So here we go again 🤣 I have a 48v Axper King rack 5kw. I just replaced the batteries with DC Solar DC-L5000/LV x 2.  I have a total of 9 x 400w panels. It took a while to find out that the original communication board would not talk with my new batteries. So the shop switched my old board for a new board that can talk with the batteries. After that everything looked to be working perfectly.

 

 I have had this situation before where the inverter would just suddenly not show the solar panels. (I will attach picture and videos if I can). I thought it was because the old batteries were fudged and the voltage would spike when lots of power is coming in causing a fail safe to switch. ( no alarm code or noise) normally at night when the power stops the unit beeps loudly to say no more power from the panels and switching fully to batteries, it does the same thing in the morning once power starts coming in. 

 

now I am having the panels cut out lots today,  before It was only if I used something high powered and it stopped or started and the voltage spiked. 
 

What can I use to insert videos and pictures? Please and thanks I have videos showing exactly what’s going on 🙏🙏

1 hour ago, Glasshopperus said:

So here we go again 🤣 I have a 48v Axper King rack 5kw. I just replaced the batteries with DC Solar DC-L5000/LV x 2.  I have a total of 9 x 400w panels. It took a while to find out that the original communication board would not talk with my new batteries. So the shop switched my old board for a new board that can talk with the batteries. After that everything looked to be working perfectly.

 

 I have had this situation before where the inverter would just suddenly not show the solar panels. (I will attach picture and videos if I can). I thought it was because the old batteries were fudged and the voltage would spike when lots of power is coming in causing a fail safe to switch. ( no alarm code or noise) normally at night when the power stops the unit beeps loudly to say no more power from the panels and switching fully to batteries, it does the same thing in the morning once power starts coming in. 

 

now I am having the panels cut out lots today,  before It was only if I used something high powered and it stopped or started and the voltage spiked. 
 

What can I use to insert videos and pictures? Please and thanks I have videos showing exactly what’s going on 🙏🙏

2 point2 How are your panels connected-like in per series string and then number of parallel strings? 

Normally one would save the videos where one can upload like YouTube and then just supply the links. 

Some sites allow you to host the videos and then link it to the videos. 

Edited December 10, 20232 yr by Scorp007

I will upload to YouTube and try to insert the links. I have my panels set up as  3 set of 3 x 400w solar panels. It’s the configuration Autosolar recommended 

This is a video of it as it happens 

 

 

There is something strange with that pair of battery modules. At one point in the video, one was at 54.x V and the other at 55.x volts. Also, they don't share the current, one is always showing zero.

Is one of them showing a fault LED? Maybe cycle the power on that battery module?

What is your main (U1) firmware version? Some models, I think early Kings, possibly including the rack mounted versions, had a firmware fault where if the BMS told the inverter to stop charging, the panels would be shut off (forgetting that a big job of panels is to support the load). This was fixed in later firmwares.

Edited December 11, 20232 yr by Coulomb

2 minutes ago, Coulomb said:

There is something strange with that pair of batteries. At one point in the video, one was at 54.x V and the other at 55.x volts. Also, they don't share the current, one is always showing zero.

Is one of them showing a fault LED? Maybe cycle the power on that battery module?

What is your main (U1) firmware version? Some models, I think early Kings, possibly including the rack mounted versions, had a firmware fault where if the BMS told the inverter to stop charging, the panels would be shut off (forgetting that a big job of panels is to support the load). This was fixed in later firmwares.

Auto Solar had to change the communication board so my inverter would talk with Other lithium batteries. When they are charging in the morning they seam to charge evenly. Also at night when they discharge it seams to be even. Once the batteries are full during the day and I try to use the system. They don’t seam to talk to each other correctly and pull and charge from the second battery which spikes the voltage on it in comparison to the primary. Then the panels shut off for a time then turn back on, it starts to dump amps into the second battery. And click the panels go again.  I am trying desperately to talk with technical help at auto solar. But they apparently have 4 techs for all of Spain 🤦‍♂️

22 hours ago, Glasshopperus said:

They don’t seam to talk to each other correctly and pull and charge from the second battery which spikes the voltage on it in comparison to the primary. Then the panels shut off for a time then turn back on, it starts to dump amps into the second battery. And click the panels go again.

There definitely seems to be something strange going on with the BMS comms... the inverter is trying to push charge into the batteries even though they are both at 100% SOC. If comms was working, one would expect the inverter to go to float and not keep trying to charge. Have you tried removing the comms cables and running the batteries in USEr mode on the inverter? If that alleviates the problem then you know it is definitely a communication issue.

58 minutes ago, jumper said:

There definitely seems to be something strange going on with the BMS comms... the inverter is trying to push charge into the batteries even though they are both at 100% SOC. If comms was working, one would expect the inverter to go to float and not keep trying to charge. Have you tried removing the comms cables and running the batteries in USEr mode on the inverter? If that alleviates the problem then you know it is definitely a communication issue.

I have not tried to do that since they put the new communication card in. When we tried  any other settings it gave me fault code 61. That’s the problem the “new” communication board “fixed” 

31 minutes ago, Glasshopperus said:

When we tried  any other settings it gave me fault code 61.

You should not get warning code 61 if the battery type is set to USE, as far as I know.

2 minutes ago, Coulomb said:

You should not get warning code 61 if the battery type is set to USE, as far as I know.

I went through the setting with AutoSolar (largest solar company in Spain) and my inverter just wouldn’t talk with or work with the batteries before they put the new communication card in. I am 99% sure it was error code 61. 

19 hours ago, Glasshopperus said:

I went through the setting with AutoSolar (largest solar company in Spain) and my inverter just wouldn’t talk with or work with the batteries before they put the new communication card in. I am 99% sure it was error code 61. 

@Coulomb is correct, error 61 is BMS comms error and you will only get it if you are on PYL, Lib or Lic settings, you won't get it when set to USE battery type and set the voltages. That way you can at least know if it is the BMS comms causing the issue or not.

It might be that the new comms board doesn't give error 61 because it connects to the BMS, but there might be an error in the protocol implementation when the battery reaches 100% causing your issue.

23 hours ago, Glasshopperus said:

I went through the setting with AutoSolar (largest solar company in Spain) and my inverter just wouldn’t talk with or work with the batteries before they put the new communication card in. I am 99% sure it was error code 61. 

Could it maybe be warning 69 and not error 61?

Kings used to show warning 69 on some firmware versions if the battery is fully charged and the inverter still tries to push charge into it.

Are the batteries properly chained and configured? It is very strange that they show different voltages. There are some dip-switches that you need to configure to set master and slave batteries. Dip-4 off for master and dip-3 off for slave. I cannot see it clearly on the video, but they all seem to be on for both batteries.

It is also necessary to configure communications on the battery to match the Axpert King protocol as described in the user manual.

Update! 
 

ok so it turns out the communication cable was supposed to come out of the master battery’s CAN/RS485 and go into the inverters BMS. I had it set from the secondary battery to the inverter. That has taken care of the batteries not talking to each other and charging/discharging differently. 
 

however 🤣…… when the batteries are full and in float.

I should preface with. I’ve been reducing my consumption to as minimal as possible for some time, trying to extend the life of my old batteries. so while testing I only had the fridge freezer running and  when the compressor is not running it uses maybe 12w .5amps.

So when the batteries reached float the inverter turned off the solar panels. I have no idea why. I imagine a safety setting or something.  But the inverter stops showing the panels and start to pull from just the batteries. As soon as the power consumption goes above say the 12w the inverter would sort of go, Oh I have solar panels why don’t I use them and connect back draw power recharge the batteries back up and then shut the solar panels off. 
 

my work around fix is. I need to leave something on that constantly pulls at least 100w, so that when the batteries reach float. the inverter keeps the panels on, to power the 100w. The inverter then leaves the batteries in float.
 

So all afternoon the kids had there TV’s on and the PlayStation the panels didn’t disconnect once nor did the batteries. discharge or charge, but stayed @ 100% protected.

As soon as they turned their TV’s and PlayStation off and it was just the fridge again. The inverter turned off the connection to the solar panels.
 

in conclusion until I can figure out what setting it is. I will just leave the ceiling fans on so that when the batteries are at float the inverter won’t say, ok batteries full, no power being drawn, turn off-panels. 
 

 

ok first problem was the communication cable. It was supposed to go out from the master battery to the inverter. I had it set from the slave battery to the inverter.
 

This seams to have taken care of the batteries having different voltage and they now charge and discharge more or less equally within 3% 

the problem of the inverter turning the solar panels off still happens. So what I have managed to work out is. Once the batteries are at float the inverter for some reason shuts off the panels. And only turns them back on once the batteries start to have a draw (this can take several minutes).
 

So my work around is. I leave the ceiling fans on enough so I have at least a constant 100w draw. (When testing I only had the fridge freezer plugged in and when the compressor is not running it draws next to nothing.) but if I have something that is giving a constant slight pull. The inverter will show the batteries in float and not turn off the solar panels. 
so yesterday I was able to keep the system in float and running no problems all afternoon once the sun went down the batteries discharged as normal. Once the sun rose they started to charge again as normal until float. So I can only assume there is some setting that says.

Ok batteries full, no noticeable draw of power. turn of solar panels. 🤷‍♂️

11 hours ago, Mauritius B said:

Could it maybe be warning 69 and not error 61?

Kings used to show warning 69 on some firmware versions if the battery is fully charged and the inverter still tries to push charge into it.

Are the batteries properly chained and configured? It is very strange that they show different voltages. There are some dip-switches that you need to configure to set master and slave batteries. Dip-4 off for master and dip-3 off for slave. I cannot see it clearly on the video, but they all seem to be on for both batteries.

It is also necessary to configure communications on the battery to match the Axpert King protocol as described in the user manual.

I did have the communication cable coming out of the wrong battery to the inverter. I explain more in my update 🙏👊 the pins were correct also the set up for the battery 😁 phew 🤣

Edited December 13, 20232 yr by Glasshopperus

Can you read and share the config parameters of the inverter?

29 minutes ago, Mauritius B said:

Can you read and share the config parameters of the inverter?

I am sorry I don’t understand what exactly do you want to know ? 

12 hours ago, Glasshopperus said:

I am sorry I don’t understand what exactly do you want to know ? 

I mean that you enter in configuration menu of the inverter, take note of the values for each parameter and post them in here.

This is to understand what working modes/parameters are set on the inverter.

The setting are 

00 - ESC

01 - USB

02 - 50A

03 - LIb

06 - Ltd

07 - upside down Ftd

09 - 50hz

10 - AUt

11 - 2A

12 - 46v

13 - 54v 

16 - 5bL

18 - bon 

19 - ESP

20 - LON

22 - AOn

23 - bYE 

26 - C small floating u 56.0v

27 - FL small floating u 56.0v 

28 - 5IG missing the small line on the G 

29 - CO small floating u 45.0v

32 - AUt

33 - Ed5

34 - E small floating u 58.4

35 - 60 

37 - backward EOd

39 - Ad5

40 - large “n” then a “t” then a different small t 

41 - big UFd

42 - tId

43 - Pdd

93 - big “n” t 

94 - 10 

 

I hope that’s what you asked for 🤟

 

16 hours ago, Glasshopperus said:

The setting are 

00 - ESC

01 - USB - This should be SbU for solar first, then battery and last utility as supply priority. Now it is set as Utility-Solar-Battery.

02 - 50A

03 - LIb - I assume this is battery type as it is an old firmware version. Battery type should be shown on param. nr. 5

06 - Ltd

07 - upside down Ftd

09 - 50hz

10 - AUt

11 - 2A - This means that you have limited battery charging from grid to only 2 amps

12 - 46v

13 - 54v 

16 - 5bL - There should be 3 more letters on nr16. SbL + UCb or SbL + UdC. Which one do you have?

18 - bon 

19 - ESP

20 - LON

22 - AOn

23 - bYE - Bypass mode is enabled

26 - C small floating u 56.0v

27 - FL small floating u 56.0v 

28 - 5IG missing the small line on the G 

29 - CO small floating u 45.0v

32 - AUt

33 - Ed5

34 - E small floating u 58.4

35 - 60 

37 - backward EOd

39 - Ad5

40 - large “n” then a “t” then a different small t 

41 - big UFd

42 - tId

43 - Pdd

93 - big “n” t 

94 - 10 

 

I hope that’s what you asked for 🤟

 

Can you check the coments on the parameters above and share firmware version U1 as @Coulomb requested?

You should be able to see the firmware versions on inverter screen.

Edited December 15, 20232 yr by Mauritius B

5 hours ago, Mauritius B said:

Can you check the coments on the parameters above and share firmware version U1 as @Coulomb requested?

You should be able to see the firmware versions on inverter screen.

The only UI code I can find is UI 75 05 I’ve never got this inverter to connect to a app or computer so I only have the little led screen 

6 hours ago, Glasshopperus said:

The only UI code I can find is UI 75 05

Perfect! Now I may be able to help a little.

You could  try Axpert King Rack Mounted firmware version 75.08. They may have fixed the PV issue by then.

 

On 2023/12/14 at 9:18 PM, Coulomb said:

Perfect! Now I may be able to help a little.

You could  try Axpert King Rack Mounted firmware version 75.08. They may have fixed the PV issue by then.

 

Awsome thanks. I am away on work so obviously the unit stopped working two days after I left showing fault code 90. So my friend watching the house has had to turn everything off. I have however managed to get an old lap top with adobe and a rs232 port. So hopefully I will be able to download this update and update the inverter. My question is now how do I do that 🤣 when I plug in the inverter will the lap top just go new found hardware and an update is available, or will I have to more steps ? (I’ve never updated a inverter before) many thanks again 

 

On 2024/02/18 at 8:57 AM, Glasshopperus said:

I am away on work so obviously the unit stopped working two days after I left showing fault code 90.

Ah. Fault code 90 is a different case.

I've noticed a trend in some later firmware of not bothering to call the code that initiates fault code 90 (undocumented, but it essentially means stolen firmware detected). Alas. factory firmware version 75.08 for Rack Mounted Axpert Kings (August 2022) is not such a firmware. So updating to that firmware will not fix fault code 90, whether it is correct about stolen firmware or not.

Presuming that you don't have a clone (I've not heard of Rack Mounted clones, but anything is possible), you need to talk to your supplier about the issue. It may well be that the inverter somehow lost some data in its EEPROM; if that is the case, then they have to formulate a "setserial" program specific to your inverter's serial number, and running this program (follow the included instructions carefully) should fix that issue. But they might well have a more recent fimware that doesn't bother with fault code 90 any more (I get the feeling that Voltronic are giving up their fight with the clone manufacturers), and may simply issue a more recent firmware update, possibly fixing two issues at the same time.

On 2024/02/18 at 8:57 AM, Glasshopperus said:

when I plug in the inverter will the lap top just go new found hardware and an update is available, or will I have to more steps ?

There are a few steps, but the main one is to make sure that you have the right firmware for the inverter you are attempting to update. It's not actually necessary to have a computer with a real RS-232 port; a fake RS-232 port via a USB to RS-232 adapter is what the vast majority of us use. The procedure is outlined here.