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Bosch frost free fridge freezer is freezing up. The draws have a collection of ice on the draw runners causing them to stick and small bits have snapped off. There is also a collection of ice at the bottom of the freezer below the bottom draw. I have cleared all the ice out but it has returned. I only purchased it 10 months ago. Thanks

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  • barnesae Apr 10, 2009

    Bosch KGU 34121 freezer compartment bottom drawer frozen solid due to ice buildup despite being "auto defrost"

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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

Posted on Sep 27, 2008

The defrost thermostat (also called the bi-metal switch

Posted on Oct 25, 2008

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1 Answer

The fridge ok. Bottom freezer frosts/freezes up...cant even get the drawers to open...


pour hot water in an around the draws
even a funnel and a smaller hose attached to get past the draws

soak up the ice melt with towels

the draws should open

May 17, 2016 | Refrigerators

1 Answer

Water freezing on floor of lower draw under ice maker


Freezer /fridge water/ice in fridge and or freezer

Usually due to CONDENSATION due to bad door seals or a plugged evaporator drain line? Can use a soft flexable tubing and very hot water to clean it out. Bad door seals usually need replacement, but u can use a blow dryer and something to pry it closer to the door wall while blowing hot air on to it. To create a seal, to test for bad door seals place a dollar bill in between the door and wall of fridge where it closes. Then slide out the dollar bill with door closed. It should offer some resistance and not be easy to pull out.
Most all fridges have a drain. Look inside your fridge for a "V" shaped channel with a small hole. This hole leads to a tube and a small pan which sits on top of your refrigerator's compressor. The defrost cycle causes water to run into the channel, down the tube, and then it generally evaporates with the heat of the hot condenser/compressor.
However, if that tube is clogged with food crumbs, particles , debris etc, you will have to clear it to get back to a normal mode of operation. A toothpick, pipecleaner, straw or a cotton bud can often do the trick.
Even a frost free freezer will still ice up at times in the areas away from the heated defrost area and the drain line can freeze. This icing causes the pipe work to the compressor to ice over or sweat and cause a puddle. Or if the drainage has frozen over, it will need to be de-iced. ( usually the line is under the freezer bottom plate covering. Towards the back of the unit) And there is another inside the fridge area also.
Give the freezer a good overnight defrost until it's totally clear of ice in addition to making sure the drain is clear to the pan at the back and then restart the freezer.

Dec 05, 2014 | Refrigerators

1 Answer

My Bosch KGU3420GB fridge freezer keeps getting a thick layer of ice in the bottom of the freezer which then 'welds' itself to the bottom freezer draw. Any idea how to fix this?


Sounds like the drain is blocked and defrost water is collecting in the base. Try a full defrost and check the drain hole clears.

Apr 23, 2012 | Refrigerators

1 Answer

The bottom of my fridge is frozen alonge with the fridge food


Hi sir
it bis thgermostat problem,(heating element),,,so the heating is not done properly by thermostat,,so u should check iot,,,
thank u,,,please rate it,.,,,

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1 Answer

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Mar 14, 2009 | Bosch Refrigerators

1 Answer

Bosch KGU44120 frost free fridge freezer (6 years old) generates ice on floor of freezer compartment within a couple of hours. Maintains -20C temperature no problem.


drain is blocked in freezer. take back panel off inside the freezer and you will probably find that the bottom is covered with ice. melt off with a hairdryer and hot water till water flows freely down the drain. needs a bit of patience

Jul 04, 2008 | Bosch Refrigerators

1 Answer

Bosch frost free fridge freezer not freezing ice cream/pops at all and meat not totally frozen


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.
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  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. If it still has a problem then it might be the compressor and you should probably replace the machine.

Jun 28, 2008 | Bosch Classixx KGV28323 Bottom Freezer...

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Freezer fan


actually, freezer fan has to come on otherwise how is the fridge supposed to cool.(fridge draws off from the freezer compartment). check if there is power to the fan. if freezer is nice and cold and fan does not run(assuming there is no power to the fan at that time, then you would need to check your freezer thermistors after that, your board. all this is assuming you dont have a blockage or shortage of gas in the sustem.

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