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Model
LS-J0761NL_NM_NN LS-J0962NL_NM_NN LS-L1261NL_NM_NN
Pages
75
Size
3.1 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
ls-l1261nl.zip
Date

LG LS-J0761NL_NM_NN / LS-J0962NL_NM_NN / LS-L1261NL_NM_NN Service Manual ▷ View online

10.1 Sleep timer operation for cooling cycle
• While in cooling mode operation, 60 min. later since the start of the sleep timer, the setting temperature
increase by 0.5°C. After another 60min. elapse, it increases by 1°C again.
10.2 Sleep timer operation for heating cycle
• While in heating mode operation, 60 min. later since the start of the sleep timer, the setting temperature
decrease by 0.5°C. After another 60min. elapse, it decreases by 1°C again.
-21-
Setting temp. (˚C)
0.5˚C up
0.1˚C up
Cooling ON temp.
(Setting temp. +0.5˚C)
Cooling OFF temp.
(Setting temp. -0.5˚C)
1
2
Sleep time (hr)
Setting temp. (˚C)
Heating ON temp.
(Setting temp)
Heating OFF temp.
(Setting temp. +3.0˚C)
1
2
Sleep time (hr)
0.5˚C down
1.0˚C down
10. Sleep timer operation
• When the sleep time is reached after [1,2,3,4,5,6,7hr] is input by the remote control during the operation,
the operation of the appliance stops.
• When the appliance is on pause, the sleep timer mode cannot be input.
11. Auto restarting operation
• When the power is restarted after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• The slide switch on the indoor unit of the appliance should be on the AUTO RESTART position in order that
the Auto restarting operation is available.
• Operation mode that is kept on the memory
— State of operation ON/OFF
— Operation mode/setting temp./selected airflow speed
— Sleep timer mode/remaining time of sleep timer
12. Forced operation
• To operate the appliance by force in case that the remote control is lost, the forced operation selection switch
is on the main unit of the appliance to operate the appliance in the standard conditions.
• The operation condition is set according to the outdoor temp. and intake air temperature as follows.
-22-
Outdoor temp.
over 24°C
21~24°C
18~21°C
below 18°C
Setting temp.
22°C
23°C
23°C
24°C
24°C
Setting speed of
indoor fan
High speed
Operating Mode
Cooling
Healthy Dehumidification
Intake air temp. 
25°C 
Dehumidification
Intake air temp. < 25°C 
Heating
Heating
FORCED
OPERATION
AUTO
RESTART
REMOTE
CONTROL
Slide Switch of indoor unit
13. Power relay control
• Power relay turns on 1 second later after the power is input to the outdoor unit.
• Control sequence : power on 
PTC operating 
➔ 
power relay on 
14. Protection from total current control
CT1 control
• If the operating current reaches I1, the operating frequency of the compressor decrease.
• After decreasing the operating frequency by 1step, if operating current is below I1 for 24 seconds continuous-
ly, the operating frequency of compressor increase by 1step.
CT2 control
• If the operating current of the appliance reaches I2, the compressor stop instantly and 2 minutes later the
compressor restart again.
• If CT2 occurs twice within 1hour, the appliance turn off and display ERROR CODE 7.
-23-
Model
LS-J0761NL/NM/NN
LS-J0962NL/NM/NN
Cooling
Heating
8.5A
10A
11.5A
8A
9.5A
11.5A
Cooling
Heating
9A
10.5A
13.5A
8.5A
10A
13.5A
Cooling
Heating
10.5A
12A
13.5A
10A
11.5A
13.5A
Operating mode
below 38°C
(outdoor temp.)
I1
I2
I1
I2
over 38°C
(outdoor temp.)
LS-L1261NL/NM/NN
Condition
I1:Current of operating frequency down
I2: Current of compressor cut off
cf. I1 is set the lowest level between intial value and in case dectection of dc paeak current.
Control table
15. Protection from DC Peak Current
DC Peak Current Error by a fault signal of IPM
• If the operating current of IPM reaches 35A ±3A, the compressor stop instantly.
• If DC PEAK occurs 3 times within 1 hour, the appliance turns off and display ERROR CODE 6.
DC Peak Current Error by the compressor lock
• If the DC LINK voltage below DC 350V occurs 5 times within 1 hour while the compressor is operating, the
appliance turns off and display ERROR CODE 6.
DC Peak Current Error by the Outdoor Fan Lock
• If it’s 5 times within 1 hour in case of the temperature of outdoor pipe TH is over 65°C while the compressor is
operating, the appliance turns off and display ERROR CODE 6.
16. Portection from overheating of power module
• If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly.
• It will be limited the compressor operating frequency according to the heat sink TH.(refer to below FIG.)
• It will be blink 4 times, when the thermistor is open or short, also the temperature is over Toff.
17. Portection from overheating of compressor
• If the temperature of the discharge pipe of compressor reaches over 130°C or below -30°C the compressor
stop instantly.
• It will be limited the compressor operating frequency according to the compressor dome TH.(Refer to below
Fig.)
-24-
Comp. off
Comp. free
Fc-1
Fc-2
Target frequency
Toff (84
°
C)
Ton + 2
°
C (78
°
C)
Ton + 5
°
C (81
°
C)
Ton (76
°
C)
130
°
C
118
°
C
111
°
C
108
°
C
-13
°
C
-30
°
C
101
°
C
93
°
C
Fhmin
OFF
OFF
0Hz
Fc-2
Fc-1
Setting frequency
[The control graph from heat–sink TH]
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