Heating Operation; Dry Operation - Fujitsu AS G09LLCA Series Service Instruction

2. HEATING OPERATION

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.
However, the maximum frequency is limited shown in Table 4 based on the fan mode.
( Table 3 : Compressor frequency range )
AO*G09LLCA
AO*G12LLCA
( Table 4 : Limit of maximum speed based on outdoor temperature )
AO*G09LLCA
AO*G12LLCA

3. DRY OPERATION

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 5.
However, after the compressor is driven, the indoor unit shall run at operation frequency of
61rps for 60 seconds.
( Table 5 : Compressor frequency in Dry mode)
X zone
09LLCA
J zone
Y zone
( Fig.2 : Compressor control based on room temperature )
When the room
temperature drops
X zone
Ts+0.5°C
J zone
Ts -1.5°C
Y zone
3°C than a set temperature, the compressor operation
+2.5°C
Minimum Maximum
frequency frequency
18rps 120rps
Indoor fan mode
Hi Me
120rps 120rps 80rps
Operating
frequency
30rps
12LLCA
25rps
0rps
When the room
temperature rises
Ts+1.5°C
Ts
to -3°C of the setting temperature,
Lo Quiet Auto
68rps 120rps
Operating
frequency
X zone 33rps
J zone
25rps
Y zone 0rps
-0.5°C
01-02