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
Inspectsensor wires for a short (staple in wire),correct
wiring polarity (black/ white wires reversed), broken or
disconnected wires,replace/attach as needed.
l
Disconnectall wires from backof motor unit.
l
Remove sensorsfrom brackets and shorten sensor wires
to 1-2 ft. (30-60 cm) from backeach of sensor.
l
Reattach sending eye to motor unit using shortened wires.
If sending eye indicator light glowssteadily,attach the
receiving eye.
l
Align sensors, if the indicator lightsglow replace the wires
for the sensors.If the sensor indicator lightsdo not light,
replace the safety reversing sensors.
3 Flashes
Door control or wire
shorted.
Symptom: LED is not lit on door control.
l
Inspectdoor control/wires for a short (staple in wire),
replace as needed.
l
Disconnectwires at door control, touch wires together. If
motor unit activates,
replace door control.
l
If motor unit does not activate,disconnectdoor control
wires from motor unit.
Momentarily short acrossred 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 trackis firmlysecured 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. Tryto 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.
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