Maintaining Your Boiler - Worcester GREENSTAR i SYSTEM User Manual
Wall hung rsf gas fired condensing system boiler
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MAINTAINING YOUR BOILER
6
MAINTAINING YOUR BOILER
Your new gas-fired boiler represents a long term investment in a reliable, high quality product.
In order to realise its maximum working life, and to ensure it continues to operate at peak efficiency
and performance, it is essential that your boiler receives regular servicing and maintenance checks
from a competent person beyond the initial 2 year guarantee period.
If you would like to know more about a Worcester, Bosch Group service contract, please tick the
appropriate box on your warranty registration card.
If your gas-fired boiler should fail to operate correctly or requires servicing please contact Worcester,
Bosch Group Appointments Team (see rear cover for details).
Details of the boiler including the Gas Council number can be found under the controls covers flap on
the boiler.
The Gas Council number is also listed on the front cover of your Installation, Commissioning and
Servicing Instructions.
14
6 720 644 864a (2010/10)
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Questions and answers
I can’t get my green star I to stay operating it keeps turning off
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.
This answer is automatically generated