Outdoor Fan Control - Fujitsu ASUH18LMAS Service Manual

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
 AOUH18LMAS1
Fan speed is defined by outdoor temperature and compressor frequency.
Fan step
13
12
11
10
9
8
7
6
5
4
3
2
1
S-HIGH
• →hen the compressor frequency increases, the outdoor fan speed also changes to the higher
speed.
• →hen the compressor frequency decreases, the outdoor fan speed also changes to the lower
speed.
NOTE: After defrost control on the heating mode, the fan speed is kept higher regardless of the
compressor frequency.
Fan speed after defrost control: 830 rpm
3-2. Outdoor fan control
Cooling or dry
830
830
740
700
650
570
570
540
510
480
480
400
200
—
- (04-12) -
Unit: rpm
Heating
—
—
—
830
740
670
620
590
480
410
340
270
200
830
3. Fan control