Chamberlain 2000SDC 1/2HP - Manual (Page 30)

Situation
Having a Problem?
Probable Cause & Solution
The opener doesn't 1.
operate from either
the door control or
2.
the remote control:
3.
4.
5.
fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.)
Remove any restriction.
15 minutes. Try again.
Opener operates from
the remote control, but
not from the door
control:
1. Is the door control push bar lit? If not, Remove the bell wire from the opener terminal
screws. Short the red and white terminals by touching both terminals at the same time with
a piece of wire. If the opener runs, check for a faulty wire connection at the door control, a
short under the staples, or a broken wire.
2. Are the wiring connections correct? Review Installation Step 7, page 17.
The door operates from
the door control, but not
from the remote
control:
1. If your model has the Lock feature, turn it off.
2. Is the wall push button flashing? Your opener needs to re-learn a remote control code.
Refer to instructions on the opener panel.
3. Does the battery test light glow when the remote control push button is pressed? If not,
replace the battery.
4. Program the receiver to match the remote control code.
5. Repeat the receiver programming procedure with all remote controls.
The remote control has
short range:
1. Check the battery test light. If the light is dim, replace the battery.
2. Change the location of the remote control in your car.
3. Check to be sure the antenna on the right side panel of opener extends fully.
4. Some installations may have shorter range due to a metal door, foil backed insulation, or
metal garage siding.
Opener noise is
disturbing in living
quarters of home:
If operational noise is a problem because of proximity of the opener to the living quarters, the
Vibration Isolator Kit 41A3263 can be installed. This kit was designed to minimize vibration
to the house and is easy to install.
The garage door
opens and closes by
itself:
1. Be sure that all remote control push buttons and battery indicator lights are off.
2. Remove the bell wire from the door control terminals and operate from the remote control
only. If this solves the problem, the door control is faulty (replace), or there is an
intermittent short on the wire between the door control and the opener.
The door doesn't open
completely:
1. If the door has been working properly but now doesn't open all the way, increase the up
force. See page 25.
2. Is something obstructing the door? Remove the obstruction or repair the door.
3. If door opens at least 5 feet, the travel limits may need to be increased. One turn equals
2 inches of travel. See page 24.
Repeat the safety reverse test after the adjustment is complete.
The door stops but
doesn't close
completely:
Review the travel limits adjustment procedures on page 24.
Repeat the safety reverse test after any adjustment of door arm length, close force or down
limit.
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