35
Operation
Diagnostic Chart
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.
Installed
Safety Reversing
Sensor
“Learn”
Button
Safety Reversing
Sensor
Bell Wire
Diagnostics Located
on Motor Unit
LED or
Diagnostic
LED
1 Flash
Safety reversing
sensors wire open
(broken or
disconnected).
OR
2 Flashes
Safety reversing
sensors wire shorted
or black/white wire
reversed.
Symptom:
One or both of the Indicator lights on the safety
reversing sensors do not glow steady.
l
Inspect sensor wires for a short (staple in wire), correct wiring
polarity (black/ white wires reversed), broken or disconnected
wires, replace/attach as needed.
l
Disconnect all wires from back of motor unit.
l
Remove sensors from brackets and shorten sensor wires to
1-2 ft. (30-60 cm) from back each of sensor.
l
Reattach sending eye to motor unit using shortened wires. If
sending eye indicator light glows steadily, attach the receiving
eye.
l
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.
3 Flashes
Door control or wire
shorted.
Symptom:
LED is not lit on door control.
l
Inspect door control/wires for a short (staple in wire), replace
as needed.
l
Disconnect wires at door control, touch wires together. If
motor unit activates, replace door control.
l
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.
4 Flashes
Safety reversing
sensors slightly
misaligned (dim or
flashing LED).
Symptom:
Sending indicator light glows steadily, receiving
indicator light is dim or flashing.
l
Realign receiving eye sensor, clean lens and secure
brackets.
l
Verify door track is firmly secured to wall and does not move.
5 Flashes
Motor overheated or
possible RPM sensor
failure. Unplug to
reset.
Symptom:
Motor has over heated; the motor unit does not
operate or trolley is stuck on stop bolt = Motor unit hums briefly;
RPM Sensor = Short travel 6-8" (15-20 cm).
l
Unplug unit to reset. Try to operate motor unit, check
diagnostic code.
l
If it is still flashing 5 times and motor unit moves 6-8" (15-20
cm), replace RPM sensor.
l
If motor unit doesn’t operate, motor unit is overheated. Wait
30 minutes and retry. If motor unit still will not operate replace
logic board.
6 Flashes
Motor Circuit Failure.
Replace Receiver
Logic Board.
Symptom:
Motor unit doesn’t operate.
l
Replace logic board because motor rarely fails.
