Toshiba RAV-SM304SDT-TR Service Manual page 71

4. Outdoor fan control
W1
SP40, SP45 200
1) Cooling fan control
The outdoor fan is controlled by TE, TD, and TO sensors and also revolution frequency of the operation.
The outdoor is controlled by every 1 tap of DC fan control (15 taps).
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.
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.
TE [˚C]
32
29
Temp. range
38°C ≤ TO
32 ≤ TO < 38°C
15 ≤ TO < 32°C
5 ≤ TO < 15°C
1 ≤ TO < 5°C
–5 ≤ TO < 1°C
TO error
Allocations of fan tap revolutions [rpm]
W2 W3 W4 W5
300 350 410 480
+1 tap/20 seconds
rpm hold
–1 tap/20 seconds
f < 34.1Hz
Min.
W6
W5
W3
W2
W1
W1
TO < –5°C OFF
W1
W6 W7 W8 W9
500 560 640 670
TD [˚C]
85
80
75
65
34.1Hz ≤ ≤ ≤ ≤ ≤ f < 58.6Hz
Max. Min. Max.
WB W8 WD
WA W7 WC
W7 W5 W9
W5 W4 W7
W3 W3 W5
W2 W2 W4
OFF W3
WF W1 WF
– 71 –
WA WB WC WD
700 750 800 800
Operation with WE
"WF"
Operation with
maximum tap in
each zone
Usual fan control
58.6Hz ≤ ≤ ≤ ≤ ≤ f
Min. Max.
WA WF
W9 WF
W7 WB
W6 W9
W4 W7
W3 W5
W1 W4
W1 WF
WE WF
840 840