Heating Operation; Dry Operation - Fujitsu AG G12LVCA 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.
( Table 3 : Compressor frequency range )
AO*G09LVCA
AO*G12LVCA
AO*G14LVLA

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 4.
However, the compressor frequency after the start-up is 56rps for 80seconds (09/12L),
40rps for 60seconds (14L).
( Table 4 : Compressor frequency in Dry mode)
AO*G09LVCA
AO*G12LVCA
AO*G14LVLA
Refer to Fig.1
( 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
3°C than a set temperature, the compressor operation
+2.5°C
Minimum
Air flow
frequency
Upper & Lower
18rps
Upper
Upper & Lower
18rps
Upper
Indoor zone
Outdoor
zone
X zone J zone
A, B, C 33rps 25rps
27rps 25rps
D, E, F
A, B, C
21rps 18rps
D, E, F
Room
temperature rises
Ts+1.5°C
Ts -0.5°C
to -3°C of the setting temperature,
Maximum
frequency
130rps
119rps
Y zone
0rps
0rps
0rps
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