LiftMaster CSW24UL Manuals & Support

The LiftMaster CSW24UL is a 24 VDC pad-mount swing gate operator for commercial and high-traffic gates. It runs on 115 VAC or 240 VAC and keeps two 7 Ah batteries charged for backup.

It has a Security+ 2.0 receiver, MyQ, a main board and an expansion board with monitored entrapment inputs. Two operators can run as a pair over a wired or wireless dual-gate link.

Identify your model

The model number is on the label inside the cover. A CSW24UL has a main control board (K1D8389-1CC), an expansion board (K1D8387-1CC), a Security+ 2.0 receiver and an LED diagnostic display.

Older CSW24U and CSW24V operators use different control boards and some different covers. Check the model number on the label before you order boards, covers or harnesses.

Key specs

UL 325 usage class	Class I, II, III and IV
Main power	115 VAC, 4 A (10 A with accessory outlets) or 240 VAC, 2 A
Other input voltages	208/240/480/575 VAC, 1-phase, with the 3PHCONV transformer kit
Operating voltage	24 VDC, transformer run with battery backup
Max gate	1,600 lb up to 8 ft; 800 lb at 16 ft; 600 lb at 18 ft
90 degree travel time	About 20 seconds, depending on mounting
Max travel	115 degrees
Duty cycle	Continuous
Batteries	Two 12 V, 7 Ah included; two 33 Ah optional
Battery standby	Up to 146 cycles or 24 days on 7 Ah batteries
Accessory power	24 VDC, 500 mA max
Solar	24 VDC, 60 W max
Entrapment inputs	Main board: 2 close and 1 open. Expansion board: 3 more, plus up to 4 wireless edges with LMWEKITU
Operating temperature	-4 to 140 °F; down to -40 °F with the HTR heater
Operator weight	206 lb

Manuals and documents

Installation Manual

CSW24UL Installation Manual
01-39380B, 2018 · 56 pages View PDF: CSW24UL Installation Manual (opens in a new tab)

Wiring Diagram

CSW24UL Wiring Diagram
01-39240, 2018 · 2 pages · English, French View PDF: CSW24UL Wiring Diagram (opens in a new tab)

Spec Sheet

CSW24UL Data Sheet
5/2018 · 2 pages View PDF: CSW24UL Data Sheet (opens in a new tab)
CSW24UL Dimension Drawing
2019 · 1 page View PDF: CSW24UL Dimension Drawing (opens in a new tab)

Brochure

CSW24UL Product Guide
2020 · 2 pages View PDF: CSW24UL Product Guide (opens in a new tab)

Troubleshooting

Codes show on the diagnostic display. Press and release STOP to exit. Hold STOP for six seconds to clear the code history. Unplug the J15 plug before you cycle power to the control board.

Operator does not run and the display is off

Check AC power and battery power.
Check the fuses.
On battery only, batteries must read 23.0 VDC or higher. Charge or replace them.

Board powers up but the motor does not run

Check that the reset switch is not stuck.
Check the Stop input. Without a stop button, put a jumper on the stop circuit.
Look for an Open, Close, entrapment or loop input that is stuck on.

Gate opens but will not close on the timer

Look for an active Open input or exit loop.
Check the AC FAIL and LOW BATT switch settings if power is out or batteries are low.
Check the Fire Dept input and the Timer-to-Close dial.
Check the close entrapment devices.

Gate stops and reverses

An Open or Close input or a loop is becoming active during travel.
Battery voltage is below 23.0 VDC.
Code 91 or 93: check for an obstruction and make sure the gate moves freely by hand. For code 93, also check the wiring and the APE assembly.

Alarm sounds

Two obstructions in a row set off the alarm for up to 5 minutes.
Remove the obstruction and press the reset button.

Remotes do not work

Press the remote and watch the XMITTER LED.
Relearn the remote to the control board.
Check the antenna and antenna wire.

Common questions

Check for an active Open input or exit loop, the Timer-to-Close setting and the Fire Dept input. With AC power out, the AC FAIL or LOW BATT switch set to OPEN will hold the gate open. A blocked close photo eye or edge also stops the close.

It uses two 12 V, 7 Ah batteries. Replace them about every 3 years. You can upgrade to two 33 Ah batteries with the K94-37236 solar harness kit and a second battery tray. Do not mix 7 Ah and 33 Ah batteries, and 33 Ah batteries will not fit with the heater installed.

The alarm sounds after two obstructions in a row. Remove the obstruction, then press the reset button. Normal operation resumes after the reset.

Press the reset switch to RESET/DISCONNECT, then release the handle on the operator arm. On a dual gate, release both arms. Push the handle back down to lock the arm again.

Yes. The operator needs at least one external monitored entrapment device before it will run. It comes with an LMRRUL photo eye. Use LiftMaster monitored devices to cover every entrapment zone in both directions.

Replacement parts

Parts diagram: LiftMaster CSW24UL Parts Diagram and Replacement Parts