32 amp draw on the inverter panel is only a bit over 300 watts. If the Fridge is the ONLY thing on the panel then the heat element is working but if you have TV's Sat Receivers and other stuff. Well turn off the Fridge and see what the amp draw is. the Delta-A is the power used by the fridge (should bet around 350-400 watts)
I replaced my cooling unit with a new Absorption unit and am very happy with it.
Had a couple occasions a couple months back where I was glad I had an absorption unit and NOT a compressor unit (Long term power fail. one area wide one half park wide).