Description Of Operation Circuit; Outdoor Fan Control (Dc Fan Motor); Fan Only Operation - Toshiba RAS-M10NKV-E Service Manual

6-1-7. Outdoor Fan Control (DC Fan Motor)

Although the outdoor fan motor drives the outdoor fan by non-step variable system of the revolution speed, the
revolution speed is restricted to three steps on the convenience of controlling.
If a strong wind is lashing outside of the room, the operation may be continued as the outdoor fan stops in order
to protect the outdoor fan motor.
If a fan lock occurred due to entering of foreign matter, the air conditioner stops and an alarm is displayed.
<COOL, DRY>
Compressor revolution (rps)
Outdoor temp.
sensor
TO < 38°C
TO
ECONO.
operation
TO is abnormal
<HEAT>
Compressor revolution (rps)
Outdoor temp. sensor
TO
ECONO. operation
TO is abnormal

6-2. Description of Operation Circuit

• Turning [ON] the breaker flashes the operation lamp.
This is the display of power-ON (or notification of power failure).
• When pushing [ ] button of the remote controller, receive sound is issued from the main unit, and
the next operations are performed together with opening the vertical air flow louvers.

6-2-1. Fan Only Operation

(The Remote controller [MODE] Button
is Set to the FAN ONLY Operation)
• This mode is only for the cooling only model.
• Once the setting is made, the operation mode is
memorized in the microcomputer so that the same
operation can be effected thereafter simply by
pushing [ ] button.
• When the [FAN] button is set to the AUTO position,
the indoor fan motor operates as shown in Fig. 6-
2-1. When the [FAN] button is set to LOW, LOW +
MED, MED + , or HIGH, the motor operates with a
constant air flow.
• ECONO, Hi POWER and COMFORT SLEEP
mode cannot be set.
Table 6-1-3
≥
TO 38°C 390 (rpm)
1 to 2 units 390 (rpm)
3 to 4 units 390 (rpm)
≥
TO 38°C 390 (rpm)
TO < 38°C 390 (rpm)
500 (rpm)
Table 6-1-4
≥
TO 5°C 390 (rpm)
TO < 5°C 500 (rpm)
≥
TO 5°C 390 (rpm)
TO < 5°C 390 (rpm)
390 (rpm)
− 11 −
~
20.3 50.3
700 (rpm)
640 (rpm)
500 (rpm)
640 (rpm)
500 (rpm)
640 (rpm)
~
20.3 33.3
640 (rpm)
640 (rpm)
500 (rpm)
500 (rpm)
500 (rpm)
˚C
+3
+2.5
+2
+1.5
+1
+0.5
0
Set
temp.
(Set temp.) 25˚C
NOTE :
1: Calculated from difference in motor speed of M+
*
and L–, and controlled.
Fig. 6-2-1 Auto setting of air flow
FILE NO. SVM-05019
~ ~
62.8 63.4
700 (rpm) 700 (rpm)
640 (rpm) 700 (rpm)
640 (rpm) 700 (rpm)
640 (rpm) 640 (rpm)
500 (rpm) 500 (rpm)
640 (rpm) 640 (rpm)
~
33.9
640 (rpm)
640 (rpm)
500 (rpm)
500 (rpm)
640 (rpm)
M+
*1
*1
*1
L–