Fujitsu AO*12LFBC, Service Instructions Manual

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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
AS*9LSACW 18Hz 130Hz
AS*12LSACW 18Hz 130Hz
AS*9LSBCW 18Hz 130Hz
AS*12LSBCW 18Hz 130Hz
AS*14LSBCW 18Hz 119Hz
AS*18LSBCW 18Hz 119Hz
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 92Hz 80Hz 68Hz
B zone 130Hz 80Hz 60Hz 54Hz
9LSACW
C zone 96Hz 68Hz 54Hz 51Hz
A zone 130Hz 96Hz 80Hz 68Hz
B zone 130Hz 96Hz 64Hz 57Hz
12LSACW
C zone 96Hz 96Hz 64Hz 54Hz
A zone 130Hz 96Hz 80Hz 68Hz
B zone 130Hz 96Hz 80Hz 54Hz
9LSBCW
C zone 130Hz 96Hz 80Hz 45Hz
A zone 130Hz 96Hz 80Hz 68Hz
B zone 130Hz 96Hz 80Hz 54Hz
12LSBCW
C zone 130Hz 96Hz 80Hz 45Hz
A zone 119Hz 90Hz 70Hz 58Hz
B zone 119Hz 90Hz 70Hz 58Hz
14LSBCW
C zone 119Hz 90Hz 70Hz 58Hz
A zone 119Hz 90Hz 70Hz 58Hz
B zone 119Hz 90Hz 70Hz 58Hz
18LSBCW
C zone 119Hz 90Hz 70Hz 58Hz
* 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