Maximum Run Timer (Mrt); Resetting Factory Defaults - Clearing Memory - Chamberlain GSD series Installation Manual

MAXIMUM RUN TIMER (MRT)

Feature: The operator can learn the time it takes to open or close
the door plus and an additional 10 seconds.
Benefit: If the operator does not meet its open or close limit
within the set time it will stop, limiting damage to the door and
operator.
To Program:
NOTE: The default setting for the MRT is 90 seconds. In the event
the application requires the MRT be manually learned for a longer
duration follow steps below.
1. Start with the door in the closed position.
2. Set the selector dial to PROG.
3. Press and release the MRT button on logic board.
4. Press the OPEN button and wait for the door to reach the full
open limit.
5. Once the door has reached the open position, programming is
complete.
6. Turn the selector dial to desired wiring type.
NOTE: To reset MRT only, turn the selector dial to PROG and
press and hold the MRT button until the MAS LED flashes rapidly.
RESETTING FACTORY DEFAULTS -
CLEARING MEMORY
To reset most of the user installed settings back to factory
defaults:
1. Turn the selector dial to DIAG.
2. Press and hold the STOP button for 5 seconds. The MAS LED
will flash momentarily when the factory defaults have been
restored.
3. Return the selector dial to the desired wiring type.
Factory Defaults:
a. Timer-To-Close = 0 seconds
b. The Mid Stop is deactivated
c. The Maintenance Alert System is deactivated
d. The Maximum Run Timer is set to 90 seconds
e. Car Dealer Mode is deactivated
f. The remote controls and MyQ
g. Remote control programming via the 3-button station
h. The LiftMaster Monitored Entrapment Protection (LMEP)
Device will be unprogrammed
NOTE: Life of Operator feature (Odometer/Cycle Counter) and
programmed remote controls are not cleared.
Programming
devices will still be learned.
®
Operation will vary
depending on wiring
type
Operation will vary
depending on wiring
type
25
SELECTOR DIAL
SELECTOR DIAL