Maintenance/Troubleshooting
Page 45
Operating Instructions for Powador 7700-9600_EN
EN
Authorised electrician
Fault
Cause of fault
Explanation/remedy
By
Noise emission from
the inverter.
Particular
ambient condi-
tions.
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 switch-
ing between sunny and cloudy conditions) or strong
solar radiation, a light hum may be audible due to the
increased power.
•
Under certain grid conditions, resonances may form
between the unit’s input filter and the grid, which 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 efficiency, 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
Additional devices
that are connected
via the poten-
tial-free contact
suddenly start up,
even though the
“priwatt” function is
deactivated and the
inverter indicates an
error.
The potential-free
contact connects
to indicate an
error.
If the “priwatt” function is not activated, the potential-free
contact functions as a fault signal relay and therefore indi-
cates errors. However, if additional devices that are provided
for the “priwatt” function are connected to the inverter via
the contact, they can still start up when the inverter expe-
riences an error, because the contact is connected at that
point in time. If you deactivate the “priwatt” function, we
recommend that you disconnect devices from the inverter
that were connected for this function.
Table 7:
Troubleshooting
9.5
Messages on the display and the "Fault" 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.
9.5.1 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-specific 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.
9.5.2 Status and fault signals
The following table lists the possible status and fault signals that the inverter shows on the LCD and the LEDs. For
the status, consult the data that is logged via the RS485 interface.
