Sears garage door opener troubleshooting

Sears Holdings Corporation is a US chain of department stores that has a number of subsidiaries. One of them sells garage doors and garage door openers. The corporation founded in 1886 is currently based in Hoffman Estates, Illinois.

Although garage door openers can often be repaired without special training, it is necessary to use up-to-date and reliable information on Sears garage door troubleshooting. This is exactly what you will find below.  We have a Sears garage door opener manual for the following models: 53479, 139.53973SRT, and 39.18205SR – 1/2 HP. Consulting these charts should be the first step in Sears garage door repair.

Sears 53479 garage door opener troubleshooting

Sears 53479 is a residential garage door opener provided with a 1/2 HP motor, which is a standard choice for most homeowners. It can be used both on sectional doors and one-piece door. For quick and easy troubleshooting tips for the 53479 garage door opener system refer to the chart below.

SituationProbable Cause & Solution
The opener doesn’t operate from either the wall control or the remote control:1. Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light, check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.)
2. Have you disabled all door locks? Review installation instruction warnings on Page 11.
3. Is there a build-up of ice or snow under the door? The door may be frozen to the ground. Remove any restriction.
4. The garage door spring may be broken. Have it replaced.
5. Repeated operation may have tripped the overload protector in the motor. Wait 15 minutes. Try again.
Opener operates from the remote control, hut not from the wall control:1. Is the wall control push bar lit? If not, Remove the bell wire from the opener terminal screws. Short the red and white terminals by touching both terminals at the same time with a piece of wire. If the opener runs, check for a faulty wire connection at the wall control, a short under the staples, or a broken w ire.
2. Are the wiring connections correct? Review Installation Step 7, page 21.
The door operates from the wall control, hut not from the remote control:1. If your model has the Lock feature, turn it off.
2. Is the wall push button flashing? Your opener needs to re-learn a remote control code. Refer to instructions on the opener panel.
3. Does the battery test light glow w hen the remote control push button is pressed ? If not, replace the battery.
4. Program the receiver to match the remote control code.
5. Repeat the receiver programming procedure with all remote controls.
The remote control has short range:1. Check the batter)' test light. If the light is dim, replace the battery.
2. Change the location of the remote control in your car.
3. Check to be sure the antenna on the right side panel of opener extends fully.
4. Some installations may have shorter range due to a metal door, foil backed insulation, or metal garage siding.
Opener noise is disturbing in living quarters of home:If operational noise is a problem because of proximity of the opener to the living quarters, the Vibration Isolator Kit 41A3263 can be installed. This kit was designed to minimize vibration to the house and is easy to install.
The garage door opens and closes by itself:1. Be sure that all remote control push buttons and battery indicator lights are off.
2. Remove the bell wire from the wall control terminals and operate from the remote control only. If this solves the problem, the wall control is faulty (replace), or there is an intermittent short on the wire between the wall control and the opener.
The door doesn’t open completely:1. If the door has been working properly but now doesn't open all the way, increase the up force. See page 29.
2. Is something obstructing the door? Remove the obstruction or repair the door.
3. If door opens at least 5 feet, the travel limits may need to be increased. One turn equals 2 inches of travel. See page 28.
Repeat the safety reverse test after the adjustment is complete.
The door stops but doesn’t close completely:Review the travel limits adjustment procedures on page 28.
Repeat the safety reverse test after any adjustment of door arm length, close force or down limit.
The door opens but won 7 close:1. If the opener lights blink, check the safety reversing sensor. See page 22.
2. If the opener lights do not blink and it is a new installation, check the down force. See Adjustment Step 2, page 29. For an existing installation, see below.
Repeat the safety reverse test after the adjustment is complete.
The door reverses for no apparent reason and opener lights don 7 blink:1. Is something obstructing the door? Pull the emergency release handle. Operate the door manually. If it is unbalanced or binding, call for professional garage door service.
2. Clear any ice or snow from the garage floor area where the door closes.
3. Review the force adjustment procedures on page 29.
4. If door reverses in the fully closed position, decrease the travel limits (page 28). Repeat the safety reverse test after adjustments to force or travel limits. The need for occasional adjustment of the force and limit settings is normal. Weather conditions in particular can affect door travel.
The door reverses for no apparent reason and opener lights blink for 5 seconds after reversing:Check the safety reversing sensor. Remove any obstruction or align the receiving eye. See pages 12 and 22.
The opener lights...Don’t turn on:
Replace the light bulb(s) (100 watts maximum). Use a standard neck garage door opener bulb if regular bulb bums out.
Don’t turn off:
Is the Light feature on? Turn it off.
The opener strains or maximum force is needed to operate door:The door may be out of balance or the springs are broken. Close the door and use the emergency release handle to disconnect the trolley. Open and close the door manually. A properly balanced door will stay in any point of travel while being supported entirely by its springs. If it does not, disconnect the opener and call for professional garage door service. Do not increase the force to operate the opener.
The opener motor hums briefly, then won't work:1. The garage door springs are broken. See above.
2. If the problem occurs on the first operation of the opener, door may be locked. Disable the door lock.
Repeat the safety reverse test after the adjustment is complete.
The opener won't operate due to power failure:1. Use the emergency release handle to disconnect the trolley. The door can be opened and closed manually. When power is restored, press the Wall Control push bar and trolley will automatically reconnect (unless trolley is in lockout position.) See page 32.
2. The Emergency Key Release accessory (for use on garages with no service door) disconnects the trolley from outside the garage in case of power failure.

Sears 139.53973SRT garage door opener troubleshooting

One of the most popular garage door openers produced by Sears in collaboration with Craftsman is the 139.53973SRT model. The garage door operator was created exclusively for residential use. It is possible to connect an additional 3-Function hand-held remote control and use a keyless entry PIN, if necessary.

ProblemsSolutions
1. The opener doesn't operate from either the Door Control or the remote control:• Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light, check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.)
• Have you disabled all door locks? Review installation instruction warnings on page 11.
• Is there a build-up of ice or snow under the door? The door may be frozen to the ground. Remove any restriction.
• The garage door spring may be broken. Have it replaced.
• Repeated operation may have tripped the overload protector in the motor. Wait 15 minutes and try again.
2. Opener operates from the remote, but not from the Door Control:• Is the door control lit? If not, remove the bell wire from the motor unit terminals. Short the red and white terminals by touching both terminals at the same time with a piece of wire. If the opener runs, check for a faulty wire connection at the door control, a short under the staples, or a broken wire.
• Are the wiring connections correct? Review Installation Step 6, page 18.
3. The door operates from the Door Control, but not from the remote control:• Is the door push button flashing? If your model has the Lock feature, make sure it is off.
• Program the opener to match the remote control code. (Refer to instructions on the motor unit panel.) Repeat with all remotes.
4. The remote control has short range:• Change the location of the remote control in your car.
• Check to be sure the antenna on the side or back panel of motor unit extends fully downward.
• Some installations may have shorter range due to a metal door, foil backed insulation, or metal garage siding. (Antenna Extender Kit 41A3504)
5. Opener noise is disturbing in living quarters of home:• If operational noise is a problem because of proximity of the opener to the living quarters, the Vibration Isolator Kit 41A3263 can be installed. This kit was designed to minimize vibration to the house and is easy to install.
6. The garage door opens and closes by itself:• Be sure that all remote control push buttons are off.
• Remove the bell wire from the door control terminals and operate from the remote only. If this solves the problem, the door control is faulty (replace), or there is an intermittent short on the wire between the door control and the motor unit.
• Clear memory and re-program all remote controls.
7. The door doesn't open completely:• Is something obstructing the door? Is it out of balance, or are the springs broken? Remove the obstruction or repair the door.
• If the door is in good working order but now doesn’t open all the way, increase the up force. See Adjustment Step 2.
• If the door opens at least 5 feet, the travel limits may need to be increased. One turn equals 2 inches of travel. See Adjustment Step 1.
Repeat the safety reverse test after the adjustment is complete.
8. The door stops but doesn't close completely:• Review the travel limits adjustment procedures on page 28.
Repeat the safety reverse test after any adjustment of door arm length, close force or down limit.
9. The door opens but won't close:• If the opener light blinks, check the safety reversing sensor. See Installation Step 10.
• If the opener light doesn’t blink and it is a new installation, check the down force. See Adjustment Step 2, page 29.
For an existing installation, see below. Repeat the safety reverse test after the adjustment is complete.
10. The door reverses for no apparent reason and opener light doesn’t blink:• Is something obstructing the door? Pull the emergency release handle. Operate the door manually. If it is unbalanced or binding, call a trained door systems technician.
• Clear any ice or snow from the garage floor area where the door closes.
• Review Adjustment Step 2 on page 29.
• If door reverses in the fully closed position, decrease the travel limits (Adjustment Step 1).
Repeat safety reverse test after adjustments to force or travel limits. The need for occasional adjustment of the force and limit settings is normal. Weather conditions in particular can affect door travel.
11. The door reverses for no apparent reason and opener light blinks for 5 seconds after reversing:• Check the safety reversing sensor. Remove any obstruction or align the receiving eye. See Installation Step 10.
12. The opener light doesn't turn on:• Replace the light bulb (75 watts maximum). Use a standard neck garage door opener bulb if regular bulb bums out.
13. The opener lights don't turn off:• Is the Light feature on? Turn it off.
14. The opener strains or maximum force is needed to operate door:• The door may be out of balance or the springs may be broken. Close the door and use the emergency release handle to disconnect the trolley. Open and close the door manually. A properly balanced door will stay in any point of travel while being supported entirely by its springs. If it does not, disconnect the opener and call a trained door systems technician. Do not increase the force to operate the opener.
15. The opener motor hums briefly, then won't work:• The garage door springs may be broken. See above.
• If the problem occurs on the first operation of the opener, door may be locked. Disable the door lock. If the chain was removed and reinstalled, the motor may be out of phase. Remove the chain; cycle the motor to the down position. Observe the drive sprocket. When it turns in a clockwise direction and stops in the down position, reinstall the chain.
Repeat the safety reverse test after the adjustment is complete.
16. The opener won't operate due to power failure:• Use the emergency release handle to disconnect the trolley. The door can be opened and closed manually.
When power is restored, press the Door Control push button and trolley will automatically reconnect (unless trolley is in lockout position.) See page 32.
• The Emergency Key Release accessory (for use on garages with no service door) disconnects the trolley from outside the garage in case of power failure.
17. The chain droops or sags:• It is normal for the chain to droop slightly in the closed door position. Use the emergency release to disconnect the trolley. If the chain returns to normal height when the trolley is disengaged and the door reverses on a one-inch board, no adjustments are needed (see page 11).

Sears 39.18205SR – 1/2 HP garage door opener troubleshooting

Sears 39.18205SR is a residential garage door opener provided with a standard 1/2 HP motor. The model has a chain and cable drive with two-piece trolley. Some of the safety features include automatic reversal and automatic stop, force adjustment (two different screws for the UP and DOWN adjustment), and a motor overload protector.

SituationProbable cause & solution
Opener doesn’t operate from wall push button or transmitter1. Have you disengaged all door locks? Review Step 8, page 16.
2. Does the opener have electric power? Plug a lamp into the outlet. If it doesn’t light, check fuse box or circuit breaker. (Some outlets are controlled by a wall switch.)
3. Repeated operation may have tripped the overload protector in the motor. Wait 15 minutes. Try again.
4. Is there a build-up of ice or snow under door? Door may be frozen to ground. Remove any obstruction.
5. Remove bell wire from opener terminals. Short red and white terminals by touching both terminals at same time with a piece of metal (screwdriver or coin). If opener runs, check for a faulty wire connection at Wall Push Button or a short under staples.
Opener operates from transmitter but not from wall push button1. Is Wall Push Button lit? If not, refer to No. 5 above.
2. Are wiring connections correct? Review Step 5, page 14.
Door operates from wall push button but not from the transmitter1. Does the battery test light glow when transmitter push button is pressed? If not, replace the battery.
2. If you have two transmitters and only one operates, review the code setting procedures on page 23. ALL transmitters must be set to same code.
3. Is transmitters) operating any other remote control devices? See the code setting prcedures on page 23.
4. Did you press the transmitter button designated to operate garage door opener?
Transmitter has short range1. Check battery test light. If the light is dim. change the battery.
2. Change the location of the transmitter in the car.
3. A metal garage door, foil-backed insulation or metal siding will reduce the transmission range. An antenna extender kit is available from any Sears store or service center.
4. Check to be sure antenna on the rear panel of opener extends fully downward.
The garage door opens and closes by itself1. Is there a neighbor with a garage door opener using the same frequency code? Change your code. Review page 23.
2. Make sure that none of the transmitter push buttons is stuck in the "down" position.
3. Remove bell wire from opener terminals and operate from transmitter only. If this solves the problem, the Wall Push Button is faulty (replace), or there is a short or broken wire between Wall Push Button and opener.
Door doesn't open completely1. Is something obstructing the door?
2. If door opens at least 5 feet, travel limits may need to be increased. One turn equals 2 inches of travel. See page 20. REPEAT SAFETY REVERSE TEST after the adjustment is complete.
3. If door has been working properly but now doesn't open all the way, increase the UP FORCE. See page 21. REPEAT SAFETY REVERSE TEST after the adjustment is complete.
Door reverses for no apparent reason1. Is something obstructing the door? Pull red emergency release handle. Operate door manually. If it is unbalanced or binding, call for professional garage door service.
2. Clear any ice or snow from garage floor area where garage door closes.
3. Review the Force Adjustment Chart on page 21. REPEAT SAFETY REVERSE TEST after adjustment is complete.
4. If door reverses in FULLY CLOSED position, decrease travel limits (Page 20). REPEAT SAFETY REVERSE TEST after the adjustment is complete. THE NEED FOR OCCASIONAL ADJUSTMENT OF THE FORCE AND LIMIT SETTINGS IS NORMAL. WEATHER CONDITIONS IN PARTICULAR CAN AFFECT DOOR TRAVEL.
Opener lightDoes not turn on
1. Replace the light bulb (75 watts maximum). Use a "garage door opener bulb" if standard bulb bums out prematurely due to vibration. Vibration may be caused by loose end panel. Retighten screws.
Does not turn off
1. There may be a defective ground at ceiling or wall receptacle. UNIT MUST BE GROUNDED.
Opener strains or maximum force is needed to operate door1. Door may be out of balance or springs are broken. Close door and use emergency release rope and handle to disconnect trolley. Open and dose door manually. A properly balanced door will stay in any point of travel while being supported entirely by its springs. If it does not, call for professional garage door service.
Opener motor hums briefly, then wont work1. Garage door springs are broken. SEE ABOVE.
2. The trolley may be jammed into stop bolts. Pull or push on door while motor is humming to release jammed condition. Re-adjust door limits (page 20) to prevent over-travel. REPEAT SAFETY REVERSE TEST after adjustment is complete.
3. If the problem occurs on first operation of the opener, door is locked. DISABLE DOOR LOCK. If chain was removed and reinstalled, motor may be out of phase. Remove chain; cyde motor to the down position. Observe drive sprocket. When it turns in dockwise direction and stops in down position, reinstall chain. REPEAT SAFETY REVERSE TEST after adjustment is complete.
Opener wont operate due to power failure1. Use emergency release rope and handle to disconnect trolley. Door can be opened and closed manually. When the power is restored, press the Wall Push Button and trolley will automatically reconnect. Refer to Page 5 for "Lockout" feature.
2. The emergency release Key Lock accessory (for use on garages with no service door) disconnects the trolley from outside the garage in case of power failure.
Chain droops or sags1. It is normal for chain to droop slightly in the closed door position. Use emergency release rope and handle to disconnect trolley. If chain returns to normal height when the trolley is disengaged and door reverses on a one-inch obstruction, no adjustments are needed (see page 9).
Opener noise is disturbing in living quarters of home1. If operational noise is a problem because of proximity of the opener to the living quarters. Vibration Isolator Kit 41A3263 can be ordered from any Sears Service Center and most Sears Stores. This kit was designed to eliminate the "sounding board effect" and is easy to install.