The Previous CFX used the Danfos/Secop compressor, With the CFX3 Dometic have fitted their own Compressor so maybe the trouble is in the new compressor,
If you can get them to remove the fridge from the Deal then buy your self a National Luna 50L or this 60L model in this link, They are the Best Duel Zones Bar None,
But if they won't agree to it then Send the CFX3 back to dometic and buy the National Luna, because some of their range have a 7 year+ warranty Ok,
National Luna is the Rolls Royce of fridges so you will never find a better fridge, My Personal bigger fridges are ARB Blue Classic series which have the same running gear as the national Luna's and the earlier CFX series which is the Danfos/Secop Compressors,
National Luna 60 Lt Fridge/Freezer Legacy Dual control is the ideal combo unit for those looking for maximum storage and efficiency plus minimal battery consumption.
www.expedition-equipment.com
Here is their complete range of Twin control and twin control twin Lid fridges, you just need to do a search for them in the country where you live, National Luna were first made for the WHO and NASA, So these are the real deal Ok
Hope that Helps,
For the ultimate in versatility, National Luna offers its unique Dual Control fridge units with two individually controlled fridge-freezer compartments.
www.nationalluna.com