BoilerTool
Home / Greenstar 1000 Combi / 2948
2948

No flame signal with low output

Worcester Bosch Greenstar 1000 Combi

Category
B
Remedy
The burner starts automatically after purging. It may cause strong winds.
▶ If the fault occurs repeatedly: check the settings of the CO2 values.
▶ Check the flue integrity.
▶ Check the flue terminal.
This code also applies to:
hello@boilertool.co.uk
© 2026 BoilerTool