BoilerFaultCodesTechnical description
Safety relay does not open
What causes this fault?
This fault occurs when a critical internal electrical component, known as a safety relay, becomes stuck in the closed position on the control board. The boiler detects that it can no longer physically cut the power to vital components if it needed to, so it shuts down as a protective measure. The most common reason for this is electrical wear and tear or a hardware failure within the boiler's main control box.
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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