Outdoor Fan Control - Fujitsu AO G18KATA Series Service Instruction

3-2. Outdoor fan control

¢ Outdoor fan motor
This outdoor unit has a DC fan motor. (Control method is different between AC and DC motors.)
¢ Fan speed
 Model: AOYG18KATA
Fan speed is defined by outdoor temperature and compressor frequency.
• Outside air temperature zone selection
Cooling
Fan step
Y zone
S-HIGH2
S-HIGH1
HIGH
10
9
8
7
6
5
4
3
2
1
NOTE: After defrost control on the heating mode, the fan speed is kept higher regardless of the
compressor frequency.
Fan speed after defrost control: 1,120 rpm
3-2. Outdoor fan control
Outside air
temperature rises
21°C
12°C
2°C
-8°C
Heating
Y zone
— 1,120
990 1,120
990 1,120
— 1,120
990 1,120
990 950
890 830
830 750
780 710
780 660
670 500
570 500
520 500
Outside air
temperature drops
Y zone
Z zone
F zone
G zone
H zone
Dry Cooling or dry at low outdoor temp.
Z zone F zone
— —
— —
— —
— —
990 630
990 630
890 630
830 400
780 400
780 400
670 310
570 200
520 200
- (04-12) -
19°C
10°C
0°C
-10°C
Unit: rpm
G zone
— —
— —
— —
— —
360 300
360 300
360 300
300 280
270 230
240 200
220 200
220 200
200 200
H zone
—
—
—
—
300
300
300
280
230
200
200
200
200
3. Fan control