Operating The Boiler; Switch Off The Central Heating - Worcester GREENSTAR i SYSTEM User Manual

Wall hung rsf gas fired condensing system boiler
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CONTROLS
3.1

OPERATING THE BOILER

SETTING THE CENTRAL HEATING TEMPERATURE
1. Turn the central heating temperature control knob to the desired level.
Temperatures given in the figure below are approximate.
2. The Burner indicator (green) will illuminate to show that the boiler is running.
1.
Fig. 2
Central heating temperature control

3.1.1 SWITCH OFF THE CENTRAL HEATING

1. Turn the temperature control knob to the snowflake symbol to switch off the central heating.
1.
Fig. 3
Switch off central heating
8
2.
3
4
5
2
6
max
3
4
5
2
1
6
max
Min
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1
---
2
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3
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4
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5
---
6
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Max
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3
4
2
1
min
6 720 644 864a (2010/10)
40 °C
47 °C
53 °C
61 °C
68 °C
74 °C
80 °C
82 °C
reset
eco
e
6
max

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Questions and answers

Martin
March 11, 2025

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

User image 67cffd7aae42d
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.

This answer is automatically generated

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