Process is for the oil. The port in your photo is a low side access fitting as it's reading compressor hermetic can pressure. You can add a small amount of refrigerant and watch what the evaporator does. The compressor circulates refrigerant throughout the cooling system, so if your refrigerator’s not cooling, the compressor or components that work with the compressor could be to blame. In this video, learn how to check the start relay, which activates the compressor, the electronic control board, which sends power to the compressor and the wires that connect the two. The compressor will try to draw refrigerant into its cylinders, but there is not enough to satisfy it, so the entire low side of the system will experience low pressure. You can put it on the low side of the compressor (larger of the tubes), and check pressures. A/C compressor goes on and low side goes into vacuum. Low Side: About 2 psig, although I’ve seen these systems pull a slight vacuum, 0 to -3 psig, when down to temperature, meaning the freezer is at 0℉. Free shipping. Compressor turns off then slowly goes back to about 30 psi. What should the low side pressure be on the refrig compressor of a 650 f subzero - Answered by a verified Appliance Technician We use cookies to give you the best possible experience on our website. The high side around 100 - 120. Pulled it away from wall and the low side copper line from the compressor was iced up all the way to the cabinet. Here’s a bunch of other refrigerator repair tips. On the side of the compressor there is a diagram that makes it pretty straight forward what you are dealing with. Lastly, medium-pressure systems need compressors that work in the -4 to 23 degrees Fahrenheit range. However, before you make a pricey call to a repair company, some simple DIY troubleshooting can frequently identify the issue with minimal effort.Below, we’ll provide a few simple tips for ensuring your fridge compressor keeps humming along for years to come. If it starts to frost further. If it starts running "normally" again, the compressor is overheating and it should be checked by a repair technician. Ans. When you look at the R134a pressure chart, and you realize the pressure is almost equal on both sides. $16.99. While the car is off, it's low at first, then it starts to climb the longer I leave the pressure gauge on. Find the low-pressure side of the AC unit using a process of elimination. 5. FREE Shipping. You’ll see a device called a starter relay switch, which you should unplug from the compressor. This condition causes the compressor to overload the prime mover, and expose the high-pressure side of the system to overpressure; The system overpressure avoided by fitting a compressor motor trip and relief valve at the compressor outlet ; Causes for discharge high pressure: Low coolant or air flow to the condenser. Now - in March 2018 it is no longer cooling. On the low side of the chart, the pressure is low while the temperature is high. $16.95. There also could be an obstruction of the refrigerant flow in the compressor. On one side of the hole is high-pressure refrigerant liquid. $346.37 $ 346. Air goes out. Free shipping. As I had heard so much about oil spilling out and mine did not I was a little concerned that the unit may not have any in it. The high side PSI gets up to 300. Says he has about half a dozen newer, in otherwise good shape, leakers. Today noticed it had been leaking liquid on the floor for some time. Asks me can you find and repair the leaks. The compressor on your refrigerator is designed to draw a certain current load, and comparing the expected to … … To find the flash gas flow multiply .122 by 889 to get, 108.5 pound per minute of flow for the flash gas from the low side economizer. I don't know if that is too high so I disconnect the power. When the compressor is turned off, the Freon will hiss and gurgle through the refrigerator’s capillary tubes as the pressure equalizes within the system. I'm guessing there is a restrict somewhere. Consider the following. The compressor was replaced 5 days ago on Friday 1/4/2019. Unplug the refrigerator for 2 hours and then plug it back in. You Fix Cars: Automobile Air Conditioning ; Writer Bio . Find the panel on the side of the compressor; it’s held by one or two screws. Air comes in. If it doesn't, it could be a defective compressor. I have photos of the water leaking out of the ice maker on the door as well.” I bought my French door LG refrigerator in Jan 2018. 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