Users Manual

11 Troubleshooting
11.1 LED colors
During the boot process, the LED will change color several times to indicate stages in the boot process:
Table 11.1.1: LED color codes
LED color Boot stage
white power supply OK
yellow normal boot process in progress
purple
blue
green boot complete, rc_visard ready
The LED will signal some warning or error states to support the user during troubleshooting.
Table 11.1.2: LED color trouble codes
LED color Warning or error state
off no power to the sensor
brief red flash every 5 seconds no network connectivity
red while sensor appears to function normally high-temperature warning (case has exceeded 60 °C)
red while case is below 60 °C Some process has terminated and failed to restart.
11.2 Hardware issues
LED does not illuminate
The rc_visard does not start up.
• Ensure that cables are connected and secured properly.
• Ensure that adequate DC voltage (18 V to 30 V) with correct polarity is applied to the power connector at
the pins labeled as Power and Ground as described in the device’s pin assignment specification (Section
3.5.1). Connecting the sensor to voltage outside of the specified range, to alternating current, with reversed
polarity, or to a supply with voltage spikes will lead to permanent hardware damage.
LED turns red while the sensor appears to function normally
This may indicate a high housing temperature. The sensor might be mounted in a position that obstructs free
airflow around the cooling fins.
• Clean cooling fins and housing.
• Ensure a minimum of 10 cm free space in all directions around cooling fins to provide adequate convective
cooling.
• Ensure that ambient temperature is within specified range.
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