Furnace Exhaust Fan Not Working

If power is getting to the blower motor but the motor does not run the motor may be burned out.

Furnace exhaust fan not working. If the blower motor is burned out replace it. The first thing to do is check the relay or voltage from the board. If set too low you may be cold but your furnace thinks. This sounds like your motor might be over heating.

If your oil burner doesn t work at all check to see if it is receiving electrical power if the thermostat is broken or turned off or if a flame sensor in the burner or heat sensor in the stack has signaled the unit to shut off. I would suggest that you check all connections on the furnace to make sure they are good and tight. If you have a high efficiency ecm motor then you might have a motor module going out. This is another common reason behind faulty blower fans.

First make sure that power is getting to the motor. Clean the fan after turning off your furnace completely. You might need a new motor module on ecm motors. If the blower fan is unobstructed but does not spin freely replace the blower motor.

Take these three steps as soon as you realize that your furnace isn t working. If it has reset and allow time for a normal heating cycle. This sounds like you might have a control board going out. If the blower fan on your furnace does not start then the furnace burners should burn for a short while until the furnace s limit cuts the burners off to keep the furnace from over heating.

If no voltage is recorded you will have to replace the board or the relay. Part of an interactive video. Inspect the fan while your furnace is powered on take a look at how your fan is running to see if you can pinpoint. I would like to suggest that you make sure if your motor has a capacitor that the capacitor is good and up to specs.

One of the most common problems with furnace fans is a bad blower relay. Furnace not working oil burner first of all if the oil burner goes on and off too much clean or replace the filter. Check to see if furnace circuit breaker has tripped. If the blower motor hums check the blower fan to ensure that it spins freely.

If there is a battery check if it is working properly.