Cooling Operation - Fujitsu AGU12RLF Service Instruction

1. COOLING OPERATION

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 4°F(2°C) higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is 5°F(2.5°C) lower than a set temperature, the compressor will be
stopped.
* When the room temperature is between +4°F(+2°C) to -5°F(-2.5°C) of the setting temperature,
the compressor frequency is controlled within the range shown in Table 1.
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 )
AOU9RLFF
AOU12RLFF
AOU15RLFF
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency
( Fig.1 : Outdoor temperature zone )
Outside air
temperature
A zone
93°F
(34°C)
B zone
86°F
(30°C)
C zone
66°F
(19°C)
D zone
50°F
(10°C)
E zone
32°F
(0°C)
F zone
Minimum
Air flow
frequency
Upper & Lower
10rps
Upper
Upper & Lower
12rps
Upper
Outside air
temperature
97°F
(36°C)
90°F
(32°C)
70°F
(21°C)
54°F
(12°C)
36°F
(2°C)
Maximum Maximum
frequency frequency
76rps 57rps
56rps
91rps
to Maximum Frequency .
( Table 2 : Limit of maximum speed based on outdoor temperature )
AOU9/12RLFF
Outdoor
temp. zone
A zone
Upper & Lower
air flow
B zone
C zone
D zone
E zone
F zone
A zone
Upper air flow
B zone
C zone
D zone
E zone
F zone
AOU15RLFF
Outdoor
temp. zone
A zone
Upper & Lower
air flow B zone
C zone
D zone
E zone
F zone
A zone
Upper air flow
B zone
C zone
D zone
E zone
F zone
01-01
Indoor fan mode
Hi Me Lo Quiet
76rps 45rps 37rps 29rps
76rps 45rps 37rps 29rps
76rps 45rps 37rps 26rps
43rps 35rps 26rps 20rps
51rps 37rps 31rps 22rps
51rps 37rps 31rps 22rps
76rps 45rps 37rps 29rps
76rps 45rps 37rps 29rps
76rps 45rps 37rps 26rps
43rps 35rps 26rps 20rps
51rps 37rps 31rps 22rps
51rps 37rps 31rps 22rps
Indoor fan mode
Hi Me Lo Quiet
91rps 44rps 34rps 24rps
91rps 44rps 34rps 24rps
72rps 44rps 34rps 24rps
52rps 30rps 21rps 18rps
62rps 34rps 27rps 19rps
62rps 34rps 27rps 19rps
91rps 44rps 34rps 24rps
91rps 44rps 34rps 24rps
72rps 44rps 34rps 24rps
52rps 30rps 21rps 18rps
62rps 34rps 27rps 19rps
62rps 34rps 27rps 19rps