Operation Description; Outline Of Air Conditioner Control - Toshiba RAS-18GFHP-ES2 Service Manual

7-1. Outline of Air Conditioner Contr
This is a fix ed capacity type air conditioner, which uses
a AC motor for an indoor fan.
circuit is mounted in the indoor unit.
par ts which operate the compressor and the outdoor
fan motor, are mounted in the outdoor unit.
The air conditioner is mainly controlled by the indoor
unit controller. The controller operates the indoor fan
motor based upon commands transmitted by the
remote control and tr ansf
to the outdoor unit controller
The outdoor unit controller receiv
commands from the indoor unit, and oper
outdoor f an motor and the compressor
(1) Role of indoor unit controller
The indoor unit controller receiv
commands from the remote control and e
them.
• Temperature measurement at the air inlet of the
indoor heat e xchanger b
temperature sensor
•
T emperature setting of the indoor heat
exchanger b y the heat exchanger sensor
•
Louv er motor control
•
Indoor f an motor oper
•
LED display control
• T
r ansferring of operation commands to the
outdoor unit
•
Receiving of inf ormation of the operation status
and judging of the infor
error
(2) Role of outdoor unit controller
The outdoor unit controller receives the oper
commands from the indoor controller and
ex ecutes them.
•
Compressor oper ation
control
• Operation control of
outdoor fan motor
OPERATION
MODE
RAS-18GFHP Series
RAS-18GFP Series
RAS-24GFHP Series
RAS-24GFP Series

7. OPERATION DESCRIPTION

ol
The AC motor driv e
And electr ical
ers the operation commands
.
es oper ation
ates the
.
es the oper ation
x ecutes
y the indoor
ation control
mation or indication of
ation
Operations according
to the commands
from the indoor unit
Cooling
Heat
UH
F an only
Dr y
1120
r p m
Air flo w v olume (m 3 /h)
−
r p m
−
Air flo w v olume (m 3 /h)
r p m
Air flo w v olume (m 3 /h)
−
r p m
−
3
Air flo w v olume (m /h)
• Turning off the compressor and outdoor fan
when the outdoor unit receives the shutdown
command
• Defrost control in heating operation
(Temperature measurement by the outdoor heat
exchanger and control for the four-way valve
and the outdoor fan motor) *Heat pump Model
only.
7-1-1. Louver contr
(1) V er tical air flo
P osition of v eritcal air flo
controlled according to the operation mode
Besides , position of v
arbitr ar ily set b
The louv er position which is set b
stored in the microcomputer
automatically set at the stored position f
oper ation.
(2) Swing
If [SWING] b
is in oper ation, the v
When [SWING] button is pressed, it
s winging.
stops swinging.
7-1-2. Indoor fan contr
(1) The indoor fan is oper
change AC motor
(2) For air flo w lev
controlled in five steps (LOW
and HIGH). If AUTO mode is selected, the f
motor speed is automatically controlled b
diff erence betw
the room temper
LO
MED
T able 7-1-1
U H H M+ M
L+
H M
H M+ M
M+
M
1060 1030 970 950
830 800 770 720 700
1060 1030
1120 − 900
770
−
830 800 680
1170 1090 1000
1210 1020
930 900 920 760
750
− 1000
1210 1170 1090
930 900 810 750
−
− 21 −
FILE NO. SVM-06021
ol
w louv er
w louv er is automatically
er tical air flo w louv
y pressing [FIX] b utton.
y [FIX] b
, and the louv
utton is pressed when the indoor unit
er tical air flo w louv
ol (AC F an motor)
ated b y the stepless speed
.
el, speed of the indoor f
, LO W + , MED
een the preset temper
ature .
LO W+MED
+
W =
2
MED+HIGH
+ =
2
FA N T A P
SUL/SL-
L- L
L+ L
L-
L U L
L+ L-
L
L+ L L - U L
820 800 650
600 580
450
− 820 800 650
600
− 580 450
860
850 700 690
650 490 480
660
− 860 850 700 690
660 650 490 480
−
.
er can be
utton is
er is
or the ne xt
er star ts
an motor is
, MED +
an
y the
ature and
SUL/SL-
S UL
600 500
410 320
−
600
410
−
640 540
350
440
640 −
440
−