Bell Wire

Diagnostics

Located On

Motor Unit

LED or

Diagnostic

 

LED“Learn”

Safety Reversing Sensor

Button

 

Installed

Safety Reversing

Sensor

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.

Diagnostic Chart

1 FLASH

Symptom: One or both of the Indicator lights on the safety sensors do not glow

Safety reversing sensors

steady.

• Inspect sensor wires for a short (staple in wire), correct wiring polarity (black/

wire open (broken or

white wires reversed), broken or disconnected wires, replace/attach as needed.

disconnected).

• Disconnect all wires from back of motor unit.

OR

• Remove sensors from brackets and shorten sensor wires to 1-2 ft (30-60 cm)

 

2 FLASHES

from back each of sensor.

Safety reversing sensors

• Reattach sending eye to motor unit using shortened wires. If sending eye

indicator light glows steadily, attach the receiving eye.

wire shorted or black/white

• Align sensors, if the indicator lights glow replace the wires for the sensors. If the

wire reversed.

sensor indicator lights do not light, replace the safety sensors.

 

3 FLASHES

Symptom: LED is not lit on door control.

Door control or wire

• 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,

shorted.

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

Symptom: Sending indicator light glows steadily, receiving indicator light is dim

Safety reversing sensors

or flashing.

• Realign receiving eye sensor, clean lens and secure brackets.

slightly misaligned (dim

• Verify door track is firmly secured to wall and does not move.

or flashing LED).

5 FLASHES

Symptom: Motor has overheated; the motor unit does not operate or trolley is

 

stuck on stop bolt = Motor unit hums briefly; RPM Sensor = Short travel 6-8"

Motor overheated or

(15-20 cm).

possible RPM sensor

• Unplug unit to reset. Try to operate motor unit, check diagnostic code.

failure. Unplug to reset.

• 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.

6 FLASHES

Symptom: Motor unit doesn’t operate.

Motor Circuit Failure.

• Replace logic board because motor rarely fails.

 

Replace Receiver

 

 

Logic Board.

 

 

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