Dry Operation; Compressor Frequency At Normal Start-Up - Fujitsu ASTG30KMTC 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
ASTG30KMTC
ASTG34KMTC
• Compressor control based on room temperature

1-4. Compressor frequency at normal start-up

¢ Model: AOTG30KMTC
Compressor frequency soon after starting is controlled as below.
Frequency IV
Frequency III
Frequency II
Frequency I
• Normal operation
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
I
27
1
60
X zone
Y zone
Z zone
X zone
Y zone
Z zone
Room temperature rises
Ts: Set temperature
Time 2 Time 3
II
42
2
120
- (04-3) -
Unit: rps
Operating frequency
27
16
0
29
18
0
Ts+1.5°C
Ts-0.5°C
Time 4
III IV
54 65
3 4
180 240
1. Compressor frequency control