Troubleshooting; Basic Control Board Layout - Chamberlain LA400 Owner's Manual
Medium duty swing gate operator
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Also See for LA400:
- Installation and operation manual (45 pages) ,
- Owner's manual (32 pages) ,
- Owner's manual addendum (2 pages)
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TROUBLESHOOTING
BASIC CONTROL BOARD LAYOUT
14
13
18
12
11*
10
21
ITEM
DESCRIPTION
1
Connector P1
2
Connector P6
3
Connector P8
4
Connector P7
5
Connector P9
6
Connector P12
7
Connector P10
8
Connector P11
9
Connector P5
10
Connector P16
11
Connector P13
12
Connector P17
13
Connector P14
*See page 38 for max current draw
» BASIC CONTROL BOARD LAYOUT
20
K6
ALARM
NO
C
K5
MAGLOCK
NO
C
1
S8
NC
R2
LEARN
Z1
XMITTER
R1
10A 32V
2
GATE 1
F3
BRN
D1Ø
K2
GRN
WHT
YEL
BLU
RED
SET
K1
Q9
Z12
OPEN
LIMIT
R9Ø
ACCESSORY
POWER
24V
R1Ø1
BRN
R1ØØ
F4
GRN
10A 32V
WHT
K4
YEL
BLU
RED
K3
GATE 2
Q22
D15
R196
R4
C2
24 VAC/
INPUT
MOV2
J4
9
FUNCTION
Antenna Input
Close Edge
Open Edge/Photo
Open Photo
Close Photo
Switched Accessory Power*
Control Inputs
Loop Inputs
24 Vac Input
Gate 2
Accessory Power*
Gate 1
Maglock/Solenoid
26
19
17
P2
J19
Ø14GPØ89ØE
Ø14LGØ89ØE
Ø14SKØ89ØE
L1
OFF
ON
SAVE
OFF
ON
MAGLOCK
SINGLE
DUAL
MODE
NO
NC
EDGE
NO
NC
PHOTO
S1
DIAGNOSTIC
GATE 1
SET
LEARN
CLOSE
LIMITS
LIMIT
TIMER
GATE 2
RUNNING
BIPART
TIMER TO
DELAY
CLOSE
FORCE
ACCESSORY
OVLD
MIN
MAX
OFF
MAX
OFF
F5
D21
R35
D9
D8
C12
D27
Z3
F7
Z4
D22
U3
C11
R9
D4
MOV1
D1
C64
JMPR2
JMPR1
D2
U2
DB1
23
24
25
ITEM
DESCRIPTION
14
Connector P15
15
Connector
16
Connector
17
DIP Switch
18
Pushbutton
19
Pushbuttons
20
Pushbutton
21
Pushbuttons
22
Pushbutton
23
Potentiometer
24
Potentiometer
25
Potentiometer
26
Connector
41
1
R223
CLOSE
EDGE
R2Ø7
Z2 Ø
R227
OPEN EDGE/
PHOTO
J18
R224
U4
Z22
R92
Z9
OPEN
PHOTO
R91
R94
Z8
CLOSE
PHOTO
R93
24V
SWITCHED
ACCESSORY
COM
OVLD
POWER
OVLD
CONTROL
SINGLE
INPUTS
BUTTON
OPEN
SINGLE BUTTON
RESET
STOP
MAX
COM
COM
POWER
LOOP
INPUTS
C13
C4
SHADOW
INTERRUPT
CHGR
COM
OVLD
F6
F2
F1 20A 32V
FUSE
BATT 2
BATT 1
OPEN
16
15
FUNCTION
Alarm
Battery 1
Battery 2
S1
Learn Xmitter - Program Remote
Gate 1 - Jog Learn Limit
Learn Limits
Gate 2 - Jog Learn Limit
Single Button
Force
Bipart Delay
Timer-to-Close
Receiver
2
3
4
5
6*
22
7
8
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Table of Contents
Troubleshooting
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Do you have a question about the LA400 and is the answer not in the manual?
Questions and answers
LA400 code 5 how to fix. No remotes will make gate work.
Code 5 on the Chamberlain LA400 indicates an "RPM Reversal." To fix this issue when no remotes operate the gate, follow these steps:
1. Check for Obstructions – Ensure there are no physical obstructions preventing gate movement.
2. Inspect Force Settings – Adjust the force settings to ensure the gate operates smoothly.
3. Verify Connections – Check all electrical connections, including those to the control board and power supply.
4. Test with the Single Button Control (SBC) – Use the SBC button to manually operate the gate and confirm if the issue persists.
5. Reset the Operator – Power cycle the gate operator by turning it off and on.
6. Inspect for Mechanical Issues – Check for any mechanical resistance or damage to the gate arms.
If the problem continues, further troubleshooting of the control board or motor may be required.
This answer is automatically generated