Low
H-- on Worcester Bosch Greenstar 12i System

Your boiler is operating normally and does not currently report any technical issues requiring attention or service.

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

No maintenance request messages available.

Engineer required

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

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