Newmar electrical problem
I've got a friend with an electrical problem. Here is the story. Chassis batteries keep going dead even though the coach is plugged in. Today the coach batts were 13.5 and the chassis 7.4v. I know...
Forum Discussion
wolfe10 wrote:
Rick,
You are describing multiple (likely unrelated) issues:
Very hard to believe that the chassis battery is charged when on generator, but not when on shore power. Your converter, charger or inverter/charger really doesn't know the difference between the two sources.
It is not uncommon for the coach maker to wire the coach to charge the house battery bank from the converter, charger or inverter/charger but NOT the chassis battery.
And, as you state, the alternator should charge both banks when the engine is running.
With very low voltage on one bank, be careful about condemning a battery combiner solenoid. If it is powered by the battery with less than 12 VDC, THAT may be the issue.
Clearly, he needs to track down the 5 amp draw. That will take any battery bank down in just a few days.
The Onan genet will start and recharge the chassis battery on its own but will not charge the house batteries until the intelic control box tells it to.
He may have smoked the relay that the controller closes when the system requires it to, or he may have a bad controller or an open in the ground for the controller.
