What would be the best way to defrost the freezer part of your unit?
Assuming you have an absorption refrigerator:
Turn the refrigerator OFF.
Wait an hour.
Transfer frozen food to an ice chest, Rubbermade tub, etc.
Use a hair dryer on LOW and do not go past the door with it (i.e. do not get the inside of the freezer hot-- it can distort the plastic.
Have a towel or sponge to collect the water.
After completely dry, turn it back on. Wait 20-30 minutes and put frozen food back in.
Ice is a good insulator-- most people do not defrost often enough.
I just put a small fan in, instead of a hair dryer.
best, paul