BoilerFaultCodesTechnical description
Flame Loss
What causes this fault?
This fault occurs when the boiler successfully lights but the internal sensors cannot confirm a steady flame is present, causing the system to shut down for safety. It is often caused by a worn-out component that monitors the burning gas or an inconsistent supply of fuel and air reaching the burner.
This issue can become more frequent during extreme cold spells if the external gas regulator or pipework is affected by freezing temperatures, restricting the flow of gas.
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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