Description Of Each Control Operation - Fujitsu AU*A12LALN Service Instruction

5. DESCRIPTION OF EACH CONTROL OPERATION

5-1. COOLING OPERATION
5-1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit 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.
( Table 1 : Compressor Frequency Range )
AU*A12LALN
AU*A14LALN
AU*A18LALN
AU*A24LALN
AU*A36LATN
AU*A45LATN
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Fan speed mode
AU*A12LALN A zone
B zone
C zone
D zone
E zone
F zone
AU*A14LALN A zone
B zone
C zone
D zone
E zone
F zone
AU*A18LALN A zone
B zone
C zone
D zone
E zone
F zone
minimum maximum
frequency frequency
18Hz 113Hz
18Hz 113Hz
18Hz 113Hz
18Hz 113Hz
18Hz 77Hz
18Hz 77Hz
Outdoor air
temperature
34°C
30°C
19°C
10°C
0°C
When the room
temperature drops
Hi Me Lo
113Hz 66Hz 54Hz
113Hz 66Hz 54Hz
80Hz 54Hz 45Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
113Hz 66Hz 54Hz
113Hz 66Hz 54Hz
80Hz 54Hz 45Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
113Hz 66Hz 54Hz
113Hz 66Hz 54Hz
80Hz 54Hz 45Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
A zone
B zone
C zone
D zone
E zone
F zone
When the room
temperature rises
Fan speed mode
Qu
34Hz AU*A24LALN A zone
34Hz B zone
34Hz C zone
24Hz D zone
24Hz E zone
24Hz F zone
34Hz AU*A36LATN A zone
34Hz B zone
34Hz C zone
24Hz D zone
24Hz E zone
24Hz F zone
34Hz AU*A45LATN A zone
34Hz B zone
34Hz C zone
24Hz D zone
24Hz E zone
24Hz F zone
05-01
36°C
32°C
21°C
12°C
2°C
Hi Me
113Hz 66Hz 54Hz
113Hz 66Hz 54Hz
80Hz 54Hz 45Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
54Hz 45Hz 38Hz
77Hz 48Hz 41Hz
77Hz 48Hz 41Hz
55Hz 41Hz 37Hz
41Hz 37Hz 33Hz
41Hz 37Hz 33Hz
41Hz 37Hz 33Hz
77Hz 48Hz 41Hz
77Hz 48Hz 41Hz
55Hz 41Hz 37Hz
41Hz 37Hz 33Hz
41Hz 37Hz 33Hz
41Hz 37Hz 33Hz
Lo Qu
34Hz
34Hz
34Hz
24Hz
24Hz
24Hz
31Hz
31Hz
31Hz
25Hz
25Hz
25Hz
31Hz
31Hz
31Hz
25Hz
25Hz
25Hz