GaryS1953 wrote:
BFL13 - the furnace THOUGHT he had it narrowed down the gas valve, because the fuse only blew at the time the gas valve should opened the flame ignite. We never smelled gas and it didn’t ignite.
Got it, thanks.
Ok all I can think of is as above, the fan ran ok, sail switch closed and boom!
So check all those many wires on the blades to see if one has come off. I can't see where anything else can be shorted .
The big thing is in the first event, the 12v was ok until after the fan was running. So no short till then anyway. Next event is the sail switch closes, making more 12v positive wires after that come alive.
