SMA SUNNY BOY 3800TL-US Installation Manual page 64

11 Troubleshooting
Event number
3501
3601
3701
3801 to 3802
3901 to 3902
4301
64 SB3-5TLUS22-IA-en-16
Display message
Insulation resist.
Check generator
High discharge curr.
Check generator
Resid.curr.too.high
Check generator
DC overcurrent
Check generator
Waiting for DC start
conditions
Start cond. not met
Electr. arc detected
Check generator
Cause and corrective measures
The inverter has detected a ground fault in the
PV array.
Corrective measures:
• Check the PV system for ground faults
(see Section 11.5).
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).
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).
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.
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.
The inverter has detected an electric arc.
Corrective measures:
• See Section 11.7 for troubleshooting.
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