Dan:
Our early XW systems performed very poorly on sell-back. Updating firmware improved the situation. Updating firmware was painful. It required most of a day for one system. It’s been a while but I posted a list of tips to this forum. I seem to recall the dongle needs AC and off-grid systems shut down while upgrading, making off-grid upgrades a logistic problem. Bring a table for your gear, the dongle, a headset for the long conversations you will have with tech support and your lunch. William [image: Gradient Cap_mini] Lic 773985 millersolar.com <http://www.millersolar.com/> 805-438-5600 *From:* RE-wrenches [mailto:[email protected]] *On Behalf Of *Dan Fink *Sent:* Monday, July 18, 2016 3:56 PM *To:* RE-wrenches <[email protected]> *Subject:* [RE-wrenches] Conext XW+ always feeding critical loads subpanel from battery bank Installer went out of business, all I have to troubleshoot with is an as-built 3-line that "may or may not be right." The charge controllers are a pair Midnite Classic 200s. Customer complained that system selling only 2/3 of what was predicted back to the utility; that appears to be because everything out of his critical loads subpanel is running off the battery bank all night, every night, grid or no, so it takes 1/3 of the day to get the batteries charged up again every day and start selling to the grid. I have very little experience with the XW+ thus my question for the folks here. My plan for next week is to show up, make my own as-built 3-line, and recommission the inverter. Anyone else seen this sort of thing before? Hard to believe that an electrician would mis-wire or not wire the bypass, I'm thinking software setting. Dan Fink Adjunct Professor of Solar Energy Technology, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer Executive Director, Buckville Energy NABCEP Registered Continuing Education Providers™ 970.672.4342
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