Jeff Bayley
08-15-2008, 11:33 AM
My A/C head unit on my 1999 H3-45 shell isn't powering on. This is unmodified and no converter has changed anythign yet. It's factory bus air from Prevost and the factory set up still. It has a driver and and a passenger zone. It was working when I got the shell and I'm gettting it ready to show to someone to sell but.........no bus air with the head unit dead. I still have to get behind the dash and confirm I've got power going to the head unit BUT, in the rear, drivers side fuse, electrical and relay bay, there's a small device about 4" x 4" that has has one LED on it and a legend that tell's you..........hmmmm, points you in some sort of direction (if your a Prevost tech I guess) as to the error. The box does not say what it controls or goes to anywhere on it. It's blinking once every 10 seconds and the legend say's that means "Bad contact on Channel #1 or defect." In the photos, it is the unit in the further upper left hand side; just to the left of where the last relay is.
Even if this is unrelated to the head unit for the A/C, anybody know what that's for because what ever it is, it's got a "Bad contact on Channel #1 or defect." what ever the heck that is.
Even if this is unrelated to the head unit for the A/C, anybody know what that's for because what ever it is, it's got a "Bad contact on Channel #1 or defect." what ever the heck that is.