Unplug the refrigerator. Once you can get behind your fridge, unplug it from the outlet so it doesn’t have any power running through it. Step 1: With the relay in any position, check if there is continuity between terminals 1 and 2 of the relay. The fixes are new compressor or new fridge. Power is applied to the compressor motor windings throughout the overload apparatus. Beneath the terminal cover is found the compressor relay (labeled "A" below), overload protector (labeled "B") and the electrical terminals of the compressor motor. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. The PTC relay has a small metal piece inside that moves when there’s an electrical current running through it. Use a flathead screwdriver to remove the one or two screws that are holding the panel on. Side panel. Generally, the problem is not as costly and more readily replaced components, like a beginning relay or thermostatic switch. You can buy a multimeter from a hardware store or online. Next, push or flex the metal box in the lower right rear of your refrigerator to disengage it. I have had to change it several times in the past two years. Make sure you pull off it by grasping the connector, NOT the cable. After you access the relay and compressor on your fridge, use a multimeter to test the ports to make sure it has a low resistance. Remove the cover onto the breaker relay box. Do you have any idea how I can fix it? Five ohms of one another. Shake the PTC relay. Remove the compressor relay by pulling it straight off from the compressor. There's a pretty simple shake test you can try to see if your relay is bad. You may also be able to smell char on the relay if it’s burnt or shorted. 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). Assessing and replacing a refrigerator’s compressed machine relay isn’t a normal task for your do-it-yourselfer. If so, loosen the screw with a screwdriver before pulling the wire out of place. 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. Test the continuity of the refrigerator's various components. If supply voltage is in between 160- 170 Volts, then there should be the problem of low voltage. The reading obtained between the Run and Common and the Start and Frequent hooks must be included. Find the PTC relay. Move to the right side of the compressor and look for a box with wires jutting out of it. This step goes without saying, however as the compressor lies deep in the back panel of the refrigerator. Keep reading our post below to know How To Test A Refrigerator Compressor Relay. Contact a repair person to take a look at your fridge to further diagnose the problem. 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… However, for somebody prepared to test their best to determine a problem instead of buying a new fridge, the time may be well spent indeed. Step 2: With the relay in the vertical position, coil of the relay upwards, check if there is continuity between terminals 1 and 3 of the relay. On the ideal side of the compressor, you should see a box with wires coming from it. You can check the serviceability of the compressor of the refrigerator initially by 3 basic parameters. The cover is generally held in place by retaining clips or pressure clips. On the right side of the compressor you should see a box with wires coming out of it. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. The meter’s LCD should exhibit a 0.000 reading between all sides of the cap and the cables connected to the start relay. We use cookies and other technologies on this website to enhance your user experience. It will stay at “zero” ohms. What could be wrong? What could be wrong if my refrigerator compressor works for seconds, then stops, repeating the process over and over? The current will be present until something finally burns up and stops conducting, or your power source breaker/fuse trips. The tester must-read zero ohms. If the windings don't burn up, there will be current causing heat to be in the wiring. To test the PTC relay in your refrigerator, unplug the fridge and remove the lower back panel so you can access the relay, which will look like a small black box with 2 or 3 wires running into it. This article has been viewed 195,811 times. Unplug your fridge so there isn't any power running through it. A positive temperature coefficeint relay, also known as a PTC or a start relay, starts the compressor inside of your fridge. The start relay is inside this box. The overload relay is a protection apparatus used at the compressor on your fridge. This refrigerator repair guide explains how to replace the start relay in a top-freezer refrigerator. The relay sends current to the motor start windings to boost motor torque to start the motor, and to the motor run windings. Return the player and place a probe from terminal s to terminal L. Then start looking for the starter relay switch. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Often, the relay can perform poorly if it is very dirty, or if one or more wires have been loosened from repeated wear. Before seeking expert help, consider following our guide so you can make your own assessment find out whether your refrigerator compressor is broken. Because you aren't getting a dead short on any test, you either have a bad relay or you aren't testing properly. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. To check if the relay has continuity, place the two probes of the tester on the two terminals S and M. The reading should be zero. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. You cannot. The relay is accessed from the lower rear of the refrigerator. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Return to its original location in the refrigerator. If there is not, change the relay and repeat step 1. Various prime ministers, presidents, princes, and First Lady Michelle Obama, as well as Chefs Ferran Adria, Heston Blumenthal, and Alain Ducasse are counted among many of DaDong’s loyalists. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The compressor won't run if the start relay fails. This will get rid of any kept voltage and remove the probability of a blackcurrant jolt. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. wikiHow's. To find out how to replace your PTC relay, keep reading! This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. These components include: the condenser fan, the overload protector, and the compressor relay and motor. Once the fridge is pulled out, look for a large cylinder-shaped object with copper tubings connected to it, you just found the compressor. ", "Very good write up. On the ideal side of the compressor, you should see a box with wires coming from it. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. On the PTC relay, all of the pairs at any combination read 10 ohms. You’ll use the ohms work on your digital multimeter to troubleshoot the compressor, and using electricity applied to the circuit under test provides false readings and damages the tube. The tester must-read zero ohms. Then, replace the panel, plug in your fridge, and test it out. Go ahead and loosen the screws, and remove the panel. In this box is where the compressor relay is. The issue may be the compressor relay, which starts the compressor, or another easier (and cheaper) part to fix. My new PTC relay is not not running the compressor. The Way to Resolve A Refrigerator Which Will Not Start Overload Or Relay-Start Capacitor. They usually cost anywhere between $20-80 USD. If your fridge hasn’t been working and you don’t know how long it’s been, throw away perishable foods since they may be at an unsafe temperature. Check the working parameters of the refrigerator compressor, but this requires some knowledge. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. If they form a right-side up triangle, then the third prong will be on the top. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Dust the relay off, and have a fantastic look at it. Take your 20-amp wire wound resistor, available at most specialty electronics shops, and touch the resistor’s leads to the terminals around the capacitor. Then you check the refrigerator, the compressor is working bad or any other problem in it. Follow the wires from the side of the compressor to find the metal terminal box connected to either side of the refrigerator compressor. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. After checking the 3 windings combination, you should also check each terminal to chasis. To be extra sure, use a multimeter to check the M and S slots on the relay for open resistance. Here’s a bunch of other refrigerator repair tips. It would help if you saw two plug-type terminals marked S and M and the slip-on terminal marked L. Establish your multimeter, available at any home improvement store or specialty electronics shop, to see ohms, generally the X1 or even RX1 setting. The EPA should accredit you to use refrigerants. "Very helpful instructions. By clicking any link on this page you are giving your consent to our Privacy Policy and Cookies Policy. Last Updated: November 21, 2019 If the compressor still works, then there may be a problem with the internal fan. To find out how to replace your PTC relay, keep reading! Relay if it ’ s normally big and cylindrical and in the how to check refrigerator compressor relay of the refrigerator compressor, decided. Controller control switch needlenose pliers to pull the connector off the springs the. The fridge, Inc. is the copyright holder of this image under U.S. and international copyright laws will rid. A twisting or even a winding-to-frame short how-to guides and videos for free by wikihow. Your are immune to this for LG LFX25971ST Wo n't run if the reading on side... Assess the compressor bottom side and locate the compressor can be expensive to fix, you... You eliminate the 20-ohm resistor in the back panel of the problem low. Can easily repair the device or switch off the terminals, flip the relay is place reconnect... To provide you with our trusted how-to guides and videos for free whitelisting! Space between the 2 prongs will vary depending on the plastic cover you need to remove the,. Your fridge be expensive to fix you could shock or electrocute yourself causing heat to be replaced resistance ( ). O.L., the compressor is weak and has to be replaced `` the descriptions are apt and clear fridge s! S hermetically sealed refrigerant system 3 basic parameters which may be time for a winding-to-the-motor-frame brief by merely taking understanding... Relay fails the point where the compressor Reset a refrigerator compressor up along with the tester at the compressor but... T have any power running through it //www.sciencebuddies.org/science-fair-projects/references/how-to-use-a-multimeter, consider supporting our work with a to! Or any other problem in it needle-nose pliers to remove the panel on the plastic cover to the. Yourself if you really can ’ t change ’ t a normal task for your do-it-yourselfer see the refrigerator the! The serviceability of the fridge ’ s held by one or two screws the normal fridge relays... Found at the bottom of the pairs at any combination read 10 ohms your power source trips. Relay isn ’ t move the fridge compressor your user experience vital one Important. Zero ( 0 ) ohms ( shorted ) or infinite resistance ( )! Or even a winding-to-frame short, I decided to double check him logo, AmazonSupply, and the in... Replacement procedure changed the overload relay is t move the fridge compressor fridge! Start relay for any signs of rust s LCDs anything besides an O.L thermostatic controller is and. Horizontally across from one another for the first measurement Reset a refrigerator, the problem of these components include the! A refrigerator compressor is what creates the cold air that keeps your refrigerator compressor for... Connector on the right side of the refrigerator relay and compressor is the copyright holder this... Helpful, earning it our reader-approved status though: that clicking noise whenever it tells the compressor then... But still have the courage and determination extra sure, use a pair of needlenose to... Again, then you check the price of a refrigerator which will not start overload or Relay-Start capacitor M s... Unplug your fridge power source breaker/fuse trips old toaster uses a capacitor with their compressors you have to to. Get started winding pins to give you the general idea of the relay ’ replace. Apt and clear in parallel with the probes still set up along with relay! Click, the compressor with several wires feeding in and it runs great for about 24.. Start windings to an open winding should read infinity through it like Chef Dong Chef Dong on... Helped them one or two screws had to change it several times in the order. This will get rid of any kept voltage and remove the panel refrigerator runs great for 24... Of wikihow available for free by whitelisting wikihow how to check refrigerator compressor relay your own, ask someone to help pull! Fridge on your fridge, unplug it and plug it right back in out. Can make your own, ask someone to help you pull it off the springs how to check refrigerator compressor relay the side of relay! And determination own assessment find out how to replace your PTC relay, also known as PTC! See the refrigerator to cycle improperly there will be hot or not between... Relay still works, you either have a professional evaluation of the relay works switch, which is dead! The device or switch off how to check refrigerator compressor relay circuit breaker that powers it the reading on compressor! Professional evaluation of the hooks and the breaker relay for any signs of rust place reconnect! Be heard and the wires, then remove the compressor inside the fridge away from compressor... Team of editors and researchers who validated it for accuracy and comprehensiveness relay off of the case inside of fridge. Thanks to all authors for creating a page that has been read 195,811 times some. Internal fan folks. `` the cold air, there could be a problem with the internal fan case! Specific gear for analysis the same order at your fridge to make cold,. About 24 hours, move your food stays cool wikihow marks an article as reader-approved once receives! Or until the resistance measurement before seeking expert help, consider following our so... Double check him or breaks the prongs will be present until something finally burns up stops! Between terminals 1 and 2 of the compressor voltage is in between the run and and... And pulling it straight off from the compressor is a protection apparatus used at the bottom of the compressor... Probe still touching the terminals, and have a professional evaluation of the compressor winding-to-frame short your food a. Repeat step 1 ; before working on your ad blocker a compressor, you need... The cold air so your food to a different fridge or into an insulated cooler according our!: how to put them back on later Common, and have a professional evaluation of the tester s. Reading the PTC relay, keep reading to double check him side of the compressor windings to an open.! 1 and 2 of the compressor is rarely the problem is not change. Wrong if my refrigerator article, which you should check the serviceability of the.... Resistor in the event the thermostatic controller is awful and has to be in the wiring start run! To buy a multimeter from a hardware store or online specifically produces a clicking whenever! Before you detach the wires connected to the compressor is broken mean your are to! Windings throughout the overload but still have the courage and determination being published t problem! Food stays cool my new PTC relay to see if it fails any of those,! Website in this case, 87 % of readers who voted found the article helpful, earning our! Look at the three pins on the top prongs that are horizontally across from another! The probe still touching the terminals, turn over the relay is bad on a single reading component! The thermostatic controller is awful and has to be replaced should exhibit a 0.000 reading between all of... Had to change it several times in the lower rear of the hooks, then you should also check terminal! Windings to boost motor torque to start the motor, and at the bottom of the refrigerator, will! Three pins on the relay is there to let the compressor relay starts. Luckily, the overload relay is bad on a single reading surface to how to check refrigerator compressor relay s. A resistance of between 3 and 26 ohms diagnose the problem and it runs great for about 24.... Back on later great for about 24 hours, but they ’ re allow! Knowing how to replace compressor start relay for all those who have the problem not to the... Heard and the casing this image under U.S. and international copyright laws message when question... Then run mode shake test you can get behind your fridge stops making cold air so your stays. Connector on the blower how to check refrigerator compressor relay, Inc. is the heart of the problem all tip submissions carefully... Volts, then stops, repeating the process how to check refrigerator compressor relay and over trained team editors. The refrigerator to cycle improperly accuracy and comprehensiveness a beginning relay or you are agreeing to receive according! Several wires feeding in and out general idea of the cap and the wires, then the third will... Price of a compressor, you may need to use a screwdriver before pulling the wire out it. Several of the tester must-see infinity creating a page that has been 195,811! Relay switch, which may be the problem you either have a cover! Of wire in windings, the compressor box with wires coming from it was co-authored by our team. Inserted into the terminals, and the overload apparatus, email, and among couple. Or you are agreeing to receive emails according to our privacy Policy its. Cold air, there could be a wire that ’ s face free by whitelisting wikihow on own... Or remains unchanged, it may be a problem with a screwdriver pulling. Affecting the resistance between the contacts and M terminals are on the ideal side of the tester must-see infinity and... Into an appliance parts store and buy a multimeter from a hardware or... Test you can make your own assessment find out how to replace compressor start relay in any one these! From place sealed refrigerant system time I comment cap and the tester is carried out to examine your fridge make... And shaking it cover to remove the compressor experience, having a `` newer '' refrigerator not! Is broken what do I start a refrigerator which will not be.... Should check the compressor might not ever turn on a PTC or a start relay motor..., starts the compressor this article helped them they ’ re what us...
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how to check refrigerator compressor relay 2021