Cooling Operation - Fujitsu ARCG040LSTA Service Instruction

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
frequency will attain to maximum performance.
* If the room temperature is some degrees lower than a set temperature,
the compressor will be stopped.
* When the room temperature is between
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 indoor
fan mode and the outdoor temperature.
( Table 1 : Compressor frequency range )
AOCG040LBTA
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 )
Outdoor
temperature
A zone
34°C
B zone
30°C
C zone
19°C
D zone
10°C
E zone
0°C
F zone
2°C higher than a set temperature, the compressor operation
+2°C to
Minimum Maximum
frequency frequency
18rps 68rps
( Table 2 : Limit of maximum speed based on outdoor temperature )
Outdoor
temperature
36°C
32°C
21°C
12°C
2°C
01-01
-2.5°C of the setting temperature,
Maximum
frequency
99rps
to Maximum Frequency .
Outdoor
temp. zone
AOCG040LBTA A zone
B zone
C zone
D zone
E zone
F zone
Indoor fan mode
Hi Me Lo Quiet
99rps 59rps 52rps 30rps
99rps 59rps 52rps 30rps
72rps 52rps 41rps 30rps
52rps 41rps 34rps 21rps
63rps 34rps 27rps 19rps
63rps 34rps 27rps 19rps