No Heat

Dryer was heating fine earlier, now no heat. I have replaced main board, idler pulley, belts, humistat, door switch, rollers, etc. i have a thermistor that i purchased a couple weeks ago when one time an E1 code flashed. However, the code didnt come back so i didnt replace it yet, is this something that would cause no heating. all other components appear ok after going through diagnostics. thanks, this dryer is a pile of junk