Chamberlain 3840 Garage Door Opener User Manual


 
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1. Press the PROG <Learn> button on
the Smart Control Panel
®
.
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.
To Add, Reprogram or Change a Keyless Entry PIN
NOTE: Your new Keyless Entry must be programmed to operate your garage door opener.
USING THE “LEARN” BUTTON USING THE SMART CONTROL PANEL
®
NOTE: This method requires two people if the Keyless
Entry is already mounted outside the garage.
To change an existing, known PIN
If the existing PIN is known, it may be changed by one
person without using a ladder.
1. Press the four buttons for the present PIN, then press
and hold the # button.
The opener light will blink twice. Release the # button.
2. Press the new 4-digit PIN you have chosen, then
press Enter.
The motor unit lights will blink once when the PIN has been
learned.
Test by pressing the new PIN, then press Enter. The door
should move.
To set a temporary PIN
You may authorize access by visitors or service people with
a temporary 4-digit PIN. After a programmed number of
hours or number of accesses, this temporary PIN expires
and will no longer open the door. It can be used to close
the door even after it has expired. To set a temporary PIN:
1. Press the four buttons for your personal entry PIN
(not the last temporary PIN), then press and hold the
button.
The opener light will blink three times. Release the
button.
2. Press the temporary 4-digit PIN you have chosen, then
press Enter.
The opener light will blink four times.
3. To set the number of hours this temporary PIN will
work, press the number of hours (up to 255), then
press .
OR
3. To set the number of times this temporary PIN will
work, press the number of times (up to 255), then
press #.
The opener light will blink once when the temporary PIN
has been learned.
Test by pressing the four buttons for the temporary PIN,
then press Enter. The door should move. If the temporary
PIN was set to a certain number of openings, remember
that the test has used up one opening. To clear the
temporary password, repeat steps 1-3, setting the number
of hours or times to 0 in step 3.
One Button Close: Opener can be closed by pressing only the ENTER button if the one button close feature has been
activated. This feature has been activated at the factory. To activate or deactivate this feature press and hold buttons 1
and 9 for 10 seconds. The keypad will blink twice when the one button close is active. The keypad will blink four times
when one button close is deactivated.
1. Press and release the “learn”
button on 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.
LOCK
LIGHT
LOCK
LIGHT
LOCK
LIGHT