Digital Bradley smoker display shows E4 and unit shuts down or will not start a heating cycle.

Safety first: Unplug the smoker and allow all components to cool. Do not bypass safety devices.

Steps to address E4:

• Inspect control box location: Ensure the control box is not covered or exposed to direct high heat from another appliance. It must have airflow around it.
• Check for visible damage: Remove the control box cover and look for burnt components, melted plastic, or a burnt smell. If present, the control box should be replaced rather than repaired by a homeowner.
• Inspect heating element: Examine the heating element for cracks, burn‑through, or signs of shorting to the metal frame. A shorted element can trip internal protection.
• Test element resistance: With the smoker unplugged and element leads disconnected, measure resistance across the element. A very low reading (near 0 ohms) or continuity to ground indicates a shorted element that must be replaced.
• Replace faulty parts: Replace the heating element if shorted. If the element is normal but E4 persists, replace the digital control box assembly.

If you are not comfortable testing live circuits, contact a qualified appliance technician.