The LiftMaster K41-0575-000 is a matched electronic board service kit for select LiftMaster TECHNA DC barrier gate operators. It includes the main control board and motor drive board used to manage operator programming, access-control inputs, safety-device monitoring, motor movement, battery charging, diagnostics, and communication between the major operator components.
LiftMaster service guidance specifies using K41-0575-000 when replacing either the TECHNA main control board or motor drive board. Both boards should be replaced together so their firmware versions remain compatible.
The kit is supplied as a matched service set. Do not replace only one board from the kit or combine a new board with an older board unless current LiftMaster service documentation specifically approves the firmware combination.
The main control board and motor drive board must use compatible firmware. TECHNA diagnostic code 32, VER MISMATCH, indicates that the boards have incompatible major firmware versions or that the motor drive board is not communicating correctly.
K41-0575-000 includes both boards so they can be replaced as a matched set. Do not substitute a separately sourced K41-0431-000 or K41-0434-000 board without confirming its firmware compatibility and current LiftMaster service requirements.
| Specification | Details |
|---|---|
| Brand | LiftMaster |
| Service Kit Part Number | K41-0575-000 |
| Product Type | Matched main control and motor drive board service kit |
| Main Control Board | K41-0431-000 |
| Motor Drive Board | K41-0434-000 |
| Operator Platform | LiftMaster TECHNA barrier gate operators |
| Compatible Model Families | Select PBG24DC, CBG24DC, and IBG24DC operators |
| Motor System | TECHNA 24V DC brushless motor drive platform |
| Firmware Requirement | Main and motor drive board firmware versions must be compatible |
| Replacement Procedure | Replace both boards at the same time |
| Programming Required | Operator configuration, limits, settings, and connected equipment must be checked after installation |
| Motor Included | No |
| Limit Encoder Included | No |
| Expansion Board Included | No |
| Wire Harnesses Included | Confirm package contents before ordering |
| Installation | Professional commercial gate service recommended |
| Part or Operator Family | Important Difference |
|---|---|
| K41-0431-000 Main Control Board | Individual main board number; current service guidance calls for the matched K41-0575-000 board set |
| K41-0434-000 Motor Drive Board | Individual drive board number; firmware must match the main control board |
| K1D8387-1CC Expansion Board | Optional input, relay, and loop-detector board rather than the main or motor drive board |
| K41-0072-000 Relay Adapter Board | Separate auxiliary relay assembly |
| Legacy BG, Mega Arm, and Mega Sprint Boards | Different operator platforms, wiring, firmware, inputs, motor controls, and mounting arrangements |
These symptoms do not automatically confirm that both boards have failed. Similar problems may be caused by low battery voltage, failed batteries, transformer or rectifier faults, damaged harnesses, poor grounding, a defective motor, encoder failure, incorrect product ID harness, water intrusion, accessory shorts, or mechanical binding.
Review the complete event log and follow current LiftMaster diagnostic procedures before replacing the boards. A code may identify a wiring, power, motor, encoder, or mechanical problem rather than a defective circuit board.
A replacement main control board may not contain the previous operator configuration. The technician should be prepared to verify or reprogram the product configuration, arm length, handing, limits, reversal force, speed, timer-to-close, power-fail behavior, LEDs, buzzer, paired-operator communication, network settings, remote controls, and accessory functions as applicable.
If the operator reports NO LIMITS or ID MISMATCH after board replacement, follow the current LiftMaster limit and product configuration procedures. Do not operate the barrier arm until its configuration and travel limits have been properly established.
Turn both the AC power switch and battery switch to the OFF position before opening or servicing the operator. Confirm that all power has been removed before disconnecting boards or wiring.
Label and photograph every connector before removing the original boards. Inspect each plug for bent pins, corrosion, overheated terminals, damaged insulation, or incorrect field wiring before connecting the replacement boards.
After installation, verify limits, arm balance, speed, force, battery charging, motor operation, event codes, access-control inputs, communication functions, and all required monitored entrapment-protection devices.
Do not bypass photo eyes, safety edges, vehicle detection, fire access, emergency access, warning devices, stop circuits, or other operator safety functions during testing.
A failed board may be the result of another problem. Water intrusion, reversed battery wiring, a shorted accessory, damaged motor wiring, failed encoder, incorrect grounding, excessive motor current, or a binding mechanical assembly can damage the replacement boards if the original cause is not corrected.
Internal TECHNA electrical service involves AC input power, battery current, sensitive electronic assemblies, moving mechanical components, and stored spring energy. Diagnosis and replacement should be completed by a qualified commercial gate technician familiar with LiftMaster TECHNA programming and safety requirements.
Local pickup in Hialeah Gardens, Florida may be available after current inventory and package contents are confirmed.
The kit is used with select TECHNA PBG24DCW, PBG24DCG, CBG24DCW, CBG24DCG, IBG24DCW, and IBG24DCG barrier gate operators. Confirm the current parts diagram before ordering.
The service kit includes the K41-0431-000 main control board and K41-0434-000 motor drive board.
Yes. LiftMaster service guidance specifies replacing both boards at the same time so the main control and motor drive board firmware versions remain compatible.
No. The motor, limit system encoder, gear reducer, wire harness kit, expansion board, relay adapter board, batteries, and other operator components are separate unless specifically stated in the package listing.
Code 32 indicates incompatible board firmware or a motor drive communication problem. Check board power, connections, harnesses, and reported firmware versions before replacing the matched board set.
Yes. The operator configuration, product ID, arm settings, limits, force, speed, timer, accessories, remote controls, and communication settings should be checked and programmed as required.
Check the event log, incoming power, batteries, charging circuit, grounding, board harnesses, motor, encoder, product ID harness, accessories, and mechanical operation before condemning the boards.
A qualified commercial gate technician should install and program the kit because service involves AC power, battery current, motor controls, firmware compatibility, limits, and monitored safety devices.