Compressor overheating is refrigeration’s most serious field problem. For evaporation to happen correctly, the refrigerant has to be pressurized so that it turns into a liquid. If it gets hotter than 350 degrees, the lubricating oil inside the compressor will start degrading. There are plenty of other reasons why your fridge may be working improperly or not at all. Auto Defrost System Not Working Properly Having a fridge or freezer with an auto-defrost feature is a nice thing to have. If your refrigerator is working properly, it should be cold inside and there should be warmth behind or underneath it. Is it Worth Replacing a Compressor on a Refrigerator? By creating an account you agree to the Hunker, HVACR News: Reasons Behind Compressor Overheating, Parker: Compressor Overheating Is the Number-One Refrigeration Problem. So, if the temperature of the discharge line is 225 degrees or less, you are in the safe temperature range. The cooling inside a refrigerator or freezer compartment is a result of the evaporation of a refrigerant inside a system of coils. The liquid will then evaporate as it passes through the tiny apertures that are in the coil system. Let it sit for a few hours and then pull it out to examine closer. The discharge line is generally located about 6 inches from the compressor itself. For this evaporation to happen, the refrigerant has to be pressurized in its liquid form so it will evaporate when it passes through a tiny aperture in the coil system. Not much air seems to be coming from the vents on the fridge side. How Do I Reset My Samsung TV If It Won’t Turn On? Most compressors work through reciprocating action. While it is definitely handy to have an appliance thermometer in your home, it isn’t necessarily something that you will find in most homes. The freezer, on the other hand, should be set to 0 degrees Fahrenheit. Condensers should be cleaned regularly to keep them operating at their rated capacity. If the condensation on the outside of the container disappears in short order, the water is very cold, and the temperature of the fridge is likely okay. Pull the refrigerator away from the wall and locate the compressor, which is usually near the floor. Should the temperature be higher than the outlined safe temperatures from above, the most likely cause is poor ventilation. It takes a certified refrigerant technician to handle these problems. A good way to do this is by putting a container of water in the fridge. If the refrigerator continues to run hot after you have tried these remedies, it's time to call a … And the freezer side is getting cold. Try to keep the fridge off of the wall for a while, letting it run normally. It's also possible the compressor is too dirty. Also the front trim piece between the freezer and fridge is getting hot as well. The safe range for this temperature is below 225 degrees. The compressor started up fine last night. A DIYer by nature, Deziel regularly shares tips and tricks for a better home and garden at Hunker.com. You try again. When the compressor goes bad, it can be a fairly expensive repair. If your fridge begins to work and your compressor isn’t overly hot, it was likely just the excessive dust causing the problem. Measuring the Temperature of the Discharge Line, Checking the Internal Temperature of the Compressor. Ryan also loves hockey and a lifelong Buffalo sports fan. When the compressor runs, you may hear a slight humming sound. The Safest Neighborhoods In San Francisco: 2020’s Ultimate List. Unplug the refrigerator, immediately place a thermometer on the tube and record the reading. That indicates a possible problem with the compressor, and if so, you'll probably notice the temperature inside the refrigerator going up. Will Food Spoil if the Refrigerator is at 50 Degrees or More? I understand your concern about the compressor. This is part of the process that takes the hot gas created by the compressor and turns it into the cool liquid that ultimately makes your refrigerator cold. The San Francisco area has long been a desirable place to live, frequently ranking high on lists of both the “Best Places to Live in California” and the “Best Places to Live.” The... What Does Your Refrigerator’s Compressor Do? Dust and debris interfere with air circulation and amplify the heat generated by the compressor. Nothing happens. These are not only far more accurate for measuring your fridge’s temperature, but they are pretty inexpensive as well. You will have roughly two hours to either cook it or return it to proper temperatures. ), link to The Safest Neighborhoods In San Francisco: 2020’s Ultimate List. Within the compressor is a piston that cycles continuously. Should the compressor’s temperature get to be more than 350 degrees, the lubricating oil that is inside of the compressor will begin a degradation process. (Find Out Now! A little from the upper vent. They can begin to taste or smell sour and should be discarded immediately. This is part of the process that takes the hot gas created by the compressor and turns it into the cool liquid that ultimately makes your refrigerator cold. It is completely normal for the temperature to get up to 300 degrees Fahrenheit, so don’t be alarmed if the temperature gets to be that high. It's difficult to measure the temperature inside the compressor, but you can get a fairly accurate idea by measuring the temperature of the discharge line about 6 inches away from the compressor. There are steps to identify these problems as they occur and, for the most part, can be remedied fairly easily. But the fridge side isn't getting cold. If the temperature rises to 320 degrees, the refrigerant will start to break down. A common cause of premature reciprocating compressor failure is overheating. You may even notice warmth coming from the compressor and that is totally normal. The main problems associated with compressor overheating are lack of lubrication in the compressor and degradation of the refrigerant. The refrigerator compressor fan is an indispensable part of the system; you probably know that whenever you have any electric or electronic machine that works on a processor, the fan is necessary to cool the system down and prevent problems such as overheating. The compressor needs to have a consistent supply of lubricant to keep it from overheating due to the constant motion. How it Works: If the refrigerator is not cold enough, the compressor might be defective. Unplug the refrigerator and remove dust with a vacuum, a rag or a compressed air blower. The other tub will hold vapor inside and it should feel cool to the touch. Sometimes, as the gas refrigerant moves through the compressor, the back of a fridge can get extremely hot. Compressor. That said, you need to be able to determine the temperature of your fridge in the event of a malfunction with any of the various components. However, the warmth shouldn't be excessive. Yes, the compressor can get very warm and on some older models, it can get hot. This causes the compressor's coils to contract, and the gas can become trapped. The discharge tube will be the warm one. Start by pulling the fridge away from the wall slightly to get a better look at the coil. Servicing the refrigeration system, including the compressor, requires a license, so it isn't something you can do yourself. The temperature of the tubing at this distance is typically 50 to 75 degrees lower than inside the compressor. Ideally, your fridge should be kept at a temperature that is at or below 40 degrees Fahrenheit. The compressor’s job is to not only create that pressure but maintain it as well. When the temperature gets to be 320 degrees or more, this is the point that the refrigerant starts to break down and lose effectiveness. He loves to blog about construction, plumbing, and other home topics. (Find Out Now!). How Do I Know if my Fridge is Cold Enough without a Thermometer? Should you prefer to get the internal temperature of the compressor itself, that isn’t all that hard to do but it won’t be as easy as checking the discharge line. And the compressor is very hot to the touch. If your fridge is of the basic variety, without all the bells and whistles on it, you might be better off just getting a new fridge as opposed to getting the compressor replaced. Evaporation is an endothermic process, which means it draws heat from the surroundings.
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