SMA STP 50-40 Operating Manual page 104

11 Troubleshooting
Event number
7619
7622
7702
7801
8003
104 STP50-4x-BE-en-23
Message, cause and corrective measures
Communication fault with meter unit > Check communication to meter
The inverter is not receiving any data from the energy meter.
Corrective measures:
• Ensure that the energy meter is correctly integrated into the same network
as the inverter (see energy meter manual).
• For Wi-Fi connection: Improve the Wi-Fi connection quality (e.g., via Wi-Fi
repeater) or connect the inverter with the DHCP server (router) via
Ethernet.
No communication with the I/O module
This event is displayed during a device-internal communication error with the
SMA I/O Module. The inverter will disconnect from the utility grid for safety
reasons.
Device fault
The cause must be determined by the Service.
Corrective measures:
• Contact the Service.
Fault overvoltage protector
One or more surge arresters have tripped or one or more surge arresters are
not inserted correctly.
Corrective measures:
• Ensure that the surge arrester is inserted correctly.
• If surge arresters have tripped, replace the tripped surge arresters with
new surge arresters.
Active power limit Temperature
The inverter has reduced its power output for more than 10 minutes due to ex-
cessive temperature.
Corrective measures:
• Clean the cooling fins on the rear of the enclosure and the air ducts on
the top using a soft brush.
• Ensure that the inverter has sufficient ventilation.
• Ensure that the ambient temperature +35°C has not been exceeded.
• Ensure that the inverter is not exposed to direct solar irradiation.
SMA Solar Technology AG
Operating manual