Cooling Operation - Fujitsu ARYG72LHTA Service Instruction

1-2. COOLING OPERATION

1-2-1 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 6.0°C higher than a set temperature,
the compressor operation frequency will attain to maximum performance.
* If the room temperature is 1.0 °C lower than a set temperature, the compressor
will be stopped.
* When the room temperature is between +6.0°C to -1.0°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 Fig.1 based on the
fan speed mode and the outdoor temperature.
( Table 1 : Compressor Frequency Range )
ARYG72LHTA
ARYG90LHTA
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outdoor air
temperature
34°C
30°C
19°C
10°C
0°C
When the room
temperature drops
minimum maximum
frequency frequency
15rps 81rps
15rps 90rps
When the room
temperature rises
A zone
36°C
B zone
32°C
C zone
21°C
D zone
12°C
E zone
2°C
F zone
Fan speed mode
A zone
B zone
ARYG72LHTA
C zone
D-F zone
A zone
B zone
ARYG90LHTA
C zone
D-F zone
01-02
Hi Me Lo
78rps 55rps 53rps
78rps 55rps 53rps
59rps 53rps 45rps
53rps 45rps 43rps
84rps 60rps 55rps
60rps 55rps
84rps
66rps 55rps 46rps
55rps 46rps 43rps
Qu
43rps
43rps
38rps
33rps
43rps
43rps
38rps
33rps