Energy Butler Hybrid Series
User Manual
47
M-TEC 10kW three-phase hybrid inverter is designed in accordance with grid operation standard, and conform to the
requirements of the safety and EMC. The inverter had passed a series of rigorous tests to ensure it runs sustainably and reliably
before shipment. When a fault occurs, the corresponding fault messages will display on the OLED display, and in this case, the
inverter might stop feeding into grid.
The fault messages and their corresponding troubleshooting methods are listed below:
8. Troubleshooting
8.1 Fault Messages
Error Message
Solution
Mains Lost
1. Check whether the mains supply is lost.
2. Check whether the AC breaker and terminal are well connected.
Grid Voltage Fault
1. Check whether the impendence of the AC cable is too high to lead the grid voltage increased. Change a thicker
AC cable if it is.
2. Extend the voltage protection range if it is allowed by the electricity company.
Grid Frequency Fault
1. Check whether the AC cable is correct and well connected.
2. Change to another country with wider protection range if it's allowed by the local electricity company.
DCI Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
ISO Over Limitation
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
GFCI Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
PV Over Voltage
Reduce the number of PV panels to make sure the open-circuit voltage of each string is lower than the inverter max
allowed input voltage.
Bus Voltage Fault
1. Check whether the input voltage is over the limitation.
2. Seek for help from the installer or manufacture.
Inverter Over Temperature
1. Check whether the input voltage is over the limitation.
2. Seek for help from the installer or manufacture.
SCI Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
SPI Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
E2 Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
GFCI Device Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
AC Transducer Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
Relay Check Fail
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
Flash Fault
1. Restart the inverter.
2. Seek for help from the installer or manufacture.
