Electrical system failure

[Citrus breeze]

Today, my unit suddenly indicated through the Xantrex solar unit that the batteries were dead!  New batteries as of last year!  Circuit breakers checked out fine.  Why is the system apparently draining the batteries?

 

[Steph and Dud B]

More info please. Type of batteries? What voltage do you see when you press the Battery button on the SeeLevel monitor? Are you plugged into shore power or running off batteries? Do your interior lights work? Do you have a multimeter?

[topgun2]

1 hour ago, Steph and Dud B said:

More info please. Type of batteries? What voltage do you see when you press the Battery button on the SeeLevel monitor? Are you plugged into shore power or running off batteries? Do your interior lights work? Do you have a multimeter?

Also - 

do you have solar panels?  Do you have a solar panel cut-off switch?

do you have an inverter?  Is it on or off?

do you have a fridge that runs off DC power (i.e. a three way fridge)?  If yes then what setting is the fridge on (a/c, d/c, or propane?

Bill