I don't know about the "bypass switch" but I bet anything you've got a by pass valve that is set to by pass position. I'm not familiar enough with your unit, but thats the only explanation I can think of.
BTW...you don't have to wait til you have a problem and/or six months to post.
__________________
Jim with Judy
2017 Newmar Ventana 4369, 2005 Jeep Wrangler (Rock Crawler), 2016 Jeep Wrangler (Mall Crawler)
|