SUNFLX SEI-8K-SP - Troubleshooting Common Issues

48
7.2、Troubleshooting
Fault
code
Faults
Remedy
Display
No display on the screen
Check if the battery switch or PV switch is closed;
whether the switch is in the "ON" state; press any
button on the screen to exit the screen sleep
mode.
【06】
Battery overvoltage
protection
Check that the battery voltage does not exceed
the protection value. If it does, discharge the
battery until the voltage falls below the battery
over-voltage recovery point.
【01】
【04】
Battery undervoltage
protection
Charge the battery until it returns to the low
voltage disconnection recovery voltage.
【21】
Fan failure
Check if the fan is not turning or blocked by
foreign object.
【19】
【20】
Heat sink over
temperature protection
When the temperature of the device is cooled
below the recovery temperature, normal charge
and discharge control is resumed.
【13】
【14】
Bypass overload
protection, inverter
overload protection
① Reduce the use of power equipment;
② Restart the unit to resume load output.
【17】
Inverter short-circuit
protection
① Check the load connection carefully and clear
the short-circuit fault points;
② Re-power up to resume load output.
【09】
PV overvoltage
Use a multimeter to check if the PV input voltage
exceeds the maximum allowable input voltage
rated.
【03】
Battery disconnected
alarm
Check if the battery is not connected or if the
battery circuit breaker is not closed.
【40】
【43】
Parallel connection fault
Check if the parallel line is not connected well,
such as loose or wrong connection.
【35】
Parallel ID setting error
Check whether the setting of parallel ID number is
repeated.
【37】
Parallel current sharing
fault
Check if the parallel current sharing line is not
connected well, such as loose or wrong
connection.