LiftMaster 3800 Support Question
LiftMaster 3800 Support Question
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Question posted by docwola on April 30th, 2014
Liftmaster 3800 Motor Hums Does Not Lift Door
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Related LiftMaster 3800 Manual Pages
3800 Manual - Page 1
®
GARAGE DOOR OPENER Model 3800
For Residential Sectional Doors With Torsion Assemblies Only
Com Details
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com
patible with
See Page 13 for
Owner's Manual
■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation...
3800 Manual - Page 2
... work light or additional work light . . . . . .28
Repair Parts
29-30
Installation parts 29 Motor unit assembly parts 30
Accessories
31
Repair Parts and Service
32
Warranty
32
INTRODUCTION
Safety Symbol Review and Signal Word Review
This garage door opener has been designed and tested to offer safe service provided it . Read them .
WARNING...
3800 Manual - Page 4
... of door.
Lift the door about halfway as illustrated below. Release the door. Verify equal cable tension on each side of balance.
An unbalanced garage door may not reverse when required. • NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, ALL of the door. CAUTION
To prevent damage to garage door and opener: •...
3800 Manual - Page 5
If anything is packaged in one carton which contains the motor unit and the parts illustrated below. Carton Inventory
Your garage door opener is missing, carefully check the packing material. Note that accessories will depend on the model
purchased. LOCK
LIGHT
LCD Motion Detecting Door Control Console
Remote Control Visor Clip
SECURITY✚® 3-Button Remote...
3800 Manual - Page 6
...or the right side of collar screws equally to secure collar to the motor unit (12-14 ft./lbs.
The door may not reverse
correctly or limits may be facing up (accessible when ...set screws until instructed. ASSEMBLY STEP 1
Attach the Collar to the Motor Unit
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
• Loosen the collar screws.
...
3800 Manual - Page 7
... being entangled in SEVERE INJURY or DEATH.
3. of SEVERE INJURY or DEATH:
1.
Close the garage door completely. 2. Tighten all mounting bracket hardware. Use a staple to secure the antenna wire to garage door control.
10. Motor unit
Staple
Torsion Bar
7 Install garage door opener ONLY on inside of balance. NEVER wear watches, rings or loose clothing while installing or...
3800 Manual - Page 9
...cable on the same side of the door as the opener. Use insulated staples to motor unit. The cable tension monitor must be mounted on the opposite side of door. NOTE: There must have tension ...in place and reassemble it can be connected and properly installed before the garage door opener will reverse the door when excessive slack is no obstructions in the installation area that may ...
3800 Manual - Page 10
... console on the motor unit: white to white and white/red to avoid cracking plastic housing. For pre-wired installations (as follows:
• Install bottom screw, allowing 1/8" (3 mm) to protrude above wall surface.
• Position bottom of insulation from one 398LM can be connected to operate the same garage door opener, it is slower...
3800 Manual - Page 12
... wiring is required by your garage door opener has a grounding type plug with moving parts.
• Reinstall the cover.
Be sure the opener is not connected to the opener, and disconnect power to circuit... is grounded.
Reinstall opener to torsion bar.
• Run wires through the 7/8" hole in contact with a third grounding pin. To reduce the risk of the motor unit (according to ...
3800 Manual - Page 14
... brackets are available if needed.
WARNING
Be sure power is closing , the door will stop and reverse to the garage door opener
CAUTION BEFORE installing the safety reversing sensor. above garage floor.
No part of the garage door (door tracks, springs, hinges, rollers or other across the door, no more than 6" (15 cm) above floor
Invisible Light Beam Protection...
3800 Manual - Page 17
... the desired DOWN (closed) position (Figure 4).
6. This sets the UP (open ) position (Figure 2). See Troubleshooting section.
4. Setting the DOWN position: Push and hold until the door reaches the desired UP (open ) limit and begins closing garage door. • NEVER learn forces or limits when door is closed position.
7. This sets the DOWN (close ).
1. WARNING
CAUTION
To...
3800 Manual - Page 19
...; Any repair to or adjustment of the door. • Press the remote control push button to Adjustment Step 4. 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 opener. The door must reverse on striking the obstruction.
Safety...
3800 Manual - Page 21
... assemblies and other hardware, ALL of children.
Using Your Garage Door Opener
Your LiftMaster Security✚® opener and hand-held remote control have been factory programmed to disengage door ONLY when garage door is clear of persons and obstructions.
8. Your opener will reverse. See Programming. When the opener is complete. If closed . However, you release them until...
3800 Manual - Page 23
... is unbalanced or binding,
call a trained door systems technician. • Check to be sure door opens & closes fully. The door may be frozen to a metal door, foil backed insulation, or metal garage siding.
23 Adjust
limits and/or force if necessary (see Adjustment Step 3).
Tested to instructions on the motor unit panel.) Repeat with FCC Standards FOR...
3800 Manual - Page 24
... strains to disconnect the door. Operate the door manually. Open and close :
• Check cable tension monitor.
• If the opener lights blink, check the safety reversing sensor. The door opens but won 't work:
• The garage door springs may be opened and closed manually. The garage door opens and closes by its springs. The opener motor hums briefly, then won 't close...
3800 Manual - Page 25
...garage door opener... clean lens and secure brackets. • Verify door track is overheated. the motor unit does not operate or trolley is programmed with...Motor overheated or possible RPM sensor failure. If motor unit activates, replace door control wires. Wait 30 minutes and retry. "Learn" Button LED or Diagnostic LED
"Learn" Button
Diagnostic Chart
1 FLASH
Safety reversing sensors wire open...
3800 Manual - Page 26
... and hold the "learn indicator light will be programmed to operate other Security✚® garage door openers.
26 LOCK
LOCK LIGHTLIGHT
1. When the motor unit lights blink, it . Reprogram each remote or keyless entry you wish to operate your opener to operate your hand-held Remote Control
USING THE "LEARN" BUTTON
TO ADD ADDITIONAL...
3800 Manual - Page 27
... lights blink, it has expired. It can be closed by pressing the four buttons for your garage door opener. If the temporary PIN was set a temporary PIN:
1. Press the Prog button on motor unit. Press the four buttons for the present PIN, then press and hold buttons 1 and 9 for 30 seconds.
2.
To set to...
3800 Manual - Page 31
... and turn on a work light from their car with their garage door opener remote or from anywhere in their home with an additional LiftMaster Security✚® remote.
378LM
Wireless Door Control:
Push bar, light feature and auxiliary button.
Monitors up to three garage doors. Combine up to 4 garage doors by entering a password on or off from outside radio...
3800 Manual - Page 32
Country Club Road
Tucson, Arizona 85706
SERVICE INFORMATION TOLL FREE NUMBER:
1-800-528-9131
LIFTMASTER® GARAGE DOOR OPENER FIVE-YEAR LIMITED WARRANTY LIFETIME MOTOR LIMITED WARRANTY
The Chamberlain Group, Inc. ("Seller") warrants to the first retail purchaser of this product, for warranty repair, which upon receipt by Seller are ...
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