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Garage Door Opener

Model # 1245R Official Chamberlain garage door opener

Here are the diagrams and repair parts for Official Chamberlain 1245R garage door opener, as well as links to manuals and error code tables, if available.

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Browse Parts for1245R Garage Door Opener

  • Garage Door Opener Rpm Sensor Assembly 41C4398A
    #15

    Motor unit assembly diagram

    Garage door opener rpm sensor assembly

    Part #41C4398A

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Opener Drive And Worm Gear Kit 41A2817
    #3

    Motor unit assembly diagram

    Garage door opener drive and worm gear kit

    Part #41A2817

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Opener Limit Switch 41D3452
    #14

    Motor unit assembly diagram

    Garage door opener limit switch

    Part #41D3452

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Opener Motor Shaft Bearing Kit 41A2826
    #17

    Motor unit assembly diagram

    Garage door opener motor shaft bearing kit

    Part #41A2826

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Opener Gear And Sprocket Assembly 41C4220A
    #2A

    Motor unit assembly diagram

    Garage door opener gear and sprocket assembly

    Part #41C4220A

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Opener Safety Sensor Kit 41A5034
    #9

    Installation parts diagram

    Garage door opener safety sensor kit

    Part #41A5034

    The manufacturer no longer makes this part, and there's no substitute part

  • Gear And Sprocket Assembly (1256r, 1246r) 41C4206A
    #2

    Motor unit assembly diagram

    Gear and sprocket assembly (1256r, 1246r)

    Part #41C4206A

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Monitor Sensor 916LM
    #8

    Accessories diagram

    Garage door monitor sensor

    Part #916LM

    The manufacturer no longer makes this part, and there's no substitute part

  • Garage Door Monitor 915LM
    #7

    Accessories diagram

    Garage door monitor

    Part #915LM

    The manufacturer no longer makes this part, and there's no substitute part

  • Remote Light Control 995LM
    #9

    Accessories diagram

    Remote light control

    Part #995LM

    The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your garage door openers

Choose a symptom to see related garage door opener repairs.

Main causes: garage door opener misaligned, travel limits need adjustment, bad travel limit switches, faulty logic contr…

Main causes: garage door locked, damaged garage door tracks, up-force setting needs adjustment, RPM sensor failure, bad …

Main causes: safety sensor beams blocked, safety sensors not aligned, downforce setting needs adjustment, damaged garage…

Things to do: check garage door travel, tighten brackets and fasteners, test safety sensors, check travel limits and for…

Main causes: radio interference, weak remote batteries, sunlight interference with safety sensor beams, safety sensors n…

Main causes: faulty logic control board, bad RPM sensor, broken gears in the drive system, bad drive motor…

Main causes: neighbor's remote programmed at the same time as yours, faulty wall control wiring, bad wall control unit…

Main causes: loose fasteners, broken brackets, need preventive maintenance, worn drive gears, loose or worn belt, loose …

Most common repair guides to help fix your garage door openers

These step-by-step repair guides will help you safely fix what’s broken on your garage door opener.

How to replace a garage door opener battery

How to replace a garage door opener battery

The garage door won't move during a power outage if the battery is dead. Here’s how to replace it.…

Repair difficulty
Time required
 15 minutes or less
How to replace a garage door opener wall control

How to replace a garage door opener wall control

If you push the control button on the wall control and the garage door doesn’t move, the control is defective. Replace i…

Repair difficulty
Time required
 15 minutes or less
How to replace a chain-drive garage door opener RPM sensor

How to replace a chain-drive garage door opener RPM sensor

Learn how to replace the RPM sensor if the door only moves 6 to 8 inches at a time and the LED light flashes 5 times. …

Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your garage door openers

Use the advice and tips in these articles and videos to get the most out of your garage door opener.

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

How to program garage remote controls

How to program garage remote controls

This video covers 5 different wall control units and universal remotes.…

Easy DIY garage door opener repairs

Easy DIY garage door opener repairs

You can repair your garage door opener yourself. We show you how.…

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