Error - Growatt WIT 50K-A User Manual

Warning Description
DC component over high in
Warning 601
output voltage
Off-grid bus voltage too
Warning 605
low
Warning 609 Balanced circuit abnormal
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Suggestion
1. Restart the inverter.
2. If the error message persists, contact
Growatt support.
1. Check if the load power exceeds the
upper limit.
2. Restart the inverter. If the error
message persists, contact Growatt
support.
1. Restart the inverter.
2. If the error message persists, contact
Growatt support.

9.2.2 Error

The error code indicates that the device is damaged or the configurations are abnormal.
Only qualified and trained electrical technicians are allowed to rectify the faults. The error
message will disappear after the fault is rectified. If the problem persists, please contact
Growatt.
Table 9.2 Error codes
Error Code Description
An arc fault has been
AFCI Fault
detected
An excessively high leakage
GFCI High
current has been detected
DC input voltage exceeds
PV Voltage High
the upper threshold
PV panels have low
PV Isolation Low
insulation resistance
PV string reversely
PV Reversed
connected
Grid voltage is beyond the
AC V Outrange
permissible range
No utility grid connected or
No AC
utility grid power failure
The voltage difference
NE Abnormal between the N line and the
PE cable is abnormal
Suggestion
1. After shutdown, check the
connection of the PV string.
2. Restart the inverter.
3. If the error message persists, please
contact Growatt support.
1. Restart the inverter.
2. If the error message persists, please
contact Growatt support.
1. Disconnect the DC switch
immediately and check the voltage.
2. If the DC input voltage is within the
permissible range and the error
message persists, please contact
Growatt support.
1. Check if the PV strings are properly
grounded.
2. If the error message persists, please
contact Growatt support.
1. After shutdown, check if the PV
string is reversely connected to the
inverter.
2. Restart the inverter.
3. If the error message persists, please
contact Growatt support.
1. Check the grid voltage.
2. If the grid voltage is within the
permissible range and the error
message persists, please contact
Growatt support.
1. After shutdown, check the AC
wiring.
2. If the error message persists, please
contact Growatt support.
1. After shutdown, check if the ground
cable is reliably connected.
2. If the error message persists, please
contact Growatt support.
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