Coach battery bank not working
Hi, Fulltimer with a wife and 2 years old baby trying to troubleshoot an electrical issue for almost a week without luck, need to be able to run furnace and the rest of the equipment as its getting...
Forum Discussion
MT BOB wrote:
Generally most coaches will not use chassis battery, but gets power from chassis when vehicle is running.
Just because a relay clicks does not mean it is good, the internals could be poor/bad.
Here is a basic 3 relay system,the "isolation" relay would be your emergency start relay.
I suspect a bad house battery relay,or it is not being turned on, or a bad positive connection somewhere from the house battery(s) to the relay.
I recently had a problem with my solar, and on-board generator not recharging house batteries. Used an external generator to recharge back to 100%, but it pretty much destroyed generator's ability to work after that, as it revved up a lot, in spurts, while recharging over a period of about 5 hours.
Had a mobile tech come out, and he completed thorough diagnostics, during which he found two items of concern... first, there's an on/off switch at the top of the on-board generator that was in the off position, although it charged batteries for 3 weeks prior with no issues. No idea how it was flipped to "off", but flipped back on, and then generator charged batteries.
Second issue was that solar was not recharging house batteries, and diagnostics showed the "battery disconnect" module (housed in the electrical cord bay) showed 1V difference between chassis side (14.2V) and coach side (13.1V), and this, he said, was the problem, as they should both be reading same voltage.
So, am about to have this module replaced, and hope this resolves the charging dilemma...
