Dixie Narco 276 Error

[NDV]

Hey Guys,

      I am new to vending and purchased a Dixie Narco  276. I was attempting to change the prices. However after plugging machine in and with the door open, I press the program button, HD DOES NOT come up. It displays ERROR, then the only button that works is the 4th button that goes through codes 6725, 2288, 0003, and 0227.  I cannot get passed this point. 

  I have stocked the machine with soda. I have filled the change mechanism a 1/3 of the way with quarters, dimes, and nickels. Machine operates normal when door is closed.

 

Any Thoughts?