Refrigerator

You have a Magnum Inverter/CHARGER. It has a Pass thru relay that when ON Shore Power or genset, the current passes thru. IF you turn the Inverter OFF and you do not have 120 current thru the Inverter, then your Inverter relay is bad. Depends on the Brand and Model of refer. Some refers have NO off switch. Some have a switch that turns the compressor OFF but leaves the interior controls and interior lights on. You need to read the operators manual for your Brand and Model refer to determine if and how you turn it off. Do NOT turn the Inverter ON unless you want to have the appliances connected to the Inverter to operate when NO Shore or Genset power. If you forget to turn it OFF and store your RV the Inverter will drain the Coach batteries in 2 to 3 days. Faster if the refer is left on. Doug

PS, If NOT connected to Shore Power and the Inverter is OFF, your refer will then be OFF