SOURCE: Whirlpool Freezer Model #EV150NXENOO
This one sounds like the defrost timer is not working and you are not getting a defrost cycle every 6-8 hours (or when needed). Another issue could be that air (moisture) is getting in from a leaky door seal, etc. and causing the freeze up. If you have a sealed system problem where the cooling coils are not uniformly frosted up then the defrost thermostat will not "know" there is an ice condition and therefore not go into defrost mode (same issue if the defrost t-stat is bad). After you have ALL the ice out of the unit it would be a good idea to take the interior rear cover off so you can view the coils. Start the freezer back up and watch over the next 1/2 hour or so to see that the entire coil is frosting up uniformly. If it isn't you may have a plugged system, a leak causing low refrigerant, etc. If over time the coils look uniformly frosted up you may have a defective defrost heating element itself (no heat, no defrost sort of thing). The defrost elements can be checked with a multimeter for continuity if you know how to do that sort of thing. It's hard to know a person's ability by these forums or if they can tackle certain test procedures.
SOURCE: Upright freezer door inside developing ice
The door seal is at fault. Regardless of the small tear it is not sealing well.
Take a dollar bill and close it in the door. Then pull on the bill to feel resistance.
You will find it pulls easily in some place. That is where your air leak is that is causing the condensation.
Do this about every 6 inches all the way around the seal.
SOURCE: Upright freezer not cooling adequately
Go to there website and see if you can find your model. You can also contact them from there.
http://www.aeg-electrolux.co.uk/node145.asp?CategoryID=2595
Also get yourself a stand alone fridge and freezer thermometer - leave it in for an hour -that will establish what the temperature really is which will help in diagnosing the cause.
Also trying unplugging it for 15 minutes so the display board loses power - then plug it back in - sometimes that will reset it.
SOURCE: The top shelf in my upright freezer ices up badly;
If this is the type of freezer where the shelves are the evaporator coils, the coolant goes through the shelves(tubing) and the formation of frost is normal and has to be manually defrosted.All the shelves should be as cold asd the top one. The fact that just one has any frost may indicate that it is low on freon. If this is the case you should notice that the freezer doesn't get cold enought.
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