20 Troubleshooting SMA Solar Technology America LLC
214 SI4548-6048-US-BE-en-21 Operating Manual
20.8.4 Category GEN
20.8.5 Category GRD
20.8.6 Category RLY
20.8.7 Category SYS
Display no. Level Description
W401 1 Reverse power protection (generator)
W402 1 Generator management switches into the locked error status
(Fail-Lock)
Display no. Level Description
W501 1 Grid reverse current prevented (quick grid disconnection)
W502 1 Grid reverse current prevented (quick grid disconnection) slave 1
W503 1 Grid reverse current prevented (quick grid disconnection) slave 2
W504 1 Grid reverse current prevented (quick grid disconnection) slave 3
W505 1 Feed-in current is greater than the nominal grid current (parameter
"#232.03 GdCurNom")
W506 1 Feed-in current is greater than the nominal grid current (parameter
"#232.03 GdCurNom") on slave 1
W507 1 Feed-in current is greater than the nominal grid current (parameter
"#232.03 GdCurNom") on slave 2
W508 1 Feed-in current is greater than the nominal grid current (parameter
"#232.03 GdCurNom") on slave 3
Display no. Level Description
F605 4 Transfer relay does not open
W606 1 Transfer relay does not open slave 1
W607 1 Transfer relay does not open slave 2
W608 1 Transfer relay does not open slave 3
Display no. Level Description
F702 5 DSP reset
F703 2 Timeout during a task
F704 4 Invalid DSP calibration
W705 1 Watchdog DSP has been tripped
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