Message Name
Information Description
Troubleshooting Suggestion
1. Confirm whether the inverter is connected
to an external EPM/meter to prevent
reverse current.
2. Confirm whether the inverter is controlled
by an external third-party device.
3. Confirm whether the power setting of the
inverter power control is limited.
4. Verify settings in section 6.6.7 and check
your meter readings.
1. No need to deal with it.
1. No need to deal with it, the device is in
normal operation.
1. Due to the requirements of local safety
regulations, when the grid voltage is high,
the Volt-watt working mode is triggered,
which generally does not need to be dealt with.
2. Inverter factory test errors causing this
mode to open, if you need to close, you can
close this mode in LCD, set the process:
Main menu → Advanced Settings →
Password 0010 → STD mode settings →
Working Mode → Working mode: NULL →
Save and exit.
1. Due to the requirements of local safety
regulations, when the grid voltage is high,
the Volt-watt working mode is triggered,
which generally does not need to be dealt with.
2. Inverter factory test errors causing this
mode to open, if you need to close, you can
close this mode in LCD, set the process:
Main menu → Advanced Settings →
Password 0010 → STD mode settings →
Working Mode → Working mode: NULL →
Save and exit.
LmtByEPM
LmtByDRM
LmtByTemp
LmtByFreq
LmtByVg
LmtByVar
The device's output is under
controlled
DRM Function ON
Over temperature power
limited
Frequency power limited
The device is in the
Volt-Watt mode
The device is in the Volt-Var
mode of operation
Off
Control device to shutdown
1. Turn on the device in the ON/OFF Setting.
.82.
8. Troubleshooting
8. Troubleshooting
.81.
LmtByUnFr
Under frequency limit
OV-G-F01
UN-G-F01
G-PHASE
G-F-GLU
NO-Grid
OV-G-V02
OV-G-V03
IGFOL-F
OV-G-V05
OV-G-V04
UN-G-V02
OV-G-F02
UN-G-F02
NO-Battery
Grid frequency exceeds the
upper frequency range
Grid frequency exceeds the
lower frequency range
Unbalanced grid voltage
Grid voltage frequency
fluctuation
Grid transient overvoltage
Grid transient overvoltage
Grid current tracking failure
Grid voltage RMS instanta-
neous overvoltage fault
Grid voltage exceeds the
upper voltage range
Grid voltage exceeds the
lower voltage range
Grid frequency exceeds the
upper frequency range
Grid frequency exceeds the
lower frequency range
Battery is not connected
UN-G-V01
Grid voltage exceeds the
lower voltage range
OV-G-V01
Grid voltage exceeds the
upper voltage range
Surge Alarm
On-site grid surge
1. Grid side fault, restart the device.
If it is still not eliminated, please contact the
manufacturer's customer service.
1. Confirm whether the power grid is abnormal.
2. Confirm that the AC cable is properly
connected.
3. Restart the system and check if the fault
persists.
1. Restart the system, confirm if that the fault
continues.
1. Check on information page 1 – Verify the
battery voltage is within standards.
2. Measure battery voltage at plug.
No grid
1. Confirm whether the power grid is abnormal.
2. Confirm that the AC cable is properly
connected.
3. Restart the system and check if the fault
persists.
Message Name
Information Description
Troubleshooting Suggestion
Standby
Bypass run
StandbySynoch
Off grid status to On grid
status
1. No need to deal with it.
GridToLoad
Grid to load
OV-Vbackup
Over-Load
Inverting overvoltage
Load overload fault
1. Check whether the backup port wiring is
normal
2. Restart the system, confirm that the fault
continues.
1. Backup load power is too large, or some
inductive load startup power is too large,
need to remove some backup load, or remove
the inductive load on the backup.