Home » LiftMaster » Garage Door Openers » LiftMaster 3850

LiftMaster 3850 Support Question

Find answers below for this question about LiftMaster 3850.
Need a LiftMaster 3850 manual? We have 1 online manual for this item!

LiftMaster Overview Questions Manuals Reviews Videos Research

Question posted by bridaRaw on August 29th, 2014

How Replace 3850 Batteries

The person who posted this question about this LiftMaster product did not include a detailed explanation. Please use the "Request More Information" button to the right if more details would help you to answer this question.

I Know the Answer!

I have the same question
Request More Information

Current Answers

There are currently no answers that have been posted for this question.
Be the first to post an answer!

Remember that you can earn up to 1,100 points for every answer you submit. The better the quality of your answer, the better chance it has to be accepted.

Related LiftMaster 3850 Manual Pages

3850 Elite Series Manual - Page 1

® GARAGE DOOR OPENER Models 3850 3850-267 For Residential Use Only Com Details The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com patible with See Page 29 for Owner's Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■...

3850 Elite Series Manual - Page 2

... and Service 40 Warranty 40 INTRODUCTION Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is installed,...garage door opener 26 Using the wall-mounted door control 27 Using the remote control 28 Troubleshooting 28 The remote control battery 28 EverCharge® Standby Power System (optional 29 To open the door...

3850 Elite Series Manual - Page 3

...To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120V, 60 Hz to avoid entanglement. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of the opener, instructions will call a trained door systems technician if garage door binds, sticks, or is...

3850 Elite Series Manual - Page 5

...Door Control Console SECURITY✚® 3-Button Remote Control Models 3850 (1) 3850-267 (2) SECURITY✚® Keyless Entry Model 3850-267 (1) ONLY Motor Unit with Light Lenses 2-Conductor Bell Wire White & White/Red Belt Pulley Bracket Trolley Optional EBvearttCehryarge® Stan(PdbacykPeodwSeerpSaryastteelym) (battery...Inventory Your garage door opener is packaged in the foam.

3850 Elite Series Manual - Page 6

... unit. This extends the spring for optimum belt tension. To avoid SERIOUS damage to opener, ONLY use any other bolts will cause serious damage to do so. • ... Attach the Rail to the Motor Unit To avoid installation difficulties, do not run the garage door opener until instructed to door opener. • Position belt over belt pulley. Tighten bolts securely. Cut tape from rail...

3850 Elite Series Manual - Page 7

... garage door opener 7 feet (2.1 m) or more above floor. 7. Install wall-mounted garage door control: • within sight of the garage door. • out of reach of children at minimum height of 5 feet (1.5 m). • away from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. 7 Place entrapment warning label on inside of garage door...

3850 Elite Series Manual - Page 11

... unit. The trolley can remain disconnected until Installation Step 12 is convenient for setting an ideal door-to determine the correct mounting height from ceiling. INSTALLATION STEP 4 Position the Opener Follow instructions which apply to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to this height. • The top of...

3850 Elite Series Manual - Page 12

... 5/16" Nut 5/16"-18 12 Hanging brackets should be angled (Figure 1) to structural supports before installing the opener. INSTALLATION STEP 5 Hang the Opener Three representative installations are not provided. 1. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the hanging bracket to the structural support. 2. NOTE: DO NOT connect...

3850 Elite Series Manual - Page 13

..., is properly adjusted and there are desired to operate the same garage door opener, it is not connected BEFORE installing door control. • Connect ONLY to motor unit. The trolley will...Insulated Staples Screw 6-32x1" (pre-wired) Drywall Anchors Figure 1 REMOVE COVER REPLACE COVER To Replace Insert Top Tabs First PRE-WIRED INSTALLATION LOCK LIGHT LOCK LIGHT Push Bar Cover...

3850 Elite Series Manual - Page 14

... is in each socket. To prevent damage to corresponding terminals on battery. • Verify the battery wires are seated in the channel. • Replace battery cover. Then the lights will turn OFF. • Reverse the procedure to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected. Channel...

3850 Elite Series Manual - Page 15

.... RIGHT WRONG If permanent wiring is grounded. The opener must be in compliance with a match or lighter to prevent unraveling. To prevent possible SERIOUS INJURY or DEATH from electrocution or fire: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be grounded. •...

3850 Elite Series Manual - Page 16

... 6" (15 cm) above floor 16 INSTALLATION STEP 11 Install The Protector System® The safety reversing sensor must be connected and aligned correctly before the garage door opener will flash 10 times. IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR When properly connected and aligned, the sensor will detect an obstacle in masonry if...

3850 Elite Series Manual - Page 24

... not stopping exactly where you would like it, repeat Program the Travel Limits. If the garage door opener cannot open and close the door (DOWN). The door must travel through a complete cycle, up and down, in order for a binding or sticking garage door. • After ANY adjustments are made, the safety reversal system MUST be SERIOUSLY INJURED or...

3850 Elite Series Manual - Page 25

.... • Any repair to fail the Safety Reverse Test, call for a trained door systems technician. The garage door opener will flash. ADJUSTMENT STEP 3 Test the Safety Reversal System TEST • With the door fully open the door. • Place the opener carton in the path of the door. • Press the remote control push button to close from a remote...

3850 Elite Series Manual - Page 26

... controls and one control (force or travel . 4. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 5. Using Your Garage Door Opener Your Security✚® opener and hand-held remote. Your opener will stop . 4. NEVER use handle to door travel limits) is 100 watts maximum. If the sensor is not installed, or is activated (with up...

3850 Elite Series Manual - Page 31

..., sounding approximately every 2 seconds, indicates the motor unit is activating the door and is operating off when door is open: • The garage door opener is accompanied by adjusting the outer nut 4 to a closed position. • Loosen the belt by a beep sounding every 30 seconds, replace the battery. 31 Decrease down direction. • Verify the safety reversing sensors...

3850 Elite Series Manual - Page 32

... Diagnostics Located On Motor Unit "Learn" Button LED or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is not recognized. See Adjustment section. • If the motor unit continues to be replaced. 32 Symptom: No movement, motor runs 2-3 seconds. • Reconnect the emergency release. • Motor may need to travel...

3850 Elite Series Manual - Page 34

... operate it has learned the code. It has learned the code. Reprogram each remote or keyless entry you wish to operate other Security✚® garage door openers. 34 Press the PROG button again to circumvent that you press the large push button. Release the button when the motor unit lights blink. When...

3850 Elite Series Manual - Page 35

... after it has learned the code. The learn " button on the keypad. Then press and hold the # button. Then press enter. The opener light will glow steadily for your garage door opener. Press the new 4-digit PIN you have chosen, then press Enter. If light bulbs are not installed, two clicks will blink three...

3850 Elite Series Manual - Page 38

... home with a remote. 975LM 373W Designer Burled Walnut 3-Button Remote Control with model 3850 only. Laser Park Assist: Laser enables homeowners to the garage door opener. ACCESSORIES 1702LM Outside Quick Release: Required for visitors or service persons. Monitors up to 4 garage doors by adding additional sensor modules. 485LM 395LM Remote Light Control : Enables homeowner to protect...