--- title: "Commercial Controls and Board Repair" description: "Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so." url: "https://commercialappliancerepair.center/services/commercial-controls-and-board-repair/" --- # Commercial Controls and Board Repair Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so. ## What the commercial controls and board repair involves. Almost every piece of commercial equipment made in the last twenty years runs on a controller, and when something goes wrong the display is where the manager looks first. That makes boards look guilty more often than they are. A code on a combi, a fryer computer that shows an error, a reach-in controller with an alarm, a dish machine that stops mid-cycle or a laundry machine that will not start all point at a chain of parts, and the board is only one link: the probes and sensors that feed it, the switches and interlocks that give it permission, the relays and contactors it drives, the power supply behind it and the wiring between them. The technician reads the code and the history, then measures inputs and outputs to show where the chain breaks. A probe that reads wrong, a door switch that no longer closes, a contactor with burned points or a loose connector in a hot compartment is replaced, and the board stays. When the board really has failed, the finding says why, heat, water, a surge or age, so the new one is not lost the same way. Settings such as setpoints, cycle times or payment values are recorded before any board is changed and restored after. How the visit goes ### What it usually costs Moderate · Controller, touch panel, probe or sensor, relay, contactor, power supply, door switch or interlock, tested before anything is changed A probe, a door switch or a contactor is modest. A relay board or a power supply is in the middle, and a main controller or a touch panel, set back up with your setpoints and cycle values, is the dearest part here. ### Answers 6 problems Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display Reach-In Cooler Not Holding Temperature Through a Shift · Commercial Fryer Not Heating or Slow to Recover Between Baskets · Combi Oven Steam Problem: Weak Steam, Scale or a Dry Cavity · Dish Machine Not Reaching Temperature on the Wash or Final Rinse · Restaurant Equipment Burning Smell: Scorched Oil, Hot Wiring or Lint ### Comes up most on Commercial cold storage Commercial cooking equipment · Commercial dish machines · Commercial laundry equipment ### Codes that lead here E02 · E20 · E21 · E92 Alto-Shaam E02: the relay board inside the combi is too hot. ## Commercial controls and board repair, step by step. Restore the settings, run the equipment through a full cycle and note what caused the part to fail. 01 Read the code, the alarm and the controller history, and hear what the equipment did just before it stopped. 02 Measure the probes and sensors that feed the controller against a reference, and test switches and interlocks. 03 Check the outputs the board drives, relays, contactors, valves and motors, and the power supply and connectors. 04 Record setpoints, cycle times and payment values, then replace only the part the measurements condemn. 05 Restore the settings, run the equipment through a full cycle and note what caused the part to fail. ## The problems it answers. 6 of them, from commercial appliance error code on a combi, fryer, dish machine or laundry display to restaurant equipment burning smell: scorched oil, hot wiring or lint. [All problems](https://commercialappliancerepair.center/problems/) Most common ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Before you call ### Tell us this when you book 1. The exact code, alarm or message on the display, and whether it clears on its own or comes back 2. What the equipment was doing when it appeared: defrost, preheat, filtering, a wash cycle or an extract 3. Whether there was a power outage, a storm, a water leak or a cleaning near the controls beforehand 4. The make, model and serial, and any settings your staff changed recently It also answers - [**Reach-In Cooler Not Holding Temperature Through a Shift** 6 causes](https://commercialappliancerepair.center/problems/reach-in-not-holding-temperature/) - [**Commercial Fryer Not Heating or Slow to Recover Between Baskets** 6 causes](https://commercialappliancerepair.center/problems/commercial-fryer-not-heating/) - [**Combi Oven Steam Problem: Weak Steam, Scale or a Dry Cavity** 6 causes](https://commercialappliancerepair.center/problems/combi-oven-steam-problem/) - [**Dish Machine Not Reaching Temperature on the Wash or Final Rinse** 6 causes](https://commercialappliancerepair.center/problems/dish-machine-not-reaching-temperature/) - [**Restaurant Equipment Burning Smell: Scorched Oil, Hot Wiring or Lint** 6 causes · gas, fire, food at risk or water near power](https://commercialappliancerepair.center/problems/commercial-burning-smell/) ## Moderate, on the site's scale. A probe, a door switch or a contactor is modest. A relay board or a power supply is in the middle, and a main controller or a touch panel, set back up with your setpoints and cycle values, is the dearest part here. [Read the full cost guide](https://commercialappliancerepair.center/cost/) | Repair | Relative cost | | --- | --- | | [Walk-in evaporator fan, defrost heater or drain line heater, door gasket, frame heater, expansion valve, leak repair, compressor or condensing unit](https://commercialappliancerepair.center/services/walk-in-cooler-repair/) | | | [Reach-in, pass-through or prep table gasket, hinge, fan motor, thermostat or controller, defrost heater, leak repair or compressor](https://commercialappliancerepair.center/services/reach-in-and-prep-table-repair/) | | | [Fryer pilot assembly, thermopile, thermostat or probe, high-limit, gas valve, ignition module, element, contactor or filter pump motor](https://commercialappliancerepair.center/services/commercial-fryer-repair/) | | | [Convection or combi blower motor, door switch or gasket, igniter or element, core probe, level probe, steam generator or controller](https://commercialappliancerepair.center/services/commercial-oven-and-combi-repair/) | | | [Cooking line pilot, thermocouple, burner or orifice, safety valve, griddle thermostat, regulator or quick-disconnect hose, leak-checked](https://commercialappliancerepair.center/services/commercial-cooking-line-gas-repair/) | | | [Dish machine tank heater or booster element, thermostat, fill valve, float switch, drain valve, wash pump seal or motor, conveyor drive](https://commercialappliancerepair.center/services/dish-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](https://commercialappliancerepair.center/services/commercial-laundry-machine-repair/) | | | **Controller, touch panel, probe or sensor, relay, contactor, power supply, door switch or interlock, tested before anything is changed** | moderate | | [Scheduled maintenance visit: coils and drains cleaned, gaskets and doors checked, thermostats calibrated, gas leak check, temperatures logged](https://commercialappliancerepair.center/services/preventive-maintenance-plan/) | | ## Where it comes up most. Most bookings: Commercial cold storage, Commercial cooking equipment, Commercial dish machines, Commercial laundry equipment. [All commercial appliance types](https://commercialappliancerepair.center/types/) Codes that lead here - [`E02` Alto-Shaam · Controls and power](https://commercialappliancerepair.center/error-codes/alto-shaam-e02/) - [`uLi` Beverage-Air · Controls and power](https://commercialappliancerepair.center/error-codes/beverage-air-uli/) - [`Cavity Probe Error` Blodgett · Sensors and probes](https://commercialappliancerepair.center/error-codes/blodgett-cavity-probe-error/) - [`E0` Continental Refrigerator · Sensors and probes](https://commercialappliancerepair.center/error-codes/continental-refrigerator-e0/) [All 127 codes that lead here](https://commercialappliancerepair.center/error-codes/#family-board) Often the same visit - [**Commercial appliance diagnostic visit** 4 problems in common](https://commercialappliancerepair.center/services/diagnostic-visit/) - [**Reach-in and prep table repair** 3 problems in common · moderate](https://commercialappliancerepair.center/services/reach-in-and-prep-table-repair/) - [**Commercial oven and combi oven repair** 3 problems in common · moderate to highest](https://commercialappliancerepair.center/services/commercial-oven-and-combi-repair/) ### Commercial cold storage ### Commercial cooking equipment ### Commercial dish machines ## The makes we see it on. 35 makes on this site, and the commercial controls and board repair on any of them. Each mark opens that make's own page. [All 35 brands](https://commercialappliancerepair.center/brands/) ## Commercial controls and board repair, where we come out. The business, the climate and the building all change how the commercial controls and board repair goes. These notes are about that, metro by metro. [All service areas](https://commercialappliancerepair.center/locations/) [Tampa Bay](https://commercialappliancerepair.center/locations/tampa-bay/) FL · 31 areas Tampa Bay sees some of the most lightning in the country, and surges travel through kitchen and laundry circuits into control boards, so a board repair there looks for surge damage and loose connections and asks whether the unit needs surge protection. - [Hyde Park](https://commercialappliancerepair.center/locations/tampa-bay/hyde-park/) - [Davis Islands](https://commercialappliancerepair.center/locations/tampa-bay/davis-islands/) - [Palma Ceia](https://commercialappliancerepair.center/locations/tampa-bay/palma-ceia/) - [Westchase](https://commercialappliancerepair.center/locations/tampa-bay/westchase/) - [Carrollwood](https://commercialappliancerepair.center/locations/tampa-bay/carrollwood/) - [Belleair](https://commercialappliancerepair.center/locations/tampa-bay/belleair/) - [St. Pete Beach](https://commercialappliancerepair.center/locations/tampa-bay/st-pete-beach/) - [Palm Harbor](https://commercialappliancerepair.center/locations/tampa-bay/palm-harbor/) [Orlando](https://commercialappliancerepair.center/locations/orlando/) FL · 30 areas Orlando's daily summer thunderstorms bring power flickers that scramble fryer computers, combi controls and laundry boards, and a repair there restores settings, tests the board and looks at how the equipment is wired and protected. - [Winter Park](https://commercialappliancerepair.center/locations/orlando/winter-park/) - [Windermere](https://commercialappliancerepair.center/locations/orlando/windermere/) - [Dr. Phillips](https://commercialappliancerepair.center/locations/orlando/dr-phillips/) - [Bay Hill](https://commercialappliancerepair.center/locations/orlando/bay-hill/) - [Lake Nona](https://commercialappliancerepair.center/locations/orlando/lake-nona/) - [Heathrow](https://commercialappliancerepair.center/locations/orlando/heathrow/) - [Celebration](https://commercialappliancerepair.center/locations/orlando/celebration/) [Miami / South Florida](https://commercialappliancerepair.center/locations/south-florida/) FL · 47 areas South Florida humidity and salt air corrode control boards and their connectors, and a control that behaves erratically is often cleaned, dried and reseated before a board is replaced, with the enclosure seals checked too. - [Brickell](https://commercialappliancerepair.center/locations/south-florida/brickell/) - [Coconut Grove](https://commercialappliancerepair.center/locations/south-florida/coconut-grove/) - [Coral Gables](https://commercialappliancerepair.center/locations/south-florida/coral-gables/) - [Pinecrest](https://commercialappliancerepair.center/locations/south-florida/pinecrest/) - [Key Biscayne](https://commercialappliancerepair.center/locations/south-florida/key-biscayne/) - [Aventura](https://commercialappliancerepair.center/locations/south-florida/aventura/) - [Sunny Isles Beach](https://commercialappliancerepair.center/locations/south-florida/sunny-isles-beach/) - [Bal Harbour](https://commercialappliancerepair.center/locations/south-florida/bal-harbour/) - [Miami Beach](https://commercialappliancerepair.center/locations/south-florida/miami-beach/) - [Golden Beach](https://commercialappliancerepair.center/locations/south-florida/golden-beach/) - [Weston](https://commercialappliancerepair.center/locations/south-florida/weston/) - [Boca Raton](https://commercialappliancerepair.center/locations/south-florida/boca-raton/) - [Palm Beach](https://commercialappliancerepair.center/locations/south-florida/palm-beach/) [New York Metro](https://commercialappliancerepair.center/locations/new-york/) NY · 75 areas Aging electrical service in older New York buildings can leave voltage sagging or circuits unbalanced, which confuses the modern controls on combis, dish machines and laundry equipment, so the technician measures the supply before replacing any board. - [Upper East Side](https://commercialappliancerepair.center/locations/new-york/upper-east-side/) - [Upper West Side](https://commercialappliancerepair.center/locations/new-york/upper-west-side/) - [Tribeca](https://commercialappliancerepair.center/locations/new-york/tribeca/) - [SoHo](https://commercialappliancerepair.center/locations/new-york/soho/) - [Greenwich Village](https://commercialappliancerepair.center/locations/new-york/greenwich-village/) - [Battery Park City](https://commercialappliancerepair.center/locations/new-york/battery-park-city/) - [Brooklyn Heights](https://commercialappliancerepair.center/locations/new-york/brooklyn-heights/) - [Park Slope](https://commercialappliancerepair.center/locations/new-york/park-slope/) - [DUMBO](https://commercialappliancerepair.center/locations/new-york/dumbo/) - [Forest Hills](https://commercialappliancerepair.center/locations/new-york/forest-hills/) - [Great Neck](https://commercialappliancerepair.center/locations/new-york/great-neck/) - [Southampton](https://commercialappliancerepair.center/locations/new-york/southampton/) - [Scarsdale](https://commercialappliancerepair.center/locations/new-york/scarsdale/) [Houston](https://commercialappliancerepair.center/locations/houston/) TX · 36 areas Houston storms bring long outages and power spikes when the grid comes back, and control boards in walk-ins, fryers and dish machines are often damaged in that moment, so repairs there check the voltage and the unit's restart settings. - [River Oaks](https://commercialappliancerepair.center/locations/houston/river-oaks/) - [Memorial](https://commercialappliancerepair.center/locations/houston/memorial/) - [Tanglewood](https://commercialappliancerepair.center/locations/houston/tanglewood/) - [Greater Heights](https://commercialappliancerepair.center/locations/houston/greater-heights/) - [Kingwood](https://commercialappliancerepair.center/locations/houston/kingwood/) - [Bellaire](https://commercialappliancerepair.center/locations/houston/bellaire/) - [Bunker Hill Village](https://commercialappliancerepair.center/locations/houston/bunker-hill-village/) - [Piney Point Village](https://commercialappliancerepair.center/locations/houston/piney-point-village/) - [Hunters Creek Village](https://commercialappliancerepair.center/locations/houston/hunters-creek-village/) - [Sugar Land](https://commercialappliancerepair.center/locations/houston/sugar-land/) - [Cinco Ranch](https://commercialappliancerepair.center/locations/houston/cinco-ranch/) - [The Woodlands](https://commercialappliancerepair.center/locations/houston/the-woodlands/) - [West University](https://commercialappliancerepair.center/locations/houston/west-university/) [Chicago](https://commercialappliancerepair.center/locations/chicagoland/) IL · 50 areas In Chicagoland, controls on rooftop condensing units face snow, ice and condensation, and indoor boards meet static and dry air all winter, so a board repair there also checks sensor wiring and connectors for moisture damage. - [Lincoln Park](https://commercialappliancerepair.center/locations/chicagoland/lincoln-park/) - [Near North Side](https://commercialappliancerepair.center/locations/chicagoland/near-north-side/) - [West Loop / Near West Side](https://commercialappliancerepair.center/locations/chicagoland/west-loop-near-west-side/) - [Wilmette](https://commercialappliancerepair.center/locations/chicagoland/wilmette/) - [Winnetka](https://commercialappliancerepair.center/locations/chicagoland/winnetka/) - [Glencoe](https://commercialappliancerepair.center/locations/chicagoland/glencoe/) - [River Forest](https://commercialappliancerepair.center/locations/chicagoland/river-forest/) - [Oak Park](https://commercialappliancerepair.center/locations/chicagoland/oak-park/) - [Hinsdale](https://commercialappliancerepair.center/locations/chicagoland/hinsdale/) - [Lake Forest](https://commercialappliancerepair.center/locations/chicagoland/lake-forest/) - [Highland Park](https://commercialappliancerepair.center/locations/chicagoland/highland-park/) - [Gold Coast](https://commercialappliancerepair.center/locations/chicagoland/gold-coast/) - [Lakeview](https://commercialappliancerepair.center/locations/chicagoland/lakeview/) [Los Angeles](https://commercialappliancerepair.center/locations/los-angeles/) CA · 95 areas Los Angeles kitchens with connected equipment rely on touch panels and networked boards, and heat, grease and cleaning chemicals wear them down, so the fix there is often a new touch panel, with its wiring rerouted away from the heat. - [Beverly Hills](https://commercialappliancerepair.center/locations/los-angeles/beverly-hills/) - [Bel Air](https://commercialappliancerepair.center/locations/los-angeles/bel-air/) - [Holmby Hills](https://commercialappliancerepair.center/locations/los-angeles/holmby-hills/) - [Brentwood](https://commercialappliancerepair.center/locations/los-angeles/brentwood/) - [Pacific Palisades](https://commercialappliancerepair.center/locations/los-angeles/pacific-palisades/) - [Santa Monica](https://commercialappliancerepair.center/locations/los-angeles/santa-monica/) - [Hancock Park](https://commercialappliancerepair.center/locations/los-angeles/hancock-park/) - [Studio City](https://commercialappliancerepair.center/locations/los-angeles/studio-city/) - [Calabasas](https://commercialappliancerepair.center/locations/los-angeles/calabasas/) - [Manhattan Beach](https://commercialappliancerepair.center/locations/los-angeles/manhattan-beach/) - [Palos Verdes Estates](https://commercialappliancerepair.center/locations/los-angeles/palos-verdes-estates/) - [Pasadena](https://commercialappliancerepair.center/locations/los-angeles/pasadena/) - [San Marino](https://commercialappliancerepair.center/locations/los-angeles/san-marino/) - [Malibu](https://commercialappliancerepair.center/locations/los-angeles/malibu/) [San Diego](https://commercialappliancerepair.center/locations/san-diego/) CA · 31 areas San Diego coastal kitchens and laundries see salt corrosion on control connectors, and an intermittent error there often traces back to a corroded plug or sensor lead, cleaned or replaced before an expensive board is condemned. - [La Jolla](https://commercialappliancerepair.center/locations/san-diego/la-jolla/) - [Carmel Valley](https://commercialappliancerepair.center/locations/san-diego/carmel-valley/) - [Point Loma](https://commercialappliancerepair.center/locations/san-diego/point-loma/) - [Del Mar](https://commercialappliancerepair.center/locations/san-diego/del-mar/) - [Rancho Santa Fe](https://commercialappliancerepair.center/locations/san-diego/rancho-santa-fe/) - [Coronado](https://commercialappliancerepair.center/locations/san-diego/coronado/) - [Encinitas](https://commercialappliancerepair.center/locations/san-diego/encinitas/) - [Solana Beach](https://commercialappliancerepair.center/locations/san-diego/solana-beach/) [San Francisco Bay Area](https://commercialappliancerepair.center/locations/bay-area/) CA · 74 areas Bay Area businesses often tie their equipment into energy management and monitoring systems, and a board repair there checks the communication module, the sensors and the settings so the kitchen's logs stay accurate after the fix. - [Pacific Heights](https://commercialappliancerepair.center/locations/bay-area/pacific-heights/) - [Presidio Heights](https://commercialappliancerepair.center/locations/bay-area/presidio-heights/) - [Russian Hill](https://commercialappliancerepair.center/locations/bay-area/russian-hill/) - [Noe Valley](https://commercialappliancerepair.center/locations/bay-area/noe-valley/) - [Sea Cliff](https://commercialappliancerepair.center/locations/bay-area/sea-cliff/) - [Hillsborough](https://commercialappliancerepair.center/locations/bay-area/hillsborough/) - [Atherton](https://commercialappliancerepair.center/locations/bay-area/atherton/) - [Woodside](https://commercialappliancerepair.center/locations/bay-area/woodside/) - [Palo Alto](https://commercialappliancerepair.center/locations/bay-area/palo-alto/) - [Los Altos Hills](https://commercialappliancerepair.center/locations/bay-area/los-altos-hills/) - [Tiburon](https://commercialappliancerepair.center/locations/bay-area/tiburon/) - [Piedmont](https://commercialappliancerepair.center/locations/bay-area/piedmont/) - [Marina](https://commercialappliancerepair.center/locations/bay-area/marina/) For the heart of your home. ## Questions about the commercial controls and board repair. ### Does a code on the display mean the control board has failed? Rarely on its own. Most codes report what the board sees, a probe out of range, a door open, a fill that took too long, so the fix is usually the part the code points at. The board is replaced only when it is shown to be the broken link. ### Can staff reset the controller to clear a code? A single reset by the maker's steps is reasonable, and it is worth writing down the code first. If the same code comes back, stop resetting it and book a visit, because repeated resets can hide a temperature or a safety problem. ### Why did two boards fail in the same kitchen within a year? Heat, grease and water are the usual reasons: a controller mounted beside a flue, a hood that no longer pulls, a spray hose aimed at the panel, or surges on a shared circuit. The finding names the cause so the next board lasts. --- **[Read on the site: Commercial Controls and Board Repair](https://commercialappliancerepair.center/services/commercial-controls-and-board-repair/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**