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DIAGNOSTIC CHART
Safety reversing sensors slightly
misaligned (dim or fl ashing LED).
Door control or wire shorted.
Safety reversing sensors wire
shorted or black/white wire
reversed.
Safety reversing sensors wire
open (broken or disconnected).
OR
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 ft.
(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 fl ashing.
• Realign receiving eye sensor, clean lens and secure brackets.
• Verify door track is fi rmly secured to wall and does not move.
Symptom: Motor has overheated; the motor unit does not operate or
trolley is stuck on stop bolt = Motor unit hums briefl y; RPM Sensor =
Short travel 6-8" (15-20 cm).
• Unplug unit to reset. Try to operate motor unit, check diagnostic code.
• If it is still fl ashing 5 times and motor unit moves 6-8" (15-20 cm), replace
RPM sensor.
• If motor unit doesn’t operate, motor unit is overheated. Wait 15 minutes and
retry. If motor unit still will not operate replace logic board.
Symptom: Motor unit doesn’t operate.
• Replace logic board because motor rarely fails.
1 FLASH
2 FLASHES
3 FLASHES
4 FLASHES
Your garage door opener is programmed with
self-diagnostic capabilities. The “Learn” button/diagnostic
LED will fl ash a number of times then pause signifying
it has found a potential issue. Consult Diagnostic Chart
below.
Motor overheated or possible
RPM sensor failure. Unplug to
reset.
5 FLASHES
Motor Circuit Failure. Replace
Receiver Logic Board.
6 FLASHES
LED or
Diagnostic
LED
“Learn”
Button
Diagnostics
Located On
Motor Unit
Bell Wire
Safety Reversing Sensor
Installed Safety
Reversing Sensor