Kaco Powador 2002 Operating Instructions Manual page 44

Maintenance/Troubleshooting
Authorised electrician
Fault
The grid fuse
EN EN
trips.
Daily yields do
not correspond to
the yields on the
feed-in meter.
The inverter is
active but is not
feeding into the
grid. Display:
"Waiting for
feed-in"
Noise emission
from the inverter.
In spite of high
radiation levels,
the inverter does
not feed the max-
imum power into
the grid.
Table 5: Troubleshooting
Page 44
Cause of fault Explanation/remedy
Damage to the If the line fuse trips immediately when the inverter goes into
inverter's hard- feed-in mode (after the start-up period is complete), the invert-
ware. er's hardware is probably damaged.
 Contact KACO Service to test the hardware.
Tolerances of The measuring elements of the inverter have been selected
the measuring to ensure maximum yields. Due to these tolerances, the daily
elements in the yields shown may deviate from the values on the feed-in meter
inverter. by up to 15%.
 No action
• Generator volt- • The PV generator voltage or power is not suffi cient for
age too low feed-in (solar radiation is too low).
• Grid voltage or • The inverter checks the grid parameters before the feed-in
PV generator process begins. The length of time it takes to switch back on
voltage unsta- again diff ers by country according to applicable standards
ble. and regulations and can take several minutes.
• The starting voltage may have been set incorrectly.
 Adjust starting voltage in the Parameter menu if required.
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 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
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 fi ns.
 Ensure suffi cient cooling of the unit.
 Do not cover the cooling fi ns.
Operating Instructions for Powador 2002-6002_EN
By
E
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K
B, E