9
Utility grid
disconnected
inverter
detected grid
voltage failed
1. 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.
2. If it cannot be recovered for a long
time, please confirm:
whether the AC circuit breaker is
disconnected
whether the AC terminal or fuse is in
good contact
whether the power supply line is normal
If this fault is still being shown, contact
the service.
10
Grid voltage
exceeds the
permissible
range
grid voltage
exceeds the Safety
regulations
1. 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.
2. 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.
3. If it cannot be recovered for a long
time, please confirm:
· whether the AC circuit breaker is
disconnected
· whether the AC terminal is in good
connection
·
·
whether the power supply line is normal
whether the AC cable wiring (such as wire
length and wire diameter) complies with
the user manual guidance
whether the safety regulation settings are
normal
11
Grid
frequency
exceeds the
permissible
range
grid frequency
exceeds the safety
regulations
1. 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.
2. 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.
operational limits after informing the
electric utility company first.
3. If it cannot be recovered for a long time,
please confirm:
· whether the AC circuit breaker is disconnected
· whether the AC terminal is in good connection
· whether the power supply line is normal
· whether the safety regulation settings are
normal
12
DC
component of
the electricity
exceeds the
permissible
range
the current
exceeds 1A in static
state and 4A in
dynamic state
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.
13
EEPROM
Error, e.g.
transition
disturbance
Micro CPU read
EEPROM failed
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.
14
Internal
communica-
tion fault
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.
Master CPU
communicate
with slave CPU
abnormal
15
Bus-voltage
too high
Bus-voltage is
greater than 600V
Check the open-circuit voltages of the
strings and make sure it is below the
maximum DC input voltage of the
inverter. If the input voltage lies within the
permissible range while the fault occurs,
please contact the service.
16
Bus-voltage
too low
Check the open circuit voltage of the
strings and make sure it is below the
maximum DC input voltage of the inverter.
If the input voltage lies within the
permissible range while the fault occurs,
please contact the service.
17
DRM S9 Error
DRM switch S9
fault
Check the connection of DRM device. If
the DRM device is connected normally
while this fault occurs, please contact
the service.
·
Bus-voltage is 20V
lower than
standard bus
voltage
27
26
V.
2
V.
2
