Low
36 on Alpha Intec 50CS

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.

What the manual says

Manufacturer manual

BUS connection fault - Not used on this model

From this model's manual
Verified against the Alpha Intec 50cs installation & service manual, page 48.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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