BoilerFaultCodesTechnical description
Loss of flame detected 5 times in 24 hours (with burner on).
What causes this fault?
This fault occurs when the boiler’s control system detects that the flame has gone out unexpectedly five times within a 24-hour period. It is usually caused by a component failing to accurately sense the flame, a blockage in the drainage system, or an inconsistent flow of gas prevented the burner from staying lit.
This fault is more frequent during freezing winter spells, as a frozen external condensate pipe can cause water to back up into the boiler and extinguish the flame.
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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