Routine Maintenance - Goodwe ETC Series User Manual

09 Maintenance
No. Fault
7 GridFreqFault
8 EepromFault

9.5 Routine Maintenance

Maintaining Item
System Clean
DC switch, battery
breaker, AC breaker,
and load breaker
Electrical Connection
THDi Test
Cause
Utility grid
exception. The
actual grid
frequency exceeds
the requirement
of the local grid
standard.
Data memory
device exception.
Maintaining Method
Check the air intake, and air outlet for
foreign matter or dust.
Turn the switches or breakers on and off
ten consecutive times to make sure that it
is working properly.
Check whether the cables are securely
connected. Check whether the cables are
broken or whether there is any exposed
copper core.
For Australia requirements, in the THDi
test, there should add Zref between
inverter and mains.
L: 0.15 Ω + j0.15 Ω ; N:0.1 Ω + j0.1 Ω
User Manual V1.0-2023-04-30
Solutions
1. If the problem occurs occasionally, the
utility grid may be abnormal temporarily.
The inverter will recover automatically
after detecting that the utility grid is
normal.
2. If the problem occurs frequently, check
whether the grid frequency is within the
permissible range.
• Contact the local power company if the
grid frequency exceeds the permissible
range.
• Modify the overfrequency protection
threshold or disable the overfrequency
protection function after obtaining the
consent of the local power company
if the grid frequency is within the
permissible range.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
50
Maintaining Period
Once 6-12 months
Once a year
Once 6-12 months
As needed.