Join Date: Sep 2016
Location: Costa Blanca Spain
My Motorhome: I drive... Hymer B550 Skyline
Thanked 42 Times in 42 Posts
You may have a panel......Hymer simply calls it a "panel" perhaps situated above the accommodation door with two meters side by side.
Left hand group, ALARM under the meter, right-hand side toggle switch shows "fullness" of grey water tank or fresh water tank.
Left-hand of this group shows tiny pics of vehicle with oblong in motor section and another in accommodation section. These are the "batteries".
Switch the left-hand toggle to read the voltage of each battery. If your system is working, each reading should be between 13.4 and 14 Volts.
Now that your anxiety is over........ to make absolutely sure, the purchase of a electricity multimeter and a bit of practice with it will pay dividends in the future
and you can check voltages across the battery terminals themselves and chase other mysterious electrical happenings !