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Posted on Aug 29, 2011
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Not cooling properly, food is spoiling in the fridge and ice melting, foods defrosting in freezer. there is frost on the back of the freezer.

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Ginko

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  • Refrigerators Master 19,396 Answers
  • Posted on Aug 29, 2011
Ginko
Refrigerators Master
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Joined: Feb 13, 2008
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Hi.

The back of the freezer icing up means that there is a problem with the defrost system. When the defrost system is not working the evaporator coils freeze up , resulting in compressor and fan running most of the time and in reduced or no cooling as the condenser goes under stress and the system loses efficiency.

Defrost system problems are quite a common issue with refrigerators. Coils freeze because of a defective defrost system. With coils frozen the condenser will go under stress and will loose efficiency. The result is the system not producing enough cold to refrigerate the fresh food section while the freezer section instead keeps working.

Try disconnecting power overnight. Allow the freezer to defrost with power off. If the fridge works after that you have a defective defrost system. In that case the problem may come back after a couple of days. To fix the problem the parts comprised in defrost system must be tested, so to find and replace the defective part.

The defrost system comprises defrost thermostat, heater, defrost control and fan. The parts that fail more commonly are thermostat and heater. Both parts are located behind freezer firewall and tested reading impedance with a multimeter. Element and thermostat are faulty if they return Ohms infinity (the circuit is open) when reading impedance with a multimeter at the part's contact.

If thermostat and element are OK, the next part to be tested is the fan. Fan can be tested by simply checking that the motor is running when energized.

Here a tip explaining how to deal with a similar problem on a different fridge model: Fridge not cooling. Procedure is similar with your model.

You can find parts and diagrams for most appliances using the links listed on this page:
Where do I find parts and diagrams for my appliance?

Regards.


Ginko

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Related Questions:

0helpful
1answer

My frig freezes top and also spoils coleslaw freezes water beer tried everything

First, call your fridge vendor for service.
*** the following is for information only. ***
* You need a full defrosting as there is ice in your cooling coils.
* Move food items to another refrigerator.
* Do a complete DEFROST of the box. (unplug it.) Expect it to take 4 or more hours. You must wait till all water stops dripping out of the fridge. Keep checking the lower defrost drip tray at bottom of fridge. Dump out water from tray as needed. DO NOT you a hair drier or any other heat source! The heat will warp the plastic. Use a small fan to gently blow into the freezer section.
* DO NOT use an ice pick or sharp object to remove ice! Just let everything melt. (The problem of ice is inside the coils)
* Plug in Fridge but don't put any food in. Set dial temperature to the Mid range setting. Set to freezer venting to normal. Set the refrigerator to mid range. Let it cool down to 0 - 10 degrees and start making ice (in ice maker) If it does not cool down to at least 10 degrees F then call for service. Suspect bad thermostat, Blocked condenser coils, Bad pump, etc. Qualified service tech required to repair.
* Cooling okay? Reload food but don't stuff it in. Leave space between the walls to allow cold air to flow around foods. It will take a day or so to cool down food properly. Note: I may take longer if this fridge is near a heat source like a Hot water heater, Oven, Range, Steam radiator, etc.
* If your still icing up in 2-3 weeks. Then check if the coils are icing up. Defrost is not working. This needs to be checked by a tech. Have him perform annual maintenance.
* Check door seals. Kids leaving the door open? High humidity? * Note how everyone uses the fridge; are they putting hot food in it? Open hot steaming food adds heat and humidity to fridge. Hot food with thaw out other frozen food and build up frost.
* Final, Have a Tech check your fridge. Have them perform maintenance and replace worn items as needed.
Aloha, ukeboy57
0helpful
1answer

Why won't my fridge cool properly

This happened to me also, I had to let refrigerator defrost all the way by unplugging it. The lines that carry the freon had frozen so they were not circulating properly. I had to buy ice and use coolers for food, then wait till next day before plugging unit back in.

If you need further help, reach me via phone at https://www.6ya.com/expert/frankie_091f536560a54e12

1helpful
2answers

Not cooling properly

Hello,

First thing- set the controls at the mid range of their settings. Next, check the coils under the fridge to see if they are clogged with dust, etc. Next, using a couple stem thermometers, determine the temps in the freezer and fresh food sections. In the fresh food section, place a tall glass of water on a shelf in the middle, put the thermometer in and let it set for awhile in the fridge. Inside the fresh food section, look for the damper opening at the top of the wall in between the two sections. Wet the back of your fingers- can you feel air blowing through the damper opening? Inside the freezer section, look at the back wall- any frost buildup there.

Hope this help.....
0helpful
2answers

Both top sections fridge/freezer of my side by side are not cold

Sounds like a defrost problem. Remove food from freezer section, take the back wall out after removing shelves, and use a hair blower to melt off the ice and frost. Most likely you need to replace the defrost heater.
1helpful
2answers

Maytag Fridge (Model # MZD2766GEW) not cooling

Check to see if you have frost on the back panel of your freezer in your fridge. If you do your coil is frozen over and you'll have to defrost your freezer. I just did mine cause mine wasn't cooling properly on my fridge side.
1helpful
1answer

My refrigerator is not keeping my food cold or frozen!!

Poor cooling is often the result of a heavy frost build-up on the evaporator coils or a condenser that is clogged with dust, lint, and dirt.

Evaporator coils Poor cooling is often the result of a heavy frost build-up on the evaporator coils. You can't see these coils without removing a panel on the inside of your freezer. A sure sign that there is a build-up is the presence of any frost or ice build-up on the inside walls, floor, or ceiling of the freezer. Such a frost build-up usually indicates a problem in the self-defrosting system or damaged door gaskets.

The refrigerator is supposed to self-defrost approximately four times in every 24 hour period. If one of the components in the self-defrosting system fails, the refrigerator continues to try to cool. Eventually, though, so much frost builds up on the evaporator coils that the circulating fan can't draw air over the coils. There may still be a small amount of cooling because the coils are icy, but with no air flow over the coils, cooling in the refrigerator compartment is quite limited.

Here's an inexpensive, though inconvenient, way to determine if the problem is with the self-defrosting system. Remove all of the perishable food from the refrigerator and freezer, turn the thermostat in the refrigerator to Off, and leave the doors open for 24 to 48 hours. (Be sure to have several towels ready in case the melting frost and ice causes the drip pan to overflow). This allows the refrigerator to defrost "manually." When the frost and ice build-up has completely melted away, turn the thermostat back to a normal setting. If the refrigerator then cools properly, it indicates a problem with one of three components in the self-defrosting system:

  • The defrost timer


  • The defrost thermostat (also called the bi-metal switch)


  • The defrost heater


If it still does not cool properly, there may be a problem with the refrigerant level or the compressor. You may need to consult with a qualified appliance repair technician to further diagnose the problem
0helpful
1answer

Fan runs constantly and does not keep temp cool enough

forst on the back wall means you have a defrost problem or a air leak aroudh the door gasket-mike
0helpful
1answer

Fridgedaire Elite frost proof fridge part not cooling, Freezer sems fine

If the frozen side is colder than normal and some extra frost is forming where the fan blows,and there is ice in the bottom of freezer compartment, and the cool side is not cool enough, their is a good possability the defrosting unit is not removing all the frost and ice . the defrosting unit has a timer (usually near thermostat) that turns off the cooling fan and compressor and turns on a small heater around the evaporator ( about 20 minutes every 2 days) (evaporaror is cold heat exchanger coil inside the back wall behind a cover near the recirculating fan0, the fan circulates air to both compartments through two small openings, if these openeing are closed by ice buildup cool air can not circulate to the cool side. cure 1. remove all food and leave fridge off for 24 hours with doors open (take precautions to ensure children can't get locked in side and suffocate, if you get a qt of water in bottom of unit (may leak on floor) ice buildup that the defrost heater can not remove melted and was your problem . turn frig on replace food on unit. cure 2. turn frig off, remove food from both sides, remove shelves that block access to evaporator, remove cover over evaporator if you see the evaporator coils free of ice look at openings (2) to other side, one may be blocked with ice the other with frost, carefully melt ice with hair dryer.
If the evaporator coil is solid ice heater or timer or fan has failed. good luck
1helpful
1answer

Maytag MSD2651HES fridge not cooling freezer works find

Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.
  • possible causes:
  1. bad defrost timer
  2. bad defrost heater (in freezer)
  3. bad thermo switch in freezer
If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items.
1helpful
1answer

Fridge getting warm, defost not properly working...

Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.
  • possible causes:
  1. bad defrost timer
  2. bad defrost heater (in freezer)
  3. bad thermo switch in freezer
If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items.
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