15
16
7. Work Modes
Hybrid series inverters have the
following main work modes based on different conditions:
Mode1
：
Energy produced by the PV system is preferred for local
load. And the excess energy is first used for charging
batteries, then feeding to the grid.
Mode2
：
If there is no PV, battery energy is used for local load
first, the grid also can supply when the battery capacity
is not enough.
Mode3
：
If the grid is fault or there is no grid, the system can still
work, PV and batteries supply energy for local load.
Mode4
：
The battery can be charged by the grid, time and power
of battery charging can be set up flexibly.
An error message will be displayed on the APP if a fault occurs.
Table 8-1 is
the
Description of Error Message
Error message
Utility Loss
Fac Failure
PV Over Voltage
Over Temperature
Isolation Failure
Ground I Failure
Relay-Check Failure
DC Injection High
EEPROM R/W Failure
SPI Failure
DC Bus High
AC HCT Failure
GFCI Failure
Vac Failure
Battery Over Temperature
Battery Under Temperature
Battery Cell Voltage Differences
Battery Over Total Voltage
Battery Discharge Over Current
Battery Charge Over Current
Battery Under SOC
Battery Under Total Voltage
Battery Communication Fail
Battery Output Short
Description
Grid disconnected
Grid frequency no longer within permissible range
Overvoltage at DC input
Overtemperature on the case
Ground insulation impedance is too low
Overhigh ground leakage current
Relay self-checking failure
Overhigh DC injection
Memory chip failure
Internal communication failure
Overhigh BUS voltage
Output current sensor failure
Detection circuit of ground leakage current failure
Grid voltage no longer within permissible range
Battery Over Temperature
Battery Under Temperature
Li-Ion Battery Cell Voltage Differences
Li-Ion Battery Over Total Voltage
Battery Discharge Over Current
Battery Charge Over Current
Battery Capacity Low
Battery Under Total Voltage
Battery Communication Fail
Battery Output Short
8 Error Messages
Table 8-1
