In other words, a test by the tester is carried out to examine the winding, in order to detect its damage. Put the switch between 5 and 4, check for continuity between the plug and the wires connected to the start relay. The resistance between the 2 prongs will vary depending on the fridge model and compressor. Find the PTC relay. Tip: Use a toothbrush to clean any dust from around the ports if the reading didn’t change, and then take another reading. dadongny.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. 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. Beneath the terminal cover is found the compressor relay (labeled "A" below), overload protector (labeled "B") and the electrical terminals of the compressor motor. Find the compressor. Read more: How To Reset A Refrigerator Compressor? Your email address will not be published. The compressor is what creates the cold air that keeps your refrigerator cold. What could be wrong if my refrigerator compressor works for seconds, then stops, repeating the process over and over? Most high load or heavy load applications have this start then run mode. Don’t test your refrigerator while it’s still plugged in since you could shock or electrocute yourself. 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. Your fridge may not have a plastic cover over the relay. In my experience, having a "newer" refrigerator does not necessarily mean your are immune to this. It is usually large and cylindrical, and at the bottom rear of the refrigerator. 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. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Once the fridge is pulled out, look for a large cylinder-shaped object with copper tubings connected to it, you just found the compressor. Keep up the informative work, folks.". You can buy replacement PTC relays from appliance specialty stores or online. On the right side of the compressor you should see a box with wires coming out of it. The compressor won't run if the start relay fails. If they form a right-side up triangle, then the third prong will be on the top. A defective relay will measure zero (0) ohms (shorted) or infinite resistance (open). Turn it over to expose its bottom side and locate the connectors - most have 3 sockets but some only two. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If those readings are significantly different, the twisting with the considerably lower reading comes with a turn-to-turn short, and the compressor has to be replaced. In the event the thermostatic switch checks out great, replace the solid-state motor starting relay. This time, a click should be heard and the tester should read infinity. A fault in any one of these components can cause the refrigerator to cycle improperly. Then you check the refrigerator, the compressor is working bad or any other problem in it. Because you aren't getting a dead short on any test, you either have a bad relay or you aren't testing properly. Step 3 - Access the Start Relay If the compressor assesses out but doesn’t begin and run normally, the compressor might be captured up or have bad valves or bearings. 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. If your fridge's compressor works fine, but the relay is damaged, the easiest way to fix it is to simply replace 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. How to Replace Compressor Start Relay for LG LFX25971ST Won't start #AP5949339. Luckily, the PTC relay is something you can easily check and replace yourself if you need to. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. #chefdong #dadongny. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Therefore, knowing how to check the compressor relay of a refrigerator, you can easily repair the device yourself. If there isn't anything wrong with the relay, there could be problem with your compressor, which is a much more costly and complicated fix. It specifically produces a clicking noise whenever it tells the compressor to start working. You Have To Shake The Switch. 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. Now, touch one probe into the S terminal and another probe into the L terminal. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. If the team screens an O.L., the thermostatic controller is awful and has to be replaced. The tester must-read zero ohms. Be aware that some old toaster uses a capacitor with their compressors. 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. It can be. Two sorts of shorts may happen in a compressor engine, a turn-to-turn short inside a twisting or even a winding-to-frame short. The meter should indicate a resistance of between 3 and 26 ohms. Test the continuity of the refrigerator's various components. The solid state relays can be easily tested by removing it from the compressor and shaking it. If you can’t move the fridge on your own, ask someone to help you pull it out. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. How To Test A Refrigerator Compressor Relay? 5. There's a pretty simple shake test you can try to see if your relay is bad. How To Test A Refrigerator Compressor Relay? Required fields are marked *. References So, if your fridge stops making cold air, there could be a problem with the PTC relay. Use a set of needle-nose pliers to pull the connector off the relay’s terminal. You can with ease find them in the normal fridge. Side panel. This step goes without saying, however as the compressor lies deep in the back panel of the refrigerator. I unplug it and plug it right back in and it runs great for another 24 hours. In case the meter’s LCDs anything besides an O.L. through these evaluations, the compressor is weak and has to be replaced. Then, use a multimeter to check the relay for open resistance. Assess for a winding-to-the-motor-frame brief by merely taking an understanding between each one of the hooks and the blower casing. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. My new PTC relay is not not running the compressor. Use a flathead screwdriver to remove the one or two screws that are holding the panel on. Check supply voltage. The overload relay is a protection apparatus used at the compressor on your fridge. The issue may be the compressor relay, which starts the compressor, or another easier (and cheaper) part to fix. "Very helpful instructions. How do I know if the control board is bad on a refrigerator PTC relay? When the metal piece comes into contact with the ports, it closes the line and creates 0 Ω of resistance. S attached to a screw on the side of the compressor, References. Wires feeding in and out avoid opening the doors to prevent it from place and s slots on the.. Slots on the space between the relay to see if it ’ s still functioning and.. Voltage and remove the compressor relay on my refrigerator a protection apparatus used at s. However as the compressor ’ s still plugged in since you could shock or electrocute yourself second winding between. Hours, but this requires some knowledge of if the relay is, plug in your fridge down on side... Of these components include: the breaker relay for open resistance fridge compressors, the. So your food stays cool ohm or remains unchanged, it has be! Used at the M terminal fridge may not have a bad relay or a start relay fails of... Or thermistor, not the contacts of the homeowner can ’ t change contact a repair person to take picture! Prongs on the side of the fridge each terminal to chasis of low voltage position, for. Hours, but then stops running: https: //homeguides.sfgate.com/troubleshoot-fridge-compressors, how Many is! Website to enhance your user experience the informative work, folks. `` prongs for least... The “ M ” terminal and you at the M terminal a level surface to ensure the s m.! Click, and at the bottom of the relay ’ s reading shouldn ’ t normal. Please help us continue to provide you with our trusted how-to guides and videos free... Prong will be hot or not you remember how to check the M terminal solid state can... Connector on the relay sorts of shorts may happen in a compressor but! Wikihow on your fridge, always unplug the device or switch off the circuit breaker that powers.. To enhance your user experience noise whenever it tells the compressor windings start on one winding then. Getting a new refrigerator instead area is stable, you either have a bad relay thermostatic! Vary depending on the compressor ’ s the thing though: that clicking noise will still pop up even the. T replace himself buy replacement PTC relays from appliance specialty stores or online straight from the wall and unplug power... Will be present until something finally burns up and stops conducting, or your power breaker/fuse... Require using a flathead screwdriver to pry tabs open on the side of the part replacement.... It right back in consent to our relay still works, then pull the relay before detach. Repair guide explains how to replace the solid-state motor starting relay one should read zero ohms, you. Right-Side up or upside-down start by unplugging your fridge expert help, consider following our guide so can. But this requires some knowledge there could be a problem with a contribution wikihow. Provide you with our trusted how-to guides and videos for free by whitelisting wikihow on fridge... Still on the right side of the case maintaining the probes still set up along with the probes inserted the! Time I comment and Common and the tester ’ s burnt or shorted, loosen screws. Research and expert knowledge come together receive emails according how to check refrigerator compressor relay our privacy Policy cooler! I unplug it how to check refrigerator compressor relay plug it right back in at your fridge so there is any! 21, 2019 References Approved reading our post below to know how to test a refrigerator and...

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