Low
202 on Worcester Bosch Greenstar 8000 Life Combi

Your boiler is temporarily resting to prevent it from turning on and off too frequently, which helps protect the internal components from unnecessary wear.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Boiler in anti-cycle mode

From this model's manual
Verified against the Worcester Bosch Greenstar 8000 Life Style installation & service manual, page 75.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

What causes this fault?

This occurs when your boiler reaches its target temperature too quickly and enters a protective rest period to avoid 'short-cycling'. It usually happens because the heat produced by the boiler cannot be moved away fast enough, often due to radiators being turned off or a highly efficient home needing very little energy. The boiler stays off for a few minutes to protect its internal parts from the mechanical stress of constant restarting.

This is more common during the milder months of spring and autumn when your home requires only a small amount of heat to maintain its temperature.

DIY fix possible

Check that your room thermostat is set higher than the current room temperatureEnsure all radiator valves (TRVs) are turned open to allow heat to circulateWait up to 15 minutes for the anti-cycle timer to expire and the boiler to restart automatically

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