Worcester GREENSTAR i SYSTEM User Manual page 19

Wall hung rsf gas fired condensing system boiler

Hide thumbs Also See for GREENSTAR i SYSTEM:

Installation, commissioning and servicing instructions (72 pages)

Table Of Contents

Table of Contents

DRAUGHTS

Try to ensure that draughts around doors, windows, letterboxes and keyholes etc. are

reduced by using a suitable draught excluder.

WARNING: AIR VENTS

B Do not block or seal any air vents that are installed to ensure that the central heating

boiler operates safely.

CURTAINS

Lined curtains, or heavier full length curtains can provide excellent insulation. However,

always ensure that the curtains do not drape over radiators.

6 720 644 864a (2010/10)

TIPS ON ENERGY SAVING

Table of Contents

Show Quick Links

Hide quick links:

Table of Contents

Need help?

Do you have a question about the GREENSTAR i SYSTEM and is the answer not in the manual?

Questions and answers

Martin

March 11, 2025

I can’t get my green star I to stay operating it keeps turning off

1 comments:

Mr. Anderson

March 11, 2025

The Worcester Greenstar i System boiler may keep turning off due to several possible reasons:

1. No Power – Check if the boiler has a permanent mains supply. Inspect Fuse F1 (2.5A) or Fuse F3 (0.5A) and the transformer. If faulty, replace the control board.

2. No Live Demand – Ensure there is a live demand at ST10-L from an external room thermostat or timer. Some older thermostats may not return proper voltage.

3. Diverter Valve Issue – If the boiler operates without a live demand signal, check that no permanent live feed is present at ST10-L from another source.

4. Incorrect Piping – Ensure the cold inlet and DHW outlet are correctly piped and not crossed.

5. Flow Turbine Issue – If the boiler is not operating during hot water demand, test the flow turbine.

Further troubleshooting may require checking the control board and other electrical components.