How To Test A Refrigerator Start Relay . Either memorize the wiring or take a few pictures just to be sure you know how to put it all back together when you're done. Start Relay. Testing Normally Open Terminal of a relay with a multimeter, Read More: How to Test an Inductor with Multimeter. Expose the back of the fridge to get access to the motor. In this post, I am going to teach you how to test a relay with a multimeter . In the Relay, there is a coil and that coil has some resistance, using that resistance knowledge we can find that the relay is a good one or not. Insert the multi-tester with one probe on each of the 's' and 'm' terminals. You will find the resistance of the relay coil. how to check overload relay with multimeter. How To Test A Relay With A Multimeter. Find the fridge compressor and remove the plastic case that houses the starting circuitry. If the compressor is defective, it must be replaced by a licensed technician. This box can be identified by the thick red, … Click to see full answer Considering this, how do you test a freezer start relay? Procedure: Take a multimeter and put it on the ohmmeter settings. Luckily, these common fridge parts are relatively inexpensive and easy to replace. Pull your refrigerator away from the wall carefully so you can access the power cable. Only one pair should give you a reading - it should be between 10 - 100 ohms. The refrigerator relay and compressor relationship is an important one that not only saves energy and ensures the proper operation of your appliance but also ensures that the refrigerator doesn't overheat. If you can hear something rattling inside, it suggests that it might be broken. Find the PTC relay. Unplug the start relay from the compressor and give it a shake. To check the coil’s resistance with a multimeter, take a multimeter and put it on the ohmmeter setting then connect the multimeter probes on any two terminals of relay’s coil. If you can't get any reading at all make sure you set the multimeter on the lowest resistance or Continuity range and repeat the measurements. In this article, we learned that there are two ways of finding the functionality of relay whether the relay is working well or not. Hey Mike Garland, Thanks for your comment, keep visiting StudentsHeart.com, Hey MuthuKumar, Thanks for your comment, keep visiting StudentsHeart.com, Your email address will not be published. New motor shows up in 3 days. Then set your multimeter on connectivity test or diode testing. A5 Terminal box compressor. Template:Video:Test a PTC Relay / Starting Relay, Test a Fridge Compressor (or Any Single Phase Electric Motor), How to measure resistance using a multimeter, Make an Air Compressor from an Old Refrigerator, https://kipkis.com/index.php?title=Test_a_Refrigerator_PTC_Relay&oldid=80332, Creative Commons Attribution-NonCommercial-NoDerivs 2.5 License. If there is no continuity, it is bad. Unplug your fridge. Turn the unit over again and place one probe from the "s" terminal to the "L" terminal. Shake the PTC relay. Start by taking the fuel pump relay out of your vehicle so you can clean and inspect it. Remove both wires from the thermal overload protector. After that, you can use a multimeter to check the resistance going through the relay’s circuit to see if it’s faulty or not. Test the start relay between the start and run terminals with a multimeter. The refrigerator … Beside that technique of finding the relay functionality, you can use this method also. The refrigerator relay usually works pretty covertly, but it does tend to produce a sound. And your relay will work correctly otherwise you need to replace your relay. If you can hear rattling on the inside of the start relay, then the part is bad and will have to be replaced. There's usually a diagram somewhere as well - make sure you can follow it and identify parts. A start capacitor is a capacitor that alters the current output so that the motor can start turning. The part number for your model's relay is PS453311. The purpose of testing a relay is to find, whether it is good or bad . Just remove the relay from the compressor and then remove the compressor overload protector. You can attempt to check the run capacitor for electrical failure on your own using a multimeter to test the refrigerator start relay. How to Test a Refrigerator Relay Switch. If you determined that it is broken, note the part number and order a replacement. So I’ll try again. The main reason for testing a relay is to find, whether it is a good or defective one. Use a multimeter to measure resistance across all the pairs of the connectors on the underside of the PTC relay. If you still get no indication of continuity, the PTC relay is broken. It is plugged onto the 3 prong connector on the side of the fridge compressor. Insert the multi-tester with one probe on each of the "s" and "m" terminals.Set the tester to zero ohms. Testing Normally Closed Terminal of a relay with a Multimeter. Otherwise your relay is faulty and in this case, you have to replace it. Thanks. Now if you found values near to the datasheet values of the relay’s coil then it is perfect. Find the 's' and 'm' plug-type terminals and the 'L' slip-on terminal. In the measurement of NO contact there should be the resistance of MΩ, if you find the value of MΩs then this NC terminal is working fine, and the reason behind this is that when NC and COM are not connected there is a huge amount of impendence. In the measurement of NC contact there should be 0Ω while measuring this contact, if the value is 0Ω then the Normally closed terminal is working fine. Note that values and move on the second step, which is finding the resistance value of a coil with a multimeter. Take a multimeter and put it on the ohmmeter settings. Use a pair of needlenose pliers to pull the connector off the relay's terminal. Use a digital multimeter (DMM) to test the resistance between each pole of the relay and the corresponding NC and NO contacts for that pole. I hope this helps. Turn it over to expose its bottom side and locate the connectors - most have 3 sockets but some only two. Access to the motor the power cable windings of the refrigerator might go bad, overheat even! Not good enough methods - proceed to the next Step to be sure it could be,! Terminals.Set the tester to zero ohms Normally Closed terminal of a relay a! Is stick 2 terminals on your own tolerance value ways to do is stick terminals! The polarity of probes on terminals doesn ’ t matter because we are going to learn how test. Part is bad is advised to test a freezer start relay works in conjunction with the start to... Can clean and inspect it over to expose its bottom side and locate the connectors on the capacitor to! 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