--- title: "Frymaster E17: the mechanical high-limit switch has opened" description: "What E17 means on Frymaster E17: the mechanical high-limit switch has openeds, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/frymaster-e17/" --- # Frymaster E17: the mechanical high-limit switch has opened Behind the controller's own temperature ceiling sits a separate physical high limit. ## What E17 actually means. Behind the controller's own temperature ceiling sits a separate physical high limit. On the FQ4000 it opens at a higher temperature than E16 and removes heat no matter what the controller asks for. When it opens, the controller logs E17 and the vat stops heating; a reading this high means the normal temperature control has already been bypassed. Frymaster commercial appliance display · also shown as HIGH LIMIT 2 EXCEEDED What to do when E17 shows on the commercial appliance ### Kind of code Temperature and alarms The controller has seen a temperature outside the band it was set for and is saying so: a box above its alarm point, a fryer vat or an oven cavity that tripped its high-limit, or a dish machine rinse that never came up to heat. Often the cause sits outside the unit, such as a door left open during a delivery, a coil packed with grease, a kitchen far hotter than the maker allows or a booster fed cold water. Checking the door, the coil and the air around the unit is fair; move the product if a cold box stays above 41°F, and book the visit. ### Usually leads to Reach-in and prep table repair Reach-ins, pass-throughs, prep tables and blast chillers: gaskets, hinges, fans, thermostats, condensers and compressors. ### 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 Frymaster A Frymaster fryer is serviced cold: the visit waits until the oil has come down and the vat has been drained by the crew. ### Source Frymaster FilterQuick FQG30U easyTouch gas fryer manual with FQ4000 controller (error log codes, section 5.6) FQ4000 easyTouch touchscreen controller on FilterQuick fryers (FQG30U and related FilterQuick gas and electric models). Earlier Frymaster controllers show HELP HI-2 for a high limit that has tripped or failed. ## Before you book, in this order. Each step comes from Frymaster's own guidance for E17 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Leave the fryer off and let the oil cool without moving or draining it. 02 Keep the Class K extinguisher and the hood suppression pull station clear and ready until the vat has cooled well below frying heat. 03 Write down the time and what was cooking, then book a visit; the reason the oil got that hot has to be found before the switch is reset. ### Still there? It usually turns into [reach-in and prep table repair](https://commercialappliancerepair.center/services/reach-in-and-prep-table-repair/). Book with the code and the model number. ### What not to do E17 is the switch that saved the vat, not the root cause, so resetting it and firing up again only repeats the overheating. It is different from E18, where the oil passed 460°F and this same switch failed to open at all. ## What you may notice with it. The commercial appliance problems E17 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 Fryer Fire or Grease Flare Under the Hood**](https://commercialappliancerepair.center/problems/commercial-fryer-fire/) - [**Commercial Fryer Not Heating or Slow to Recover Between Baskets**](https://commercialappliancerepair.center/problems/commercial-fryer-not-heating/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where E17 usually leads ## Reach-in and prep table repair. **Reach-in, pass-through or prep table gasket, hinge, fan motor, thermostat or controller, defrost heater, leak repair or compressor · moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/reach-in-and-prep-table-repair/) ## Frymaster commercial appliances. A Frymaster fryer is serviced cold: the visit waits until the oil has come down and the vat has been drained by the crew. [Frymaster commercial appliance repair](https://commercialappliancerepair.center/brands/frymaster/) More Frymaster codes [E13](https://commercialappliancerepair.center/error-codes/frymaster-e13/) [E16](https://commercialappliancerepair.center/error-codes/frymaster-e16/) [E18](https://commercialappliancerepair.center/error-codes/frymaster-e18/) [E19](https://commercialappliancerepair.center/error-codes/frymaster-e19/) [E25](https://commercialappliancerepair.center/error-codes/frymaster-e25/) [E28](https://commercialappliancerepair.center/error-codes/frymaster-e28/) [E33](https://commercialappliancerepair.center/error-codes/frymaster-e33/) [E39](https://commercialappliancerepair.center/error-codes/frymaster-e39/) [E41](https://commercialappliancerepair.center/error-codes/frymaster-e41/) [E42](https://commercialappliancerepair.center/error-codes/frymaster-e42/) [E44](https://commercialappliancerepair.center/error-codes/frymaster-e44/) [E53](https://commercialappliancerepair.center/error-codes/frymaster-e53/) [All 15 Frymaster codes](https://commercialappliancerepair.center/error-codes/#codes-frymaster) Temperature and alarms on other makes [Alto-Shaam E13](https://commercialappliancerepair.center/error-codes/alto-shaam-e13/) [Beverage-Air Hi](https://commercialappliancerepair.center/error-codes/beverage-air-hi/) [Blodgett Cavity High Temp Error](https://commercialappliancerepair.center/error-codes/blodgett-cavity-high-temp-error/) [Cleveland RESET light](https://commercialappliancerepair.center/error-codes/cleveland-reset-light/) [Continental Refrigerator HI](https://commercialappliancerepair.center/error-codes/continental-refrigerator-hi/) [Delfield Hi](https://commercialappliancerepair.center/error-codes/delfield-hi/) [Garland E04](https://commercialappliancerepair.center/error-codes/garland-e04/) [Hatco Control Board Overtemp](https://commercialappliancerepair.center/error-codes/hatco-control-board-overtemp/) [All 68 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-temperature) Frymaster 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 Frymaster's own words > High limit switch has opened. [Frymaster FilterQuick FQG30U easyTouch gas fryer manual with FQ4000 controller (error log codes, section 5.6)](http://fm-xweb.frymaster.com/service/udocs/Manuals/8197521.pdf) [Frymaster FilterQuick FQG30U easyTouch gas fryer manual with FQ4000 controller (error log codes, section 5.6)](http://fm-xweb.frymaster.com/service/udocs/Manuals/8197521.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. FQ4000 easyTouch touchscreen controller on FilterQuick fryers (FQG30U and related FilterQuick gas and electric models). Earlier Frymaster controllers show HELP HI-2 for a high limit that has tripped or failed. ## Frymaster E17 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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Leave the fryer off and let the oil cool without moving or draining it. If it comes back, it needs a visit. ### Is there a reset button for E17 on a Frymaster FilterQuick? The switch itself sits behind the panels with the frypot wiring, and Frymaster's guidance is to shut down and get service. A technician resets it only after finding why the oil ran that hot. ### Why did my Frymaster stop heating after an E17? Because the high limit is designed to lock the heat off until someone deals with it. The vat will stay cold, which is the safe outcome. ### Does E17 mean my Frymaster almost caught fire? It means the oil reached a temperature the fryer is built never to see in normal cooking. The backup did its job, which is exactly why the primary control must be checked before the next shift. --- **[Read on the site: Frymaster E17: the mechanical high-limit switch has opened](https://commercialappliancerepair.center/error-codes/frymaster-e17/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**