LG LS-D2461HL Service Manual ▷ View online
Possible Trouble 2
: Indoor fan dose not operate
ƒ¡
58
ƒ¡
NO
YES
YES
NO
Is it the DRY Mode?
Is it the Heating
operation Mode?
Is DC40V between
1 and 3 of CN-FAN
Exchange Motor sub
P.C.B ASM
P.C.B ASM
YES
Is DC12V between
3 and 4 of CN-FAN
YES
NO
NO
Adjust setting temp.
Does the temperature
set all right?
NO
Adjust setting temp.
Does the temperature
set all right?
NO
YES
Check the FAN Motor
and Connector
and Connector
Does the LD4
of display P.B.C asm light?
NO
YES
YES
Check CN-FAN, CN-DC/DC
Connector and outdoor
P.C.B ASM
Connector and outdoor
P.C.B ASM
Check CN-FAN and P.C.B
pattern
pattern
Is DC28V between
1 and 3 of CN-FAN
24K, 26K, 28K, 30K
18K
ƒ¡
59
ƒ¡
Possible Trouble 3
: Right/Left air direction louver does not operate.
Possible Trouble 4
: Up/Down air direction louver does not operate.
YES
YES
NO
YES
Is the IC7,8 OK?
Is the voltage of NO.1 pin of
CN-LEFT, CN-RIGHT DC12V?
Is the connection
between step motor and main
P.C.B OK?
Exchange step motor
Check DC12V pattern of
main P.C.B
main P.C.B
Connect correctly
NO
NO
Exchange the IC7,8
YES
YES
NO
YES
Is the IC7 OK?
Is the voltage of NO.1 pin
of CN-Up/Down DC12V?
Is the connection
between step motor and main
P.C.B OK?
Exchange step motor
Connect correctly
NO
NO
Exchange IC7
Check DC12V pattern of
main P.C.B
main P.C.B
ƒ¡
60
ƒ¡
Possible Trouble 5
: Remotoe controller does not operate.
Possible Trouble 6
: Forced operation key does not work.
YES
YES
NO
YES
Is the battery
voltage OK?
Is voltage between
pin NO1and NO.7 of CN-DISP
DC5V?
Is the connection
of CN-DISP P.C.B all right?
Exchange display P.C.B ASM
Connect CN-DISP exactly
NO
NO
Exchange the battery
YES
NO
Is the voltage of pin
NO.61 of IC1 0V while the key
is pushed?
Check P.C.B pattern
Exchange the forced
operation switch
operation switch
Check main P.C.B pattern
ƒ¡
61
ƒ¡
Possible Trouble 7
: Heating operation does not work.
YES
YES
NO
YES
Is the operation mode right?
Is the connection
between CN-TH and outdoor main
PCB all right?
Does 4-way valve work?
Check P.C.B pattern
Exchange IC1
NO
NO
Set heating operation
mode
mode
YES
Is the voltage of pin NO.4
of IC8 DC5V?
YES
Is the voltage of pin NO.13
of IC8 DC0V?
YES
Is the voltage of CN-4way
AC220-240V?
YES
Is the connection of
CN-4way OK?
Exchange 4-way valve
NO
Connect correctly
Exchange IC8
NO
Exchange RY-4way
NO
Connect correctly
NO
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