60
Trip by DCI high
Inverter detected high DC injection
current on Grid terminal
Restart inverter. If the alarm persists,
contact the supplier.
PV short circuit
Inverter detected a short circuit in PV
input
1.
Check whether each PV string is
connected correctly.
2. Restart inverter. If the alarm persists,
GFCI module is abnormal
Restart inverter. If the alarm persists,
contact the supplier.
Bat volt high Battery voltage too high
Check whether the battery voltage
exceeds 59.9V; battery voltage should be
within inverter specification.
Bat volt low Battery voltage too low
Check whether the battery voltage is
under 40V; battery voltage should be
within inverter specification.
Bat open Battery is disconnected from inverter
Check battery breaker or fuse. Reconnect
as needed.
Off-grid overload Overload on Load terminal
Check if load power on inverter LOAD
terminal is within inverter specification.
Off-grid overvolt Load voltage is too high
Restart inverter. If the alarm persists,
contact the supplier.
Meter reversed Meter connection is reversed
Check if the meter communication cable
is connected correctly on the inverter and
Off-grid dcv high
High DC voltage component on load
output when running off-grid
Restart inverter. If the alarm persists,
contact the supplier.
RSD Active Rapid shutdown activated Check if the RSD switch is pressed.
Para phase loss Phase losing in parallel system
Confirm that the wiring of the inverter is
correct. If the Master is set to 3-phase
Master, the number of parallel inverters
must be ≥3. (The grid input for each
inverter should be connected correctly to
Grid L1, L2, L3.) If the Master is set to 2x
208 Master, the number of parallel
inverters needs to be ≥2. (And the grid
input of each inverter should be
connected correctly to Grid L1, L2, L3.)
Para no BM set Master is not set in the parallel system
Set one of the inverters in the parallel
system as the Master.
Para multi BM set
Multiple Primaries have been set in the
parallel system
There are at least two inverters set as the
Master in the parallel system. Keep one
Master and set the other as Slave.
15. STANDARDS AND CERTIFICATIONS
The EG4
®
FlexBOSS21 is ETL & cETL listed and complies with national and international standards for
safety and reliability when connected to the grid.
Safety
• UL1741, SA, SB
• RSD NEC 2020:690.12 (PENDING)
• AFCI NEC 2020:690.11/UL1699B
• GFDI NEC 2020:690.41(B)
• CSA 22.2.107.1:2016 Ed. 4
• CSA 22.2.330:2017 Ed. 1