SMA Sensorbox - Manual (Page 69)

SMA Solar Technology AG Troubleshooting
Installation Guide Sensorbox-IEN100914 69
11.2 RS485 Power Injector
Unrealistic readings
from the ambient
temperature sensor
are displayed. The sensor is not
connected properly. Make sure the sensor is connected to the right
terminal on the Sunny SensorBox.
The sensor cable is
damaged. Inspect the cable for signs of damage and
replace if necessary.
The sensor is damaged or
dirty. Clean the sensor.
Replace defective sensors.
The sensor has been
deactivated and the
resistor is no longer
connected to the Sunny
SensorBox. Plug the resistor into the connection terminal of
the ambient temperature sensor.
The requisite cable length
was ignored. Check the cable length. Adhere to the cable
length specified in the sensor manual.
Unrealistic readings
from the anemometer
are displayed. The sensor is not
connected properly. Make sure the sensor is connected to the right
terminal on the Sunny SensorBox.
The sensor cable is
damaged. Inspect the cable for signs of damage and
replace if necessary.
The sensor is damaged or
dirty. Clean the sensor.
Replace defective sensors.
The requisite cable length
was ignored. Check the cable length. Adhere to the cable
length specified in the sensor manual.
Unrealistic readings
from the integrated
solar radiation sensor
are displayed. The sensor is not
connected properly. Make sure the sensor is connected to the right
terminal on the Sunny SensorBox.
The sensor cable is
damaged. Inspect the cable for signs of damage and
replace if necessary.
The sensor is damaged or
dirty. Clean the sensor.
Replace defective sensors.
Problem Cause Rectification
The "Power" LED on
the RS485 Power
Injector does not light
up. The RS485 Power Injector
does not have power. Make sure the plug-in power supply unit of the
RS485 Power Injector is connected to a
power outlet.
Problem Cause Rectification