LG LS-J0761NL_NM_NN / LS-J0962NL_NM_NN / LS-L1261NL_NM_NN / LS-K1860NL_NM_NN_YL / LS-K181N-1 Service Manual ▷ View online
-15-
4. Cooling mode operation
• Operating frequency of compressor depend on the difference of the temperature.
(= intake air Temp.- Compressor off Temp.
• Compressor off temp.= setting temp. -0.5°C
on temp. = setting temp. +0.5°C
• If compressor operates at some operating frequency, the operating frequency of compressor cannot be
changed within 30 seconds.
• Condition of compressor turned off
- When intake air temperature stay at the temperature between setting temp. -0.5°C and setting temp.
-1.0°C for 3 minutes continuously.
- When intake air temperature reaches below the temperature of setting temp. -1.0°C.
• Compressor 2 minutes delay
- The compressor can restart minimum 2 minutes later after compressor off.
Temp. differences
over 2.5°C
2.0~2.49°C
1.5~1.99°C
1.0~1.49°C
0.5~0.99°C
0.0~0.49°C
Comp. Operating frequency
Step 12
Step 10
Step 8
Step 4
Step 2
Step 1
[The operating freq. step of comp.]
[The targeting operating freq. of comp. each model]
Model
7K Btu Series
9K Btu Series
12K Btu Series
18K Btu Series
Comp. Operating frequency
40
47
54
64
74
85
45
53
72
86
95
110
35
47
51
58
62
67
35
47
57
66
71
96
Step 1
Step 2
Step 4
Step 8(Fc)
Step 10
Step 12
-16-
5. Healthy Dehumidification mode operation
• When the dehumidification operation is set by the remote controller the intake air temperature is detected and
the setting temp. is automatically set according to the intake air temperature.
• Operating frequency of compressor and indoor fan speed.
Temp. differences
32°C
≤
intake air temp.
26°C
≤
intake air temp. < 32°C
24°C
≤
intake air temp.< 26°C
18°C < intake air temp. < 24°C
intake air temp.
≤
18°C
Comp. Operating frequency
25°C
25°C
intake air temp. -1°C
intake air temp. -0.5°C
18°C
Cooling operation area
Dehumidification
operation area
After 3 min off
OFF instantly
Low
speed
speed
Low
speed
speed
After 5 min OFF
low speed
low speed
Setting
speed
speed
+1.0˚C
+0.5˚C
Setting temp. +0˚C
-1.0˚C
-2.0˚C
Operating frequency of compressor
Indoor fan speed
Step 3
Step 2
Step 1
-17-
6. Heating mode operation
• Operating frequency of compressor depend on the difference of the temperature
(= compressor off temp. - intake air temp.)
• Compressor off temp. = setting temp.+3.0°C
on temp. = setting temp.
• If compressor operates at some operation frequency, the operating frequency of compressor cannot be
changed within 30 seconds.
• Condition of compressor turned off
- When intake air temperature reaches +3°C above the setting temperature.
• Condition of indoor fan turned off
- While in compressor on:indoor pipe temp. < 26°C
off: indoor pipe temp. < 37°C
• While in defrost control, between the indoor and outdoor fans are turned off.
• Compressor 2minutes delay
• Compressor 2minutes delay
- After compressor off, the compressor can restart minimum 2 minutes later.
Temp. differences
over 3.0°C
2.5~3.0°C
2.0~2.49°C
1.5~1.99°C
1.0~1.49°C
0.5~0.99°C
0.0~0.49°C
Comp. Operating frequency
Step 19
Step 15
Step 13
Step 9
Step 5
Step 3
Step 1
[ The operating freq. step of comp]
[The targeting operating freq. of comp. each model]
Model
7K Btu Series
9K Btu Series
12K Btu Series
18K Btu Series
Comp. Operating frequency
42
47
56
67
80
86
90
42
56
68
82
95
103
110
41
49
57
64
72
76
83
41
47
53
58
67
71
76
Step 1
Step 3
Step 5
Step 9 Step 13(Fh) Step 15 Step 19
-18-
7. Fuzzy mode operation
• When any of operation mode is not selected like the moment of the power on or when the unit turned off, the
operation mode is selected.
• When determining the operation mode, the compressor, outdoor fan are off and only the indoor fan is operat-
ed for 15seconds, then an operation mode is selected according to.
Basis of determining operating mode
Outdoor temp.
over 24°C
21~24°C
18~21°C
below 18°C
Operating Mode
Cooling
Healthy Dehumidification
intake air temp.
≥
25°C …Dehumidification
intake air temp. < 25°C … Heating
Heating
7.1 Fuzzy operation for cooling
• According to the setting temperature selected by Fuzzy rule, the operating frequency of compressor is deter-
mined like cooling mode operation.
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.
• When the Fuzzy key(=setting temp. key) is input after the initial setting temperature is selected, the Fuzzy
key value and intake air temperature at that time are compared to select the setting temperature automatically
according to the fuzzy rule.
according to the fuzzy rule.
• While in Fuzzy operation, the air flow speed of the indoor fan is automatically operated by chaos logic.
at beginning
during opertion
Intake air temp.
over 26°C
18~26°C
below 18°C
18~30°C
below 18°C
over 30°C
Setting temp.
25°C
intake air temp. -05°C
18°C
Fuzzy rule
18°C Fuzzy rule
30°C Fuzzy rule
Fan speed
CHAOS airflow
Click on the first or last page to see other LS-J0761NL_NM_NN / LS-J0962NL_NM_NN / LS-L1261NL_NM_NN / LS-K1860NL_NM_NN_YL / LS-K181N-1 service manuals if exist.