I own a 2021 Fleetwood bounder 35k. For the past 5 weeks or so when I flush my maserater toilets the lights go out, water heater turns off and steps retract. I've gotten new batteries, changed out the inverter disconnect switch, tested all fuses and still no luck. The batteries test at 13.4, the touch panel doesn't ever show more than 12.3 except when the Rv is running. Last night my batteries were showing 8.8 for both house and coach. I had to jump start my rig, for lights. Not sure what else to check for?
I'm plugged into shore power, 50A
Any help would be much appreciated, thank you.
