Question about Samsung Refrigerators

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Samsung RS2545SH Side by side evaporator coil will not defrost

I have a Samsung Side by side refrigerator. The refrigerator side does not stay cold. The evaporator coil frosts up and then the air is not able to flow through. To fix it i take of the back, defrost the coil and then it will work for about 5 days.

I have replaced the fan, thermostat, and heat sensor to no avail. The refrigerator hums and then stops so it appears that part is working. It just won't defrost the evaporator.

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  • Bob Henry Feb 04, 2010

    I was hoping to get an expert that has experience specifically with Samsung Side by Side that i have.

  • Bob Henry Feb 05, 2010

    I checked the parts drawing and there is no heater on the evaporator coil in the refrigerator compartment. So i am not sure how the evaporator gets defrosted. I changed the thermostat but that did not help. For sure the defrosting is not working. Any ideas?

  • Bob Henry Feb 06, 2010

    Thanks that was great info. I believe this unit was built by Maytag and that was bought by Sears. To get parts, i contacted sears parts direct. In your experience will sears honor the warranty. I bought the unit 3 years ago from Costco. I am in Southern California.

  • Bob Henry Feb 07, 2010

    Yes - i feel this specialist had experience with my model of refrigerator and diagnosed the problem exactly.

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Hi, I am not sure what all has been said on this post, since we don't always get to see the other technicians advice, but here is mine. Your defrost heater in your refer section, is an integrated evaporator/defrost heater. We have seen way too many of these fail, as it is a poor design to run two heaters on two evaporators the way Samsung does. Luckily for you, if your refrigerator is under five years old, you have a five year freon system repair. And since you cannot replace the heater without replacing the freon system evaporator, this is under warrantee for the five years. The only problem is finding a Samsung warrantee company that will do this for you. Call Samsung and see if there is a servicer in your area. If this is out of warrantee then your machine is not worth repairing, usually a 900 to 1100.00 repair in my area of Seattle. This problem you have, can also be a bad main control board or wiring, but this is pretty rare. Good Luck, Appliance Specialists

Posted on Feb 05, 2010

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Have you checked the defrost control and the heating unit and made sure its defrosting the evap coil,you hadn't posted that you did this,also check the doors for air leaks from outside warm air getting into compartments which will condense and freeze

Posted on Feb 06, 2010

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DEFROST PROBLEM
The evaporator coil behind the cover on the back wall inside the freezer will ice up under normal conditions. Every 8 to 10 hours for around 20 minutes the defrost timer (or in most newer models the electronic adaptive defrost control) will turn the defrost heater on to melt the built up ice. There is a defrost thermostat which prevents the heater from overheating the freezer by breaking the heater circuit when the temp reaches close to 32 degrees F. The entire cooling system shuts off during the defrost cycle and starts back when the timer advances through the cycle.

If this ice is not melted it will continue to build up until the air can’t flow over the coil to circulate the cold air through the freezer and into the fridge. The temperature change in the fridge is usually noticed first followed by the freezer.

If the defrost thermostat is bad, it can prevent the heater from coming on OR it won’t turn the heater off when it gets too warm. It is clamped to the evaporator coil at the top to sense the temp. If it appears to be misshapen it is bad.
With an ohm meter it should show continuity when cold and none when warm.
You can also bypass(disconnect the two wires plugged into it and twist them together) the thermostat to see if the heater comes on then. If it does then you know the thermostat is bad and needs replaced.

The defrost heater is located on the evaporator. It is in a tube which is at the bottom and can also go up the sides of the evaporator. On some types you can see a burnt spot if it’s bad. With an ohm meter it should show continuity from end to end when disconnected from the wiring in the freezer. You can also test the wiring for voltage when it’s in the defrost mode.




you have an adaptive defrost control instead of a timer, replace it if the heater and thermostat test good. It is located on the back i.

Your electronic control is part 6 on this diagram. http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5177266&diagram_id=1342962#d1342962

Posted on Feb 04, 2010

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Hi,

Check the Below Guide Written by Me :-

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Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Jan 30, 2010

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Posted on Jan 02, 2017

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Manually defrost the evaporator and clean the defrost condensate below each evaporator. If that drain becomes blocked it will cause these problems to happen because when water has nowhere to go the water will freeze on the evaporator. I have seen these symptoms in many Samsung RS2630SH models. Let me know what you find, Thanks Sea Breeze

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Freezer too cold


A refrigerator or freezer that is cooling, but cooling poorly, may have a problem in one of several areas:

Evaporator coils
Condenser
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

Condenser Self-defrosting refrigerators all have a set of coils and a cooling fan, usually under the refrigerator, that need to be cleaned regularly. If these coils get coated with dust, dirt or lint, the refrigerator may not cool properly. The coils may appear to be a thin, black, wide radiator-like device behind the lower kick-panel. To clean them, disconnect the refrigerator from the power source, use a refrigerator condenser brush (see the Appliance Accessories section) and your vacuum cleaner to clean the coils of any lint, pet hair, etc. You may not be able to get to all of the condenser from the front, it may be necessary to clean the remainder of the condenser from the rear of the refrigerator.


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1 Answer

Samsung fridge RS2545SH every 7 days freezes fridge coil.


Hey how yo doing? on most refriderator there are two important parts to keeping freezer from freezing over, they are the bimetal thermostat and ice pipe heater. The bimetal therostat is a preset thermostat that ranges from 54degrees farenheit to about 60, when the coils (inside the freezer compartment behind the back panel) reach the preset temp. it closes a circuit and send electricity to the ice pipe heater, to warm the freezer coils preventing from freezing over. if any one of those components fail, your freezer will continue to freeze solid until there is no more space for ice to build on coils decreasing air flow from the evaporator fan blowing air into your fridge.To test you will minor knowledge on using a multimeter.(REMEBER TO UNPLUG REFRIDGERATOR BEFORE SERVICING, IF YOU UNCOMFORTABLE WORKING ON APPLIANCE PLEASE CONTACT A PROFFESIONAL REPAIR SERVICE..) If you'd like to continue please respond.
GOOD LUCK, WORK SAFELY..

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