Chamberlain LiftMaster 398LM Owner'S Instructions Download Page 3

1. Press the Prog <Learn> button on

the LCD/Motion Detecting Control
Console.

2. Press the Prog <Learn> button

again to confirm Learn Mode.

3. Enter a four digit personal

identification number (PIN) of your
choice on the keypad. Then press
enter.

4. When the motor unit lights blink, it

has learned the code. If light bulbs
are not installed, two clicks will be
heard.

1. Press the Prog <Learn> button on

the LCD/Motion Detecting Control
Console.

2. Press the Prog <Learn> button

again to confirm Learn Mode.

3. Press the button on the hand-held

remote that you wish to operate
your garage 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. 

LOC

K

LIGH

T

TO ADD ADDITIONAL REMOTE CONTROLS
USING THE LCD CONTROL CONSOLE

USING THE LCD CONTROL CONSOLE

LOC

K

LIGH

T

LOC

K

LIGH

T

LOC

K

LIGH

T

To Erase All Codes From Motor Unit Memory

To deactivate any unwanted remote, first erase all codes:

Press and hold the “learn” button on motor unit until the learn indicator light goes out (approximately
6 seconds). All previous codes are now erased. Reprogram each remote or keyless entry you wish to
use.

1

3

5

kg

To Add, Reprogram or Change a Keyless
Entry PIN

LOC

K

LIGH

T

3

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...

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