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

https://coolairtroubleshooting176.capitaljays.com/posts/ac-not-working-in-winter-haven-a-homeowner-s-guide-to-the-right-repair-call

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.