Outdoor Fan Control; Outdoor Fan Motor - Fujitsu ASTG18KMTC Service Instruction

6. OUTDOOR FAN CONTROL

1. Outdoor Fan Motor

Following table shows the type of the outdoor fan motor. The control method is different
between AC motor and DC motor.
( Table6 : Type of Motor )
AOTG18/ 22/ 24KMTC
2. Fan Speed
( Table7 : Outdoor fan speed )
AOTG18KMTC
AOTG22KMTC
AOTG24KMTC
Refer to Fig.7
( Fig.7 : Outside air temperature zone selection )
Outside air
temperature rises
21°C
12°C
2°C
* The outdoor fan speed mentioned above depends on the compressor frequency.
(When the compressor frequency increases, the outdoor fan speed also changes to the higher
speed. When the compressor frequency decreases, the outdoor fan speed also changes to the
lower speed.)
* After the defrost control is operated on the heating mode, the fan speed keeps at the higher speed
as table8 without relating to the compressor frequency.
( Table8 : Outdoor fan speed after the defrost )
AOTG18/ 22/ 24KMTC
AC Motor
Zone Cooling/ Dry
Y 1180/ 1140/ 840/ 800/ 690/ 610/ 550/ 450/ 400
Z 1180/ 600/ 450/ 320
F 1180/ 320/ 260/ 230
G
1180/ 220/ 180
Cooling/ Dry
Zone
1180/ 1140/ 900/ 800/ 690/ 610/ 550/ 450/ 400
Y
Z 1180/ 600/ 450/ 320
F 1180/ 320/ 260/ 230
G 1180/ 220/ 180
Outside air
temperature drops
Y zone
19°C
Z zone
10°C
F zone
0°C
G zone
1200rpm
01-07
DC Motor
(rpm)
Heating
1200/ 1170/ 1000/
860/ 750/ 700/ 610/
570/ 510/ 470
Heating
1200/ 1170/ 1000/
860/ 750/ 700/ 610/
570/ 510/ 470