miki1986

anyone have problem with communication with inverter Axpert Max I 11KW to JK Inverter BMS? I set inverter to PLY and bms to pylontech but have error 61 no comm, if I set inverter to LIB and bms to voltronic protocol I have comm but give error 70 and goes to bypass mode and batt voltage is not correct on inverter display, inverter has 73.78 firmware

I want to try factory firmware 73.78 but cant find it, last zip file that @Coulomb posted have file VP5K_original.inv is this it?

Does anyone had this issue? The inverter is axpert max 11kw with removable display non twin, and the problem I have is when the inverter is set to SUB it has problem tracking MPP, panel voltage is everywhere going down to 90v and up to 400v and current is kept at max most the time, but when I change to SBU everything is working as it should and charging with max power. The problem became apparent when I added second string of panels, both strings are matched voltage, and if I disconnect the new string problem is still there. This problem was on firmware 373.63 and I updated to 73.06 but problem remains.

Is it possible to edit this firmware to raise the lower limit of pv voltage to 200v? Because on cloudy day I still have "stuck" at 100 to 150v, it ramps up the amps to 3amp and pv voltage drip to 100-150v and it stays there, when I disconnect and reconnect pv voltage goes up to 320v and amp's around 2-2.5v and I get double the power, but after some time goes back to 100-150v.

I have update the firmware to the Coulomb's firmware 273.63, and it looks like is doing much better Thanks @Coulomb

My display FW is 12.13, did you meant U2 will stay the same FW 12.13 and U1 will show 273.63?

If you find time to adjust fw 73.63 that would be great. Mpp solar "This update is applicable only to “11K MAX” MPP solar inverters to address MPPT freeze issue found on some units due to the chip performance variation." Is it possible mpp solar fix this freeze issue? Or mine is different problem?

Hi, I am new to this forum, I have axpert max 11kw with the removable display, I have a problem early in the morning and on cloudy days the panel's voltage stay at 90v-100v until the sun shines clear and the voltage goes to normal panel voltag I was wondering if this FW will work on my inverter? and MPP Solar has an FW update for this model 73.63, my factory firmware is 73.03 and 12.13 for display