Chamberlain MR850EVO, MR650EVO operating instructions Troubleshooting

TROUBLESHOOTING

1. The opener will not operate from either the	• Repeat the limit and force setting in section 13.
ACTIVATION button or the transmitters :	Repeat safety reverse test after adjustments.
	9. The opener strains to operate door:
• Does the opener have electric power? Plug a lamp into
	• The door may be out of balance or the springs may
the outlet. If it does not work, check the fuse box.
	be broken. Close the door and use the manual
• Have you disabled all door locks? Review installation
instruction warnings on page 1.	release to disconnect the door. Open and close the

•Is there a build-up of ice or snow under the door?doorThe manually. A properly balanced door will stay in door may be frozen to the ground. Remove any any point of travel while being supported entirely b

restriction.	its springs. If it does not, disconnect the opener an
• The garage door spring may be broken. Have it	call a trained door systems technician.
replaced.	10. The opener motor hums briefly, then will not
2. Opener operates from the transmitter, but not	work:
from the wired wall control (optional accessory): • Check that the door is not in manual release mode
	(refer section 8).
• Is the wall control lit? If not, reverse the two wires. If
	• The garage door springs may be broken. See above.
the opener runs, check for a faulty wire connection at
	• If the problem occurs on the first operation of the
the wall control, a short under the staples, or a broken
wire.	opener, door may be locked. Disable any door locks.
	11. The opener will not operate due to power
• Are the wiring connections correct? Refer to wired wall
control instructions.	failure:
3. The door operates from the ACTIVATION button	• Use the manual release handle to disconnect the
or wired wall control, but not from the wireless	door. The door can be opened and closed manually.
wall control or transmitter:	When power is restored, re-engage the opener (refer
	section 8).
• If the wired wall control is installed and it is flashing,
ensure the lock feature is off.	• If a Battery Back up Unit is connected, the opener

•Program the opener to match the transmitter codeshould. be able to operate up to 20 times without

(Refer to section 18). Repeat with all transmitterspower. .

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.

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 ACTIVATION 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 reverses and stops before opening completely:

•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 lights blink 10 times after reversing:

• Check the Protector SystemTM (IR Beams), if

installed. Correct alignment if the red light on the beam is solid.

8.The door opens but will not close or reverses while closing:

•Is something obstructing the door? Pull the manual 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.

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