--- title: "Blodgett Com Error: the control lost contact with the relay board" description: "What Com Error means on Blodgett Com Error: the control lost contact with the relay boards, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/blodgett-com-error/" --- # Blodgett Com Error: the control lost contact with the relay board The control you touch and the relay board that switches heat, water and fans talk over a cable. ## What Com Error actually means. The control you touch and the relay board that switches heat, water and fans talk over a cable. When that conversation drops for 3 seconds, the control shows Com Error. Blodgett's sheet asks for both connections and the cable to be checked for continuity. Blodgett commercial appliance display · also shown as Com Error What to do when Com Error shows on the commercial appliance ### Kind of code Controls and power The controller itself is reporting trouble, or the supply behind it is: a display with dead segments, a keypad that stopped responding after steam or degreaser got behind it, relays that stick, stored recipes or cycles that vanished overnight, a blown control fuse, or one leg of a three-phase feed missing so half the heat or the pump is gone. A full power cycle at the breaker, done as the manual describes, clears a passing glitch; a code that returns, a scorched smell or any sign of moisture behind the panel means the breaker stays off, and that is a visit. ### Usually leads to Commercial controls and board repair Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so. ### 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 Blodgett A Blodgett visit tends to land early in the morning, before the first sheet pans go in and while the cavity is still cold. ### Source Blodgett MenuSelect BC20 control service guide Blodgett BC-20 combi ovens with the MenuSelect control (MenuSelect BC20 service guide). Also on the combi and HydroVection error codes sheet. ## Before you book, in this order. Each step comes from Blodgett's own guidance for Com Error on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Switch the oven off and on once to restore the link. 02 If it comes back, note when it happens (startup, steam, cleaning) to help the technician. 03 Arrange service for the cable, its connections and the relay board. ### Still there? It usually turns into [commercial controls and board repair](https://commercialappliancerepair.center/services/commercial-controls-and-board-repair/). Book with the code and the model number. ### What not to do Com Error is not a heating or probe message; the parts may all be fine while the link between them is not. Nor does it point to a USB or network issue. ## What you may notice with it. The commercial appliance problem Com Error 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/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where Com Error usually leads ## Commercial controls and board repair. **Controller, touch panel, probe or sensor, relay, contactor, power supply, door switch or interlock, tested before anything is changed · moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/commercial-controls-and-board-repair/) ## Blodgett commercial appliances. A Blodgett visit tends to land early in the morning, before the first sheet pans go in and while the cavity is still cold. [Blodgett commercial appliance repair](https://commercialappliancerepair.center/brands/blodgett/) More Blodgett codes [Cavity Probe Error](https://commercialappliancerepair.center/error-codes/blodgett-cavity-probe-error/) [Cavity High Temp Error](https://commercialappliancerepair.center/error-codes/blodgett-cavity-high-temp-error/) [High Temp Error](https://commercialappliancerepair.center/error-codes/blodgett-high-temp-error/) [Cooling Fan Probe Error](https://commercialappliancerepair.center/error-codes/blodgett-cooling-fan-probe-error/) [Quench Probe Error](https://commercialappliancerepair.center/error-codes/blodgett-quench-probe-error/) [Fan Error](https://commercialappliancerepair.center/error-codes/blodgett-fan-error/) [No Heat Error](https://commercialappliancerepair.center/error-codes/blodgett-no-heat-error/) [Boiler High Temp Error](https://commercialappliancerepair.center/error-codes/blodgett-boiler-high-temp-error/) [Boiler Hi Limit Switch](https://commercialappliancerepair.center/error-codes/blodgett-boiler-hi-limit-switch/) [Boiler Probe Error](https://commercialappliancerepair.center/error-codes/blodgett-boiler-probe-error/) [Water Level Error](https://commercialappliancerepair.center/error-codes/blodgett-water-level-error/) [Delime Error](https://commercialappliancerepair.center/error-codes/blodgett-delime-error/) [All 15 Blodgett codes](https://commercialappliancerepair.center/error-codes/#codes-blodgett) Controls and power on other makes [Alto-Shaam E02](https://commercialappliancerepair.center/error-codes/alto-shaam-e02/) [Beverage-Air uLi](https://commercialappliancerepair.center/error-codes/beverage-air-uli/) [Delfield uLi](https://commercialappliancerepair.center/error-codes/delfield-uli/) [Dexter F1](https://commercialappliancerepair.center/error-codes/dexter-f1/) [Frymaster E19](https://commercialappliancerepair.center/error-codes/frymaster-e19/) [Garland E01](https://commercialappliancerepair.center/error-codes/garland-e01/) [Hatco Communication Error](https://commercialappliancerepair.center/error-codes/hatco-communication-error/) [Henny Penny E-4](https://commercialappliancerepair.center/error-codes/henny-penny-e-4/) [All 65 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-board) Blodgett 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 Blodgett's own words > The control lost signals from the relay board for 3 seconds. [Blodgett MenuSelect BC20 control service guide](https://www.blodgett.com/custom/PDF/service/Menuselect-service-guide.pdf) [Blodgett combi and HydroVection control error codes service sheet](https://www.blodgett.com/custom/PDF/service/Error-codes.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Blodgett BC-20 combi ovens with the MenuSelect control (MenuSelect BC20 service guide). Also on the combi and HydroVection error codes sheet. ## Blodgett Com Error 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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Switch the oven off and on once to restore the link. If it comes back, it needs a visit. ### Does Com Error on a Blodgett mean the control board is dead? Not necessarily. A loose connector or damaged cable causes the same message. ### Why does my Blodgett show Com Error during steaming? Moisture or heat near a connector can interrupt the signal. Note the timing for the technician. ### Can I reseat the Blodgett relay board cable myself? The board sits behind the control panel with live wiring, so leave it to a technician. --- **[Read on the site: Blodgett Com Error: the control lost contact with the relay board](https://commercialappliancerepair.center/error-codes/blodgett-com-error/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**