Low
201 on Worcester Bosch Greenstar 12i System

Your boiler is currently heating your hot water cylinder, so it is working exactly as it should.

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.

Technical description

DHW cylinder system is being heated (only available when using the optional integral diverter valve kit).

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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