S.20 — DHW Mode Burner On Status (EcoTEC Pro / EcoTEC Plus)

What does S.20 mean?

This is a normal status message indicating that the EcoTEC Pro / EcoTEC Plus boiler's burner has successfully ignited and is actively producing domestic hot water.

• Normal burner operation for DHW

Click steps to track your progress.

1. 1

   This is typically a normal operating status and requires no action if hot water is being produced.

2. 2

   If no hot water is being produced despite this status, restart the boiler.

3. 3

   Check hot water demand settings on your controls.

4. 4

   If concerns arise, contact a qualified heating engineer.