From most posts I've read, the defrost timer was the culprit so I blindly ordered one. Easy install but did not fix the problem so I broke out the ohm meter. The only other 2 items it could be all tested good with my meter so I bypassed the defrost thermostat (per forum help...actually quite easy)and it defrosted fine, which told me I needed a new defrost thermostat. Installed fairly easy and problem gone.
Based on the website I decided it was most probably the defrost timer, and that was correct. I ordered it, watched the video, and two days later the part was at my door. Took the nut driver, removed 4 screws, then removed the old defrost timer, installed the new one, re-installed the whole plastic assembly with the four screws, and done!!! Couldn't have been easier.
Evaporator was freezing up and was running non stop
I tested the components in the refrigerator defrost function. I used digital multimeter and checked for continuity. Defrost thermostat must 32 degrees or lower.
The repair was not the issue. When I received it there was no protection packing, no invoice and if you call the number, no one is there to help. The rack was plastic with no protection in box and it was damaged. Tried to resolve this matter with no response. Will never go through part select again.
Figuring out how to remove the cracked door rack was the most complication I had. Once I figured out how to push it up it was easy to remove and then replace it with the new part by just placing it over the nobs and pushing down. No tools needed, just hands.
Installation was fairly straight forward. The major complaint is that the problem returned 2 weeks later. I don’t know if I care to re-invest in another switch. Now what?
Thawed out freezer, I recommend laying a couple old towels in freezer to soak up melted ice. Replaced old thermostat with new part. Removed 2 screws, removed back plate, unplugged 2 connectors and cut 2 wires. Crimped in new thermostat and repositioned to original part location. Reconnected plugs as I reinstalled back plate. Installed 2 screws and connected power. Works like new! Trouble shooting and part installation video is very helpful, great site!