Technical data

2. Processes and functions
1
12
3
4
5
II - 6
2-4 Outdoor Fan Speed Control
To optimize performance in air conditioner, the outdoor fan speed is selected automatically
according to the outdoor temperature.
❑ Note that in both Cooling and Heating modes, the fan comes on at first at
high speed (H mode) for 5 seconds. Since outdoor conditions sometimes
make it difficult for the fan to start, this sudden surge of power may be
necessary.
❑ The outdoor fan operates in H mode for 3 minutes after the compressor stops
(excluding defrosting operation period).
❑ Charts below show how the outdoor fan speed changes with the change in
outdoor temperature.
(A) Cooling
Outdoor fan
motor (FMo)
25°C or more H
less than 25°C M
less than 19°C L
25
H
14
M
H
Outdoor coil Outdoor fan
temperature [C2] motor (FMo)
14°C or more M
less than 14°C H
(B) Heating
Fig. 6
Fig. 7
19
M
L
* This is supposed to be coil temp [C2] when
operating outdoor fan without running comp.
*Outdoor Air
temperature
OUTDOOR AIR TEMPERATURE (°C)
OUTDOOR COIL TEMPERATURE (°C)