First my simple set up,
One LV2424 connected to four 24V bigbattery connected in parallel, connect to solar input and grid input and output.
I have been working at this issue for over 2 month now, I thought it was a bad inverter, now I am not so sure. This setup has been running fine for over a year, then one day the inverter just turned off and won't turn back on.
I contacted the manufacture in China and replaced the mainboard, then the control board and then finally the mptt board. None of those resolve the issue. I then went ahead and bought a Growatt 3000 just to test. Same issue, Growatt turned on for a few seconds and showing 16.4V reading on the front panel then it turned off and now it won't turn back on.
Next I troubleshot the battery. However all batteries reads around 26.4V(LED reading on the battery itself), also measured it using a multimeter. Contacted big battery, they suggest resetting BMS.
1. I tried connect each battery individually to the unit
2. I tried resetting the BMS of the battery by disconnect them over 12 hours and connect them back on.
Finally, I took the multimeter and measured at the ring terminal connected to the inverter, the reading is at 8.7V. Why so low?
I am pretty sure it is not inverter at this point, can all four batteries be bad, can the LED display be bad and misleading? What should I troubleshoot next?
One LV2424 connected to four 24V bigbattery connected in parallel, connect to solar input and grid input and output.
I have been working at this issue for over 2 month now, I thought it was a bad inverter, now I am not so sure. This setup has been running fine for over a year, then one day the inverter just turned off and won't turn back on.
I contacted the manufacture in China and replaced the mainboard, then the control board and then finally the mptt board. None of those resolve the issue. I then went ahead and bought a Growatt 3000 just to test. Same issue, Growatt turned on for a few seconds and showing 16.4V reading on the front panel then it turned off and now it won't turn back on.
Next I troubleshot the battery. However all batteries reads around 26.4V(LED reading on the battery itself), also measured it using a multimeter. Contacted big battery, they suggest resetting BMS.
1. I tried connect each battery individually to the unit
2. I tried resetting the BMS of the battery by disconnect them over 12 hours and connect them back on.
Finally, I took the multimeter and measured at the ring terminal connected to the inverter, the reading is at 8.7V. Why so low?
I am pretty sure it is not inverter at this point, can all four batteries be bad, can the LED display be bad and misleading? What should I troubleshoot next?