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Alpha ESS Co., Ltd.
Page 65 of 75
Your Smart Energy
100022
MPPT2_SW_OCP
1. Try to reduce the PV power.
2. Restart the inverter to see if the fault still exists. If it still
exists, contact service.
100023
MPPT2_HW_OCP
100024
MPPT2_OTP
1. Try to lower the ambient temperature.
2. Make sure that the inverter is installed according to the
manual and there is no shelter around the inverter.
3. After the inverter is powered off and waiting for 30
minutes, then restart it. If the fault still exists, contact ser-
vice.
100025
BAT_OVP
Check whether the actual battery voltage exceeds the bat-
tery charging cut-off voltage by more than 20V.
100026
BAT_UVP
Check whether the actual battery voltage is lower than the
battery discharge cut-off voltage.
100027
Battery_lose
Confirm that the wiring is normal, and check whether the
battery voltage sampling value is less than 75V.
100028
BAT_OTP
1. Try to lower the ambient temperature.
2. Make sure that the inverter is installed according to the
manual and there is no shelter around the inverter.
3. After the inverter is powered off and waiting for 30
minutes, then restart it. If the fault still exists, contact ser-
vice.
100029
BAT1_charge_OCP
1. Try to reduce battery power.
2. Restart the inverter to see if the fault still exists. If it still
exists, contact service.
100030
BAT1_discharge_OCP
100031
BAT2_charge_OCP
100032
BAT2_discharge_OCP
100033
BAT1_HW_OCP
100034
BAT2_HW_OCP
100035
INV_OTP
1. Try to lower the ambient temperature.
2. Make sure that the inverter is installed according to the
manual and there is no shelter around the inverter.
3. After the inverter is powered off and waiting for 30
minutes, then restart it. If the fault still exists, contact ser-
vice.
100036
INV_OVP
The effective value of grid voltage exceeds the maximum
protection value of national standard voltage.
100037
INV_UVP
1. Whether the off grid output terminal is short circuited or
has impact load.
2. Restart the inverter to see if the fault still exists. If it still
exists, contact service.
100038
Output_DC_
over_current
Restart the inverter to see if the fault still exists. If it still ex-
ists, contact service.
100039
INV_OCP
1. Check whether the off grid output terminal is overloaded,
short circuited or has impact load.
2. Restart the inverter to see if the fault still exists. If it still
exists, contact service.
100040
INV_HW_OCP
Restart the inverter to see if the fault still exists. If it still ex-
ists, contact service.
100041
Output_DC_
over_voltage