Cooling Operation - Fujitsu ASYA07LGC 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 2°C higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is 2.5°C 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 Figure 1 based on the
fan speed mode and the outdoor temperature.
( Table 1 : Compressor Frequency Range )
AS*A07/ 09LGC
AS*A12LGC
AS*A14LGC
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outside air
temperature
A zone
34°C
B zone
30°C
C zone
19°C
D zone
10°C
E zone
0°C
F zone
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency
minimum maximum
frequency frequency
22Hz 76Hz
18Hz 80Hz
18Hz 70Hz
Outside air
temperature
07LGC
36°C
09LGC
32°C
21°C
12LGC
12°C
2°C
14LGC
maximum
frequency
79Hz
96Hz
80Hz
Hi
A zone 79Hz
B zone 79Hz
C zone 79Hz
D zone 52Hz
E zone 64Hz
F zone 64Hz
A zone 96Hz
B zone 96Hz
C zone 96Hz
D zone 57Hz
E zone 57Hz
F zone 57Hz
A zone 80Hz
B zone 80Hz
C zone 80Hz
D zone 54Hz
E zone 54Hz
F zone 54Hz
to Maximum Frequency .
05-01
Me Lo Quiet
61Hz 52Hz 37Hz
61Hz 52Hz 37Hz
61Hz 52Hz 38Hz
43Hz 37Hz 28Hz
55Hz 49Hz 36Hz
55Hz 49Hz 36Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
42Hz 36Hz 27Hz
42Hz 36Hz 27Hz
42Hz 36Hz 27Hz
49Hz 38Hz 27Hz
49Hz 38Hz 27Hz
49Hz 38Hz 27Hz
38Hz 30Hz 22Hz
38Hz 30Hz 22Hz
38Hz 30Hz 22Hz