P32 Low

Alpha P32 Fault Code

The Alpha P32 fault code means: your boiler has detected that the central heating temperature setting has been adjusted below its allowed minimum level.. It appears on 2 Alpha models in our database.

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: CH min. set point

DIY fix possible

Check your boiler control panel or external thermostat settings.Increase the central heating temperature set point to a standard level above 30 degrees Celsius.Restart the boiler using the reset button if it does not automatically resume operation.

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Alpha models that show the P32 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Alpha P32 fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026