Cooling Operation; Cooling Capacity Control - Fujitsu ARG60LHTA Service Instruction

1. DESCRIPTION OF EACH CONTROL OPERATION

1-1. COOLING OPERATION

1-1-1 COOLING CAPACITY CONTROL

A sensor (room temperature thermistor) built in the indoor unit will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is 2°C higher than a set temperature,
the compressor operation frequency will attain to maximum performance.
* If the room temperature is 2°C lower than a set temperature, the compressor
will be stopped.
* When the room temperature is between +2°C to -2°C of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
However, the maximum frequency is limited in the range shown in Fig.1 based on the
fan speed mode and the outdoor temperature.
( Table 1 : Compressor Frequency Range )
AO* G60LATT
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outdoor air
temperature
34°C
30°C
19°C
10°C
0°C
When the room
temperature drops
AMP Air Conditioning
minimum maximum
frequency frequency
15rps 78rps
When the room
temperature rises
A zone
B zone
C zone
D zone
E zone
F zone
01-01
36°C
Fan speed mode
32°C
A zone
B zone
AO* G60LATT
C zone
21°C
D-F zone
12°C
2°C
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78rps 67rps 59rps
78rps 67rps 59rps
67rps 59rps 52rps
59rps 55rps 47rps