TROUBLESHOOTING
1. The opener doesn't operate from either the
START/STOP button or the transmitter:
• Does the opener have electric power? Plug a lamp into the out-
let. If it doesn't light, check the fuse box.
• Have you disabled all door locks? Review installation instruc-
tion warnings on page 2.
• Is there a build-up of ice or snow under the door? The door may
be frozen to the ground. Remove any restriction.
• The garage door spring may be broken. Have it replaced.
2. Opener operates from the transmitter, but not
from the wired wall control (optional accessory):
• Is the wall control lit? If not, reverse the two wires. If the open-
er runs, check for a faulty wire connection at the wall control, a
short under the staples, or a broken wire.
• Are the wiring connections correct? Refer to wired wall control
instructions.
3. The door operates from the START/STOP button or
wired wall control, but not from the wireless wall
control or transmitter:
• If the wired wall control is installed and it is flashing, ensure the
lock feature is off.
• Program the opener to match the transmitter code. (Refer to
section 24). Repeat with all transmitters.
4. The transmitter has short range:
• Change the location of the transmitter in your car.
• Check to be sure the antenna on the bottom of the opener
extends fully downward.
• Some installations may have shorter range due to a metal door,
foil backed insulation, or metal garage siding.
• Replace transmitter batteries.
5. The garage door opens and closes by itself:
• Be sure that all transmitter push buttons are off.
• If the wired wall control (optional accessory) is installed, remove
the bell wire from the wired wall control terminals and operate
from the START/STOP button or transmitter. If this solves the
problem, the wired wall control is faulty (replace), or there is an
intermittent short on the wire between the wired wall control
and the opener.
• Clear memory and re-program all wireless wall controls and
transmitters.
6. The door will stop, reverses slightly away from the
obstruction then stop:
• Is something obstructing the door? Is it out of balance, or are
the springs broken? Remove the obstruction or repair the door.
7. The door reverses for no apparent reason and
opener light flashes for 5 seconds after reversing:
• Check The Protector System
TM
(IR Beams), if installed Correct
alignment if the red light on the beam is solid.
8. The door opens but won't close or reverses while
closing:
• Is something obstructing the door? Pull the manual
release handle. Operate the door manually. If it is unbal-
anced or binding, call a trained door systems technician.
• Clear any ice or snow from the garage floor area where
the door closes.
• Repeat the limit and force setting in section 18 and section 19.
Repeat safety reverse test after adjustments.
9. The opener strains to operate door:
• The door may be out of balance or the springs may be
broken. Close the door and use the manual release to dis-
connect the door. 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.
10. The opener hums briefly, then won't work:
• Check that the door is not in manual release mode, refer
section 14.
• 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 any door locks.
11. The opener won't operate due to power failure:
• Use the manual release handle to disconnect the door. The door
can be opened and closed manually. When power is restored, re-
engage the opener, refer section 14.
12. The opener flashes once every minute for 10
minutes after operating (optional feature):
• Door and opener requires service. Contact your local
Chamberlain Merlin dealer.
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