Growatt WIT 50-100K-US - Page 74

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NE Fault
Neutral-to-Ground
voltage is too low
1. Check whether the N line on the inverter side
with PV negative grounding is short-circuited
with the ground cable and whether the output side
is isolated with a transformer.
2. If the error message persists, please contact
Growatt support.
Error 311
Export limitation fail-safe
1. After shutdown, check the connection of the
CT and the meter.
2. If the error message persists, please contact
Growatt support.
Error 400
DCI bias abnormal
1. Restart the inverter.
2. If the error message persists, contact Growatt
support.
Error 402
High DC component in
output current
1. Restart the inverter.
2. If the error message persists, contact Growatt
support.
Error 404
Bus voltage sampling
abnormal
1. Restart the inverter.
2. If the error message persists, please contact
Growatt support.
Error 405
Relay fault
1. Restart the inverter.
2. If the error message persists, please contact
Growatt support.
Error 408
Over-temperature
1. After shutdown, check the temperature of the
inverter and restart the inverter after the
temperature is within the acceptable range.
2. If the error message persists, please contact
Growatt support.
Error 409
Bus voltage abnormal
1. Restart the inverter.
2. If the error message persists, please contact
Growatt support.
Error 411
Internal communication
failure
1. Check the wiring of the communication board
after shutdown.
2. If the error message persists, please contact
Growatt support.
Error 412
Temperature sensor
disconnected
1. Check if the temperature sensor module is
properly connected.
2. If the error message persists, please contact
Growatt support.
Error 413
IGBT drive fault
1. Restart the inverter.
2. If the error message persists, please contact
Growatt support.
Error 414
EEPROM error
1. Restart the inverter.
2. If the error message persists, please contact