Furnace Circuit Board Fuse Keeps Blowing

Ac went down replaced said fuse and unit worked again for a few days then the fuse failed again.

Furnace circuit board fuse keeps blowing. The guy has a new condensing unit installed last year. Can you guys point me in right direction to figure this one out. He just called and told me fuse is blown again. Blowing low voltage fuse breaker trip control wiring troubleshooting i ve got a 5 amp fuse that keeps popping on a circuit board.

Here s how to diagnose a low voltage short. My ruud furnace achiever 90 plus keeps blowing the 3 amp fuse on the ifc circuit board. There could be several reasons why air conditioner keeps blowing fuse in circuit board. Why air conditioner keeps blowing fuse in circuit board.

This can be the sign of an electrical problem putting you at risk of a serious fire. If you have been experiencing electric furnace problems specifically the furnace fuse blows when the heat turns on throughout the holiday season you might have assumed the problem is those cheap holiday string lights. You need to find the root cause of the blown fuse on the furnace circuit board before. The voltage out of the transformer reads 26 3 volts.

Furnace fuse keeps blowing. Fuses are very sensitive to overload and so they overheat extremely fast. If the fuse keeps popping in your air conditioner you have a 24 volt short. I am still popping fuses and reading over 24 volts.

After resetting the circuit breaker and replacing the fuse if the fuse keeps blowing there might be an electrical short in the electrical system that supplies the electricity to the furnace. Sometimes the blown fuse in the furnace comes from a malfunctioning transformer. The furnace fuse keeps blowing. Its just being used for cooling right now.

This guide to electric furnace troubleshooting explains the common causes and fixes. If you fix the fuse once and it immediately blows again you have a much larger problem on your hands that seriously needs to be addressed. Now read more.