LG LS-M3061HL Service Manual ▷ View online
- 57 -
Check the TRIAC high speed operation by Remocon.
(The Indoor Fan Motor is connected)
Turn off Main power
Check the connection of CN-MOTOR
Check the Fan Motor
Check the Fuse(AC250V/T2A)
Turn ON Main Power
Check the related circuit of indoor Fan Motor.
• The pin NO 63 of Micom, and the part for driving TRIAC(the input and
output signal of IC01M, PIN NO 2, 15)
• Check the pattern
• Check the TRIAC
• Check the TRIAC
- TRIAC Open: Indoor Fan Motor never operate
- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.
- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.
4. When indoor Fan does not operate.
The voltage of PIN NO 1(blue) and 3(yellow) of CN-MOTOR.
About AC 180V over
About AC 50V over
TRIAC is not damaged
TRIAC Check
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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.
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.
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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
10K
12K
27K
O
O
LS-M3060CL/AL
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-M3063CL
LS-M3221CL
10K
OPEN
91K
10K
12K
27K
O
O
LS-M3021CL
LS-N3660HL
OPEN
56K
27K
Short
2K
10K
X
X
LS-N3661HL
OPEN
56K
27K
Short
2K
10K
O
O
LS-N3821HL
OPEN
56K
27K
27K
20K
39K
O
O
LS-N3660CL/AL
10K
OPEN
27K
Short
2K
10K
X
X
LS-N3661CL/AL
10K
OPEN
27K
Short
2K
10K
O
O
LS-N3821CL
10K
OPEN
27K
27K
20K
27K
O
O
LS-N3621CL
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