Posted February 14, 20223 yr This is at 10h30 in the morning. Battery is mostly full and I have the kettle on. The MPPT2 is simply just not supplying anything, and instead the inverter is taking the balance from the grid. SETUP: MPPT1 is 6 x JA Solar 455W panels MPPT2 is 3 x JA Solar 455W panels (waiting for bracket to fit the remaining 3) Inverter is a 5kW SunSynk Why would it not be drawing more from the second string? The panels are all next to each other on the same roof facing North at 35deg (roof pitch) no shading etc. What say you experts?
February 14, 20223 yr With only 3 of those panels on a string the voltage is probably just too low to get the mppt to start up and produce power. *Edit , yea i just checked ,you neet 150v to start up the MPPT. Edited February 14, 20223 yr by Nexuss
February 14, 20223 yr Author 1 hour ago, Nexuss said: With only 3 of those panels on a string the voltage is probably just too low to get the mppt to start up and produce power. *Edit , yea i just checked ,you neet 150v to start up the MPPT. Ah yes! That's spot on! SOLVED! Thank you. It's under the 150V requirement. Occassionally it went up to maybe 300W, but it must have been the panels going over their 47.x Volts temporarily. THANKS.
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