On the Motor there is a platsic piece in between the motor and pully do you have to have that in place or can I just replace the belt? 
Woodchuckie,
I’ve been in the HVAC business for over 25+ years and even today, I still am amazed that the simplest solutions are the ones that always work.
Resetting the temperature control worked. Thanks.
As soon as I receive and install the new defrost heater assembly this week the unit should be operating properly.
Thanks again for the input.
Joe M.