Service manual

Table of Contents
1 Information on this Document ................................................. 4
1.1 Validity................................................................................................ 4
1.2 Target Group...................................................................................... 4
1.3 Symbols .............................................................................................. 4
1.4 Nomenclature..................................................................................... 5
2 Safety......................................................................................... 6
2.1 Safety Information.............................................................................. 6
2.2 Disconnecting the Inverter from Voltage Sources ............................ 7
3 Cleaning the Inverter................................................................ 9
4 Troubleshooting ........................................................................ 10
4.1 LED Signals......................................................................................... 10
4.2 Event Messages ................................................................................. 10
4.3 Error Messages .................................................................................. 11
5 Checking the PV System for Ground Faults............................ 19
6 Checking the Function of the Varistors.................................... 22
7 Replacing the Varistors ............................................................ 24
8 Recommissioning the Inverter.................................................. 25
9 Decommissioning the Inverter ................................................. 27
10 Spare Parts................................................................................ 29
11 Contact....................................................................................... 30
Table of Contents
SMA Solar Technology AG
Service Manual 3SB30-60TL-21-SG-en-11