Low
5.0 on Worcester Bosch Greenstar R29 40 HE

Your boiler is currently running at its maximum heating capacity and is effectively notifying you that it is working hard to meet a high demand for warmth.

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

Max. heating output

Engineer required

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

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