The first thing that is supposed to start when a furnace starts up is the draft inducer.
Carrier furnace inducer motor not running.
First make sure that power is getting to the motor.
Jumped lower pressure switch.
And every gas furnace we make passes the legendary carrier 100 run testing for quality and reliable performance.
Shows no power from circuit board for high speed post for inducer motor and not from low speed post.
Applied 110 v to inducer motor worked.
I have a carrier 58mca furnace.
This could be a tapping noise or a humming or whirring sound.
Longer low stage run times give you better energy efficiency better temperature control and increased comfort.
Ran ohm meter on limit switches all open meter.
If the blower motor is burned out replace it.
Sometimes the bad inducer motor becomes very hot to the touch.
If the blower motor hums check the blower fan to ensure that it spins freely.
If the draft inducer does not start then you probably either have a thermostat thermostat wiring problem electrical problem control board problem or a bad draft inducer.
A failing inducer motor may create a noise shortly after a heating cycle begins.
Our forced air units can keep your home warm with models that automatically adjust as conditions change circulating warm air nearly continuously for high efficiency quiet operation and consistently comfortable temperatures.
Backed by the intelligent infinity control and a variable speed blower this two stage furnace will run in low stage up to 90 of the time.
If power is getting to the blower motor but the motor does not run the motor may be burned out.
If the unit will turn on but the blower motor is not turning on there are a couple of ways to check if the draft inducer motor has gone bad.
A bad furnace inducer motor can result in a loud buzzing or whining noise and loss of heat.