Cooling Operation - Fujitsu ASYG07LMCE Service Manual

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 2°C higher than a set temperature, the compressor operation
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 +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.
( Table 1 : Compressor frequency range )
Model
07/09
12/14
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
Minimum Maximum
frequency frequency
22rps 76rps
18rps 80rps
Outdoor
temperature rises
36°C
32°C
21°C
12°C
2°C
Maximum
frequency
79rps
96rps
to Maximum Frequency .
( Table 2 : Limit of maximum speed based on outdoor temperature )
Outdoor
Model
temp. zone
A zone
B zone
C zone
07/09
D zone
E zone
F zone
A zone
B zone
C zone
12
D zone
E zone
F zone
A zone
B zone
C zone
14
D zone
E zone
F zone
01-01
Indoor fan mode
Hi Me Lo Quiet
79rps 61rps 52rps 37rps
79rps 61rps 52rps 37rps
79rps 61rps 52rps 37rps
64rps 55rps 49rps 36rps
64rps 55rps 49rps 36rps
64rps 55rps 49rps 36rps
96rps 61rps 51rps
96rps 61rps 51rps
96rps 61rps 51rps
68rps 54rps 48rps
68rps 54rps 48rps
68rps 54rps 48rps
96rps 61rps 51rps
96rps 61rps 51rps
96rps 61rps 51rps
73rps 48ps 36rps
73ps 48rps 36rps
73rps 48rps 36rps
33rps
33rps
33rps
33rps
33rps
33rps
33rps
33rps
33rps
27rps
27rps
27rps