AC issues

A couple of days ago my downstairs AC unit went off and the control panel had no power. I reset the breaker and it came back on. This morning, I lost the unit again and again with no power to the control panel, but resetting the breaker is not helping. I checked the leads on the control panel and am not getting voltage to it. It's a Carrier HVAC. Any advice on other things to check? BTW, Anybody used Frymire to service their AC? Comments?
Thanks in advance, Steve www.texascontractorratings.com
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It was a loose wire. Thanks for the replies.
Steve

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wrote:

I see you got it fixed, congrats on finding the loose wire. Sometimes things do turn out to be simple. For future reference, no, getting 120 across it doesn't rule it out if it was measured when it was not under load. If you have poor connections you can get 120 when nothing is running but under load it could drop way down.

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