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 blink and it is a new installation, check the down force. See Adjustmenr 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:
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.
. 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 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.
The opener light:
The opener strains or maximum force is
needed to operate door:
The opener motor hums briefly, then won't work:
... doesn,t turn on:
Replace the light bulbs (75 watts maximum). Use a standard neck garage door opener bulb if regular bulb bums out.
•..doesn_ turn off:
Is the Light feature on? Turn it off.
The door may be out of balance or the springsare broken. Close the door and use the emergency release to disconnectthe 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 professional garage 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 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 itturns in a clockwisedirection and stops in the down position, reinstall the chain.
Repeat the safety reverse test after the adjustment is complete.
The opener won't operate due to power failure:
The chain droops or sags:
1.Use the emergency release to disconnect the trolley.The door can be opened and dosed manually.When the power is restored, pr_ the Door Controlpush button and trolleywill automaticallyreconnect(unlesstrolley is in lockoutpes_on.)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 chain to droop slightly in the closed doer 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
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