Fujitsu AOUH18LPAS1, Service Manual

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1-3. Dry operation
The rotation number of compressor 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.
• Rotation number range of compressor
Unit: rps
Model name Outdoor temperature zone Operating frequency
ASUH18LPAS
X zone 22
J zone 16
Y zone 0
ASUH24LPAS
X zone 26
J zone 22
Y zone 0
• Compressor control based on room temperature
Ts+1°F
(Ts+0.5°C)
Ts-3°F
(Ts-1.5 °C)
Ts+3°F
(Ts+1.5 °C)
X zone
J zone
Y zone
Room temperature drops
Room temperature rises
Ts: Set temperature
Ts-1°F
(Ts-0.5°C)
1-4. Rotation number of compressor at normal start-up
Compressor frequency soon after starting is controlled as below.
Rotation number I
Rotation number II
Rotation number III
Rotation number IV
Rotation number V
Rotation number VI
Time 1 Time 2 Time 3 Time 4 Time 5 Time 6
Frequency
(rps)
I II III IV V VI
35 52 64 71 89 97
Time (sec)
1 2 3 4 5 6
60 140 170 200 350 410
1-3. Dry operation
- (04-4) -
1. Rotation number control of compressor
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS