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468 Input phase sequence error input reversed
Check whether the phase sequence of
the mains input voltage is reversed
469 Input phase loss
Input missing 1 or 2 phases
Check whether the mains input
voltage is abnormal
470 Input voltage imbalance
The difference between the maximum
and the lowest input voltage is 17V
Check whether the mains input
voltage is abnormal
471 input voltage rapid
inspection abnormal
The instantaneous value of the input
voltage is higher than 1.35 times rated
or lower than 0.45 times rated
Check whether the mains input
voltage is abnormal
472 Input overcurrent
Input current is higher than 1.35 times
rated current
Check if the input voltage is too low
473 Input current imbalance
The difference between the maximum
and minimum input current is 0.25
times the rated current
Please replace the power board
474 Input null wire loss
Abnormal three-phase input voltage
DC
Please check whether the input neutral
line is connected normally;
477 Frequent switching between
grid and battery
Mains and battery switching over 5
times within 1 hour
Check whether the mains input
voltage is abnormal
480 Battery disconnect
battery is not connected
Please check if the battery is
connected;
482 Battery self check fail
There is an abnormal PFC alarm
during the battery test
Please replace the power board
483 Battrey overvoltage
The battery voltage is 10V higher than
the equalizing voltage
Please check whether the battery
voltage is abnormal;
484 Battery undervoltage DOD
When the battery voltage is lower than
1.1 times the EOD voltage, it can be
set
Please check whether the battery
voltage is abnormal;
489 Battery charging overcurrent The battery current is 1.1 times greater
than the limit current
Please replace the I/O board
491 Open circuit of battery fuse/
charger switch
Charger switch open
Please replace the I/O board
492 Charger switch short circuit Charger switch short circuit
Please replace the I/O board
494 Reverse battery connection battery reversed
Please check whether the battery is
connected properly;
521 PFC sofe start fail
The busbar soft-start stage does not
reach the set voltage
Please replace the power board
528 Rectifier IGBT module
overtemperature
Rectification temperature is higher
than 80 degrees
Please check whether the fan is
abnormal;
529 Rectifier E2PROM
read-write failure
Rectifier E2PROM read and write
failed
Please replace the I/O board
546 Charger sofe start fail
The charger voltage soft start does not
reach the battery voltage
Please replace the I/O board
