See if you have voltage to the soliniods and try tapping both w/ a hammer. If no results remove them, apply voltage and see if air can go through it.
Some transmissions require only one soliniod to be operational for a particular direction, and some require both soliniods to be on for a particular direction.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.