Having A Problem - Chamberlain 3595S 3/4 HP Owner's Manual

Having a Problem? (Continued)
10. The door reverses for no apparent reason and opener
lights don'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 fl oor area
where the door closes.
• Review Adjustment Step 2.
• 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
lights blink 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 lights don't turn on:
• Replace the light bulbs (100 watts maximum). Use
a standard neck 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 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 briefl y, then won't work:
• The garage door springs may be broken. See above.
• If the problem occurs on the fi rst operation of the
opener, door may be locked. Disable the door lock.
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 bar and trolley will automatically
reconnect (unless trolley is in lockout position.)
See page 27.
• The Outside Quick 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
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 2x4 laid
fl at, no adjustments are needed. (See page 7.)
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