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Troubleshooting
Display Status LED is not illuminated.
Verify that DC power (9-33V) is applied to the sensor.
Verify that the cable between the sensor and display is connected.
Display Status LED is RED.
Check connection between display and sensor.
Display Status LED is RED and one Yellow LED is illuminated.
No communication with any sensor(s)
Built in Self Test Error –Contact Factory
All the display LED’s are illuminated when sensor is mounted.
Verify the sensor is pointing outward from the vehicle in an open
area with no obstructions. This may require removing the mounting
screws and lifting the sensor out away from the rear of the vehicle.
If the display LED’s are not active when moved away from the
vehicle, but are active when mounted, then the sensors mounting
position will have to be moved.
Sensor is detecting the ground, indicated by a few of the display LED’s
being lit.
In an open field, either move the sensor up higher or slightly angle
the sensor upward 5 to 10 degrees. The minimum recommended
mounting height is 24 inches.
*Blockage Error only reported by Sentry sensors.
For questions, call +1.844.787.2327 toll free in the USA. Call
+1.208.323.1000 or send a fax request to +1.208.323.1034 for outside
the USA, or submit an online request at www.preco.com/contact-us/
A safety specialist will respond within 24 hours.
