BoilerFaultCodesYour boiler has shut itself down for safety because a internal limit or protection switch has been triggered.
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 safety sensors detect that the unit has exceeded its safe operating temperature limit. The most common reasons for this include a lack of water flow, a blockage in the heat exchanger, or a pump that has failed or become stuck. As a precaution, the system shuts down immediately to prevent damage to the internal components.
This fault is more frequent when the heating is first turned on in autumn, as pump components can seize up after being inactive throughout the summer.
DIY fix possible
Locate the reset button or selector switch on the control panelTurn the selector to the 'OFF/RESET' position and wait for 5 secondsTurn the dial back to the 'ON' position to restart the boiler
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A boiler cover plan would cover faults like E11 — 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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