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Alpha ESS Co., Ltd.
Page 34 of 43
Your Smart Energy
7.2 Troubleshooting
7.2.1
Inverter Error Troubleshooting
Error
No.
Error description
Solution
100000 Grid_OVP
1. Check whether Grid is abnormal.
2. Confirm whether the grid cable connection
is normal.
3. Restart inverter and ensure whether the
fault is existing.
100001 Grid_UVP
100002 Grid_OFP
100003 Grid_UFP
100005 BUS_OVP1
Restart inverter and ensure whether the fault
is existing.
100006 BUS_OVP2
100007 Insulation_fault
1.Check whether PV cable connection is
reliable.
2.Check whether PV cable is damaged.
100008 GFCI_fault
Restart inverter and ensure whether the fault
is existing.
100009 Leakage current test failure
100010 Grid_relay_fault
100011 Over_Temperature
1. Check whether the environment around
inverter is with poor heat dissipation.
2. Confirm whether inverter installation meet
the installation requirements.
100014 M_S_com_fault
Restart System and ensure whether the fault
is existing.
100038 Output_DC_over_current
100043 Output_overload
1. Check whether Backup load is overload.
2. Restart inverter and confirm whether the
fault is existing.
100044 APU_UVP
Restart System and ensure whether the fault
is existing.
100046 DC_Input_Disturbance
100047 Grid disturbance
1. Check whether Grid is abnormal.
2. Confirm connection of gird cable is nor-
mal.
3. Restart inverter and ensure whether the
fault is existing.
100048 Grid_unbalance
100049 Frequency_jitter
100050 Grid_overcurrent
100051 Grid_current_track_fault
Restart inverter and ensure whether the fault
is existing.
100052 Backup_ovp
1. Check whether Backup port cable is nor-
mal.
2. Restart inverter and confirm whether the
fault is existing.
100053 Dc_bus_unbalancevolt
Restart inverter and ensure whether the fault
is existing.
100054 Dc_bus_undervolt
100055 Dc_bus_unbalancevolt2
100056 IGBT_over_current
Restart inverter and ensure whether the fault
is existing.
100057 Grid_disturbance2
1. Confirm whether Grid is distorted severely.
2.Check whether PV cable connection is reli-
able.
100058 AFCI_check_protect
1.Check whether PV cable connection is
reliable.
