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Bell Wire
Safety Reversing Sensor
Diagnostic Chart
Safety reversing sensors
wire open (broken
or disconnected).
OR
Safety reversing sensors
wire shorted or black/
white wire reversed.
Control console or wire
shorted.
Safety reversing sensors
slightly misaligned (dim
or flashing LED).
Possible RPM sensor
failure. Unplug to reset.
Your garage door opener is programmed with self-diagnostic
capabilities. The "Learn" button/diagnostic LED will flash a
number of times then pause signifying # has found a potential
issue. Consult Diagnostic Chart below.
""0 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.
-0 Symptom: LED is not fit on control console.
• Inspect control console/wires for a short (staple in wire), replace as needed.
• Disconnect wires at control console, touch wires together. If motor unit activates,
replace control console.
• If motor unit does not activate, disconnect control console wires from motor unit.
Momentarily short across red and white terminals with jumper wire. If motor unit
activates, replace control console wires.
•"0 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.
•"0 Symptom: 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 flashing 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 30 minutes and retry.
If motor unit still will not operate replace logic board.
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