BoilerFaultCodesYour boiler is failing to light because it isn't receiving enough gas to stay running safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Gas gas supply pressure inadequate at the appliance inlet during an ignition attempt
What causes this fault?
This fault occurs when the boiler detects that the gas coming into the unit isn't at a high enough pressure to safely maintain a flame. The most common reasons include a blockage in the gas pipes, a faulty regulator outside at your meter, or an internal component like the gas valve failing to open fully. To protect your home, the boiler automatically shuts down because it cannot guarantee a stable and clean burn.
This issue sometimes surfaces during the first cold snap of winter when gas demand across the local network increases, exposing pre-existing weaknesses in your home's regulator or pipework.
DIY fix possible
Ensure your gas stopcock is fully open.If you have a prepayment meter, check that you have sufficient credit.Check if other gas appliances, like a cooker, are working to confirm your gas supply is active.
Find a Gas Safe engineer
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