Good morning

My parents are running 2x 8kva Kodak inverters. However, the one inverter keeps on giving a PV Overload error and then shuts off the inverter.
Can anyone please recommend what could be causing this issue and how we would go about fixing it?

Thank you.

How many panels are connected to that inverter? what type and rating are they? How are they connected (series / parrallel etc)

1 hour ago, mzezman said:

How many panels are connected to that inverter? what type and rating are they? How are they connected (series / parrallel etc)

8 panels per string. 565W mounted in series.

1 hour ago, mzezman said:

How many panels are connected to that inverter? what type and rating are they? How are they connected (series / parrallel etc)

1 hour ago, mzezman said:

How many panels are connected to that inverter? what type and rating are they? How are they connected (series / parrallel etc)

According to the specs the panels are 50,28VOC and the MPPT string works between 90-450 with a 500VDC.

27 minutes ago, Tiaan Vermeulen said:

  1 hour ago, mzezman said:

How many panels are connected to that inverter? what type and rating are they? How are they connected (series / parrallel etc)

PV overload sounds like a current issue. Not a voltage one. I am not familiar with Kodak inverters, but I am pretty sure the voltage would be labelled differently.

What is the maximum current the MPPT on the inverters can accept? And what is your current output from the panels?

Edited November 7, 2025Nov 7 by Denns

14 minutes ago, Denns said:

PV overload sounds like a current issue. Not a voltage one. I am not familiar with Kodak inverters, but I am pretty sure the voltage would be labelled differently.

What is the maximum current the MPPT on the inverters can accept? And what is your current output from the panels?

14 minutes ago, Denns said:

PV overload sounds like a current issue. Not a voltage one. I am not familiar with Kodak inverters, but I am pretty sure the voltage would be labelled differently.

What is the maximum current the MPPT on the inverters can accept? And what is your current output from the panels?

This is where my electrical expertise runs out. I have not idea where to read or measure that. :-(
This is the KODAK specs - I think page 9 is what we are looking for?
This is the JA Solar Panel specs.
Does this help?

16 minutes ago, Tiaan Vermeulen said:

This is where my electrical expertise runs out. I have not idea where to read or measure that. :-(
This is the KODAK specs - I think page 9 is what we are looking for?
This is the JA Solar Panel specs.
Does this help?

You are within spec on both the voltage and current, so I leave this to the others. I am not sure what else it could be. Is the inverter still under warranty? Could send the one in that is giving the issues and they still have the other to keep the house on solar.

55 minutes ago, tony Lampard said:

"This voltage can increase in cold weather" so lets say your panels maxed at 58v. 8 x 58 = overload. If you measure the pv voltage when "Overload" it will at least eliminate that aspect if its something else. sometimes its just a loose connection.

There is a specific calculation method to work out the Voc at low temps based on the panel temperature coefficient, it's unlikely to shoot upto 58v, especially in summer.

The panel specs datasheet will have this info, 8 x panels in series should be fine on the voltage side.

@Tiaan Vermeulen how many strings per inverter? Are there only 8 on one string on each inverter?

In the manual there are two separate fault codes mentioned, check which one it is.

10 - PV over current

11 - PV over voltage

Also suggest to install solar assistant and connect usb cables to each inverter, really worth it for troubleshooting. And the monitoring features is gold for these voltronic inverters.

3 hours ago, abd7 said:

There is a specific calculation method to work out the Voc at low temps based on the panel

Based on the spec sheet of the JA 600w solar panel this is the formula to calculate Voc rise as temperatures drops.

Plug this formula into an excel sheet and you have a VOC temp Coefficient converting tool.

=A1 (1 + (A2/100) (A3 - 25))

Where A1= Voc @25°C , B= Coefficient %/°C, C=(New VOC)

50.28 * 1.09625 = 55.12 V x 8 = 440.96v

@Tiaan Vermeulen your Voc @minus 10°C would be 440.96v for one 8S1P string. The problem is definitely not the VOC you might have a hardware problem on the one inverter Mppt.