Fujitsu AOYR24LCC, Service Instructions Manual

Page: 19 / 116

2. HEATING OPERATION
2-1 HEATING 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 lower by 3 C than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is higher 2.5 C than a set temperatire, the compressor will be
stopped.
minimum
frequency
maximum
frequency
ASYA24LCC 15Hz 130Hz
ASYA30LCC 21Hz 120Hz
Outside air Outside air
temperature temperature
19 C
C zone
17 C
14 C
B zone
12 C
A zone
Hi Me+ Lo Quiet
A zone 130Hz 130Hz 75Hz 62Hz
B zone 130Hz 130Hz 75Hz 62Hz
24LCC
C zone 130Hz 130Hz 57Hz 62Hz
* When the room temperature is b2 C to -3 C of the setting temperature,
the compressor frequency is controlled within the range shown in Table2.
However, the maximum frequency is limited in the range shown in Figure 2 based on the
fan speed mode and the outdoor temperature.
( Table 2 : Compressor Frequency Range )
( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )
* The room temperature is controlled 2 C higher than the setting temperature for 60 minutes
after starting the operation.
After 60 minutes, it is controlled based on the normal setting temperature.
05-02
Me
101Hz
101Hz
101Hz
A zone 120Hz 120Hz 54Hz 39Hz
B zone 120Hz 120Hz 54Hz 45Hz
30LCC
C zone 120Hz 120Hz 54Hz 45Hz
73Hz
73Hz
73Hz