LiftMaster MT Support Question
LiftMaster MT Support Question
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Question posted by grindle1302 on December 28th, 2013
My Liftmaster Mt-1211 Will Not Close.
My Mt 1211 will not close. When I pres the close button the system will move approximately one foot, stop and return to the full open position. Please assist.
Current Answers
Answer #1: Posted by TommyKervz on December 28th, 2013 11:14 PM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,803
Member since:
January 10th, 2013 Points: 17,776,803
Greetings.
Why do the lights on my garage door opener flash and my door will not close?
The garage door opener is equipped with two safety features that may prevent the door from closing and cause the lights to flash.
The Lock Button on the Wall Control
The lock button on the wall control may be activated. Press the button to turn this feature off. The light bulb will blink two times. This feature is designed to prompt you that the lock button is activated. When the lock button is ON the garage door opener will work from the wall control but the remote controls are locked out.
The Safety Reversing Sensors
The most common reason for the lights to flash on the garage door opener and the door not closing is that the safety reversing sensors are misaligned or obstructed; this is a safety feature of the garage door opener.
When properly connected and aligned, the sensor will detect an obstacle in the path of its electronic beam. If an obstruction breaks the light beam while the door is closing, the door will stop and reverse to full open position, and the opener lights will flash 10 times.
Your garage door opener has a Self-Diagnostic feature. The LED next to the learn button will flash a number of times, and then pause signifying the potential issue.
One (1) flash indicates the sensor wire is shorted. See How do I test or troubleshoot the safety sensor wires?
Two (2) flashes indicate an open, broken, disconnected sensor wire, or the safety sensors are NOT installed. Consult your manual for sensor installation instructions or see How do I test or troubleshoot the safety sensor wires?
Four (4) flashes indicate the sensors are slightly misaligned. See How do I align my safety reversing sensors?
NOTE: The garage door can be closed by pressing and holding the Door Control push bar until down travel is completed.
Related LiftMaster MT Manual Pages
MT5011E Installation Manual - Page 1
INSTALLATION MANUAL
MODEL MT5011E/BMT5011E
MEDIUM DUTY DOOR OPERATOR
RaNdoBiwuoiRlwteiitcnheiver
INTENDED FOR PROFESSIONAL INSTALLATION ONLY
Visit www.LiftMaster.com to locate a professional installing dealer in your area.
2 YEAR WARRANTY
Serial # (located on electrical box)
Installation Date
Radio Receiver Built on Board
315MHz
NOT FOR RESIDENTIAL USE
A SAFETY DEVICE IS HIGHLY RECOMMENDED.
MT5011E Installation Manual - Page 3
... includes a number of features that will provide years of the operator is shipped from the factory in the door's path and automatically reverse a closing door.
Refer to automatically close after a preset time (only available with B2 wiring and a monitored safety device).
• Wiring Types: The functionality of reliable and safe operation. Features:
• Supports...
MT5011E Installation Manual - Page 4
...C2 Standard B2 configurable (see Basic
Programming section) CONTROL WIRING 16-22 AWG
MECHANICAL
DOOR SPEED 12" (30.48 cm) / second OUTPUT FORCE 125 ft. BRAKE (... ENTRAPMENT PROTECTION: . . . . Supports both monitored and non-monitored safety devices including LiftMaster CPS photo-eyes and industry standard sensing edges. ENVIRONMENTAL
LOCATION Indoor, dry location OPERATING TEMPERATURE 4˚ ...
MT5011E Installation Manual - Page 5
..., be 14'. CARTON INVENTORY
Before beginning your installation check that all components were provided.
15 1
14
^
^OPEN
CLOSE
O
STOP
8
4
10 9
7
2 12
3
13 11
6 5
ITEM DESCRIPTION
QTY
1
Operator
1
2
Track (left & right)
Door height plus 2'
2
3
Track Spacers
2
4
Front Idler
1
5
Trolley
1
6
Take-up Bolt
1
7
Chain
1
8
Master Links
2
9
Header Bracket
1
10...
MT5011E Installation Manual - Page 11
... using appropriate fasteners and locking hardware that will support the weight of the garage. Concrete anchors MUST be used if installing ANY brackets into masonry.
Lock
Nut
Washer
Bolt (Not Provided)
Bolt (Not Provided)
7 Attach door arm to trolley and door
AVERTISSEMENT
Bolt
Nut
(Not Provided)
ATTENTION Lock Washer
Nut
Lock Washer
Flange...
MT5011E Installation Manual - Page 13
... station. Reversing devices are recommended for 3-button control station
Remove cover
^OPEN Screws
CLOSE
O
STOP
Wall
Secure using appropriate hardware
5' (1.5 m)
3-Button Control Station
CAUTION
To prevent possible SEVERE INJURY or DEATH, install reversing sensors when: • The radio is used. • The 3-button control station is out of sight of the door. • Or ANY other control...
MT5011E Installation Manual - Page 14
... on the outside of the electrical box.
Depress retaining plate
Adjust OPEN limit
Retaining Plate OPEN Limit Nut OPEN Limit Switch CLOSE Limit Nut
AVERTISSEMENCLTOSE Limit Switch
ATTENTION
Increase Door Travel
Adjust CLOSE limit
Increase Door Travel Decrease Door Travel
AVERTISSEMENT
AVERTISSEMENT Decrease Door Travel
SAFETY Limit Switch
NOTE: When retaining plate is released, verify...
MT5011E Installation Manual - Page 15
... door it is closing , the door will stop and typically reverse to permit smooth operation. • Secure clutch nut with an obstruction while the door is recommended that a safety device (sensing edge or photo eyes) be installed.
See Optional Safety Device Configurations for wiring information.
15 Remove Tape Holding Cotter Pin to the full open position. The...
MT5011E Installation Manual - Page 16
...-Eyes with 4-wire sensing edge
(White/Black)
4-wire electric sensing edge
(White)
TTC
^^^^
1
LEARN STOP CLOSE OPEN LEDD14
2
3
4
LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
5
6
7
AUX ANT
AUX ANT
TTC
^^^^
1
LEARN STOP CLOSE OPEN LEDD14
2
3
4
LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
2-Wire electric or pneumatic sensing edge 2-wire electric or pneumatic sensing edge
(White/Black...
MT5011E Installation Manual - Page 17
...AANUT X ANT
^^^^
7
TTC
LEARN STOP CLOSE OPEN
LEDD14
1
2
3
4
5
6
7
LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
8
9
10
ITEM 1 2 3 4
5 6 7
8
9 10
DESCRIPTION Open Button Close Button Stop Button Learn Button
Timer to Close Button Purple Wire Antenna Auxiliary Antenna Connection
LED
Field Wiring Terminal Factory Wiring Connector
FUNCTION Open Door Close Door Stop Door Programs the remote...
MT5011E Installation Manual - Page 18
... Board
Photo Eye
TO PROGRAM Press and hold the LEARN and STOP buttons until the LED goes out (approximately 3 seconds). The operator will continue to close to close .
• Open override that reverses when closing by any monitored safety devices. The operator will go into a Restricted Close mode**. MONITORED SAFETY DEVICE
ADVERTENCIA PRECAUCIÓN
Sensing Edge
RESET TO...
MT5011E Installation Manual - Page 19
... mode. D B2 WIRING TYPE WITH MONITORED SAFETY DEVICE
• Momentary contact to open , close and stop . • Open override that reverses when closing by any opening
device. • Wiring for safety device to reverse. Press and hold the LEARN and CLOSE buttons until the LED goes out (approximately 3 seconds). BASIC PROGRAMMING
B2 WIRING TYPE WITHOUT MONITORED SAFETY DEVICE
C Requires...
MT5011E Installation Manual - Page 20
... J2
L5 ^^^^
R27
TTC 1
C18
D14
LEARN STOP CLOSE OPEN
LED
2
3
4
5
6
7
K2 LT
C29 R24 P1
D9
LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
LEARN STOP CLOSE OPEN LEDD14
1
2
3
45
67
MEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
NOTICE: To comply with door in the operator.
The LED will be erased. Press and release the TTC button a second time. 4. Press and release the LEARN...
MT5011E Installation Manual - Page 21
... to allow arm to fully close. 5. Press STOP button. (The door should close to fully close. Press OPEN button. (The door should stop .)
3. Open the door. 2. Remove the obstruction. 5. TEST REMOTE CONTROL * Requires B2 wiring type and compatible LiftMaster remote
control. Weak or broken springs or unbalanced door could result in the close direction.)
4. Release handle. Allow...
MT5011E Installation Manual - Page 22
... qualified LiftMaster remote control...OPEN and CLOSE button wiring THE WRONG DIRECTION connection reversed
DOOR DRIFTS AFTER OPERATOR STOPS
A) Door not balanced properly
➤ Verify brake assembly operation and wiring. ➤ Disconnect trolley and check door for proper operation. ➤ Check 3-button control wiring.
➤ Disconnect trolley assembly and check door for assistance...
MT5011E Installation Manual - Page 23
...assistance. Check clutch adjustment. Call Technical Support for the logic board LED to flash 7 times when power is applied or cycled to install external door interlock. Brown** Brown**
Orange Purple
Yellow
Grey
Safety Limit Switch
Open Limit Switch
Grey
Close Limit Switch
23
AANTUX ANT
J2
TTC
LEARN STOP CLOSE OPEN LED
1
2
3
4
5
6
7
LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
OPEN...
MT5011E Installation Manual - Page 27
... 65-8202
Commercial Protector SystePmRE®SS:
TO
OPEN
Provides protection on doors up
to 30' wide. Key Control Station:...CLOSE CLOSE
O
STOP
02-109
OPEN
CLOSE
3-Button Control Station: Steel enclosure.
CPS-LN4
Commercial Protector System®:
R ING
OPEN
Provides protection on doorsRuINpG
to 45' wide. OPEN
373LM
333LM
OPEN
WPB1LM
WPB3LM
WKP5LM
123 456 789
* 0#
3-Button...
MT5011E Installation Manual - Page 28
... and operation
with the Commercial Door Operator.
3 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER AND STOP BUTTON
STANDARD 7635
2 OR MORE 7635
KEY LOCKOUT 7635
Open Close Stop
Open Close Stop
Open Close Stop
Open
Close Stop
Keyswitch
2 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER
STANDARD 763
763
2 OR MORE
Open Close
C2 MODE ONLY
See note...
MT5011E QuickStart Guide Manual - Page 1
... ALL local electrical codes
OPEN CLOSE STOP INTRLK COM LMEP2 LMEP1
Timer to Close Programming
Timer to Close feature enables the operator to close the door after a preset time, adjustable from 5 to close from the
TTC
open cycle. Timer to Close (TTC)
Timer To Close Button
Timer to Close feature enables the operator to 60 seconds.
Requires LiftMaster monitored safety device. Press...
MT5011E QuickStart Guide Manual - Page 2
...MT/BMT door operator
IMPORTANT: This QuickStart is intended to the operator terminal block. Connect the arm assembly to open side of the Door
Door... slip if the door is obstructed. These instructions are positioned between the limit ...-point. Visit www.LiftMaster.com to stop the door by hand during travel. OPEN CLOSE STOP
Arm Assembly
Pivot Bolt
1
Approximately 4 Feet Half the...
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