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After 11mo. of near faultless operation, I decided to add another SPF 3000TL LMV-ES. Set it up in parallel split phase. Took the two PV strings that I had going to the one unit and connected so as to have one string to one and the other to the other. Runs good, split phase works, no faults or...

Was the problem resolved? How?

May still be of benefit to watch this video, from Signature Solar, on Growatt settings. There are a few pointers that apply to all set-ups.

PV Off-grid Inverter is a SPF 3000TL LVM-ES In the settings section, I wish to use a range outside of the normal settable range for the inverter. Here is my situation. Setting/Program 13, Setting voltage point back to battery mode when selecting "SBU priority" or "Solar First" in program 01...

The posting is a few weeks old now, not sure if you found your solution, however I have a similar setup, and I plan on using a Interlinked breaker box to transfer the Utility input of Growatt from Utility to Portable Gas Generator.

I agree, not sure where I was going either.

Have not taken into account. Will review the resources and adjust. thankyou. It still my be ok because the Maximum Power Voltage Vmpp=40.7V and Electrical Data (NMOT) off of spec sheet has Voc=46.6 [46.6 x 5 = 233] Still not much room for voltage rise though.

The System: Inverter: Growatt SPF 3000TL LVM-ES, max PV input voltage(VOC) 250VDC Panels: 410watt, VOC=49.4V, Short Circuit Current=10.59A Distance from array to inverter=30 ft Currently have 5 panels in series for about 226V on a sunny day, read at Growatt Inverter. Also read at Inverter...