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Installed
Safety Reversing
Sensor
Your garage door opener is programmed with self-diagnostic
capabilities. The “Learn” button/diagnostic LED will flash a
number of times then pause signifying it has found a
potential issue. Consult Diagnostic Chart below.
Diagnostic Chart
Symptom: One or both of the Indicator lights on the safety reversing sensors
do not glow steady.
• Inspect sensor wires for a short (staple in wire), correct wiring polarity (black/white
wires reversed), broken or disconnected wires, replace/attach as needed.
• Disconnect all wires from back of motor unit.
• Remove sensors from brackets and shorten sensor wires to 1-2 feet (30-60 cm)
from back each of sensor.
• Reattach sending eye to motor unit using shortened wires. If sending eye indicator
light glows steadily, attach the receiving eye.
• Align sensors, if the indicator lights glow replace the wires for the sensors. If the
sensor indicator lights do not light, replace the safety reversing sensors.
Symptom: LED is not lit on door control.
• Inspect door control/wires for a short (staple in wire), replace as needed.
• Disconnect wires at door control, touch wires together. If motor unit activates,
replace door control.
• If motor unit does not activate, disconnect door control wires from motor unit.
Momentarily short across red and white terminals with jumper wire. If motor unit
activates, replace door control wires.
Symptom: Sending indicator light glows steadily, receiving indicator light is
dim or flashing.
• Realign receiving eye sensor, clean lens and secure brackets.
• Verify door track is firmly secured to wall and does not move.
Symptom: Door travels 2-3 inches and stops.
• Reprogram limits and forces. See Adjustment section.
• If the motor unit continues to travel 2-3 inches, check the travel module connection
or replace the travel module.
Symptom: No movement, motor runs 2-3 seconds.
• Reconnect the emergency release.
• Motor may need to be replaced.
Motor RPM is not
recognized.
Safety reversing sensors
slightly misaligned
(dim or flashing LED).
Door control or wire
shorted.
Safety reversing
sensors wire shorted or
black/white wire reversed.
Safety reversing
sensors wire open
(broken or disconnected).
1 FLASH
2 FLASHES
3 FLASHES
4 FLASHES
5 FLASHES
OR
Bell Wire
Safety Reversing Sensor
Diagnostics
Located On
Motor Unit
“Learn”
Button LED
or Diagnostic
LED
“Learn” Button