High
36 on Alpha E-Tec Plus 24

Your boiler's electronic control system is showing an error that doesn't apply to this specific model, suggesting a potential software glitch or a loose internal communication wire.

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

BUS connection fault - Not used on this model

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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