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3 Phase off Grid
Inverter Type
B-Plus 2.5
Cabinet
5KVA
≥9
≥3
8KVA
≥15
≥4
10KVA
≥18
≥5
15KVA
≥27
≥9
9 Normal issues and solutions
9.1 Normal alarm displayed on the SRC of SMA sunny island and the solution
SMA SRC
Reason
Solution
F221
External Alarm-Invalid Bat Type
Reset battery type to "Li" on SRC.
F920(XA01General)
1.All the batteries fail to communicate at
the same time
2.BMU and battery fail to communicate via
RS485
1.Inspect whether the RS485 communication
cable has been connected correctly and
securely
2.Inspect DIP switch settings according to the
setting of DIP switch guidance in user manual
3.Change BMU in cabinet
F921(XA02DcHiVolt)
External Alarm - Battery High Voltage
If the red led of the B-Plus 2.5 is on, please
contact the service provider to change the
battery. If not, check the system settings
according to the guidelines.
F922(XA03DcLoVolt)
External Alarm - Battery Low Voltage
F923(XA04DcHiTmp)
External Alarm - Battery High Temp
F924(XA05DcLoTmp)
External Alarm - Battery Low Temp
F925(XA06DcHiTmpC)
External Alarm - Battery High Temp
Charge
F926(XA07DcLoTmpC)
External Alarm - Battery Low Temp
Charge
