Hello!
Made an account here just to share my experience with the fridge so far. I'm converting a van so I got the fridge from a local dealer here in Finland about a week ago. It was a store display product so i got it on a discount. Yesterday I hooked up the fridge and my Ecoflow Delta 3 Max Plus to my 12v fusebox to run some tests before they get installed in the van. Basically wanted to see how long the Ecoflow would run the fridge. Might be a long post so bare with me.
So... Had a similar experience to the rest of you here. I put the fridge to 6 and set the freezer to -12 and let it sit. I was mystified why the compressor wasnt even running even when the temp on the fridge was like 15-20 or someting, but I waited. The freezer achieved the temp fast but in about two hours the fridge only got to about 12 or 13 and i went to bed. My partner woke up in the morning and saw fridge temp still only at 10 so she set it at 3 and it eventually cooled to that but the freezer went really cold. I've been decoding the logic of the fridge today and i've found out a couple of things.
The compressor/thermostat will only follow the last temperature you set, not both. Meaning that if the fridge side is the last temp you set, it will treat that as gospel, and if the freezer side needs to go to -29 or something to achieve it, it will. Then it waits until the fridge side goes up 2 degrees and turns on the compressor again. If all you care about is the fridge staying within your parameters, this will do it.
However, this way also seems to use more power that I'd like. Last night the power consumption was jumping between 11 and 12 watts per hour the whole night, which is great IF it also stayed around 6c in the fridge but alas, it didnt. Today I did a test taking the freezer part off completely, setting the freezer to -12 and the setting the fridge to 6 so it would follow that. It would then get to the 6 degrees, and during that time the "freezer" side would get to about -12 or -13. Then the "freezer"t would gradually go up to around 2C or 3C while the fridge temp went up 2 degrees and then the cycle would repeat. This, on average was about 14 watts per hour so not too bad, and since the freezer is not a must for me, i can live with that.
I am now testing, if asking the system to follow a specific freezer temp (-16) - while having the freezer section attached - will give me a satisfactory fridge temp and less power consumption. . So far it seems that running at -16 stabilizes the fridge to about 7-8 degrees at an ambient temp of around 22-23. I have not tested the inside temperature with a thermostat, so the actual temp might be different. I have no idea where the temp sensors even are since without the freezer attached it still says -12 or more when its cooling down but it most certainly was not -12 in the fridge at that point.
Saw a lot of people here being baffled by the fridge so wanted to share my findings.
The fridge does not communicate this to you in any way and the logic is not what you'd expect as a user. I also dont know if this is how its supposed to act or if it's some weird bug. However, i fairly sure there are settings that will give me an ideal balance of power consumption and temps, it's just a pain to find it.