Fault LED (red)
Status
Explanation
LED
OS (operating status)
– The fault relay releases again.
Off
– The device feeds back into the grid again after a country-
specific time period.
11.8
Troubleshooting
The following table lists the possible status and fault messages, the ProLog© status messages that the device
can display by means of the LC display / web interface and the LEDs.
No. Grid
LED
LED
Display
Status description
Action
Pers
.
1
Waiting for feed-in
The start voltage (pre-)set in the device is
higher than the actual voltage. The device
waits for the solar voltage to exceed an ad-
justable value and for a stable grid.
Check whether the
start voltage was
set too high in the
menu.
B
2
Insufficient generator
voltage / insufficient battery
voltage
Insufficient generator voltage and power,
status before the transition to night shutdown.
Insufficient DC
voltage or voltage
fails under load (in-
sufficient DC power)
a) Compare the
voltage measured
with the no-load
voltage expected. b)
Check if the DC isol-
ator switch is
switched off c)
Check whether a D
B
3
Constant volt. control
No MPP control occurs. If sunlight conditions
are good, the message indicates that there is
an error in configuration. Constant volt. con-
trol When feed-in begins, a constant generator
voltage is fed in for a short period (75% of the
no-load voltage measured)
The constant
voltage can be en-
abled/disabled in
the service menu.
-
8
Self test in progress
Checks the shutdown of the power electronics
as well as the grid relay before feed-in mode.
If the device re-
mains in this status
continuously des-
pite adequate DC
voltage, this indic-
ates a device fault
E
10
Temperature in unit too high Possible causes: ambient temperature too
high, fan covered, device fault.
Cool off the area
around the inverter.
Uncover the fans.
Contact a qualified
electrician!
B E
17
"Powador-protect discon-
nection" or "External grid
protection shutdown"
The activated grid and system protection has
been tripped.
Wait for reactiva-
tion. Notify your au-
thorized electrician
if the fault occurs
repeatedly!
E
Manual
Maintenance and troubleshooting | 11
KACO blueplanet 15.0TL3 KACO blueplanet 20.0TL3
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