Heating Operation - Fujitsu AS*G09KXCA Series Service Instruction

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 6.0°C than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is 1.0°C higher than a set temperature,
the compressor will be stopped.
* When the room temperature is between +1.0°C to -6.0°C of the setting temperature,
the compressor frequency is controlled within the range shown in Table2.
( Table 2 : Compressor Frequency Range )
minimum
frequency
15rps
3. DRY OPERATION
3-1 INDOOR UNIT CONTROL
The compressor rotation frequency shall change according to the temperature, set temperature,
and room temperature variation which the room temperature sensor of the indoor unit body has
detected as shown in the Table3.
( Table3 : Compressor frequency )
Operating
frequency
X zone 22rps
J zone
15rps
Y zone 0rps
( Fig.2 : Compressor Control based on Room Temperature )
Room
temperature drops
X zone
Ts+0.5°C
J zone
Ts -1.5°C
Y zone
maximum
frequency
128rps
Room
temperature rises
Ts+1.5°C
Ts -0.5°C
01-02