What does the Ideal L6 fault code mean?
The Ideal L6 fault code indicates a false flame lockout, which occurs when the boiler detects a flame when it should not be present. This safety feature prevents the boiler from operating under potentially dangerous conditions.
Common Causes
- Faulty Flame Sensor: A malfunctioning flame sensor may incorrectly signal that a flame is present, leading to a lockout.
- Gas Supply Issues: Insufficient gas supply or pressure can cause the burner to operate erratically, triggering the false flame detection.
Can I fix it myself? (DIY)
This fault typically involves gas and internal components, so it is essential to call a Gas Safe Engineer to diagnose and repair the issue safely.
Estimated Repair Cost (2026 UK Prices)
The estimated cost for resolving an L6 fault may range from £150 to £250, depending on whether the flame sensor needs replacement or if adjustments to the gas supply are required. Labor costs are typically around £80 to £120 for a qualified engineer.