A Craftsman garage door that won’t close usually points to sensor alignment, travel limits, or force settings; start with the sensors.
If the door stops, reverses, or refuses to budge, you can track the fault quickly with a few tidy checks. The steps below keep things safe and save a service call in many cases. You’ll learn what the lights mean, how to align the eyes, how to set travel and force, and when to call a pro.
Why Your Craftsman Door Won’t Close: Fast Checks
Every opener in this family uses photo-eyes and travel logic to protect people and property. When the beam is blocked or the logic thinks the door hit something, closing gets canceled. Work through the checks in order, from easiest to quickest wins.
Quick Diagnostic Table
| Symptom | Most Likely Cause | What To Try |
|---|---|---|
| Lights flash, door won’t close | Photo-eyes blocked or misaligned | Clean lenses; align until both LEDs glow steady |
| Door starts down then reverses | Down travel set too long; door binds | Shorten down limit; lubricate rollers and hinges |
| Door won’t move from remote | Lock mode on wall control | Turn off LOCK; try again |
| Closes only when you hold wall button | Sensor circuit fault | Check sensor LEDs and wiring; realign or rewire |
| Opener hums, no movement | Door out of balance; travel jam | Pull emergency release; lift by hand to test balance |
| One sensor LED off or flickers | Open/shorted wire; loose connection | Re-terminate or replace low-voltage wire |
Safety First Before Any Adjustment
Unplug the opener when you work on low-voltage wiring. Keep cars clear of the path. Do not adjust torsion springs; that job needs special tools. Use the emergency release only with the door down, or brace it if you must pull the handle with the door raised.
Photo-Eye Sensors: Clean, Aim, And Wire
The sending eye shows amber, the receiving eye shows green on many models. Both should glow solid. Dust, sun glare, a shifted bracket, or a nicked wire can break the beam and stop closing.
Step 1: Clean And Clear The Path
Wipe the lenses with a soft cloth. Remove cobwebs and debris along the floor. Check that nothing sticks out into the beam near the rail or the track.
Step 2: Align The Beam
Loosen the wing nuts. Aim the eyes straight at each other at the same height (about six inches off the floor). Tighten the nuts once both LEDs stay solid. If you see a blinking green light, nudge the sensor until it steadies.
Step 3: Check The Wiring
Trace the thin two-conductor wire from each eye to the opener. Look for staples pinching insulation, cuts near the floor, or loose terminals. If one LED stays off, swap the sensor wires at the opener head to see if the issue follows the wire run. Replace damaged wire with 22-gauge stranded, routed cleanly along the wall.
If the opener lights flash while trying to close, the brand’s support notes this often points to the reversing sensors or the wall control lock. You can read their page on lights flashing and no close for model-specific clues for that model.
Wall Control: Exit Lock Mode
Some wall consoles have a LOCK button that ignores remote signals. If the remote won’t close the door but the wall button works, turn off LOCK. The console light shows when lock is active.
Travel Limits: Set Down And Up Correctly
Travel tells the opener how far the door should move. If the down limit is set too far, the trolley hits a hard stop and the logic reverses. If set too short, the door leaves a gap and may reopen.
Dial Or Screw Adjusters
Most Craftsman heads have UP and DOWN adjusters. Turn in small steps, then run a full cycle. Shorten DOWN until the door meets the floor with a firm seal but no bounce. Match UP so the door clears the header without slamming the stop bolt.
Balance Check
Pull the release. Lift the door by hand. It should stay around halfway with light effort. If it falls or shoots up, call a technician to set spring tension. Travel and force can’t mask a bad balance for long.
Force Settings: Enough To Move, Not Enough To Hurt
Force limits cap how hard the motor pushes. Too low and the door trips reversal on small bumps. Too high and the system may not react to an object fast enough. After setting travel, bump FORCE up just until the door moves cleanly through both directions without stopping on minor track joints.
Remote And Keypad: Rule Out Simple Blocks
Replace remote batteries, then test from inside the garage with the door in view. Check that the antenna hangs straight. If the keypad opens but won’t close, the issue still points to sensors, lock mode, or travel.
Door Hardware: Fix What Drags
Rollers should spin, not slide. Tracks should be plumb and free of dents. Hinges should move smoothly. A sticky door makes the opener think it hit something. Lubricate rollers (nylon wheels, steel stems), hinges, and the center bearing with a light garage-door lube. Skip grease on the track; clean it instead.
What The Lights And LEDs Usually Mean
Different boards show status with flash codes on the head light or a logic LED. A common pattern is repeated flashes during a close attempt when sensors are out. Some models blink a fixed number to point at travel or force faults. Use your manual for the exact chart; the table below shows common patterns across similar units.
Common Flash Patterns
| Indicator | Pattern | Meaning |
|---|---|---|
| Main light | 10 flashes | Photo-eye fault; check alignment and wiring |
| Sensor LEDs | Green blinking | Beam blocked or misaligned |
| Head LED | Steady, no move | Lock enabled or travel not learned |
| Head LED | Rapid blink during close | Force or travel needs adjustment |
Chamberlain and LiftMaster publish sensor alignment guides with LED behavior and wiring tips. Their walk-throughs explain bracket height, aiming, and wire tests.
Step-By-Step: From Dead Stop To Working Close
1) Try A Safe Close From The Wall Button
Stand where you can see the door path. Press and hold the wall button to force a close. If the door shuts only while held, the sensor circuit needs attention.
2) Inspect Sensor LEDs
Both on solid means the beam is good. One off or flickering means alignment or wiring trouble. Fix that before moving on.
3) Test Remote And Lock
Turn off lock mode. Try the remote again. If the head light blinks and the door won’t close, go back to the eyes.
4) Set Travel
Run the door to full open. Adjust UP if needed. Run to full close. Adjust DOWN to a snug seal without bounce.
5) Dial In Force
Raise and close a few cycles. If closing stops partway, raise FORCE a touch. If it slams or doesn’t reverse when you add a small obstruction under the door edge, lower FORCE.
6) Service Items
If balance is off, hardware is bent, or the opener strains, call a garage-door company. Spring work and cable work are not DIY.
Rules And Safety Notes You Should Know
Photo-eyes exist because of national safety rules. Residential openers sold in the U.S. must meet 16 CFR Part 1211. The agency maintains updates that align with UL 325 so that entrapment protection stays current across models.
When The Door Closes Then Reopens
This pattern points to a down limit set too long, a tall floor hump, or a tight spot near the end of travel. Shorten the DOWN limit a notch, then test again with a strip of paper under the door edge. The openers in this family should reverse when the edge meets that strip and then return to open.
When Nothing Moves At All
Check power to the outlet with a lamp. Reset the GFCI. Check the opener’s inline fuse if your model has one. If the light turns on but the motor won’t run, a failed logic board, capacitor, or RPM sensor may be in play. At that point, a service call is smarter than guesswork.
Maintenance That Prevents No-Close Headaches
Monthly
Test the photo-eyes by blocking the beam and trying to close. The door should refuse. Remove the block and try again. Test the reversal by placing a 2×4 laid flat under the door edge; it should touch and reopen. Wipe lenses and check sensor LEDs.
Quarterly
Tighten hinge screws. Check roller stems for play. Clean the track. Lubricate moving metal parts lightly. Check the opener rail for loose bolts and the chain or belt for correct tension.
Yearly
Test balance with the release. If the door won’t sit mid-travel, book a tune-up. Ask the technician to confirm force and travel after any spring work.
Replace remote batteries each spring. Keep coin cells in a box.
DIY Limits: When To Call A Pro
Call right away if the door is off its track, a cable is slack, a spring is broken, or the opener smokes. Those fixes need the right tools and training. It’s fine to do sensors, travel, force, lube, and basic wiring. Leave the rest.
Printable Checklist For Quick Wins
Keep this list near the door:
Close Failure Checklist
- Clear the beam; clean both lenses
- Align eyes until LEDs glow steady
- Turn off wall-console lock
- Set DOWN travel to a snug seal
- Set FORCE for smooth motion
- Lubricate rollers and hinges
- Test reversal with a flat 2×4