52
Short description of the problem
Grid voltage
DC input voltage
Can you reproduce the failure? If yes, how?
Has this problem occurred in the past?
What was the ambient condition when the problem occurred?
Information concerning the PV panels:
Manufacturer name and model number of the PV panel
Output power of the panel
Voc of the panel
Vmp of the panel
Imp of the panel
Number of panels in each string
If it is necessary to replace the unit, please ship it in the original box.
11.2 System fault
System fault (system faults are mainly caused by system instead of inverter, please check the
items as instructed below before replacing inverter).
Error message
Description
Suggestion
Residual I High
Error: 201
Leakage current too high
1.Restart the invert.
2. If error message still exists, contact
Growatt.
PV Voltage High
Error: 202
The DC input voltage is exceeding
the maximum tolerable value.
1. Disconnect the DC switch immediately.
2. Check the voltage of each PV string
with multimerter.
3. If the voltage of PV string is lower than
500/550V, contact Growatt.
PV Isolation Low
Error: 203
Insulation problem
1. Check if panel enclosure ground
properly.
2. Check if inverter ground properly.
3. Check if the DC breaker gets wet.
4. Check the impedance of PV (+) & PV (-)
between ground (must be more than 25 K
Ω
or 550 K
Ω(VDE 0126)
). If the error message
is displayed despite the above checking
passed, contact Growatt.
AC V Outrange
Error: 300
Utility grid voltage is out of
permissible range.
Please switch off DC switch.
Check AC wiring, especially neutral and
ground wire.
