Description Of Operation Circuit - Toshiba RAS-M10UKCV-E Service Manual

8-2. 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 [START/STOP] button of the
remote control, receive sound is issued from the
main unit, and the next operations are performed
together with opening the vertical air flow louvers.
8-2-1. Fan Only Operation
(The Remote Control MODE Button is
Set to the FAN ONLY Operation)
• 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 [START/STOP] button.
• When the FAN button is set to the AUTO position,
the indoor fan motor operates as shown in Fig. 8-
2-1. When the FAN SPEED button is set to
LOW, MED, or HIGH, the motor operates with a
constant air flow.
• ECONO. mode cannot be set.
˚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. 8-2-1 Auto setting of air flow
8-2-2. Cooling Operation
(The Remote Control MODE Button is
Set to the COOL Position)
• 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 [START/STOP] button.
• A cooling operation signal is transmitted to
outdoor unit.
• The indoor fan motor operates as shown in Fig.8-
2-2 when FAN button is set to AUTO.
• The motor operates with a constant air flow when
the FAN button is set to LOW, MED, or HIGH.
• The outdoor unit controls the outdoor fan relay
R01, R02 and R03, and the compressor motor
speed according to the operation command
signal sent from the indoor unit.
˚C
+3
M+
*1
+2,5
*1
+2
*1
+1,5
L–
+1
+0,5
Set
0
temp.
–0,5
NOTE :
*1: Calculated from difference in motor speed of M+
and L–, and controlled.
Fig. 8-2-2 Setting of air flow [FAN AUTO]
– 27 –
M+
*1
*1
*1
L–
In normal
operation