BoilerFaultCodesYour boiler has shut itself down for safety because it detects a serious internal issue that is preventing it from running properly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: The safety devices have been activated (lockout)
What causes this fault?
This fault occurs when the boiler's internal computer detects a major hardware failure or a safety circuit has been triggered, forcing the unit to shut down immediately. The most common reasons include a faulty electronic control board or a malfunction in the ignition system that prevents the gas from lighting safely. It essentially means a critical component is no longer communicating correctly or has failed a safety check.
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.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like E14 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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