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

https://winterhavenhvacrepair542.cloudhinter.com/posts/what-impacts-ac-repair-cost-in-winter-haven-fl

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.