Furnace Trouble-Shooting

[Byron Kinnaman]

Suggestion for the future -- If you have a problem that could be related to a blown fuse replace all fuses. It's cheaper and easier than replacing a bunch of other stuff then finding out it was a fuse all along.
My furnace quite working last winter. I removed all the fuses, and put a new fuse in for furnace and another 20 amp fuse.
Many fuses can appear OK when looked at but are not. Also the connection to fuse can get corroded. Removing and replacing will sometimes clean the contacts.

[Borrego Dave]

Originally Posted by Byron Kinnaman

Many fuses can appear OK when looked at but are not.

Exactly why I always use a meter on any ATC fuse after being fooled a couple times by looks.

[ZachO]

Agreed!

The fuse, though, was NOT the original issue. Was just the issue of it not running after the parts I replaced.