F13 High
Your boiler has shut down because too many reset attempts were made remotely or via the interface, and it now requires a manual reset or investigation to ensure it is safe to run.
Technical description: Remote reset lockout
Typical repair cost: £0-120 (including labour)
DIY fix possible
Locate the reset button on the boiler control panel.Press and hold the reset button for five seconds.Wait for the boiler to restart; if the code returns immediately, do not attempt further resets and call a professional.
Protect yourself from future repair bills
A boiler cover plan would cover faults like F13 — no call-out fees, no surprises.
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Parts commonly replaced
- Control Board
- External Thermostat/Controller
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