Heating Operation - Fujitsu ASYG07KGTF Service Manual

1-2. Heating operation

A sensor (room temperature thermistor) built in indoor unit body will usually perceive difference or
variation between setting temperature and present room temperature, and controls operation rota-
tion number of compressor.
• If the room temperature is 6.0°C lower than a set temperature, the operation rotation number of
compressor will attain to maximum performance.
• If the room temperature is 1.0°C higher than a set temperature, the compressor will be stopped.
• When the room temperature is within the range of +1.0°C to -6.0°C of the setting temperature, the
rotation number of compressor is controlled within the range shown below.
• Rotation number range of compressor
Model name
ASYG07KGTF
ASYG09KGTF
ASYG12KGTF
ASYG14KGTF
• Limit of maximum speed based on outdoor temperature
In heating operation, maximum rotation number is defined by outdoor temperature and fan mode.
Model name
ASYG07KGTF
ASYG09KGTF
ASYG12KGTF
ASYG14KGTF
1-2. Heating operation
Minimum rotation number
Outdoor
temperature rises
19°C
14°C
Outdoor
temperature zone
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
- (04-3) -
12
Outdoor
temperature drops
C zone
17°C
B zone
12°C
A zone
Indoor unit fan mode
HIGH MED
110 110
96 96
77 77
110 110
103 103
83 83
110 110
110 110
89 89
110 110
110 110
89 89
Unit: rps
Maximum rotation number
110
Unit: rps
LOW QUIET
77 67
72 62
62 40
77 67
72 62
62 40
77 67
72 62
62 40
89 72
83 67
72 36
1. Rotation number control of compressor