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.
Carrier furnace inducer fan noise.
I am trying to replace my condenser fan motor unit is a carrier 25hbr342a300.
It s above freezing here all the time no chance of ice in the flue.
A failing inducer motor may create a noise shortly after a heating cycle begins.
Having dirty burners in your furnace can cause a delay in ignition.
The original condenser fan motor is a carrier 5kcp39efy465s.
This could be a tapping noise or a humming or whirring sound.
So the gas will build up instead of the gas igniting immediately.
The specs on it are 1 8 hp 810 rpm 208 230v a 0 90 cap 5 00 read more.
The blower wheel is attached to the blower motor shaft with a set screw.
There is also a pvc screen inserted in the end of the combustion air flue so it is highly unlikely anything is in there.
If the set screw is loose the blower wheel will wobble on.
The motor shaft and the wheel will be noisy as it turns.
One common cause of a loud bang or boom is a dirty burner in your furnace.
The blower wheel blows air out of the furnace and through the house.