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3. Outdoor fan control
Revolution frequency allocation of fan taps [rpm]
3-1) Cooling fan control
The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency. It is controlled
by every 1 tap of DC fan control (15 taps).
Only for 60 seconds after start-up of operation, it is fixed by the maximum fan tap corresponded to
the zone in the following table, and then the fan is controlled by temperature of TE sensor.
When temperature of TD sensor became high sufficiently, it is controlled so that the fan revolution
frequency will become higher ignoring TE sensor temperature.
+1 tap / 20 sec
Up to the maximum
revolution frequency of each zone
∗ Operation with W1 in case of fan-OFF
Revolution frequency hold
Operation with
the maximum tap
of each zone
Operation with WF
Normal fan control
by TE sensor
–1 tap / 20 sec
Down to the minimum
revolution frequency of each zone
TE
˚F (˚C)
TD
˚F (˚C)
185 (85)
176 (80)
167 (75)
149 (65)
89.6 (32)
84.2 (29)
RAV-SP
180AT2-UL
W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF
200 250 300 400 480 500 520 560 640 670 700 750 800 880 980
Temp. range
100.4°F (38°C) ≤ TO
82.4°F (28°C) ≤ TO < 100.4°F (38°C)
59°F (15°C) ≤ TO < 82.4°F (28°C)
41.9°F (5.5°C) ≤ TO < 59°F (15°C)
32°F (0°C) ≤ TO < 41.9°F (5.5°C)
23°F (–5°C) ≤ TO < 32°F (0°C)
TO < 23°F (–5°C)
TO error
20 Hz or lower 20Hz to 45Hz 45Hz or higher
Min. Max. Min. Max. Min. Max.
W6 WB W7 WE W9 WF
W5 WA W6 WD W8 WE
W3 W7 W4 W9 W6 WB
W2 W5 W3 W7 W5 W9
W1 W3 W2 W5 W3 W7
W1 W2 W1 W3 W2 W4
OFF OFF OFF OFF W1 W3
W1 WB W1 WE W1 WF