Huawei SUN2000 Inverter: WIFI Dongle Connection, Firmware Update & FusionSolar

szczukot wrote:

What else should I do?

Try further

szczukot wrote:

I select during upgrade and get "no device to upgrade".

And more to the point, at what point, do you have the option to select the firmware file?
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Well it turned out that this version V100R001C00SPC 135 just doesn't want to load. I uploaded the slightly older V100R001C00SPC 133 and then all the way through the latest V 2 00R022C10SPC 114 . I wasn't sure if there would be problems because it's a different number already, but it looks like it's ok

ps. And tentatively I can see that the modbus is now going .

How do I correctly add the dongle to an existing installation?
I have an installation with an S2000-L1 inverter. The system is installed by a company that refuses to grant me installer privileges.
For now, I do not want to unplug the inverter from the original installer.
So, after resetting the local installer password, I log in locally, connected the dongle. Commissioning..... etc.
Everything seemingly looks fine as I am connected as a local installer and directly from the inverter wifi. However, when I switch to the normal network the inverter shows offline status, it does not connect to the fusionapp system. Same when trying to connect via laptop. The inverter is offline.
After disconnecting the dongle, everything returns to normal. The inverter connects to the server.
I am adding the dongle because I am planning to install a Luna2000 battery and the manual says that the dongle is required for TOU (time-of-use).


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Problem solved.
As it turned out, the normal user does not have permission to add devices to the installation. Therefore the dongle did not report. The only device that can be added on its own is the car charger.
So I was forced to completely divorce my installer and move the inverter to an installation created by myself.
The rest is now a formality. Now everything is visible in the new installation: inverter, meter, dongle and new battery.

Hi all,
I have a SUN2000 + LUNA2000 inverter and am trying to figure out the update issue. I have a software from about a year ago and it doesn't update itself, I have no notifications regarding updates in the FusionSolar app. I know that I can download a package and upload it manually, but how about automatic updates?

In my opinion, the easiest way is to do the update after logging in via the website. Then:
Plants -> Update Management -.> Click Create -> From the list Device Type select Inverter -> A list of available devices will appear, hook the one you want to update -> scroll down and in Target version select the latest -> select Yes in Authorized or Not -.> click OK .
And that's it.
In the same way, you will update other devices on your system.

I won't do it that way because I don't have access to the installer account, in the app I only log in as a user. I asked the installer the other day, he said that the updates are done automatically. I guess I'll have to pester him further.
Do the updates bring any noticeable new features at all? New storage or inverter modes? Or just "bugfixes"?

Hello, are any of you using the Wallbox from Huawei? I have this fitted at my place but unfortunately I am having problems configuring charging from PV and hourly.

I have. What problems?

Charging at PV preference and timer does not work. Meaning the car charges, but at quite random times. And not at the ones set in the timer.

Because there may not be an adequate surplus of PV over and above the consumption of the house in the scheduling windows.

The surplus is certainly there. The installation is 30 some kW and the house draw during the window is 3 kW. The window is set for 11 a.m. to 5 p.m. And the car starts charging at 11 p.m. An interesting phenomenon.

I would experiment with a disjointed criteria setting.

Good evening everyone - I have a question about how to switch the language in the inverter in the Sun2000 app to Chinese and can you remove the bushes in the background of the app? After the update I clicked something and Chinese characters appeared massacre normally - can I change this only through the service or somewhere else? Greetings to all

Changing the wallbox firmware helped. Now everything works as it should.

Good afternoon,
If anyone has had a similar case or knows even part of the solution, I would very much appreciate your help. I am an electrician by profession, but - apart from domestic work (e.g. connection of the cable line, new boxes, chargers, domestic installation) I work every day in another profession (although also related to electronics).
My story is quite long, Huawei support failed, the team failed - I am also running out of ideas.
For 3 years I had a Sun2000 5 kW with a ~6 kWp installation on JaSolar 325W panels. It worked flawlessly, south-east roof, peak production in the afternoons (close to noon) was a 'prescribed' 5.5 kW. It lasted quite a long time - the total production on a perfect sunny day was max. about 42 kWh. Currently only about 10 kWh more. Nevertheless, the power ratio of the 1st string to the 2nd is correct: the 2nd string is also approx. 2/3 of the power of the 1st. So here the maths is correct.
I recently came up with the idea of extending the system and for the last 2 months the team has been constantly rebuilding something, because there is always something to blame - either some of the panels are shaded on the northern slope of the roof (so I moved about 45 degrees of south-east inclination to the main slope), or something else, or the optimiser, or the voltage on the 2nd/new string is too low (at the beginning there were 8 panels, so I added 3 and now there are 11), etc. etc. etc. What is the problem?
Well, I changed the inverter (to a used one year old from a friend) to a Sun2000 8 kW, added 11 375 W panels on the 2nd string. The voltage currently never goes below the minimum 315V during operation. According to Huawei, everything is OK.
But yet it is not. For me it isn't. Why? Because the installation is about 10 kWp, but the peak max. is 7.8 kW. And that's it. And it doesn't want more. That is to say, there are times when "for a while" it wants to - when the sun is covered by clouds and suddenly those clouds pass and the maximum sun comes out, then literally for a moment(!) a peak of 8.2, 8.6, sometimes 8.79 kWp appears. But immediately afterwards the graph drops down to those "enchanted" 7.8 kW. .
I have 7 optimisers and I can see when and how much they cut off (I have the rights of installer and owner) - basically during no longer peak only afternoon hours as the shadow of the chimney wanders across the roof, for example, it will cut off after 4 volts on 2-3 panels. So not much.
As a result, I don't know if there is something wrong with the installation (it was checked, panels removed, measured), or in the inverter, or maybe there is some "weird" setting left in the inverter from the previous owner (he, I don't know, some other team installed it for him).

For me, the conclusion is one - and it coincides with the position (at the beginning of the adventures) of Huawei: that the peak will be 8.8 kW. But it isn't.
All firmware updated to the latest version and no alarms on the inverter.

Is anyone able to help me, please?

>>21207238 .

At my place it is also 9.7 kWp and the inverter is the same, if it is sunny and hot all day it also chalks up a bubble below 8 kW, or just a little above these 8 kW it swings out.

When the bubble is cut into slices, it happens these 8.8 kW several times even on the same day in summer and half an hour draws such a stool.

In the spring, when the bubble is full, I have a partially flattened top, which means it comes up to 8.8 kW and so on for 2-3 hours.

So the ambient temperature plays first fiddle here.

Maybe experiment and add mechanical cooling for the heatsinks, with passive cooling it may have a harder time, the environment smothers it.

It will be interesting to see how much you gain cables and panels are unlikely to be cooled anymore.

I have an inverter in the basement, the inverter heatsinks supported by gravity ventilation, are placed partly in 2 ventilation ducts.

The tile I have is unfortunately black

In fact, when there are alternating sun and clouds - production jumps up to 8.6-8.8 kW for a while at my place too. And in your case cooling helped something - did you experiment? Because that would mean that this inverter has a manufacturing defect - bad cooling. The weaker 5 kW didn't have that. And maybe rolling back the firmware - if so to which one? is ...165 - would make a positive difference? Well, no shit... By the way, I asked Huawei support recently if sometimes the inverter doesn't limit something - I talked about it and support saw that it has about 70 degrees inverter. But they said this is normal.... - for them it only matters in which conditions it works, that is how many degrees it is in the room. And if it is - as I measured - 28 degrees in the room, it is "normal". Or is it not? (

>>21207554 .

Right at the start I did extra cooling for him, so I don't have a comparison.
I wanted it to live a little longer with me.

Huawei support must care about the brand, even at the expense of kW, I'm inclined to believe.


28*C it never experienced 21-22*C max.

Put some vent on it with a timer from the back for a few days and take a look at the graphs.

Added after 6 [minutes]: .

webonek wrote:

The weaker 5 kW didn't have this.

Two smaller inverters from these mounted panels will always squeeze out more kW than one.

Moment - did you do the cooling to it and still no peak of 8.8 kW? Didn't you have the 8.8 kW peak (for more than a moment) - then you did the cooling and you already have the 8.8 kW peak longer even in summer? Because I'm confused...? .

P.S. In between posts I whacked him - temporarily and as a guerrilla - with 5 pieces of 80mm each windmill, the kind that are too loud for a computer, well they blow solidly. A little against the art (convection), because I placed them flat (almost, because there is space for a 60-70 mm fan between the walls), above the heatsink, but so that they would blow air from above. Ultimately, as if it works, I'll make a hurricane there (hallway, it could be) - from below and above I can give a total of 10 fans.

webonek wrote:

Moment - you did the cooling to it and it still doesn't have an 8.8 kW peak? Didn't you have an 8.8 kW peak (for more than a moment) - then you did the cooling and you already have an 8.8 kW peak longer even in summer? Because I'm confused...?

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I did for the first installation.
By July on full bubble it is quietly exceeding 8 kW.
July, August most 8.3 kW I found

When the bubble is shredded, it calmly hits the maximum and can even maintain 8,8 kW for less than an hour.
It can even maintain 8.8 kW for less than an hour, then break, 10 minutes again and so on, as long as the sun is shining.

Added after 4 [minutes]:

webonek wrote:

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... because there is room for a 60-70mm fan between the wall, above the heatsink, .

Maybe you need to check that you have the inverter mounted correctly from walls, ceilings etc.
There are appropriate clearances given which must not be exceeded.
Neither obstructing, obstructing.

>>21207692 .

I have done the cooling - it is "a bit" better: the peak is not 7.8 but 8 kW. The inverter temperature is ... strange. I mean, on the readings it dropped from yesterday's 73°C to 61°C, but this heat sink is about 30-40 degrees at most, so it looks like this sensor is somewhere in the middle and there is no proper cooling inside. I'm unlikely to do anything about it. It is mounted identically to the previous 5 kW, anyway I don't know how it can be mounted wrong. There is nothing around it.

>>21207974 .
And this inverter how old is it, maybe it has some problem dissipating that heat onto an external heatsink.

1 year, maybe 1.5 years max. Warranty until 2033.

Both thongs are running at a sort of reduced power of about as much as 30%. But why...?
PV1 6 kWp hooked up on the old ...152 software to the same inverter originally had about 6 kW - and now has 4.3 kW in full sun. It cuts PV2 in the same way. Is it safe to upload the previous soft if the MBUS, Dongle and Opt. were also updated - as I currently have a ...165 and apart from the installation upgrade nothing else has changed? Is something stuck ... (inverter)?

webonek wrote:

>>21207692

... but this heatsink is about 30-40 degrees at most.

I don't have anything to measure the temperature of the heatsink, but at my place it is steaming up my fingers.

At my place with the fan hurricane it is lukewarm. Previously it was steaming.

webonek wrote:

It is lukewarm with the fan hurricane.
Previously it was steaming.

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So, it looks like the heatsink is properly putting power to the outside.

webonek wrote:

Both thongs are running at a seemingly reduced power of about as much as 30%. But why...?
PV1 6 kWp hooked up on the old ...152 software to the same inverter originally had about 6 kW - and now has 4.3 kW in full sun.

.
In short - are the DC voltages from the strings now underestimated compared to the past or are the DC voltages correct all the time and the AC side power is now being cut?

Honestly, I'm not sure - but certainly on the stringing of the new PV2 11x375W the voltage was too low at first (below 315V minimum for this 8kW inverter), so they told me to buy more, as there were 8 originally. When I bought in, the team connected 2 of these panels to the PV1 string (325W) by mistake, but it is now correct. The voltage on the panels (I can see this with the optimisers) seems(?) correct to me: about 32-33 V as the sun shines for 375 W and about 2 V less for 325 W. The maximum current is around 9 and 8 A respectively. So what conclusion...?

Voltage on the grid at the time of production depending on the phase from approx. 243 to 245 V maximum - if that matters.

webonek wrote:

.
Well, I changed the inverter (to a used one year old from a friend) to a Sun2000 8 kW, added on a 2nd string of 11 375 W panels. The voltage currently never goes below the minimum 315V during operation. According to Huawei, everything is OK.
But yet it is not. For me it isn't. Why? Because the installation is about 10 kWp, but the peak max. is 7.8 kW. And that's it. And it doesn't want more. That is to say, there are times when "for a while" it wants to - when the sun is covered by clouds and suddenly those clouds pass and the maximum sun comes out, then literally for a moment(!) a peak of 8.2, 8.6, sometimes 8.79 kWp appears. But immediately afterwards the graph drops down to those "enchanted" 7.8 kW. .
awienie after the previous owner (he I don't know, some other team fitted it for him).

For me, the conclusion is one - and it coincides with the position (at the start of the adventures) of Huawei: that the peak will be 8.8 kW. But it isn't.
All firmware updated to the latest version and no alarms on the inverter.

.
But I guess that's how huawei inverters work - they don't have a power bonus , do you have somewhere in the inverter documentation that it should output more than 8kW?
I have a 12kW inverter and it looks like that on the rare occasions when the panels give more - it's just flat out at 12kW
Also, to find this example I had to go back to 26 March - even though the installation is almost 12kWp, in summer the panels are too warm and at the moment about 10kW max can be drawn.

>>21209669 .
But this is how the 5 kW - the same Huawei model - worked: with a 6.1 kWp installation, it gave a fairly long peak of 5.5 kW. After rewiring the inverter itself to 8 kW, 6 kW production appeared. And now exactly the same string (because it remained unchanged) on a different inverter doesn't even make 5 kW, but some 4.7 kW. And the output of the panels is more than 30% higher.
On top of that, support Huawei itself claimed at the expansion that, and I quote: "with a 10 kWp installation, the 8 kW inverter will have a peak of 8.8 kW".

As you can see from the graph under ideal conditions a 5 kW inverter with panels over 6 kW was doing just under 42 kWh. And now as everything 70% more, the amount of current only maxes out at around 51 kWh. Something is clearly not right. It can't be like that - I just have no idea why. .