House Battery not working

[bigbolide]

I have a 2018 Thor Four Winds 22E with 11k miles on it. Had it rented out in later Aug and renter complained the house battery being dead. I replaced it but still no power. If I plug in shore power there is power but once I unplug it, all power lost, the house battery switch by the entrance door does not work. How to diagnosis before I drive it to dealer? Is it possibly an inverter issue or should I check circuit/wire?

[16ACE27]

The switch by the door controls the battery disconnect latching relay. It will no work if there is no voltage from the batteries to the latching relay. There is a DC breaker, 50 or 70 amp, close to the batteries that supplies the latching relay. If it is tripped it would describe your symptoms exactly.

This thread is for a 24F with the same apparent issue:

https://www.thorforums.com/forums/f2...ion-35175.html

[bigbolide]

Originally Posted by 16ACE27

The switch by the door controls the battery disconnect latching relay. It will no work if there is no voltage from the batteries to the latching relay. There is a DC breaker, 50 or 70 amp, close to the batteries that supplies the latching relay. If it is tripped it would describe your symptoms exactly.

This thread is for a 24F with the same apparent issue:

https://www.thorforums.com/forums/f2...ion-35175.html

I crawl under the RV but did not find the breaker. Photos show what the battery compartment.

[16ACE27]

Originally Posted by bigbolide

I crawl under the RV but did not find the breaker. Photos show what the battery compartment.

Trace that positive cable. It likely goes to a "splitter" stud. Then follow the outgoing cables from the splitter.