1998 A/C switch problem
 

Hey!

I'm planning on buying a 1998 Honda Civic, but it has one problem; The A/C only works on 3 and 4, doesn't work on 1(low) nor 2. I'm guessing it's the switch, but I don't know much about cars so maybe some of you can help me if it's a big problem. Thanks in advance and sorry for my english