ZCS TL Series User Manual page 64

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Manual of 07/06/2019 Rev. 1.1 "User Manual for 20K-33KTL"
Identificazione: MD-AL-GI-00
Rev. 4.0 del 31.01.18 - Applicazione: GID
PVUVP
Vlvrtlow
Reserved
PvOVP
IpvUnbalance
PvConfigSetWrong
GFCIFault
The input voltage is
too low.
The feed-through
voltage is too low.
Reserved
The input voltage is
too high.
The input current is
not balanced.
Incorrect input mode
Faulty automatic
differential circuit
breaker.
local grid operator.
Check whether too few photovoltaic
modules have been connected in
series in a PV string: therefore, the
voltage (Vmp) of the PV string is
lower than the minimum operating
voltage of the inverter. In this case,
adjust the number of photovoltaic
modules connected in series to
increase the voltage of the PV string,
so that it falls within the input voltage
range of the inverter.
Check the AC grid connections, and if
they are correct, contact technical
support.
Reserved
The inverter automatically returns to
its normal operating state after
correct adjustment.
Check whether too many photovoltaic
modules have been connected in
series in a PV string: the voltage (Voc)
of the PV string is therefore higher
than the maximum input voltage of
the inverter. In this case, adjust the
number of photovoltaic modules
mounted in series to decrease the
voltage of the PV string, so that it falls
within the input voltage range of the
inverter. The inverter automatically
returns to its normal operating state
after the correct adjustments.
Check the configuration of the input
mode (parallel mode / independent
mode) of the inverter, as indicated in
Section 6.3 (C) "6. Input Mode" of this
user manual; if it is incorrect, change
it according to Section 6.3(A).
If the error occurs occasionally, the
probable cause is that the external
circuits have temporary faults.
The inverter automatically returns to
its normal operating state after the
error has been fixed.
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