Heating Operation; Dry Operation - Fujitsu AU G24LVLA Series Service Instruction

1-2. HEATING OPERATION

1-2-1 HEATING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit 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 3°C than a set temperature,
the compressor operation frequency will attain to maximum frequency.
* If the room temperature is higher 2.5°C than a set temperature, 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.
( Table 2 : Compressor Frequency Range )
AO*G24LALA

1-3. DRY OPERATION

1-3-1 INDOOR UNIT CONTROL
The compressor rotation frequency shall change according to set temperature and room
temperature variation which the room temperature sensor of the indoor unit has detected
as shown in the Fig. 2.
( Table 3 : Compressor frequency )
AO*G24LALA
( Fig.2 : Compressor Control based on Room Temperature )
Room
temperature
°C
Ts-1.5
minimum maximum
frequency frequency
18rps 120rps
Operating
frequency
34rps
Room
temperature
Compressor ON
Compressor OFF
°C
Ts-0.5
Ts : Setting temperature
01-02