ERR>07 Low

Alpha ERR>07 Fault Code

Also written as ERR07 — same fault.

The Alpha ERR>07 fault code means: your boiler is currently in a manual testing mode used by engineers to check system performance, rather than indicating a genuine breakdown.. It appears on 18 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: Chimney sweep mode active (not a fault)

DIY fix possible

Locate the chimney sweep button on the control panelPress the button again to exit the modeTurn the boiler off at the mains power switch for 30 seconds and switch it back on

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Alpha models that show the ERR>07 fault code

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

Source

Alpha ERR>07 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 27 April 2026