BoilerFaultCodesTechnical description
Current fault: Fault code (table 10.1.2)
What causes this fault?
This fault occurs when the boiler's main control board loses touch with the internal components it needs to manage, often due to a breakdown in electronic communication. The most common reason is a malfunction within the Printed Circuit Board itself or a loose connection in the wiring harness that carries signals throughout the unit. Because the 'brain' of the boiler can no longer verify that it is safe to operate, it stops the system from firing up.
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.
Find a Gas Safe engineer
Search the official register →