Dometic fridge wide temp swings
We have a one year old dometic 2652 two way fridge. It is not lacking in the cooling department. If you select the coldest on the panel, you get fridge cabinet temps sub freezing (sometimes in the high 20's). Problem is that it can swing into the high 40's and even hit 50 degrees at one point. There are only three temp settings available. No one selection creates a satisfactory result. Sounding like goldilocks but it is either too warm or two cold. I have installed a set of fans on the inside attached to the cooling fins to help circulate air better. I also installed two computer squirrel cage fans on the back to help with convective flow through the roof. Is there anything else I can do to tighten the parameters? I know it will cool, it just seems like there is a set point that needs to be adjusted but I have no idea how. There is no apparent thermistor inside like on the old designs. I have gone through the owners manual and even downloaded a service manual with no insight.
Anyone have fresh ideas?
Thank you in advance.
2015 puma 295bhss
2009 ram 3500 6.7l ctd