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I have had two compressors this week that would not start. I usually place a 3n1 on them to test them and then replace the OEM start device. On these two, one a frigidaire and the other a Jenn-air, the OEM parts would not start the compressors. I ended up leaving the 3n1 kits on them. Is this the only option short of replacing the compressors? I don’t do sealed system work. Thank you in advance.

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when a compressor starts getting hard to start one of the first things to fail is the starting devices, relay and overload.
By adding a 3-in-1, you are adding a start capacitor to the starting package so it gives the compressor a boost when it starts. The addition of a start capacitor will shorten the life of the compressor so this would be considered a Band-Aid fix. This happens to be contrary to what some will say but this is the exact reason that manufacturers do not want anyone using 3-in-1s on their compressors.

I personally would not offer any type of a guarantee on one of these repairs. I have used 3-in-1s to get hard starting compressors going to save the customer’s food just to get them over the hump and have had them fail within a few minutes and then have others that have ran for years. You never know how much time the compressor is going to last.

Be sure to explain to the customer that the compressor could fail at any point and they need to start planning on a replacement and they may need to replace it at any time in the future.

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i like using the urco410 on units that have run caps because you can wire the run cap in with it.

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The Rco410 3n1 kits are okay to leave on the compressor. We called Supco and got the specifications on this relay, overload, capacitor. Its just a rumor started by other manufactures that they harm or damage compressors, completely not true. Our 14 full time technicians leave these on all of our units they are 100% safe to use.

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