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

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.