Low
201 O on Worcester Bosch Greenstar 30i

Your boiler is currently working to provide hot water to your taps and this code is simply a status update rather than a fault.

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 hot water 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

Check if a hot water tap is currently turned on somewhere in the houseClose any open hot water tapsWait a few moments for the boiler to return to standby mode or heating mode

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