LG LS-J0762NM, Service Manual, Page: 14 / 82

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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 Comp. Operating frequency
over 3.0°C Step 7
over 2.5°C Step 6
2.0~2.49°C Step 5
1.5~1.99°C Step 4
1.0~1.49°C Step 3
0.5~0.99°C Step 2
0.0~0.49°C Step 1
[The operating freq. step of comp.]
[The targeting operating freq. of comp. each model]
Model
7K Series(AC) 35 41 45 56 64 68 78
9K Series(AC) 35 48 62 72 83 90 99
12K Series(AC) 30 40 45 55 61 67 72
9K Series(DC) 15 22 32 40 51 54 58
12K Series(DC) 15 28 40 53 66 71 76
Comp. Operating frequency
Step 1 Step 2 Step 3 Step 4 Step 5(Fc) Step 6 Step 7