E01
Brötje General burner fault (lockout)

E01 displayed, general burner lockout, red fault LED lit

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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

Repeated ignition failures, Flame loss, Faulty burner control module, Incorrect gas/air ratio

How to Fix / Troubleshooting

Safety: If the boiler repeatedly locks out, do not continue resetting without investigation.

  • 1. Reset once: Press the reset button and observe the ignition sequence. Note any unusual noises or smells.
  • 2. Check error history: Many Brötje controls allow viewing of the last faults. Use this to narrow down the cause (e.g., ignition, fan, sensor).
  • 3. Basic checks: Verify gas supply, system pressure, and that the flue is not blocked.
  • 4. Burner service: If E01 recurs, a full burner service (cleaning, electrode check, combustion analysis) by a Brötje technician is required.
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Repair Difficulty

Professional Required 5/5

Required Part

Burner Control Module
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