Furnace Blower Motor Capacitor Symptoms

Have only a single capacitor.

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

Once it is discharged use a capacitor tester to check the. Some models include an auxiliary start capacitor that helps jump start the motors. 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. 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.

While the run capacitor stays on giving the motor extra torque when needed. If the furnace is receiving power turn up the thermostat and see whether the blower motor starts within the next few minutes. Problem indicators what you can do. To answer this question the panel door to the furnace will need to be removed.

To inspect the capacitor make sure it is discharged. Its capacitor works like a battery and stores the energy needed by the blower to work properly. The blower then moves the warmed air into and through the ductwork in your house. How to check a run capacitor.

That means the start capacitor is only needed at the beginning of each cycle while the run capacitor runs throughout the cycle. The start capacitor gives a fan motor the torque it needs to start spinning then stops. Like a battery the capacitor stores the extra energy that is needed to jump start the furnace blower. The capacitor helps the fan motor run.

Some units do not use a capacitors to run the blower motor. If not the capacitor or the blower motor is not functioning properly. But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. Most are found on the compressor.

Have two capacitors called a start and run capacitor. This is the most common design type. Not have a capacitor at all. A bad or faulty capacitor can exhibit many signs and symptoms.