The inside display that shows the temperature does is not always on. The fridge seems to be cooling and the inside lights come on - but only sometimes does the temperature display show.
The temp control display panel began failing intermittently, but since the fridge maintained proper temp, we decided not to worry. Now, even though we can hear the fridge is on, the temp doesn't seem to be the proper coolness.
Also, periodically the 'door open' sound beeps - even when the door is definitely shut. Opening and reclosing the door stops the beep.
The freezer seems to be working properly - although there was one time a few weeks ago, where the freezer temp raised enough temporarily to make the ice melt slightly. We dumped the ice/water and it seemed to work just fine by the time the icemaker re-filled the tray.
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A fridge operates due to adiabatics, which is the ability of a gas to absorb energy by compression, which turns to heat, then dispel heat by evaporation. The little black tank is a compressor which compresses the gas in the condensation loop. When the gas is compressed it heats up, so the little back tank will get hot, as will the condensation grid, often at the back of the fridge, which acts like a radiator to cool down the gas inside. When the gas is evaporated into the evaporation loop, it expands again and any rise in temperature caused by the compression will be lost. Add to this loss in temperature caused by the radiator and you have a total net loss in temperature which is significantly cooler than what you started with.
The problem with your fridge has to start with the fan not working as this fan will help to cool the condenser radiator, unless it is a fan inside the unit itself which just distributes the cool air. (without knowing the make an model of the fridge I cannot determine the reason for the fan). Modern low energy fridges have a better and more economical set-up and it seems that your fridge has seen better days. The compressor is clearly working overtime to get so hot and particularly if it never seems to shut down or the fridge cool down. Sadly, I think it's time for a new fridge. You'll save the money you are currently spending on the electricity to run the old one.
Please get the thermostat switch/temperature control switch replaced by a Samsung technician. Also check the cooling gas. If it is less then no proper cooling will be done. This could be the possible cause.
OK we have either a main control board pe a temperature control board defective. Will need some one to unplug the refrigerator and on back examine the control board on both sides. Look for burn marks or signs of heat.
Like in this photo.
Art, I need to get a little more information from you. Does the condenser fan under the refrigerator seem to work and blowing warm air from below and or behind the refrigerator? The motor feeling warm is OK. Only when too hot to touch on top. Needs to cycle also. When you opened the freezer did you hear the fan blowing? Thanks, JT
Most likely it is the Main Control Board also called the Motherboard. It is located on the rear of the unit behind the smaller axcess panel. Becareful with the wiring if you attempt to change the board. There is a slight possibilty that it is the dispay board, but it is unlikely.