egreene
Jan 5, 2009, 03:37 AM
What are some causes of blown fuses in the inside unit of a heat pump? I had a blown fuse in the heat pump, replaced the fuse and the unit worked fine and heated the house up and blew the fuse again after an hour or so. I vaccumed out the inside unit sprayed contact cleaner on the contacts and replaced the fuse again, and the same thing, ran an hour or so and blew again. It's a 5amp fuse and a Payne unit