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I'm trying to gather information that would provide an explication why 3-in-1 start kits burn out modern R-134a compressors.
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These 3 n 1's burn out start windings and should NEVER be used on a modern R134A compressor. Check your start winding, you will probably see a blown open winding. If not blown open, unfortunately the only way you can verify a burnt out compressor is to install the proper start device.
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Hello Simon,
I just checked each compressor terminal and none of them were grounded (there was no continuity between the compressor housing and each of the compressor terminals).
I plugged in the refrigerator again and I checked the voltage on the 3 in 1 and it was continually ~120 volts. I ran pretty good for about 3 minutes and it was cooling good giving 2.18 Amps. on the Run Terminal (red wire) and 2.32 Amps. on the Common Terminal (black wire), but after about those 3 minutes the compressor shut off giving ~8.8 Amps. on the common terminal and about the same also on the run terminal, the compressor got so very hot that I had to unplug the refrigerator, but even right before I unplugged it the 3 in 1 was still receiving ~120 Volts. I think that we need to do some more troubleshooting on this refrigerator. Please let me know your comments.
Thank you,
Miguel
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Hi. You should not use the 3 in 1 on the models with adaptive defrost controls. Check if you are getting 120v to the 3 in 1. If not go to the fresh food side and in the top left corner remove the cover and check the ADC. Most likely it's burned. Next check if the compressor is grounded (continuity from any of the three leads to the ground). If the compressor not grounded and windings show normal resistance, then replace the ADC. The ADC Part number: AP4909015
Install proper starting relay and overload. The relay and overload Part number: AP3837323
Thank you. Post the results. Simon.
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Hello,
I've been trying to repair Side-by-Side 26 cu. ft. Frigidaire refrigeratormodel number FRS266ZDSB4 and yesterday I installed a 3 in 1 Start (SupcoRCO210 for 1/2 HP compressor) and this is what I did:
I placed the ammeter on the white wire (Start compressor terminal) and thenI plugged the unit in, the amperage on the white wire read 8.10A and thecompressor worked for about 2 seconds and shut off leaving only at .10 A withthe fan on. After a few minutes I tried again the same procedure and this timethe compressor did not run at all and the ammeter showed .12 A and only the fancame on. What could be happening? I checked the compressor terminals and thewindings appear to be in good shape: Common 9.6ohm, Start 5.9ohm, and Run 4.1ohm so Ibelieve the compressor could not be the problem, but I think that there might be an electricissue that is hindering the compressor from working normally? Please advise.
Thank you very much in advance for your reply!
Miguel
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