Low
36 on Alpha H25 Xtraflame

Your boiler is displaying a communication error that shouldn't exist on this specific model, suggesting a temporary glitch in its internal computer system.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

BUS connection fault - Not used on this model

DIY fix possible

Switch the boiler off at the power supply for 30 secondsTurn the power back on to allow the boiler to perform a full system resetCheck if the error code clears from the display

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