Heating Operation - Fujitsu As*A09Lkc Service Instructions Manual

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.
* When the room temperature is between +2.5°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 )
AS*A09LKC
AS*A12LKC
( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )
Outside air
temperature
C zone
17°C
B zone
12°C
A zone
5°C
AA zone
* 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.
minimum maximum
frequency frequency
22Hz 99Hz
18Hz 130Hz
Outside air
temperature
19°C
14°C
7°C
Hi
09LKC AA zone 99Hz
A zone 99Hz
B zone 99Hz
C zone 99Hz
AA zone
130Hz
12LKC
A zone
130Hz
B zone 130Hz
130Hz
C zone
01-02
Me+ Me Lo
99Hz 96Hz 79Hz
99Hz 96Hz 79Hz
99Hz 96Hz 79Hz
99Hz 96Hz 79Hz
130Hz 96Hz 80Hz
130Hz 96Hz 80Hz
130Hz 96Hz 80Hz
130Hz 96Hz 80Hz
Quiet
67Hz
67Hz
56Hz
46Hz
68Hz
68Hz
54Hz
45Hz