Clicking sound out of dash when AC cooling is on for a longer period

[Frostensen]

So, as the title says, when my AC is cooling the car, after a certain while a clicking noise starts coming out of the dash. It's constant until I turn off the AC. It happens only when the cooling is on (no problems with heating). It's really annoying. Does anyone have an idea what that could possibly be?


Click Clack sound