As some of you may recall I just went through a similar situation with my levelers. Received contact with azpete a member of this forum who is with HWH and is a travelling tech. He knows the systems inside out. He contacted me via PM so I was able to work back and forth. Not sure how to PM someone without a thread but I am sure some one will be able to tell you. Also if you go to hwhcorp.com you can find trouble shooting and system manuals. Takes a bit of searching in their site and you have to know your HWH system and chassis type.