Henny Penny E-6B

What does Henny Penny E-6B mean?

E-6B signals a short circuit in the main temperature probe or its wiring. Unlike E-6A (open circuit), a shorted probe drives resistance to near zero, causing the control to read an implausibly low temperature. To prevent runaway heating based on a false reading, the control disables the heating system until the fault is corrected.

Symptoms

• Display shows E-6B and heating stops.
• Fryer shuts down immediately on startup.
• Control may display an abnormally cold temperature (near 32°F / 0°C) before shutting down.
• Error persists through multiple power cycles.

Common causes

• Temperature probe sensing element shorted internally due to moisture intrusion or physical damage.
• Two probe wires contacting each other inside a damaged section of insulation.
• Probe connector pins bridged by oil or cleaning chemical residue.
• Probe cable pinched by a panel or component, shorting the conductors.
• Water or condensation inside the probe connector causing a conductive bridge.

Diagnostic steps

1. 01

   Power cycle the fryer

   Turn the power switch OFF, wait 10 seconds, then turn back ON. If E-6B clears, monitor for recurrence; a one-time occurrence may indicate moisture that burned off.

2. 02

   Inspect the probe connector for contamination

   Disconnect the probe connector and inspect for oil, water, or residue bridging the pins. Clean with electrical contact cleaner and allow to dry before reconnecting.

3. 03

   Inspect the probe cable for physical damage

   Trace the probe wire from the vat to the control harness. Look for pinch points, melted insulation, or areas where two conductors are making contact.

4. 04

   Measure probe resistance

   Disconnect the probe and measure resistance across its leads. A reading near 0 ohms (short) confirms the probe element has failed; resistance should be approximately 100 ohms at 32°F (0°C) per the RTD chart.

5. 05

   Replace the temperature probe

   Install the manufacturer-specified replacement probe, routing the cable away from hot surfaces and pinch points to prevent recurrence.

When to call a professional

If replacing the probe does not clear E-6B, the control board input circuit may be shorted as well. A licensed technician must test the board-side wiring and harness with proper test equipment to isolate whether the board requires replacement and to avoid further damage to control electronics.