Cooling Operation; Cooling Capacity Control - Fujitsu AB*30LBAG series Service Instruction

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 between +2 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.
( Table 1 : Compressor Frequency Range )
AB*30LBAG
AB*36LBAG
AB*45LBAG
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outdoor air
temperature
31°C
19°C
11°C
minimum maximum
frequency frequency
20Hz 90Hz
20Hz 90Hz
20Hz 92Hz
AB*30LBAG
A zone
B zone
AB*36LBAG
C zone
AB*45LBAG
D zone
Fan speed mode
Hi
A zone 90Hz
B zone 70Hz
C zone 65Hz
D zone 55Hz
A zone 90Hz
B zone
75Hz
C zone
70Hz
D zone
65Hz
92Hz
A zone
72Hz
B zone
60Hz
C zone
60Hz
D zone
05-01
Me Lo
70Hz 70Hz
65Hz 65Hz
55Hz 55Hz
45Hz 45Hz
75Hz 75Hz
70Hz 70Hz
65Hz 65Hz
55Hz
55Hz
72Hz 72Hz
60Hz
60Hz
60Hz 60Hz
53Hz 53Hz