Toshiba RAV-SP560AT-E Service Manual page 110

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4. Outdoor fan control
W1
Upper fan 250
SM1100
Lower fan OFF
Upper fan 250
SM1400
Lower fan OFF
1) Cooling fan control

The outdoor fan is controlled by TE sensor.
(Cooling: Temperature conditions after medium
term)
The cooling fan is controlled by every 1 tap of DC
fan control (14 taps).
‚
At the activation time, although the maximum fan
tap in the following table are fixed for 60 seconds,
after then the fan may not rotate with high speed
for several minutes because the fan is controlled
by TE sensor value. It is not an abnormal status.
ƒ
When the discharge temperature sensor is
abnormal or the sensor comes off the holder, the
fan does not rotate with high speed, but a protec-
tive device works.
„
When the outdoor fan does not rotate with high
speed, judge a fan error by comparing the control
data in the following table with TO and TE values.
Control for fan tap by outdoor temperature in normal operation
TO TO < 5°C
MIN W1
MAX W6
2) Heating fan control

This control function lowers fan tap according to
TE sensor value when outdoor temperature is
high.
‚
When a status TE > 20°C is detected continu-
ously for 5 minutes, the operation may stop. This
status does not output an error code and is
assumed as usual status of thermo-OFF. The fan
restarts after approx. 2 minutes 30 seconds and
this intermittent operation is not a trouble.
ƒ
If the status in item
considered that the filter of suction part of the
indoor unit is dirty. Clean the filter and restart the
operation.
„
This control function does not work for 30 min-
utes after activation, 1 minute after defrosting,
and during defrost operation.
Allocations of fan tap revolutions [rpm]
W2 W3 W4 W5
280 300 320 340
OFF 270 290 400
270 270 300 350
OFF 240 270 330
5 ≤ TO <10°C 10 ≤ TO < 15°C 15 ≤ TO < 20°C 20 ≤ TO < 25°C
W2 W3
W8 WA
‚
is frequently found, it is
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W6 W7 W8 W9
380 420 470 520
480 520 560 600
410 470 530 590
390 450 510 570
TE [˚C]
46
37
34
20
W4 W5
WC WE
TE [˚C]
–60 rpm / 20 sec. STOP timer count
24
21
17
15
RAV-SM1100/1400AT-E
WA WB WC WD
570 630 690 740
660 720 780 860
670 750 810 840
650 730 790 820
MAX.
+30 rpm / 20 sec.
Hold zone
–30 rpm / 20 sec.
MIN.
25°C ≤ TO
TO error
WA W1
WE WE
–60 rpm / 20 sec.
–30 rpm / 20 sec.
Hold zone
+30 rpm / 20 sec.
WE
800
940
860
840