[ThomasR7937]

Little help please. I replaced the Defroster in the freezer because the coils were freezing up and the fridge was warm. Well I guess this wasn't the problem because it's warm again. The only difference is the Coils weren't frozen this time, Just filled with Frost. (No ice) Any other Ideas out there? Thanks for your time. TOM

[woodchuck]

The defrost timer could also cause the frost to build up and eventually turn to ice.Refrigerator Repair Guide: How To Test the Defrost Timer - ACME HOW TO.com
If it is defrosting as it should check out the evaporator fan in the freezer It should be running until it reaches the colder temp you have it set for. Refrigerator Repair Guide: How To Test the Evaporator Fan - ACME HOW TO.com