Fujitsu AOU30RLXEH, Service Instruction

Page: 5 / 120

01-01
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 7.0°F(3.5°C) higher than a set temperature,
the compressor operation frequency will attain to maximum frequency.
If the room temperature is 1.0°F(0.5°C) lower than a set temperature, the compressor
will be stopped.
When the room temperature is b7.0°F(3.5°C) to -1.0°F(0.5°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.
AOU30RLXEH
( Table 1 : Compressor frequency range )
46 rps A zone
Hi
Indoor fan mode
Me
Lo
Quiet
Outdoor
temp. zone
B zone
C zone
D zone
E zone
F zone
46 rps
46 rps
33 rps
33 rps
33 rps
31 rps
31 rps
31 rps
27 rps
27 rps
27 rps 25 rps
25 rps
25 rps
23 rps
23 rps
23 rps 17 rps
17 rps
17 rps
17 rps
17 rps
17 rps
Minimum
frequency
Maximum
frequency
AOU30RLXEH 17 rps 46 rps
( Fig 1 : Limit of maximum frequency based on outdoor temperature )
A zone
B zone
C zone
D zone
E zone
F zone
96.8°F
(36°C)
89.6°F
(32°C)
69.8°F
(21°C)
53.6°F
(12°C)
35.6°F
(2°C)
When the room
temperature rises
(34°C)
93.2°F
86°F
(30°C)
66.2°F
(19°C)
50.0°F
(10°C)
32°F
(0°C)
When the room
temperature drops
.
.
.
1-1 COOLING OPERATION