Fujitsu AOCG040LBTA, Service Instruction

Page: 4 / 67

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