How long do you leave it off when doing a "reset?"

Your Express Thaw controls won't go to any other setting?

Is the condensor fan running (warm air blowing from the bottom front)?

Is the evaporator fan running inside the freezer section?

Possibly a problem with the defrost components ... heating element, temp-limit sensor or some such. If it doesn't defrost on whatever is the normal period, the cooling coil will get "clogged" with frost accumulation which obstructs airflow.

I opened up back, got all dust out.
The fan was coming on and off, temps still rising.

The Express Thaw light stays lit to 3lbs.

I reset the cood/warm buttons inside fridge. It says to hit warm until it says OFF. Then hit one of the cool buttons and it should reset. Didn't do a thing.

Then I read online that you unplug, replug in, switch icemaker off then on, then push the ice lever 3 times. This is supposed to reset to factory settings.

Now the fan will only come on if you open a door. Once shut, it turns off.

Both freezer and fridge say 68 and nothing is coming on anymore.

Can also be a bad motherboard. Everything about this unit -- compressor, defrosting, all the fans -- is controlled by a computer board, mounted behind a panel on the rear.

Then I read online that you unplug, replug in, switch icemaker off then on, then push the ice lever 3 times. This is supposed to reset to factory settings. I believe the purpose of this procedure is to manually trigger the ice maker to run a harvest cycle ... and has nothing to do with operation of the refrigerator.