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Electronic frost-free fridge ices up about once every ten days

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  • georgeharris Nov 02, 2008

    We bought a new fridge, and have put the old one in the shed. Have no confidence in the manufacturer's service arrangements, which is a closed shop. No other agent can buy parts, get tech information, or anything, so they will not touch them. The manufacturer has a flat fee call-out system, and the cost goes up from there. I can't bring myself to sell this thing to anyone else, so it is now an air-tight cupboard in my shed...!

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I have the same problem and I thank you because now I can fix it myself and the repair man can stop scamming me for money to fix something else that wasnt the problem. THANK YOU!

Posted on Nov 02, 2008

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  • Master
  • 958 Answers

You have a defrost problem.

3 things.

1 - defrost heater gone bad.
2- bi-metal / thermo-disc gone bad.
3 electronic timer or mechanical timer gone bad.

tnx 4 using fixya,

drcool

Posted on Sep 14, 2008

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Freezer cools well, refirgator is warm, the vent that brings air from frezer to refrigator has no air movement, ice inside , i broke some ice with knife shoul di spray hot water to get rid rest , I did...


This answer will be somewhat long, but in order to understand the "fix" for your problem you need to understand how a refrigerator-freezer works.

Most units have ONE COMPRESSOR which usually cools the FREEZER. Then, to cool the fridge area, there is a DUCT or ducts between the freezer and the fridge area to move some small amount of very cold freezer air into the fridge section. In the old days this occurred by convection, but most newer units have a small fan in the duct to more dependably move the air.

The run time of the compressor, and thus the temperature of the freezer is usually controlled by a THERMOSTAT [usually with numbers on the dial]. A second control [usually with the letters A, B, C, and sometimes even D] operates either a DAMPER in the duct, or controls the duration of fan operation in order to control the temperature in the fridge section.

Under certain conditions of higher humidity, FROST [fine ice crystals] can build up in the duct, and on the fan if there is one, reducing or totally blocking the cold air flow from the freezer to the fridge section.

From your description of the freezer working well, but the fridge section being "warm" suggests that blockage of the duct is what has happened. However, there are a couple of other possibilities:

1. You inadvertantly moved the fridge control to a warmer setting,
2. You inadvertantly placed something in the freezer and/or fridge which BLOCKED the entrance or exit of the duct,

IF one of the above are the cause, a "manual" defrost of a few hours with the freezer and fridge doors open to allow warmer air in should melt out any frost/ice from the duct and allow the system to work properly. Depending on the severity of the frost/ice buildup, it could take a couple of days to fully melt all the frost/ice.

During the manual defrost ALL frozen and perishable foods should be temporary stored in an ice chest or cooler of some kind.

One more thing, in addition to heavy humidity, frost/ice buildup can also be caused by a defective automatic DEFROST TIMER. IF the system does not do its regular defrost cycle [usually an hour or two once in each 24 hours], then frost/ice buildup can occur even with "normal" humidities.

So, once you have the system back in operation, watch for the normal cycling of the defrost program, and if the problem continues, contact a qualified refrigeration repair technician to repair or replace the defrost TIMER.

Jul 13, 2011 | Refrigerators

2 Answers

My side by side Fridge has been running at 13 degrees for a few days.,the freezer is normal. We noticed some "ice build up , took the cover off and all the elements etc... were iced over, we have...


This is what is happening. All "frost free" refrigerators are not truly frost free. The cooling comparment elements frost up with moisture from the air. Every 6 or 8 hours or so the fridge shuts down. then . small electric heaters fitted into these cooling elements melt the frost away. The water goes down a tube into what is called a drip pan mounted underneath the fridge. If the drain tube clogs with a piece of paper, or food or algae. The water from the frost melting stays in the pan because the drain is clogged. So each time the fridge defrosts, it builds up ICE not frost and eventually it completely clogs with a block of ice.
The other thing that can happen, is that the timer that controls this cycle fails and the heating elements never turn on. The the fridge then clogs with frost. The fridge will clog with frost if any of the following parts fail. The defrost thermostat which opens up the heater circuit when the coils reach
around 40-50 degrees, the defrost heaters mounted in the cooling coils, or the defrost timer fails.
If your fridge works normally after this, then the drain hole was clogged and you unclogged it. If it gets colder and colder again. Then the timer, defrost thermostat, or the defrost heaters have failed.
Hope this helps. You are welcome to write back to me and tell me what is happening with your fridge. I hope this helps, Best Regards, Mark

Dec 28, 2010 | Refrigerators

1 Answer

My westinghouse freestyle frost free 650 litre is


The fridge need to be devrosted open up freezer door take back of and look if all ice gone from freezing rods restart if same prob it looks like fan not going or heating element not workingon

Nov 08, 2009 | Westinghouse Refrigerators

1 Answer

Frost free freezer icing up


It should still be covered under the warranty.

How to check everything
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php
check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.

Sep 02, 2009 | Amana ATB1832AR Top Freezer Refrigerator

1 Answer

The freezer compartment on my fridge keeps icing up over a couple of months. How can i prevent this please.


if the freezer has air and the rear freezer wall has frost on it, the evaporator coils are iced up and need defrosting. causes:
1. low refrigerant
2. no fan
3. too much humid air in fridge/freezer due to door open or bad door seals
4. the condensate drain tube is clogged

if the seal around the door is ripped or not completely sealing, or there is condensation at the bottom or the walls of the fridge, replace the seal(s).

no air, no fan. Replace

if the refrigerant is low, it just needs a top off. but you need to be certified by the epa to move refrigerant, so get a professional.

defrost solutions:
unplug the fridge. remove the wall of the freezer that is frosted/icing up. use a hair dryer to melt the ice. do not get too close. you will see a drain under the evaporator coil. make sure it is not blocked. the water should run freely to a condensate pan under the fridge that evaporates the condensation with the hot line from the compressor. once the coil is free of ice, frost, and water, replace the panel and repair any of the problems that caused the icing up. plug the fridge in and turn it on. If it frosts up within a week, there is still an issue that not been taken care of.

Sep 01, 2009 | Refrigerators

1 Answer

Zanussi frost free fridge freezer leaking


Your drain tube may be stopped up with ice at the upper end because it drains too slow because it's stopped up at the lower end in the evaporator pan under the unit at the floor. It can get dust and mold in it. Once you get the ice out at the top a little pressure with a turkey baster will usually clear it out. Flushing it out with hot water and clorox may help. Make sure it drains quick enough to prevent refreezing. . The drain should be located below the evaporator coils on the lower back of the freezer.

Jul 01, 2009 | Refrigerators

1 Answer

Whirlpool Fridge Freezer not working fridge is


ID THERE FROST BUILDING UP IN THE FREEZER?IKE

Mar 14, 2009 | Whirlpool ET4WSKXS Top Freezer...

1 Answer

Ice forming on freezer


The drain is plugged. This fridge will defrost every 8 hrs or so. When it does , it will melt the frost that has built up on the evaporator. This melted frost will run down a drain under the evaporator to a drain in the bottom directly under the evaporator. When the drain gets plugged the water cannot drain out of the freezer compartment. After several defrost cycles the melted frost will overflow onto the freezer floor. When the fridge starts back up it will freez this water is the bottom of the fridge. sometimes this water that is now ice will melt on the next defrost cycle and actually run out into the floor. You will have to unplug the fridge or turn it off, then remove the cover to the evaporator. Get a hair dryer and melt the ice aruond the evaporator and drain. Once the ice is removed, check the drain and try to clear it. Once clear, replace everything but the shelves. Plug the fridge back in or turn it back on. Observe and listen for the evaporator fan. It should be running now. When working on the ice on the evaporator always be carefull. The defrost heater can be damaged if up push or pull on it too much.

Nov 15, 2008 | Samsung RF265AA Bottom Freezer French Door...

1 Answer

Back of Fridge icing up


If the fan is running you more than likely have a defrost problem.
look at the back wall of the freezer section if it is frosted up. it's not defrosting.
There three components in this system. The defrost heater, the defrost termination stat., and the defrost timer. Newer refrigerators do not have a timer per say it is build into a electronic board usually mounted on the back of the refrigerator under a metal plate. The termination stat is the cheapest part @ $ 25.00. The heater should run @ 50.00 to 70.00. The board could be as much as 200.00 or more. If the refrigerator is over 10 years old you may wish to look into getting a replacement. Appliances are designed to start failing after 10 years old.
My opinion.
If you unplug the refrigerator let it defrost then plug it back in. it will work properly about 3 days before it frosts back up.

May 17, 2008 | Miele KFN8762SDED Bottom Freezer...

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