Clicking that repeats but never starts the unit can be a bad relay, capacitor, or thermostat issue

https://localairconditioningcooling083.talesignal.com/posts/how-to-tell-if-your-air-conditioner-needs-one-more-repair-or-a-full-replacement

Clicking that repeats but never starts the unit can be a bad relay, capacitor, or thermostat issue. Check settings, then schedule diagnosis if the AC does not engage.