Furnace Blower Motor Capacitor Symptoms

The first symptoms are often intermittent failure of the compressor to start.

Furnace blower motor capacitor symptoms.

The most common symptom of a bad capacitor is that the motors do not run. This is especially true for the compressor. This will cause the motor to run slowly causing excess heat. Please click here to see the capacitors we sell.

But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. Have only a single capacitor. Excessive heat in the motor can cause the motor to malfunction. To answer this question the panel door to the furnace will need to be removed.

Have two capacitors called a start and run capacitor. This is the most common design type. A bad or faulty capacitor can exhibit many signs and symptoms. Read on to know some of them.

Fan motors can sometimes run even with a bad capacitor but hidden damage is still happening to the fan motor. 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. Some units do not use a capacitors to run the blower motor.

How to check a run capacitor. Weak or bad capacitors can also cause blower motors to not run or to run slow. Not have a capacitor at all. Where is a furnace capacitor located.

Faulty capacitors lead to overheating intermittent motor operation humming noises or even outright blower motor failure. A faulty capacitor will not be able to hold the charge necessary to run the blower motor properly. 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.

Although only pros should test or repair capacitors you can examine your. We sell over 80 different capacitors on the following page. If you hear that sound and it doesn t stop there s an electrical difficulty. If you notice your furnace s motor cycling frequently you should test the capacitor.