42
Chapter 4 Operation
Warn/Protect/
Fault
Definition Possible
causes
Recommended
solutions
6
、
GFCIErr
The leakage
current of the
system is too large
1
、
Parasitic
capacitance of PV
panels is too large
because of
environmental
influence
2
、
PV grounding fault
3
、
Inverter has
internal problems
1
、
Observe for 10
minutes and see
whether the alarm will
be eliminated
automatically;
2
、
Check whether
electrical connection
has abnormalities;
3
、
Contact after-sale
service personnel
7
、
IsolationErr
Isolation
resistance
between PV+/PV-
and the earth
exceeds specified
range
1
、
Air humidity is too
high
2
、
Isolation
resistance is reduced
by other factors
1
、
Observe for 10
minutes and see
whether the alarm will
be eliminated
automatically;
2
、
Check the insulation
of PV system
3
、
Contact after-sale
service personnel
8
、
ACContErr AC contactor fault
1
、
AC contactor is
damaged;
2
、
Inverter has
internal problems
1
、
Contact after-sales
service
personnel
9
、
EmergencyStp
Inverter is in the
status of emergent
stop
1
、
Emergency stop
button is pressed
2
、
Inverter has
internal problems
1
、
Check whether
emergency stop
button is pressed. If
so, restore the button;
2
、
Contact after-sale
service personnel if the
problem persists
