Chamberlain 3840 Garage Door Opener User Manual


 
27
Using the Smart Control Panel
®
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 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.
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.
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
On/Off
Prog <Learn>
Hour
Minute
Language
Degrees (F/C)
Lock Button
Light
Button
Push
Bar
LOCK
LIGHT
LOCK
LIGHT
(PROG) Learn Feature
The door control is equipped with a PROG <LEARN>
button to assist in learning remote controls to the opener.
Press the PROG <LEARN> button once to initiate LEARN
mode and the display will show ‘Learn Remote Control -
Press Learn Button Again to Confirm’. Press the PROG
<LEARN> button a second time and 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.
H M