Furnace Blower Motor Capacitor Symptoms

The blower motor in your furnace blows hot air through the ducts and into your home.

Furnace blower motor capacitor symptoms. The start capacitor gives a fan motor the torque it needs to start spinning then stops. If the furnace is receiving power turn up the thermostat and see whether the blower motor starts within the next few minutes. Delivering torque to the fan motor if the capacitor is faulty there won t be enough power delivered and the blower wheel fan belt and other important components can cease to operate. Not have a capacitor at all.

How to check a run capacitor. Where is a furnace capacitor located. Heat pumps and air conditioners use a dual run capacitor which connects to both the compressor and the fan while furnaces use a single run capacitor connected to the blower motor. That means the start capacitor is only needed at the beginning of each cycle while the run capacitor runs throughout the cycle.

Have two capacitors called a start and run capacitor. Problem indicators what you can do. Some units do not use a capacitors to run the blower motor. Have only a single capacitor.

If not the capacitor or the blower motor is not functioning properly. Indoor blower motor run capacitor. Its capacitor works like a battery and stores the energy needed by the blower to work properly. Some models include an auxiliary start capacitor that helps jump start the motors.

Most are found on the compressor. A bad or faulty capacitor can exhibit many signs and symptoms. A start or run capacitor can be combined into one capacitor called a dual capacitor with three leads but can be split between two separate capacitors. Before checking the capacitor make sure the fuse controlling the furnace is flipped to the on position.

Once it is discharged use a capacitor tester to check the. While the run capacitor stays on giving the motor extra torque when needed. Your furnace uses a lot of energy so to supply the extra energy needed to power the blower gas furnaces have a capacitor. Like a battery the capacitor stores the extra energy that is needed to jump start the furnace blower.

But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. To answer this question the panel door to the furnace will need to be removed. To inspect the capacitor make sure it is discharged. Similar to the outdoor fan motor capacitor it is a small single two terminals capacitor that will help start and run the indoor blower motor.