SMA Solar Technology AG Troubleshooting/Problem Solving
Technical Description SI2012_2224-TEN082311 191
W856 1 Device overheating at first SIC40
W857 1 No communication with first SIC40 for more than 24 h
W861 1 Battery connection polarity reversed or short-circuit at second SIC40
W862 1 Battery excess voltage (>65 V) at second SIC40
W863 1 PV generator excess voltage at second SIC40
W864 1 PV voltage absent or short-circuit at second SIC40
W865 1 Sensor fault or temperature deficit at second SIC40
W866 1 Device overheating at second SIC40
W867 1 No communication with second SIC40 for more than 24 h
W871 1 Battery connection polarity reversed or short-circuit at third SIC40
W872 1 Battery excess voltage (>65 V) at third SIC40
W873 1 PV generator excess voltage at third SIC40
W874 1 PV voltage absent or short-circuit at third SIC40
W875 1 Sensor fault or temperature deficit at third SIC40
W876 1 Device overheating at third SIC40
W877 1 No communication with third SIC40 for more than 24 h
W881 1 Battery connection polarity reversed or short-circuit at fourth SIC40
W882 1 Battery excess voltage (>65 V) at fourth SIC40
W883 1 PV generator excess voltage at fourth SIC40
W884 1 PV voltage absent or short-circuit at fourth SIC40
W885 1 Sensor fault or temperature deficit at fourth SIC40
W886 1 Device overheating at fourth SIC40
W887 1 No communication with fourth SIC40 for more than 24 h
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