1. COOLING OPERATION
1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is 2 C higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is 2.5 C lower than a set temperature, the compressor will be
stopped.
* When the room temperature is between +2 C to -2.5 C of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
However, the maximum frequency is limited in the range shown in Figure 1 based on the
fan speed mode and the outdoor temperature.
minimum
frequency
maximum
frequency
maximum
frequency
AS*9LSACW 18Hz 60Hz 80Hz
AS*12LSACW 18Hz 80Hz 96Hz
AS*9LSBCW 18Hz 61Hz 80Hz
AS*12LSBCW 18Hz 80Hz 96Hz
AS*14LSBCW 18Hz 70Hz 90Hz
AS*18LSBCW 18Hz 70Hz 90Hz
Outside air Outside air
temperature temperature
36 C
A zone
34 C
32 C
B zone
30 C
21 C
C zone
19 C
D zone
Hi Me Lo Quiet
A zone 80Hz 51Hz 45Hz 33Hz
B zone 80Hz 51Hz 45Hz 33Hz
C zone 80Hz 51Hz 45Hz 33Hz
9LSACW
D zone 51Hz 39Hz 33Hz 27Hz
A zone 96Hz 60Hz 51Hz 33Hz
B zone 96Hz 60Hz 51Hz 33Hz
C zone 80Hz 60Hz 51Hz 33Hz
12LSACW
D zone 51Hz 42Hz 36Hz 27Hz
A zone 80Hz 61Hz 51Hz 33Hz
B zone 80Hz 61Hz 51Hz 33Hz
C zone 80Hz 61Hz 51Hz 33Hz
9LSBCW
D zone 51Hz 42Hz 36Hz 22Hz
A zone 96Hz 61Hz 51Hz 33Hz
B zone 96Hz 61Hz 51Hz 33Hz
C zone 96Hz 61Hz 51Hz 33Hz
12LSBCW
D zone 51Hz 42Hz 36Hz 22Hz
A zone 90Hz 45Hz 42Hz 30Hz
B zone 90Hz 45Hz 42Hz 30Hz
C zone 90Hz 45Hz 42Hz 30Hz
14LSBCW
D zone 49Hz 38Hz 34Hz 24Hz
A zone 90Hz 45Hz 42Hz 30Hz
B zone 90Hz 45Hz 42Hz 30Hz
C zone 90Hz 45Hz 42Hz 30Hz
18LSBCW
D zone 49Hz 38Hz 34Hz 24Hz
( Table 1 : Compressor Frequency Range )
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency to Maximum Frequency .
The room temperature is controlled 1 C lower than the setting temperature for 40 minutes
after starting the operation.
After 40 minutes, it is controlled based on the normal setting temperature.
05-01