Fujitsu AOU18RLB, Service Instructions Manual

Page: 4 / 71

( Fig. 1 : Outdoor temperature zone )
1. COOLING OPERATION
Minimum
frequency
Maximum
frequency
AOU18RLB
AOU24RLB 12rps
12rps
Indoor fan mode
Me Lo Quiet
A zone
104rps 59rps 48rps 38rps
B zone 104rps 59rps 48rps 38rps
C zone 86rps 59rps 48rps 38rps
AOU18RLB
D zone 63rps 56rps 41rps 34rps
E zone 63rps 56rps 41rps 34rps
F zone 63rps 56rps 41rps 34rps
( Table 1 : Compressor frequency range )
01-01
AOU24RLB
( Table 2 : Limit of maximum speed based on outdoor temperature )
104rps
104rps
Outdoor
temp. zone
Hi
When the compressor operates for 30 minutes continuously at over the maximum frequency Ⅱ ,
the maximum frequency is changed from the maximum frequency Ⅰ to the maximum frequency Ⅱ .
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 frequency of the compressor.
* If the room temperature is 7°F(3.5°C) higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
* When the room temperature is b7°F(+3.5°C) to -1°F(-0.5°C) of the setting temperature,
the compressor frequency is controlled within the range shown in Table 1 .
However, the maximum frequency is limited in the range shown in Fig. 1 based on the
fan speed mode and the outdoor temperature.
* If the room temperature is 1°F(0.5°C) lower than a set temperature, the compressor will be
stopped.
Maximum
frequency
63rps
72rps
When the outdoor
temperature drops
97°F
(36°C)
A zone
93°F
(34°C)
90°F
(32°C)
B zone
86°F
(30°C)
70°F
(21°C)
C zone
66°F
(19°C)
D zone
E zone
F zone
50°F
(10°C)
32°F
(0°C)
54°F
(12°C)
36°F
(2°C)
When the outdoor
temperature rises