SignatureSolarJames
Try Solar, the Grid will always take you back
We are releasing a firmware update on our website and here in this post that resolves the flickering light issue on the most recent batch of EG4 6000 and 6500 inverters.
- Who does this affect: people with EG4 6k and 6.5k units Shipped after November first who are experiencing lights flickering when PV is charging the battery (these units only have gray larger terminals, not all gray terminal units have this issue though)
- Who this does not affect: People buying new units today (full reflash and usb cable packed in for future use. People with units that have black terminals, people with gray terminals that have not experienced light strobing/major flicker.
- What happened: An unauthorized minor component hardware change was made at the Voltronic factory on the standard 6500 and 6000w rectifiers inside the All-in-one inverters; We use the same factory as MPP solar, Sungold, Rich Solar, and other 6000/6500 units, Our units are specced with exclusive money-saving added features but this issue came down to Rectifier management; the firmware starved the rectifier by not allowing battery power to be prioritized on a board level. This caused the rectifier in PV charge and some grid circumstances to shift frequency slightly and make lights flicker.
- What we did: Around late November/December we started receiving units with this issue from the factory, we did not detect this use case in our standard Quality control check (a lot of points have been added for future units). When we began receiving units back with the issue we tried to get support from the factory but the team was in full denial of the issue, after a week as well as seeing that this issue was popping up with other high-volume Voltronic OEMs that weren’t sitting on old stock. We dispatched our lead engineering team to Taiwan and they took over the situation this week, yielding this firmware.
- What we did wrong: We too too long to recognize the issue as new and rush the inverters back, our warrnty dept insisted that procedure was followed on information gathering before a claim went through, on several occasions this just ended up in a hard headed gridlock where customers with legit issues were charged back
- What we will do better:
- Quicker response and recognition, this is an agenda setter for us going forward aand new tools and procedures too catch this are being set up
- Additional air tightness added to our quality contracts enforced on future production
- More points added to batch quality test
- All units are being reflashed before shipment and all units will have an update cable packked in (no other voltronic oems on this yet I think)
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