LG LS-M3060HL / LS-M3060CL / LS-M3061HL / LS-M3061CL / LS-M3064HL / LS-M3064CL / LS-M3221HL / LS-M3221CL / LS-N3660HL / LS-N3660CL / LS-N3661HL / LS-N3661CL / LS-N3821HL / LS-N3821CL Service Manual ▷ View online
- 58 -
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.
remote controller is higher than one of the indoor temperature by 2°C
at least.
In heating Mode, the indoor fan operates in case the pipe temperature
is higher than 28°C.
is higher than 28°C.
Turn ON Main Power
• 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 STEP(U/D) Connector
• Check the soldering condition(on PWB) of STEP(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
- 59 -
Check the connector of intake and pipe sensor(thermistors)
• Check the related circuit of R02H(12.1K), 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).
Check the DC voltage on the PWB ASS’Y
• The details of check are as followings
CHECK POINT
Between Micom
(No.15) and GND
Between RY-COMP.
(No.1) and (No.4)
Between
CN-COMP2 and
CN-POWER 2(N)
COMP. ON
DC5V
About DC12V
AC 220~240V
COMP. OFF
DC0V
DC0V
Below AC10V
CHECK POINT
Between Micom
(No.13) and GND
Between RY-4WAY
(No.1) and (No.4)
Between CN-4WAY
and
CN-POWER 2(N)
COMP. ON
DC5V
About DC12V
AC 220~240V
COMP. OFF
DC0V
DC0V
Below AC10V
CHECK POINT
Between Micom
(No.14) and GND
Between RY-FAN
(No.1) and (No.4)
Between CN-FAN
and
CN-POWER 2(N)
COMP. ON
DC5V
About DC12V
AC 220~240V
COMP. OFF
DC0V
DC0V
Below AC10V
• 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.
- 60 -
Electronic Control Device
(1) INDOOR UNIT P.W.B. ASSY
P/No.: 6871A10012 (PCB ASSY, MAIN)
MODEL
OPTIONAL
PLASMA
OR1H
OR2H
OR3H
OR4H
OR5H
OR6H
CN-AIRC
CN-SW
LS-M3060HL
OPEN
56K
91K
20K
20K
20K
X
X
LS-M3061HL
OPEN
56K
91K
20K
20K
20K
O
O
LS-M3064HL
OPEN
56K
91K
20K
20K
20K
O
O
LS-M3221HL
OPEN
56K
91K
6.8K
10K
2K
O
O
LS-M3060CL
10K
OPEN
91K
20K
20K
20K
X
X
LS-M3061CL
10K
OPEN
91K
20K
20K
20K
O
O
LS-M3064CL
10K
OPEN
91K
20K
20K
20K
O
O
LS-M3221CL
10K
OPEN
91K
6.8K
10K
2K
O
O
LS-N3660HL
OPEN
56K
27K
2K
10K
X
X
LS-N3661HL
OPEN
56K
27K
2K
10K
O
O
LS-N3821HL
OPEN
56K
27K
27K
20K
39K
O
O
LS-N3660CL
10K
OPEN
27K
2K
10K
X
X
LS-N3661CL
10K
OPEN
27K
2K
10K
O
O
LS-N3821CL
10K
OPEN
27K
27K
20K
27K
O
O
t=0.6mm,
7.5mm
t=0.6mm,
7.5mm
t=0.6mm,
7.5mm
t=0.6mm,
7.5mm
- 61 -
(2) OUTDOOR UNIT P.W.B. ASSY
MODEL
SOFT-STARTER
LS-M3060HL
X
LS-M3061HL
X
LS-M3064HL
O
LS-M3221HL
X
LS-M3060CL
X
LS-M3061CL
X
LS-M3064CL
O
LS-M3221CL
X
LS-N3660HL
X
LS-N3661HL
X
LS-N3821HL
X
LS-N3660CL
X
LS-N3661CL
X
LS-N3821CL
X
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