S.3 — Heating Mode Ignition Problem (EcoTEC 65kW)

What does S.3 mean?

This error indicates that the EcoTEC 65kW boiler is experiencing a problem igniting the burner while in heating mode.

• Ignition fault
• Gas supply issue

Click steps to track your progress.

1. 1

   Confirm your gas supply is active by checking other gas appliances.

2. 2

   Ensure the condensate pipe is not frozen, especially if it's an external pipe.

3. 3

   Restart the boiler by switching it off and on at the main power.

4. 4

   If ignition continues to fail, contact a qualified heating engineer to inspect the ignition components.