Chamberlain ML700-GB Instructions Manual Download Page 9

Page: 9 / 28

8-GB

12. Opener strains:

Door may be unbalanced or springs are broken. Close door and use
manual release rope and handle to disconnect trolley. Open and close
door manually. A properly balanced door will stay in any point of travel
while being supported entirely by its springs. If it does not, call for
professional garage door service to correct the problem.

13. Opener motor hums briefly, then won't work:

• Garage door springs are broken. SEE ABOVE.

• If problem occurs on first operation of opener, door is locked. Disable

door lock.

Repeat safety reverse test after adjustment is complete.

14. Opener won't activate due to power failure:

• Pull manual release rope and handle down to disconnect trolley.

Door can be opened and closed manually. When the power is
restored, pull the manual release handle straight back. The next time
the opener is activated, the trolley will reconnect.

• The Outside Quick Release accessory (if fitted) disconnects the

trolley from outside the garage in case of power failure.

15. Setting the limits manually:

1. Press and hold the black button until the yellow indicator light starts

flashing slowly then release.

2. Push and hold the black button until the door reaches the desired

UP (open) position. Adjust the position of the door by using the
black and orange buttons. Black moves the door UP (open) and
orange moves the door DOWN (close).

Check to be sure the door opens high enough for your vehicle.

3. Push the remote control or door control. This sets the UP (open)

limit and begins closing the door. Immediately press either the
orange or the black button. The door will stop.

Adjust the desired DOWN (close) limit position using the black and

orange buttons. Check to be sure the door is fully closed without
applying excessive pressure on the rail (rail should not bow
upwards and the chain/belt should not sag or droop below the rail).
Push the remote control or door control. This sets the DOWN
(close) limit and begins opening the door.

NOTE: If neither the black or the orange button is pressed before the
door reaches the floor, the GDO will attempt an Automated Limit
Setting, reversing the door off the floor and stopping at the set Up
limit. If the worklight does not blink 10 times, limits setting has been
successful and doesn't need to be manually done; the DOWN limit will
be set to the floor.

Regardless of setting the limits automatically or manually, the
force MUST be learned in order to properly complete the setting
of limits. Refer to section 26, Setting the Force.

4. Open and close the door with the remote control or door control 2

or 3 times.

• If the door does not stop in the desired UP (open) position or

reverses before the door stops at the DOWN (close) position,
repeat Setting the limits manually one more time.

• If the door stops in both the desired UP (open) and DOWN (close)

positions, proceed to Test the Safety Reversal System.

HAVING A PROBLEM?

1. Opener doesn't operate from either door control or remote:

• Does the opener have electric power? Plug lamp into outlet. If it

doesn't light, check the fuse box or the circuit breaker. (Some outlets
are controlled by a wall switch.)

• Have you disengaged all door locks? Review installation instruction

warnings on page 1.

• Is there a build-up of ice or snow under door? The door may be

frozen to ground. Remove any obstruction.

• The garage door spring may be broken. Have it replaced.

2. Opener operates from remote but not from door control:

• Is door control button lit? If not, remove the bell wire from the opener

terminals. 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.

• Are wiring connections correct? Review page 4.

3. Door operates from door control but not from remote:

• Replace battery if necessary.

• If you have two or more remotes and only one operates, review

Program Your Opener, Remote and Keyless Entry steps 22 and 23.

• Is the door control button flashing? The opener is in lock mode. If you

have a Multi-Function Door Control, push and hold the Lock button
for 2 seconds. The door control button will stop flashing.

4. Remote has short range:

• Is battery installed?

• Change the location of the remote control on the car.

• A metal garage door, foil-backed insulation or metal siding will reduce

the transmission range.

5. Door reverses for no apparent reason and opener light doesn't

blink:

• Is something obstructing the door? Pull manual release handle.

Operate door manually. If it is unbalanced or binding, call for
professional garage door service.

• Clear any ice or snow from garage floor area where garage

door closes.

• Repeat Setting Limits and Force, see adjustment steps 25 and 26.

Repeat safety reverse test after adjustment is complete.

6. Door reverses for no apparent reason and opener light blinks

for 5 seconds after reversing:

Check The Protector System™ (if you have installed this accessory).
If the light is blinking, correct alignment.

7. 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, Vibration Isolator Kit 41A3263 can be installed. This
kit was designed to reduce the "sounding board effect" and is easy to
install.

8. The garage door opens and closes by itself:

Make sure remote push button is not stuck "on".

9. Door stops but doesn't close completely:

Repeat Setting the Limits, see adjustment step 25.

Repeat safety reverse test after any adjustment of door arm length,
close force or down limit.

10. Door opens but won't close:

• Check The Protector System™ (if you have installed this accessory).

If the light is blinking, correct alignment.

• If opener light does not blink and it is a new installation, repeat

Setting the Limit and Force steps 25 and 26.

Repeat the safety reverse test after the adjustment is complete.

11. Opener light does not turn on: