Bell Wire

Diagnostics

Located On

Motor Unit

 

LED or

 

Diagnostic

 

LED

Safety Sensor

"Learn"

Button

Installed

Safety 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

Safety sensors wire open (broken or disconnected).

OR

2 FLASHES

Safety sensors wire shorted or black/white wire reversed.

3 FLASHES

Door control or wire shorted.

4 FLASHES

Safety Sensors slightly misaligned (dim or flashing LED).

5 FLASHES

Motor overheated or possible RPM sensor failure. Unplug to reset.

6 FLASHES

Motor Circuit Failure.

Replace Receiver

Logic Board.

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 (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 sensors.

Symptom: LED is not lit 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.

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.

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" (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.

Symptom: Motor unit doesn’t operate.

• Replace logic board because motor rarely fails.

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Craftsman 139.18595 owner manual Symptom LED is not lit on door control, Symptom Motor unit doesn’t operate
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139.18595 specifications

The Craftsman 139.18595 is a robust and reliable garage door opener that combines practicality with advanced technology, making it an ideal choice for homeowners. This model is designed to enhance convenience and security while ensuring smooth operation over time.

One of the standout features of the Craftsman 139.18595 is its powerful 1/2 horsepower motor. This motor provides sufficient power to lift even the heaviest of garage doors, making it a great option for homeowners with larger or heavier doors. The opener operates quietly, reducing noise disturbances, particularly when the door is in use early in the morning or late at night.

In terms of technology, the Craftsman 139.18595 is equipped with a reliable belt drive system. This feature not only contributes to its quiet operation but also ensures longevity and minimal maintenance. Unlike chain-driven models, the belt drive system reduces wear and tear, making it an ideal option for those looking for a long-term investment.

The garage door opener comes with a suite of safety features, including the photo-eye sensor technology. This system detects objects in the door's path, automatically reversing its direction to prevent accidents. This feature is particularly useful for families with pets or small children, providing added peace of mind during operations.

Additionally, the Craftsman 139.18595 offers modern connectivity options. It is compatible with many smartphone apps, allowing users to control and monitor their garage door remotely. This smart technology adds convenience, enabling homeowners to open or close their garage door from virtually anywhere.

Installation of the Craftsman 139.18595 is straightforward, thanks to its user-friendly design and comprehensive instruction manual. Whether you are a seasoned DIY enthusiast or new to home improvement projects, you can set up the opener with relative ease.

In summary, the Craftsman 139.18595 stands out for its powerful motor, quiet belt drive system, advanced safety features, and smart connectivity options. This garage door opener not only enhances the functionality and security of your home but also embodies the quality and craftsmanship that the Craftsman brand is known for.
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