Yes I do it is winter here, as I have this 8400 thermostat wich I took a picture of it and I need help,filter is clean New batteries, top reading 73f , bottom says 74 &hit stays on check filter, and then when turning it up ,it says end,I need help to set it as the manual had gotten lost some where can I get info from you to get it started, I live way out in the county and by my self