Freezer iced up, no air circulation

Removed the back panel of the freezer to inspect. The coils were totally iced up. Proceeeded to defrost coils with a heat gun. I then removed the defrost element to insepct and meter reading showed as open (infinite resistance). I ordered a replacement element and it arrive 2 days later. Replace the element and everything worked OK except for the ice maker. It seem that moisture had frozen on the motor impeller for the auger drive motor and locked it up. I removed the drive assembly and defrosted the motor impeller to free it. Everthing now is working fine.
Your blow up drawings made this a very easy repair
Thanks