--- title: "Henny Penny E-20B: draft fan or air switch not proving airflow" description: "What E-20B means on Henny Penny E-20B: draft fan or air switch not proving airflows, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/henny-penny-e-20b/" --- # Henny Penny E-20B: draft fan or air switch not proving airflow The draft fan has to push enough air to close the air pressure switch before the gas valve opens. ## What E-20B actually means. The draft fan has to push enough air to close the air pressure switch before the gas valve opens. When that proof never arrives, from a fan that has stopped, a blocked flue or a switch stuck open, the control shows E-20B. Henny Penny commercial appliance display What to do when E-20B shows on the commercial appliance ### Kind of code Ignition and gas The unit tried to light and never proved a flame, or lit and then lost it. On a fryer, a griddle, a combi or a gas tumbler the ordinary reasons come first: the gas valve at the unit left partly closed after cleaning, a quick-disconnect hose not fully seated, an igniter crusted with grease or lint, a flame sensor or thermopile that no longer reads the heat, or a draft from a hood or a door pulling the pilot away. Checking the valve and running the reset the manual names are fair; if you smell gas, get everyone out first, and the gas valve, the sensor and every fitting stay with a technician. ### Usually leads to Commercial cooking line gas repair Griddles, charbroilers, restaurant ranges and hot tops: pilots, burners, orifices, valves and hoses, leak-checked after. ### 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 PFG 600 gas pressure fryer with the C1000 or C8000 control (operator manual FM05-011R); gas models only. ## Before you book, in this order. Each step comes from Henny Penny's own guidance for E-20B on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Press the Timer button to retry ignition once. 02 Listen for the draft fan when the fryer calls for heat and note whether it runs. 03 Book a visit if E-20B returns; the blower motor and air switch are inside the fryer. ### Still there? It usually turns into [commercial cooking line gas repair](https://commercialappliancerepair.center/services/commercial-cooking-line-gas-repair/). Book with the code and the model number. ### What not to do E-20B is about airflow proof, not flame; an E-20D is when air is proven but the burner does not light. A switch reading closed before the fan runs is E-20A. ## What you may notice with it. The commercial appliance problems E-20B 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/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where E-20B usually leads ## Commercial cooking line gas repair. **Cooking line pilot, thermocouple, burner or orifice, safety valve, griddle thermostat, regulator or quick-disconnect hose, leak-checked · low to moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/commercial-cooking-line-gas-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-4](https://commercialappliancerepair.center/error-codes/henny-penny-e-4/) [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-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) Ignition and gas on other makes [Alto-Shaam E89](https://commercialappliancerepair.center/error-codes/alto-shaam-e89/) [Frymaster E28](https://commercialappliancerepair.center/error-codes/frymaster-e28/) [Pitco HEAT FAIL](https://commercialappliancerepair.center/error-codes/pitco-heat-fail/) [Rational Service 32.1](https://commercialappliancerepair.center/error-codes/rational-service-32-1/) [Vulcan IGNITION LOCKOUT](https://commercialappliancerepair.center/error-codes/vulcan-ignition-lockout/) [Wolf Commercial IGNITION light](https://commercialappliancerepair.center/error-codes/wolf-commercial-ignition-light/) [All 12 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-ignition) 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 > Draft fan or air pressure [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 PFG 600 gas pressure fryer with the C1000 or C8000 control (operator manual FM05-011R); gas models only. ## Henny Penny E-20B 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 the Timer button to retry ignition once. If it comes back, it needs a visit. ### Why did my Henny Penny PFG 600 show E-20B after the hood was cleaned? A flue or exhaust area left partly covered can starve the draft fan. Check that the back of the fryer is clear before retrying. ### Is E-20B a gas leak? No. It means the fryer did not prove airflow, so it held the gas valve closed. If you smell gas at any point, shut the gas off and get everyone out. ### What part usually fixes E-20B on a Henny Penny? It is either the blower motor or the air switch. A technician tests which one before ordering. --- **[Read on the site: Henny Penny E-20B: draft fan or air switch not proving airflow](https://commercialappliancerepair.center/error-codes/henny-penny-e-20b/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**