Furnace Blower Motor Capacitor Symptoms

A faulty capacitor will not be able to hold the charge necessary to run the blower motor properly.

Furnace blower motor capacitor symptoms. Fan motors can sometimes run even with a bad capacitor but hidden damage is still happening to the fan motor. This is the most common design type. Weak or bad capacitors can also cause blower motors to not run or to run slow. This is especially true for the compressor.

But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. If you notice your furnace s motor cycling frequently you should test the capacitor. How to check a run capacitor. The most common symptom of a bad capacitor is that the motors do not run.

Not have a capacitor at all. Capacitor failure symptoms are sometime harder to identify without the right tools and expertise. Frequently each failure will be immediately followed by a trouble free actuation giving the appearance that the. Have only a single capacitor.

Have two capacitors called a start and run capacitor. Excessive heat in the motor can cause the motor to malfunction. Please click here to see the capacitors we sell. A bad or faulty capacitor can exhibit many signs and symptoms.

This will cause the motor to run slowly causing excess heat. Read on to know some of them. Where is a furnace capacitor located. If you hear a clicking sound when the capacitor kicks in that s a problem too.

Faulty capacitors lead to overheating intermittent motor operation humming noises or even outright blower motor failure. If it is turn up the thermostat and see if the blower motor starts within a few minutes. The humming sounds created by the blower are indications that the capacitor has electrical problems. 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.

The first symptoms are often intermittent failure of the compressor to start. If you hear that sound and it doesn t stop there s an electrical difficulty. Open the access panel to the furnace and listen for a relatively loud humming noise. Although only pros should test or repair capacitors you can examine your.