Test the continuity of the refrigerator's various components. Also, if the compressor uses a capacitor, it must be discharged first to avoid the risk of electrical shock. The reading obtained between the Run and Common and the Start and Frequent hooks must be included. In this way the compressor not explode properly and work badly. Before testing a compressor relay, unplug the refrigerator to avoid an electrical shock hazard. The refrigerator overload protector testing is very easy using a multi meter, to test your refrigerator thermal overload protector follows the below steps. When a compressor is bad, the repairs can cost more than what a new appliance would. In other words, a test by the tester is carried out to examine the winding, in order to detect its damage. 5. Since the compressor is a very important part in the refrigeration system, it needs to have a working refrigerator start relay in order to work. If your fridge compressor runs but will not cool your food, the culprit often turns out to be the fans- either in the evaporator or the condenser- or the evaporator coils. The start relay is usually mounted to the compressor; it helps kickstart the compressor during the cooling cycle. It specifically produces a clicking noise whenever it tells the compressor to start working. There is a temperature sensor in the refrigerator’s chamber, as soon as the temperature in the chamber begins to rise, it sends a signal to the relay… Attach the start relay to the compressor at the same point, replace the back panel, and plug the refrigerator back in. If you shake the relay but there is no rattle, chances are fairly good that the relay is good, but your compressor is bad. The cable is used to bring the start winding in the circuit before the compressor reaches running speed. Luckily, you can easily check the start relay and replace it or you can bypass the refrigerator’s relay system. Here’s the thing though: That clicking noise will still pop up even if the relay system is busted. Use an ohmmeter set on the lowest scale to check the relay from the two terminals on the front of the case. Then start looking for the starter relay switch. It tells the compressor when to turn on/off, depending on the need for cool air inside the refrigerator unit. You have to unplug the part from the compressor. The cover is held on by tension or with a retaining clip. Remove it and give it a shake. This step goes without saying, however as the compressor lies deep in the back panel of the refrigerator. If your fridge cannot start there is a high probability that the PTC relay is defective. A start relay is an electrical switch which tells the compressor when to turn on or off depending on the requirement of cool air inside the unit. Another fundamental and simple check is related to the state of the main and auxiliary coils of the compressor. 4. If the fans are running and your compressor won’t start or if you hear a clicking sound from the unit, check the overload relay for signs of overheating or arcing. Faulty start relay (less likely) If the relay is bad, signals from the thermostat won’t get to the compressor and fan. Use a flathead screwdriver to remove the one or two screws that are holding the panel on. A refrigerator that makes a buzzing or humming sound but doesn’t keep the food cold may have: A blown compressor (big bucks); Or just a bad overload or compressor relay (much cheaper). If the start relay is faulty, you may hear clicking as the compressor turns on and off intermittently. After checking the 3 windings combination, you should also check each terminal to chasis. It’s normally big and cylindrical and in the rear of the fridge. First of all off the refrigerator and plug out the refrigerator supply plug from the outlet, or switch off the double pole circuit breaker from which the refrigerator supply plug controlled. If it does not stop the clicking sound, there’s one more thing you can check: The condenser fan. The compressor turns on and off periodically for an effective cooling process, and for this very reason, a relay is used to assist the compressor while functioning. Now, in case the relay fails or burns out, the compressor may fail to kick in, meaning the interior of the cabinet will fail to freeze. Refrigerator compressor clicks on and off. It means the compressor has a start relay problem. How to test a refrigerator’s overload or relay-start capacitor with a multi-meter: Begin by ensuring you have unplugged your refrigerator, and then remove the rear panel. Unplug the refrigerator. If the compressor is clicking on and off, or worse, not running at all, check the start relay. Therefore, knowing how to check the compressor relay of a refrigerator, you can easily repair the device yourself. You Have To Shake The Switch. If the refrigerator start relay is burned out, then the compressor may not work and the interior will not freeze. In the first two checks, if there is no continuity, it is necessary to change the relay. Now, it will act as an indicator of if the compressor indeed requires a replacement. The solid state relays can be easily tested by removing it from the compressor and shaking it. Masters call it a ringing. The compressor relay can be accessed by removing the terminal cover box. Here’s a bunch of other refrigerator repair tips. Continued from page 1. For those with the guts and determination, here is how to test your refrigerator's compressor relay.Before working on your refrigerator, always unplug the unit or turn off the circuit breaker that powers it.Locate the compressor. Enter the multi-test with a probe on each two terminals s and m. Set or try to zero ohms. Beneath the terminal cover is found the compressor relay (labeled "A" below), overload protector (labeled "B") and the electrical terminals of the compressor motor. Hold the relay in your hand, and give it a bit of a shake. Find the panel on the side of the compressor. Return or release and after a sound click, the playback must change infinitely if the relay works. Step 2; Find the compressor. Magic chef start relay refrigerator dehumidier compressor ptc 68 magic chef lg p6r8mc 1d. When the refrigerator compressor is on and off and not run properly. There will be primary lines that are represented by L1, L2, L3, etc. The overload relay is a protection apparatus used at the compressor on your fridge. Step by step instructions on how to replace a Compressor Start Relay for LG LFX25971ST Won't start #AP5949339 for Refrigerator made by Kenmore, LG. Refrigerator relay wiring diagram new embraco relay wiring diagram. This will require using a multimeter on several of the refrigerator's components. A refrigerator start relay is a device that jump-starts the compressor inside the refrigerator. Locate the compressor's start relay and pull it off the terminals on the side of the compressor. PTC - Compressor starter - Positive Temperature Co-efficient Hey, simplicity works but it has its limits The most cheapest compressor starting device, and can I say it is not a relay , more a resistive switch. How do you check the compressor relay on a refrigerator? Before seeking expert help, consider following our guide so you can make your own assessment find out whether your refrigerator compressor is broken. Step 1: Unplug the refrigerator. Here we show you how to test you relay on the compressor and for a short in the compressor when the compressor won't come on … It will be the size and shape of a small ink cartridge you would use in an at-home printer. 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