Originally Posted by Nightshade

Condensation forms on the cooling tubes from the compressor sometimes and causes ice on the coils. Unplug it for a bit and let it melt away the plug it back in and should be good. If you can leave it unplugged overnight or even a full 24hrs to make sure it's clear. If that doesn't work then I have a brick for just such an occassion...discount just for you.