Chosen Solution
I am at my wits end. We defrosted the drawer freezer yesterday evening after we realized something had blocked the fan and the coils iced up a bit. I took the interior panel off and could see there was no ice anywhere. We plugged it in, and while the freezer went back to 0, the fridge went up to 54 and stayed there (we moved the food to the extra fridge) and unplugged the main one for 30 minutes, then back on, and it went down to 38 by 7 am, but by 9 am it was back in the 50s. Today I did the following after: double checked that the evaporator coils were completely defrosteddefrost thermal limit switch continuity testdefrost element continuity testevaporator fan continuity test, as well as while freezer plugged in and I held the switch that the drawer would keep down when the freezer is closedcontinuity test of damper, also moved it off of the hole coming up from the freezer compartment just to see if it would increase airflow. Temp only went from 74 down to 54 then maintained, freezer went from 70 down to 0. * The unit is now completely empty. All electrical and mechanical features that should be making the refrigerator cool down are in order.Coils defrosted. Damper is open. Seals are good. I am aware that there may be some motherboard issues that can affect turning these on and off, but that shouldn’t come into play if I am manually triggering them.What am I missing????
Hi @dahlia123 Here’s a link to the service manual for the refrigerator. On p.181 it shows that there are two thermistors that provide the temperature information by way of their resistance value, from the fridge and freezer compartments back to the control board (marked as NTC FF and NTC FZR on the diagram). I don’t think that you mentioned that you tested either of these components although the refrigerator thermistor is the one of more interest in this case. On p.29 it shows how to enter the system service mode and on p.30 Test 29 shows how to test the refrigerator thermistor. Also on the page it gives the resistance readings that the thermistor should have at the various temperatures. Here is the location for the fresh food compartment (i.e. refrigerator section) thermistor This just says fresh food compartment and this also shows where it is if you have a non dispenser model. As I don’t know the fridge hopefully you can find the location of the thermistor so that you can find it if the diagnostics say it’s faulty . If the thermistor is faulty here’s the part number and what it looks like 240597203. There are other suppliers, just search for the part number only. Hopefully this is of some help If you want to take a gamble without doing all the tests, this link to another supplier of parts for your model states that the thermistor fixes the fridge too warm problem 30% of the time ;-)
