Voltage err01

[02Corvette]

I own a 2018 Thor, Quantum, 31 ft, with the Ford chassis, V-10.
While dry camping this weekend, the voltage meter (located by the entry door),would beep several times and then it would display an erro1, (after a couple hours of running on batteries). Everything in the motorhome seemed to work except the refrigerator. The light inside the fridge wouldn't come on and there's no power.
If I run the generator, the fridge would come back on and everything would be just fine, for a while, until I turn off the gen and run on batteries again.
Has anyone else had this issue with their motorhome and what's the fix?

[16ACE27]

Sounds like your battery voltage gets too low and the inverter shuts of with the error display.

[02Corvette]

I'm going to get the house batteries tested within the next couple days.
Thanks for the reply, 16ACE24

[02Corvette]

Had the coach batteries tested, both are junk after only 2 years. Of course, the dealer will only warranty for 1 year, no pro rating. I replaced them both and now the meter is reading a consistent 12.5 volts again.