House Batteries not being charged by engine.
Greetings all, Been RV'ing for 30 years and we just bought a 2019 Minnie Winnie 22r on a Ford E350 chassis. My house batteries are not getting a charge when engine running. Batteries charge w...
Forum Discussion
The relay on the left battery is energized to charge house battery and to act as a booster in the event chassis battery fails.
Start the rig and let it run for a few minutes. Check across the small terminals for 12-volts DC. If not present it could be a blown fuse in the battery control center. OOPS! the small terminal with engine running should have 12-volts DC.
check from small terminal to a good negative (battery terminal) There should be low resistance.
With engine off, check voltages on the large terminals, compare them. One should be chassis battery and the other should be coach.
Relays should be continuous duty and not starter relays.
Some are controlled by a switch on the dash.
Start the rig and let it run for a few minutes. Check across the small terminals for 12-volts DC. If not present it could be a blown fuse in the battery control center. OOPS! the small terminal with engine running should have 12-volts DC.
check from small terminal to a good negative (battery terminal) There should be low resistance.
With engine off, check voltages on the large terminals, compare them. One should be chassis battery and the other should be coach.
Relays should be continuous duty and not starter relays.
Some are controlled by a switch on the dash.
