Hello, I have a Carrier 58SXA that I don't know what to do with next. When the thermostat calls for heat, most of the time the furnace works. Sometimes though it just does nothing; no inducer motor, no noise, nothing. It shows heat on the thermostat but the temperature in the house keeps falling and the furnace is silent. I replaced the control board. Same thing. I replaced the inducer board and pressure switch. Same thing. I replaced the ignition box. Same thing. I replaced the pilot assembly and flame sensor. Same thing. I replaced the limit switch. Same thing. I replaced the thermostat. Same thing. I'm stumped. I've checked the wiring down from the thermostat. Everything is as it should be. Our local Carrier man doesn't know what is wrong. I haven't replaced the gas valve or wiring assembly. When the furnace works, it works great. Thanks always Eddie
- posted
16 years ago