Carrier Furnace Inducer Motor Does Not Start

The result is not enough juice makes it to the inducer motor and it most likely won t start up.

Carrier furnace inducer motor does not start. If you kill power going to the furnace and try to restart will the inducer motor try to start. This problem of getting a humming noise along with little to no spinning is very common with motors that do not have good quality capacitors. The first thing that is supposed to start when a furnace starts up is the draft inducer. Or if it does it s going to be weak or start and stop repeatedly every 30 seconds or so.

A quick test of your capacitor can tell you a lot. This could be a tapping noise or a humming or whirring sound. All modern microprocessor controlled furnaces by manufacturers such as carrier include a self diagnostic procedure to test the function of the inducer motor. I don t see how that could be causing the board to not send enough voltage to the inducer but i m wondering if maybe the capacitor breaking caused some feedback issue to the board that might have damaged it.

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. 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. If your furnace blower motor hums when it s switched on but at the same time does not actually turn the capacitor may be damaged. The first thing that is supposed to start when a furnace starts up is the draft inducer.

I have performed the equipment test. 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.