Heating Operation - Fujitsu AIRSTAGE ASEH09KHCBN 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.
• →hen 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
ASEH09KHCBN
ASEH12KHCBN
ASEH14KHCBN
• Limit of maximum speed based on outdoor temperature
In heating operation, maximum rotation number is defined by outdoor temperature and fan mode.
Model name
ASEH09KHCBN
ASEH12KHCBN
ASEH14KHCBN
1-2. Heating operation
Minimum rotation number
Outdoor
temperature rises
14°C
-10°C
Outdoor
temperature
HIGH
zone
A zone 130
B zone 130
C zone 130
A zone 140
B zone 140
C zone 140
A zone 140
B zone 140
C zone 140
- (04-3) -
Maximum rotation number
8
8
Outdoor
temperature drops
C zone
12°C
B zone
-12°C
A zone
Indoor unit fan mode
MED— MED—
MED
HIGH LOW
111 87
111 87
120 102
111 94
111 94
120 111
111 94
111 94
120 111
Unit: rps
130
140
Unit: rps
LOW QUIET
68 54 32
68 54 36
94 87 74
74 58 34
74 58 39
102 94 80
80 63 36
80 63 46
102 94 80
1. Rotation number control of compressor