Heating Operation; Dry Operation - Fujitsu AS G09LLTB-T 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*G09LLTB-T
AO*G12LLTB-T
( Table 4 : Limit of maximum speed based on outdoor temperature )
AO*G09LLTB-T
AO*G12LLTB-T

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)
09LLTB-T X zone
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
16rps 109rps
Indoor fan mode
Hi Me
120rps 120rps 80rps
109rps 109rps
73rps
Operating
frequency
30rps
X zone
12LLTB-T
25rps J zone
0rps Y zone
When the room
temperature rises
Ts+1.5°C
Ts
to -3°C of the setting temperature,
Lo Quiet Auto
68rps
120rps
109rps
62rps
Operating
frequency
30rps
23rps
0rps
-0.5°C
01-02