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Most Recent LiftMaster 3900 Questions

Liftmaster 3900pld Has Really Short
I have really short range with any remote that I have ,I have two of these units and have the same i...
(Posted by dwthorn34 3 years ago)
Closing Issues
I am having problems with my garage Door only closing half way. The opener opens the door to the cor...
(Posted by mpotestio 6 years ago)
Trouble Shooting The 3900
I lost electricity for a day and pulled release to close door. How do I get it to unrelease. also no...
(Posted by ramckahan 9 years ago)
Which Is Better Liftmaster 3800 Or 3900
(Posted by limilsatb 9 years ago)

LiftMaster 3900 Videos

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Liftmaster 3900 Hamon Overhead Door Inc
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Popular LiftMaster 3900 Manual Pages

3900PLD Manual - Page 2

... Install The Protector System 14-16 Adjustment 17-20 Program the travel limits 17 Set the force 18 Test the safety reversal system 19 Test The Protector System 19 Test cable tension monitor 20 To open door manually 20 Operation 21-25 Operation safety instructions 21 Using your door operator 21 Care of your garage door and/or the garage door operator...
3900PLD Manual - Page 6

...installation difficulties, do not run the door operator until instructed to do so. • Loosen the collar screws. • Attach collar to collar slip. The door may not reverse correctly or limits may be properly tightened. Do not tighten set screws until instructed.... Figure 1 Collar Screw Set Screw Collar Screw ASSEMBLY STEP 2 Attach Mounting Bracket to the Operator •...
3900PLD Manual - Page 8

... in the top of the garage door track with hardware provided. 5. Plug connector into the motor unit (Figure 2). Drill holes as the motor unit. If possible select a roller on the same side of the door as marked on the template. 4. Use insulated staples to mount the lock above the floor. INSTALLATION STEP 2 Attach the Emergency...
3900PLD Manual - Page 14

... is not connected to the receiving eye (with a green indicator light). The units must be installed inside the garage 14 Safety Reversing Sensor 6" (15 cm) max. INSTALLATION STEP 9 Install The Protector System® The safety reversing sensor must be connected and aligned correctly before the door operator will flash 10 times. The mounting brackets are available if needed.
3900PLD Manual - Page 16

... in tab with lenses pointing toward each other across the door. MOUNTING AND WIRING THE SAFETY REVERSING SENSORS • Slide a 1/4"-20x1/2" carriage bolt head into the slot on each set of alignment or obstruction. Figure 5 Wing Nut 1/4"-20 Carriage Bolt 1/4"-20x1/2" Lens TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1. If the receiving eye indicator light is not obstructed...
3900PLD Manual - Page 18

... door control or programmed remote control. Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing door. • NEVER learn forces or limits when door is not sticking or binding. Repair door first • Too much force on door will flash quickly. 2. ADJUSTMENT STEP 2 Set the Force The force setting...
3900PLD Manual - Page 19

... close the door. Safety Reversing Sensor Safety Reversing Sensor 19 Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing door. The door must reverse on the floor, centered under the door. • Operate the door in the path of the operator. Complete Adjustment Steps 1 and 2 Programming the Limits...
3900PLD Manual - Page 23

...hums briefly, then won 't close the door manually. If this solves the problem, the single button control station is faulty (replace), or there is complete. 8. The door opens but not from the remote control: • Program the operator to match the remote control code. (Refer to be broken. See above. 23 HAVING A PROBLEM? (TROUBLESHOOTING) 1. The door may have electric power? Close the...
3900PLD Manual - Page 25

... wire), correct wiring polarity (black/white wires reversed), broken or disconnected wires, replace/attach as needed . • Disconnect all wires from back of the Indicator lights on door control. • Inspect door control/wires for the sensors. Installed Safety Reversing Sensor Your garage door operator is programmed with jumper wire. the motor unit does not operate = Motor unit hums...
3900PLD Manual - Page 26

.... 2. If the optional remote light is installed, the light will cause the door to operate your operator. If this device must accept any unwanted remote, first erase all codes: Press and hold the button on the hand-held remote control. To replace battery, use . 1. THERE ARE NO OTHER USER SERVICEABLE PARTS. To Add or Program a Hand-held Remote Control (Not Provided...
3900PLD Manual - Page 27

...set the number of your garage door operator. To Add, Program or Change a Keyless Entry PIN (Not Provided) NOTE: The optional Keyless Entry must be programmed...installed, the light will no longer open the door. Press the new 4-digit PIN you have chosen, then press Enter. Test by visitors or service people with a temporary 4-digit PIN. To set...learning the remote control. The door should move....
3900PLD Manual - Page 28

... Station (or hand-held remote control or keyless entry, if programmed). 3. Follow the instructions below to operate with the door operator. Press the "learn button" on . 28 It has learned the code and the light turns on light until LED comes ON. 2. Programming Remote Light (Not Provided) The garage door operator remote light will need to be programmed to program the light. 1.
3900PLD Manual - Page 29

... monitor Mounting bracket Safety sensor kit (receiving and sending eyes) with 3' (.9 m) 2-conductor bell wire attached KEY NO. 7 8 PART NO. 41A6388 41A5266-1 41A6298 114A3593 DESCRIPTION Collar with set screws (2) Safety sensor brackets (2) NOT SHOWN Installation hardware bag (includes hardware listed on page 5) Owner's manual Motor Unit Assembly Parts 2 1 6 5 3 4 KEY NO. 1 2 3 PART NO...
3900PLD Manual - Page 30

... from being manually opened once closed. 30 ACCESSORIES 41A5281 Extension Brackets: (Optional) For safety reversing sensor installation onto the wall or floor. 475LM 377LM Keyless Entry with an additional LiftMaster Security✚® remote. 41A6102 EverCharge™ StandBy Power System: Provides backup power to the model 3900 door operator. This temporary password can add...
3900PLD Manual - Page 32

... REPAIR PARTS Selling prices will be furnished on request or parts will be shipped at prevailing prices and you will be billed accordingly. WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: • PART NUMBER • PART NAME • MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP, INC. All Rights Reserved Country Club Road Tucson, Arizona 85706 SERVICE INFORMATION...

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We have the following 1 documents available for the LiftMaster 3900:
  • 3900PLD Manual
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