Fujitsu ARC90LHTA - Advanced Controls and Timers

1-6. OUTDOOR FAN CONTROL
1. Outdoor Fan Motor
Following table shows the fan speed of the outdoor unit.
(Table 6 : Fan speed of the outdoor unit)
The outdoor fan speed is decided depending on the operation mode and the outdoor temperature.
The compressor and the fan start-up at the same time,
and the fan stops after the compressor stops and 60 seconds has passed.
The fan doesn't operates for 5 seconds after the fan stops.
The fan operates at 500 rpm for 20 seconds after the start-up.
However, the fan operates at 300rpm for 20 seconds when the initial rotational speed is 300rpm or less.
01-07
Fan step
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
850
850
820
730
620
500
420
360
320
300
intermittent 1
intermittent 2
intermittent 3
intermittent 4
intermittent 5
intermittent 6
860
860
830
730
620
500
420
360
320
300
intermittent 1
intermittent 2
intermittent 3
intermittent 4
intermittent 5
intermittent 6
880
840
810
730
600
500
420
360
320
300
intermittent 1
intermittent 2
intermittent 3
intermittent 4
intermittent 5
intermittent 6
880
840
810
730
600
500
420
360
320
300
intermittent 1
intermittent 2
intermittent 3
intermittent 4
intermittent 5
intermittent 6
AO* A72LALT AO* A90LALT AO* A72LALT AO* A90LALT
Fan speed [ rpm ]
intermittent 1
intermittent 2
intermittent 3
intermittent 4
intermittent 5
intermittent 6
Fan speed 0 rpm
duration time T ( sec )
Fan step
6
12
19
26
33
40
7
Fan speed 300 rpm
duration time ( sec )
When switched from normal fan step to intermittent fan step, always start from 300rpm /7sec.
When there was a change during intermittent step 1-6, switching is performed
at the time the current speed duration time reaches time-up.
7 sec 7 sec 7 sec
300 rpm
[ T ] sec [ T ] sec
0 rpm
Normal fan step
Intermitten fan step
Time
Fan speed
COOLING / DRY mode HEATING mode
.
.
.
.
(Fig.8 : Intermittent fan mode)
6
5
4
3
2
1
Fan mode
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