Not read through all the posts to check if this has been discussed (and AFAICS the forum can't search a single thread), but it isn;t mentioned in the manual
I notice that the mode setting is retained after power-off. Although this can be useful it can also be annoying, especially if the meter isn't used often. It would also be a pain for a meter that was shared by several users, or used by someone unfamiliar with it.
AFAICS there is no option to make it always power up in a consistent mode - I think this would be a useful addition.