Low
202 O on Worcester Bosch Greenstar 30i

Your boiler has temporarily paused its burner to prevent it from switching on and off too frequently, which helps protect the system from unnecessary wear.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait 15 to 20 minutes for the anti-cycle timer to finishCheck that your room thermostat is turned up higher than the current room temperatureEnsure at least two radiator valves are fully open to allow heat to dissipate

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Related fault codes

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