Hi! I see your GoodWe inverter's LED is flashing 4 times and it hasn’t been connecting to the SEMS+ server since November 14. Let’s work through this together so you can get your monitoring back up and running.

The flashing of the LED four times usually means the inverter’s WiFi is connected to your router, but it is failing to connect to the SEMS+ server. This is a common issue indicating the inverter’s data can’t reach the monitoring platform.

Here’s a step-by-step approach:

1. Restart your home network equipment
Power off your router/modem, wait about 30 seconds, and power it back on. Sometimes network glitches cause the inverter’s server connection to fail. After the router is back online, wait around 30 minutes to see if the inverter LED stabilizes.

2. Restart the inverter
If the above doesn’t help, power cycle the inverter by turning it off and on again after a few minutes. This can refresh the inverter’s network connection and push it to reconnect properly.

3. Check router settings
- Ensure your router’s firewall isn’t blocking outbound connections on needed ports for SEMS+.
- Check if the inverter has a valid IP address on the router. You could try assigning a static IP to the inverter to avoid any DHCP conflicts.

4. Verify internet connectivity and permissions
Confirm your internet connection is stable and that there haven’t been network changes since November 14, such as new firewall rules or ISP changes that might block the inverter’s communication.

5. Update or reset WiFi module on the inverter
Some users have had success by resetting or reconfiguring the inverter’s WiFi module. Refer to your inverter’s manual for WiFi reset instructions.

If these initial steps do not resolve the issue, it might be necessary to check for firmware updates or escalate to GoodWe support, as server-side or firmware problems can also cause persistent disconnection.

Would you like me to help you with step-by-step instructions on any of these, or have you already tried some of these actions?

1
2
4

I already tried aal mentioned steps

Thanks for confirming you’ve already tried the basic steps. Since the SEMS+ app troubleshooting isn't working and the inverter still flashes 4 times without server connection, let's dive a bit deeper.

Given your inverter connects to WiFi (based on the 4-flash LED code), but can’t reach the SEMS+ server, it’s possible the issue lies with the SEMS+ account setup, device registration, or possibly server-related problems. Here are some advanced steps for you:

1. Verify Device Registration in SEMS+ Portal
Log into your SEMS+ web portal or app and check that your inverter is correctly registered under your account with the right serial number. Sometimes, after firmware updates or account issues, the inverter can be disconnected or unlinked. If the inverter isn’t visible, try removing and re-adding it using the QR code or serial number on your inverter.

2. Check SEMS+ App Version and Login
Make sure your SEMS+ app is updated to the latest version. Sometimes app glitches can cause devices to appear offline. Also, confirm you are logged in with the correct account credentials.

3. Confirm Network Permissions and Firewall Settings
Some routers and ISPs may block specific ports or IPs needed to communicate with the SEMS+ servers. Ports used by GoodWe devices typically include 8090 and 8080 for TCP communication. Verify these ports are open on your router's firewall and no new ISP restrictions are in place.

4. Check for Firmware Updates
If the inverter’s firmware is outdated, it can cause connectivity issues. Check if you can update firmware via the SEMS+ app or manually through the inverter interface or support tools.

5. Reset WiFi Module or Use Alternative Connection Methods
If your inverter uses a WiFi dongle, try reseating or resetting it. If you have an available Ethernet port, temporarily connecting via wired Ethernet might help isolate WiFi module issues.

6. Server-side or Power Outage Check
Occasionally, SEMS+ servers undergo maintenance or experience outages. Check GoodWe’s official support pages or community forums if there are server-wide issues reported since your problem started on November 14.

Since you’ve done the basic network restarts and power cycles, trying these advanced checks might highlight where the problem is.

If you'd like, I can guide you step-by-step on verifying your SEMS+ account and device registration or help with checking router port settings.

Would you prefer to start there? Also, have you noticed any changes with your router setup or account details since November?

Here are some official GoodWe and community references that might help as well:
- GoodWe Troubleshooting Guide (PDF) 1
- Community discussions on SEMS+ connectivity issues 2
- WiFi reconnection tutorial 4

where can I find the current firmware version of my Goodwe GW3000-SX ? I now have V1.58.58

Great question! To check the current firmware version of your GoodWe GW3000-SX inverter, you can usually find it directly on the inverter interface screen if it has a display, or more commonly through the monitoring app you use, which is often the SolarGo or SEMS+ app. Since you mentioned you have version V1.58.58, it sounds like you’ve already confirmed the firmware version.

Here’s how you can verify it and check for updates:

1. Using the SolarGo or SEMS+ app:
- Open the app and log into your account.
- Navigate to the Device or Settings section where your inverter is listed.
- Look for "Firmware Version" or "Software Version" details. This is usually displayed alongside other device info.

2. Inverter Interface (if available):
- On the inverter's LCD or display panel, go to the "Settings" or "Information" menu.
- Locate the firmware version there.

3. Updating firmware:
- GoodWe firmware updates are typically done via the app by uploading the firmware file or through an OTA (over-the-air) update if your inverter supports it.
- Be sure your inverter has a stable internet connection before starting an update.

From my search, I see a newer firmware version V1.0.8 is available for the GW3000 model, which could possibly be an update version or a separate firmware branch, so double-check the exact firmware compatibility with your SX variant before proceeding with any upgrades1 8.

If you want, I can guide you through checking the firmware in your app or help you with the update process. Does that sound good to you?

Is there a newer firmware version than V1.58.58 for Goodwe GW3000-SX?

Thanks for your question about the GoodWe GW3000-SX firmware updates. Based on my search, there isn't a direct mention of any firmware version newer than V1.58.58 specifically for your GW3000-SX model. However, GoodWe recommends checking for firmware updates through the SolarGo app, where you can initiate a "Check for Update" to see if any newer versions are available for your inverter model1.

If you haven't already, I suggest opening the SolarGo app, navigating to your inverter's settings, and using that option to check for available firmware updates. This method ensures you get the latest officially supported update for your specific unit.

If you want, I can guide you through that process step-by-step. Would you like to do that?

do i have to set specific port forwarding on my modem for connections to the SEMS server?

Thanks for the question about port forwarding for your modem to enable the SEMS+ app to connect to the SEMS server.

GoodWe’s official documentation and common user guides for SEMS+ do not mention a requirement for setting up specific port forwarding on your modem or router for the inverter to communicate with the SEMS+ server. Generally, the inverter initiates an outgoing connection over standard ports, which should not require any inbound port forwarding rules.

In most cases, having a stable internet connection with outbound access allowed by your router and modem is sufficient. However, you should ensure that your network firewall or security settings do not block outbound TCP connections on the ports typically used by GoodWe devices (commonly ports like 8090 or 8080).

So in summary:
- No specific port forwarding is usually required on your modem/router for SEMS+ server communication.
- Just make sure outbound connections from the inverter to the internet are allowed and not blocked by firewall rules.

If you have a very restrictive network or custom firewall settings, you might want to verify that TCP ports 8080 and 8090 are open for outbound connections. But typical home modems and routers handle this by default.

If you want, I can help you check your router/modem firewall settings to confirm ports are open or advise on setting exceptions if needed.

Does that help clear things up for you?

Which ports do SEMS+ servers use?

Thanks for asking about the SEMS+ server ports used for GoodWe inverter communication. From what I’ve found in the official GoodWe SEMS+ user manuals, the inverter and SEMS+ app communicate with the SEMS+ servers primarily via standard HTTP/HTTPS ports without needing special port configurations on your router or modem.

Specifically:
• The inverter initiates outbound connections, usually over TCP ports 8080 or 8090.
• The SEMS+ app communicates with the server over standard web ports (80 for HTTP, 443 for HTTPS).

The user manuals don't mention any requirements for inbound port forwarding rules. As long as your network allows outbound connections on these ports, the inverter should be able to connect to the SEMS+ server properly.

If your network employs strict firewall or filtering rules, ensuring outbound TCP traffic on ports 8080 and 8090 is allowed would be the key.

Would you like me to help you check your router or firewall settings to confirm these ports are open?

If you want to review the official manual yourself, here’s a GoodWe SEMS+ User Manual link for reference: 1

Do I need to change firewall settings for SEMS+?

Good question about firewall settings for SEMS+! From what I found, the official GoodWe SEMS+ User Manuals and common support documents don’t specifically mention needing to change or customize firewall settings on your network for SEMS+ to work properly1.

Typically, the inverter initiates outbound connections to the SEMS+ servers, which means as long as your router/modem/firewall allows outbound internet traffic on the relevant ports (usually TCP 8080 and 8090), no special firewall configuration is required. No inbound port forwarding or special firewall rules are generally necessary.

So in short:

- You don’t need to change firewall settings if outbound traffic on those ports isn’t blocked.
- Just make sure your network firewall or security software isn’t restricting outbound connections from the inverter.
- If you have a very strict firewall setup, double-check it allows outbound TCP connections on ports 8080 and 8090.

If you want, I can help you review your firewall settings or router configuration to ensure nothing blocks the inverter’s connection to SEMS+, just let me know!

Does this help with your question?

Common firewall issues with SEMS+

Thanks for your question about common firewall issues with the SEMS+ app. Based on available information and community experience, here are some typical firewall-related problems that users encounter which can disrupt communication between your GoodWe inverter and the SEMS+ server:

1. Outbound Port Blocking
- The inverter needs to initiate outbound TCP connections usually on ports 8080 and 8090. If your firewall (router or local machine) blocks these outbound ports, the inverter can't send data to SEMS+ servers.

2. Strict Network Filtering or Security Software
- Some advanced firewalls or security tools may block unfamiliar device traffic or protocols by default. This can prevent the inverter from establishing connections, even if standard ports are open.

3. Double NAT or Multiple Routers
- Network setups with multiple routers/firewalls can cause complications in packet routing or blocking, especially if one device's firewall restricts outbound traffic.

4. Router Features like “Router Steering” or Client Isolation
- Features that isolate devices on your WiFi or steer clients between bands (2.4 GHz and 5 GHz) can interfere with stable inverter connectivity5.

5. Temporary Internet Outages or Fluctuations
- If the firewall detects repeated failures or unstable connections, it might block or limit traffic temporarily.

How to Address These Issues:

- Confirm outbound TCP ports 8080 and 8090 are open on your firewall/router.
- Disable any aggressive security or intrusion prevention features temporarily to test connectivity.
- If using advanced router settings, look for and disable options like “Router Steering” or “Wireless Isolation.”
- Ensure your inverter has a stable connection to the same router or network segment as your smartphone or monitoring device.
- Check GoodWe community forums or support for updates on firewall compatibility or known issues.1 5

If you'd like, I can help you step through checking your router or firewall settings to make sure nothing is blocking your inverter’s connection. Does that sound good?