Cooling Operation - Fujitsu AS G09LMCB 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 )
AO*G09LMCBN
AO*G12LMCBN
AO*G14LMCBN
( 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 to
Minimum Maximum
frequency frequency
18rps 64rps
18rps 96rps
10rps 80rps
( Table 2 : Limit of maximum speed based on outdoor temperature )
Outdoor
temperature rises
36°C
32°C
21°C
12°C
2°C
-2.5°C of the setting temperature,
Outdoor
temp. zone
A zone
AO*G09LMCBN
B zone
C zone
D zone
E zone
F zone
AO*G12LMCBN A zone
B zone
C zone
D zone
E zone
F zone
AO*G14LMCBN A zone
B zone
C zone
D zone
E zone
F zone
01-01
Indoor fan mode
Hi Me Lo Quiet
64rps 50rps 42rps 30rps
64rps 50rps 42rps 30rps
64rps 50rps 42rps 30rps
52rps 45rps 40rps 29rps
52rps 45rps 40rps 29rps
52rps 45rps 40rps 29rps
96rps 61rps 51rps 33rps
96rps 61rps 51rps 33rps
96rps 61rps 51rps 33rps
68rps 48rps 36rps 27rps
68rps 48rps 36rps 27rps
68rps 48rps 36rps 27rps
80rps 51rps 43rps 26rps
80rps 51rps 43rps 26rps
80rps 51rps 43rps 26rps
59rps 40rps 29rps 20rps
59rps 40rps 29rps 20rps
59rps 40rps 29rps 20rps