Kaco blueplanet 40.0 TL3, Instruction Manual, Page: 42 / 52

Maintenance/Troubleshooting
Page 42 Installation Instructions KACO blueplanet 32.0 TL3 / 40.0 TL3 / 50.0 TL3
Fault
Cause of fault Explanation/remedy By
Noise emission
from the inverter.
Particular ambient con-
ditions.
When there are certain ambient conditions, the units may emit
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 switching
between sunny and cloudy conditions) or strong solar radia-
tion, a light hum may be audible due to the increased power.
• Under certain grid conditions, resonances may form
between the unit’s input fi lter and the grid, which may be
audible even when the inverter is switched off .
These noise emissions do not aff ect the operation of the
inverter. They do not lead to loss of effi ciency, 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.

No action
In spite of high
radiation levels,
the inverter does
not feed the
maximum power
into the grid.
The device is too hot
and the system limits
the power.
Because the temperatures inside the unit are too high, the
inverter reduces its power to prevent damage to the unit. Note
the technical data. Ensure that the convection cooling is not
impeded from the exterior. Do not cover the cooling fi ns.

Provide for suffi cient cooling of the unit.

Do not cover the cooling fi ns.
B, E
Table 4: Troubleshooting
9.5 "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
defi ned in standards, e.g. VDE0126-1-1. The inverter shuts down if the values exceed or fall below the approved levels.
9.5.1 Display of status and fault messages
Display Fault LED (red)
FS (fault status) ON
• Fault signal relay has switched.
• Feed-in was ended due to a fault.
OS (operating status) OFF
• The fault signal relay releases again.
• The inverter feeds back into the grid again after a coun-
try-specifi c time period.
Details regarding the fault or operating status can be found either on the display or in the data that was recorded through
the RS485 interface.