First off it's not the sail switch or the motherboard or the igniter. it's a new issue to me. I have a 22 e19 and the Dometic heater has been a problem forever, first problem was a bad igniter. after that it worked well for the most part occasionally needing a restart after setting for awhile, but this is different. I turn on the thermostat and nothing when I open the hatch and realize it is kicking the blower sporadically. Not running and turning off as much as if someone where just touching a wire to power and immediately removing it, the blower runs not even half a second, and no error lights. I have tried checking wires, I have tried it on battery and shore power in case there was some voltage issue, I have changed out the motherboard with a known good board no change, and for chuckles I switched out the sail switch no change, checked the ground seems good. Bad reset switch? Anyone had this type of issue? I'm ready to rip this piece of crap and find an alternative. Any help or ideas would be appreciated.