Workshop Status:
Completed
EPA Certification:
Universal
Employment Status:
Tommy Cobb at HVAC Technical Academy
Tommy Cobb video - Contactor Overview (Training Transcript)
Tommy Cobb video transcript - Contactor Overview (Training Transcript)
Speaker: Tommy Cobb
Hey guys, my name is Tommy Cobb and I’m here at HVAC, and I’m gonna tell you about a contactor.
So, a contactor is this guy here. A contactor acts as a switch, an electrical switch. So basically, on a controller, you have high voltage that has to pass through when this clicks down to other components that then pass off voltage to be used in the system.
So basically what happens is say you’re at your thermostat and you call for cool. This high voltage is going to pass through here and then distribute low voltage to the capacitor which then breaks off and sends voltage to your compressor fan motor and your condenser fan motor.
So yeah, how do you test a contactor? You would simply get your micro, I mean your multi-gauge, and go to your microfarad settings, and you would test for continuity. And that would be just putting one here and one here. You hear that? Makes a sound and that’s letting you know that you have continuity. You can do the same here and here and also here and here. I’m guessing that’s this is not a good contactor.
How can a contractor go bad? You can get insects or little ants or anything that really stops this from going down and allowing the circuit to run through. It could make your contactor become this fault.
And yeah, there you have it. That’s a contactor. Thank.