High
Gas injectors plugged on Biasi Prisma

Your boiler has stopped working because the small nozzles that deliver gas to the burner have become blocked, preventing the flame from starting safely.

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

Blocked injectors causing a lock state.

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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