BoilerFaultCodesYour boiler's flame is failing to stay lit or start properly when it needs to run at its lowest power setting.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Burner does not operate at or near minimum gas pressure
What causes this fault?
This fault occurs when the boiler struggles to maintain a steady flame while running at its lowest power level, often during the ignition sequence. The most common reasons are a malfunctioning gas valve that cannot regulate fuel flow accurately or worn ignition electrodes that fail to detect the flame, causing the system to shut down for safety.
This issue is more frequent during the first cold spells of autumn, when the boiler is asked to fire up after long periods of inactivity during the summer.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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