Chamberlain K1A6424 User Manual

APPLICATION REQUIREMENTS:
Available to all limited duty commercial door operators using the Logic control board. Example model identifier: MT-5011-U.
NOTE: For B2 wiring mode, these boards require a monitored safety device installed.
1. Disconnect power to operator.
2. Remove all wires from the existing logic board:
• Unplug Factory Wiring Connector (P1).
• Field control wiring from terminal strip.
NOTE: Remember location of all wiring connections for
reinstallation.
3. Remove the logic board from the mounting posts (5).
4. Install the new logic board into the operator, making sure that
the logic board is correctly oriented. Press firmly until all of
the mounting posts are completely through the mounting
holes and secure the board with the plastic nuts (2).
5. Plug factory wiring connector into P1 connector on logic
board.
6. Reconnect all field wiring to the field wiring terminal strip.
7. Make sure the electrical box is clear of all debris and tools.
8. Reconnect power to the operator and verify operation. Refer to
page 2 to reprogram remote controls and settings as
necessary.
LOGIC CONTROL BOARD
LOGIC BOARD
REPLACEMENT KIT
K1A6424 (315MHZ)
K1A6424-1 (390MHZ)
INSTALLATION
To avoid SERIOUS personal INJURY or DEATH from
electrocution, DISCONNECT electrical power to operator
BEFORE proceeding.
1
TTC
DIAGNOSTIC
AUX
ANT
R
27
L5
TP1
C20
C9
C
2
9
R24
J2
C
21
J
4
K
2
LT
P1
C3
2
U
4
D
7
D
6
D
5
D
4
R2
5
U
1
C3
1
D14
C
1
8
014A1030
^^^^
D
9
LEARN
1 2 3 4 5 6 7
LMEP1 LMEP2
INTRLK
COM
STOP CLOSE OPEN
STOP CLOSE OPEN
^^
2
3
AUX ANT
Auxiliary
Antenna
Connection
Purple Wire Antenna
Diagnostic LED Field Wiring Terminal Factory Wiring Connector (P1)
Timer to Close
Button
Learn
Button
Stop
Button
Close
Button
Open
Button
For more information:
www.devancocanada.com
or call toll free at 855-931-3334

Chamberlain K1A6424 Specifications

General

Brand	Chamberlain
Model	K1A6424
Category	Garage Door Opener
Language	English

Summary

Installation Guide

Safety Warning for Installation

Disconnect electrical power to the operator before proceeding with installation to avoid serious injury or death.

Logic Board Installation Steps

Instructions for removing the old logic board and installing the new one, including wiring connections and securing the board.

Determine and Set Wiring Type Mode

Wiring Type Mode Descriptions

Details on C2 and B2 wiring modes, their requirements, and how to switch between them using the LEARN and CLOSE/STOP buttons.

Programming Remote Controls

Single Button Remote Programming

Steps to program single-button remotes by pressing the LEARN button and then the remote button until the diagnostic LED flashes.

3-Button Remote Programming

Procedure for programming 3-button remotes, selecting desired functions (OPEN, CLOSE, STOP) and pressing the remote button.

Erasing All Remote Controls

Method to erase all learned remote controls by pressing and holding the LEARN button until the diagnostic LED flashes rapidly.

Timer to Close (TTC) Function

Programming the Timer to Close

Steps to set the automatic door closing time by pressing the LEARN, TTC, and STOP buttons to adjust the delay.

Clearing the Timer to Close

Instructions to clear or reset the Timer to Close feature by pressing and holding the LEARN and TTC buttons.

Temporarily Disabling Timer to Close

How to temporarily disable the TTC feature by pressing the STOP button on the logic board or the 3-button control station.

How to Order Repair Parts

Required Information for Ordering

Details needed when ordering repair parts, including part number, description, and model number, from Devanco Canada.