Originally Posted by darbyjudy
I e-mailed Magnum Tech. I got an e-mail from one of them and he told me to disconnect the AC power and then start the engine , I then should see a voltage increase on the voltage for the batteries for the coach. Also should see an increase in voltage on engine battery. Well I did that and I don't see an increase on the voltage for the coach but I do see increase of voltage for the engine battery. I then shut the engine off and started the generator, I see that the coach batteries are charging but not the engine battery. The tech said it is probably the solenoid. I do also notice that the Aux start switch does not work. Is this something I should take to the dealer for? When I opened the battery box I checked the fuse for the aux start. Also I see the solenoid in the box but it looks like it is hard to get to to change it out.
The way it is now if I am traveling the refrigerator is going to run the batteries down.
MH is 2017 Holiday Rambler Vacationer 35K
Call REV and find out how your coach is wired. On my coach, on shore power, the coach batteries must be charged to at least 13.3 for the charge to pass through to charge the chassis batteries. When the engine is running, the opposite is true....the chassis batteries must reach 13.3 for the charge to go through to the coach batteries.