12 Troubleshooting
SMA Solar Technology AG
Operating manual
SHP-US-20-BE-en-10
79
12. Recommission the inverter.
13. If the inverter still displays an insulation error, contact the Service (see Section 17, page 94).
The PV modules might not be suitable for the inverter in the present quantity.
12.4 Replacing the Surge Arrester
1.
DANGER
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources (see Section 10, page 58).
2. Pull all surge arresters out of the slots.
1
1
2
3. Dispose of all surge arresters in accordance with the locally applicable disposal regulations
for electronic waste.
4. Insert new surge arresters.
5. Ensure that each surge arrester is securely inserted into its slot.
6. Recommission the inverter (see Section 8.2, page 37).
12.5 Activate the diagnostic function in the event of a
defective Speedwire communication
If several Speedwire devices in line topology are connected to each other in the system and the
Speedwire communication does not function properly, you have the option of activating diagnostic
functions for simple troubleshooting.
The following diagnostic functions are available:
• Activate Speedwire communication display on the inverter
• Test Speedwire communication via SMA Data Manager
Activate Speedwire Communication Display on the Inverter
By activating this diagnostic function, the inverter can signal that one network cable is connected by
the blue LED flashing. This allows you to quickly check whether the network cable is plugged in for
inverters where only one network cable is to be connected, and whether only one rather than two
network cables are connected for inverters where two network cables are to be connected.
Summary of Contents for SHP 125-US-20
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