Hello all, sorry for bump again.. i have a similar problem. i have a KRFC704FPS04 - 6 months old.. RC is lukewarm with the bottom crisper compartments keeping cool. temp controlled tray at the very bottom of the RC is freezing and frost forming. RC fan pushes air through air tower randomly but infrequent it seems. tech came out today with a new logic board and front UI panel. doesnt seem to have helped. a couple weeks ago when i noticed the issue, i also ran the tests and on test 57, fan did turn on. presumably the tech checked the thermistors before concluding that it was the logic board.
anyway after reading this thread and
We've had this refrigerator for about two years. The temperature in the middle of the refrigerator is about 55 degrees. The freezer is working fine. We had a tech come out and he shotgunned the fix by replacing the control board and UI board. That did not resolve the issue. I'm going to have...
im also thinking that its the evap cover thermistor/fan assembly. what i did notice tonight was... after i run test 57 for about 1min and then bring the fridge out of test mode, the fan does blow out of the air tower for a little bit.. is there a correlation or is it just coincidence? Like the OP, i did notice that test 1, RC thermistor, was 35 but the temp of the fridge was closer to 47. does this confirm a bad thermistor as well?
any help would be appreciated!! thanks in advance.