E2 — Heating water flow rate too low during calibration

What does E2 mean?

The burner is in a fault mode because the heating water flow rate detected during calibration is too low, indicating insufficient water circulation.

• Inadequate circulation volume in the heating system
• Boiler pump not providing sufficient flow
• Scaling or blockage within the heating system

Click steps to track your progress.

1. 1

   Press the reset button 'R' on the boiler.

2. 2

   Ensure the heating system is adequately filled and pressurized.

3. 3

   Check the circulation pump for proper operation and any unusual noises.

4. 4

   Contact a qualified heating technician to check for and remove scaling or blockages.