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Please help!!! I apparently have a problem with my defrost cycle. The fridge stops cooling first After ~ 3 days, the freezer stops too. I have ice frost build up in rear inside wall. I powered down and defrosted manually for three days. and it started workign perfectly - but only for 2 weeks! now i have the problem again. Should i just call someone and aks how much it is to repair all three - timer, thermostat and heater? TIA! folasanmi@hotmail.com

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  • dips69 Oct 11, 2008

    mines a zanussi electrolux frost free fridge keeps over freezing

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  • Freezers Master
  • 903 Answers

If not defrost, could be timer, or heater is not working for some reason. Bad time can cause lots. Compressor could run during defrost, heaters not working, and such. Doubt that the t'stat would be the fix. Could be having a defrost cycle that is too short. Repairing all 3 plus the cost of a tech could get very pricey.

Posted on Feb 13, 2009

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Check your defrost timer also make sure its turning also there's a thermostat and heating element that defrost the ice at given cycles

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Fridge freezer stoping after 24 hrs


most of these freezers have an automatic defrost cycle.
after so many hours of chilling it will stop and run a de-icing cycle.
this is accomplished by one or two heating elements.
if one of the elements is burned out it will not run the defrost cycle.
and will ice up quickly.
depending on the model the heaters will usually cost about 15 to 20 dollars and they are easy to replace.
look up the model of your freezer and download the pdf files they will usually have a pictorial diagram showing the location
a defrost timer usually does nt fail on them unless it is physically damaged.

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Our sub zero seems to defrost in cycles. Not sure why ice cream melts in there while other meats remain frozen. Is this an expensive problem?


Hi,
The defrost may be lasting too long....and ice cream is always the first thing to melt... you need at least 10 F to keep ice cream hard...
Check out these tips...they can help you figure out whats going wrong with your refrigerator and why it is not cooling

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heatman101

Sep 08, 2010 | Sub-Zero Freezers

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Not freezing


Either the defrost circuit has failed or the refrigerant is low - my money is on the defrost circuit.

Most defrost circuits have three main parts:

1) defrost electric heating coil
2) defrost terminator
3) defrost timer.

The heating coil and terminator are in the freezer compartment - behind a protective panel. The heater is usually piggy-backed on the freezer coil and the terminator is in contact with the freezer coil to detect its temperature. The defrost timer is a simple assembly of a clock motor with switch contacts that can be located anywhere the manufacturer desires. The timer turns on or enables the defrost circuit every 8 or so hours for up to 30 minutes give or take.

When the timer has enabled the defrost cycle, the cooling mode ceases; the compressor shuts off and power is sent through the terminator to the heater. The heater warms and melts any ice build up on the freezer coil. The water drips to a pan and flows down the tube to a pan under the fridge - where it is evaporated off. The heater warms the freezer coil until either a) the timer returns to cooling mode or b) the terminator senses a preset rising temperature on the freezer coil. Once either condition is present, power is interupted and heating stops. The compressor is energized through the adjustable thermostat in your fridge. Since it is warm, the compressor turns on and cooling begins.

If any of the components listed above (1,2 or 3) have failed, the defrost cycle never warms the freezer coil and the ice never melts to clear the freezer coil as intended. Air can not be circulated through the freezer coil since it is choked with ice, so even though the compressor runs, the fridge and freezer spaces never get colder. The adjustable thermostat never sees the temperature you've set so the compressor never shuts off.

Water dripping in the fridge is melting ice from the freezer space - as the freezer is not getting colder - only the protected space around the freezer coil is.

To fix this, you'll have to get the service manual or schematics for the fridge to determine where the parts are located and do some troubleshooting with a multimeter after disassembling the freezer compartment and wherever else to access the timer if needed. This is not a good first appliance repair job for a DIYer due to the danger of refrigerant and testing live electrical parts in closed in spaces.

I hope this helps.

May 20, 2010 | Kenmore 20.3 cu. ft. / 575 liter Upright...

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Fridge freezer side by side running constantly but not cooling.


Make it a habit to defrost it every week. You see, when ice forms around the evaporator tubes (which runs around the walls of fridge and freezer), heat exchange reduces (that means heat is no longer absorbed from the things inside the refrigerator) and cooling stops. See whether freezer walls or fridge walls are damaged. Do not use knives or any other sharp tools to remove ice. Do not forcefully remove items that are difficult to take out from the freezer. Defrost and remove them.

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Intermittent freezing and fridge warm


The ice builds up in the freezer compartment because the defrost cycle is not working. Check the timer , the defrost elements the defrost thermodise.
God Bless.

Jul 07, 2009 | Freezers

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Check the defrost timer. Rotate the dial on it to see if anything changes.

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You have a defrost problem. It means you have 3 parts that can be involve ( timer, defrost thermostat, element) most of the time it's the timer. Hope it was helpful. :)

Francois

Aug 25, 2008 | Freezers

2 Answers

Water Dripping Inside


Sounds like a blocked defrost drain. By "American" I presume you mean side-by-side.
I had a similar problem with a freezer-on-top style Samsung. The solution to that was to defrost the freezer, remove the false backing plate in the freezer (required removal of the ice cube tray. the panel just pops out with a bit of pulling). The drain hole beneath the freezer coils was blocked with ice. This drain passes down into the fridge and then out the back of the fridge into the evaporation pan next to the motor. There is a collector pan under the freezer coils, this and the drain hole were filled with ice. When the freezer goes into its self-defrost cycle the water collects here and then overflows into the fridge.
I removed the ice with hot water/vinegar mixture (so it doesn't re-freeze immediately) and simultaneosuly used a bit of chiselling with a screwdriver to clear the drain plug. I did this from inside the fridge working up the drain hole into the freezer. The whole job took about an hour.

Aug 24, 2008 | Freezers

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