High Lockout
A64 on Ferroli BlueHelix Pro 32C

Your boiler has been manually reset too many times in a short period and has now locked itself out for safety.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Maximum number of consecutive resets exceeded

What causes this fault?

This fault occurs when the boiler has been manually reset five times within a 15-minute window, causing the system to lock down as a security measure. It is usually triggered because an underlying issue, such as a failure to ignite or a flame sensing problem, led the user to keep pressing the reset button. The boiler stops responding to prevent potential damage or safety risks from repeated failed start-up attempts.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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