20 Troubleshooting SMA Solar Technology America LLC
218 SI4548-6048-US-BE-en-21 Operating Manual
20.8.9 Category SYS
W874 1 No PV voltage or short circuit on Sunny Island Charger 3
W875 1 Sensor error (or undertemperature) on Sunny Island Charger 3
W876 1 Overtemperature Sunny Island Charger 3
W877 1 No communication with Sunny Island Charger 3 for more than 24 h
W881 1 Battery reversely connected or short circuit on Sunny Island Charger 4
W882 1 Battery overvoltage Sunny Island Charger 4
W883 1 Overvoltage PV array Sunny Island Charger 4
W884 1 No PV voltage or short circuit on Sunny Island Charger 4
W885 1 Sensor error (or undertemperature) on Sunny Island Charger 4
W886 1 Overtemperature Sunny Island Charger 4
W887 1 No communication with Sunny Island Charger 4 for more than 24 h
F890 2 Interference at external measurement point of Multicluster Box
F891 2 Interference at external measurement point of Multicluster Box slave 1
F892 2 Interference at external measurement point of Multicluster Box slave 2
F893 2 Interference at external measurement point of Multicluster Box slave 3
Display no. Level Description
W915 1 DSP failure
F920 3 Error message via SiCom: General
F921 3 Error message via SiCom: Battery overvoltage
F922 3 Error message via SiCom: Battery undervoltage
F923 3 Error message via SiCom: Battery overtemperature
F924 3 Error message via SiCom: Battery undertemperature
F925 3 Error message via SiCom: Battery overtemperature in charge mode
F926 3 Error message via SiCom: battery undertemperature in charge mode
F927 3 Error message via SiCom: battery charging current too high
F928 3 Error message via SiCom: Battery charging current in charge mode
too high
F929 3 Error message via SiCom: Error in the battery
F930 3 Error message via SiCom: Short circuit
F931 3 Error message via SiCom: Internal error in battery management
Display no. Level Description
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