT](https://commercialappliancerepair.center/error-codes/middleby-marshall-fan-low-current/) [MC1_HIGH_CURRENT](https://commercialappliancerepair.center/error-codes/middleby-marshall-mc1-high-current/) [LIMIT BOARD HIGH TEMP](https://commercialappliancerepair.center/error-codes/middleby-marshall-limit-board-high-temp/) [LIMIT BOARD PROBE FAULT](https://commercialappliancerepair.center/error-codes/middleby-marshall-limit-board-probe-error/) [IO BOARD HIGH TEMP](https://commercialappliancerepair.center/error-codes/middleby-marshall-io-board-high-temp/) [CONTROL COMPARTMENT HIGH TEMP](https://commercialappliancerepair.center/error-codes/middleby-marshall-control-compartment-high-temp/) [HIGH TEMP CHECK FANS](https://commercialappliancerepair.center/error-codes/middleby-marshall-high-temp-check-fans/) [FAN FAULT](https://commercialappliancerepair.center/error-codes/middleby-marshall-fan-error/) [All 14 Middleby Marshall codes](https://commercialappliancerepair.center/error-codes/#codes-middleby-marshall) Motors and drives on other makes [Alto-Shaam E03](https://commercialappliancerepair.center/error-codes/alto-shaam-e03/) [Blodgett Fan Error](https://commercialappliancerepair.center/error-codes/blodgett-fan-error/) [Dexter F9](https://commercialappliancerepair.center/error-codes/dexter-f9/) [Frymaster E25](https://commercialappliancerepair.center/error-codes/frymaster-e25/) [Garland E03](https://commercialappliancerepair.center/error-codes/garland-e03/) [Hatco Fan Is Stopped](https://commercialappliancerepair.center/error-codes/hatco-fan-is-stopped/) [Miele Professional F78](https://commercialappliancerepair.center/error-codes/miele-professional-f78/) [Rational Service 47.1](https://commercialappliancerepair.center/error-codes/rational-service-47-1/) [All 22 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-motor) 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)](https://www.middlebymarshall.com/wp-content/uploads/2022/01/CTX-DZ26T-DZ33T-DZ55T-Series-Electric-Oven-Rev-G.pdf) [Middleby Marshall CTX DZ26T, DZ33T and DZ55T infrared conveyor oven owner's operating and installation manual (Rev G)](https://www.middlebymarshall.com/wp-content/uploads/2022/01/CTX-DZ26T-DZ33T-DZ55T-Series-Electric-Oven-Rev-G.pdf) [Middleby Marshall CTX DZ26T, DZ33T and DZ55T infrared conveyor oven owner's operating and installation manual (Rev G)](https://www.middlebymarshall.com/wp-content/uploads/2022/01/CTX-DZ26T-DZ33T-DZ55T-Series-Electric-Oven-Rev-G.pdf) 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. 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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. --- **[Read on the site: Middleby Marshall MC1_COMM_LOST: the CTX front belt control is not answering](https://commercialappliancerepair.center/error-codes/middleby-marshall-mc1-comm-lost/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**