Craftsman 139.18054 Owner's Manual

34Having a Problem?1. The opener doesn't operate from either the DoorControl or the remote control:• Does the opener have electric power? Plug a lamp into theoutlet. If it doesn't light, check the fuse box or the circuitbreaker. (Some outlets are controlled by a wall switch.)• Have you disabled all door locks? Review installationinstruction warnings on page 11.• Is there a build-up of ice or snow under the door? The doormay be frozen to the ground. Remove any restriction.• The garage door spring may be broken. Have it replaced.• Repeated operation may have tripped the overloadprotector in the motor. Wait 15 minutes and try again.2. Opener operates from the remote, but not from theDoor Control:• Is the door control lit? if not, remove the bell wire from theopener terminal screws. Short the red and white terminalsby touching both terminals at the same time with a piece ofwire. If the opener runs, check for a faulty wire connectionat the Door Control, a short under the staples, or brokenwire.• Are the wiring connections correct? Review InstallationStep 6, page 18.3. The door operates from the Door Control, but not fromthe remote control:• Is the door push button flashing? If your model has theLock feature, make sure it is off.• Program the opener to match the remote control code.(Refer to instructions on the motor unit panel.) Repeat withall 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 ofmotor unit extends fully downward.• Some installations may have shorter range due to a metaldoor, 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 theopener to the living quarters, the Vibration Isolator Kit41A3263 can be installed. This kit was designed tominimize 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 andoperate from the remote only. If this solves the problem, thedoor control is faulty (replace), or there is an intermittent shorton 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, orare the springs broken? Remove the obstruction or repairthe door.• If the door is in good working order but now doesn't openall the way, increase the up force. See Adjustment Step 2.• If the door opens at least 5 feet (1.5 m), the travel limitsmay need to be increased. One turn equals 2" (5 cm) oftravel. See Adjustment Step 1.Repeat the safety reverse test after the adjustment iscomplete.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 doorarm length, close force or down limit.9. The door opens but won't close:• If the opener lights blink, check the safety reversing sensor.See Installation Step 10.• If the opener lights don’t blink and it is a new installation,check the down force. See Adjustment Step 2. For anexisting installation, see below.Repeat the safety reverse test after the adjustment is complete.10. The door reverses for no apparent reason and openerlights don’t blink:• Is something obstructing the door? Pull the emergencyrelease handle. Operate the door manually. If it is unbalancedor binding, call a trained door systems technician.• Clear any ice or snow from the garage floor area wherethe door closes.• Review Adjustment Step 2.• If door reverses in the fully closed position, decrease thetravel limits (Adjustment Step 1).Repeat safety reverse test after adjustments to force or travellimits. The need for occasional adjustment of the force andlimit settings is normal. Weather conditions in particular canaffect door travel.11. The door reverses for no apparent reason and openerlights blink for 5 seconds after reversing:• Check the safety reversing sensor. Remove any obstructionor align the receiving eye. See Installation Step 10.12. The opener lights don't turn on:• Replace the light bulbs (75 watts maximum). Use a standardneck garage door opener bulb if regular bulb burns 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 tooperate door:• The door may be out of balance or the springs may bebroken. Close the door and use the emergency releasehandle to disconnect the trolley. Open and close the doormanually. A properly balanced door will stay in any point oftravel while being supported entirely by its springs. If it doesnot, disconnect the opener and call a trained door systemstechnician. Do not increase the force to operate theopener.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 wasremoved 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 clockwisedirection and stops in the down position, reinstall the chain.Repeat the safety reverse test after the adjustment iscomplete.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 poweris restored, press the Door Control push button and trolleywill automatically reconnect (unless trolley is in lockoutposition.) See page 32.• The Emergency Key Release accessory (for use ongarages with no service door) disconnects the trolley fromoutside 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 doorposition. Use the emergency release to disconnect thetrolley. If the chain returns to normal height when the trolleyis disengaged and the door reverses on a 1" (2.5 cm)board, no adjustments are needed (see page 11).