Toyota Corolla E12 Bj 2003 (Question on air conditioning or the “AC” button)

Hello municipality, we have before for my Freunin a Toyota Corolla E12 (bj. 2003) to buy. uute we found a car which we are very interested in. However, there seems to be problems with the air conditioning. It is NOT an automatic climate control. The car has only an air conditioning system. The problem is that it does not cool if you press the “AC” button. Now my question: What should happen/knock/click in the engine compartment if you press the “AC” button on running engine? With my other cars one gets a clear cracking as soon as I switch on the climate. That has to do with it, because when switching on a clutch is activated to drive the compressor. With the Corolla nothing clacks as soon as I press on the “AC” Tase…. Could it possibly only be the fuse….? Does someone know with the climate of the E12 Corolla? Greeting Rene