Test the refrigerator relay switch to determine if it needs replacing. Then set your multimeter on connectivity test or diode testing. Testing the first pair should produce a reading of zero, or near zero, indicating continuity. Set the multimeter to the. The refrigerator does not works the whole time. Connect one testing lead to one terminal of the thermal overload protector and other testing lead to the other terminal of the compressor overload. It goes on and off during the cooling cycle, maintaining the ideal temperature inside the cabinet. The second pair may also result in … Any value between and around thirty-two to forty ohms should be considered as standard value. To test continuity, all you have to do is stick 2 terminals on your multimeter against 2 ends of an electrical current. Only one pair should give you a reading - it should be between 10 - 100 ohms. :o) Freeze! A multimeter is a multi-purpose electrical troubleshooting tool that gives you a measurement of voltage at different ranges, as well as measuring resistance and current. And you don't need to replace the overload. Move the refrigerator away from the wall and unplug its power cord from the wall receptacle. is similar to a clock, and if the motor that advances it fails, the defrost cycle will not be started, or maybe it will stay in defrost and not go back into the cooling mode. If you have an @autoranging multimeter, then turn it to the home setting. If your multimeter gave a zero reading as indicated above, then there’s a fair chance that it is still working fine. Remove the two leads (wires) on the thermostat. If you find that there is some connectivity then it means that the overload is alright and working properly. For the compressor to be connected, the start relay is required, it is responsible for supplying energy to the unit. I also published a post about working, How To Test Refrigerator Overload Protector Using Multimeter, Refrigerator Overload Protector Testing Using Multi-meter, principles of refrigerator compressor thermal overload protecto, How to test and wire refrigeator thermal thermostat switch, common places and problems of refrigerator not working, Distribution Board Wiring Diagram For Single Phase Wiring, How to Control a Lamp / Light Bulb from Two places Using Two Way switches For Staircase Lighting Circuit, Contactor Wiring Diagram For 3 Phase Motor with Overload relay, Ceiling fan Capacitor Wiring Connection Diagram. And if you don't see any connectivity then wait for 5 to 10 minutes and then tests the thermal overload protector again. Accessing the Relay Unplug your fridge. ... Do the test with a multimeter … Use a multimeter to test it; the resistance should rise or fall in conjunction with the temperature of the fridge, and it should have continuity. A platform to learn electrical wiring, single phase, 3 phase wiring, controlling, HVAC, electrical installation, electrical diagrams. 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. for continuity using a multimeter. As the bi-metal cools, it makes the. } Use a multimeter to find resistance. A complete guide of how to test or check compressor windings or checking compressor windings using multi meter. And you must change the overload protector with a new one with the same range. Diagnosing a Dead Refrigerator Check that the power cord is plugged in all the way. (adsbygoogle = window.adsbygoogle || []).push({ Use either a digital or an analog multimeter to check continuity–good electrical current–of the valve solenoid coils. Depending on the timer (there are many styles), you can usually put a flat edge screwdriver in the. 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. Quick video showing you how to test the thermostat on a basic refrigerator control. In this post, I will complete guide you about how to test a refrigerator thermal overload protector using a multimeter. Created with by OmTemplates | Distributed By Blogspot Themes, Today I am writing about the refrigerator overload protector testing using a multimeter. If the reading is zero or infinity (no continuity, no beep) the heating element is bad and should be replaced. If you're measuring the resistance of resistors, connect one probe to each end of the resistor. Then install it in a working freezer … Please note that a continuity test will not work on defrost heater because the ohm value is too high to register on a continuity test. Use a multimeter to measure resistance across all the pairs of the connectors on the underside of the PTC relay. If you … As it does, it opens the circuit. Capacitors are parts of the motors of your air conditioners, heaters, and your refrigerator compressors. Test it in a working freezer. Test the second set of wires: The brown wire is the start wire and the black wire is the common wire. google_ad_client: "ca-pub-8297086326810602", (timer switch) and turn it in a clockwise motion until it clicks. Take your multimeter and prepare the multimeter standard test leads. Sometimes when our refrigerator compressor stop working or not running a problem then we must call a professional to test the compressor or refrigerator. To check for an electrical failure, access the refrigerator water valve usually found at the bottom rear of the refrigerator cabinet. As you know that "thermal overload protector" is designed to protect the refrigerator compressor during over current flow. To test your capacitor, you would have to make use of a multimeter (if you don’t have a multimeter check on Amazon.com and pick one). You can perform the test while the assembly is installed, simply unplug the plastic connector. In this test, one of the pairs of terminals should produce a reading of, Read the directions on how to use your multimeter that comes with. There are three (3) main things that can go bad with the defrost system. How to test a fridge compressor using a multimeter - YouTube } When an electric motor fails to start, runs intermittently, runs hot, or continually trips its overcurrent device, there my be a variety of causes. the defrost heater element and defrost thermostat, basically does the same job as a defrost timer. You will be taking a measurement/reading of the electrical resistance. So apparently, one of the faults of your electronics could be with your capacitor. Pull your refrigerator away from the wall carefully so … A defective thermistor will thus hinder the appliance from cooling properly. , but someone might be working on a model with a. Sometimes the trouble lies within the power supply, including branch circuit conductors or motor controller. The refrigerator overload protector testing is very easy using a multi meter, to test your refrigerator thermal overload protector follows the below steps. The red probe goes to the test point and the black probe goes to ground or common. Take your multimeter and place the negative (black) multimeter probe on the brown wire. Next, remove the entire thermostat from your refrigerator and turn the dial to the warmest setting. Two are relatively easy to access, test and replace--the defrost heater and thermostat. If the motor itself has developed a fault, the fault may be a burnt wire or connection, a w… Keep your hands on the plastic potion of the probes so you don't get shocked. Pull out … :  Larger computer screens will show larger materials! It then redirects the power to the compressor and fans to come back on when the defrost cycle is over. A typical multimeter can measure voltage, current, and resistance. (for specific multimeter information and symbol meanings). In electrical applications, when an electrical circuit is capable of conducting current, it demonstrates electrical, to ensure that it is working properly by turning it on and touching the probes together -. KFM shows how to test if refrigerator capacitor is good freezer cap or bad fridge cap! How to check a faulty thermostat using a multimeter - YouTube But if you want to check your compressor himself then this post is for you. Like the defrost timer, it shuts off the refrigerator cooling devices and redirects the power to the defrost heater for the defrosting cycle. Job as a battery or outlet, to test a refrigerator thermal overload protector is connected or installed near starting... 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