Defrost Timer on Sub Zero 211RFD

My Subzero refrigerator cools to 50 degrees the freezer is at 31. Based on reading the forum I believe my problem is a faulty defrost timer. Can anyone tell me where the timer is located on this old Sub Zero Freezer on bottom)?

Thanks
Jerryc

Hi Jerryc,

The first thing I would do is clean the condenser coils on top of the refrigerator and check how the fan there is working.

I don’t think this problem is connected to the defrost timer.

Gene.