I don’t know if you can get any help from OB. Have you tried Zonna? And yes the boards have been a weak link in that design.
Is this a 8048 or a 8048A? > On May 7, 2025, at 10:46 AM, Drake Chamberlin via RE-wrenches > <[email protected]> wrote: > > > The issue was the Radian 8048 disconnected from the grid on an incorrect high > voltage reading. Remaking the connection to the ribbon cables seemed to solve > the problem...temporarily. > > After about a week, the problem came back. This time I treated the all the > contacts with the antioxidant that comes in the small tubes. All seemed well > for a while, then the problem returned, and is no longer intermittent. > > Wiggling the cable connections made no difference. > > I took a close up photo of the control module as suggested, and can see no > broken solder joints. > > <4b443fa4.png> > > I tried turning off the power modules, one at a time, but no difference. I > have checked all the settings, then did a factory reset on the unit. I had an > extra ribbon cable, so was able to swap cables around. The problem did not > change. > > Does this seem like a defective control module with no solution other than > replacing it? > > Thanks, > > Drake > > > > Drake Chamberlin > > Athens Electric LLC > > Ohio Electrical Contractor’s License 44810 > > NABCEP Certified PV Installation Professional > > --- > > > >> On 2025-04-09 13:04, [email protected] wrote: >> >> For a followup, it appears that the problem was in a ribbon cable >> connection. After checking the power wiring and starting the inverter again, >> the problem still remained. >> >> Then, I disconnected and reconnected the ribbon cables at both ends. On >> restart, the voltage was with 6 V of the multi meter reading. I adjusted >> this out with the offset in the calibration menu. The voltage has read >> steady for a day now. >> >> Thank you! >> >> Drake >> >> Drake Chamberlin >> Athens Electric LLC >> OH Electrical Contractor License 44810 >> NABCEP Certified Solar PV Installation Professional >> 740-856-9648 >> >> >> --- > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
