S.04 — Heating Mode Burner Ignited Status (EcoTEC Pro / EcoTEC Plus)

What does S.04 mean?

This is a normal status message indicating that the EcoTEC Pro / EcoTEC Plus boiler's burner has successfully ignited and is actively producing heat for the central heating system.

• Normal burner operation

Click steps to track your progress.

1. 1

   This is typically a normal operating status and requires no action if your heating is working.

2. 2

   If the heating is not working despite this status, try resetting the boiler.

3. 3

   Check your thermostat settings to ensure heat is demanded.

4. 4

   Contact a qualified heating engineer if there's no heat with this status.