High
Flame does not persist on Worcester Bosch Greenstar 15i System

Your boiler safely shut itself off because it could not keep the flame lit to heat your water and radiators.

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

Reverse live/neutral polarity, faulty sense electrode, or dirty burner ports

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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