$190.00 $ 190. Could you tell me how the Phase Rotation tester is used on the inverter to check it. Now what? Unravel the Mystery of this Simmer Switch Circuit... Sharpen your Schematic Analysis Skills for the New Year. If you see the current draw jump to say 4 amps (typical LR current in these inverter compressors) and then drop off, keep watching. Whats strange though is I could barely feel or hear the compressor running when it was and one of the ways I could definitely tell it was running was to put the tip of a long Philips screw driver to the compressor tank and then the handle end to my ear lobe. 00. A confirming test is to use a phase rotation tester to see if the inverter is actually producing all three phases. To determine the need to purchase a refrigerator with an inverter compressor, you need to study the principle of operation of such a device. wishfultech. inverter board is bad. Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together. Unplug the compressor and you'll see 3 pins on the side of the compressor. In the video, the board was already un-mounted from the compressor (around 2:40), but it wasn't shown how to remove it from the side of the compressor.Thanks for posting this, I learned a lot from it! Thanks for getting back . If you're a professional Appliantologist and you do this on a service call, you just bought your customer a new refrigerator! Free shipping and returns . Assuming you mean the actual compressor, they are treated like a 3 phase motor. In the video below, I demonstrate troubleshooting an inverter compressor system on a GE refrigerator. Any body have any thoughts on this issue. If the start relay fails, the compressor will sit there trying but failing to start and drawing locked rotor (LR) current. Disconnect the compressor from the inverter board, then check all 3 windings for continuity. We test the signal the main board is sending to inverter. 3. Current draw over nameplate rating would be a bad compressor. Buy It Now. developments in variable-speed compressor (inverter) operation. Inverter compressors have three windings, not just two like the old skool units. The inverter is the brains of the refrigerator. NVERTERMP 2.0 INVERTER 4 + + Phase 6 Neutral On/Off Thermostat L N Figure4.2: EnergizedContactDrop-In connections. I already replaced - 3 thermisters (1 in FZ and 2 in FF) - the mother board (main board) The compressor still dead silent. October 16, 2013. Other names for this same part are Inverter Box, Inverter Board, Compressor Control, or Digital Speed Control. There are some pins denoted TEST/SS pins but could not get a useful output when checking the U,V,W outputs with a differential probe. In the hermetic type, it can either be a scroll or reciprocating compressor. $275.14 $ 275. Learn to test your LCD screen's inverter board. I replaced the motor and the repair was completed. check the resistances in all three windings to rule out an open winding. Here we show you how to test you relay on the compressor and for a short in the compressor when the compressor won't come on but everything else is running. Assuming you mean the actual compressor, they are treated like a 3 phase motor. If the inverter board was replaced and the compressor still wont' start, either your main control board has failed and needs to be replaced, or the compressor is bad. I was not getting the 5 volts dc (VCC)   coming from the main board up top. 1,030 inverter compressor with control board products are offered for sale by suppliers on Alibaba.com, of which inverters & converters accounts for 13%, refrigeration & heat exchange parts accounts for 2%, and general industrial equipment accounts for 1%. Est. The inverter board is a small circuit board inside your LCD screen that supplies power to your LCD's backlight device, which lights up your LCD screen and allows you to view images, graphics and videos on your screen. When checking inverter voltage output, connect the test-meter leads to any 2 of the 3 compressor lead wires at the inverter plug (plug should be connected). It just shows three wires connected to the CCU. Also, check the frequency on the PWM line. So, inverter compressors, unlike their old skool forebearers, really can work harder. I have a direct devise i got from G.E 30 years ago make by ROBINAIR that iforgot to give back to them 30 YEARS ago and its made just like your diagram.Comes very handy. Current test standards allow inverter AC (IAC) manufacturers to “lock” the compressor speed for a desired “rated” capacity. Guest. To confirm it is the inverter that went bad, Just test J15 on the control board for the presence of 4-6 VDC and test the three terminals on the compressor windings for continuity which is usually around 7 ohms each. I have a direct devise i got from G.E 30 years ago make by ROBINAIR that iforgot to give back to them 30 YEARS ago and its made just like your diagram.Comes very handy. All 6 … HI Samurai, I am a student also and love your site . So today, let’s take a deeper look into the inverter compressor and how the control board drives that compressor. If the compressor is supposed to be on at this point then the running dc voltage you should be getting from the main control board will be 4-6 volts DC with the wires connected and measuring at the inverter. There are two power cables connected to each end of the inverter board. Now at this point I assumed that the reading was ok  because it was in the 4.6 DC range  even though the reading was fluctuating up and down on my meter. Answer Hello Reynaldo, the compressor's inverter board is getting the correct run signal (4vdc), using a multimeter check the compressor's windings, they should all match,with no open/short/ground, if ok then replace the inverter board.241577505. I am just not sure how to use it. Check compressor windings all equal 1 to 4 Ohms . CH22 Inverter compressor run current high. Remove the plug that attaches to the compressor and then with the power on check your voltage coming to the compressor. Either way, the go-to document for this is the schematic. Use an electrostatic wrist wrap to prevent Electrostatic discharge (ESD) from damaging your LCD screen while testing the inverter board. Condition: New. Recently I struggled with a ge profile fridge side by side  and the complaint was both freezer and fresh food sections are warm. In this case, if the MOBO really was bad, then the phase rotation tester wouldn't have shown you anything new because the inverter wasn't putting anything out apparently due to a bad PWM signal from the MOBO. I observed that both evaporator and condensor fans were operating normally. I then went to the compressor unplugged the inverter and measured the resistance between each of the two pins. I ended up replacing the MO BOard and I got the compressor to run. All three windings should have the exact same resistance. 9v battery power cord. Ausstattung Vollkunststoffräder mit Gummilauffläche, Druckminderer, 2 Manometer, 1 DL-Anschluss, Motorthermoschutz. This is partly how the Danfoss Optyma plus inverter condensing unit works, it has a very clever control loop which is measuring the cooling load and then changes the speed of the motor, which changes the speed of the scroll compressor and that increases or decreases the cooling capacity to match the load and achieve precise temperature control as well as energy savings. The only thing I didn't show in the video is checking the inverter board's current draw. That is the Inverter Board that is in a gray plastic box that is attached to the side of the compressor (on the Monogram). Other manufacturers may have different test schemes but the idea is the same: if the inverter is working properly, you'll see activity on your amp meter as the inverter tries to do its job. Good troubleshooting, Darren! These are inexpensive testers that you can buy here: http://amzn.to/1huTIVJ. You can't test the main control board but you can test the compressor. 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