Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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Refrig section frosting up

The left rear wall of my refreig section has developed a frost patch about 8" in diameter. Both frig & freezer seem to be working ok but the frost is not normal. Any ideas on solutions?

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  • brianpietsch Jul 06, 2008

    I am having the same problem!  Please let me know if you figure anything out.  I will do the same.


    Brianpietsch34@hotmail.com

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repairing Sub Zero under warranty Sealed System. Evaporator Change Out HD video

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Do you have frost or Ice .. if you can remove the back cover check the evapator if you have a ball of ice You have a leak ,,, if less them 12yrs old call for service Sub-zero will fix it under warranty

Posted on Jul 08, 2008

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1 Answer

Frig has suddenly become warmer than usual. Freezer is at 20 degrees and frig at 60. Tried to vacuum coils but very dificult to reach them underneath the unit. Any other hints?


what the problem most likely is a failed part of the defrost system Do you see a bunch of frost built up on the back wall of the freezer? If you do frost build up, take off the back wall of the freezer and replace the defrost heater and defrost thermostat. A hair dryer could be used to melt the built up frost from the coil behind the back wall. Another part that will cause frost build up is the defrost control, that isn't the freezer behind the back wall but instead it is part of the main computer board on the back of the refrig. I would replace heater/defrost thermostat first though, since they are the most likely to fail parts.

I hope my answer will help you to fix your refrigerator,
Gene

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My maytag refrig. is 3 years old. model #747908 HS520AS. freezer on bottom-refrig on top. the refrig part is not staying cold. have cleaned under frig and vaccumed back and underneath and it still is not...


Hi,

All the cooling coils for this model are in the freezer section. There is a fan down there behind the back wall on the top. This fan directs air up to the fresh food section.

Check the temperature of the freezer you can do this by inspecting the ice cream, if the ice cream is soft you are above 5 degrees F. If you have a good cold freezer then the problem is with air flow, the evaporator fan that I spoke of could be bad).

If your freezer temperature is not as cold as it should be you may have a defrost problem, look for any signs of frost build up on the back wall of the freezer section, if you see frost you will most likely need to put in a new control.

If the freezer temperature is warmer than normal and you do not have frost you may have a sealed system leak, this will require a technician for sure.

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1 Answer

Refrig compartment does not cool on my new Kemore Frig.


Check and make sure the fan in the freezer is running. if not possible bad fan. If fan is running, check to see if you have any ice built up on back freezer wall. Normally frost type ice. If so, you may possibly have a bad defrost bi-metal mounted in the freezer section. Next could be a defrost timer control. Model number usally will help more in getting it right.

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2 Answers

Refrigerator is staying at 50 degrees, will not get any cooler


May be your computer board, not turning on the defrost heaters in the freezer section. The freezer will eventually get warm too. Are you getting frost build-up on the rear wall of the freezer? If you are, you can temporarily solve the problem by turning off the whole refrige for a day and open up the freezer door- put towels on the floor under the freezer doors. Then turn it back on - mine worked fine again. I am currently waiting for a computer board replacement. It is behind the metal plate on the back (outside) of the cabinet. Good luck.

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1 Answer

I have a model # HTS22GBMBRCC Hoypoint Refrigerator. the fan in the back runs all the time and I the fan inside the freezer is running all the time. Neather the Freezer or the frig is getting cold. I have...


Your model has no defrost timer . It works off a main control board . If there is frost on the rear panel inside the freezer , then you have a defrost problem . This would be another paragraph ( but let us know if there is frost and someone will be glad to help ) . If not any frost , then the compressor may not be running . If the compressor not running , main control board is bad Pt # WR55X10942 . You will have to pull out refrig and remove the panel covering at the bottom to check . The main control board , is behind the 8 " X 10 " panel at the top left , behind the refrig .

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1 Answer

Frig no longer cold


Hi, look inside freezer and see if there is a frost build up on the rear wall. Also listen to see if the evapotator fan motor is running.
Please let me know so I can assist you further.

Vic

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1 Answer

Refrig section not cold


thats blockage to frig area....get a cooler and put yer food in it and de frost....should be like new....if not the blower to the lower unit is most likely bad....depending on the age of the unit you might be better off (if affordable) to replace it...

May 10, 2009 | Refrigerators

2 Answers

Confused /


Ok the freezer section works the refrig section think of the refrigerator as a large cooler with an inlet and outlet hole cold air is blown into the refrig from the freezer via the fan motor in the freezer the really cold air comes in the top of the refrig and drops to the bottom of the refrig then it is sucked back into the freezer thru a vent hole in the bottom of the refrigerator ..GOT IT?? Now when a unit has a defrost problem there is an ice or frost build up in the freezer on the coil (bad heater,bad bi metal, bad timer can cause this) the ice builds and builds to the point where it blocks the air flow across the coil hence the air can not get to the refrigerator section making it warmer but the freezer section will work ok .. I hope this makes sense...Hint : A sign of this is a lg frost buildup on the back wall of the freezer.

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3 Answers

New Refrigerator Past Warantee Not staying cold


is the fan in the freezer running? if not then the air cant circulate and nothing will cool properly. if is running, is there frost build up on the inside back wall of the freezer? if so you have a defrost problem. if no frost on the back and the fan is running, remove the back panel inside the freezer and make sure all of the silver coils have light frost on them. if only part of them are frosted get out your manual and look at the warranty section. then seal system may have a 5 year warranty. if it does then call sear for warranty service. if the coils only have partial frost and its not under a 5 year warranty buy a new frig. because repair will cost more than its worth

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1 Answer

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Is your fan blowing in the freezer? Frost on the back wall of the freezer usually indicates a defrost problem... defrost themostate, heaters, take back panel off and check evap for frost build up and if your fan in working.

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