So for the last few days I have been running and this thing is trying to make me doubt myself. I get home and the house is a bit cool so I slide open the cover on my M55 insert and see that I am in auto/off mode but the heat setting is on #2 (using thermostat). I bumped it up to 3 which is where I thought I had it originally and off to my other distractions I go. All is well. Leave for work in the am, come home, same thing. Thermostat calling for heat, stove set on #2 in auto mode. Did it change itself or I am missing something with changing the high heat level? Hopefully I'm just being simple and missing a fairly obvious step.