SMA STP 8000TL-10 - Manual (Page 78)

11 Messages SMA Solar Technology AG
78 STP8-17TL-IA-en-31 Installation Manual
3801,
3802 < DC overcurrent >
< Check generator >
On the DC side of the inverter, an
overcurrent has been detected and the
inverter has briefly interrupted feed-in. If this event occurs frequently:
• Check the design and the circuitry of
the PV array.
3901,
3902 < Waiting for DC start conditions >
< Start cond. not met >
The input power or input voltage of the PV
modules is insufficient for feeding into the
electricity grid. • Wait until irradiation is higher.
• If necessary, increase the voltage
limit for the start of feed-in if the event
occurs frequently in the morning
(parameter setting via
communication).
• If this event recurs at medium
irradiation levels, check the PV plant
design and the correct circuitry of
the PV array.
4001 < String X defect. >
< Do not disconn. ESS >
The "X" stands for the affected string. There
are either reverse currents in the string or
the string polarity is reversed. Further
strings may also be affected. The PV array
is short circuited.
In exceptional circumstances, this error
message may be triggered by soiling or
shading of the modules (e.g., by leaves or
snow). • Disconnect the inverter after dark
(see Section 9 "Disconnecting the
Inverter from Voltage Sources",
page 63).
• Check the design and the circuitry of
the PV array (see Section 6.4.1
"Conditions for DC Connection",
page 34).
• If irradiation is sufficient, check
whether the same voltage is present
at the string inputs A1 to A5.
If not, one of the PV modules is
possibly defective.
4002 < String X low power
< Check generator >
The "X" stands for the affected string. The
string monitoring has either failed or
detected a weak string. • Check the string indicated.
Event no. Display message and cause Corrective measures