A faulty or nonexistent connection from the inverter or Sunny Home Manager to Sunny Portal can occur for several reasons. In this post, we present a brief tutorial to help you restore the connection quickly. If something goes wrong, simply follow the steps below. It’s a good idea to rule out these potential sources of errors before calling the SMA Service Line.
1. Download the Current Firmware
Is your inverter operating with the current firmware version? Please check the SMA Download Area (link) to see whether there has been a recent update. If so, download it. Firmware can be installed via Bluetooth® using the Sunny Explorer software.
2. Double-check: Does the inverter have a valid IP address?
Please also be sure that the DHCP (Dynamic Host Configuration Protocol) setting is activated in the router and that the inverter has been assigned a valid IP address.
An example of an invalid IP address is an address that starts with the numbers 169.254.xxx—this is a “fallback address,” which is assigned if the router has not given the inverter a valid IP address.
Then check the inverter’s network settings via Sunny Explorer or obtain them from the inverter’s display. Also make sure that all network cables are plugged in and locked and that the inverter is feeding in properly (green LED is lit).
If these steps do not solve the problem, and you do not receive a valid IP address, please proceed as follows:
3. Assign a static IP address
Assign the inverter a static IP address outside the DHCP range and test whether the inverter now transmits data to the Sunny Portal. Keep in mind that the automatic configuration feature in the inverter must be set to “No.” You can check this, for example, with the Sunny Explorer software.
Important when using a DLAN adapter (Powerline): Is the device multicast-capable?
As a rule, if fiber media converters (DLAN, WLAN, etc.) are used, SMA cannot guarantee that the Webconnect or Speedwire connection will function properly in all cases. This is because some adapters are not multicast-capable or do not support the required Internet Group Management Protocol (IGMP). For this reason, we recommend connecting the Sunny Home Manager to the router with a direct connection (cable without an adapter), if possible.
As a precaution, ask the fiber media converter’s manufacturer whether the devices are multicast-capable and support the IGMP protocol in at least Version 2.
Background: Unfortunately, some media converters, such as a DLAN adapter, “forget” the credentials of Webconnect inverters or the Sunny Home Manager, for example, within a few minutes. As a result, in some cases a request from Sunny Portal can no longer reach the device, because the fiber media converter does not know where to send this request. In this case, your only option is to disconnect the adapter from the network for a short time and then reconnect it. If that does not work, you’ll have to purchase a new adapter that is IGMP-capable.
Of course, if these suggestions don’t resolve the problem or you require assistance, you can always consult our colleagues at the Service Line. Ideally, you will have already checked the items listed above.
Our Service Line will also need the following information:
- the type of router
- your Internet service provider
- the type of connection (DSL, UMTS, etc.)
- the structure of your network (components, such as switch, DLAN, WLAN)
- portal gateway / data logger
Did you find this tutorial useful? Do you have any questions or suggestions? If so, please enter them in the Comments section.
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