10 Troubleshooting
SMA Solar Technology AG
80
SCCP-JP-BA-A4-en-12
User Manual
3504
Insulation monitoring device has
detected an insulation error. Since
the parameter
IsoErrIgn
is set to
On
, this error is ignored.
W
W
‒
• Check PV array for ground
faults.
3507
Ground fault has occurred on
ungrounded pole of PV array.
Q
Q
‒
3510
The Sunny Central has found an
insulation error on the inverter
bridge.
Q
Q
‒
3511
The Sunny Central has found an
insulation error.
W
W
‒
3512
The Remote GFDI has detected a
permanent ground fault.
Q
Q
‒
3515
A ground fault detected by Soft
Grounding has been ignored.
W
W
‒
3601
Leakage current to ground is
present in the PV array, or the
threshold defined in parameter
RisoCtlWarn
has been reached.
W
W
‒
• Check grounding and
equipotential bonding.
• Check module wiring and
PV system design.
• Check the
RisoCtlWarn
parameter.
3803
Current of PV array is too high.
1 min
D
x
• Check DC input current.
• Check module wiring and
PV system design.
4000
String-failure detection has detected
a defective string. Error number
appears on display only.
W
W
• Read off the number of the
defective string in the
instantaneous value
SSMUWrnCode
.
4003
Reverse currents detected in the
PV array, or DC terminal
reverse-poled.
30 s
Q
‒
• Check PV modules for short
circuits.
• Check module wiring and
PV system design.
• Check DC terminals for correct
polarity.
• Check the functionality of the
entire string.
4004
String-current monitoring has
detected a defective string.
W
W
-
• Check the functionality of the
entire string.
Error no.
Explanation
Behavior of the
Sunny Central
Corrective measures
S 1
S 2
R