Cooling Operation - Fujitsu AG G12LVCB Series 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
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 )
AG*G09LVCB
AG*G12LVCB
AG*G14LVCB
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 drops
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
Minimum
Air flow
frequency
Upper & Lower
15rps
Upper
Upper & Lower 12rps
12rps
Upper
Outdoor
temperature rises
36°C
32°C
21°C
12°C
2°C
to -2.5°C of the setting temperature,
Maximum Maximum
frequency frequency
67rps 80rps
81rps
63rps
52rps 81rps
to Maximum Frequency .
( Table 2 : Limit of maximum speed based on outdoor temperature )
AG*G09/ 12LVCB
Outdoor
temp. zone
A zone
Upper & Lower
air flow B zone
C zone
D zone
E zone
F zone
Upper air flow
AG*G14LVCB
Outdoor
temp. zone
A zone
Upper & Lower
air flow B zone
C zone
D zone
E zone
F zone
Upper air flow
01-01
Indoor fan mode
Hi Me
80rps 51rps
80rps 51rps
80rps 51rps
54rps 35rps
54rps 35rps
54rps 35rps
A zone 80rps 51rps
B zone
80rps 51rps
C zone 80rps 51rps
D zone 54rps 31rps
E zone 54rps 31rps
F zone 54rps 31rps
Indoor fan mode
Hi Me
81rps 41rps
81rps 41rps
81rps 41rps
52rps 34rps
52rps 34rps
52rps 34rps
A zone
81rps 41rps
B zone 81rps 41rps
C zone
81rps 41rps
D zone 52rps 30rps
E zone
48rps 30rps
F zone 48rps 30rps
Lo Quiet
43rps 26rps
43rps 26rps
43rps 26rps
29rps 20rps
29rps 20rps
29rps 20rps
37rps 26rps
37rps 26rps
37rps 26rps
29rps 20rps
29rps 20rps
29rps 20rps
Lo Quiet
38rps 27rps
38rps 27rps
38rps 27rps
30rps 21rps
30rps 21rps
30rps 21rps
30rps 21rps
30rps 19rps
30rps 19rps
27rps 19rps
27rps 19rps
27rps 19rps