Factory setting is c2 board selector dial, Open mid stop programming, Timer-to-close programming – LiftMaster GH Heavy Industrial-Duty Gear-Reduced Hoist Operator User Manual
Page 2: Mas programming (maintenance alert system), Hold, E2 t ts fsts diag prog d1, Optn, Push and release to open, Push and release to stop push and, Follow all national and local electrical codes

LiftMaster Monitored Entrapment Protection (LMEP)
is required for most programmable settings.
Thru-Beam Photoelectric Sensors (Shown)
OPEN
CLOSE
STOP
Half the Height of the Door
NEVER run Control wiring
in same conduit as the
Power wiring!
Edge Sensor
Approximately 5 Feet
6" max
above the
floor
White/Black
White
Push and Release to Open
(without Mid Stop programming)
Push and Release to Stop
Push and
Hold
to Close
CONTROL WIRING
USE COPPER WIRE ONLY
E2
T
TS
FSTS
DIAG
PROG
D1
C2
B2
Factory Setting is C2
Board Selector Dial
TIMER
MID
MRT
TIMER
MID
MRT
E2
T
TS
FSTS
DIAG
PROG
D1
B2
C2
OPEN Mid Stop Programming
1. Close the Door.
6. Turn selector back to selected wiring type.
3. Press and release the MID button.
2. Turn selector to PROG.
OPEN
CLOSE
STOP
D20
D21
D13
11
11
9
8
20 AWG or Greater
24VAC
24VAC
Timer Defeat
Common
MAS
Maintenance Alert LED
LMEP
Edge
Open
Close
Stop
Common
SBC
14
1
2
3
4
5
6
7
8
9
10 11 12 13
7
6
5
4
4
4
10
The OPEN LED will flash once for every 1 sec.
The CLOSE LED will flash once for every 15 sec.
Timer-to-Close Programming
Timer automatically closes door after a preset time.
1. Close the Door.
5. Press and release the OPEN button once for every 1 second.
Press and release the CLOSE button once for every 15 seconds.
TIMER
MID
MRT
3. Press and release the TIMER button.
TIMER
MID
MRT
6. Press and release the TIMER button to complete programming.
2. Turn selector to PROG.
4. Press and release the STOP button to clear the timer.
OPEN
CLOSE
STOP
D20
D21
D13
Example:
Push CLOSE + Push OPEN + Push OPEN = 17 seconds total
(15 seconds) (1 second) (1 second)
OPEN
CLOSE
STOP
D20
D21
D13
© 2010, The Chamberlain Group Inc.
All Rights Reserved
01-35245
The mid stop feature is to open the door to a preset point prior to the fully open position.
E2
T
TS
FSTS
DIAG
PROG
D1
B2
C2
8. Turn the selector dial back
to the desired wiring type.
MAS Programming (Maintenance Alert System)
MAS
6. Press the OPEN button once for
every
5,000 Cycles increments.
Press
the
CLOSE button once for
every
3 Month increments.
Press
the
STOP button once to
Clear the MAS Setting.
OPEN
CLOSE
STOP
D20
D21
D13
2. Close the Door.
1. The MAS assists the installing dealer in setting
up a routine maintenance program. Once
programmed, the MAS notifies the end user
(with a flashing LED on the 3 button station)
when a preset number of cycles/months has
elapsed and scheduled maintenance is due.
4. Press and release the MAS button.
5. Press the STOP button once
to clear the MAS counter.
3. Turn the selector dial
to
PROG.
MAS
OPEN
CLOSE
STOP
D20
D21
D13
OPEN
CLOSE
STOP
D20
D21
D13
OPEN
CLOSE
STOP
D20
D21
D13
7. Turn selector to T, TS or FSTS wiring types.
Follow ALL national and local electrical codes
OPTN
OPTN
OPTN
E2
T
TS
FSTS
DIAG
PROG
D1
B2
C2
OPTN
E2
T
TS
FSTS
DIAG
PROG
D1
B2
C2
OPTN
E2
T
TS
FSTS
DIAG
PROG
D1
B2
C2
OPTN
E2
T
TS
FSTS
DIAG
PROG
D1
B2
C2
OPTN
7. Press the MAS button to
complete the programming.
The on board LED will flash back
the programmed settings. The
OPEN LED will flash once for every
5,000 cycles. The CLOSE LED will
flash once for every 3 months.
4. Press the OPEN button, wait until the door reaches the desired
mid stop height, then press and release the STOP button.
5. Press and release the MID button to complete programming.
NOTE: Must have at least one LiftMaster
Monitored Entrapment Protection (LMEP)
device installed.