Henny Penny OFE/OFG fryer Error Codes
Applies to: OFE/OFG open fryers. Compiled and paraphrased from Henny Penny's own operator documentation for the OFX 32X series open fryers, published on hennypennyhelp.com, with Computron control notes where they differ. Henny Penny Corporation, Eaton, Ohio. Other Henny Penny ranges use different code sets; confirm against the documentation for your model. Table last updated Aug 13, 2026.
How to read the codes
Henny Penny fryers announce a fault with an error code AND A CONSTANT TONE; press any button to silence it. Two things matter before matching a code. IF SEVERAL FAULTS EXIST, ONLY THE HIGHEST PRIORITY ONE IS SHOWN, so clearing one can reveal another underneath. And several codes carry a LETTER SUFFIX that changes the diagnosis entirely: E-6a is an open probe while E-6b is a shorted one, and the four E-20 variants point at four different parts. Read the letter, not just the number.
The codes
| Code | Meaning | Likely causes | Operator-safe steps | Technician work |
|---|---|---|---|---|
| E-4 | Control board overheating | Blocked side louvres or insufficient clearance around the fryer | Switch off and back on. If it returns, check the LOUVRES ON EACH SIDE of the unit for obstructions, which is usually something stored against the fryer rather than a fault | Clearances and control box ventilation before replacing anything |
| E-5 | Oil overheating | Heating circuit stuck on, or a temperature probe reading low | Switch off and back on. If it returns, stop using the fryer: overheating oil is a fire risk, not a cooking problem | Heating circuits and temperature probe |
| E-6a | Temperature probe OPEN circuit | Failed probe or a disconnected lead | Switch off and back on; if it returns, the probe needs checking | The suffix is the diagnosis: a is open, b is shorted. Check continuity accordingly |
| E-6b | Temperature probe SHORTED | Shorted probe or a pinched harness | As E-6a | Trace the harness for a short before condemning the probe |
| E-10 | High limit has tripped | Oil too hot, a contactor or burner locked on, the unit dry-fired, or oil level too low. On some models a switch opens above 425F and shuts off heat to the vat | Let the oil COOL, then reset by pushing and holding the red rocker reset switch for FIVE SECONDS. Henny Penny's own timing; a brief press will not do it. If it will not reset, the high limit itself needs replacing | Confirm why it tripped before resetting. Dry-firing and low oil level are on the manufacturer's cause list |
| E-15 | Drain switch failure, or the drain is open while the fryer is on | Drain handle left open, or a failed drain microswitch | Close the drain with the handle. The drain should only be open with the power switch OFF. If the code persists with the drain visibly closed, the microswitch is the fault | Drain microswitch and its wiring; also on the 24V circuit list for E-92 |
| E-20a | Air pressure switch stuck CLOSED (gas models) | Failed air switch | Press the Timer button to retry ignition. If it persists it is a service call | Air switch. Note the four E-20 variants are four different parts |
| E-20b | Draft fan or air pressure switch stuck OPEN (gas models) | Failed air switch or blower motor | Press Timer to retry ignition | Air switch or blower motor |
| E-20c | Ignition modules not responding (gas models) | Ignition module, spark ignitor or I/O board | Press Timer to retry ignition | Ignition module, spark ignitor, then I/O board |
| E-20d | Pilots not lit, or no flame sense (gas models) | Ignition module, I/O board or flame sensor | Press Timer to retry ignition. Also confirm the gas supply is actually on | Ignition module, I/O board, flame sensor |
| E-31 | Fan jumper wire missing | A jumper on the 12-pin connector is absent | No operator action, but worth reporting if the fryer has recently been serviced, because this is a reassembly fault | Check for the jumper wire on the 12-pin connector and add if missing |
| E-41 to E-46 | Programming failure | Control programming corrupted | Switch off and back on | Reinitialise via Special Program Mode; replace the control board if it persists |
| E-47 | Analog converter chip or 12-volt supply failure | I/O board or PC board failure | No operator action | Henny Penny gives a useful tell: if the speaker tones are QUIET, it is probably the I/O board rather than the PC board |
| E-48 | Input system error | PC board failure | No operator action | Replace the PC board |
| E-54 | PCB component failure | Board failure | Switch off and back on once | Replace the PCB if it persists |
| E-70 | Faulty power switch, its wiring, or the I/O board | Power switch or wiring failure | No operator action | Power switch and wiring first, then I/O board. On Computron 1000 controls, E-70a is a missing fan switch jumper and E-70d a missing MV jumper |
| E-92 | The 24-volt fuse on the I/O board has opened | A shorted component somewhere in the 24-volt circuit | No operator action | Do not simply replace the fuse. Henny Penny names the circuit to search: high limit, drain switch and air switch are all on it |
If this needs a fryer technician
5 companies in this directory name Henny Penny on their own site: that page shows who has been phone-confirmed, who publishes 24/7 cover, and what each puts in writing. Start there if the brand matters more than the city.
Two questions worth reading before you ring anyone: what to do first when a code appears and how to tell whether it is yours to fix.
Henny Penny also runs a technical support line for its own equipment. The number, and what they will and will not do for you, is worth reading before you ring: most will help a technician who is already on site and will not talk an operator through a repair.
Or browse fryers service companies by state:
Indiana: Evansville · Fort Wayne · Indianapolis · South Bend
Kentucky: Lexington · Louisville · Owensboro
Ohio: Akron · Canton · Cincinnati · Cleveland · Columbus · Dayton · Toledo · Upper Sandusky · Youngstown
Pennsylvania: Allentown · Altoona · Erie · Harrisburg · Lancaster · Pittsburgh · Scranton · Williamsport
West Virginia: Charleston · Clarksburg · Martinsburg · Morgantown · Parkersburg · Wheeling
Related: the PM checklist that prevents the most common codes outright, and the operator guides for symptom-first diagnosis.
Not sure this is the right make? The lookup by code shows every make that uses a given code, and flags the ones that mean different things depending on the machine in front of you.