Since I couldn't get a schematic from Thor, and since I don't fully understand the circuit of relays behind that use/store switch..... and since I'm paranoid having replaced too many batteries in other rv's and boats from neglect.....
so one of the first things I did was to install disconnect switches on both the house battery and on the chassis battery. Every time I park to store, the batteries get disconnected.
Something I would suggest to almost everyone....
Regardless, I'm sorry to hear of your troubles. Good luck
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