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Maintenance/Troubleshooting
Fault
EN
EN
Noise emission
from the inverter.
In spite of high
radiation levels,
the inverter does
not feed the max-
imum power into
the grid.
Table 7:
Troubleshooting
9.10 "Fault" messages on the display/LED
Many fault signals indicate a fault in the grid. They are not operational faults of the inverter. The triggering levels are
defined in standards, e.g. VDE0126-1-1. The inverter shuts down if the values exceed or fall below the approved levels.
9.10.1 Display of status and fault messages
Display
FS (fault status)
OS (operating status)
Page 56
Possible cause
Explanation/remedy
Particular ambient
When there are certain ambient conditions, the units may emit
conditions.
audible noises.
•
Grid interference or grid failure caused by particular loads
(motors, machines, etc.) which are either connected to
the same point on the grid or located in the vicinity of the
inverter.
•
In cases of volatile weather conditions (frequent switch-
ing between sunny and cloudy conditions) or strong solar
radiation, a light hum may be audible due to the increased
power.
•
Under particular grid conditions, resonances may form
between the unit's input filter and the grid; these may be
audible even when the inverter is switched off.
These noise emissions do not affect the operation of the
inverter. They do not lead to loss of performance, failure,
damage or to a shortening of the unit's service life.
People with very sensitive hearing (particularly children) are
able to hear the high-frequency hum caused by the inverter's
operating frequency of approximately 17 kHz.
The device is too
Because the temperatures inside the unit are too high, the
hot and the system
inverter reduces its power to prevent damage to the unit. Note
limits the power.
the technical data. Ensure that the convection cooling is not
impeded from the exterior. Do not cover the cooling fins.
DC fuse faulty
A generator string is disconnected from the inverter owing to
a faulty fuse. Check why it has tripped by measuring all DC
strings using a clip-on ammeter.
–
Fault LED (red)
No action
Ensure sufficient cooling of the unit.
Remove any foreign bodies which are present on the unit.
Clean the cooling fins.
If there is no current flow in a string, the associated DC
fuse is faulty.
Check the no-load voltage and dimensioning of the PV
generator. Replace any damaged modules.
Replace the PV fuse with a fuse of the same size and type
(see section 9.5 on page 51).
•
Fault signal relay has switched.
ON
•
Feed-in was ended due to a fault.
•
The fault signal relay releases again.
OFF
•
The inverter feeds back into the grid again after a
country-specific time period.
Operating Instructions KACO blueplanet 29.0TL3
By
B
B
E
B,E
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Table of Contents
Troubleshooting
