Fujitsu AB*30LBAG series, Service Instruction

Page: 19 / 126

5-1. COOLING OPERATION
5-1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit 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 degC higher than a set temperature,
the compressor operation frequency will attain to maximum performance.
* If the room temperature is 2 degC lower than a set temperature, the compressor
will be stopped.
* When the room temperature is b2 degC to -2 degC 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.
minimum
frequency
maximum
frequency
20Hz
20Hz
20Hz
90Hz
90Hz
92Hz
AB*30LBAG
AB*36LBAG
AB*45LBAG
Outdoor air
temperature
A zone
31°C
B zone
C zone
D zone
Hi Me Lo
A zone 90Hz
70Hz
65Hz
55Hz
90Hz
92Hz
72Hz
60Hz
60Hz
75Hz
70Hz
65Hz
45Hz
75Hz
70Hz
65Hz
55Hz
72Hz
60Hz
45Hz
75Hz
70Hz
60Hz 60Hz
53Hz 53Hz
65Hz
70Hz
65Hz
70Hz
55Hz
72Hz
60Hz
65Hz
55Hz 55Hz
B zone
C zone
D zone
A zone
B zone
C zone
AB*30LBAG
D zone
A zone
B zone
C zone
AB*36LBAG
D zone
AB*45LBAG
19°C
11°C
( Table 1 : Compressor Frequency Range )
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
05-01
Fan speed mode