Carrier Furnace Circuit Board Fuse

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.

Carrier furnace circuit board fuse.

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. Your furnace s control board has a separate fuse that protects it from getting too hot. Electric furnace thermostat control wire. There may be a number of fuses depending on the furnace system.

If you pull the 3amp fuse out then the fan will kick on. I have a carrier furnace the furnace will not kick on. But the furnace will not ignite or run. Just enter your carrier model number in our parts finder choose your shipping options and purchase the.

What else could it be. Replaced box 311 read more. He then determined it blew my carrier thermidistat. Inspect the fuse or fuses to determine which fuse has failed.

Twice in less than a 12 hour period my carrier 58cva furnace blew the 3 amp fuse in the control board. 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. Let s say you determine your carrier furnace circuit board has gone bad. Carrier model 58sx100 cc 1 series 150 serial 5186a10020.

Current high efficiency furnaces can be rated up to 98 5 afue which can reduce utility costs over the life of the furnace. Condensate collector box rotted out and leaked water onto circuit control board shorting it out and tripping circuit breaker. Model number is xxxxx or o for last letter. The first time it blew the technician replaced the fuse and the system still wouldn t start.

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. Some people call it a control board but whatever you call it you need a new one. I have replacd the circuit board and nothing.