LG LS-K1863HL Service Manual ▷ View online
- 58 -
Check the connector of intake and pipe sensor(thermistors)
• Check the related circuit of R02H(12.1K), R04H(6.2K),
Micom(No. 26, 27).
• Check the indoor room temperature is disconnected or not (about
10K
Ω
/at 25°C).
• Check the indoor pipe temperature is disconnected or not (about
5K
Ω
/at 25°C).
Check the DC voltage on the PWB ASS’Y
• The details of check are as followings
Check point
Between Micom
(NO.59) and GND
Between IC01M
(NO.15) and GND
Comp ON
DC 5V
Below DC 1V
Comp OFF
DC 0V
About DC
12V
Check point
Between Micom
(No. 51) and GND
Between IC02M
(No. 15) and GND
4 way ON
DC 5V
Below DC 1V
4 way OFF
DC 0V
About DC 12V
Check point
Between Micom
(NO.53) and GND
Between IC02M
(No. 14) and GND
Fan ON
DC 5V
Below DC 1V
Fan OFF
DC 0V
About DC 12V
• Comp Relay.
• 4 way Relay
• Outdoor fan Relay
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.
• Check the abnormal condition for the component of
• Check the abnormal condition for the component of
Compressor/Outdoor Fan Motor, 4 way.
• Check the "open" or "short" of connecting wires between indoor and
outdoor.
- 59 -
Electronic Control Device
(1) MAIN P.W.B ASM
(2) MAIN P.W.B ASM
- 60 -
1
LS-K1863HL/HM/HN
6871A10020F
91K
91K
3K
10K
5.1K
12K
2
LS-K1864HL/HM/HN/BL/EL
6871A10026N
91K
91K
3K
10K
5.1K
12K
3
LS-K1867HL/HM/HN
6871A10020G
91K
91K
3K
10K
5.1K
12K
4
LS-K2423HL/HM/HN
6871A10020V
91K
56K
6.8K
1K
12K
12K
5
LS-K2424HL/HM/HN
6871A10020Y
91K
56K
6.8K
1K
12K
12K
6
LS-K2465HL/HM/HN
6871A10023Q
91K
27K
3K
1K
5.1K
39K
7
LS-K2466/2467/2468HL/HM/HN/BL/EL 6871A10023R
91K
27K
3K
1K
5.1K
39K
8
LS-K2665HL/HM/HN
6871A10023Q
91K
27K
3K
1K
5.1K
39K
9
LS-K2666HL/HM/HN/BL/EL
6871A10023S
91K
27K
3K
1K
5.1K
39K
10
LS-K2669HL/HM/HN
6871A10023U
91K
27K
3K
1K
5.1K
39K
(3) Display Ass'y
No.
Model
P/No
Remark
1
18K, 24K, 26K
6871A30009D
P.W.B ASS'Y SVC PART LIST
No.
MODEL
P/No.
OR1H
OR2H
OR3H
OR4H
OR5H
OR6H
OPTIONAL FUNCTION
- 61 -
Schematic Diagram
Cooling Only Series
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