I have the problem isolated. It is the electric expansion valve. I can have everything else connected and everything is fine but as soon as I touch the wire onto the expansion valve, the fuse blows. So I have a parts machine that I can go rob one of these out of. But how do I get this thing out of there? Does it thread out? It doesn't have any wrench flats or anything on it to indicate that it is a thread in part. And I don't want to put a wrech on it and start wrecking things. Is anybody familiar with these?