I went to AC school 8yrs ago, questions are welcome.
My air condition condenser( outside unit only) was shutting off after 3-5 minutes. I heard the contactor clicking so I changed it, still shut off after 5 minutes. I changed the indoor transformer, still shut off after 5 mins. Checked the capacitor, no bulging so that’s good. Indoor still runs so not thermostat. After tapping on the CCR (contactor Control Relay) at the main board outside unit it has stayed on for a half hour. As I lightly tapped on it, it made the same sound as before and made the contactor jump. Ordered a new board and I will update. Thanks for watching!
UPDATE** 9/12/19- been working great since, never installed the board, I have it on standby.
