SMA America, LLC 20 Troubleshooting
Technical description SI4548_6048-US-TB_en-13 217
W815 1 Error Q5 contactor
F816 2 Error Q7 contactor
F817 4 Error Q9 contactor
F818 4 A phase is missing, Multicluster Box goes into "Failure" status
W824 1 Error Q4 contactor
W851 1 Pole of battery connection reversed or short circuit on
Sunny Island Charger 1
W852 1 Battery overvoltage Sunny Island Charger 1
W853 1 Overvoltage PV array Sunny Island Charger 1
W854 1 No PV voltage or short-circuit on Sunny Island Charger 1
W855 1 Sensor error (or undertemperature) on Sunny Island Charger 1
W856 1 Overtemperature Sunny Island Charger 1
W857 1 No communication with Sunny Island Charger 1 for more than 24 h
W861 1 Pole of battery connection reversed or short circuit on
Sunny Island Charger 2
W862 1 Battery overvoltage Sunny Island Charger 2
W863 1 Overvoltage PV array Sunny Island Charger 2
W864 1 No PV voltage or short-circuit on Sunny Island Charger 2
W865 1 Sensor error (or undertemperature) on Sunny Island Charger 2
W866 1 Overtemperature Sunny Island Charger 2
W867 1 No communication with Sunny Island Charger 2 for more than 24 h
W871 1 Pole of battery connection reversed or short circuit on
Sunny Island Charger 3
W872 1 Battery overvoltage Sunny Island Charger 3
W873 1 Overvoltage PV array Sunny Island Charger 3
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 Pole of battery connection reversed 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
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