They don't have to do this. The cheap materials in the compressor or cheap capacitors used on the power supply board will just silently fall. And the cost to repair the problem, for the average person, will be slightly less than just buying a newer version of the crap that just broke.
brewdad|4 months ago
First trip the repairman replaced all of the defroster parts and sensors. It failed again with the same code 18 hours later. The second time he replaced the main board and at least one other part. It now works great and I have effectively a new fridge aside from the compressor for less than $400.
Compressor still has three years of warranty left and we expect to move before then. It can (hopefully) be someone else's problem.