Heating Operation; Dry Operation - Fujitsu ARCG040LSTA 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
frequency will attain to maximum performance.
* If the room temperature is some degrees higher than a set temperature,
the compressor will be stopped.
* When the room temperature is between
the compressor frequency is controlled within the range shown in Table 3.
( Table 3 : Compressor frequency range )
AOCG040LBTA

3. DRY OPERATION

3-1 INDOOR UNIT CONTROL
The compressor 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 Table 4.
However, after the compressor is driven, the indoor unit shall run at operation frequency of
52rps for 60 seconds.
( Table 4 : Compressor frequency in Dry mode)
AOCG040LBTA
( Fig.2 : Compressor control based on room temperature )
Room temperature
Ts+0.5°C
Ts -1.5°C
3°C
+2.5°C
Minimum Maximum
frequency frequency
16rps
Operating
frequency
X zone 30rps
J zone
30rps
Y zone 0rps
Room temperature
X zone
J zone
Y zone
than a set temperature, the compressor operation
to -3°C of the setting temperature,
140rps
Ts+1.5°C
Ts -0.5°C
01-02