BoilerFaultCodesTechnical description
Burner Injector – Natural Gas Stereomatic, Type 7, Rs1/8 4.95mm
What causes this fault?
This fault occurs when the boiler detects an unexpected signal from the burner, often suggesting gas is present when it shouldn't be or a sensor is malfunctioning. It is usually caused by a failing gas valve that isn't closing properly or a faulty set of electrodes failing to monitor the flame correctly. The system shuts down immediately as a safety precaution to prevent unburnt gas from building up.
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.
Find a Gas Safe engineer
Search the official register →