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
2 |
Outdoor unit coil | Outdoor fan |
temperature [C2] | motor (FMo) |
|
|
or more 77°F | H |
|
|
32°F or more, less than 77°F | M |
|
|
less than 32°F | L |
|
|
OUTDOOR TEMPERATURE (°F)
77
32
H
M
L
Fig. 6
(B)Heating
Outdoor coil | Outdoor fan |
temperature [C2] | motor (FMo) |
|
|
or more 57°F | M |
|
|
less than 57°F | H |
|
|
OUTDOOR TEMPERATURE (°F)
57
M
H
Fig. 7
SM830082
II - 6
