ABB TRIO-20.0-TL-OUTD-S-US-480

- 84 -
T011C5
5 - Troubleshooting
Display Message Causes Solution
W011
Bulk UV
(Bulk undervoltage)
The voltage over the bulk
capacitors does not reach the
threshold for the operation of the
inverter.
• Increase the value of the activation voltage (Vstart)
to have sufcient power from the PV generator during
the inverter’s grid connection.
• Check the input voltage on the inverter.
- If it does not exceed Vstart, check for the presence
of sufcient irradiation and the correct composition of
the system.
- If it exceeds Vstart, contact ABB technical support.
W012
Battery low
Low internal clock
battery voltage
Internal battery for maintenance
of the date/time settings is
discharged or damaged.
Replace the battery (CR2032) with the inverter
completely switched off (disconnect AC side and DC
side), and ensure the correct polarity.
W013
Clk fault
(Internal clock
failure)
The alarm appears when the
time shown on the display
differs by more than one minute
from the internal time of the
microprocessors and indicates
clock circuit malfunctioning.
This is an error inside the inverter that cannot be
resolved with external operations. If the alarm is
persistently repeated, contact ABB technical support.
W015
Island Detected
(Islanding
condition)
Inverter shut down due to
missing grid.
No action required: Grid must return before inverter
can reconnect.
W018
DC SPD tripped
(SPD DC
protection open)
Overvoltage surge arresters
situated on the DC side are
damaged. (-S1, -S1A and -S1B
models only).
Look at the inspection window present on the surge
arrester (DC side). If it is red, the surge arrester is
damaged and the cartridge must be replaced.
If the alarm status continues to be present even
though all the surge arresters have a green inspection
window, contact ABB technical support.
W019
AC SPD tripped
(SPC AC protection
open)
Overvoltage surge arresters
situated on the AC side are
damaged. (-S1A models only)
Look at the inspection window present on the surge
arrester (AC side). If it is red, the surge arrester is
damaged and the cartridge must be replaced.
If the alarm status continues to be present even
though all the surge arresters have a green inspection
window, contact ABB technical support.
W022
Q-Mode changed
(Reactive power
mode was
changed)
Variation in the means of
managing reactive power.
This change is made through
the display or advanced
conguration software.
Notication of change that is saved in the historical
log of inverter events.