Heating Operation - Fujitsu Airstage J-II Service Manual

2-3-2 Heating Operation

Fan step
AJ A36LALH AJ A45LALH AJ A54LALH
11
10
9
8
7
6
5
4
3
2
1
0
Switching conditions of step
The initial speed of the first boot outdoor unit is detected by outdoor air temperature sensor value (TAOUT).
Outside air temperature
sensor detected value
TAOUT 10°C
10°C TAOUT 15°C
15°C TAOUT 20°C
20°C TAOUT
Thereafter, the high-pressure is monitoring at a set time interval and the fan speed is changed by the following conditions.
(Condition which lowers the fan speed)
High-pressure 3.30MPa and heat sink temperature
(Condition which raises the fan speed)
High-pressure saturation
Fan speed (rpm)
800 800
700
700
660
660
660 660
670
670
590 590
540
540
540
540
450 450
410
410
340 340
340
340
270
270
250 250
0
0
0 0
0
0
0
0
0 0
0
0
0 0
0
0
0
0
0 0
Fan step
11
8
5
5
3.20MPa or heat sink temperature
800
700
700
700
670
590
540
540
450
410
340
340
270
250
0
0
0
0
0
0
0
0
0
0
80°C
85°C
02-06