Freezer keeps loosing its temperature and then freezes again
The freezer section is playing up. One minute it is working OK and feels cold and then 12 hours later it begins to defrost and the ice in the ice cube tray turns to water. At the same time the freezer temperature begins to flash and I have also noticed that condensation forms on the glass shelves in the refrigerator section (although the refrigerator seems to be at the correct temperature). After a few hours the freezer will once more freeze and this pattern seems to cycle every day or so. The important thing is that the freezer temperature is too inconsistent to store frozen foods (it is empty at the moment).
One thing I noticed also was during a period of freezing it would reach the prescribed temperature (in this case -20). If the unit was then switched off for a few seconds and then back on again it would display a completely different and warmer temperature (maybe by 8 degrees or so)
I have taken off panels and checked that all the fans are working and that nothing is frozen up. Everything seems to be very clean and functioning.
Re: Freezer keeps loosing its temperature and then...
Sounds like a pc board problem. I have come across many units like these (although I don't know the Samsungs!) which have similar symptoms...it would seem like the freezer gets stuck in "defrost" mode and the ice would melt etc.etc....
In most cases replacing the electronics module solved the problem...in hindsight I have figured out that it was moisture on the pc board components that were to blame!
So as a first resort I would locate the main electronics board and use a hairdryer to dry out thouroughly (even if it seems dry!)
Also check values for temperature sensors....don't know what the specific values for the Samsung NTC's are, but normally they are in the low kOhm's....
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You probably have one compressor that cools the freezer section and the refrigerator section. Usually the freezer gets cooled directly with the cooling coils. A fan blows cool air to the refrigerator section. The air flow to the refrigerator may be modulated with some time of "air door". What you have written says to me, is that the fans and air doors are working but there is enough cold for the refrigerator but not enough for the freezer.
Here is what I would do:
Put a thermometer in the refrigerator and in the freezer.
Be sure the coils underneath or behind the refrigerator are clean. If they are very dirty, clean them.
Keep the doors shut for at least 12 hours and then read the thermometers and write down the temperatures.
If the freezer has started freezing again, you fixed it by cleaning the coils
.If the freezer temperature is between 0 deg F and 32 deg F, consider putting the food in a cooler and packing in some dry ice to try and save it.
If the freezer is warmer than 32 deg f, throw away the food.
Doctors and hospitals are pretty expensive. I would throw away the food no matter what the thermometer read.
Look inside the freezer at the cooling coils. See if they are ice coated or not.
If the freezer is above 0 deg F, and the coils are ice covered, the defrost control is not working. Unplug the refrigerator for 12 hours and let the ice melt. (Keep the doors shut.) Then, plug in the refrigerator for 12 hours and check the temperature like in step 3.
If the freezer is above 0 deg F, and the coils are NOT ice covered, the compressor is not working.
Call the service technician. When she comes out show her the temperatures and tell her what you found out about the ice on the coils.
Sounds like the cold control has stuck . Unplug the two wires from the cold control and plug them together. Turn one wire over and plug it into the other. away from the cold control.
If it runs then that cold control is the problem.
Is it just the freezer section? Open the freezer door for a minute and then, without shutting it, press the button on the inside that makes the light go out. The fan at the back at the top of the freezer should start whirring. This circulates the freezing air. If it doesn't start then that's your problem as the freezing air isn't getting to the top of the freezer. It's simple enough to replace. Buy a new part (30 pounds?) and replace from the inside by removing the back panels to the freezer. Turn the freezer off and unplug first though, obviously! Hope this helps.
Many residential refrigerator / freezers are designed to work at temperature considerably above above freezing. Most modern refrigerator / freezer have a single electric thermostat - located in the fresh food compartment. This lone thermostat will control the compressor to keep the fridge (fresh food) section at the desired temperature (usually between 34 - 38 degrees F). The freezer will get colder regardless of how cold it is already whenever the fridge thermostat turns the compressor on.
Now that you see how the thermostat works, let's look at what happens when the fridge is placed in an unheated space - like a garage. In winter time, the temperature can drop considerably below 38 degrees. If the outdoor temperature remains cold enough, for long enough - it will affect the thermostat in the fridge. The temperature inside the fridge could drop below 38 degrees, preventing the thermostat from telling the compressor to turn on. Meanwhile, the temperature in the freezer compartment slowly rises from the normal -10 to 0 F degrees. It will continue to rise until it is the same temperature as the fresh food compartment or until the thermostat in the fresh food compartment tells the compressor to turn on again. This means the freezer contents will thaw.
If the temperature in the garage is even in the 40 to 50 degree range, the loss of cold in the fridge may not happen often enough to keep the compressor coming on often enough to keep some freezer items frozen solid - such as ice cream. Remember, water freezes at 32 degrees F, other products may require lower temperatures to remain frozen, and could thaw at 28 or other temperature.
The refrigerator side is at present working properly , but slowly slowly, it will also loose its cooling.This will happen because, freezer side is the side which cools first, then the refrigerator side ( also called as fridge side)., gets cooled.If freezer side is not cooling / freezing properly then fridge side will also loose its cooling ability.------------
And later on both section will loose its cooling.-----------
As per the present situation, it indicates problem with compressor or problem with freezer side door not closing properly.---------- Or the temperature in freezer section is not set to proper cooling/ freezing.--------- So first inspect temperature, is it set right? If ok, then check the freezer door , is it properly closed? If ok, then its compressor problem.? The compressor is running non stop, this is indication of compressor problem.----------
Click this link below for more help:---
Later on both section will loose its cooling.
This will help.Thanks.Helpmech.
The temperature is not set to high cooling.First check the temperature setting.But if temperature is set right and still the ice cream is not cooling then .Problem relates to weak compressor.
problem is weak compressor.The refrigerant ( R12) in the compressor is got
low.The compressor is weak.The compressor needs to be replaced.--------------The working procedure of
this unit is as follows: --- The compressor starts then it cools the freezer
section. When the freezer reaches its cooling level the defrost cycle starts
functioning. In this cycle the fan in the freezer section starts running and
the cool air in the freezer section is passed to the fridge section and the
fridge section gets cold. The air from freezer to refrigerator passes from the
section, in that section the damper is located.------------But as you mentioned that ice cream is not freezing, so that means freezer is not freezing to its required temperature.------- This indicates problem with compressor.When compressor cools the
freezer section then fridge section gets cold.If freezer section is not getting
properly cold then fridge section will not cool properly/.So the problem
relates to compressor.---------- In the compressor there is a refrigerant
called FREON.With the help of this Freon the compressor cools the freezer
section.Freon is a gaseous type cooling agent.The compressor will stop cooling
when coolant gets leaked from its chamber.---------Again recharging the
Freon is possible, but the cost for that recharging is approx the cost of new
compressor.So its always advisable to get compressor replaced.Because new
compressor has warranty for few years.------------------You can get required
parts from from online sites like: --- www.repairclinic.com or from
searspartsdirect online site. --------- This should help.Thanks.Helpmech.
You should be able hear, and feel the air from, a running fan inside the cabinet, in either side.
The common arrangement is having the coils located (behind the wall) in the freezer section and then the fan moves a controlled amount of the frigid air to the refrigerator section via openings located in the rear of the compartment. The vents are normally adjustable so the temperature can be balanced between the two compartments.
If there is no noticeable air coming from this vent, then the fan has died.