I have the same issue. I found the technical papers with some primitive troubleshooting procedures but enough to get an idea of what is going on. It says to check the voltage level on the main controller board connector to the compressor, “CON201”. With the compressor connector disconnected, unplugging the fridge and pluggin it in again and measure the the voltage on “CON201”. After 30 seconds it should go to 200VAC. Mine did not. The measurements were jumping all over from about 12VAC to 70VAC. The sheet recommended testing the voltage with the compressor connector connected and after 10 minutes check the voltage on “CON201” (you will have to push test leads into back of connector to make contact). It should be 80VAC. Mine was not. It was all over the place like the other measurement. So the next morning the fridge is suddenly operating normally again. I decided the check the running voltage at “CON201” again. It is still jumping all over but this time it is jumping up above 100VAC. Don’t know how long it will work and I don’t trust it. It may have been stuck in defrost mode but the only way to fix the issue seems to be to replace the main controller. Getting the part will take days as most places don’t stock it.