Ok, I've been working on ACS for close to 30 years. This one has me scratching my head. New condensing unit was installed last year, has been running great. Stopped working, I found the transformer was burned out, replaced it. Now, I have my 24v outside, but as soon as I hook it to the contactor, it drops the voltage to about 1v. Installed new contactor, same thing, even with no high voltage wires hooked up. T stat was replaced too, just because it was old, and I wanted to eliminate it as an issue. Any suggestions?
Got it! Brand new contactor bad, out of the box. Had me pulling my hair out! Up and running, 👍🏼
Good job. That would have been my guess but you beat me! ;D
yes this happend to me one also with brand new contactor .
Good to know with the upcoming ac season. Thanks for the heads up!