Chamberlain LiftMaster 398LM Owner'S Instructions Download Page 2

Using the Wall-Mounted 
Control Console

THE LCD MOTION DETECTING CONTROL CONSOLE

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 it's
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 then activate the opener, the light will
remain on for 4-1/2 minutes. Press again to turn it off sooner.
The 4-1/2 minute interval can be changed to 1-1/2, 2-1/2, or
3-1/2 minutes as follows: Press and hold the Lock button
until the light blinks (about 10 seconds). A single blink
indicates that the timer is reset to 1-1/2 minutes. Repeat the
procedure and the light will blink twice, resetting the timer to
2-1/2 minutes. Repeat again for a 3-1/2 minute interval, etc.,
up to a maximum of four blinks and 4-1/2 minutes.

When using the opener lights as working lights, we
recommend that you first disable the motion sensor. See

Automatic Light Feature, 

below.

Lock feature

Designed to prevent operation of the door from 
hand-held remote controls. However, the door will open and
close from the Door Control, the Outdoor Key Switch and the
Keyless Entry Accessories.

To activate, press and hold the Lock button for 2 seconds.

To turn off, press and hold the Lock button again for
2 seconds. The Lock feature will also turn off whenever the
“learn” button on the motor unit panel is activated.

Motion Sensing (Automatic Light Feature):

The opener

light will turn on automatically when a person enters the
garage. When a person walks in front of the door control, the
light will come on for five minutes, then shut off. This feature
works by detecting body heat.

To disable this feature, push the motion sensing
button on the side of the door control.

We recommend that you disable the motion sensor when
using the opener lights as working lights. Otherwise, they will
turn off automatically if you are working beyond the sensors
range.

Motion Sensing 

On/Off 

Prog <Learn>

Hour 

Minute 

Language 

Degrees (F/C) 

Lock Button 

Light 
Button 

Push 
Bar 

LOCK 

LIGHT 

(PROG) 

Learn Feature

The control console is equipped with a Prog <LEARN>
button to assist in learning remote controls to the unit. Press
the Prog <LEARN> button once to initiate LEARN mode and
the display will show ‘Learn Remote Control - Press LEARN
Button Again to Confirm. After pressing the Prog <LEARN>
button a second time the display will show ‘Learn Mode -
Press Remote Control Button to Learn Remote.’ Press the
button of the remote control to be learned and the worklight
will blink to confirm the remote control has been learned.

Hour & Minute Feature

Press or hold either of these side buttons to

increment the hour or minute displayed on the LCD display.

(LANG) 

Language Feature

Press this side button to toggle between the three
languages - English, French and Spanish.

Degrees F/C Feature

Press this side button to toggle the temperature

units between Fahrenheit and Celsius.

Display Contrast Adjustment

Press and hold the light button then push the hour button to
increase the contrast or the minute button to decrease the
contrast.

Additional feature when used with the 3-Button
hand-held remote

To control the opener lights:

In addition to operating the door, you
may program the remote to operate
the lights.

1. With the door closed, press and hold a small remote

button that you want to control the light.

2. Press and hold the Light button on the door control.

3. While holding the Light button, press and hold the Lock

button on the door control.

4. After the opener lights flash, release all buttons.

LIGHT

LOCK

H

M

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Summary of Contents for LiftMaster 398LM

Page 1: ...ing plastic housing Do NOT overtighten Replace cover by inserting top tabs first and then snap cover in place 4 For standard installations ONLY Run bell wire up wall and across ceiling to motor unit Use insulated staples to secure wire in several places Do NOT pierce wire with a staple creating a short or open circuit 5 Strip 7 16 11 mm of insulation from end of bell wire Connect bell wire to the ...

Page 2: ...ll come on for five minutes then shut off This feature works by detecting body heat To disable this feature push the motion sensing button on the side of the door control We recommend that you disable the motion sensor when using the opener lights as working lights Otherwise they will turn off automatically if you are working beyond the sensors range Motion Sensing On Off Prog Learn Hour Minute La...

Page 3: ...e door 4 When the motor unit lights blink it has learned the code If light bulbs are not installed two clicks will be heard To Add or Reprogram a Remote Control NOTE This method requires two people if the Keyless Entry is already mounted outside the garage LOCK LIGHT TO ADD ADDITIONAL REMOTE CONTROLS USING THE LCD CONTROL CONSOLE USING THE LCD CONTROL CONSOLE LOCK LIGHT LOCK LIGHT LOCK LIGHT To Er...

Page 4: ...as been pressed on the Control Console Pressing the Prog LEARN button again will allow the user to program an additional remote control to the opener Meaning This message will appear when the Prog learn button has been pressed a second time on the Control Console or anytime on the opener The opener is ready to program another remote control by simply pressing the remote control button Once the ope...

Page 5: ......

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