Chamberlain 3840 Garage Door Opener User Manual


 
29
Using the Remote Control
NOTE: To activate the remote control functions, pull out
the plastic pull tab protruding from the remote control
housing.
This remote control is equipped with a proximity lighting
feature. When moving a hand within close proximity to the
remote control, the LED lights turn on for 3 seconds. Upon
successful activation of a remote control button, the LED
lights will blink rapidly.
Proximity Disable Feature
The remote control will turn off the proximity lighting
feature if the proximity lighting is turned on 10 consecutive
times without activation of a button. To re-enable the
proximity lighting, simply press a button. This function
conserves battery life.
To Control the Opener Lights
With 315 MHz Security
®
remote controls, a remote push
button can be programmed to operate the opener lights
without opening the door.
1. With the door closed, press and hold the remote button
that you want to control the light.
2. Press and hold the Light button on the Smart Control
Panel
®
.
3. Press and hold the Lock button on the Smart Control
Panel
®
.
4. After the opener lights flash, release all buttons.
Test by pressing the remote push button. The opener
lights should turn on or off but the door should not move.
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 button
Replace two 3V2016 batteries
with same type 3V2016 coin
cells.
PROBLEM SOLUTION
NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of this
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the
battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
To replace the batteries,
remove the two screws and
open the remote control
housing. Push the battery out
of the holder for removal.
Insert replacement batteries
positive side up. Dispose of
old batteries properly.
Replace the batteries with
only 3V2016 or 3V2450 coin
cell batteries.
CAUTION: Do not bend spring contact. If bent the
proximity sensor will not work.
LED and
Opener
Batteries
Proximity
Battery
Spring
Contact
The Remote Control Battery
To prevent possible SERIOUS INJURY or DEATH:
• NEVER allow small children near batteries.
• If battery is swallowed, immediately notify doctor.
To reduce risk of fire, explosion or chemical burn:
• Replace ONLY with 3V2016 or 3V2450 coin batteries.
• DO NOT recharge, disassemble, heat above 100°C (212°F) or
incinerate.
The 3V2016 lithium batteries for the opener and LED
lights (marked “LED and Opener Battery”) should last 5
years. The 3V2450 lithium battery for the proximity lighting
(marked “Proximity Battery”) should last 1-2 years.