mygirlsdad77
Oct 5, 2012, 09:14 PM
Which fuse. What model rheem? Many times there will be a 15amp 120v fuse located in an ssu switch box on or near the furnace. 24v fuses are normaly located on the control board, or in a plastic fuse link between the low voltage side of the transformer and the board. Your furnace may not even have any fuses, unless it shows them in the wiring diagram.