I just realized we are all going down the wrong path.
Says you.... Lol!
If the LS switches are "limit switches" or over loads, I stick with my last post. Based on the amp loads, L1 grounded out between relay and HEAT 1, LS 3 is tripped or defective. LS 1 and 2 are still closed possibly welded together. As for the relay, may be defective with L1 is open and L2 of the relay is welded. That would explain the goofy readings and why the breaker did not trip
