Outdoor Fan Speed Control; (A) Cooling; (B) Heating - Sanyo SPW-XR253GH56 Technical Data & Service Manual

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 Air
temperature
25°C or more
less than 25°C
1
less than 19°C
* This is supposed to be coil temp [C2] when
operating outdoor fan without running comp.
1 2

(B) Heating

3
Outdoor coil
temperature [C2]
14°C or more
less than 14°C
4
5
Outdoor fan
motor (FMo)
H
M
L
Outdoor fan
motor (FMo)
M
H
II - 6
2. Processes and functions
H
25
M
19
L
Fig. 6
M
14
H
Fig. 7
SM830080