The Defrost heater assembly was apparently broken and it was replaced. I guess we didn't need the defrost timer, but will probably keep it just to have it on hand in case it would go bad. The project only took 30-60 minutes because we had to unload the whole freezer and defrost the coils before we could change the heating assembly. Actually changing the assembly took maybe 10-15 minutes. Wish shipping would have been less but we had to get it fast because we were losing all our food. I just went to the store for so we did the next day at almost $25. :-( Good thing was it did come the very next day by about 2 pm! So far, the freezer is back down to 10 degrees and the fridge is back to 38-40 degrees.