Garage Door Capacitor Test

How to test a garage door opener capacitor written by teresa agresto on nov 19 2010.

Garage door capacitor test.

Symptoms include the hum of a garage door opener and its failure to start working or the failure of an air conditioner to cool the room. To test a capacitor to see if it is working you will first need an ohmmeter multimeter. Here i am testing a start capacitor and a run capacitor for an electric fractional hors. Not only are there many different types of garage doors and garage door openers but these are actually very complicated devices despite its name your garage door opener is actually a series of different systems connected together.

To ensure our content is always up to date with current information best practices and professional advice articles are routinely reviewed by industry experts with years of hands on experience. When you energize the motor by pressing the switch or using the remote power flows to the. The capacitor in a garage door opener is known as a start or electrolytic capacitor. Garage door capacitors vary on size color capacitance and voltage.

It s an all or nothing test that tells you if the capacitor is dead but it won t diagnose one that is still functioning weakly but about to stop working. You will be taking a measurement reading of the electrical resistance. This procedure for testing to see if a how to test an appliance capacitor with a multimeter read more. You can take a quick snapshot with your cell phone or write down all of the information written on the side of the capacitor.

The reading on your multimeter will tell you if the capacitor is working properly or needs to be replaced. In my experience the capacitor is the first to go out then maybe the power board or control board. Testing procedure for capacitors using a standard analog multi meter. Because a garage door opener is a complicated creature there s a lot that can possibly go wrong.