Now that the heating has been on more, I’ve started bleeding radiators a couple of times a week, and getting air out of one of the top floor radiator each time.
Displaying the extent of the error flagged by the Axioma heat meter is a great addition but can someone explain why, in the screenshots below, does it show errors for 11 minutes for the last 24 hours but errors for 18 minutes for a smaller window (of less than 1 hour) within the last 24 hours?

