LiftMaster LA400 Support and Manuals

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Most Recent LiftMaster LA400 Questions

Won't Reset
settings the open and close limits and after I set one it goes back to set the other one and so on b...
(Posted by chadmq 8 months ago)
Liftmaster La400 - Power On, Stop On, Close Edge On
Liftmaster LA400 - POWER LED steady on, STOP LED steady on, CLOSE EDGE LED steady on (but I don't ha...
(Posted by richard86209 1 year ago)
Can't Set Limits
When pressing learn limits button to save after setting limits, open limit light flashes again, star...
(Posted by nhidalgo 1 year ago)
Why Does My La400 Gate Opener Make So Much Noise
the motor on my la400 makes loud motor noise when in operation. How do I fix that? It's only about 1...
(Posted by Mwdornan 2 years ago)
Gate Will Only Open. The Motor Will Not Switch It To Close
it's an older wired on
(Posted by Mo424mo 2 years ago)

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Popular LiftMaster LA400 Manual Pages

LA400 Manual - Page 1

The operator can be used in Class I, Class II and Class III applications. 2 YEAR WARRANTY Radio Receiver Built on Board 315 MHz LA400 & LA400-S MEDIUM DUTY SWING GATE OPERATOR OWNER'S MANUAL MeBtOoLaaxplrtC(giXooennLMatrl)ol Serial # Primary Arm Serial # Secondary Arm Serial # Control Box Installation Date The LA400 is intended for use with vehicular swing gates.
LA400 Manual - Page 2

...Remote Control Manual Release Maintenance TROUBLESHOOTING Basic Control Board Layout Wiring Diagram Diagnostic Codes Troubleshooting Chart REPAIR PARTS Control Box Gate Operator Arm How to Order Repair Parts WARRANTY POLICY ACCESSORIES TEMPLATE SAFETY » SAFETY SYMBOL AND SIGNAL WORD REVIEW When you see this manual and follow all safety instructions. • DO NOT attempt repair or service...
LA400 Manual - Page 21

... /SOLAR EARTH GROUND ROD INSTALLATION (REQUIRED) It is 2 The control box can be mounted to 3 Chamberlain loop detectors model LO7LP (not provided). Ground Screw Standoffs ALARM LOCK SOL GND MAGR GATE 1 BR GR WH YL BL RD ACCESSORY POWER 12 V BR GR WH YL BL RD GATE 2 LEARN XMITTER ON OFF LOCK / BIPA RT DELAY CLOSE EDGE OPEN EDGE/ PHOTO OPEN PHOTO SET OPEN LIMIT GATE 1 CLOSE...
LA400 Manual - Page 22

... the control box. Follow all instructions for the control board power supply. One of the control box based on the application requirements. 2 Depending on the voltage and application the 120 Vac access panel may be used to access the wiring. 3 Connect two 7AH batteries, purchased separately. The second receptacle can be removed to power up additional gate operator accessories. The...
LA400 Manual - Page 28

...to the control box. 2 Run low voltage wire between the transformer and control box. Serve 2 Air (2) Conditioner Comp. NOTE: The transformer must be located in the standard control box for suitability of wire installation. Control Box 1 Transformer Circuit Panel Refer. Dept. Manu. 2 Rm 27 Manu. 1 Rm Main Dept. Local codes and conditions must be reviewed for accessories. EXTERNAL...
LA400 Manual - Page 29

...outlet plate. Both batteries are the main source of the control board marked . ALARM MAGLOCK Z1 GATE 1 ACCESSORY POWER GATE 2 R4 J4 FUSE FUOSPEEN OPEN D15 C2 MOV2 Control Box R4 C2 J4 24 VAC/ SOLAR INPUT Ground Screw 12 Gauge Wire 3' (0.9 m) Earth Ground Installation (Optional) 8' (2.4 m) CONNECT BATTERIES The batteries are charged in circuit using the transformer (provided).
LA400 Manual - Page 31

... GATE 1 SET CLOSE OR SINGLE ARM RIGHT-HAND SIDE PROGRAM OPEN 3 Press the LEARN LIMITS button (SET OPEN LIMIT LED will beep. SET OPEN LIMIT SET CLOSE LIMIT The control board beeps and the SET OPEN LIMIT and SET CLOSE LIMIT LEDs stop blinking, programming is Left-handed or Right-handed. RESET BUTTON DIAGNOSTIC GATE 1 SET CLOSE 5 When gate is mounted and how many operators...
LA400 Manual - Page 32

... DIAGNOSTIC GATE 1 SET CLOSE 9 Press the LEARN LIMITS button. If the problem continues, see Troubleshooting section.) Test the limits by pressing the SBC to open and close the right operator. DUAL GATE (LEFT-SIDE PRIMARY OPERATOR) 1 Close the gate. 2 Engage the operator by turning the release lever clockwise 180°, then turning the key clockwise 180°. Control board SET SET GATE...
LA400 Manual - Page 35

... XMITTER button and release (LED will light up ). All previous codes are programmed. THERE ARE NO OTHER USER SERVICEABLE PARTS. PROGRAMMING » REMOTE CONTROLS + KEYLESS ENTRY + ERASE ALL CODES + TEST A combined total of this device must accept any adjustments are made, test the operator: 1 Use the Single Button Control (SBC) button to open and close the gate. 2 Test the limits...
LA400 Manual - Page 43

... power and battery BEFORE installing or servicing operator. LOOP INPUTS, SAFETY/SHADOW 9. LEARN XMITTER 19. DIP SWITCH, S1 18. CONTROL INPUTS/EXIT LOOP 8. TROUBLESHOOTING » WIRING DIAGRAM + DIAGNOSTIC CODES To protect against fire: • Replace ONLY with fuse of same type and rating. ANTENNA INPUT 2. TRANSFORMER INPUT 10. FAULT ALARM OUTPUT 15. SECOND GATE...
LA400 Manual - Page 44

... 2) Timer-to-Close not set. 3) Accessory device wired to Open Only command. 1) Battery Low >23.5 V 1) Bipart Delay not set too low. 3) Bad gate hardware. 4) Incorrect Arm installation. 1) Obstructed Arm (bottoms out). 2) Bad RPM Sensor. 3) Too much mA pulled off board. See Programming Remote instructions. Replace control board. See Installation section for adjustment instructions. See Timer-to...
LA400 Manual - Page 45

... K76-35364 DESCRIPTION QTY Control Board 1 Control Box & Cover with Gasket 1 Control Board Bracket 1 Reset Switch 1 Antenna 1 Battery 2 Transformer 1 Alarm 1 Not Shown ATC Fuse Kit Includes 20 Amp (1), 15 Amp (2) Receiver Module - 390 MHz Receiver Module - 315 MHz Reset Switch (XLM Control Box) Alarm (XLM Control Box) GATE OPERATOR ARM 22 33 ITEM PART # DESCRIPTION QTY...
LA400 Manual - Page 46

...Country Club Road Tucson, AZ 85706 WARRANTY POLICY LIFTMASTER TWO YEAR LIMITED WARRANTY The Chamberlain Group, Inc. If, during the limited warranty period, this product appears to comply strictly with the instructions regarding installation, operation, maintenance and testing. Defective parts will void this limited warranty, will be repaired or replaced with any product returned for...
LA400 Manual - Page 47

...easy to push the gate open. The model LA400 requires two batteries. Includes mounting hardware. Gate Solenoid Lock: Heavy all steel construction. Magnetic Gate Lock: Outdoor magnetic lock, transformer, junction box, mounting plate and hardware. 373LM 86LM 377LM 3-Button SECURITY✚®OPENRemote Control : Includes visor clip. 29-NP712 Remote Antenna Mounting Kit: Kit contains antenna...
LA400 Push to Open Addendum Manual - Page 2

... be used. 8. Control Board and Mounting Plate Batteries 01-32479B © 2008, The Chamberlain Group, Inc. Remove brackets from electrocution, DISCONNECT electrical power to operator. 2. Secure gate bracket to the control board. 9. Open the control box cover. 3. Reconnect all quick connect terminals to cross member with 3/8"-16 x 6" carriage bolts, flat washers, lock washers and...

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We have the following 3 documents available for the LiftMaster LA400:
  • LA400 Manual
  • LA400 Pull to Open Addendum Manual
  • LA400 Push to Open Addendum Manual
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