LG LS-K2460HL Service Manual ▷ View online
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• Confirm that the Vertical Louver is normally geared with the shaft of
Stepping Motor.
• If the regular torque is detected when rotating the Vertical Louver with
hands
Normal
• Check the connecting condition of CN-U/D Connector
• Check the soldering condition(on PWB) of CN-U/D Connector
• Check the soldering condition(on PWB) of CN-U/D Connector
If there are no problems after above checks
• Confirm the assembly conditions that are catching and interfering parts
in the rotation radial of the Vertical Louver
5. When Vertical Louver does not operate.
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin
(RED) of CN-U/D and
GND.
• Confirm that there is a soldering short at following terminals.
- Between
,
,
and
of MICOM
- Between
,
,
and
of IC01M
- Between
,
,
and
of IC01M
58
59
60
61
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6. When Heating does not operate
Operate “Heating Mode(
)” by setting the desired temperature of the
remote controller is higher than one of the indoor temperature by 2°C
at least.
at least.
In heating Mode, the indoor fan operates in case the pipe temperature
is higher than 28°C.
is higher than 28°C.
Check the connector of intake and pipe sensor(thermistors)
• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K),
R03H(1.0K), Micom(No. 3, 4).
• 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).
Turn ON Main Power
Check the DC voltage on the PWB ASS’Y
• The details of check are as followings
Check point
Between Micom
(NO.62) and GND
Between IC01M
(NO.14) and GND
Comp ON
DC 5V
Below DC 1V
Comp OFF
DC 0V
About DC
12V
Check point
Between Micom
(NO.54) and GND
Between IC02M
(NO.16) 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.15) and GND
Fan ON
DC 5V
Below DC 1V
Fan OFF
DC 0V
About DC 12V
• Comp Relay.
• 4 way Relay
• Outdoor fan Relay
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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.
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Electronic Control Device
(1) MAIN P.C.B ASM
PCB ASS'Y SVC PART LIST
NO.
MODEL
P/NO
OPTIONAL FUNCTION
OR1H
OR2H
OR3H
OR4H
OR5H
OR6H
1
LS-K1820CL/CM 6871AQ2420Q
6.8K
OPEN
3K
56K
27K
20K
2
LS-K1820HL/HM 6871AQ2420P
91K
5.1K
3K
16K
27K
20K
3
LS-K1860CL/CM 6871AQ2420N
6.8K
OPEN
3K
15K
10K
20K
4
LS-K1860HL/HM 6871AQ2420M
91K
6.8K
3K
10K
5.11K
12K
5
LS-K1861CL/CM 6971A20035A
6.8K
OPEN
3K
15K
10K
20K
6
LS-K1861HL/HM 6871A20035B
91K
6.8K
3K
10K
5.1K
12K
7
LS-K2420CL/CM 6871AQ2420U
6.8K
OPEN
SHORT
20K
27K
20K
8
LS-K2420HL/HM 6871AQ2420T
91K
1K
SHORT
15K
27K
10K
9
LS-K2621CL/CM 6871A20035C
6.8K
OPEN
SHORT
20K
27K
20K
10
LS-K2621HL/HM 6871A20035D
91K
1K
SHORT
15K
27K
10K
11
LS-K2460CL/CM 6871AQ2420R
6.8K
OPEN
SHORT
6.8K
2K
SHORT
12
LS-K2460HL/HM 6871AQ2420S
91K
SHORT
SHORT
6.8K
2K
SHORT
13
LS-K2661CL/CM 6871A20035E
6.8K
OPEN
SHORT
6.8K
2K
SHORT
14
LS-K2661HL/HM 6871A20035F
91K
SHORT
SHORT
6.8K
2K
SHORT
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