Fujitsu AOUH12LMBH1 - 1. Rotation number control of compressor

1. Rotation number control of compressor
1-1. Cooling 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
rotation number of the compressor.
• If the room temperature is 11°F (6.0°C) higher than a set temperature, the operation rotation num-
ber of compressor will attain to maximum performance.
• If the room temperature is 2°F (1.0°C) lower than a set temperature, the compressor will be
stopped.
• When the room temperature is within the range of +11°F (6.0°C) to -2°F (1.0°C) of the setting tem-
perature, the rotation number of compressor is controlled within the range shown in the table be-
low. However, the maximum rotation number is limited in the range shown in the figure below
based on the indoor fan mode and the outdoor temperature.
• Rotation number range of compressor
Unit: rps
Model name Minimum rotation number Maximum rotation number
ASUH09LMAS
ASUH12LMAS
12 89
• Limit of maximum speed based on outdoor temperature
A zone
B zone
C zone
D zone
E zone
F zone
Outdoor
temperature drops
Outdoor
temperature rises
93.2°F
(34°C)
96.8°F
(36°C)
86.0°F
(30°C)
66.2°F
(19°C)
50.0°F
(10°C)
32.0°F
(0°C)
89.6°F
(32°C)
69.8°F
(21°C)
53.6°F
(12°C)
35.6°F
(2°C)
Unit: rps
Model name
Outdoor
temperature zone
Indoor unit fan mode
HIGH MED LOW QUIET
ASUH09LMAS
ASUH12LMAS
A zone 89 54 38 26
B zone 89 54 38 26
C zone 89 54 38 26
D zone 62 44 38 26
E zone 62 44 38 26
F zone 62 44 38 26
1-1. Cooling operation - (04-1) - 1. Rotation number control of compressor
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS