As the title says my blower works in all four settings on heat. If I switch to a/c or defrost nothing. When I switch to a/c the compresser does not kick on. It is a 95 Country. I jsut bought it and was told the a/c worked last summer, any clues? Did check fuses, could it be something as simple as a relay?

 

Did you get a answer to your problem with the "got heat but no defrost",I have a similar problem.

 

Might just need your fluid filled. Not sure where to get it done but i need it done to.