Chamberlain WLED User manual

LiftMaster
300 Windsor Drive
Oak Brook, IL 60523
SM
LED Wi-Fi®Garage Door Opener
Belt Drive Model WLED
• Please read this manual and the safety materials
carefully!
• The door WILL NOT CLOSE unless the Protector
System®is connected and properly aligned.
• Periodic checks of the garage door opener are
required to ensure safe operation.
• This garage door opener is ONLY compatible with
MyQ®and Security+ 2.0®accessories.
• DO NOT install on a one-piece door if using devices
or features providing unattended close. Unattended
devices and features are to be used ONLY with
sectional doors.
• Attach warning labels to the location indicated on
label.
FOR RESIDENTIAL USE ONLY
Register your garage door opener to receive
updates and offers from LiftMaster
Take a photo of the camera icon
including the points ( ).
Send it in by texting
the photo to 71403 (US)
or visit www.liftmaster.photo (Global)

2
Contents
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Install the Door Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Install the Protector System®. . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Battery Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42


0REPARATION
-Y13ERIAL .UMBER
7RITE DOWN THE FOLLOWING INFORMATION FOR FUTURE REFERENCE
MyQ®Serial Number:
Product S/N
Product S/N:
Date of Purchase:
/ /
MyQ®Serial Number
3AFETY 3YMBOL AND 3IGNAL 7ORD 2EVIEW
4HIS GARAGE DOOR OPENER HAS BEEN DESIGNED AND TESTED TO OFFER SAFE SERVICE PROVIDED IT IS
INSTALLED OPERATED MAINTAINED AND TESTED IN STRICT ACCORDANCE WITH THE INSTRUCTIONS AND
WARNINGS CONTAINED IN THIS MANUAL
7HEN YOU SEE THESE 3AFETY 3YMBOLS AND 3IGNAL 7ORDS ON THE FOLLOWING PAGES THEY WILL
ALERT YOU TO THE POSSIBILITY OF SERIOUS INJURY OR DEATH IF YOU DO NOT COMPLY WITH THE
WARNINGS THAT ACCOMPANY THEM 4HE HAZARD MAY COME FROM SOMETHING MECHANICAL OR
FROM ELECTRIC SHOCK 2EAD THE WARNINGS CAREFULLY
-ECHANICAL
%LECTRICAL
7HEN YOU SEE THIS 3IGNAL 7ORD ON THE FOLLOWING PAGES IT WILL ALERT YOU TO THE POSSIBILITY
OF DAMAGE TO YOUR GARAGE DOOR ANDOR THE GARAGE DOOR OPENER IF YOU DO NOT COMPLY WITH
THE CAUTIONARY STATEMENTS THAT ACCOMPANY IT 2EAD THEM CAREFULLY
7!2.).' 4HIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING LEAD WHICH
ARE KNOWN TO THE 3TATE OF #ALIFORNIA TO CAUSE CANCER OR BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM &OR MORE INFORMATION GO TO WWW07ARNINGSCAGOV
5NATTENDED /PERATION
4HE 4IMERTO#LOSE 44# FEATURE THE -Y13MARTPHONE #ONTROL APP AND -Y1'ARAGE
$OOR AND 'ATE -ONITOR ARE EXAMPLES OF UNATTENDED CLOSE AND ARE TO BE USED /.,9WITH
SECTIONAL DOORS !NY DEVICE OR FEATURE THAT ALLOWS THE DOOR TO CLOSE WITHOUT BEING IN THE
LINE OF SIGHT OF THE DOOR IS CONSIDERED UNATTENDED CLOSE 4HE 4IMERTO#LOSE 44#
FEATURE THE -Y13MARTPHONE #ONTROL AND ANY OTHER -Y1DEVICES ARE TO BE USED
/.,9 WITH SECTIONAL DOORS


0REPARATION
"EFORE 9OU #ONNECT WITH 9OUR 3MARTPHONE
-ONITOR AND CONTROL YOUR GARAGE DOOR FROM ANYWHERE USING THE -Y1APP
9OU WILL NEED
z7I&I ENABLED SMARTPHONE TABLET OR LAPTOP
z"ROADBAND )NTERNET #ONNECTION
z7I&I SIGNAL IN THE GARAGE  'HZ BGN REQUIRED
z0ASSWORD FOR YOUR HOME NETWORK ROUTERgS MAIN ACCOUNT NOT GUEST NETWORK
4EST THE 7I&I 3IGNAL 3TRENGTH
-AKE SURE YOUR MOBILE DEVICE IS CONNECTED TO YOUR 7I&I NETWORK (OLD YOUR MOBILE
DEVICE IN THE PLACE WHERE YOUR GARAGE DOOR OPENER WILL BE INSTALLED AND CHECKTHE7I&I
SIGNAL STRENGTH
Check Signal Strength. If you see:
Wi-Fi signal is strong.
The garage door opener will
connect to your Wi-Fi
network.
Wi-Fi signal is weak.
The garage door opener may connect
to your Wi-Fi network. If not, try one
of the options below to improve the
Wi-Fi signal:
No Wi-Fi signal.
The garage door opener will not be
able to connect to your Wi-Fi
network. Try one of the options
below to improve the Wi-Fi signal:
• Move your router closer to the garage
door opener to minimize interference from
walls and other objects
• Buy a Wi-Fi range extender
&OR COMPATIBLE ROUTER SPECIFICATIONS AND HELP VISIT 7I&I(ELP,IFT-ASTERCOM
3EE PAGE  TO CONNECT THE GARAGE DOOR OPENER TO A MOBILE DEVICE
#HECK THE $OOR
4O PREVENT POSSIBLE 3%2)/53).*529OR $%!4(
z!,7!93 CALL A TRAINED DOOR SYSTEMS TECHNICIAN IF GARAGE DOOR BINDS STICKS OR
IS OUT OF BALANCE !N UNBALANCED GARAGE DOOR MAY ./4 REVERSE WHEN
REQUIRED
z.%6%2 TRY TO LOOSEN MOVE OR ADJUST GARAGE DOOR DOOR SPRINGS CABLES
PULLEYS BRACKETS OR THEIR HARDWARE !,,OF WHICH ARE UNDER %842%-% TENSION
z$ISABLE !,,LOCKS AND REMOVE !,,ROPES CONNECTED TO GARAGE DOOR "%&/2%
INSTALLATION AND OPERATING GARAGE DOOR OPENER TO AVOID ENTANGLEMENT
z$/ ./4 INSTALL ON A ONEPIECE DOOR IF USING DEVICES OR FEATURES PROVIDING
UNATTENDED CLOSE 5NATTENDED DEVICES AND FEATURES ARE TO BE USED /.,9 WITH
SECTIONAL DOORS
4O PREVENT DAMAGE TO GARAGE DOOR AND OPENER
z!,7!93 DISABLE LOCKS "%&/2% INSTALLING AND OPERATING THE OPENER
z/.,9 OPERATE GARAGE DOOR OPENER AT 6 (Z TO AVOID MALFUNCTION AND
DAMAGE
"EFORE YOU BEGIN
 $ISABLE LOCKS AND REMOVE ANY ROPES CONNECTED TO THE GARAGE
DOOR
 ,IFT THE DOOR HALFWAY UP 2ELEASE THE DOOR )F BALANCED IT SHOULD
STAY IN PLACE SUPPORTED ENTIRELY BY ITS SPRINGS
 2AISE AND LOWER THE DOOR TO CHECK FOR BINDING OR STICKING )F
YOUR DOOR BINDS STICKS OR IS OUT OF BALANCE CALL A TRAINED DOOR
SYSTEMS TECHNICIAN
 #HECK THE SEAL ON THE BOTTOM OF THE DOOR !NY GAP BETWEEN THE
FLOOR AND THE BOTTOM OF THE DOOR MUST NOT EXCEED  INCH 
MM /THERWISE THE SAFETY REVERSAL SYSTEM MAY NOT WORK
PROPERLY
 4HE OPENER SHOULD BE INSTALLED ABOVE THE CENTER OF THE DOOR )F
THERE IS A TORSION SPRING OR CENTER BEARING PLATE IN THE WAY OF THE
HEADER BRACKET IT MAY BE INSTALLED WITHIN FEET  M TO THE
LEFT OR RIGHT OF THE DOOR CENTER 3EE PAGE 
Torsion
Spring
Extension
Spring
OR


0REPARATION
4OOLS .EEDED
3/16
5/32
5/16
7/16
1/2
5/8
9/16
1/4
7/16


0REPARATION
#ARTON )NVENTORY
!CCESSORIES WILL VARY DEPENDING ON THE GARAGE DOOR OPENER MODEL PURCHASED $EPENDING
ON YOUR SPECIFIC MODEL OTHER ACCESSORIES MAY BE INCLUDED WITH YOUR GARAGE DOOR
OPENER 4HE INSTRUCTIONS FOR THESE ACCESSORIES WILL BE ATTACHED TO THE ACCESSORY AND ARE
NOT INCLUDED IN THIS MANUAL 4HE IMAGES THROUGHOUT THIS MANUAL ARE FOR REFERENCE AND
YOUR PRODUCT MAY LOOK DIFFERENT
! (EADER BRACKET
" 0ULLEY AND BRACKET
# $OOR BRACKET
$ #URVED DOOR ARM
% 3TRAIGHT DOOR ARM
& 4ROLLEY
' %MERGENCY RELEASE ROPE AND HANDLE
( 2AIL
) 'ARAGE DOOR OPENER
* 3PROCKET COVER WITH HEX SCREWS
+ "ELT
, $OOR CONTROL 3MART #ONTROL 0ANEL,-7
- 7HITE AND REDWHITE WIRE
. 4HE 0ROTECTOR 3YSTEM
3AFETY REVERSING SENSORS WITH WHITE AND WHITEBLACK WIRE ATTACHED
3ENDING SENOR  RECEIVING SENSOR  AND SAFETY SENSOR BRACKETS 
/ 3AFETY LABELS AND LITERATURE
0 2AIL GREASE
1 "UTTON 2EMOTE #ONTROL -!8
)NSTALLATION
(EX "OLT Ñ X Ñ  ,OCK 7ASHER Ñ 
,AG 3CREW Ñ X Ñ  3ELF4HREADING 3CREW Ñ X Ñ 
#LEVIS 0IN Ñ X Ñ  2ING &ASTENER 
#LEVIS 0IN Ñ X Ñ  #ARRIAGE "OLT Ñ X Ñ 
#LEVIS 0IN Ñ X Ñ  7ING .UT Ñ 
.UT Ñ 
$OOR #ONTROL (ARDWARE
3CREW !" X Ñ  $RYWALL !NCHORS 
3CREW  X Ñ 
AB
C
J
N
I
OP
DE
F
H
GK
L
M
Not Provided
Not
Provided
Q


!SSEMBLY
 !TTACH THE 2AIL TO THE 'ARAGE $OOR /PENER
4O AVOID POSSIBLE 3%2)/53 ).*529 TO FINGER FROM MOVING GARAGE DOOR OPENER
z!,7!93 KEEP HAND CLEAR OF SPROCKET WHILE OPERATING OPENER
z3ECURELY ATTACH SPROCKET COVER "%&/2% OPERATING
4O AVOID 3%2)/53 DAMAGE TO GARAGE DOOR OPENER USE /.,9 THOSE BOLTSFASTENERS
MOUNTED IN THE TOP OF THE OPENER
./4% /.,9 USE THE BOLTS REMOVED FROM THE GARAGE DOOR OPENER 0LACE THE GARAGE DOOR
OPENER ON THE PACKING MATERIAL TO PREVENT SCRATCHING
 2EMOVE THE TWO BOLTS FROM THE TOP OF THE GARAGE DOOR OPENER
 !LIGN THE RAIL AND THE STYROFOAM OVER THE SPROCKET #UT THE TAPE FROM THE RAIL BELT
AND STYROFOAM
 &ASTEN THE RAIL WITH THE PREVIOUSLY REMOVED BOLTS
 0OSITION THE BELT AROUND THE GARAGE DOOR OPENER SPROCKET
 !TTACH THE SPROCKET COVER OVER THE GARAGE DOOR OPENER SPROCKET AND ATTACH WITH
HEX SCREWS
Model 8550W
Washered Bolt 5/16"-18x1/2"
(Mounted in the garage
door opener)
Hex Screw
#8x3/8"
(Packed with the
sprocket cover)
Washered Bolt
5/16"-18x1/2" Hex Screw
#8x3/8"
HARDWARE


!SSEMBLY
 4IGHTEN THE "ELT
 "Y HAND THREAD THE SPRING TROLLEY NUT ON THE THREADED SHAFT UNTIL IT IS FINGER TIGHT
AGAINST THE TROLLEY $O NOT USE ANY TOOLS
 )NSERT A FLATHEAD SCREWDRIVER TIP INTO ONE OF THE NUT RING SLOTS AND BRACE IT FIRMLY
AGAINST THE TROLLEY
 4IGHTEN THE SPRING TROLLEY NUT WITH AN ADJUSTABLE WRENCH OR A Ñ OPEN END
WRENCH ABOUT A QUARTER TURN UNTIL THE SPRING RELEASES AND SNAPS THE NUT RING
AGAINST THE TROLLEY 4HIS SETS THE SPRING TO OPTIMUM BELT TENSION
Spring Trolley Nut
(To motor unit)
Nut ring
slot
Nut Ring Nut Ring
AFTER RELEASE
1-1/4"
(3.18 cm)
BEFORE
1"
(2.5 cm)
1
2
3


)NSTALLATION
+/2146#06 +056#..#6+10 +05647%6+105
6Q TGFWEG VJG TKUM QH 5'8'4' +0,74; QT &'#6*
 2%!$ !.$ &/,,/7 !,, ).34!,,!4)/. 7!2.).'3 !.$ ).3425#4)/.3
 )NSTALL GARAGE DOOR OPENER /.,9 ON PROPERLY BALANCED AND LUBRICATED GARAGE
DOOR !N IMPROPERLY BALANCED DOOR MAY ./4 REVERSE WHEN REQUIRED AND COULD
RESULT IN 3%6%2% ).*529 OR $%!4(
 !,, REPAIRS TO CABLES SPRING ASSEMBLIES AND OTHER HARDWARE -534 BE MADE BY
A TRAINED DOOR SYSTEMS TECHNICIAN "%&/2% INSTALLING OPENER
 $ISABLE !,, LOCKS AND REMOVE !,, ROPES CONNECTED TO GARAGE DOOR "%&/2%
INSTALLING OPENER TO AVOID ENTANGLEMENT
 7HERE POSSIBLE INSTALL THE DOOR OPENER  FEET  M OR MORE ABOVE THE
FLOOR
 -OUNT THE EMERGENCY RELEASE WITHIN REACH BUT AT LEAST  FEET  M ABOVE
THE FLOOR AND AVOIDING CONTACT WITH VEHICLES TO AVOID ACCIDENTAL RELEASE
 .%6%2 CONNECT GARAGE DOOR OPENER TO POWER SOURCE UNTIL INSTRUCTED TO DO SO
 .%6%2 WEAR WATCHES RINGS OR LOOSE CLOTHING WHILE INSTALLING OR SERVICING
OPENER 4HEY COULD BE CAUGHT IN GARAGE DOOR OR OPENER MECHANISMS
 )NSTALL WALLMOUNTED GARAGE DOOR CONTROL
zWITHIN SIGHT OF THE GARAGE DOOR
zOUT OF REACH OF SMALL CHILDREN AT A MINIMUM HEIGHT OF FEET M
ABOVE FLOORS LANDINGS STEPS OR ANY OTHER ADJACENT WALKING SURFACE
zAWAY FROM !,, MOVING PARTS OF THE DOOR
 0LACE ENTRAPMENT WARNING LABEL ON WALL NEXT TO GARAGE DOOR CONTROL
 0LACE EMERGENCY RELEASESAFETY REVERSE TEST LABEL IN PLAIN VIEW ON INSIDE OF
GARAGE DOOR
 5PON COMPLETION OF INSTALLATION TEST SAFETY REVERSAL SYSTEM $OOR -534
REVERSE ON CONTACT WITH A Ñ CM HIGH OBJECT OR A X LAID FLAT ON THE
FLOOR
 4O AVOID 3%2)/53 0%23/.!, ).*529 OR $%!4( FROM ELECTROCUTION
DISCONNECT !,, ELECTRIC AND BATTERY POWER "%&/2% PERFORMING !.9 SERVICE OR
MAINTENANCE
 $/ ./4 INSTALL ON A ONEPIECE DOOR IF USING DEVICES OR FEATURES PROVIDING
UNATTENDED CLOSE 5NATTENDED DEVICES AND FEATURES ARE TO BE USED /.,9 WITH
SECTIONAL DOORS


)NSTALLATION
 $ETERMINE THE (EADER "RACKET ,OCATION
4O PREVENT POSSIBLE 3%2)/53 ).*529 OR $%!4(
z(EADER BRACKET -534 BE 2)')$,9 FASTENED TO STRUCTURAL SUPPORT ON HEADER
WALL OR CEILING OTHERWISE GARAGE DOOR MIGHT ./4 REVERSE WHEN REQUIRED $/
./4 INSTALL HEADER BRACKET OVER DRYWALL
z#ONCRETE ANCHORS -534 BE USED IF MOUNTING HEADER BRACKET OR X INTO
MASONRY
z.%6%2 TRY TO LOOSEN MOVE OR ADJUST GARAGE DOOR SPRINGS CABLES PULLEYS
BRACKETS OR THEIR HARDWARE !,, OF WHICH ARE UNDER %842%-% TENSION
z!,7!93 CALL A TRAINED DOOR SYSTEMS TECHNICIAN IF GARAGE DOOR BINDS STICKS OR
IS OUT OF BALANCE !N UNBALANCED GARAGE DOOR MIGHT ./4 REVERSE WHEN
REQUIRED
z$/ ./4 ENABLE THE 4IMERTO#LOSE FUNCTIONALITY IF OPERATING EITHER ONEPIECE OR
SWINGING GARAGE DOORS 4O BE ENABLED /.,9 WHEN OPERATING A SECTIONAL DOOR
#LOSE THE DOOR AND MARK THE INSIDE VERTICAL CENTERLINE OF THE GARAGE DOOR
%XTEND THE LINE ONTO THE HEADER WALL ABOVE THE DOOR 9OU CAN FASTEN THE HEADER BRACKET
WITHIN  FEET  M OF THE LEFT OR RIGHT OF THE DOOR CENTER ONLY IF A TORSION SPRING OR
CENTER BEARING PLATE IS IN THE WAY OR YOU CAN ATTACH IT TO THE CEILING WHEN CLEARANCE IS
MINIMAL )T MAY BE MOUNTED ON THE WALL UPSIDE DOWN IF NECESSARY TO GAIN APPROXIMATELY
Ñ  CM )F YOU NEED TO INSTALL THE HEADER BRACKET ON A X ON WALL OR CEILING USE LAG
SCREWS NOT PROVIDED TO SECURELY FASTEN THE X TO STRUCTURAL SUPPORTS
/PEN YOUR DOOR TO THE HIGHEST POINT OF TRAVEL AS SHOWN $RAW AN INTERSECTING HORIZONTAL
LINE ON THE HEADER WALL Ñ  CM ABOVE THE HIGH POINT 4HIS HEIGHT WILL PROVIDE TRAVEL
CLEARANCE FOR THE TOP EDGE OF THE DOOR
./4% )F THE TOTAL NUMBER OF INCHES EXCEEDS THE HEIGHT AVAILABLE IN YOUR GARAGE USE THE
MAXIMUM HEIGHT POSSIBLE OR REFER TO PAGE  FOR CEILING INSTALLATION
Header Wall
Unfinished
Ceiling
Vertical Centerline
of Garage Door
2x4
2x4
Structural
Supports
Level
(Optional)
OPTIONAL
CEILING
MOUNT FOR
HEADER
BRACKET
Sectional door with curved track
Header Wall
Track
2" (5 cm)
Highest Point
of Travel
Door