Furnace Blower Motor Capacitor Symptoms

If you notice your furnace s motor cycling frequently you should test the capacitor.

Furnace blower motor capacitor symptoms. Weak or bad capacitors can also cause blower motors to not run or to run slow. Capacitor failure symptoms are sometime harder to identify without the right tools and expertise. This is especially true for the compressor. We sell over 80 different capacitors on the following page.

Read on to know some of them. We have two real good youtube videos near the bottom of this page which explains how to replace and troubleshoot an air conditioner s capacitors. Please click here to see the capacitors we sell. Frequently each failure will be immediately followed by a trouble free actuation giving the appearance that the.

Excessive heat in the motor can cause the motor to malfunction. Have only a single capacitor. Where is a furnace capacitor located. This is the most common design type.

Some units do not use a capacitors to run the blower motor. A faulty capacitor will not be able to hold the charge necessary to run the blower motor properly. The most common symptom of a bad capacitor is that the motors do not run. This will cause the motor to run slowly causing excess heat.

The humming sounds created by the blower are indications that the capacitor has electrical problems. Open the access panel to the furnace and listen for a relatively loud humming noise. If you hear that sound and it doesn t stop there s an electrical difficulty. Fan motors can sometimes run even with a bad capacitor but hidden damage is still happening to the fan motor.

A bad or faulty capacitor can exhibit many signs and symptoms. If it is turn up the thermostat and see if the blower motor starts within a few minutes. If you hear a clicking sound when the capacitor kicks in that s a problem too. The first symptoms are often intermittent failure of the compressor to start.

Have two capacitors called a start and run capacitor. How to check a run capacitor. But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. Although only pros should test or repair capacitors you can examine your.