Limit Setup Leds; Adjustment - Chamberlain LiftMaster LA412 Installation Manual

LIMIT AND FORCE ADJUSTMENT continued...
For dual gate applications the limits will have to be set for each
operator. The gate MUST be attached to the operator before setting the
limits and force.
INITIAL LIMITS AND FORCE ADJUSTMENT
If a mistake is made while programming the limits press the reset button
to start over.
1. Set the GATE switch to the 1 position.
2. Press and release the SET OPEN and SET CLOSE buttons
simultaneously to enter limit setting mode.
3. Press and hold the MOVE GATE buttons to move the gate to the open
or close limit.
4. Press and release the SET CLOSE or SET OPEN button depending on
which limit is being set.
5. Press and hold the MOVE GATE button to move the gate to the other
limit.
6. Press and release the SET CLOSE or SET OPEN button depending on
which limit is being set. The operator will exit limit setting mode.*
7. Cycle the gate open and close using the TEST BUTTONS. This
automatically sets the force.
8. For dual gates set the Gate switch to the 2 position and repeat steps
2-7.
When limits are set properly the operator will automatically exit limit
setting mode.
* Dual Gates ONLY: When the limits are set on the secondary gate first
the control board will not exit the limit setting mode until the limits are
set on the primary gate.

LIMIT SETUP LEDS

SET OPEN SET CLOSE OPERATOR MODE
LED LED
OFF OFF NORMAL MODE
BLINKING BLINKING LIMIT SETTING MODE
BLINKING ON LIMIT SETTING MODE
ON BLINKING LIMIT SETTING MODE
ON ON LIMIT SETTING MODE

ADJUSTMENT

1
E
E
EXPLANATION
Limits are set.
Limits are not set.
Open limit is not
set.
Close limit is not
set.
Limits are set.
27
2
OFF
TIMER
PRESS & TO CLOS
RELEASE
TO BEGIN SET OPEN SET CLOSE
(SECONDS)
LIMIT
10
SETUP
1
2
5
GATE
PRESS &
OFF
RELEASE
TO BEGIN
LIMIT
SETUP
SET OPEN SET CLOSE
PRESS &
RELEASE
TO BEGIN
LIMIT
SETUP
7
3
B
D
PRESS &
RELEASE
TO BEGIN
LIMIT
SETUP
MOVE
1
GATE
2
GATE
4
SET OPEN SET CLOSE
TI
PRESS & TO
RELEASE
TO BEGIN
(SE
LIMIT
SETUP
PRESS &
RELEASE
TO BEGIN
LIMIT 5
SETUP
MOVE
1
GATE
2
GATE
TI
6
TO
(SE