Rotation Number Control Of Compressor; Cooling Operation - Fujitsu General ASHH30KMTB Service Manual

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 6.0°C higher than a set temperature, the operation rotation number of
compressor will attain to maximum performance.
• If the room temperature is 1.0°C lower than a set temperature, the compressor will be stopped.
• When the room temperature is within the range of +6.0°C to -1.0°C of the setting temperature, the
rotation number of compressor is controlled within the range shown in the table below. However,
the maximum rotation number is limited in the range shown in the figure below based on the in-
door fan mode and the outdoor temperature.
• Rotation number range of compressor
Model name
ASHH30KMTB
ASHH36KMTB
• Limit of maximum speed based on outdoor temperature
Model name
ASHH30KMTB
ASHH36KMTB
1-1. Cooling operation
Minimum frequency
Outdoor
temperature drops
A zone
34°C
B zone
30°C
C zone
19°C
D zone
10°C
E zone
0°C
F zone
Outdoor
temperature
HIGH
zone
A zone 110
B zone 110
C zone 100
D zone 67
E zone 67
F zone 67
15
Outdoor
temperature rises
36°C
32°C
21°C
12°C
2°C
Indoor unit fan mode
MED
72
72
60
55
55
55
- (04-1) -
Unit: rps
Maximum frequency
110
Unit: rps
LOW QUIET
60 55
60 55
57 55
49 32
49 32
49 32
1. Rotation number control of compressor