Maintenance
ESS Inverter User Manual
83
C2
Inverter over dc-bias
current
1.
If the alarm occurs occasionally, possibly the power grid voltage is
abnormal for a short time, and no action is required.
2.
If the alarm occurs repeatedly, and the inverter fails to generate power,
contact the customer service center.
C3
Inverter relay abnormal
1.
If the alarm occurs occasionally, possibly the power grid voltage is
abnormal for a short time, and no action is required.
2.
If the alarm occurs repeatedly, pls. refer to the suggestions or measures
of Grid over voltage. and the inverter fails to generate power, contact the
customer service center. If there is no abnormality on the grid side, the
machine fault can be determined. (If you open the cover and find traces of
damage to the relay, it can be concluded that the machine is faulty.) And
pls. contact the customer service center.
CN
Remote off
1.
Local manual shutdown is performed in APP.
2.
The monitor executed the remote shutdown instruction.
3.
Remove the communication module and confirm whether the alarm
disappears. If it does, replace the communication module. Otherwise,
please contact the customer service center.
C5
Inverter over temperature
1.
If the alarm occurs occasionally, the inverter can be automatically
restored, no action required.
2.
If the alarm occurs repeatedly, pls. check the installation site for direct
sunlight, good ventilation, and high ambient temperature (Such as
installed on the parapet). If the ambient temperature is lower than 45 ° C
and the heat dissipation is good, contact the customer service center.
C6
GFCI abnormal
1.
If the alarm occurs occasionally, it could have been an occasional
exception to the external wiring, the inverter can be automatically
recovered, no action required.
2.
If it occurs repeatedly or cannot be recovered for a long time, pls.
contact customer service to report repair.
B7
PV string reverse
Check and modify the positive and negative polarity of the input of the
circuit string.
C8
Fan abnormal
1.
If the alarm occurs occasionally, pls. restart the inverter.
2.
If it occurs repeatedly or cannot be recovered for a long time, check
whether the external fan is blocked by foreign objects. Otherwise, contact
customer service.
C9
Unbalance Dc-link voltage
1.
If the alarm occurs occasionally, the inverter can be automatically
recovered and no action is required.
2.
If the alarm occurs repeatedly, the inverter cannot work properly. Pls.
contact the customer service center.
CA
Dc-link over voltage