Carrier Furnace Circuit Board Fuse

30 and 40 year old furnaces we see still out in the field have these relays and switches.

Carrier furnace circuit board fuse.

But the furnace will not ignite or run. He then determined it blew my carrier thermidistat. Replaced box 311 read more. In many cases our carrier high efficiency furnaces also include technology that can produce enhanced comfort benefits and quieter operation as well.

Let s say you determine your carrier furnace circuit board has gone bad. Inspect the fuse or fuses to determine which fuse has failed. I have a carrier furnace the furnace will not kick on. If someone is poking around your furnace and is not too careful they could more wires so that they come into contact with the furnace s wire frame causing them to short and blow the fuse on the furnace board.

A thin metal bar visible through a glass window on a screw fuse or viewed from the side on a plastic buss fuse will be broken on a failed fuse. Some people call it a control board but whatever you call it you need a new one. After putting my old honeywell ct3600 t stat back on the system ran fine for a few hours then blew the fuse again upon the start of a cycle. Your furnace s control board has a separate fuse that protects it from getting too hot.

Carrier model 58sx100 cc 1 series 150 serial 5186a10020. If you pull the 3amp fuse out then the fan will kick on. I have replacd the circuit board and nothing. Condensate collector box rotted out and leaked water onto circuit control board shorting it out and tripping circuit breaker.

Electric furnace thermostat control wire. There may be a number of fuses depending on the furnace system. Just enter your carrier model number in our parts finder choose your shipping options and purchase the. Current high efficiency furnaces can be rated up to 98 5 afue which can reduce utility costs over the life of the furnace.

What else could it be. Model number is xxxxx or o for last letter. Printed circuit boards these days are composed of shrunk down relays and switches mounted on a rigid green board to orchestrate the sequence of operations that start up the furnace and gives us heat.