Situation
The door opens but won't close:
Having a Problem? (continued)
Probable Cause & Solution
1.If the opener lights blink, check the safety reversing sensor. See page 23.
2.If the opener lights do not I_link 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? blink:
The door reverses for no apparent reason and opener lights blink for 5 seconds after reversing:
The opener lights:
The opener strains or maximum force is
needed to operate door:
The opener motor
hums briefly, then won't work:
1.Is something obstructing the door? Pull the red 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 fullyclosedposition, decrease the travel limits (page 28).
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•
Check the safety reversing sensor. Remove any obstruction or align the receiving eye. See page 23.
•..don't turn on:
Replace the light bulbs (75 watts maximum). Use a standardneckgarage door opener bulb if regular bulb burns out.
•..don't turn off:
Is the Light feature on? Turn it off.
The door may be out of balance or the springs are broken. Close the door and use the emergency release 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 itssprings. If it does not, disconnect the opener and call a professionalgarage door serviceman. Do not increase the force to operate the opener.
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 doorlock. If the belt was removed and reinstalled, the motor may be out of phase. Remove the belt; 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 belt. Repeat the safety reverse test after the adjustment is complete.
The opener won't operate due to
power failure:
The belt droops or sags:
1.Use the emergency release to disconnect the trolley. The door can be opened and closed manually. When the power is restored, press the Door Control push button 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.
It is normal for the belt to droop slightly in the closed door position. Use the manual release rope and handle to disconnect the trolley. If no droop remains when the outer trolley is disengaged, no adjustments are needed.
35
