It depends......doesn't it always?
There is a single preset, the last value you (or for the initial use, the factory) used. You can use that one (like most of us do) or dial it up or down. A small point, but it doesn't always start at the bottom for instance.
In practice I think one of the seven steps in Solo I, which are 'only' 9 degrees F apart, works just fine unless you change your technique, in which case you have to change things in either case?
Kick back and enjoy Solo for what it is, as
@ataxian suggests. You won't be disappointed.
OF