Garage door opener

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1 FLASH OR 2 FLASHES - Safety sensors wire open (broken or disconnected)
Symptom: One or both of the Indicator lights on the safety 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 from back of each 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 sensors.

3 FLASHES - Door control or wire shorted
Symptom: LED is not 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.

4 FLASHES - Safety Sensors slight misaligned (dim or flashing LED)
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.

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 inches. - 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 inches, 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.

6 FLASHES - Motor Circuit Failure. Replace Receiver Logic Board. Symptom: Motor unit doesn't operate. - Replace logic board because motor rarely fails.

Make sure that the RPM sensor has not been disconnected or not in place.