Ok so I'm posting this for a buddy of mine. To say I'm computer challenged, well compared to him I'm a friggin wizz ! Anyways here we go... working on a 2016 Impact with a Atwood model AFMD35121 furnace. Issue being it will run fine on shore or gen-set power but not 12v. Have already replaced the "sail" as will as the high limit switch's. Bat's are new this season & have 13.2 volts with no draw. I'm still leaning with a bat issue. He doesn't have an amp meter to ck that while its under load. Any thoughts / ideas are always helpful.
B/R
Bingo
