Find the panel on the side of the compressor. So, before you contact a repair person and spend a lot of money on potentially needless repairs and replacements, use the following troubleshooting tips as a guide to potentially solving your refrigerator problem yourself. Use an ohmmeter set on the lowest scale to check the relay from the two terminals on the front of the case. Step 2; Find the compressor. Magic chef start relay refrigerator dehumidier compressor ptc 68 magic chef lg p6r8mc 1d. The compressor relay will go bad over time. Masters call it a ringing. The compressor relay can be accessed by removing the terminal cover box. 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 but everything else is running. 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. Unplug the refrigerator. Continued from page 1. Therefore, knowing how to check the compressor relay of a refrigerator, you can easily repair the device yourself. Hold the relay in your hand, and give it a bit of a shake. In other words, a test by the tester is carried out to examine the winding, in order to detect its damage. The solid state relays can be easily tested by removing it from the compressor and shaking it. The refrigerator overload protector testing is very easy using a multi meter, to test your refrigerator thermal overload protector follows the below steps. A defective relay will measure zero (0) ohms (shorted) or infinite resistance (open). The meter should indicate a resistance of between 3 and 26 ohms. (fried) If it sounds like a salt shaker and tiny bits of stuff is coming out of it then it is bad. There will be primary lines that are represented by L1, L2, L3, etc. The issue may be the compressor relay, which starts the compressor, or another easier (and cheaper) part to fix. The relationship between the refrigerator relay and compressor is a vital one … Important Safety Measures-. How do you check the compressor relay on a refrigerator? Fridge compressor running but not cooling. If the refrigerator start relay is burned out, then the compressor may not work and the interior will not freeze. Attach the start relay to the compressor at the same point, replace the back panel, and plug the refrigerator back in. 4. 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. Locate the starter relay switch and unplug it from the compressor. 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… When a compressor is bad, the repairs can cost more than what a new appliance would. Note: This video is intended to give you the general idea of the part replacement procedure. It’s normally big and cylindrical and in the rear of the fridge. If you shake the relay but there is no rattle, chances are fairly good that the relay is good, but your compressor is bad. When the refrigerator compressor is on and off and not run properly. The reading obtained between the Run and Common and the Start and Frequent hooks must be included. 5. On the ideal side of the compressor, you should see a box with wires coming from it. It tells the compressor when to turn on/off, depending on the need for cool air inside the refrigerator unit. It is responsible for powering the start winding for a brief moment to help start up the fridge compressor motor. Another fundamental and simple check is related to the state of the main and auxiliary coils of the compressor. You have to unplug the part from the compressor. 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. Also, if the compressor uses a capacitor, it must be discharged first to avoid the risk of electrical shock. It means the compressor has a start relay problem. How To Test the Compressor Relay. Now, it will act as an indicator of if the compressor indeed requires a replacement. Check the working parameters of the refrigerator compressor, but this requires some knowledge. 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. Then start looking for the starter relay switch. 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. 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