2002 Polo Playa Aircon Issue

Hello Member's

I have an issue with my 2002 Polo 1.6i, The Aircon works but it doesn't.

I Will do my best to explain.

When the A\C Switch is on or off and you set the Fan Switch to #1 Position it does not blow air but as you drive it does but that's more from the car moving, when you set the Switch to #2 or #3 it does absolutely nothing but when you put #4 on it blows strong and cold air (If the A\C Switch was set to On and on #1 for a Minute +-) and then blows warm are.

Basically i need to have the A\C Switch on, Set the fan to #1 for a lil bit then set the Fan Switch to #4 and repeat while driving.

Any idea what the problem could be?

Thanks in advance