Huawei Solar integration with SUN2000-10K-LC0 not working

Third party integrations
1

I have a SUN2000-10K-LC0 and I am not able to connect to it using the Huawei Solar integration.

I am using a router (with OpenWrt) as a bridge to the SUN2000 built-in AP, NAT-ing 192.168.8.0/24 (the Inverter is on 192.168.8.1 in the AP networks). TCP/IP connectivity seems to work:

  • I can successfully ping 192.168.8.1 (the Inverter) from devices on my 192.168.1.0/24 LAN (including from my Home Assistant Green and from my Win11 PC)
  • I can successfully connect to port 6607 through the bridge (“Test-NetConnection 192.168.8.1 -Port 6607” returns True on my PC)
  • there is no answer on port 502 (or 80 or 443), even when connected directly to the SUN2000 built-in AP, so port 6607 seems to be the correct one.

However, when I try to add the device, I keep getting an “unexpected error” or “reading from the inverter failed” after several seconds of waiting time. I tried Slave IDs: AUTO, 0, 1, 2 and 3, with and without “elevate permissions”

Screenshot 2025-12-28 134857
Screenshot 2025-12-28 134857609×817 22.3 KB

FYI I also tried other alternatives:

  • via the IP to which the SUN2000 inverter is connected to my LAN: no answer on ports 6607 or 502, and, yes, I made sure “Local O&M” in “Settings” → “Router connection settings” in the “Device Commissioning” is enabled (even toggled it on/off a couple of time)
  • using port-forwarding instead of NAT-ing (exact same results, as you’d expect)

I really do not want to go the RS485+bridge route, if I can make it work via the network.

I am starting to think that the current version of the Huawei Solar is not yet compatible with the SUN2000-10K-LC0 (via the network), so I have 2 questions:

  • has anybody managed to make it work, and if so, how?
  • is there any other HA integration out there that can help (not counting Fusion Solar – I cannot get all the info I need from it)?

Thanks to all for the help!

2

I have a SUN2000-3KTL-L1 inverter and i spent quite some time trying to connect it via a bridge to HA. I finally gave up that route and connected it via a WLAN-AP into the same network as all other devices including HA.
May be that HA and the inverter have to be in the same network. I cannot confirm this as a requirement.

3

Thanks Jürgen! My bridge router is actually a TP-Link TL-WR902AC V4 WiFi access point/router, running OpenWRT, so that shouldn’t be the issue.

I read of other people that have been having issues with the LC0 version of the inverter, which I have, and I did not find any reference of it actually working with this HA integration l. I was if anybody had any success with it.

4

Hello,
same here SUN2000-5KTL working but not with bridge, directly via wifi LAN.
Sincerely I wasn’t happy due to unstability so I moved toward RS485.

remember only one connection is available so if you have multiple device connected while you are setting it up I won’t work.

5

Thanks Ettore.

update: I also tried a USB WiFi adapter directly connected to by Home Assistant Green. Same results:

  • I can ping the inverter on 192.168.8.1 from HA Green;
  • I can connect to port 6607 on 192.168.8.1 (but not to 502);
  • When I try to add the device, I keep getting an “unexpected error” after several seconds of waiting time. I tried Slave IDs: AUTO, 0, 1, 2 and 3, with and without “elevate permissions”.

It really seems that this version of the inverter and/or Firmware is not supported by this integration.

Did anybody manage to make the Huawei Solar integration work with a SUN2000-10K-LC0 / V100R023C10SPC111?