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LiftMaster 3900 Support Question

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Question posted by ramckahan on October 4th, 2014

Trouble Shooting The 3900

I lost electricity for a day and pulled release to close door. How do I get it to unrelease. also now the unit does not work I push the opener button and all it does is hum for a second and stop. The yellow light is flashing on the unit.

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Answer #1: Posted by BusterDoogen on October 4th, 2014 12:37 PM

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Go to page 27 & see the power failure solutions.

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Related LiftMaster 3900 Manual Pages

3900PLD Manual - Page 1

... Model 3900PLD For Light Duty Commercial Use Install On Sectional Doors With Torsion Assemblies Only The Chamberlain Group, Inc. 845 Larch ... read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the door after installation. ■ The door WILL NOT CLOSE unless The Protector System® and cable tension monitor are connected and properly aligned. ■...

3900PLD Manual - Page 2

... Installation safety instructions 7 Position the operator 7 Attach the emergency release rope and handle 8 Install power door lock (Not Provided 8 Attach the cable tension monitor (Required 9 Install the single button control station 10 Install the light (Not Provided 11 Electrical requirements 12 Mount the Standby Power Unit (SPU) (Not Provided) . . . 13 Install The Protector System 14...

3900PLD Manual - Page 3

...unit Cable Tension Monitor Torsion Spring Drum Wall-mounted Single Access Door Button... • An electric outlet is required within... release...door no access door to the garage, as you proceed with the installation of your operator. If this type of movement is important that meets the requirements listed below apply to your requirements, there are several installation steps which may not work...

3900PLD Manual - Page 4

... there is out of balance, call for hand tools as shown. Sectional Door Tools needed During assembly, installation and adjustment of door. Release the door. Verify equal cable tension on each side of the operator, instructions will call a trained door systems technician. 3. Preparing your Door Before you begin: • Disable locks. • Remove any binding or...

3900PLD Manual - Page 8

... the end of the rope to disengage door ONLY when door is CLOSED. Fasten power door lock to secure wire in several places. 6. Use insulated staples to the outside of the garage door track with an overhand knot at least 1" (2.5 cm) from being manually opened once the door is fully closed. 1. Secure with hardware provided. 5. NOTE: If it is...

3900PLD Manual - Page 14

If an obstruction breaks the light beam while the door is closing, the door will flash 10 times. Either can be disabled. Be sure power is not connected to full open position, and the operator lights will stop and reverse to the door operator BEFORE installing the safety reversing sensor. If installing in masonry if repositioning is necessary. Safety Reversing...

3900PLD Manual - Page 16

...WHT/BLK WHT To Door Control Quick-Connect Terminals To insert or release wires, push in the receiving eye is off, dim, or flickering (and the invisible light beam path is not... indicator light will not close. NOTE: When the invisible beam path is obstructed or misaligned while the door is already open wire to brackets, with screwdriver tip. If the door is closing, the door will ...

3900PLD Manual - Page 17

... which the door will stop the door. Press and hold the purple button until the LED starts flashing slowly, then release (Figure 2). 2. This sets the UP (open) limit and begins closing door. • NEVER learn forces or limits when door is binding or sticking. Once the door is at desired DOWN position 17 Push the door control or programmed remote control. Push and hold...

3900PLD Manual - Page 18

... unit into the Force Adjustment Mode. If the door is not sticking or binding. Repair door first • Too much force on floor. The LED will stop flashing when the force has been programmed. Push the door control or programmed remote control again. Figure 1 LED Purple Button Black Button Figure 2 Push Purple button twice to be SERIOUSLY INJURED or KILLED by a closing door...

3900PLD Manual - Page 19

... repair to or adjustment of the door. • Press the remote control push button to close from a remote if the indicator light in the down direction. Complete Adjustment Steps 1 and 2 Programming the Limits and Forces. • Repeat the test. • When the door reverses on striking the obstruction. The door operator will flash. Upon successful safety reversal test...

3900PLD Manual - Page 20

...9 times. Test the emergency release: • Make sure the door is heard from the unit. The door should be opened manually. • Return the door to the closed position. • Pull the emergency handle a second time. • Reconnect the door to be fully closed . • Pull the emergency release handle. To reconnect the door to disengage door ONLY when door is clear of persons...

3900PLD Manual - Page 21

...could result in SEVERE INJURY or DEATH. 11. ALWAYS disconnect electric power to operate or play with door control push buttons or remote controls. 3. If open door falling rapidly and/or unexpectedly. 7. Weak or broken springs or unbalanced door could result in an open , the door will stop . 4. ALWAYS KEEP DOOR PROPERLY BALANCED (see page 3). WARNING OPERATION IMPORTANT SAFETY INSTRUCTIONS...

3900PLD Manual - Page 22

... Steps 1 and 2). • Repeat the safety reverse test. Once a Year • Oil door rollers, bearings and hinges. CARE OF YOUR OPERATOR MAINTENANCE SCHEDULE Once a Month • Manually operate door. The operator does not require additional lubrication. If it is unbalanced or binding, call a trained door systems technician. • Check to be sure door opens & closes fully.

3900PLD Manual - Page 23

... door control terminals and operate from the Single Button Control Station: • Are the wiring connections correct? See Installation Step 9. 10. The door opens and closes by its springs. The door doesn't open completely: • Is something obstructing the door? See Installation Step 9. • See Adjustment Step 2. HAVING A PROBLEM? (TROUBLESHOOTING) 1. Pull the emergency release...

3900PLD Manual - Page 24

... bar is not moving up to disconnect the door. Door loses limits. • Collar not tightened securely. If not, move the position of the mounting bracket. 24 When power is restored, pull manual release a second time. • If a Standby Power Unit is connected, the operator should be opened and closed manually. If it is excessive the collar...

3900PLD Manual - Page 25

... programmed with jumper wire. Installed Safety Reversing Sensor Your garage door operator is firmly secured to reset. 9 FLASHES Cable tension monitor reversal. the motor unit does not operate = Motor unit hums briefly; Unplug to wall and does not move. Wait 30 minutes and retry. Symptom: Door reverses while closing. • Check for a short (staple in wire), correct wiring...

3900PLD Manual - Page 26

...). Tested to Comply with only 3V2032 coin cell batteries. Release the button when the learn indicator light will glow steadily for up (+). Releasing the push button prior to the door closing will cause the door to reverse. If this occurs, the door can be programmed to work with your door operator, the large button is factory programmed to operate it. A maximum of eight...

3900PLD Manual - Page 27

... press and hold the ENTER button. 3. USING THE "LEARN" BUTTON 1. Within 30 seconds, enter a four digit personal identification number (PIN) of hours (up to operate your garage door operator. Press the new 4-digit PIN you have chosen, then press Enter. To set a temporary PIN: 1. Press and release the purple "learn indicator light blinks and shuts off...

3900PLD Manual - Page 28

... code and the light turns on light until LED comes ON. 2. Follow the instructions below to operate with the door operator. Press the "learn button" on . 28 Activate the door using the Single Button Control Station (or hand-held remote control or keyless entry, if programmed). 3. Programming Remote Light (Not Provided) The garage door operator remote light will need to...

3900PLD Manual - Page 30

... persons. Alternate Mounting Kit: This kit allows the operator to the model 3900 door operator. Power Door Lock: Enables the end user to operate door operator from outside by entering a password on a work light from their door operator remote or from being manually opened once closed. 30 ACCESSORIES 41A5281 Extension Brackets: (Optional) For safety reversing sensor installation onto...