Hi i have 2x Kodak OG5.6kw inverters in parallel connected to 3x pylontech up5000 batteries and each inverter has 10x 460w solar panels connected to them all panels in series,

I have a proplem every now and then the screens on both inverters goes bland and then both of them loose some of their settings like eg setting number 13 i set to '51V' and then after the fault has occurred setting number 13 will be set to 'FULL' and setting number '20' i set to 'LON' and after the fault its set to 'LOF' on both the inverters and it happens randomly atleast 3 times a week

i have run them one at a time for days without any problems and without the fault occurring but when they are used together it happens

i have swapped the parallel cables with new cables -Did not help

i have updated the firmware on both inverters to the same firmware = Did not help

i have swopped my batteries around making another pylontech the master - Did not help

i plugged in the bms communication cable to both inverters and did settings accordingly - still the same

i really cant understand where the problem is coming from how will i know which one is causing this or is it both inverter

Edited August 18, 20251 yr by RoTGoT66

On 2025/08/11 at 7:09 PM, RoTGoT66 said:

i have 2x Kodak OG5.6kw inverters in parallel

You haven't mentioned paralleling boards or cables. Are you using these? Some models have paralleling boards built in, or at least come installed from the factory. Without these boards and cables, the inverters can't co-ordinate properly.

Also, some models aren't designed to be paralleled at all, e.g. the VM series. Please post your main (U1) firmware version so I can tell exactly what model these Kodak branded inverters are.

Sorry for the late reply.

These are the 2 inverters, they both had parallel boards installed from the factory and i am using the 2x grey parallel cables that came with the inverters and also the 2x red/black current sharing cables that also came with the inverters

is this what you needed they seem to be both running the same firmware,

Yes. sorry for the painfully late reply.

It sounds like actually you may need the "capacitor mod", either do it yourself if you can do it safely, or get someone to do it.

There is a small chance that it's firmware related. Here is the latest firmware in case you want to try it. 52.10 is about 8 months more recent than 52.00. Your Kodak seems to be a rebadge of an Axpert MKS IV.

This is main (U1) factory firmware version 52.10 for the Axpert MKS IV 5.6kW '28066 Non-twin. Do not use with any other model or version.

Use at your own risk. The hex file is dated 10/07/2024.

Firmware upload instructions for models with a colour display.

This firmware processes the QDOP command, so with suitably recent display firmware, it should support SoC% for settings 12,13, and 29 when connected to a suitable battery's BMS.

The RAR file password is "flash", without the quotes.

MKSIV_Inverter_Main_Reflash_Ver52.10 pw flash.rar