--- title: "Henny Penny E-4: the pressure fryer's control board is running hot" description: "What E-4 means on Henny Penny E-4: the pressure fryer's control board is running hots, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/henny-penny-e-4/" --- # Henny Penny E-4: the pressure fryer's control board is running hot On the PFE and PFG pressure fryers, E-4 is raised by the control electronics when the board behind the panel gets too hot. ## What E-4 actually means. On the PFE and PFG pressure fryers, E-4 is raised by the control electronics when the board behind the panel gets too hot. Henny Penny links it to blocked side louvers and, on units that have one, a cooling fan that has stopped moving air. Henny Penny commercial appliance display · also shown as CPU too hot What to do when E-4 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 Henny Penny Henny Penny equipment gets its visit once the unit is cool, any oil is down and the crew has logged the last load. ### Source Henny Penny FM05-011R operator manual, PFE 500 / PFE 561 / PFG 600 pressure fryers (C1000 and C8000 controls) Henny Penny PFE 500 and PFE 561 electric and PFG 600 gas pressure fryers with the C1000 or C8000 control (operator manual FM05-011R). ## Before you book, in this order. Each step comes from Henny Penny's own guidance for E-4 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Press any button to silence the alarm, then switch the fryer off and back on as the manual directs. 02 Clear boxes, towels and grease buildup away from the louvers on both sides of the cabinet. 03 Note whether the kitchen is unusually hot around the fryer, such as a charbroiler next to it with its heat shield missing. 04 If E-4 returns once the louvers are clear, book a visit so the board cooling fan and the control can be checked. ### 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 E-4 is not an oil temperature reading; hot shortening shows as E-5 instead. It also does not mean the high limit has opened, which is E-10. ## What you may notice with it. The commercial appliance problems E-4 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 Not Heating or Slow to Recover Between Baskets**](https://commercialappliancerepair.center/problems/commercial-fryer-not-heating/) - [**Restaurant Equipment Burning Smell: Scorched Oil, Hot Wiring or Lint**](https://commercialappliancerepair.center/problems/commercial-burning-smell/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where E-4 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/) ## Henny Penny commercial appliances. Henny Penny equipment gets its visit once the unit is cool, any oil is down and the crew has logged the last load. [Henny Penny commercial appliance repair](https://commercialappliancerepair.center/brands/henny-penny/) More Henny Penny codes [E-5](https://commercialappliancerepair.center/error-codes/henny-penny-e-5/) [E-6A](https://commercialappliancerepair.center/error-codes/henny-penny-e-6a/) [E-6B](https://commercialappliancerepair.center/error-codes/henny-penny-e-6b/) [E-10](https://commercialappliancerepair.center/error-codes/henny-penny-e-10/) [E-15](https://commercialappliancerepair.center/error-codes/henny-penny-e-15/) [E-20A](https://commercialappliancerepair.center/error-codes/henny-penny-e-20a/) [E-20B](https://commercialappliancerepair.center/error-codes/henny-penny-e-20b/) [E-20C](https://commercialappliancerepair.center/error-codes/henny-penny-e-20c/) [E-20D](https://commercialappliancerepair.center/error-codes/henny-penny-e-20d/) [E-25](https://commercialappliancerepair.center/error-codes/henny-penny-e-25/) [E-26](https://commercialappliancerepair.center/error-codes/henny-penny-e-26/) [E-27](https://commercialappliancerepair.center/error-codes/henny-penny-e-27/) [All 16 Henny Penny codes](https://commercialappliancerepair.center/error-codes/#codes-henny-penny) 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/) [Blodgett Com Error](https://commercialappliancerepair.center/error-codes/blodgett-com-error/) [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/) [All 58 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-board) Henny Penny 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 Henny Penny's own words > Control board overheating [Henny Penny FM05-011R operator manual, PFE 500 / PFE 561 / PFG 600 pressure fryers (C1000 and C8000 controls)](https://www.hennypenny.com/wp-content/uploads/2013/12/FM05-011R_PFE-500-561-PFG-600_C1000-C8000_Ops_GM_EN.pdf) [Henny Penny FM05-011R operator manual, PFE 500 / PFE 561 / PFG 600 pressure fryers (C1000 and C8000 controls)](https://www.hennypenny.com/wp-content/uploads/2013/12/FM05-011R_PFE-500-561-PFG-600_C1000-C8000_Ops_GM_EN.pdf) [Henny Penny FM05-011R operator manual, PFE 500 / PFE 561 / PFG 600 pressure fryers (C1000 and C8000 controls)](https://www.hennypenny.com/wp-content/uploads/2013/12/FM05-011R_PFE-500-561-PFG-600_C1000-C8000_Ops_GM_EN.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Henny Penny PFE 500 and PFE 561 electric and PFG 600 gas pressure fryers with the C1000 or C8000 control (operator manual FM05-011R). ## Henny Penny E-4 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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Press any button to silence the alarm, then switch the fryer off and back on as the manual directs. If it comes back, it needs a visit. ### Why does my Henny Penny pressure fryer show E-4 in the middle of a lunch rush? A board that sits beside a hot fryer vat depends on air flowing through the side louvers. During a rush the line is at its hottest, so a partly blocked louver or a tired fan often shows up first at that time. ### Can I keep frying while a Henny Penny shows E-4? Treat it as a stop. Silence the alarm, power the fryer down and back up, and clear the louvers; if the code comes straight back, the electronics are at risk and the fryer should wait for a technician. ### Does E-4 on a Henny Penny mean the board needs replacing? Not by itself. Henny Penny first points to airflow around the board, and only a repeat after the louvers and fan are cleared suggests a board or fan part. --- **[Read on the site: Henny Penny E-4: the pressure fryer's control board is running hot](https://commercialappliancerepair.center/error-codes/henny-penny-e-4/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**