We have a plane that has the H3 a/c pack and it goes full hot in auto. I can control it in manual. I ahve changed the Anti-ice vlv, the Water Seperator Sock, the Anticipator Stat, The Temp control box and followed the FI. All the wiring is ohming good, but I still have the problem. I was wondering if anybody here could help. The plane is an 85 model.