Technical support – Voltmax Energy Solutions in Luxembourg https://voltmax.lu Center for Renewable Energy Sources Tue, 12 May 2026 16:00:29 +0000 en-GB hourly 1 https://wordpress.org/?v=7.0 https://voltmax.lu/wp-content/uploads/2024/12/cropped-Voltmax_logotyp_pozytyw_alpha-32x32.png Technical support – Voltmax Energy Solutions in Luxembourg https://voltmax.lu 32 32 Huawei Router Connection Settings (WLAN Configuration) https://voltmax.lu/huawei-router-connection-settings-wlan-configuration/ Mon, 13 Apr 2026 11:09:49 +0000 https://voltmax.lu/?p=18978 If your Huawei solar system is not connected to the internet or monitoring data is no longer updating, checking the router connection settings is one of the first steps. This guide explains how to configure WLAN connection in the FusionSolar app and reconnect the device to your local Wi-Fi network. Below, you will find the […]

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If your Huawei solar system is not connected to the internet or monitoring data is no longer updating, checking the router connection settings is one of the first steps. This guide explains how to configure WLAN connection in the FusionSolar app and reconnect the device to your local Wi-Fi network. Below, you will find the official procedure for both end users and installers, including local access and router setup steps. A successful connection is confirmed when the status indicator turns green.

Huawei router connection settings – User Interface Procedure

 

Method 1: The mobile phone is connected to the internet

Open the FusionSolar app, log in as the owner, and from the main menu go to Services > WLAN Configuration.

Method 2: The mobile phone is not connected to the internet

Launch the FusionSolar app and, on the login screen, select WLAN Configuration.

Connect to the device

You can connect in two ways:

QR code scanning
Tap Scan. When the QR scanning screen appears, place the QR code inside the frame so the app can automatically recognize it and connect to the device WLAN.

If the login page does not open after scanning, make sure your phone is actually connected to the device WLAN. If it is not, select the WLAN manually and connect that way.

If your phone shows the message “This WLAN network has no Internet access. Connect anyway?” while connecting to the built-in WLAN, tap CONNECT. Otherwise, access to the system may not be possible. The exact wording and interface may differ depending on the mobile device.

USB connection
Tap USB connection, then choose Confirm to allow the app to use the USB accessory. If you enable Use by default for this USB accessory, the app should not ask for confirmation again the next time you log in without unplugging the cable.

Log in as User. The example below refers to the inverter interface.

If you previously changed the password and no longer remember either the WLAN password or the local app login password, a password reset will be required.

download?uuid=0e7725a099bc4ef1a3ec95ccd3a17ac7& t=ICS20260115152437

After a successful login, the app should automatically open the router settings screen.
Choose the correct WLAN network and enter the password.

download?uuid=5bbe41dce1944d7c9981c3c8d898a4d5& t=ICS20260115152437

Tap Connect to reconnect the device to the router.

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Once the connection status changes to green, the router connection has been completed successfully.

Please note that the inverter is used here only as an example. Depending on the device, the screen layout may look slightly different.

Additional Operations

If the app does not automatically open the router settings page after logging in locally, use the following path depending on the device:

  • Inverter: … > Set > Router connection settings
  • SmartAssistant: Settings > Communication configuration > Router Configuration
  • Charger: :: > Advanced Settings > Route Management

Installer Interface Procedure

Open the FusionSolar app and, from the login page, choose WLAN Configuration.

Connect to the device

You can connect by using either QR code scanning or USB.

QR code scanning
Tap Scan and position the QR code inside the scanning frame so the app can detect it automatically and connect to the device WLAN.

If the login page does not appear after scanning, check whether the phone has connected correctly to the device WLAN. If necessary, connect to the WLAN manually.

If the message “This WLAN network has no Internet access. Connect anyway?” appears when joining the built-in WLAN, tap CONNECT. Otherwise, the system login may fail. The exact interface and wording can vary depending on the phone model.

USB connection
Tap USB connection and then Confirm to authorize access to the USB accessory. If Use by default for this USB accessory is selected, the app may not ask for confirmation again during the next login, as long as the USB cable remains connected.

Use the Installer account to log in to the web client. The inverter is shown below as an example.

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If the password was changed previously and both the WLAN password and local app password are no longer known, perform a password reset first.

After login, the system should automatically move to the router settings page.
Select the target WLAN and enter the correct password.

download?uuid=5f898b44a93847aeba14d4765bd2a04d& t=ICS20260115152437

Tap Connect to establish the router connection again.

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When the connection indicator turns green, the router has been connected successfully.

The inverter is used here only as an example. The actual interface may vary depending on the connected device.

 

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]]> SolarEdge App Not Displaying Production Data https://voltmax.lu/solaredge-app-not-displaying-production-data/ Mon, 13 Apr 2026 09:22:43 +0000 https://voltmax.lu/?p=18927 SolarEdge App Not Displaying Production Data: What System Owners Should Check First If the mySolarEdge app does not display production data, the problem is often related to communication between the inverter and SolarEdge’s monitoring servers, not necessarily to solar production itself. According to SolarEdge, monitoring data is usually updated every 15 minutes, and users can […]

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SolarEdge App Not Displaying Production Data: What System Owners Should Check First

If the mySolarEdge app does not display production data, the problem is often related to communication between the inverter and SolarEdge’s monitoring servers, not necessarily to solar production itself. According to SolarEdge, monitoring data is usually updated every 15 minutes, and users can check the “Last Updated” field in the app dashboard or Site Details page.

This distinction matters. A system can still be producing energy even if the app is not showing current values, because production and communication are handled separately. SolarEdge explicitly notes that a communication issue does not automatically mean the PV system has stopped producing.

Start with the simplest question: was production data ever visible?

SolarEdge recommends first checking whether production data was ever displayed in the app. If production data was never visible from the beginning, the system owner should contact the installer so that inverter communication can be checked. If the app used to work but the last update is more than 24 hours old, SolarEdge advises checking system communication next.

Step 1: Check whether the inverter is communicating

The first practical check is to confirm communication at the inverter itself.

For SolarEdge inverters without an LCD display, the blue LED is the key indicator. When the blue LED is on, the inverter is communicating with the monitoring platform. SolarEdge’s LED reference also confirms that any LED combination with the blue LED on indicates communication with the monitoring platform.

For inverters with an LCD display, SolarEdge instructs users to access the server communication screen. If the display shows S_OK, the inverter is connected to the monitoring server.
Tap through the display screens until you see the image below:

This is one of the most important checks because it helps separate a monitoring issue from a wider system issue. SolarEdge also explains that, on LCD-equipped systems, Pac [W] indicates the amount of AC power currently being produced. 

green blue led

Step 2: Confirm whether the system is producing power

If the concern is not only missing app data but also suspected low or zero production, SolarEdge provides a separate indicator for production.

For inverters without an LCD screen, the green LED shows that the system is producing power. SolarEdge also reminds users that the system does not produce at night, which should always be considered before assuming there is a fault.

This means a common real-world scenario is entirely possible: the inverter may still be producing energy, but the app appears empty because the communication link to the monitoring platform has been interrupted.

Step 3: Check the router and local internet connection

If the inverter was communicating before but app data stopped updating, SolarEdge advises checking the router settings. The router should be powered on and connected properly. SolarEdge also specifically asks whether the router or Wi-Fi password was changed recently, because this can break the inverter’s connection to the monitoring platform.

This is especially relevant on systems that use Wi-Fi for monitoring communication. SolarEdge’s Wi-Fi troubleshooting documentation explains that the inverter can be reconnected to the local wireless network through the mySolarEdge app. The guide also says users should verify that the inverter is responsive first by checking for illuminated LEDs. If the inverter is not responsive, SolarEdge recommends contacting the installer.

Configuring Inverter Communication

You may need to reconfigure your inverter communication in certain cases, such as when your Wi-Fi network or password has changed. To configure your inverter communication:

  1. click “Inverter Communication” in the menu:

    " in the menu.
  1. Refer to the steps above, under “Connect to Your Inverter.“
  2. The status of your Wi-Fi connection should be ‘disconnected’. To connect to your Wi-Fi network, click “configure. The status of your Wi-Fi connection should be ‘disconnected’. To connect to your Wi-Fi network, click “configure.
  1. Select your preferred wireless network and insert a password, then click “join.” You will now be connected to your Wi-Fi network. To confirm the connection is successful, click on “inverter communication” in the menu. Connect to the inverter and verify the status as S_OK. 


    Select your preferred wireless network and insert a password, then click “join.”You will now be connected to your Wi-Fi network. To confirm the connection is successful,click on “inverter communication” in the menu. Connect to the inverter and verify the status as S_OK.

Step 4: Reconfigure Wi-Fi communication if network details changed

When the home Wi-Fi network or password has changed, SolarEdge instructs users to reconfigure inverter communication in the mySolarEdge app. In its official communication setup guide, SolarEdge explains that users can open Inverter Communication, connect to the inverter, select the preferred wireless network, enter the password, and then verify that the connection status is successful. SolarEdge states that S_OK in the Inverter Communication or Inverter Status menu means communication with the SolarEdge Monitoring Server is successful.

The SolarEdge Wi-Fi troubleshooting guide adds the same confirmation criteria: once reconnection is successful, users should check for a blue-lit LED under the inverter and verify S_OK in the communication or status screens. If the blue LED or S_OK is still not shown, SolarEdge recommends contacting the installer.

Step 5: Reset the router if needed

If the previous checks do not resolve the issue, SolarEdge’s official app support page recommends resetting the router and then checking inverter communication again. If communication problems continue after that, SolarEdge directs system owners to contact their installer.

When should the installer be contacted?

SolarEdge’s official support pages consistently point system owners back to the installer in several situations: when production data was never visible, when the inverter is not communicating, when the inverter is not responsive, or when Wi-Fi reconnection does not restore the blue LED or S_OK status.

That recommendation is sensible because the installer can verify whether the issue is related to site communication, inverter settings, or another system-level fault.

A practical summary for system owners if SolarEdge app not displaying production data

If your SolarEdge app is not showing production data, the most reliable approach is to check the issue in this order:

  1. Look at the Last Updated time in the app. SolarEdge says monitoring data is usually refreshed about every 15 minutes.
  2. Confirm whether production data was ever available before. If it never appeared, contact your installer.
  3. Check inverter communication:
    • Blue LED on for inverters without LCD = communication is active.
    • S_OK on LCD/display screens = communication with the monitoring server is active.
  4. Check production separately:
    • Green LED on means the system is producing.
    • Remember that solar systems do not produce at night.
  5. Verify the router is on and connected, and check whether the Wi-Fi network or password has changed.
  6. Reconfigure Wi-Fi in mySolarEdge if needed, then confirm the connection by checking for blue LED or S_OK.
  7. If the issue remains, reset the router and recheck communication.
  8. Contact your installer if communication is still not restored or the inverter is unresponsive.

Need support with your PV system in Luxembourg?

If your SolarEdge app is not displaying production data, please send us a detailed message at service@voltmax.lu or use the service form below. Include the site address, the inverter model if known, the last time data was visible in the app, any screenshots, and whether the inverter shows a blue LED or S_OK communication status. Clear information helps us diagnose the issue faster.

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]]> Understanding SolarEdge Inverter Status LED https://voltmax.lu/understanding-solaredge-inverter-status-led/ Tue, 02 Jan 2024 13:20:59 +0000 https://voltmax.lu/?p=5737 Understanding SolarEdge Inverter Status LED: Decoding LED Indicators and Switch Positions for System Performance Insights   Maximize your inverter’s efficiency with our comprehensive guide on interpreting the status and performance signals. Your inverter is equipped with a user-friendly switch and three color-coded LEDs, each providing crucial information about your system’s operation. Whether it’s identifying errors […]

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Understanding SolarEdge Inverter Status LED: Decoding LED Indicators and Switch Positions for System Performance Insights

solaredge inverter status led instruction

 

Maximize your inverter’s efficiency with our comprehensive guide on interpreting the status and performance signals. Your inverter is equipped with a user-friendly switch and three color-coded LEDs, each providing crucial information about your system’s operation. Whether it’s identifying errors or assessing performance, our detailed tables explain the various LED colors and switch position combinations, ensuring you have all the necessary insights for optimal inverter performance.

Learn the significance of each LED color and switch position in our easy-to-follow guide, designed to help you quickly diagnose and understand your system’s status. Stay informed and maintain your inverter at its best with our expert insights.

You might also like: Overpaneling and inverter sizing – how much DC oversizing is smart?

Inverter Status LED

Main Indications

Description LED
Inverter is communicating with the monitoring platform

Any combination of LEDs on condition that the blue LED is on.

blue LED is on

 
System is producing Any combination of LEDs on condition that the green LED is on.
12 OFF ON OFF retinax2 1

 
AC is connected but the system is not producing

AC is connected but the system is not producing

08 OFF BLINKING OFF retinax2 Ok

 
System error

Any combination of LEDs on condition that the red LED is on.

ON OFF OFF retinax2

 

System Performance Information

LED Page Switch Position LED
Power optimizers not paired
S_OK
SWITCH 1 bigger
07 OFF BLINKING ON retinax OK
Power optimizers not paired
No S_OK
SWITCH 1 bigger
08 OFF BLINKING OFF retinax2 Ok (1)
Pairing
SWITCH 1 bigger
09 BLINKING BLINKING BLINKING retinax2 0
Wake-up/ Grid Monitoring
SWITCH 1 bigger
10 OFF BLINKING BLINKING retinax2
System Producing
S_OK
SWITCH 1 bigger
11 OFF ON ON retinax2
System Producing
No S_OK
SWITCH 1 bigger
12 OFF ON OFF retinax2

 
Night mode (no production)
S_OK
SWITCH 1 bigger
13 OFF FLICKERING ON retinax2 0
Night mode (no production)
No S_OK
SWITCH 1 bigger
9 OFF FLICKERING OFF retinax2 0
PID Rectifier
S_OK
SWITCH 1 bigger
02 BLINKING BLINKING ON retinax2 10

 
PID Rectifier
No S_OK
SWITCH 1 bigger
03 BLINKING BLINKING OFF retinax2
Inverter is OFF (Safe DC)
S_OK
SWITCH 0 bigger
07 OFF BLINKING ON retinax OK 1
Inverter is OFF (Safe DC)
No S_OK
SWITCH 0 bigger
08 OFF BLINKING OFF retinax2 Ok (2)
Inverter is OFF (DC not safe)
S_OK
SWITCH 0 bigger
02 BLINKING BLINKING ON retinax2 10 (1)
Inverter is OFF (DC not safe)
No S_OK
SWITCH 0 bigger
03 BLINKING BLINKING OFF retinax2 (1)
Inverter configuration or reboot
SWITCH 1 biggerSWITCH P bigger 2
01 ALL ON retinax2 1
Inverter firmware upgrade
SWITCH 1 biggerSWITCH P bigger 2
15 ALTERNATING retinax2
No AC power
SWITCH 0 biggerSWITCH 1 biggerSWITCH P bigger 2
15 OFF OFF OFF retinax2
System error
SWITCH 0 biggerSWITCH 1 biggerSWITCH P bigger 2
ON OFF OFF retinax2 (1)

AC Output Power Production Percentage

LED Page Switch Position LED
Percentage of AC Production: 0 – 33 %
SWITCH 1 bigger
12 OFF ON OFF retinax2 0
Percentage of AC Production: 33 – 66 %
SWITCH 1 bigger
16 OFF OFF ON retinax2
Percentage of AC Production: 66 – 100 %
SWITCH 1 bigger
11 OFF ON ON retinax2 0

Extended Inverter Lifespan through Proper Signal Interpretation: Regular monitoring and understanding of your inverter’s signals can not only enhance its performance but also extend its lifespan. By promptly responding to the indicators, you can prevent long-term damage and ensure that your inverter remains in top condition for a longer period.

Cost-Effective Operation and Energy Saving Tips:

This guide also sheds light on how understanding your inverter’s status can lead to more cost-effective operation. Learn how to adjust settings based on the LED indications to optimize energy use and save on electricity bills. This aspect is particularly beneficial for those looking to make their homes or businesses more energy-efficient.

Stay ahead in managing your energy system effectively with our in-depth guide. Embrace the full potential of your inverter by mastering the art of reading its signals and ensuring optimal performance.

If you want to know more about SolarEdge inverters, visit: https://voltmax.lu/solaredge-energy-storage/

Now you know the meaning of the Inverter Status LED, You can also talk to our advisor about preparing an offer and financing for your installation: Call us +352 661 444 831 or fill out the form on CONTACT PAGE

 

Thinking about going solar? With SolarEdge inverters, you get smart monitoring and maximum reliability from day one — contact us to design your perfect system

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