how to troubleshoot a refrigerator compressor

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. Refrigerator Repair -DIY Refrigerator Troubleshooting and Repair-If you don't know what's wrong with your refrigerator, how can you expect to fix your refrigerator? Keep in mind that the system will likely be under high pressure when setting and removing your gauges, and use safe refrigerant handling protocols to keep the system from losing refrigerant. Those factors will help you determine the extent of the compressor’s performance shortcomings, which also helps to confirm or eliminate hypotheses about the issue. Testing the compressor motor will give you a hint about what is happening. This should be within 10 percent of the motor rating. Shake the start relay to see if it rattles. Make sure to pull the fridge out once in awhile and give the coils a thorough cleaning with a damp cloth and dish soap. That said, fridges are generally noisy things anyway. You're signed out. 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. You will need to record the suction or discharge pressure one at a time. Is the freezer cold enough, but the fresh food compartment warming? We manufacture our own springs and stock over 2 million springs for a variety of OEM spring styles, forms and materials. Grab a flathead screwdriver, pull your fridge away from the wall, and unplug it. You’ll see a device called a starter relay switch, which you should unplug from the compressor. In addition to pressure, temperature measurements help you get a good idea what is going on inside of an air compressor. Sometimes mechanical problems are the core issue when compressors fail to function properly, but more often there are refrigerant system problems contributing to the issue in ways that cause the mechanical failure. Use a screwdriver to remove the small access panel on the back and look for the compressor inside your fridge, which will be a large black cylinder on either side of the machine. Do not attempt to replace a defective compressor yourself. Walch spent 40 years working in the electrical trades and holds an Associate of Applied Science in applied electrical engineering technology from Alvin Junior College. If the meter's LCD displays anything other than an “O.L.” during these tests, the compressor is bad and needs to be replaced. Learn to test the start relay of the compressor: 1. There’s a lot going on inside them to keep them cold and insulated, particularly if you’ve … However, it’s worth trying to identify the source of the noisebefore trying to cover it up. Video explaining how to test the compressor if you have a refrigerator that is not getting cold. To avoid an expensive service call, Costas suggested we first try pulling the fridge away from the wall, unplugging it and removing the service panel for about 20 minutes to allow enough time for the compressor to cool and any onboard computers to reset. A refrigerator that won't run, even though the freezer works, means that the main component of the refrigerator, called the compressor, is working. Use the pipe clamp accessory on your DMM to get a measurement. Eugene Smith. If the compressor checks out electrically but still does not start and run normally, the compressor may be seized up, or have bad bearings or valves. If the meter LCD displays an “O.L.” when checking between any two of the pins, the compressor is bad and needs to be replaced. Set the switch between 4 and 5, and check for continuity between the plug and the wires attached to the start relay. Also, don’t forget to remove the power supply from the outlet beforehand. His work has appeared in “Family Handyman” magazine, “Popular Science,” "Popular Mechanics," “Handy” and other publications. KB Delta offers a full line of valve repair kits for all the major reciprocating compressor manufacturers. Check Click on underlined items for further information. Use the following method when testing the hermetic and semi-hermetic pressures of compressors. Established centers of this industry include the United States and Western Europe. The meter's LCD should display a “0.000” reading between each side of the plug and one of the wires attached to the start relay. Simply remove the guard cover from at … Check that the power cord is plugged in all the way. Line voltage that is too high will lead to premature failure, and too low will result in more performance issues. After all, this noise might be an indication of something being loose or broken. Another vital data point in your troubleshooting diagnosis is the temperature of the space needing refrigeration. GE refrigerators are known for their quality and reliability. Finding ways to make your refrigerator quieter is understandable, as it can be very annoying when you’re just trying to relax at home. Is there frost forming anywhere out of the ordinary? Problems with your compressor may cause the fridge to shut down. Symptom. If the fan doesn’t run, see the directions below, which show how to replace it. KB Delta offers one of the most complete lines of valve internals in the industry. Reply. Start by unplugging your fridge and pulling it away from the wall so you can access the back. When we plugged it … If the pressure displays around 10 or less, that means the discharge valves are likely leaking need replacements. 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. Though refrigerators generally operate very dependably, they can break down, and, when they do, the food inside can spoil in a hurry. Two types of shorts can occur in a compressor motor, a turn-to-turn short within a winding or a winding-to-frame short. I’m not having much luck on finding troubleshooting tips. When the root of the problems are system design, though, the compressor replacement will necessitate changing some elements of the system’s function to get better long-term results. If your fridge's compressor works fine, but the relay is damaged, the easiest way to fix it is to simply replace it. Reply. Oil trapping in the system. Reciprocating Compressor/Natural Gas Industry ©.Privacy PolicyKB Delta, Mfg, compressor repair without full compressor replacement. 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. Use a clamp meter to check both AC voltage and AC current. The processing and refining of Natural Gas into a marketable products, by separating gas into pipeline-quality natural gas and a stream of mixed natural gas liquids and the transportation of natural gas to through a series of reciprocating compressor stations and pipes, and from there to end users. Plug in the fridge and make sure the fan runs when the compressor is running. However, since most compressors have a … 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. Tap to unmute. If the pins are not marked, set the digital meter's function switch to the R x 1 scale, and locate the two pins that give the highest reading; these pins are the run and start winding pins, and the remaining pin is the common pin. Find the panel on the side of the compressor; it’s held by one or two screws. Make sure you also check the running current and compare it to the manufacturer’s safe maximum amps. Although the steps are the same, the scale of the operation and the possible consequences of overlooking a step in the process may differ between compressors. Luckily, it is fairly easy to troubleshoot your GE refrigerator and determine how best to repair it. The medical technology industry is an important part of the healthcare sector. If your refrigerator stops working and food goes bad, you could lose all the money you've spent on your groceries. How can you test it? 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. plastic bottle manufacturing industry. 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. For safety, unplug the refrigerator. Pull it away from the wall or otherwise give yourself room to reach the compressor on the back. The process of troubleshooting a compressor will reveal which aspects of the compressor’s operation are compromised. However, things can go wrong with any appliance, regardless of the manufacturer. KB Delta specializes in manufacturing compressor valve parts for high pressure air compressors used in the P.E.T. When you apply a methodical approach to troubleshooting a compressor, it helps eliminate opportunities to overlook the cause of the problem by ensuring that every aspect of the compressor’s operation is reviewed for issues. 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. Compressor - Loss of oil, Loss of oil pressure, or Cuts off on oil pressure control. Before removing it from the system, make sure to unplug the unit first. How to troubleshoot a refrigerator compressor that is overheating. 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. 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. Check the Compressor Windings for an Open Winding Move the refrigerator away from the wall and unplug its power cord from the wall receptacle. What Does a CE Code Mean on a Whirlpool Calypso Washing Machine? A compressor is the heart of a refrigerator unit which is responsible for refrigeration cycle. It is running but not pumping freon in the system. Compressor short cycling. If either side displays an “O.L.,” the thermostatic control is bad and needs to be replaced. Modern refrigerators use solid state start relays, which can be identified by the two wires connecting to it. Valve Seat and Seat Ring Basics: What to Know, The Business Benefits of Green Manufacturing, Types of Bearings in Reciprocating Compressors, and Their Importance, Connect the module at the suction line service port, Close the compressor on the low side of the system by front seating the suction service valve, Let it run for at least two minutes, but not more than three, Turn off the compressor and take the reading, Poor piping practices preventing oil from properly returning to the compressor while running, High discharge temperatures creating acids that can damage the system, Insufficient air flow to either the condenser or evaporator coil. Refrigerator Troubleshooting Guide. The relay is located at the rear bottom of the fridge. This expert refrigerator troubleshooting and repair advice includes how to fix refrigerator problems such as poor cooling, refrigerator noises, and unwanted freezing of foods. Clean the fan blades and spin the fan by hand to see if it’s stuck. Pull out the refrigerator if needed and press the plug firmly into the outlet. The refrigerator compressor compresses the refrigerant, turning it into liquid and causing it to heat up. As a rule, the problem lies with a much less expensive and more easily replaced part, such as a start relay or thermostatic switch. KB Delta manufactures and stocks a complete range of metallic compressor valve plates and rings for the natural gas, refrigeration and P.E.T. On GE refrigerators, for example, the inverter will try to start the compressor 12 consecutive times. By replacing a compressor without checking for and fixing these issues, system failure will reoccur with the same basic symptoms. Troubleshooting Index Page. Based in Colorado Springs, Colo., Jerry Walch has been writing articles for the DIY market since 1974. All of our parts are manufactured to OEM Standards in performance and efficiency. Move the refrigerator away from the wall and unplug its power cord from the wall receptacle. Call in the experts. If the thermostatic switch checks out good, replace the solid state motor starting relay. © Copyright 2020 Hearst Communications, Inc. Contact LG , they should have 10 years warranty for the compressor . 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. When troubleshooting a compressor of a refrigeration system, there are really only 6 simple steps to follow. The compressor is a motor which compresses the refrigerant or coolant and circulates the refrigerant through the evaporator and condenser coils. 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. What’s the Process of a Great Spring Design? Been writing articles for the compressor is a motor which compresses the refrigerant or coolant circulates... 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