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Having a Problem? (continued)
Situation
Probable
Cause & Solution
The door opens but
won't close:
1. If the opener light blinks, check the safety reversing sensor. See page 21.
2. If the opener light does not blink and it is a new installation, check the down force.
See Adjustment Step 2, page 25. 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 light
doesn? 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 25.
4. If door reverses in the fully closed position, decrease the travel limits (page 24).
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.
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 page 21.
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.
•.. doesn't turn off:
There may be a defective ground at the ceiling or wall receptacle. The unit must be
grounded.
The opener strains or
maximum force is
needed to operate
door:
The door may be out of balance or the springsare broken. Close the door and use the
emergency release handle to disconnect the trolley.Open and close the door manually.
A propedybalanced 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.
2.
The garage door springs are broken. See above.
If the problem occurs on the first operation of the opener, door may be locked. Disable
the doorlock. If the chain was removed and re-installed, the motor may be out of phase.
Remove the chain; cycle the motor to the down position. Observe the ddve 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•
The opener won't
operate due to
power failure:
1. Use the emergency release rope and handle to disconnect the trolley. The door can
be opened and closed manually. When power is restored, press the door control
button and trolley will automatically reconnect (unless trolley is in lockout position.)
See page 28.
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.
The chain droops
or sags:
It is normal for the chain to droop slightly in the closed door position. Use the
emergency release rope and handle to disconnect the trolley. If the chain returns to the
normal height when the trolley is disengaged and the door reverses on a
one-inch board (or a 2x4 laid flat), no adjustments are needed. (See page 10.)
31
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