Installation Guide

11 Troubleshooting SMA America, LLC
64 SB3-5TLUS22-IA-en-16 Installation Manual
3501 Insulation resist.
Check generator
The inverter has detected a ground fault in the
PV array.
Corrective measures:
• Check the PV system for ground faults
(see Section 11.5).
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 utility grid.
Corrective measures:
• Check the PV system for ground faults
(see Section 11.5).
3701 Resid.curr.too.high
Check generator
The inverter has detected a residual current
through brief PV array grounding.
Corrective measures:
• Check the PV system for ground faults
(see Section 11.5).
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 utility grid feed-in.
Corrective measures:
• Wait for higher irradiation.
• If this event recurs at medium irradiation
levels, check the PV system design and the
correct circuitry of the PV array.
4301 Electr. arc detected
Check generator
The inverter has detected an electric arc.
Corrective measures:
• See Section 11.7 for troubleshooting.
Event number Display message Cause and corrective measures