9 Troubleshooting
SMA America, LLC
68
SB3-5TLUS22-IA-en-10
Installation Manual
3501
Insulation resist.
Check generator
The inverter has detected a ground fault in the
PV array.
Corrective measures:
• Check the PV plant for ground faults
(see Section 9.5).
3601
High discharge curr.
Check generator
The leakage current from the inverter and the
PV array is too high. A ground fault, a residual
current or a malfunction is present.
The inverter interrupts feed-in operation
immediately after exceeding a limiting value and
then automatically re-connects to the power
distribution grid.
Corrective measures:
• Check the PV plant for ground faults
(see Section 9.5).
3701
Residual current too
high
Check generator
The inverter has detected a residual current
through brief PV array grounding.
Corrective measures:
• Check the PV plant for ground faults
(see Section 9.5).
3801 to 3802
DC overcurrent
Check generator
The inverter switches off due to an overcurrent on
the DC side.
Corrective measures:
If this event occurs frequently:
• Check the design and circuitry of the
PV array.
3901 to 3902
Waiting for DC start
conditions
Start cond. not met
The input power or the input voltage of the
PV modules is insufficient for power distribution
grid feed-in.
Corrective measures:
• Wait for greater irradiation.
• If this event recurs at medium irradiation
levels, check the PV plant design and the
correct circuitry of the PV array.
Event number
Display message
Cause and corrective measures
