Fault EB — Insufficient heat transfer or combustion controller calibration issue (burner blocked)

What does EB mean?

Fault EB signifies a problem with heat transfer or an issue during the automatic calibration of the combustion controller, leading to the burner being blocked. This means the boiler cannot operate until the issue is resolved and reset.

• Inadequate heat transfer
• Faulty ionization electrode gap
• Incorrect gas type allocation (coding address 82)
• Incorrect gas train setting
• Flue gas system issues (e.g., recirculation)

Click steps to track your progress.

1. 1

   Ensure adequate heat is being drawn off from the boiler (e.g., turn up thermostats).

2. 2

   Press the reset button (R) on the boiler control unit.

3. 3

   Check the gap between the ionization electrode and the burner gauze assembly.

4. 4

   Verify the correct gas type allocation in coding address 82 and the gas train setting.

5. 5

   Inspect the flue system for any blockages or issues that might cause flue gas recirculation.