without knowing what year/make/brand/model/size your inverter is, it's hard to give you any advice. Also, do you have a remote control panel, or just the inverter itself.
Does the inverter power the fridge, only? or is it wired into your Main panel where it powers some or all of your outlets, also?
Does it have an AGS model/function to start your generator automatically when your battery levels get low, etc? Sometimes this 'communications' problem is between the Inverter controller and the AGS module.
'14 Thor Palazzo 33.3 compact diesel
KingTailgater2 Dish, 100w/5amps roof SOLAR, BlueOx, 100,000+mi since '14... US, Alaska, and Canada... GA, NC, now N AL : )