the 240 doesnt have a mode adjust it was a chip made specifically for that model, it does however have full range changeability in the lower buttons where the "2 auger" stoves are only effected on ranges 1-2.
as for the "d to C" change, the reason its running hotter is that its feeding more fuel setting for setting, though it doesnt "air balance" as well in some heat ranges in the pdvc model stoves. so it may "run rich" in some ranges
Thanks Mike for your reply----what effect will "run rich" have on durability and stress on my stove? what will indicate that it is running rich? Thanks- remember, I am a newbie here