DOWNLOAD LG LM-1860HL Service Manual ↓ Size: 1.16 MB | Pages: 65 in PDF or view online for FREE

Model
LM-1860HL
Pages
65
Size
1.16 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lm-1860hl.zip
Date
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LG LM-1860HL Service Manual ▷ View online

- 51 -
YES
YES
NO
YES
YES
YES
NO
NO
NO
NO
Possible Trouble 3
Possible Trouble 4
: Up/Down Air direction louver does not operate.
: Remote controller does not operate.
Is the IC7 O.K?
Exchange the IC7.
Check the P.C.B of DC
12V pattern.
Is the voltage 
of CN-UP/DOWN NO
12DC12V?
Is the battery 
consumption O.K?
Exchange the battery.
Check the P.C.B
pattern.
Connect CN-DISP
exactly.
Is DC5V between 1
and 7 of CN-DISP
Is the connection of
CN-DISP all right?
Exchange receiver asm
Check the step motor and
Connector(CN-UP/DOWN)
- 52 -
YES
NO
NO
YES
Possible Trouble 5
: Ineffective Heating
Does 4way operate?
Check and Exchange
IC8
Check and Exchange
IC8, RY-4WAY
Check Voltage of IC8
1pin (DC5V?)
P.C.B pattern Check
- 53 -
YES
NO
Possible Trouble 6
: It does not operate forced operation.
Is the F/OP KEY OK?
Exchange the F/OP, KEY
P.C.B pattern Check
(1) MAIN P.C.B ASM: LM-1860CL(A.C.CIRCUIT)
(2) MAIN P.C.B ASM: LM-1860CL(D.C.CIRCUIT)
- 54 -
Electronic Control Device
CAPA H
M
L
COM
CN-FAN
ZNR1
CN-TRANS(IN)
N/FILTER
PCB:6870AQ2153A
ASM:6871AQ2156
SH-CAPA
ZNR3
ZNR4
SSR-H
SSR-M
SSR-L
RY-COMP
ZNR2
CN-AC/DC
7
1
FUSE
250V/T2A
COMP
4
3
CN-POWER
1
2
INPUT POEWER
IC7
CN-TH
C51
15
20
25
30
35
40
50
IC8
BZ
C07 C08
C05
J6
X01
R01
RO3
RO2
IC1
C06
J5
IC02
R12
R14
R21
R22
R23
C01
C02
R11
J3
J4
R15
R34
R33
BD01
TR31
C31
R13
CN-TRANS
R31
J1
F/OP
KEY
R32
CN-DISP
5V
12V
CN-UP/DOWN
CN-AC/DC
7
1
12V
PCB:6870AQ2154A
ASM:6871AQ2157
C03
C04
IC3
R25
R24
R52
R61
C42
R43
R41
IC04
R51
R42
C41
R71
R72
R73
R74
J2
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