Owner’s manual
Error Codes
How do I know what model my garage door opener is?
Your Craftsman garage door opener’s model number is printed on the opener’s identification label on the motor unit (the power head mounted to the ceiling). For model 13953963SRT, the label is typically under the light lens/cover or behind the front cover; confirm the exact label location in the 13953963SRT owner's manual.
Check the motor unit itself, not the door or the rail.
- Under the light lens/cover (especially on one-light or two-light power heads)
- Behind the front cover on the power unit
- On the side panel near the wiring terminals or antenna wire
- On the back panel near the hanging brackets
- On the underside of the motor unit (visible from a ladder)
Record the information exactly as printed on the label.
- Model number (example: 13953963SRT)
- Manufacturing number or part number (if shown)
- Serial number (if shown)
- Motor type and features listed (for example, SECURITY+ or light configuration)
Use this to avoid mixing up similar Craftsman openers.
| Item on label | Why it matters | Example |
|---|---|---|
| Model number | Matches the correct parts list and manual | 13953963SRT |
| Logic board/receiver info | Helps with remote and wall control compatibility | SECURITY+ |
| Light configuration | Helps confirm you are looking at the right cover area | One-light vs two-light |
Craftsman openers often look alike across multiple model families. Using the exact model number helps us match the correct troubleshooting steps, wiring guidance, and compatible parts for your specific power unit.
Last updated: February 2026
Can you get a universal remote for an old garage door opener?
Yes. For the Craftsman 13953963SRT garage door opener, you can use compatible SECURITY+ remotes (the manual lists 3-function remotes with blue pushbuttons), and you can also add additional remotes by programming them to the opener using the steps in the owner's manual.
For older openers, the most reliable path is matching the opener’s radio system and programming method.
- Use a compatible SECURITY+ remote designed for this opener generation
- Program the remote using the door control buttons (or the opener’s learn/SRT function)
- If you have multiple doors, choose a multi-button remote so one remote can run more than one opener
- Replace the remote battery before troubleshooting range or intermittent operation
- Keep the remote and opener antenna area clear of metal obstructions that can reduce signal
Your 13953963SRT manual describes adding a remote by holding buttons on the remote and the wall control until the opener light flashes.
- Start with the garage door closed.
- Press and hold the button on the remote you want to use.
- Press and hold the Light button on the wall control.
- Press and hold the wall control push button.
- Release when the opener light flashes; then test the remote.
If you need to erase all remotes first, the manual also covers clearing stored remote codes and then reprogramming.
| Option | Best when | What you’ll do |
|---|---|---|
| Compatible SECURITY+ remote | You want the simplest setup | Program it to the opener using the wall control steps |
| Universal remote | You want one remote for multiple brands | Set the remote to the correct mode, then program/learn it |
Using the right remote type prevents “won’t program” problems and avoids safety issues from unreliable operation. If the opener lights blink or you see unusual behavior during setup, use the Craftsman error codes guide to pinpoint the cause.
Last updated: February 2026
Is it cheaper to repair or replace a garage door opener?
For the Craftsman 13953963SRT garage door opener, it’s cheaper to repair when the problem is isolated (power issue, safety sensor alignment, wall control wiring, light bulb, minor force/limit readjustment). Replace the opener when repairs are frequent, the motor/drive system is failing, or the door hardware issues make operation unsafe.
- Repair when the opener has power but won’t run due to a simple cause (tripped breaker, locked door, frozen door, misaligned sensors).
- Repair when the fix is an adjustment (travel limits or force) after seasonal changes.
- Repair when the issue is control-related (wall control wiring, remote programming/battery).
- Replace when the opener repeatedly trips, hums and won’t run, or has recurring drive/motor problems.
- Replace when the opener is older and you want quieter operation and newer features.
- Do not “repair” by increasing force to overcome a heavy door; that points to a door balance/spring problem.
The owner's manual emphasizes safety and setup: keep the door properly balanced, disconnect power before repairs, and do not increase force to compensate for a door that is out of balance or has broken springs. If the door will not stay at a mid-travel position when disconnected and moved by hand, the door hardware needs professional service before you invest in opener repairs.
| Scenario | Usually best choice | Why |
|---|---|---|
| Sensors blocked or misaligned; lights blink after reverse | Repair | Fast, low-cost fix; restores safe closing |
| Needs limit/force readjustment after weather changes | Repair | Normal maintenance-type adjustment |
| Opener hums briefly then won’t work | Repair first, replace if recurring | Can be a locked door or spring issue; repeated failures point to bigger problems |
| Door is heavy, out of balance, or springs are broken | Fix door hardware first | Opener repairs won’t last and force increases are unsafe |
A garage door opener is designed to move a properly balanced door. When the door is binding, frozen, or out of balance, the opener strains, safety reversing can fail, and you can end up paying for repeated repairs that do not solve the root cause.
- Use Craftsman error codes to interpret blinking lights or diagnostic patterns before you buy parts.
Last updated: February 2026
Where can I buy Craftsman garage door opener parts?
You can buy replacement parts for your Craftsman garage door opener model 13953963SRT through our parts listings and diagrams, using the model number to match the exact components (like remotes, wall control consoles, safety reversing sensors, and rail hardware). Use the owner's manual to identify the correct part names before ordering.
Common service items for this Craftsman opener include:
- Remote controls and keyless entry pads (Security+ style)
- Wall control console
- Safety reversing sensors (sending eye and receiving eye)
- Door bracket and door arm sections
- Hanging brackets and header/rail brackets
- Light lens or light socket components (varies by configuration)
Because garage door opener parts can look similar across Craftsman models, we recommend confirming the exact match using your model number and the parts list.
- Verify the full model number on the opener power head label: 13953963SRT
- Use the parts list and exploded-view diagrams to confirm the part description
- Match the part by function (for example, “receiving eye” vs “sending eye” sensor)
- If you’re replacing a control or remote, confirm it’s compatible with your opener’s Security+ system
- If you’re unsure, compare wire connections and mounting style before ordering
| What you have | What to match before buying | Why it matters |
|---|---|---|
| Old part in hand | Mounting holes, connectors, wire count | Prevents wrong-fit returns |
| Symptom (won’t close, lights blink) | Sensor vs travel vs control issue | Avoids replacing the wrong part |
| Manual/parts list | Exact part description for 13953963SRT | Confirms compatibility |
Sometimes the issue is adjustment or alignment, not a failed part.
- If the door won’t close, check sensor alignment and obstructions first
- If the opener runs but the door doesn’t move, inspect the drive system and trolley engagement
- If remotes won’t work, check the wall control lock feature and reprogram the remote
For symptom-based guidance, use Craftsman error codes to narrow down what’s failing.
Ordering by model number and confirming the part description helps you get a compatible Craftsman replacement the first time, especially for safety reversing sensors and Security+ remotes where compatibility is critical.
Last updated: February 2026
Why is my garage door not responding to remotes and/or keypad?
For Craftsman model 13953963SRT, the most common causes are a dead remote/keypad battery, the wall control Lock feature being turned on, or a safety sensor issue that prevents remote closing. Re-syncing (reprogramming) the remotes to the opener also restores operation in many cases; see the owner's manual.
- Replace the battery in each remote and the keypad.
- Check the wall console for Lock mode; when Lock is on, the wall button light flashes and remotes/keyless entry are disabled.
- Verify the opener has power (lights come on when activated).
- Make sure the safety sensor lenses are clean and the sensor beams are not blocked.
- If the door will not close with a remote, try holding the wall control button down until the door fully closes (this points to a sensor alignment/obstruction issue).
The 13953963SRT uses a learn-style receiver (SRT/learn indicator button). If all remotes/keyless entry stopped working, clearing and reprogramming often fixes it.
Typical steps:
- Press and hold the learn button until the indicator light turns off (about 6 seconds) to erase stored remote codes.
- Program each remote again following the receiver programming steps in the owner's manual.
When the safety reversing sensor beam is broken during closing, the door reverses and the opener lights blink for about 5 seconds. If a sensor indicator light is off, the opener will not close the door from a remote until the sensors are aligned and unobstructed.
| Symptom | Most likely cause | What to do next |
|---|---|---|
| Wall button works, remotes do nothing | Lock feature on | Turn Lock off at the wall console |
| Door will not close by remote, but closes when holding wall button | Safety sensors blocked/misaligned | Clean, align, remove obstructions |
| All remotes/keypad stopped at once | Codes erased or receiver needs re-learn | Erase and reprogram remotes |
Remote and keypad problems are often safety-related on this model; the opener is designed to refuse remote closing when the photo-eye system is misaligned or blocked. Fixing the root cause prevents nuisance reversals and keeps the safety reverse system working correctly.
- Use Craftsman error codes to interpret diagnostic flashes and speed up pinpointing sensor, travel, or control issues.
Last updated: February 2026
