Cooling Operation - Fujitsu ASYA07LCC 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 )
ASYA07LCC
ASYA09LCC
ASYA12LCC
ASYB09LDC
ASYB12LDC
ASYA14LCC
ASYA18LCC
( 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
The room temperature is controlled 1°C lower than the setting temperature for 40 minutes
after starting the operation.
After 40 minutes, it is controlled based on the normal setting temperature.
minimum maximum
frequency frequency
18Hz 61Hz
18Hz 61Hz
18Hz 80Hz
18Hz 61Hz
18Hz 80Hz
18Hz 70Hz
18Hz 70Hz
07LCC
09LCC
Outside air
temperature
36°C
12LCC
32°C
21°C
09LDC
12°C
2°C
12LDC
14LCC
18LCC
maximum
frequency
80Hz
80Hz
96Hz
80Hz
96Hz
90Hz
90Hz
Hi
A zone 80Hz
B zone 80Hz
C zone 80Hz
D zone 51Hz
E zone 51Hz
F zone 51Hz
A zone 96Hz
B zone 96Hz
C zone 96Hz
D zone 51Hz
E zone 51Hz
F zone 51Hz
A zone 80Hz
B zone
80Hz
C zone
80Hz
D zone
51Hz
E zone 51Hz
F zone 51Hz
A zone 96Hz
B zone 96Hz
C zone 96Hz
D zone
57Hz
E zone 57Hz
F zone 57Hz
A zone 90Hz
B zone
90Hz
C zone 90Hz
D zone
58Hz
E zone 58Hz
F zone 58Hz
to Maximum Frequency .
05-01
Me Lo Quiet
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
42Hz 36Hz 21Hz
42Hz 36Hz 21Hz
42Hz 36Hz 21Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
42Hz 36Hz 22Hz
42Hz 36Hz 22Hz
42Hz 36Hz 22Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
42Hz 36Hz 27Hz
42Hz 36Hz 27Hz
42Hz 36Hz 27Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
61Hz 51Hz 33Hz
42Hz 36Hz 27Hz
42Hz 36Hz 27Hz
42Hz 36Hz 27Hz
45Hz 42Hz 30Hz
45Hz 42Hz 30Hz
45Hz 42Hz 30Hz
38Hz 34Hz 24Hz
38Hz 34Hz 24Hz
38Hz 34Hz 24Hz