This should be within 10 percent of the motor rating. You're signed out. Modern refrigerators use solid state start relays, which can be identified by the two wires connecting to it. How can you test it? If the fridge does not work, the compressor might be defective. 275 to 300 degrees Fahrenheit is the high side of the temperature range, above that, the performance of the compressor will suffer because the temperature will be high enough to destroy lubricant properties. How to Replace Wall Switch to a Garage Door Opener, Mankato Refrigeration: Determining Compressor Failure, Victory Refrigeration: Basic Troubleshooting Guide, Daves Repair: Testing Refrigerator and Freezer Compressors, Troubleshooting a Doorbell That Doesn't Work, Troubleshooting a Dryer That Doesn't Turn On, How to Troubleshoot Refrigerators & Freezers. U se this chart to find out what is causing a problem with your refrigerator. Reply. Sometimes you can fix these issuesby replacing the compressor itself, like when a mechanical problem in the compressor causes low suction pressure. If the meter's LCD displays anything other than an “O.L.” during these tests, the compressor is bad and needs to be replaced. A refrigerator that won't run, even though the freezer works, means that the main component of the refrigerator, called the compressor, is working. The refrigerator compressor compresses the refrigerant, turning it into liquid and causing it to heat up. Connect the refrigeration hose to the service port of the compressor. Since there is no easy way for you to check the solid state starting relay without substituting a new one, check the thermostatic control switch. When troubleshooting a compressor of a refrigeration system, there are really only 6 simple steps to follow. Follow links from the possible causes to articles on how to verify the cause and how to repair the problem. Use a sturdy container to press and hold the water dispenser pad for 5 seconds, then release it for … Injection stretch blow molding process has two main different methods, a single-stage and two-stage process; these are the methods by which hollow plastic parts are formed. Plug in the fridge and make sure the fan runs when the compressor is running. If the thermostatic switch checks out good, replace the solid state motor starting relay. Therefore, if your fridge or freezer compressor is hot to the touch, it's important to troubleshoot the issue right away, either on your own or with the help of a professional. Be thorough, and document each measurement, because you often need the results of multiple steps to draw conclusions about the source of issues with the system’s performance. If there is a noise, is it coming from inside the freezer, behind the refrigerator, or somewhere else? KB Delta offers a full line of valve repair kits for all the major reciprocating compressor manufacturers. You can read one pressure at a time using a single pressure vacuum module. You will be using the ohms function on you digital multimeter to troubleshoot the compressor, and having power applied to the circuit under test gives false readings and damages the meter. If the motor windings test out good, the problem is either a bad motor starting relay or a bad thermostatic control switch. Look up the symptom and then review some of the possible causes. Find the panel on the side of the compressor; it’s held by one or two screws. If these readings are significantly different, the winding with the significantly lower reading has a turn-to-turn short and the compressor needs to be replaced. One of the best indications that there is something wrong with the compressor is that the fridge is not cool enough, or that some areas of the fridge are less cool than they used to be. Though refrigerators generally operate very dependably, they can break down, and, when they do, the food inside can spoil in a hurry. Make sure to pull the fridge out once in awhile and give the coils a thorough cleaning with a damp cloth and dish soap. With the help of another person, you can pull the refrigerator safely away from the wall and try to listen for this clicking noise. If the condenser fan runs, then your compressor should be getting power because the compressor shares a circuit with the condenser fan motor on most refrigerators. Pull out the refrigerator if needed and press the plug firmly into the outlet. Before removing it from the system, make sure to unplug the unit first. Make sure you check line voltage at the load center with the compressor off, as well as voltage at the motor terminals with the compressor running. How to troubleshoot a refrigerator compressor that is overheating. This is key to understanding how to fix those problems. This part is located in either a white or black box near the compressor at the back of the refrigerator. Checking for failures in the compressor’s electric motor helps, especially if the system is accessible enough to allow for compressor repair without full compressor replacement. Since the job of the compressor is to move supercooled refrigerant from the evaporator to the condenser, checking for pressure problems is essential when diagnosing issues with the system’s operation. A dirty refrigerator compressor or condenser coils are common causes of poor fridge performance. Any exposed wire, kinks or cuts in the cord might make the appliance malfunction. Use the pipe clamp accessory on your DMM to get a measurement. Troubleshooting Index Page. What Does a CE Code Mean on a Whirlpool Calypso Washing Machine? Based in Colorado Springs, Colo., Jerry Walch has been writing articles for the DIY market since 1974. This is a safety recommendation which must be followed when you are working with parts or equipment driven by electricity. If your refrigerator stops working and food goes bad, you could lose all the money you've spent on your groceries. You … The core of any refrigeration system is the compressor, and most of the troubleshooting that needs to be done when a system doesn’t work correctly boils down to this one piece of equipment. Keeping compressor … Use a clamp meter to check both AC voltage and AC current. Shake the start relay to see if it rattles. Open up the service port and read the refrigerant pressure directly on the module. Your fridge draws a respectable amount of current, and no maintenance should be performed on your unit … Tap to unmute. You can troubleshoot with a multimeter, also known as a multitester, as most such problems are electrical. November 13, 2020 at 1:55 am The compressor and fan compressor … Using standard refrigeration gauges is the easiest method, but you can also get a measurement using a digital multimeter and pressure module if you don’t have access to standard refrigeration gauges at the time of troubleshooting. By replacing a compressor without checking for and fixing these issues, system failure will reoccur with the same basic symptoms. If either side displays an “O.L.,” the thermostatic control is bad and needs to be replaced. plastic bottle manufacturing industry. Contact LG , they should have 10 years warranty for the compressor . Oil trapping in the system. Call in the experts. Whether you’re an expert certified in HVAC systems or a DIY die-hard looking to repair a compressor system, the essential steps are the same. Is there frost forming anywhere out of the ordinary? Disconnect the refrigerator As you are going to work in the rear part, for your protection, the appliance should not be energized. If you purchase an appliance from this brand, you are likely to enjoy a long period of usable life. The refrigerant loses heat through the condenser coils on the back of the unit, and then pumps the refrigerant through an expansion chamber — where it quickly vaporizes and chills, making the refrigerator cold. Insufficient oil in the system. The process of troubleshooting a compressor will reveal which aspects of the compressor’s operation are compromised. Since new refrigerator compressors are purposely meant to run for 80-90% of their life, it’s hard to tell when a compressor is being overworked just by listening to the sounds of your fridge. Adjust the thermostat settings to the optimal temperature. Move the refrigerator away from the wall and unplug its power cord from the wall receptacle. Refrigerator Troubleshooting Guide. Problems with your compressor may cause the fridge to shut down. We manufacture our own springs and stock over 2 million springs for a variety of OEM spring styles, forms and materials. Fortunately, the compressor itself is seldom the problem when a refrigerator fails to operate properly. It is not hard, but you need to unplug the fridge and access it from the back. Our specialized precision tooling and proprietary lapping process gives our customers the highest quality thermoplastic plates and rings in the industry. Using the pressure module on your DMM, do the following: The compressor should pull around 15 inches of Hg. Locate the compressor's start relay and pull it off the terminals on the side of the compressor. KB Delta offers one of the most complete lines of valve internals in the industry. Rule out these issues as when replacing or troubleshooting a compressor. You’ll see a device called a starter relay switch, which you should unplug from the compressor. 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