Question about Samsung RS2630SH Side by Side Refrigerator

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Samsung RB2055Sl Top refrigerator couling coil freezing up every 2 or 3 weeks

I have a RB2055SL
The top refrigerating coil is freezing up ,then the air from the fan will not flow thrue the coil and the refrigerator temp goes up to 10.

The auto defrost does not seem to be working.

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  • Anonymous Sep 10, 2008

    I have the same problem. I wonder if there is a problem with this modle?

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The problem is freeze up. Bad door gasket or too much window shopping are the biggest issues. Could be low gas. Either take off the back freezer panel and defrost or unplug for 2 days to defrost fully. Oh, and clean the condenser coil. Then, let's see what the unit does.

Posted on Dec 19, 2007

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Sub-zero Refregrator 352 Freeze cooling properly, but Refregrator only cools to ~50f. Stays off until ~70f, when set at lowest temp (10).


Fans working and air flowing thru the cooling coils?
The inside fan warms the evaporator, or cooling coil. If this coil does not go thru a defrost cycle or if there is ice build up to the point no air gets across it, that could be the scenario.Then it would need defrosting, or inspection to make sure there is free air flow both inside and outside the fridge, including the defrost timer if present. If all this checks out ok, then the refrigeration circuit is to be looked at by a technician.

May 15, 2018 | Sub-Zero Refrigerators

Tip

Why your unit is freezing up.


To understand why your AC or heat pump is freezing up, it helps to know how your system works.

There are 7 major parts to an AC system, 9 with a heat pump.

1 - Condenser/heat pump (The outdoor unit)
2 - Air Handler (the indoor unit unless the system is a package unit, then all is outside in one system. The air handler is usually found under the home, in an attic, or in a closet.)

In the condenser are the following major parts.

3 - Compressor
4 - Condenser coil
5 - Condenser fan
6 - (HPs only) reversing valve

In the air handler are the following major parts.

7 - Blower motor
8 - Evaporator coil
9 - (HPs only) electric heat strips

Some systems known as "dual fuel systems" use another heat source in place of the heat strips, usually a gas furnace. I will address gas furnaces in another post.

When an air conditioner is operating properly several things are taking place.

1 - The compressor is compressing or "pumping" refrigerant through the system.

2 - through changes in pressure, the refrigerant makes the evaporator coil get very cold, and the condenser coil gets very hot.

3 - The blower motor/fan circulates air across the evaporator coils, as the room temperature air (Also known as "indoor ambient") goes through the cold coil, it exits, cooled approximately 15 to 20 degrees cooler than when it entered. (In a ducted system, the blower is also the fan that circulates the air throughout the home.)

4 - The condenser fan circulates air across the condenser coils. As the outdoor air goes through the condenser coil, it removes heat from the coils that are very hot. This in turn removes heat from the refrigerant so it can run its cycle again, and through pressure changes, cool the evap coil.

5 - With a heat pump, the reversing valve reverses the flow of refrigerant in the condenser and evaporator coils.
In AC mode, the evaporator coils get cold, and the condenser coils get hot. But in heat mode, the evaporator gets very hot, and the condenser very cold.

Now, whichever coil is getting cold will freeze up if there is inadequate air flow across the coil, as the refrigerant in it is far below freezing, and there is not enough airflow to keep the humidity in the air from freezing on the coil.

Things that can cause poor airflow are,

1 - Dirty/clogged coils
2 - dirty/clogged filter (will only effect evaporator coil)
3 - Closed/blocked vents (will only effect evaporator coil)
4 - Malfunctioning or dirty fan

Low refrigerant will also cause a coil to freeze up, reduce efficiency and cause the system to run for long periods of time. Not to mention, shortening the life of the unit.

With a heat pump, in heat mode only, the condenser (outdoor) coil will routinely begin to freeze up in cold temperatures. This is due to the fact that the refrigerant is below freezing, and the cold outdoor ambient temp is not warm enough to keep the condensation in the air from freezing on the coil.

Note, a properly working AC should never freeze up.

A heat pump is equipped with defrost controls to prevent ice buildup.
Some are controlled by timers, some by temp.

When a HP is going into defrost mode, the condenser fan shuts down, the reversing valve reverses the flow of refrigerant and the once cold condenser coil now gets very hot, defrosting the coil. (Many people have said this process sounds like the unit is coming apart, or about to explode and are frightened by the "smoke" which is really just steam from melting ice that comes off the unit.)

During defrost mode, the secondary or "auxiliary" heat comes on to ensure that you are still getting warm air from the vents. (Again, this can be electric heat strips or a dual fuel system)

If you are experiencing cold air from the vents during defrost, that means your auxiliary heat is malfunctioning.

The auxiliary heat is used for three purposes.

1 - during defrost mode to maintain warm airflow (automatic)
2 - when the HP cannot maintain the set temp due to extreme outdoor temps. It comes on when the indoor temp drops several degrees below the set temp on the thermostat (automatic)
3 - For emergency heat source when the HP is not working. (Manual)

To recap....

Iced up coils?

Poor airflow
low refrigerant
Malfunctioning fan
failing defrost system


There are two things that can be done in a pinch to help de-ice frozen coils. This may get you by until the repairman can get there, or you can fix the system if you are a do-it-yourselfer.

HPs frozen outdoor coil in heat mode, not going into defrost?

Cover most of the vents, and turn the system onto cooling mode until the outdoor coil is thawed. then uncover vents and return to heat, or emergency heat. (this usually takes 15 min or less)

Frozen coils in AC mode with a heat pump?
Turn the system to heat with the thermostat on just high enough to get the system to come on. (again, usually takes 15 min or less to thaw.)

AC only, with frozen evap coils? (this can sometimes be seen frozen all the way outside to the compressor on the copper lines.)

Turn the system off, and the fan switch from "auto" to on".
This will usually defrost the coils within 1 to 2 hours.
(If your system has the furnace in line before the evap coil, turn the system to heat, and the furnace will defrost the coil within minutes.)



on Dec 25, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

I have a Cenco bcd 60 12/240v fridge/freezer. It runs but temp goes up and down. Exterior temp is constant at 20c. It will not reach -18 or stay frozen any minus temp setting. but runs fine if set...


It is my experience from what get from your description, it is one of two things. Low air flow in evaporator and/or low charge.
Low air flow can be caused by a few things. Things to check
1. evaporator fan is working
2. good air flow into and out of evaporator vents
3. Shelves are not over stuffed with product. Air has to circulate in order to freeze items properly and same for cooling in the fresh food section.
If these all check satisfactory, The next thing to check is the condenser coils for excessive air blockage and condensing fan working. A dirty condensing coil can cause everything you describe.
If these all check out ok, then and only then would I check the charge. The compressor discharge temperature during normal operation in most homes will have a surface temp aroung 140 degrees or higher. If the compressor discharge (high pressure) is not hot to touch, (careful if overcharged or dirty condenser the discharge pipe can cause burns.) then the unit is undercharged and needs refrigerant added. Also, if refrigerant is low, a leak search needs to be performed to locate potential leaks.
Hope this helps

Dec 10, 2014 | Refrigerators

1 Answer

Top freezer works but main frig does not


The way a refrigerator / freezer works is a single cooling coil in the freezer controlled with a thermostat. There is a fan that blows cold air down into the refrigerator section. There is another control that is just a vent control that changes the size of the opening for air flow. if the fan fails you don't get good cooling in the refrigerator section or if the defrost is not working correctly ice will build up and also stop the flow of air to the refrigerator. You should be able to hear the fan working inside the freezer. Replacing a fan motor is much simpler than troubleshooting an icing problem. There are several components that can cause defrost to not work. Bad temp cutoff switch, defrost timer or heater element could be causing that problem. With the unit unplugged and heater element disconnected you can use an ohm meter to measure resistance of the heater, should measure some resistance. Same with cutoff you should measure resistance when cold and none when above cutoff temp. Room temp is well above cutoff and use ice water to see if it closes.

Dec 13, 2013 | Frigidaire FRT21S6A Top Freezer...

1 Answer

My refrigerator is not working, but my freezer is


Usually there is a air flow problem from it not defrosting(all the evaporator coils are frosted up with moisture preventing air flow-defrost problem ) or the fan motor is not turning in the back of the freezer section above the evaporator....
All of the cooling in the top or refrigerator section is done by air flow circulating across the coils in the freezer to get temps down to 38 degrees or so. You have to listen for the fan running in the freezer section, feel for air at the top back of the refrigerator(the damper control) Sometimes a bi-metal thermostat in the defrost circuit is also used in series with the evaporator fan motor, if it is open the fan will not run........(this I have seen) Also check the vents for the return air to the freezer(behind the crispers are not covered accidentally) Hope this helps........

Jan 10, 2011 | Maytag MFD2560HES Bottom Freezer French...

1 Answer

Top refrigerator is not working, freezer is OK. When I unplug then plug it in again the indicator light for the refrigerator comes on but after a few minutes goes off, During the ime it is on there is a...


Your refrigerator gets its cold air from the freezer by way of a fan that transfers air past the freezer coils to the refrigerator. If the fan isn't working the refrigerator will not get cold. I your coils in the freezer are freezing up this will also stop the flow of air to the refrigerator. The first thing to check is the fan.

It definitely sounds like it has failed or is failing at least..


Thanks, let me know if you have any questions or concerns, just reply to my answer here and I will be right back with you.

Tim

Nov 06, 2010 | LG LRBN20510WW Bottom Freezer Refrigerator

1 Answer

My ge artica model number pss25ngma the refer part freezes evertyhing. I have adjusted the temp but it goes back to 32 waht can I do?


check the evaporator fan; listen to see if it is running check the baffles between the freezer and, the refrigerator box for air flow. Check the control knob to see if it is turning the cold control shaft. If these are not the problem: replace the cold control

Mar 17, 2010 | GE Profile Arctica Stainless Steel Top...

1 Answer

What would cause the inside top of a Magic Chef refrigerator model RBK21K-2A to freeze up and not keep items in the refrigerator compartment cold (temp doesn't drop below high 40s)?


lack of sufficient air flow across the evaporator coils, clogged condensate drain, too much humid air (door open too much, bad seals, etc.), low refrigerant.

Aug 07, 2009 | Magic Chef Refrigerators

1 Answer

The coils are frozen solid in freezer behind back wall


frozen coils not always means freon problem. low air flow across evaporator coils could cause freeze up. if door is opened and closed an abnormal amount could cause a freeze up or even something pushed up against the air intake in the refridgerator. i would thaw it out completely and restart it, theres a chance it was nothing major. good luck

Jan 12, 2009 | Hotpoint HTS20GCNWW / HTS20GCNCC Top...

1 Answer

Too cold in vegetable bins


Air flow ports adjusted correctly? Air flow fan running? I once had a bad temp sensor on the freezer coil that would not let the fan run.

May 29, 2008 | Amana ABB2227DE Bottom Freezer...

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