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Section
– 30 –
SM830076
2. Processes and functions
2-4
Outdoor Fan Speed Control
To optimize the performance of 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 unit coil
Outdoor fan
temperature [C2]
motor (FMo)
or more 77°F
H
less than 77°F
M
OUTDOOR TEMPERATURE (°F)
77
H
M
Fig. 6
OUTDOOR TEMPERATURE (°F)
57
M
H
Outdoor coil
Outdoor fan
temperature [C2]
motor (FMo)
or more 57°F
M
less than 57°F
H
(B)
Heating
Fig. 7