LiftMaster Q400E-1 Elite Omni Control Board
The LiftMaster Q400E-1 is an Elite Omni main control board for select older LiftMaster / Elite gate operator systems. It is the logic center that manages open and close commands, limit input, entrapment protection inputs, accessory connections, loop detector functions, and operator behavior. Q400E-1 is most commonly tied to Omni-style SL3000 and CSW200 applications, and some references include HCT Series operator use depending on the exact board and retrofit arrangement. Because many Omni operators in the field have been upgraded, repaired, or modified over time, the board number alone should not be the only check. A correct repair should consider the original Q019/Q400 board history, reset-button style, surge protector requirements, harness layout, and safety device wiring before installation.
Compatible With
- LiftMaster / Elite SL3000 operators using Omni-style electronics
- LiftMaster / Elite CSW200 operators using Omni-style electronics
- Select HCT Series Omni applications where the parts diagram supports Q400E-1
- Older Q019-style systems when using the correct approved upgrade path
- Elite Series residential and commercial gate operators with matching Omni board configuration
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Control board |
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| Part Number | Q400E-1 |
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| Control Platform | Elite Omni |
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| Application | Main gate operator control logic |
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| Compatible Operator Type | Select Elite / LiftMaster gate operators |
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| Common Model Families | SL3000, CSW200, select HCT applications |
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| Notes | Board revision, reset-button style, and surge protection must be verified |
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Also Known As / Related Part Numbers
- Q400E-1
- Q400E
- Q400
- LiftMaster Q400E-1
- Elite Omni control board
- Omni control board
- OMNI board
- Related to OMNIUP upgrade kit
- Related to Q019 replacement applications
- Related to Q410 surge protector when supplied as an upgrade kit
Technician Note
Before replacing an Omni board, photograph all wiring and label accessory connections. Many field issues blamed on a board are actually caused by shorted loop wiring, damaged safety inputs, stuck relays, or incorrect reset/surge wiring.
Before Ordering Checklist
- Match the original board number and revision.
- Confirm whether the job requires a board only or the OMNIUP upgrade kit.
- Check SL3000, CSW200, or HCT operator generation and wiring diagram.
- Inspect surge protector, loop detector, receiver, and accessory wiring.
- Verify monitored safety inputs and limits after installation.
Professional Advisory
Control board replacement should be performed by a qualified gate technician. Do not bypass entrapment protection devices, loop inputs, or reset circuits to make a board operate.
Important Ordering Warnings
- Do not assume Q400E-1 fits every Elite operator.
- Do not replace a Q019 board without confirming the approved retrofit path.
- Do not move wires one-by-one without documenting the original board connections.
Product Questions and Answers
What operator families are commonly associated with Q400E-1?
Q400E-1 is commonly associated with LiftMaster Elite Omni control applications such as SL3000 and CSW200, with some references also tying it to HCT-style Omni systems.
Is Q400E-1 the same as the OMNIUP kit?
No. Q400E-1 is the Omni control board, while OMNIUP is an upgrade kit that may include the Q400E board and surge protection components.
Can this board replace an older Q019 board?
In some older Omni applications, Q019 replacement is handled through an upgrade kit. Confirm the correct kit and wiring requirements before ordering.
Will accessories need to be reconnected or reprogrammed?
Yes. Accessory wiring, loop inputs, radio receivers, limits, and settings may need to be verified after board replacement.
Should a technician install this board?
Yes. Control board replacement involves operator power, accessory wiring, safety inputs, and setup checks that should be handled by a qualified gate technician.
