E3
Bomann
Upper Heating Element Circuit Fault
Oven display shows E3, and the oven does not heat in any mode.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open circuit in the top heating element, Burned connector at grill element terminals, Broken wiring from the element to the relay on the control board, Faulty relay on the main control board
How to Fix / Troubleshooting
Safety: Turn off the circuit breaker or unplug the oven before opening any panels.
Inspection steps:
- Remove the oven from the cabinet sufficiently to access the rear panel. Then, remove the rear cover.
- Locate the upper (top/grill) heating element terminals. Check for burned or loose spade connectors.
- With the wires disconnected from the element, measure the resistance across the element terminals. A typical grill element has a resistance of 15–40 Ω. An open circuit (OL) indicates a failed element.
- Inspect the wiring from the element to the main control board for heat damage or breaks. Repair or replace any damaged wires.
- If the element and wiring are good, the relay on the main control board that drives the top element may be defective, and the board may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Upper Heating Element
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