BoilerFaultCodesTechnical description
Ignition sequence
What causes this fault?
This code appears when the boiler's control system sends a signal to generate a spark and open the gas valve simultaneously. It is a natural part of the start-up process where the appliance attempts to establish a flame to satisfy a demand for heat. If the boiler stays on this code without firing, it usually means there is a temporary struggle to sense the flame or a delay in gas reaching the burner.
DIY fix possible
No action is required as this is a normal operational status message.If the boiler stays on this code without firing, try a simple reset.Ensure your external controls (thermostat) are calling for heat.If the code persists for long periods, contact a Gas Safe engineer to check ignition components.
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