Kitchen aid fridge Not making ice

Freezer is not making ice. We have replaced the ice maker, ice level boards and auger motor. Ran everything threw manual harvest and it filled with water, heater came on on icemaker and in the full tube. The temperature is set to -2. We have 14.7 volts to the optic boards. 120v to the icemaker. It has dumped ice 1 time on its own since everything was replaced 3 weeks ago. Both door switches are good and both are making good contact when the door is closed. Am I missing something? Is there anything else it could possibly be? Maybe a bad icemaker from factory not common but possible. And I do have the tech sheet, I have been threw it 3 or 4 times. Please email me back at. bryan@drappliances.com