Question about Tripp Lite Lite SmartOnLine SUINT3000RTXL3U UPS System
I would like you to go to this site where they replaced a capacitor. Notice they have the same problem as you except they have a RS system, and I believe yours' is a smart.
Next, go to the buttom of this link, where it is suspected a resistor problem but, doing the same undesired fault.
Go to these two links, I hope it may help you. If you have any question please let me know. I have a B.S. in Electro- Mech Engineering and would be glad to help inform you with these matters. I really hate sending you to these site, because we're not suppose to just leave you out there. But, I will give you special instructions afterward if you need it.
Also, be careful to know that meter readings may look different but, it may be the same. It depends on how the meter makes such a reading. Some sample and hold, some may be giving the reading indirectly and some do a approx answer. Hope this helps.
Posted on Sep 24, 2009
I don't think the circuit is the problem. You probably need to recalibrate the control board. The calibration procedure is in the service manual. Unfortunately, I misplaced the Tripp-Lite UPS service manuals. I remember hooking up the serial port to the PC and enter a key sequence to get to the service menu. If I find the service manual, I will post the procedure. Or you could just order one from APC.
Posted on Sep 26, 2009
I know that you tried and it is hard to get it without opening one...did you try to reset the unit or test it in another location? if the batteries are good and new it may be the software...just an idea...let me know
Posted on Sep 25, 2009
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Posted on Jan 02, 2017
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