The log in non volatile memory (if excessive) would show under events (current and historical) in Gateway for the CSW40408. It might also be in SCP for the device by scrolling down to view device info, enter, faults and warnings. There will be dates and fault and warning numbers.
If this all worked at one time, I would suspect the genset has drifted off frequency. Needs to be close to 60 hertz and then when qualified it will follow the gen frequency. As others have said maybe they are loading it differently. A basic gen problem with small sets. Often the easy fix is to tell them when they start the gen to reduce all discretionary loads for the first hour or two to charge batteries. Then bring loads on like kitchen and laundry. There are a bunch of other advanced ways to to program charging. All of this seems to disappear with a quality genset from the usual suspects. Many of my clients live in places where they do not need the beast! None here for 20 years! If the gen is toast, a nice 2- 3kw gen can be run into L1 and charge from a 120vac source. Good Luck! Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail offgridso...@sti.net [2] text 209 813 0060 On Tue, 15 Dec 2020 14:17:23 -0500, Dave Tedeyan wrote: From what I understand, they have had the system for a little over a year, and have not done any maintenance on the generator. I was also more suspicious of the generator, and was going to try turning down the charging amps to see if the generator will work better not being so loaded. Dave, do you know if the Conext will log an error if the relays have actually been damaged? I am hoping that there will be something in the error logs that will help identify whether there is an inverter issue now, or whether the issue lies with the generator input. Thanks! -Dave DAVE TEDEYAN, PE Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. 607.277.1118 x121 f. 607.277.2119 www.taitem.com [3] Solar * Sustainability * Energy * Design Certified B-Corporation since 2013 On Tue, Dec 15, 2020 at 2:01 PM jay wrote: HI Dave, Have them turn down the AC input and see if that fixes it. Sounds like a classic generator issue. As to why? When did they last change the oil, air filter, fuel filter, spark plug, adjust the valve or some electronic issue with the generator. jay peltz power On Dec 15, 2020, at 11:14 AM, Dave Tedeyan wrote: Hi All, I am going to service a system where the homeowner is telling me that their Conext SW4048 had been working fine for 14 months, and then all of a sudden recently stopped being able to charge the batteries from the generator. It is an off grid system. The inverter would start charging the batteries, but then about a minute later they would hear a relay click and the charging would stop. Then it would just keep cycling. If they turned everything off for a while, they could then turn it back on and charge for maybe 10 minutes before it would start cycling. They just have a crappy 4kw generator from Harbor Freight. I have not laid my own eyes on it yet, but will be there in the next day or two. Just wondering if anyone has experienced these symptoms and have a good idea of what to look for first. Thanks! -Dave DAVE TEDEYAN, PE Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. 607.277.1118 x121 f. 607.277.2119 www.taitem.com [6] Solar * Sustainability * Energy * Design Certified B-Corporation since 2013 _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [7] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [8] There are two list archives for searching. 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