--- title: "Alto-Shaam E03: the convection fan did not start turning" description: "What E03 means on Alto-Shaam E03: the convection fan did not start turnings, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/alto-shaam-e03/" --- # Alto-Shaam E03: the convection fan did not start turning The CTP watches its convection fan with a Hall effect sensor. ## What E03 actually means. The CTP watches its convection fan with a Hall effect sensor. If the fan has not turned within 60 seconds of being told to run, the display calls out E03. A locked motor or fan wheel, a motor control that is flashing its own code, or a sensor that misses rotation are the causes listed. Alto-Shaam commercial appliance display · also shown as E04 What to do when E03 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 Alto-Shaam An Alto-Shaam call is usually booked for the hours between the last plate and the prep crew, so the cabinet can cool and the tech can open it without holding up service. ### Source Alto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy) Table-top CTP models and the upper fan of roll-in models, per MN-35948 Rev 21. Roll-in lower fans show E04. ## Before you book, in this order. Each step comes from Alto-Shaam's own guidance for E03 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Acknowledge E03 with Start and remove the food, since the oven cannot bake evenly without its fan. 02 With the oven off and cool, look through the door for a pan, foil or rack wedged against the fan guard. 03 With nothing blocking it, book a visit; the motor, its control or the sensor has to 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 E03 is the upper or only fan; roll-in models report the lower fan separately as E04. It also differs from E53, which is the fan motor overheating after it failed to spin. ## What you may notice with it. The commercial appliance problems E03 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 E03 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/) ## Alto-Shaam commercial appliances. An Alto-Shaam call is usually booked for the hours between the last plate and the prep crew, so the cabinet can cool and the tech can open it without holding up service. [Alto-Shaam commercial appliance repair](https://commercialappliancerepair.center/brands/alto-shaam/) More Alto-Shaam codes [E01](https://commercialappliancerepair.center/error-codes/alto-shaam-e01/) [E02](https://commercialappliancerepair.center/error-codes/alto-shaam-e02/) [E13](https://commercialappliancerepair.center/error-codes/alto-shaam-e13/) [E20](https://commercialappliancerepair.center/error-codes/alto-shaam-e20/) [E21](https://commercialappliancerepair.center/error-codes/alto-shaam-e21/) [E34](https://commercialappliancerepair.center/error-codes/alto-shaam-e34/) [E36](https://commercialappliancerepair.center/error-codes/alto-shaam-e36/) [E57](https://commercialappliancerepair.center/error-codes/alto-shaam-e57/) [E89](https://commercialappliancerepair.center/error-codes/alto-shaam-e89/) [E92](https://commercialappliancerepair.center/error-codes/alto-shaam-e92/) [E100](https://commercialappliancerepair.center/error-codes/alto-shaam-e100/) [E105](https://commercialappliancerepair.center/error-codes/alto-shaam-e105/) [All 15 Alto-Shaam codes](https://commercialappliancerepair.center/error-codes/#codes-alto-shaam) Motors and drives on other makes [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/) [Middleby Marshall MC1_COMM_LOST](https://commercialappliancerepair.center/error-codes/middleby-marshall-mc1-comm-lost/) [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 27 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-motor) Alto-Shaam builds this ### Commercial cold storage Reach-in and pass-through cabinets, walk-in coolers and walk-in freezers, prep and sandwich tables, undercounter units and blast chillers that hold a kitchen's food at safe temperatures. Alto-Shaam 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 Alto-Shaam's own words > Convection fan motor does not spin after 60 seconds. [Alto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy)](https://web.archive.org/web/20220509173647/https://www.alto-shaam.com/en/media-library/widen-assets/technical-literature/operators-manual/operators-manual_combitherm_ctp_mn-35948-en-18-pdf.pdf) [Alto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy)](https://web.archive.org/web/20220509173647/https://www.alto-shaam.com/en/media-library/widen-assets/technical-literature/operators-manual/operators-manual_combitherm_ctp_mn-35948-en-18-pdf.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Table-top CTP models and the upper fan of roll-in models, per MN-35948 Rev 21. Roll-in lower fans show E04. ## Alto-Shaam E03 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 E03 with Start and remove the food, since the oven cannot bake evenly without its fan. If it comes back, it needs a visit. ### What stops the fan on an Alto-Shaam combi and brings up E03? The manual lists a locked motor or fan wheel, a motor control with its own error, and a rotation sensor that does not register. Something loose inside the cabinet is worth checking first. ### Is E03 on an Alto-Shaam the same as E04? They describe the same event on different fans. E03 is the table-top or upper fan and E04 is the lower fan on roll-in models. ### Can I bake with E03 showing on my Alto-Shaam? No. Without the convection fan, heat does not move through the cabinet and food cooks unevenly or not at all. --- **[Read on the site: Alto-Shaam E03: the convection fan did not start turning](https://commercialappliancerepair.center/error-codes/alto-shaam-e03/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**