Happy Friday - I installed a new fridge (Whynter FM45G) on my 1990 Toyota Itasca Spirit and hardwired it to the fuse box. Last night it was working for an hour as I continued to work on the rig ...
You said it powers an "inverter"! After you read the batteries for voltage, you will get better replies. Do you have two sets of batteries, One for chassis and one for coach?