Thanks very much for your replies.
It’s the top picture - the outside sensor. At a loss why it would be fitted inside or what impact it would have? Thanks
hi I would be very grateful
for any advice/info. I have discovered today that a heating engineer has installed what I think is an outside sensor for a combi boiler inside next to a hot water tank- don’t have a combi. I have no idea why this would be done or of any impacts on the system? Asked...