Home/Boiler Fault Codes/Ideal L6
IDEAL FAULT CODE
Ideal L6
The boiler has detected a flame present when there is no demand for heating or hot water — a potentially serious fault that can point to a faulty gas valve.
WHAT L6 TYPICALLY INDICATES
The boiler has detected a flame present when there is no demand for heating or hot water — a potentially serious fault that can point to a faulty gas valve.
WHAT TO DO
Treat this code as urgent. This is not a DIY fix — it requires a Gas Safe registered engineer to diagnose and repair safely.
A NOTE ON GAS SAFE REGISTRATION
Any work on the gas side of a boiler in the UK legally requires a Gas Safe registered engineer, it isn't optional. Our engineers are fully Gas Safe registered, and you're always welcome to ask to see ID on the day. This page is general information about what a fault code typically indicates; it is not a substitute for an engineer diagnosing your specific boiler.
Seeing Ideal L6 on your boiler?
Tell us the code and your postcode. A fully Gas Safe registered engineer will diagnose the actual cause before quoting a fix.
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