• Usually Ships 4 to 7 Business Days

Liftmaster 41A5021-1i Logic Board (41A5021-I)

This item is discontinued. Please view this replacement item:

MSRP: $127.59
(You save $11.60 )
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If your LiftMaster Chamberlain garage door opener system is not functioning correctly, it is not only an inconvenience; it is dangerous for you and your family. Many times, keypads, sensors and remotes can malfunction due to a faulty logic board. Fortunately, we carry an extensive selection of garage door opener circuit boards for every model of LiftMaster Chamberlain systems. If you own a malfunctioning LiftMaster 1200, 2200 or 4200 Deluxe Chain Drive system, replacing your LiftMaster 41A5021-1I logic board may be a simple and inexpensive solution. To ensure your system model is compatible with this specific circuit board, please review our Chamberlain LiftMaster Garage Door Opener Circuit Board Compatibility Chart. Replacing your circuit board is a simple process, and in most cases, there is no need for professional assistance. For detailed, step-by-step instructions on how to safely install your LiftMaster 41A5021-1I logic board, please see the Product Manual. Once you’ve replaced your logic board, it is important to test the Safety Reverse System to ensure your garage door opener is operating safely. • First, with the door fully open, place a one inch board (or 2X4) under the center of door.
• Close the door. It should immediately reverse directions when striking the board.
• If the door does not reverse, but only stops on the obstruction, increase the Down limit by turning the adjustment screw counterclockwise by a quarter turn.
• If door reverses after adjustment, remove the board and run the door in three to four full cycles to ensure your system’s adjustments are correct.
Many times, your circuit board becomes faulty due to power surges or lightning strikes. For this reason, we highly suggest using a 990LM Garage Door Opener Surge Protector with your replacement LiftMaster 41A5021-1I logic board. The surge protector will help safeguard your circuit board, ensuring your system continues to function correctly.