Craftsman Garage Door Opener 34 Manual

21
ADJUSTMENT STEP 2
Adjust the Force
Force adjustment controls are located on the right side
panel of the motor unit. Force adjustment settings regulate
the amount of power required to open and close the door.
If the forces are set too light, door travel may be
interrupted by nuisance reversals in the down direction
and stops in the up direction. Weather conditions can
affect the door movement, so occasional adjustment may
be needed.
The maximum force adjustment range is about 3/4 of a
complete turn. Do...

22
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door. 
• Safety reversal system MUST be tested every month.
• If one control (force or travel limits) is adjusted, the othercontrol may also need adjustment.
• After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2"
high (3.8 cm) object (or 2x4 laid flat) on the floor.
ADJUSTMENT STEP 3
Test...

OPERATION 
23
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNING
WARNING
1. READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS.
2. ALWAYS keep remote controls out of reach of children. NEVER permit children to operate or play with garage
door control push buttons or remote controls. 
3. ONLY activate garage door when it can be seen clearly, it is properly adjusted, and there are no obstructions to
door travel.
4. ALWAYS keep garage door in sight until...

24
Using the Wall-Mounted 
Door Control
THE SMART CONTROL PANEL™
Press the push bar to
open or close the
door. Press again to
reverse the door
during the closing
cycle or to stop the
door while its
opening.
This door control
contains a motion
sensing detector that
will automatically turn
on the light when it
detects a person entering the garage.Light feature
Press the Light button to turn the opener light on
or off. It will not control the opener lights when the
door is in motion. If you turn it on and...

Troubleshooting
Reduced proximity
sensing (does not
activate by
touching top of
remote control)
Check if proximity lighting is
disabled by pressing a button.
Replace 3V2450 battery with
same type 3V2450 coin cell.
The Proximity Sensor may be
oversensitized. Sit remote control
undisturbed for 60 seconds on a 
non-metallic surface. This allows
the sensor to recalibrate itself.
Dim LED lights
Replace two 3V2016 batteries
with same type 3V2016 coin
cells.
No rapid LED
blinking after
pressing a buttonReplace...

CARE OF YOUR GARAGE DOOR
OPENER
LIMIT AND FORCE ADJUSTMENTS:
Weather conditions may cause
some minor changes in door
operation requiring some 
readjustments, particularly during
the first year of operation.
Pages 20 and 21 refer to the limit
and force adjustments. Only a
screwdriver is required. Follow the
instructions carefully.
Repeat the safety reverse test
(Adjustment Step 3, page 22)
after any adjustment of limits or
force.
MAINTENANCE SCHEDULE
Once a Month
a trained door systems technician.
 limits...

Having a Problem? (Continued)
5. Opener noise is disturbing in living quarters ofhome:
 If operational noise is a problem because of proximity of the opener to the living quarters, the Vibration Isolator
Kit 89LM can be installed. This kit was designed to
minimize vibration to the house and is easy to install.
6. The garage door opens and closes by itself:
 Be sure that all remote control push buttons are off.
 Remove the bell wire from the door control terminals and operate from the remote only. If this...

Meaning: This message will appear if the Safety Reversing Sensors are out of
alignment, if they are blocked or if the wiring is disconnected. To clear message
from Door Control do the following:
 Check to see that area is clear between the Safety Reversing Sensors.
 Check to see that the Safety Reversing Sensors are not misaligned.

 Check to see that the Safety Reversing Sensors’ wires are connected to the motor unit.
 If message has not cleared after the above checks, refer to message #2.
Meaning: This...

To Add or Reprogram a Hand-held Remote Control
USING THE “LEARN” BUTTONUSING THE  SMART  CONTROL  PANEL™
PROGRAMMING
*3-Button Remotes
If provided with your garage door opener, the large button
is factory programmed to operate
it. Additional buttons on any
Security✚®3-Button remote
or compact remote can be
programmed to operate other
Security✚®garage door
openers.
To Erase All Codes From Motor Unit Memory
To deactivate any unwanted remote, first erase all codes:
Press and hold the “learn” button on...

30
1. Press and release the “learn” buttonon motor unit. The learn indicator light
will glow steadily for 30 seconds.
2. Within 30 seconds, enter a four digit personal identification number (PIN)
of your choice on the keypad. Then
press and hold the ENTER button.
3. Release the button when the motor unit lights blink. It has learned the
code. If light bulbs are not installed,
two clicks will be heard.
To Add, Reprogram or Change a Keyless Entry PIN
NOTE: Your new Keyless Entry must be programmed to...