Magic Chef - freezer plennum freezes up and neither are cold enough.

Serial # 050101734 Magic Chef freezer has frozen since new, tenants never complained. Ice covers the fan. Takes forever to defrost it.
The freezer doesn’t freeze and the bottom is warm.
Thanks in advance!

Very likely there is a faulty defrost system. You can find the troubleshooting procedure in one of our previous threads: http://forum.appliancepartspros.com/refrigerator-freezer-repair/4221-freezer-fine-refrigerator-too-warm.html

Gene.