Dry Operation; Compressor Frequency At Normal Start-Up - Fujitsu ASUG09LZAS Service Manual

1-3. Dry operation

The compressor rotation frequency shall change according to the temperature, set temperature, and
room temperature variation which the room temperature sensor of the indoor unit has detected as
shown in the table below.
Zone is defined by set temperature and room temperature.
• Compressor frequency range
Model name
ASUG09LZAS
ASUG12LZAS
ASUG15LZAS
• Compressor control based on room temperature

1-4. Compressor frequency at normal start-up

¢ Models: AOUG09LZAS1, AOUG12LZAS1, and AOUG15LZAS1
Compressor frequency soon after starting is controlled as below.
Frequency VI
Frequency V
Frequency IV
Frequency III
Frequency II
Frequency I
Frequency
(rps)
Time (sec)
1-3. Dry operation
Outdoor temperature zone
Room temperature drops
X zone
Ts+0.5°C
J zone
Ts -1.5°C
Y zone
Time 1 Time 2
I II
35 52
1 2
60 140
X zone
J zone
Y zone
X zone
J zone
Y zone
Room temperature rises
Ts: Set temperature
Time 3 Time 4
III IV
64 71
3 4
170 200
- (04-4) -
Unit: rps
Operating frequency
24
18
0
22
16
0
Ts+1.5°C
Ts-0.5°C
Time 5 Time 6
V
89
5
350 410
1. Compressor frequency control
VI
97
6