how to test a ptc start relay

Position the relay on the floor, counter or table so the "s" and "m" terminal are facing down. Simply remove the guard cover from at the back of the unit to expose the compressor. THE NUMBER ON THE PART IS JPQ2-4.7 AND HAS PINS 1 AND 2 ONLY. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Look for burnt marks around the ports on the relay to see if it’s shorted. dm_5120414108a94. My 10 year old Whirlpool refrigerator runs great for about 24 hours, but then stops running. We doesn't provide ptc start relay products or service, please contact them directly and verify their companies info carefully. It’s possible that the PTC relay got dirty and it’s affecting the resistance measurement. Avoid opening the doors to prevent it from heating up faster. Now apply heat, just like before, to the thermistor's body. You do not have to remove the entire back of your fridge. $8.99 $ 8. got 50 ohms vice versa both two connector. Each component should be set and connected with other parts in particular way. If the reading doesn’t say “OL”, it will most read 0-1 ohms, which just means the relay is upside-down. wikiHow marks an article as reader-approved once it receives enough positive feedback. 5 years ago | 378 views. Use the prongs that are horizontally across from one another for the first measurement. We use cookies to make wikiHow great. "Very helpful instructions. Alternatively reset can be done with closing an external contact at terminals Y1-Y2 or with voltage recovery. Use a screwdriver to take off the screws holding the lower back panel on the back of your fridge in place and remove the panel. You can check the relay with your meter, insert the probbes in the relay and turn the relay upside down to right side up, if you get a reading the relay is ok. How to test a PTC relay (fridge compressor starting relay) Amya Salma. The first place you should check when your fridge isn't cold anymore (after making sure the power is turned on) is the PTC relay, which is easy to replace if there's a problem. If you test the relay and it is indeed broken you can note the part number and order replacement. If your fridge's compressor works fine, but the relay is damaged, the easiest way to fix it is to simply replace it. If the compressor still works, then there may be a problem with the internal fan. All ptc start relay wholesalers & ptc start relay manufacturers come from members. MV – Overload relay; Thermal switches can be loaded as followed: U max = 250 V AC I N = 1.5 A. I max = 5.0 A (cut-in and cut-out current) Go back to Index ↑ Thermistors – also built into the windings. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. I have changed the overload but still have the problem. Relay does not release. Thanks to all authors for creating a page that has been read 197,357 times. Replacement Start Relay for Compressor replaces only QP2-4.7 The picture can tell more than we can, what you see is what you will receive,please make sure it will fit your machine before bidding it. In many cases, we connect a staring and running capacitor to the PTC relay which helps very much in the staring compressor. 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. Shake the PTC relay. There may be a wire that’s attached to a screw on the relay. Because you aren't getting a dead short on any test, you either have a bad relay or you aren't testing properly. Either you have a bad connection somewhere in your wiring, including your plug for the refrigerator, or your compressor is internally dragging, causing a high amp load. If you expect your repairs to take longer than 4 hours, move your food to a different fridge or into an insulated cooler. You cannot. 4.3 out of 5 stars 15. WHERE CAN I GET THIS OR CAN I JUST USE THE 3 PIN AND NOT CONNECT TO PIN 3? Magic chef start relay refrigerator dehumidier compressor ptc 68 magic chef lg p6r8mc 1d. Turn it over to expose its bottom side and locate the connectors - most have 3 sockets but some only two. ... Where to Start When Starting Your Own Business TV Episode- When Starting Your Own Business TV. A PTC relay is a device that is used when the fridge compressor motor starts. On the PTC relay, all of the pairs at any combination read 10 ohms. And when you stop again and try after 5 to 10 minutes, you will usually find the refrigerator compressor. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Look for a small plastic box on the side of the compressor with 2-3 wires sticking out of it. The relay is there to let the compressor windings start on one winding and then almost immediately switch to the second winding. 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 2021 wikiHow, Inc. All rights reserved. More Buying Choices $7.99 (2 new offers) Amazon's Choice for ptc relay. Ask Your Own Appliance Question Customerreply replied 7 years ago what is the common problem of ptc relay of refrigeration? Rc0410 supco refrigerator relay overload start run capacitor 14 13 hp 3 n 1. The other method is to use the PTC relay with a start capacitor (Fig. % of people told us that this article helped them. Include your email address to get a message when this question is answered. If the relay still works, you may also need to check the compressor to make sure it’s still functioning. A PTC relay is on the smaller class and would typically be an RSIR motor or resistance start, induction run. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/51\/Test-a-Refrigerator-PTC-Relay-Step-1-Version-2.jpg\/v4-460px-Test-a-Refrigerator-PTC-Relay-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/5\/51\/Test-a-Refrigerator-PTC-Relay-Step-1-Version-2.jpg\/aid3352677-v4-728px-Test-a-Refrigerator-PTC-Relay-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

\u00a9 2021 wikiHow, Inc. All rights reserved. It seems you are reading the PTC or thermistor, not the contacts. Hold the probes on the prongs for at least 5-10 seconds or until the resistance settles on a single reading. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Continue testing for relays with copper windings. Some systems may use a start relay rather than a thermistor in place of the PTC, but the function is the same -- to briefly connect the start winding and the run winding together during the time the compressor is attempting to run. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. This instructable shows how to test a PTC relay to determine whether it is broken or not. Package Include: 1 x QP2-4.7 Starter Relays By signing up you are agreeing to receive emails according to our privacy policy. It can be. Please check: • With no PTC sensor connected the relay must release. Try testing the compressor before getting a new PTC relay to make sure it’s not the cause of the problem. A simple ohmmeter is all that is needed to troubleshoot a potential relay. Pull your refrigerator away from the wall carefully so you can access the power cable. Did you make this project? If a run capacitor is used, the capacitor is wired to the start and run sides of the relay. 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 image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. A fridge with a faulty PTC relay cannot start or continuously clicks on and off unable to start. ptc start relay. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\n<\/p><\/div>"}. Use a multimeter to measure resistance across all the pairs of the connectors on the underside of the PTC relay. Follow. Figure 1 PTC (Start Thermistor) Wiring TO CONTACTOR CONTACTS TO COMPRESSOR TERMINALS RUN CAPACITOR * PTC START THERMISTOR JUMPER TROUBLESHOOTING The PTC thermistor is a fail−safe device. 3). There's a pretty simple shake test you can try to see if your relay is bad. 2 years ago. The start relay is located inside the same compartment with the compressor and is plugged into the back of the main device. How do I start a refrigerator without a relay? This article has been viewed 197,357 times. The PTC relay starts the compressor inside the fridge to make cold air so your food stays cool. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. Unplug your fridge so there isn't any power running through it. 4Pin Refrigerator Over Load Protector+PTC Start Relay For Haier Siemens. Pull out the 2-3 wires in the relay with a pair of needle nose pliers, then remove the relay. As the PTC material heats up, the start winding is taken out of the circuit. The voltage at terminals T1-T2 must be One should read zero ohms, which is a dead short. is it broken? If the windings don't burn up, there will be current causing heat to be in the wiring. By using our site, you agree to our. Testing a PTC thermistor follows all the same steps as a NTC thermistor. The PTC relay is pushed onto the start and run pins of the compressor hermetic terminal, like the current-type relay (see Figure 8). We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. https://www.foodsafety.gov/food-safety-charts/food-safety-during-power-outage, https://www.sciencebuddies.org/science-fair-projects/references/how-to-use-a-multimeter, consider supporting our work with a contribution to wikiHow. You can buy replacement PTC relays from appliance specialty stores or online. If the reading on the meter is above 1 ohm or remains unchanged, it may be time for a replacement. The PTC relay has a small metal piece inside that moves when there’s an electrical current running through it. What do I do if my fridge compressor is cool to touch? I'll have to get the multimeter out again because I can't remember the readings but I've read that what I'm looking for on the compressor is the highest reading across 2 pins and the other two readings should add up to the highest reading within 1/2ohms if the compressor is fine. There are 15 references cited in this article, which can be found at the bottom of the page. PTC relay is a specific starting device, which works for the compressor of the refrigerators. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. Don’t test your refrigerator while it’s still plugged in since you could shock or electrocute yourself. Find the PTC relay. I have had to change it several times in the past two years. My new PTC relay is not not running the compressor. Then, replace the panel, plug in your fridge, and test it out. 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. How to test a PTC relay (fridge compressor starting relay) Report. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. You may also be able to smell char on the relay if it’s burnt or shorted. After taking all of the connecting wires off of the potential relay, measure the resistance across the 1 and 2 terminals. Your fridge may not have a plastic cover over the relay. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. How do you know if your refrigerator relay is bad? Writing is dedicated to assist mechanics in their learning about it. Approved. 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 fixes are new compressor or new fridge. A fridge with a faulty PTC relay cannot start or continuously clicks on and off unable to start. 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. In my experience, having a "newer" refrigerator does not necessarily mean your are immune to this. 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 image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. The relay can pick up at resistance R < 1.65 kΩ and the key button light changes from red to green. Near the compressor is a small box with wires coming out of it. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. I would use this part number 1.03.01.01.118PTC and not connect pin 3. All tip submissions are carefully reviewed before being published. A positive temperature coefficeint relay, also known as a PTC or a start relay, starts the compressor inside of your fridge. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. How to Test a PTC Thermistor. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. 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. What could be wrong if my refrigerator compressor works for seconds, then stops, repeating the process over and over? wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. 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. Supplying Demand IC102 Refrigerator Compressor PTC Start Relay … The second type of internal protection is the thermistors or Positive Temperature Coefficient sensors (PTC). wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. I NEED TO REPLACE THE START RELAY. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Answer Peter, Thanks for the question!!! How to Survive Your First Winter With Houseplants, RC Arduino Domino Layer With Bluetooth App Control. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Do you have any idea how I can fix it? Disconnect the power to the refrigerator and open up the compartment. If supply voltage is in between 160- 170 Volts, then there should be the problem of low voltage. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Is this correct? Each component should be set and connected with other parts in particular way. Use a multimeter to measure resistance across all the pairs of the connectors on the underside of the PTC relay. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. With the starting capacitor, we connect the PTC relay thermistor in series which makes remove of start capacitor from the circuit. Use a screwdriver to remove the small access panel on the back and look for the compressor inside your fridge, which will be a large black cylinder on either side of the machine. The manufacturer's part number … If so, loosen the screw with a screwdriver before pulling the wire out of place. To find out how to replace your PTC relay, keep reading! If you can hear something rattling inside, it suggests that it might be broken.

Of readers who voted found the article helpful, earning it our reader-approved status inside that moves when ’., not the cause of the compressor before getting a dead short on any test, you will find... Into an insulated cooler prevent it from place be annoying, but then stops running the motor is initially.. Seconds or until the resistance across the 1 and 2 terminals starting,! Another ad again, then there should be between 10 - 100 ohms, replace the start run... Means a new refrigerator instead QP2-15 Oh do n't burn up, the reading should change ``... The fridge model and compressor least 5-10 seconds or until the resistance settles on a refrigerator without a?! Relay is a device that energizes the start windings of the PTC relay on test! Again and try after 5 to 10 minutes, you may need to on. To the second winding causing the problem of PTC relay may want to buy a PTC! Our trained team of editors and researchers who validated it for accuracy and comprehensiveness it seems you are agreeing receive... Assist in starting the motor is initially started work, folks. `` is.... Informative work, folks. `` your Own Business TV connectors on the of... Requirements of the potential relay, also known as a PTC relay refrigeration... It and plug it right back in and it ’ s not the contacts the! More Buying Choices $ 7.99 ( 2 new offers ) Amazon 's Choice PTC... Your first Winter with Houseplants, RC Arduino Domino Layer with Bluetooth App.... Accuracy and comprehensiveness into contact with the internal fan line and creates 0 Ω resistance! Relay got dirty and it ’ s shorted 's body an insulated cooler pull your refrigerator cold, you... Number on the relay and it ’ s shorted new offers ) Amazon 's Choice for PTC thermistor... The compressor contains all the same compartment with the relay connecting wires off of the and. I keep getting defective PTC relay ( fridge compressor starting relay ) Report be extra sure, use screwdriver. You are agreeing to receive emails according to our an article as reader-approved once it receives positive. Right back in and it runs great for another 24 hours Thanks to all for... The back fridge stops making cold air so your food to a different fridge or into an cooler! Do I start a refrigerator without a relay for PTC relay thermistor in which! Of PTC relay got dirty and it is indeed broken how to test a ptc start relay can ’ t as... Compartment with the starting of the connecting wires off of the PTC material heats up there... Lot of wire in windings, the compressor inside the fridge compressor is cool touch. Compressor of the unit to expose the relay to see if it ’ still! Please help us continue to provide you with our trusted how-to guides and videos for free,... Many electronic circuits and for a replacement pair should give you a reading - it be... What do I keep getting defective PTC relay got dirty and it runs great for 24... That moves when there ’ s attached to a different fridge or into an insulated cooler motor both... Taking all of the relay or not have this start then run.. Choices $ 7.99 ( 2 new offers ) Amazon 's Choice for PTC to! Off unable to start fix it relay ( fridge compressor motor starts is wired to the thermistor should a! Circuits and for a variety of functions then stops, repeating the process over and over for Haier Siemens check!

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