20 Troubleshooting SMA America, LLC
216 SI4548_6048-US-TB_en-13 Technical description
20.8.8 AUX Category
W749 1 Short circuit or cable break on transformer temperature sensor slave 3
W750 1 Short circuit or cable break on heat sink temperature sensor slave 1
W751 1 Short circuit or cable break on heat sink temperature sensor slave 2
W752 1 Short circuit or cable break on heat sink temperature sensor slave 3
W753 1 Invalid system time
F754 2 Communication with Multicluster Box interrupted
W755 1 Battery Preservation Mode 1 (LBM)
W756 1 Battery Preservation Mode 2 (LBM)
W757 1 Battery Preservation Mode 3 (LBM)
W758 1 No output voltage measured from the main cluster
W759 1 No output voltage measured from slave 1 of main cluster
W760 1 No output voltage measured from slave 2 of main cluster
W761 1 No output voltage measured from slave 3 of main cluster
F781 4 Error at a slave which leads to shutdown of the system
(for the "RunMod" function)
F782 4 Failure of the grid monitoring
F783 2 Slave does not receive a Syncpuls
F784 2 Slave does not receive a Syncpuls Slave 1
F785 2 Slave does not receive a Syncpuls Slave 2
F786 2 Slave does not receive a Syncpuls Slave 3
Display no. Level Description
F801 4 Plausibility check of contactors in a Multicluster Box failed
W804 1 Grid operation not possible
W805 1 Generator operation not possible
F806 4 Multicluster Box settings do not match software settings.
W807 1 No valid line voltage for requested grid operation
W808 1 Error Q4 contactor
F809 4 Error Q10 contactor (load shedding)
F810 4 Error in 15 V supply of the Multicluster Box
F811 4 Error in 24 V supply of the Multicluster Box
Display no. Level Description
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