Page 43: Wiring diagram + diagnostic codes, Wiring diagram diagnostic codes, Gate 1, Gate 2

Liftmaster manuals are in pdf form so you can print the instructions of the product manual. Check out whether the Up and Down arrows flash and see the explanation of these diagnostic codes below. You will probably also notice symptoms showing that something is out of order. These symptoms are explained in the Liftmaster garage door opener manual below. Liftmaster 371lm Garage Door Opener Remote - Source: https://www.amazon.com/Liftmaster-371LM-Garage-Opener-Remote/dp/B000CST0L0. Appliance manuals and free pdf instructions. Find the user manual you need for your home appliance products and more at ManualsOnline. Chamberlain Garage Door Opener HD920EV User Guide ManualsOnline.com.

Check out whether the Up and Down arrows flash and see the explanation of these diagnostic codes below. You will probably also notice symptoms showing that something is out of order. These symptoms are explained in the Liftmaster garage door opener manual below. Liftmaster Garage Door Opener Error Codes can be challenging unless you find an easy-to-use, quick guide created by expert repairmen.

42

TROUBLESHOOTING

» WIRING DIAGRAM + DIAGNOSTIC CODES

To protect against fire and electrocution:
• DISCONNECT power and battery BEFORE installing or servicing operator.

For continued protection against fire:
• Replace ONLY with fuse of same type and rating.

Z22

R91

CLOSE
EDGE

R94

R92

R93

L1

R1

R2

Z1

K5

K2

F3

10 A 32 V

D1 ÿ

OPEN EDGE/

PHO T O

OPEN
PHO T O

CLOSE
PHO T O

J18

R227

R2 ÿ 7

Z2 ÿ

R223

Error Code 80073712 Windows 7

P1

Z9

Z8

F2

F6

D4

D2

R9

C64

JMPR1

R224

U4

P2

J1

J19

SINGLE

BUT T O N

CONTROL

INPUTS

FORCE

BI P A R T

DEL A Y

TIMER T O

CLOSE

MIN MAX OFF MAX OFF MAX

OPEN

SINGLE BUT T O N

RESET

S T O P

SHADOW

S1

INTERRUPT

CHGR
OVLD

COM

COM

COM

FUSE
OPEN

LOOP

INPUTS

POWER

B A T T 1

B A T T 2

F1 20 A 32 V

R35

D9

Z3

Z4

U3

D1

D27

F5

C 1 1

C13

C12

D15

C2 R4

R1 ÿ 1

R1 ÿÿ

R9 ÿ

Q9

K1

R196

Q22

D8

K3

K4

D21

D22

C4

ACCESSO R Y

OVLD

D6

JMPR2

MOV1

MOV2

DB1

U2

Z12

24 V AC /

INPUT

G A TE 2

MAGLOCK

ALARM

C

C

NC

NO

NO

GRN

WHT

YEL

BLU

RED

BRN

GRN

WHT

YEL

BLU

RED

BRN

F4

10 A 32 V

F7

24V

24V

COM

OVLD

OVLD

SWITCHED

ACCESSO R Y

POWER

TIMER

RUNNING

G A TE 2

SET

OPEN

LIMIT

SET

CLOSE

LIMIT

LEARN
LIMITS

DIAGNOSTIC

G A TE 1

J4

S A V E
MAGLOCK
MODE
EDGE
PHO T O

OFF
OFF

SINGLE

NO
NO

ON
ON
DUAL
NC
NC

LEARN

XMITTER

S8

1 2 3 4 5

O

N

2

1

ANTENNA

CONNECTION

YELLOW/GREEN

(OR OPTIONAL EARTH GROUND WIRE)

GROUND

G R N

W H T

YE L

B L U

R E D

B R N

GATE 1

G R N

W H T

Error Code 80073712 Windows 8.1

YE L
B L U

R E D

B R N

K6

EDGE EDGE

OR

EDGE

EDGE

OR OR

PHO T O

PHO T O

OR OR

OR OR

PHO T O

PHO T O

CPS-LN4

24VDC OUTPUT
SWITCHED OFF

IN LOW POWER MODE

OPEN (EXI T LOOP )

SINGLE BUT T O N

RESET

S T O P

COMMON (+24VDC)
COMMON (+24VDC)

SHADOW LOOP

INTERRUP T LOO P

COMMON (+24VDC)

GATE 2

RED

BLA

CK

RED

BLA

CK

BLUE

YELLO

W

GATE 1

ACCESSORY

POWER

1. ANTENNA INPUT
2. CLOSE EDGE
3. OPEN EDGE/PHOTO EYE
4. OPEN PHOTO EYE
5. CLOSE PHOTO EYE
6. 24VDC ACCESSORY OUTPUT
7. CONTROL INPUTS/EXIT LOOP
8. LOOP INPUTS, SAFETY/SHADOW
9. TRANSFORMER INPUT
10. SECOND - OPERATOR ARM CONNECTION
11. 24VDC ACCESSORY OUTPUT
12. MASTER OPERATOR ARM CONNECTION

13. MAGLOCK/SOLENOID OUTPUT
14. FAULT ALARM OUTPUT
15. BATTERY INPUT #1
16. BATTERY INPUT #2
17. DIP SWITCH, S1
18. LEARN XMITTER
19. MASTER GATE JOG
20. LIMIT SET
21. SECOND GATE JOG
22. SBC (SINGLE BUTTON CONTROL)
23. FORCE SET
24. BIPART DELAY SET
25. TIMER TO CLOSE SET

7

8

15

2

3

4

5

6

1

16

23

24

25

9

21

20

19

10

11

Windows 8 Error Code

12

18

14

22

13

17

NOTE:Batteries must be connected
to operate.

NOTE:Yellow/green wire must
be disconnected when earth
ground rod is installed.

CPS-LN4

CPS-LN4

MAGLOCK

C

NC

NO

MAGLOCK

C

NC

NO

Fault Alarm

Siren (optional)

Flashing Strobe (optional)

Solenoid Lock

(optional)

Maglock

(optional)

(not provided)

(not provided)

WIRING DIAGRAM

DIAGNOSTIC CODES

# OF BLINKS

MEANING

1

No Stop Switch Connected

2

Gate 1 Arm Disengaged

3

Gate 2 Arm Disengaged

4

Both Gate Arms Disengaged

5

RPM Reversal

# OF BLINKS

MEANING

6

Force Reversal

7

Liftmaster Error 4 1

Processor Reset

8

ROM Check Failed

9

Liftmaster Error Code 1 4

RAM Check Failed

10

EEPROM Check Failed - Reset Limits

Liftmaster Error Code 1 5

Liftmaster Motor Control Error 1 5