SMA SC 500CP XT - Manual (Page 71)

Error no. Explanation Inverter behavior Corrective measures
S1 S2 R
3501 The insulation monitoring device
has measured a too low ground-
ing resistance. C C ‒ • Check the PV array for ground faults.
3502 The GFDI has tripped. C C ‒ • Check the PV array for ground faults.
3504 The insulation monitoring device
has detected an insulation error.
If the parameter IsoErrIgn is set to
On, this error is ignored.
W W ‒ • Check the PV array for ground faults.
3507 A ground fault has occurred on
the ungrounded terminal of the PV
array. Q Q ‒ • Check the PV array for ground faults.
3510 The inverter has detected an insu-
lation error on the inverter bridge. Q Q ‒ • Check the PV array for ground faults.
3511 The inverter has detected an insu-
lation error. W W ‒ • Check the PV array for ground faults.
3512 The Remote GFDI has detected a
permanent ground fault. Q Q ‒ • Check the PV array for ground faults.
3515 A ground fault detected by
Soft Grounding has been ignored. W W ‒ • Check the PV array for ground faults.
3517 Insulation measuring is being per-
formed. W W ‒ ‒
3601 Leakage current to ground has oc-
curred in the PV array or the
threshold defined in parameter
RisoCtlWarn has been reached. W W ‒ • Check the grounding and equipotential
bonding.
• Check the module wiring and system
design.
• Check the parameter RisoCtlWarn.
3803 The PV array current is too high. 1 min D ‒ • Check the DC input current.
• Check the module wiring and system
design.
4003 Reverse currents detected in the PV
array or DC connection polarity
reversed. 30 s Q ‒ • Check the PV modules for short circuits.
• Check the module wiring and system
design.
• Check the DC terminals for correct
polarity.
• Check the functionality of the entire
string.
7 Troubleshooting SMA Solar Technology AG
User Manual 71 SCCPXT-BA-E4-en-54