Hey guys,
I have the EG4 18kpv inverter with latest firmware (LCD version 11) and 6x LifePower 4 batteries in a rack hooked up to the inverter. Also running the latest firmware.
I have a grid-tie setup with the backfeed breaker approach. In other words, the inverter will supply power to the main panel from either solar or batteries.
During the day the system will charge the batteries from solar, and use a combination of Solar / Battery to feed the loads in my house, with the grid providing whatever is needed on top of that. Everything works perfectly during the day and the batteries always get topped off.
At night, I have it setup to "Forced Discharge" starting at 19:00 (7 PM) so that it uses my batteries to power the loads (with a stop time at 23:59 and another one after that). My time is properly synched. The batteries are always fully charged. But it never uses batteries. As soon as there is no solar available from the panels it just uses all grid power for the loads (so the inverter is not doing anything since it's just showing me the grid/panel box interaction based on CTs).
When I click on "Debug" and select "Why are batteries not discharging" I get "Waiting to qualify Grid Voltage, FQ, ISO etc" as a hint. See screenshot. The odd thing is that once in a while it does tap the batteries for a few minutes and then randomly goes back to using the grid. Btw, I took that screenshot before upgrading firmware but the message is the same after it.
Any ideas?
Thanks!
I have the EG4 18kpv inverter with latest firmware (LCD version 11) and 6x LifePower 4 batteries in a rack hooked up to the inverter. Also running the latest firmware.
I have a grid-tie setup with the backfeed breaker approach. In other words, the inverter will supply power to the main panel from either solar or batteries.
During the day the system will charge the batteries from solar, and use a combination of Solar / Battery to feed the loads in my house, with the grid providing whatever is needed on top of that. Everything works perfectly during the day and the batteries always get topped off.
At night, I have it setup to "Forced Discharge" starting at 19:00 (7 PM) so that it uses my batteries to power the loads (with a stop time at 23:59 and another one after that). My time is properly synched. The batteries are always fully charged. But it never uses batteries. As soon as there is no solar available from the panels it just uses all grid power for the loads (so the inverter is not doing anything since it's just showing me the grid/panel box interaction based on CTs).
When I click on "Debug" and select "Why are batteries not discharging" I get "Waiting to qualify Grid Voltage, FQ, ISO etc" as a hint. See screenshot. The odd thing is that once in a while it does tap the batteries for a few minutes and then randomly goes back to using the grid. Btw, I took that screenshot before upgrading firmware but the message is the same after it.
Any ideas?
Thanks!
Attachments
Last edited: