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Old 07-19-15, 06:17 PM   #3
Elcam84
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Join Date: Jun 2013
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I wish I could find the link for it. Was pretty interesting. One thing I did learn on the first 3 wire 220v minisplits I installed was that he communication wire does not carry all he communication. It I'd Aldo carried on one of the hog legs. So if they don't talk to each other swap the hot legs and try that.

Also the caps in he power supplies are prone to going bad. Usually cheap brand caps and too low temp rated. Regardless of machine brand. Even the high end units are known to cheap out on caps especially since they are big and numerous on a 380v dc supply.
Luckily I also have a spare power supply for it as well.
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