Clicking that repeats but never starts the unit can be a bad relay, capacitor, or thermostat issue
https://www.livebinders.com/b/3725578?tabid=2e51dabe-eac2-c5da-fa58-10839cde4ff2
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.