This Independence Day, shop from a variety of home appliances for your friends and family. SALTON FRIDGE DRAIN PAN. I have done this on another refrigerator that had three terminals on the compressor, but this one is different. Here’s something else I get a lot of questions about: testing refrigerator and freezer compressors. Product Sold Out. Make sure that it rests on the infinity. FITS MODELS: SF420BFSD, DBF380SD. Hi guys, just to give an update. It then redirects the power to the compressor and fans to come back on when the defrost cycle is over. (adsbygoogle = window.adsbygoogle || []).push({}); Copyright @ 2009 - 2020, "www.ref-wiki.com". If it doesn't, the refrigerator won't get cool enough to preserve your food. I had a look at the data sheet of the compressor (NJ2212GK) and the resistance rating for the start winding is 7.25 ohms, the rated resistance value for the run winding is 1.95 ohms. 5.0 (5) 13 Orders. 0 0. Let’s say you’re gonna do some tests on your refrigerator compressor to see if it’s okay. There are many ways to mark them as different colors tape, black bars electricians tape notch with the knife blade. US $9.33 . Learn to test the start relay of the compressor: 1. Set 01. Test the refrigerator defrost heating element for continuity using a multimeter. There's usually a diagram somewhere as well - make sure you can follow it and identify parts. WHIRLPOOL FRIDGE COMPRESSOR DRIP TRAY DISH**DISCONTINUED. View All Answers. //-->. If the resistances vary from each other by as much as a 1 ohm, the compressor will not run correctly. You will need a good ohmmeter that can be measured with one ohms up to 20 kOhm. Or, you need to figure out how to wire up a generic (Supco) start relay/overload combination. So long as you tested with your megger between any of the three compressor terminals (wires removed) with one test lead, and with the other test lead on a good earth and got a low reading (below 1 megger ohm (ish) it should be way above this) the the compressor has took a dirt nap. Show/hide. Some also record and make calculations to help make the cycle more accurate. Remember to exercise extreme caution because on a 90-degree day, the pressure in a de-energized R410A system can be approximately 275 psi and when a compressor has shorted out, the plug can overheat and become soft. The compressor is the heart of the refrigerator's hermetically sealed refrigerant system. A shorted motor will read 0 ohms across windings, to ground, or both. Carefully disconnect the wires with a pair of pliers, and then remove the relay by pulling it off of the prongs on the compressor. Set the multitester to the ohms setting X1. This procedure is used also in case, if the compressor is not running when called to do so. The fan should come on whenever the compressor cycles on. Note the resistance. Hi guys, just to give an update. google_ad_height = 280; Calling the service line is a joke. This condition occurs when either the crankshaft bearings capture due to lack of lubrication, or compression breaks within the compressor shell squeezing the crankshaft. The resistance readings between the 3 pins are 1.1 Ohms (between the compressor pins that are ultimately connected to the line voltage), 18.8 Ohms, and 17.9 Ohms. If the continuity test is negative the component has failed and will need to be replaced. Correct Answer. When this happens, the fault could be in the wiring, the control panel or the fan itself. Can't find what … Finally, the resistance between run and start should be the sum of S to C and R to C. Remember, there should be a measurable resistance through each winding. Refrigerator Compressor Testing. In the case that any of the tests above fail, you need to check the compressor posts themselves. Refrigerator Compressor Relay Starter for QP2-15 QP2-12 Universal Type Three Inserts 15 Ohm Refrigerators Accessories 5.0 Store: Alison living Store. google_ad_client = "ca-pub-2749758595940365"; How to Troubleshoot Fridge Compressors. Show/hide. Grounded compressor (short circuit). Refrigerator Overload Protector Testing Using Multi-meter Here I try to make you understood using a simple refrigerator overload protector testing troubleshooting diagram. The compressor is the heart of the refrigerator's hermetically sealed refrigerant system. Faulty Start Relay or Capacitor . The multitester should display a reading of zero ohms. You may occasionally hear this type of noise from the back of the refrigerator (starts about 15 seconds in): This is the sound of your compressor trying, but failing miserably, to start. 3. The internal overload is wired in series with both the start and run winding which prevents the compressor from coming on. Testing Refrigerator and Freezer Compressors. Allowing the compressor to cool down should reset the internal overload but you need to investigate further ensure the reset was indeed completed. But if you want to check your compressor himself then this post is for you. [13] Locked rotor. The main purpose of a start relay is to assist and provide additional torque to start the compressor. In the below diagram I have shown an Analog multimeter set on the connectivity test, ohm test (resistance testing). In this post, I am telling you about some main and common reasons for compressor not working and about testing compressor methods. The fan should come on whenever the compressor cycles on. Part no: COMD. In order to determine the exact cause of a compressor malfunction, manufacturers say thorough and accurate diagnostics are a must. Compressors For Refrigerator & Freezer. When testing across the compressor terminals, first make sure all the terminals are bare, nothing connected to them and the terminals are not corroded. So you pull the relay cover off the compressor, remove the relay/overload and this is what you see. Shake n’ Tell for a Bad Compressor . With the compressor being the most expensive component in the system, it is wise to be sure that it was bad before condemning it. To test the sensor: – Measure the temperature of the sensor or the space the sensor is in. Get shopping advice from experts, friends and the community! Advanced AC & Heat Pump Diagnostics. With the relay removed from the compressor, the resistance between the start winding and common is 3 ohms, between motor winding and common is 9 ohms … Find the fridge compressor and remove the plastic case that houses the starting circuitry. The ohms readings between the terminals are 4.7, 5.3 and 10. A refrigerator requires a compressor to keep the interior cold. Pack: 1. A shorted motor will read 0 ohms across windings, to ground, or both. A fridge with a faulty PTC relay cannot start or continuously clicks on and off unable to start. Check the manufacturer's spec for what that exact resistance reading should be. So the readings I get are not 'so' off but there are a bit off. US $3.00. (0:23) - STEP 2: Remove lower front panel from cooler. Therefore, when you remove the compressor leads (wires) from the plug to check resistance through the compressor windings, the pressure of the Freon can launch the plugs with as much as 20,000 pounds of force. The compressor on my Kenmore model 106.54682300 runs for 5 sec and shuts off, comes back on in 2 min and repeats. Kenmore Elite79049. How to Test a PTC Relay / Fix a Fridge That Cannot Start / Clicking Fridge: A PTC relay is a device that is used when the fridge compressor motor starts. Here’s something else I get a lot of questions about: testing refrigerator and freezer compressors. Compressor won't run or it is "clicking' on and off: This normally could be a bad start relay and over load for the compressor, dirty condenser coils need cleaning, condenser fan motor is not running or the compressor itself. A fridge with a faulty PTC relay cannot start or continuously clicks on and off unable to start. They add to a perfect 10, but I am not sure if starter coil resitance and the winding resitance should be that close. They are ideal if you need: + a silent compressor + a high pressure compressor + have little space and/or don't need a typical shop compressor Typical fridge compressors are 100 - 300 watt units, deliver 0.7 - 1 CFM of air and can reach pressures over 500 psi. Or, you need to figure out how to wire up a generic (Supco) start relay/overload combination. Purchase a new compressor motor if your ohm readings are high. 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. Sometimes when our refrigerator compressor stop working or not running a problem then we must call a professional to test the compressor or refrigerator. Buyer Protection . A heating and air specialist may be able to repair the broken compressor motor instead of having to buy an entirely new compressor. Step 1 - Understand What and Where. If the resistances vary from each other by as much as a 1 ohm, the compressor will not run correctly. You will need a good ohmmeter that can be measured with one ohms up to 20 kOhm. HQRP 4.7 Ohm 3-Pin Compressor PTC Starter/Start Relay and Overload Kit compatible with Compact Mini Fridges, Beer/Wine Refrigerators, Beverage & Wine/Beer coolers, Deep Freezers . To find out Lee decided to run his own test on three of the fridges that Magnum Motorhomes sell – the Dometic CRX50, our Vitrifrigo C51i and the Chinese DC-50. FITS MODELS: SAL120M, SAL120W. This can be due to excessive loads, poor airflow or lack of superheat. Set 02. Inc. “This will help avoid operational issues generated by improperly p… – Measure the sensor resistance. Find the PTC relay. Make sure that the power is off. New user coupon on orders over US $4.00. You should have an infinite OL resistance to ground.