Chamberlain FS2 Security+ Owner's Manual page 35

Having a Problem? (Continued)
7. The door doesn't open completely:
• Is something obstructing the door? Is it out of balance, or are
the springs broken? Remove the obstruction or repair the door.
• If the door is in good working order but now doesn't open all
the way, increase the up force. See Adjustment Step 2.
• If the door opens at least 1.5 m, the travel limits may need to
be increased. One turn equals 5 cm of travel. See Adjustment
Step 1.
Repeat the safety reverse test after the adjustment is complete.
8. The door stops but doesn't close completely:
• Review the travel limits adjustment procedures on
page 29.
Repeat the safety reverse test after any adjustment of door arm
length, close force or down limit.
9. 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 floor 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.
10. The opener lights don't turn on:
• Replace the light bulbs (100 watts maximum). Use a standard
neck A19 garage door opener bulb if regular bulb burns out.
11. The opener lights don't turn off:
• Is the Light feature on? Turn it off.
12. 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.
13. 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.
Repeat the safety reverse test after the adjustment is complete.
14. 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 33.
• 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.
15. 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 38
mm obstruction, no adjustments are needed (See page 15).
35