Sprinter/Winnebago Navion electrical issue

[SteveBuckeyeFan]

8 year old Navion on Sprinter Chassis just started acting up electrically. Everything works electrically when plugged in to shore line, but when unplugged, all "coach" electronics are dead, both 12 volt and 110. Batteries are fully charged. Engine running. If I plug back in to shore power, everything works!? All fuses seem fine. Thoughts?

 

[T’sOVR&Explore]

You described symptoms suggesting that the ac powered converter supplies 12 volt but the battery does not.

Could just be an end of life lead acid battery that gotz nothing left to give, or a BMS cutoff event if it is a LiFePo4 battery. If the battery checks out good, go looking for a blown maxifuse or dc circuit breaker close to the coach battery.

If the main DC fuse is blown or breaker popped open, you will need to figure out the cause.. Good Luck!

 

[SteveBuckeyeFan]

You described symptoms suggesting that the ac powered converter supplies 12 volt but the battery does not.

Could just be an end of life lead acid battery that gotz nothing left to give, or a BMS cutoff event if it is a LiFePo4 battery. If the battery checks out good, go looking for a blown maxifuse or dc circuit breaker close to the coach battery.

If the main DC fuse is blown or breaker popped open, you will need to figure out the cause.. Good Luck!

Thanks for the reply. I was watching a video on the internet and it had a reminder of various things to check and it reminded me of the coach power "on/off" button at the entry way. Well, long story short, we were camping this past week and our 4 year grandson likes to push every button known to mankind and I had totally forgotten about that button. I went out to the MH and low and behold, he had turned off the coach power and that was the issue! As soon as I turn the power button to "On", problem solved! I knew it had to be something simple.