Hi there, I have a growatt SPF 5000ES, with 8 AGM Batteries and 3 x 450 Watt JA panels, now on the Inverter it says MPPT voltage range 120 - 430 VDC and reading off the front panel display of the inverter it says it has 137 VDC from the PV , yet it is neither supplying power to the load or charging the batteries.. I ran through the standard settings and maybe I missed something ??? Anyone have any ideas or do I simply need some more Panels to boost the voltage. Many thanks in Advance

2 minutes ago, Steve W said:

Hi there, I have a growatt SPF 5000ES, with 8 AGM Batteries and 3 x 450 Watt JA panels, now on the Inverter it says MPPT voltage range 120 - 430 VDC and reading off the front panel display of the inverter it says it has 137 VDC from the PV , yet it is neither supplying power to the load or charging the batteries.. I ran through the standard settings and maybe I missed something ??? Anyone have any ideas or do I simply need some more Panels to boost the voltage. Many thanks in Advance

Let's hear from other members that know the Growatt inverter. 

My call will be that it's voltage related. 137V is thus Voc. The moment the MPPT tries to operate the voltage sags to below 120V and it fails to operate. Also have a look at what the starting voltage is for the MPPT. It might be higher than the 137V.

@zsde

33 minutes ago, Scorp007 said:

look at what the starting voltage

The start up voltage is 150V + or - 10V. So the voltage to kick it off may be one panel too few.

Edited August 2, 20232 yr by zsde

Thank you, I was suspecting that but wanted to make 100% sure