A/C climate control switch: POOF.

[Bmwtvboy]

Odd problem. I cleaned the climate control module and everything was working fine. I had the a/c compressor checked out, ground fine, and system blows ice cold air. BUT, when I depress the defrost button it pops the fuse:7.5 ,c.c.module goes off/black.
And then the system blows hot air only, I tested the dual water valve and it seem to click, but very lightly. Is this a water valve solenoid issue? Do I just replace it? It is original after all. Just don't want to throw parts at it. The same thing happens when I start up and only depress the defrost button. A/C button only works fine. It will blow if I try to adjust the temperature above the 60-64 degree mark on the c.c.module.