Toshiba RAV-SM1603AT-E Service Manual page 65

4. Outdoor fan control
SM160 W1
High 250
Low —
1) Cooling fan control
Q
The outdoor fan is controlled by TE, TD, and TO sensors and also revolution frequency of the opera-
tion. The outdoor is controlled by every 1 tap of DC fan control (15 taps).
R
Only during 60 seconds after the operation has started, the fan is fixed with the maximum fan tap
which corresponds to the zone in the following table.
After then the fan is controlled by TE sensor temperature.
S
Considering a case that TE sensor has come out of the holder, the fan is controlled so that revolution
frequency of the fan increases regardless of TE if temperature of TD sensor has risen.
SM160
TE [˚C]
a
b
(The operation frequency differs according to the model type.)
Temp. range
29°C < TO
15 < TO < 29°C
5 < TO < 15°C
0 < TO < 5°C
–5 < TO < 0°C
TO < –5°C
TO error
Allocations of fan tap revolutions [rpm]
W2 W3 W4 W5
260 260 320 380
— 240 300 400
a b
37 34
+1 tap/20 seconds
rpm hold
–1 tap/20 seconds
Below 30Hz
Min. Max.
W5 WA
W3 W7
W2 W5
W1 W3
W1 W2
OFF OFF
W1 WE
W6 W7 W8 W9
480 500 530 610
500 520 550 630
TD [˚C]
85
80
75
65
Above 30 Hz below 45 Hz
Min.
W7
W5
W4
W3
W2
OFF
W1
– 65 –
WA WB WC WD
640 660 720 720
660 700 740 740
Operation with WE
Operation with
maximum tap in
each zone
Usual fan control
Above 45 Hz
Max. Min.
WC W9
W9 W7
W7 W6
W5 W4
W4 W3
W3 OFF
WE W1
WE WF
720 780
740 820
Max.
WE
WB
W9
W7
W5
W3
WE