High
341 on Worcester Bosch Greenstar 28CDi

Your boiler is heating up much faster than it should, which has caused it to automatically shut down to prevent potential damage from overheating.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Temperature rise at boiler too rapid

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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