Thermistor
Common temperature-sensing fault part. Confirm resistance range and connector.
Henny Penny Fryer Error Codes — What They Mean
Henny Penny manufactures pressure fryers, open fryers, and combi cooking equipment for fast food chains and foodservice operations. Their SmartTouch and analog controllers display fault codes when problems occur.
| Code | Meaning | Urgency |
|---|---|---|
| E-1 | Thermocouple/sensor fault | High |
| E-2 | High temperature limit | Critical |
| E-3 | Ignition failure | High |
| E-4 | Hi-limit cutout tripped | Critical |
| E-5 | Pressure switch fault (pressure fryers) | High |
| E-7 | Heater element fault (electric models) | High |
Most Common Henny Penny Faults and Fixes
E-1 — Thermocouple Fault
The oil temperature thermocouple has failed or its connection is open. Test thermocouple millivoltage output at temperature. Replace if out of spec or open circuit.
E-2 / E-4 — High Temperature / Hi-Limit
Oil exceeded safe temperature or the mechanical hi-limit tripped. Do not restart. Check thermostat, gas valve, and heat input system before resetting. E-4 requires manual reset at the hi-limit device after cooling.
E-3 — Ignition Failure
Gas ignition failed within the trial-for-ignition period. Check gas supply, pilot flame (if applicable), igniter operation, and gas valve. Gas pressure typically 3.5-5” WC for natural gas.
E-5 — Pressure Switch (Pressure Fryers)
The lid pressure switch didn’t confirm correct lid seal or pressure. Check lid gasket condition and seating. Verify pressure switch operation.
Parts Often Needed
| Part | Notes |
|---|---|
| Thermocouple | Henny Penny OEM — type K typically |
| Hi-limit thermostat | Manual reset type — replace if won’t hold |
| Lid gasket | For pressure fryer E-5 — replace if cracked |
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Need Replacement Parts?
Before ordering, match the refrigeration part to the model number, electrical rating, and failure symptom. Check current prices on Amazon - prices and availability change frequently.
When to Call a Pro
E-2/E-4 high temperature events require root cause investigation before returning to service. Gas work requires a certified technician.