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LiftMaster 3850 Support Question

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Question posted by gcirulli301 on July 7th, 2016

Troubleshooting Battery Backup Not Working

I have a Liftmaster 3850 with battery backup, the garage door opens and closes with the remotes but the battery backup does not work at all. Tried replacing the battery with a new one but that did not solve the problem either. Any thoughts.

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Answer #1: Posted by TommyKervz on July 14th, 2016 4:40 AM

TommyKervz

Member since:
January 10th, 2013

Points: 17,776,793

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If the battery backup is not working even after replaced with a new one' Service is required. request assistance here http://liftmaster.custhelp.com/app/ask/

Hope that is helpful.
Kervz at www.satechhelp.co.za

Related LiftMaster 3850 Manual Pages

3850 Elite Series Manual - Page 2

...Using the remote control 28 Troubleshooting 28 The remote control battery 28 EverCharge® Standby Power System (optional 29 To open the door manually 30 Care of your garage door and/or the garage door opener if you do not comply with the warnings that accompany it will alert you to the possibility of damage to your opener 30 Having a problem? (Troubleshooting 31 Diagnostic...

3850 Elite Series Manual - Page 5

...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..., carefully check the packing material. Carton Inventory Your garage door opener is packaged in the foam.

3850 Elite Series Manual - Page 7

... of 5 feet (1.5 m). • away from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. 7 Please read the following warnings before proceeding to do so. 8. Install garage door opener 7 feet (2.1 m) or more above floor. 7. NEVER connect garage door opener to power source until instructed to the installation section. Disable ALL...

3850 Elite Series Manual - Page 8

...the top edge of the garage door. 2. This height will provide travel as shown here and on page 9. 3. Close the door and mark the inside vertical centerline of the door. Open your door. 1. DO NOT install ...into masonry. • NEVER try to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL of which apply to your door to the highest point of...

3850 Elite Series Manual - Page 14

... than 100W. • ONLY use halogen bulbs. Channel Battery Battery Cover INSTALLATION STEP 8 Install the Lights • Press the release tabs on both sides of lens. 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 in...

3850 Elite Series Manual - Page 15

... ALL electric and battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be grounded. • Reinstall the cover. If the plug doesn't fit into a grounding type outlet. RIGHT WRONG If permanent wiring is clear of persons and obstructions. • NEVER use handle to pull door open or closed. the white...

3850 Elite Series Manual - Page 16

...garage door opener will move in masonry if repositioning is not connected to the garage door opener BEFORE installing the safety reversing sensor. The mounting brackets are available if needed. Extension brackets (see Accessories) are designed to full open position, and the opener... inside the garage. Safety Reversing Sensor 6" (15 cm) max. If it is closing garage door: •...

3850 Elite Series Manual - Page 18

... Terminals If the door is closing, the door will glow regardless of wires. See page 16. Be sure the lens is dim, realign either sensor. If the green indicator light in the opener. When the green indicator light glows steadily, tighten the wing nut. Figure 5 Wing Nut 1/4"-20 Carriage Bolt 1/4"-20x1/2" Lens TROUBLESHOOTING THE SAFETY...

3850 Elite Series Manual - Page 23

..., if there appears to reach the desired closed ) position. 6. Push and hold until the door reaches the desired UP (open door provides adequate clearance. Black moves the door UP (open) and purple moves the door DOWN (close ) limit and the door should open ) limit and begins closing garage door. • Incorrect adjustment of garage door travel limits will stop when moving up or...

3850 Elite Series Manual - Page 24

... for a binding or sticking garage door. • After ANY adjustments are made, the safety reversal system MUST be set properly. Push the door control or programmed remote control. The LED will close the door (DOWN). Figure 1 n n LED Black Button Purple Button Figure 2 Push Purple button twice to open and close the door fully, inspect the door to ensure that it...

3850 Elite Series Manual - Page 25

...). • Any repair to or buckling of the garage floor. • Any repair to or adjustment of the door. • Press the remote control push button to close from a remote if the indicator light in either sensor is off (alerting you to fail the Safety Reverse Test, call for a trained door systems technician. The garage door opener will flash.

3850 Elite Series Manual - Page 26

.... 15. ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED (see page 3). If you purchase a new remote, or if you could result in an open , the door will close when the beam is adjusted, the other hardware, ALL of which changes with up to deactivate any of persons and obstructions. 8. Activate your opener with your garage door opener, it will open garage door. If the obstruction interrupts...

3850 Elite Series Manual - Page 28

... 3 seconds. Insert replacement batteries positive side up. The Proximity Sensor may cause undesired operation. Troubleshooting PROBLEM SOLUTION Reduced proximity sensing (does not activate by pressing the remote push button. NOTICE: To comply with same type 3V2016 coin cells. Dispose of a remote control button, the LED lights will not work. Push the battery out of...

3850 Elite Series Manual - Page 29

... unplugged for disposal instructions. Check with beep indicates the unit is operating on battery power and that the battery charge is low. • To test the battery is functioning properly, open and close the garage door. • Re-connect the motor unit power cord back into the electrical outlet. • Verify that the green LED is now...

3850 Elite Series Manual - Page 30

... and obstructions. • NEVER use emergency release handle unless garage doorway is CLOSED. Once a Year • Oil door rollers, bearings and hinges. To reconnect the door to pull door open door falling rapidly and/or unexpectedly. • NEVER use handle to the opener, press the door control push bar. The opener does not require additional lubrication. Pull down on the...

3850 Elite Series Manual - Page 31

... Door Control. • Reprogram remotes following page. 2. If the trolley re-engages with beep, sounding every 30 seconds, indicates battery is low. • If a red LED remains on when the power is restored, and is operating off when door is open: • The garage door opener is against the stop . If battery status LED is normal. My door will not close...

3850 Elite Series Manual - Page 32

... LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is dim or flashing. • Realign receiving eye sensor, clean lens and secure brackets. Symptom: One or both of the Indicator lights on the safety reversing sensors do not light, replace the safety reversing sensors. 3 FLASHES Door control or wire shorted. 4 FLASHES Safety reversing...

3850 Elite Series Manual - Page 33

The opener is beyond a recoverable condition. Message LOCK MODE REMOTE CONTROL LOCKED OUT PRESS LOCK BUTTON TO ENABLE REMOTE Message ENGLISH, FRANÇAIS AND ESPAÑOL Message MOTION SENSING ON MOTION SENSING OFF Message BATTERY BACKUP ENABLED Message BATTERY BACKUP ENABLED Message BATTERY LOW BATTERY BACKUP ENABLED Message BATTERY BAD REPLACE BATTERY NOW SEE OWNER'S MANUAL Message POWER ...

3850 Elite Series Manual - Page 38

... a garage with model 3850 only. Includes battery. Laser Park Assist: Laser enables homeowners to turn on a specially designed keyboard. For use with NO access door. SECURITY✚® 4-Button Remote Control : Includes visor clip. EverCharge® Standby Power System: Provides backup power to a programmable number of hours or entries. 370LM 378LM 915LM CLOSED OPEN Garage Door...

3850 Elite Series Manual - Page 40

... BATTERY, WHICH IS LIMITED IN DURATION TO ONE YEAR, MOTOR AND BELT, WHICH ARE LIMITED IN DURATION TO THE LIFETIME LIMITED WARRANTY PERIOD FOR THE MOTOR AND BELT, AND NO IMPLIED WARRANTIES WILL EXIST OR APPLY AFTER SUCH PERIOD. THIS LIMITED WARRANTY DOES NOT COVER ANY PROBLEMS WITH, OR RELATING TO, THE GARAGE DOOR...