BoilerFaultCodesYour boiler has lost its electronic connection to the gas valve, meaning it cannot safely ignite to provide heating or hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Gas valve connection fault
What causes this fault?
This fault occurs when the boiler's main control board loses the ability to communicate with the gas valve, which is the component responsible for fueling the burner. The most common reason is a loose or damaged wiring connection between these two parts, or an internal electronic failure within the gas valve itself.
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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A boiler cover plan would cover faults like E15 — no call-out fees, no surprises.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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