I have a Bryant Gas Furnace (Model 310AAV) that is less than a year old. There was a problem with the furnace not coming on and it was discovered that the 3 amp fuse on the control board was blown. A new fuse was installed, the furnace fired up, heat came on and ran for about 10 minutes, then the furnace shut off again. The new fuse had blown out. Installed new fuse #2 and, when the blower door was put back on, the fuse blew again. Had one more new fuse #3, installed it, manually pressed the blower door safety switch, there was a visible flash at the switch and fuse #3 was blown.
In a matter of 30 minutes, 3 new fuses were blown so still no heat. Is it possible that the blower door safety switch has gone bad so, when triggered, it blows the fuse? Can I, or should I, try a 5 amp fuse to see if that makes a difference?