No Power to Dash/Chassis
So I go out to crank my motorhome. Batteries are fine. House power is fine. Everything works on the house side. But I have no voltage to the power distribution box located under the driver area. ...
Forum Discussion
Gdetrailer wrote:
Why don't you simply buy a "battery maintainer"?
An isolator is designed to allow charge to flow from alternator or converter/charger (later powered by shore power or generator) to BOTH the motor battery and the house battery.
But it also allows ONLY the house battery to flow back to power the "RV parts" thereby leaving the motor battery to start the motorhome- even when the house battery is dead.
Sometimes there is a "combine" switch to allow house battery to aid in boosting the motor battery to start in the event of emergency (dead battery).
If the isolator was bad, the converter/charger cannot charge the motor battery, allowing it to slowly lose its charge to parasitic or standby losses.
