MCU self-check: Abnormalness detected
Corrective Measures
A. Disconnect the inverter from the utility grid and the PV array
B. Reconnect it after LED turns off
C. If this fault is still being displayed, please contact the service.
AC current sensor detect current abnormal in the start process.
If this fault is still being displayed, please contact the service.
If it is unrecoverable, replace inverter
GFCI sensor self-check abnormal
Disconnect the inverter from the utility grid and the PV array, and reconnect it after LED turns off.
If this fault is still being displayed, please contact the service.
The difference between INV voltage and output voltage exceeds limit.
If this fault is still being displayed, please contact the service.
In the process of power on and start-up, the insulation impedance of PV + and PV – to ground is detected. When the detection insulation impedance is less than 200kohm, it is judged as insulation fault.
If all above are normal, please contact the service.
In the process of power on and start-up, the insulation impedance of PV + and PV – to ground is detected. When the detection insulation impedance is less than 200kohm, it is judged as insulation fault.
If all above are normal, please contact the service.
Residual current out of permission value range.
If this fault is still shown, contact the service.
Heat sink and internal environment temperature higher than 85 degree.
Please confirm:
If all above is normal, contact the service.
Inverter failed to detect a grid voltage.
If it happens occasionally, it belongs to the short-time abnormality of the power grid, the inverter will return to normal operation after detecting that the power grid is normal, and there is no need to deal with it. If it cannot be recovered for a long time, please confirm:
If this fault is still being shown, contact the service.
Grid voltage exceeds the stated range in accordance with Local Safety Regulations
If it happens occasionally, it belongs to the short-time abnormality of the power grid, the inverter will return to normal operation after detecting the normal power grid, and there is no need to deal with it.
In case of frequent occurrence but automatic recovery, please confirm if the grid voltage is outside the permissible range due to local grid conditions, try to modify the values of the monitored operational limits after informing the electric utility company first.
If it cannot be recovered for a long time, please confirm:
Copy right@2020 Suzhou HYPONTECH Co.,Ltd All Rights Reserved