Circuit Board, K001A6837, Logic 4 Commercial Garage Door Opener, Liftmaster

LiftMaster K1A6837 Logic 4 Commercial Circuit Board – Universal Replacement for All HP/Voltage LiftMaster Operators

The LiftMaster K1A6837 Logic 4 Circuit Board is a direct replacement for all horsepower and voltage configurations of LiftMaster commercial door operators. Built to meet UL 325 safety standards, this circuit board supports a range of advanced programmable features tailored for commercial and industrial applications.

Replacing a faulty circuit board is a cost-effective way to restore full functionality to your garage door opener, particularly when experiencing issues with remote controls, keypads, safety sensors, or the safety reverse system.

For compatibility verification, reference your operator’s manual or consult the Chamberlain LiftMaster Circuit Board Compatibility Chart. This unit is also identified by part numbers K001A6837 and 012381356195.

Key Features

• Compatible with All HP and Voltage LiftMaster Commercial Operators

• UL 325 Compliant – Requires CPS-U photo eyes for momentary contact operation

• Highly Programmable for Commercial Use

Programmable Functions

• Maximum Run Timer – Prevents prolonged operation due to obstruction or malfunction

• Programmable Mid Stop – Allows partial opening for improved workflow

• Timer to Close – Automatically closes door after a set delay

• Maintenance Alert System (Optional)

  • Tracks operational cycles

  • Alerts when scheduled maintenance is due

• Car Dealer Mode – Specialized function for showroom or high-traffic environments

Maintenance Alert System (MAS)

The optional MAS feature is especially useful in commercial settings, enabling operators to pre-set a cycle limit that triggers a maintenance reminder. This helps maintain safety, efficiency, and long-term system reliability.

Additional Information

• Part Numbers:

  • K1A6837

  • K001A6837

  • 012381356195

• Installation:

  • Refer to your operator’s installation manual for proper programming and setup

  • Ensure compatibility with existing sensors and operator firmware