Toshiba RAS-07EK User manual

SERVICE MANUAL
AIR-CONDITIONER
SPLIT WALL TYPE
FILE NO. A10-9507
PRINTED IN JAPAN, Jan., 1996 S
RAS-07EK/RAS-07EA
RAS-09EK/RAS-09EA
TOSHIBA

– 2 –
CONTENTS
1. SPECIFICATIONS........................................................................................................ 3 ~ 4
2. CONSTRUCTION VIEWS............................................................................................ 5 ~ 6
2-1. Indoor Unit ......................................................................................................................................... 5
2-2. Outdoor Unit....................................................................................................................................... 6
3. CAUTION IN INSTALLATION..................................................................................... 7 ~ 11
3-1. Installation of Indoor Unit ................................................................................................................... 7
3-2. Flaring ................................................................................................................................................ 9
3-3. Pipe Process Points ......................................................................................................................... 10
4. WIRING DIAGRAM .......................................................................................................... 12
5. SPECIFICATIONS OF ELECTRICAL PARTS.................................................................. 13
5-1. RAS-07EK/RAS-07EA ..................................................................................................................... 13
5-2. RAS-09EK/RAS-09EA ..................................................................................................................... 13
6. REFRIGERANT CYCLE DIAGRAM.............................................................................. 14
7. MICRO-COMPUTER BLOCK DIAGRAM......................................................................... 15
8. OPERATION DESCRIPTIONS................................................................................ 16 ~ 28
8-1. Names and Functions of Indicators and Controls on Indoor Unit ..................................................... 16
8-2. Functions on Remote Controller....................................................................................................... 16
8-3. Names and Functions of Indicators on Remote Controller ............................................................... 18
8-4. Handling the Remote Controller ....................................................................................................... 18
8-5. Automatic Operation ........................................................................................................................ 20
8-6. Cooling/Fan Only Operation............................................................................................................. 21
8-7. Dry Operation................................................................................................................................... 22
8-8. Timer Operation ............................................................................................................................... 22
8-9. ADJUSTING AIR FLOW DIRECTION .............................................................................................. 24
8-10. FAN ONLY Operation....................................................................................................................... 26
8-11. COOL Operation .............................................................................................................................. 26
8-12. ECONO. Mode ................................................................................................................................. 27
8-13. DRY Operation................................................................................................................................. 27
8-14. AUTO Operation .............................................................................................................................. 28
9. TROUBLESHOOTING CHART ................................................................................ 29 ~ 41
9-1. What to be Rechecked First ............................................................................................................. 29
9-2. Primary Judgement of Trouble Sources ........................................................................................... 30
9-3. Troubleshooting Flowcharts ............................................................................................................. 34
9-4. Test Points on the PC Board and List of Voltage Values .................................................................. 36
9-5. How to Check the Remote Control (Including the Indoor PC Board)................................................ 37
9-6. PC Board Layout.............................................................................................................................. 40
10. EXPLODED VIEWS AND PARTS LIST............................................................... 42 ~ 44
10-1. Indoor Unit ....................................................................................................................................... 42
10-2. Outdoor unit ..................................................................................................................................... 44

– 3 –
1. SPECIFICATIONS
Item
Capacity
Power source
Power consumption
Power factor
Running current
Starting current
Moisture removal
Noise
Refrigerant
Refrigerant control
Interconnection pipe
Condensale drain
pipe
INDOOR UNIT
Dimensions
Net weight
Evaporator type
Indoor fan type
Air volume
Fan motor output
Air filter
OUTDOOR UNIT
Dimensions
Net weight
Condenser type
Outdoor fan type
Air flow volume
Fan motor output
Compressor
Safety device
Auto louver
Usable outdoor
temperature range
Indoor (H/M/L)
Outdoor (220/230/240V)
Name of refrigerant
Rated volume
Gas side size
Connection type
Liquid side size
Connection type
Maximum length (of one way)
Maximum height
Indoor unit higher
Outdoor unit higher
Outer diameter
Height
Width
Depth
High fan
Medium fan
Low fan
Height
Width
Depth
Model
Output
Model
kW
Btu/h
Phase
V
Hz
kW
%
A Indor/Outdoor
A
lit/h
dB
dB
kg (oz)
mm (in)
mm (in)
m (ft)
m (ft)
m (ft)
mm (in)
RAS-
mm (in)
mm (in)
mm (in)
kg (lbs)
m3/h (CFM)
m3/h (CFM)
m3/h (CFM)
W
RAS-
mm (in)
mm (in)
mm (in)
kg (lbs)
m3/h (CFM)
W
W
°C
RAS-07EK/EA
Single
220/230/240
50
0.51/0.52/0.53
95/94/93
10
0.8
43/36/31
45/46/46
R22
0.50 (17.6)
Capillary tube
9.52 (3/8)
Flare connection
6.35 (1/4)
Flare connection
10 (32.8)
5 (16.4)
5 (16.4)
16 (5/8)
07EK
265 (10.4)
790 (31.1)
155 (6.1)
8 (17.6)
Finned tube
Cross flow fan
460 (270)
370 (215)
300 (175)
18
07EA
530 (20.9)
770 (30.3)
200 (7.9)
26 (57.3)
Finned tube
Propeller
1360 (800)
18
PH70T1-4C
500
Fuse, Overload relay
Yes
21 – 43
Specifications are subject to change without notice.
RAS-09EK/EA
Single
220/230/240
50
0.71/0.72/0.73
95/94/93
14
1.2
43/36/31
45/46/46
R22
0.57 (20.1)
Capillary tube
9.52 (3/8)
Flare connection
6.35 (1/4)
Flare connection
10 (32.8)
5 (16.4)
5 (16.4)
16 (5/8)
09EK
265 (10.4)
790 (31.1)
155 (6.1)
8 (17.6)
Finned tube
Cross flow fan
460 (270)
370 (215)
300 (175)
18
09EA
530 (20.9)
770 (30.3)
200 (7.9)
26 (57.3)
Finned tube
Propeller
1360 (800)
18
PH94T1-4C
750
Fuse, Overload relay
Yes
21 – 43
220V
1.85
6310
230V
1.87
6380
240V
1.90
6480
220V
2.25
7680
230V
2.27
7750
240V
2.30
7850
220V
0.19/2.26 230V 0.2/2.2 240V 0.22/2.13 220V 0.19/3.26 230V 0.2/3.2 240V 0.22/3.13
Polypropylene net filter (Washable)
*1
*2

– 4 –
Note: *1
• Capacity is based on the following temperature conditions.
Indoor unit inlet air temperature
Outdoor unit inlet air temperature
JIS C9612-1994
Cooling
27°C
19°C
35°C
24°C
(DB)
(WB)
(DB)
(WB)
Note: *2 CHARGELESS
• No additional refrigerant required.
• This air conditioner accepts a connection piping length of up to 10m and a head of up to 5m.
• There is no need to add the refrigerant as long as the total length of the connection piping is up to 10m.

– 5 –
2. CONSTRUCTION VIEWS
2-1. Indoor Unit
RAS-07EK
RAS-09EK
Fig. 2-1
Heal exchanger
Air filter
Air inlet
Air outlet
265
Single phase 1ø 220/230/240V (50Hz)
790
222 346 222
392
Hanger
Hanger
Connecting pipe (0.47m)
Connecting pipe (0.37m)
(Flare ø6.35)
Drain hose
(0.53m)
Terminal block
(Flare ø9.52)
Front panel
Back body 155
Wireless
remote controller
Remote
controller holder
55
136
16
59.6 5
112.8
(ø8 ~ ø10)
659
450
344
44
3
20
21
265
231
40
30
40
30
2-ø65
120 or more
Minimum
distance to wall
Piping hole
Detail of installing
dimensions of the
main unit
Hanger
40 or more
Minimum distance
to ceiling
106
Center line
Installation plate center line
Installation
plate outline
790
289 106
distance to wall
Minimum
170 or more
(ø6)
For stud bolt
For stud bolt
790
5010
48
6610
64

– 6 –
2-2. Outdoor Unit
RAS-07EA
RAS-09EA
Fig. 2-2
230
216
30
50
36
600 85
ø25 Drain hole Gas side (flare ø9.52)
Liquid side (flare ø6.35)
8-ø6 Holes
(For fixing the outdoor unit)
4-ø11x14 Long holes
(For anchor bolt ø8-ø10)
Handle
525 530
5
Fan guard
ø420
268
111
770 59
89
TOSHIBA
200
5
11
Electric
250
Ground
A
600
R10
36
50
230 216
25
2-ø6 Hole
ø11x14 Hole
Detail Drawing
A
View
Z
Z
54 62
25.5
22.5
111
119 114
Access for
connector charging
120
parts cover
Mounting dimension of anchor bolt
600
230
Inlet port
100 or more
400 or more
Outlet
port
Center
port
(For anchor bolt ø8-ø10)
4-ø11x14 Long holes
Visible outline
of the product
600 or more
(Minimum distance
of the wall)
45 or more
Inlet port

– 7 –
Note:
• Connect the indoor and outdoor units with a
connective cable over the shortest distance as
possible.
Fig. 3-4
3. CAUTION IN INSTALLATION
3-1. Installation of Indoor Unit
3-1-1. Removing the Front Panel
(1) Openthescrewcapsandremovethe two screws
securing the front panel.
Fig. 3-1 Opening the screw cap
(2) Close the screw caps as behind.
(3) Open theairoutlet direction(up-down)louver hori-
zontally by hand.
(4) Slightly open the lower part of the front panel,
then pull the upper part of the front panel toward
you to remove it from the rear plate.
Fig. 3-2 Removing the front panel
Caution When Connecting the Connecting Cable
When connecting the connective cable, follow the
instructions below.
(1) Remove the front panel.
Fig. 3-3
(4)
(3)
(2)(1) (1)(2)
(4)
Air outlet direction
louver.
Open it upward b
y
putting your finger
on the edge.
Front panel
Cord clamp
Wiring cover
Screw
Rear plate
Screws Rear plate
bushing
(1)
(2)
60mm
10mm
50mm
Connecting cable length
to be removed
For a three counductor cable

– 8 –
(2) Insert the connective cable fully into the termi-
nal block and secure it by screw tightly.
(3) Secure theconnectivecable withthecord clamp.
(4) Tighteningtorqueshouldbe 1.2 N.m(12kgf.cm)
Fig. 3-5
(5) Fix the wiring cover, rear plate bushing and front
panel on the indoor unit.
Fig. 3-6
3-1-2. Caution in Mounting the Front Panel
When the panel is removed and mounted again, fol-
low the step described below.
(1) After fastening two screws, be sure to hook the
inside clicks (1) and (2) of the front panel shown
inFig.3-7,right gap isleftbetweenthefront panel
and the rear plate.
Fig. 3-7
Note:
• If cooling (dry) operation is made without push-
ing the air outlet, dew can be attached on the
front panel surface. In addition, a gap between
the front panel and the body will become wider,
spoiling the appearance.
3-1-3. Precautions for Refrigerant Piping
(1) Under-side connection with piping
Fig. 3-8
(1) Cut out the knockout piece from the right below
of the rear plate with a knife, etc. Smooth the cut
edge.
(2) Set the drain hose in the inner part of the indoor
unit and connecting cable in lower part of it.
(3) Wind the tape round them.
Fig. 3-9
Connecting cable
Cord clamp
Screw
Tewminal block
Screws Wiring cove
r
Grounding wire
Connecting
cable
12
(1) (2)
Push Push
Slit part
Rear plate
Pipe holder
Pipe holder
Indoor unit
Piping
Connecting
cable
Drain hose
W
all
Installation plate

– 9 –
(2) Left-hand connection with piping
When the piping runs to the left, be sure to use a tool
such as a pipe bender to bend the pipe.
Note:
• If the pipe is bent incorrectly, the air conditioner
could be raised.
Fig. 3-10
(1) When the piping runs to the left, remove the left
side body bushing of the rear panel. You may
needthebody bushingwhenyou relocatetheunit,
so be sure make the customer keep it in a safe
place.
(2) After passingtheconnection pipethroughthepipe
hole, connect the connection pipe to the auxiliary
pipes and wrap covering tape around them.
(3) For left-hand connection with piping, bend the
pipes as shown in Fig.3-11.
Fig. 3-11
Note:
• Bend the connection pipe so that the distance
between the pipe and the wall be 43 mm or less.
3-2. Flaring
3-2-1. Pipe Cutting
(1) Cut the pipe little by little advancing the blade of
pipe cutter slowly.
Fig. 3-12
Note:
• For fine work, do not advance the blade by force
in order to prevent distortion of the pipe, and ex-
tra burrs.
• Cut the pipe a little longer than required.
Fig. 3-13
3-2-2. Burr Removal
(1) Raiseburrs with theburr stickorthe burrremover.
(Hold the flaring end down to prevent burrs from
dropping inside pipe)
Fig. 3-14
Auxiliary
pipes
Connection pipes
Connection pipes
43 mm
120mm
Indoor unit external shape
Wall
1/4 Thickness

– 10 –
Note:
• Be sure to remove burrs to avoid unevenness on
the flare face which will cause gas leaks.
• Cover the pipe end with a polyethylene bag and
on sheet.
Fig. 3-15
3-2-3. Point of Flaring
(1) The exact length of pipe protruding from the face
of the flare die is determined by the flaring, too.
Fig. 3-16
Note:
• Too long a protrusion of pipe from the flaring tool
will result in too long a flare; If this happens, the
flare nut will not tighten and the joint will not seat.
• Too small a protrusion will cause gas leaks.
• Fine flaring work shows even brightness on the
flared surface and uniform thickness of pipe.
• Unsuccessful flaring work causes gas leaks,
therefore rework it.
Fig. 3-17
• The above faulty flaring will cause gas leaks.
3-2-4. Finishing Work
(1) Fix the pipe firmly on the flare die. Match the cen-
ters of both the flare die and the flaring punch,
and tighten flaring punch fully.
3-3. Pipe Process Points
3-3-1. Pipe Bending
(1) Carefully bend by hand.
Note:
• Collapsed pipe cause cooling failure.
Fig. 3-18
(2) Bend with pipe bender. (Since the insulation is
wound on, use the bender by sliding the insula-
tion to one side, or cutting it halfway.)
Fig. 3-19
CAUTION:
• Too large protrusion of pipe results in impos-
sible tightening of the flare nut.
• Too small a protrusion of pipe will cause gas
leaks due to insufficient flare surface.
• Table 3-1 shows the use of an imperial die and a
rigid die.
Table 3-1
Imperial
1.3
1.6
Rigid
0.7
1.0
A (mm)
D (mm)
6.35
9.52
Type of pipe
1/4”
3/8”
A
D
Slant Scratch Crack Uneven
thickness

– 11 –
CAUTION:
• Do not use the spanner from the beginning of
tightening.
• When processing 1/4 inch pipe, tighten lightly
with spanner and then tighten additionally by
90 – 120 degree with torque wrench and span-
ner.
Table 3-2 Tightening torque of flare nut
Fig. 3-24
Fig. 3-25
(3) The radius of the pipe bend should be 100 mm or
more.
Fig. 3-20
(4) Too small a radius causes collapse of pipe.
Fig. 3-21
3-3-2. Pipe Connection
(1) Connect the flare pipe close to the air conditioner
unit so both faces fit well.
Note:
• Forcing to tighten the nut without the center axis
coincided causes gas leaks.
Fig. 3-22
(2) Use a torque wrench and spanner to tighten or
untightentheflarenut.Tighteningshouldbedone
by finger first, then use the torque wrench. A
torque wrench helps to provide adequate torque
for tightening.
Fig. 3-23
Note:
• Insufficient tightening causes gas leaks. Over
tightening results in cracks the flared surface.
Pipe size
Standard
torque
6.35 mm (1.4")
15.7 (160)
9.52 mm (3/8")
29.4 (300)
R
100mm
Flare nut
Match centers
10
7
T
he distortion ratio
m
ust be less than 10:7.

– 12 –
4. WIRING DIAGRAM
RAS-07EK/RAS-07EA
RAS-09EK/RAS-09EA
Fig. 4-1
678345 12
678345 12
678345 12
WHI
CN25
T3.15A
250V
INDICATION&SWITCH
PARTS
P04
SG01 DSA
GRY GRY
THERMAL
FUSE 77 C
(FAN MOTOR)
R901 TNR
F01 FUSE
3
4
3
4R900
TNR
RY07
POWER
RELAY
RY08
COMMON
RELAY
GRN &YEL
GROUND
TERMINAL
21
GRN&YEL
BLK WHI
INDOOR
OUTDOOR
IC03
CN24 CN12
654
31
31
132
654132
BLU
PNK
YEL
ORN
RED
BRW
CN31 1
2
3
1
2
3
5
3
1
5
3
1
BRW
YEL
BLK
WHI
IC
GRY
RED
RUNNING
CAPACITOR
PTH
TH01
FAN MOTOR
THERMAL
PROTECTER
(90 C)
CN17
312
312
RED
BLK
WHI
312
312
PJ18
CN01
INFRARED RAY
RECEIVE PARTS
THERMO.
SENSOR
(TA)
CN03
HEAT
EXCHANGER
SENSOR
(TC)
CN06
CN05
CN13
CN10
COLOR IDENTIFICATION
BRW :BROWN
RED :RED
WHI :WHITE
YEL :YELLOW
BLU :BLUE
BLK :BLACK
GRY :GRAY
PNK :PINK
ORN :ORANGE
GRN&YEL :GREEN &
YELLOW
INDOOR TERMINAL BLOCK
BRW
BLU
GRN&YEL
1 50Hz
220/230/240V~
o
C60
312
312
BLU
GRY
RED
31
31
WHI
C51
TRANSFOMER
31
31
312
312
11
22
11
22
21
BLK
RUNNING
CAPACITOR
GRN&YEL
CHASSIS
RUNNING
CAPACITOR
RED WHI
BLK
BLK
OVER
CURRENT
RELAY
COMPRESSOR
FAN MOTOR
RED
WHI
RED
GRN&YEL
LOUVER
MOTOR
RED
CN33
CN32

– 13 –
5. SPECIFICATIONS OF ELECTRICAL PARTS
5-1. RAS-07EK/RAS-07EA
No.
1
2
3
4
5
6
7
8
9
10
Parts name
Compressor
Fan motor (For indoor)
Fan motor (For outdoor)
Overcurrent relay
Thermo sensor (TA-sensor)
Transformer
Microcomputer
Power relay, Common relay
Heat exchanger sensor
(TC-sensor)
Type
PH70T1-4C
AF-200-18-2C-1
UE6-21A5P
J-MRA99259-9201
(microporcessor)
EVN40M105UL1
–
EEP2W125HQA104
TTZ-200/240-1
87CH40N
G4A-1A
(microprocessor)
Specifications
Output (Rated) 500W, 2 pole, 1 phase, 220 – 240V, 50 Hz
Winding resistance (Ω)
(at 20°C)
Output (Rated) 18W, 2 pole, 1 phase, 200 – 240V, 50 Hz
Winding resistance (Ω)
(at 20°C)
Output (Rated) 18W, 2 pole, 1 phase, 200 – 240V, 50 Hz
Winding resistance (Ω)
(at 20°C)
Ultimate tripping, 3.3A (Terminal 1 - 2) at 80°C
Tripping temp: 135 ± 5°C
Resetting temp: 78 ± 11°C
Addjustable range: 17 ~ 30°C
400WV, 1µF
400WV, 15µF
450WV, 1.2µF
Primary 200 – 240V, Secondary 15V
Coil: 12V 90mA, Rated 250V 20A
10 KΩat 25 °C
Runing
capacitor
for indoor fan motor
for compressor
for outdoor fan motor
Red-Black
3.44 White-Black
6.18
Red-Black
101.6 White-Black 209.4
Red-Black
366.2 White-Black 368.5
No.
1
2
3
4
5
6
7
8
9
10
Parts name
Compressor
Fan motor (For indoor)
Fan motor (For outdoor)
Overcurrent relay
Thermo sensor (TA-sensor)
Transformer
Microcomputer
Power relay
Heat exchanger sensor
(TC-sensor)
Type
PH94T1-4C
AF-200-18-2C-1
UE6-21A5P
J-MRA99260-9200
(microporcessor)
EVN40M105UL1
–
EEP2W125HQA104
TTZ-200/240-1
87CH40N
G4A-1A
(microprocessor)
Specifications
Output (Rated) 750W, 2 pole, 1 phase, 220 – 240V, 50 Hz
Winding resistance (Ω)
(at 20°C)
Output (Rated) 18W, 2 pole, 1 phase, 200 – 240V, 50 Hz
Winding resistance (Ω)
(at 20°C)
Output (Rated) 18W, 2 pole, 1 phase, 200 – 240V, 50 Hz
Winding resistance (Ω)
(at 20°C)
Ultimate tripping, 4.8A (Terminal 1 - 2) at 80°C
Tripping temp:120 ± 5°C
Resetting temp:69 ± 11°C
Addjustable range: 17 ~ 30°C
400WV, 1µF
400WV, 15µF
450WV, 1.2µF
Primary 200 – 240V, Secondary 15V
Coil: 12V 90mA, Rated 250V 20A
10 KΩat 25 °C
Runing
capacitor
for indoor fan motor
for compressor
for outdoor fan motor
Red-Black
2.76 White-Black
5.96
Red-Black
101.6 White-Black 209.4
5-2. RAS-09EK/RAS-09EA
Red-Black
366.2 White-Black 368.5

– 14 –
Cooling
Surface temp. of heat
exchanger interchang-
ing pipe (°C)
Ambient temp.
conditions DB/WB
(°C)
Tr2
49.0
60.0
33.0
Outdoor
35/24
43/26
21/15
Indoor
27/19
32/23
21/15
Tr1
9.0
15.0
0.5
Standard
High temperature
Low temperature
6. REFRIGERANT CYCLE DIAGRAM
RAS-07EK/RAS-07EA
RAS-09EK/RAS-09EA
Note:
• Measure the heat exchanger temperature at the center of U-bend (By means of thermistor thermometer.)
Fig. 6-1
Table 6-1
50Hz Standard pressure
P1
(kg/cm2G)
5.7
6.5
3/5
Capillary tube
/ 1.5x1500
0.37m
/ 9.52( / 3/8 in)
Mark( )means check points of Gas Leak
TI
T2
Pressure check
(Gauge port)
Air purge here
Auxiliary pipe
Compressor
Condenser
Dryer
Indoor unit
Evaporator
Cross flow fan
Optional piping kits
RB-P31BEF1 (3m)
RB-P51BEF1 (5m)
RB-P71BEF1 (7m)
Propeller fan
Outdoor unit
PH70T1-4C
P1
Gas container
connection
(Reinstall.etc.)
0.47m
/ 6.35( / 1/4 in)
Auxiliary pipe
Max length 10m
Allowable height 5m
Compressor Refrigerant
rated volume Unit
R-22 0.50kg 07EA
PH94T1-4C R-22 0.57kg 09EA
Accum-tank

– 15 –
7. MICRO-COMPUTER BLOCK DIAGRAM
Fig. 7-1
Louver Direction Setting
07EK.09EK : 50Hz
AC 220/230/240V
Thermo. sensor
Infrared Signal Receiver
Heat Exchanger Sensor
Infraed Rays Clock Frequency
Oscillator Circuit
Operation Mode Selection
AUTO,COOL,DRY
FAN ONLY
Thermo Setting
Fan Speed Selection
ECONO.
Initializing Circuit
Operation
(START/STOP)
Main Unit Control Panel
Functions
Louver Control
3-minute Delay at Restart for Compressor Motor Revolution Control Processing (Temperature Processing) Timer
C.P.U.
50Hz input
DC5V
Operation Display
Compressor
ON/OFF Signal Phase Output
Timer Display
FAN-ONLY Display
Indoor Fan Motor
Compressor Louver Motor
Power Relay
Relay Driver
Louver Driver
Power Source
Transformer
Louver AUTO Swing
OFF TIMER Setting
ON TIMER Setting
ECONO Sign Display
Power Photocoupler
Outdoor Fan Motor
Remote Control

– 16 –
8. OPERATION DESCRIPTIONS
8-1. Names and Functions of Indicators and Controls on Indoor Unit
8-1-1. Display Panel
The operating conditions are indicated below.
Fig. 8-1
8-1-2. Control Panel
Lift the front panel to perform control panel setting.
(1) Opening the front panel
1) Push the PUSH on both lower corners of the
front panel.
2) Open the panel. You can lift the panel up to
an angle where it will remain fixed.
Do not lift the panel any further when it stops
with a clicking sound.
(2) Closing the front panel
1) PushthePUSHon bothlowerendsof the front
panel.
2) Close the panel firmly.
(3) If theTEMPORARY switch is set to AUTO
1) The air conditioner operates automatically by
selecting the cooling, dry, fan only mode de-
pending on the room temperature.
(4) If theTEMPORARY switch is set to COOL
1) The air conditioner operates in the cooling
mode (at a low fan speed).
Note:
• If the TEMPORARY switch is set to AUTO or
COOL, the remote controller is not usable.
FAN-ONLY ECONO. TIMER OPERATION
OPERATION lamp (green)
TIMER lamp (yellow)
ECONO. lamp (green)
FAN ONLY lamp (red)
REMOTE CONTROLTEMPORARY
AUTO
TEST RUN
(COOL)
Fig. 8-2
8-2. Functions on Remote Controller
(a) Infrared signal emitter
Transmits a signal to the indoor unit.
(b) START/STOP button
• Push the button to start operation.
(A receiving beep is heard.)
• Push the button again to stop operation
(A receiving beep is heard.)
• If no receiving sound is heard from the indoor
unit, push the button twice.
(c) Mode select button (MODE)
Push this button to select modes. Each time you
pushthebutton, a modeisselectedin asequence
that goes from AUTO, COOL, DRY, FAN ONLY,
and back to AUTO. (A receiving beep is heard).
(d) Temperature button (TEMP.)
The set temperature is increased to 30°C.
The set temperature is decreased to 17°C.
(A receiving beep is heard.)

– 17 –
(e) Fan speed button (FAN)
• Push this button to select fan speed.
• When you select AUTO, the fan speed is au-
tomatically adjusted according to the room
temperature.You can also manually select the
desired fan speed from three settings.
(A receiving beep is heard.)
(f) Auto louver button (AUTO)
• Push this button to swing the louver.
(A receiving beep is heard.)
• Push this button again to stop louver swing-
ing. (A receiving beep is heard.)
(g) Set louver button (SET)
• To adjust the air flow direction by the wireless
REMOTE CONTROLLER during the air con-
ditioner operation, push this button.
(A receiving beep is heard.)
• While this button is kept depressed, the re-
ceiving tone continuously sounds.
(h) Off timer button (OFF)
• Push this button to set the OFF timer.
(i) On timer button (ON)
• Push this button to set the ON timer.
(j) Reserve button (RSV)
• Push this button to reserve timer settings.
(A receiving beep is heard.)
(k) Cancel button (CNL)
• Push this button to cancel on timer and off
timer (A receiving beep is heard.)
(l) Economy button (ECONO.)
• Push this button to set the economical opera-
tion mode of the air conditioner.
(A receiving beep is heard.)
MODE
TEMP.
FAN
AUTO
COOL
DRY
FANONLY
AUTO
LOW
MED.
HIGH
START/STOP
ECONO. FAN
AUTO SET
MODE
TIMER
ON OFF RSV CNL
TOSHIBA
TEMP.
(d)
(e)
(g)
(c)
(k)
( j )(h)
( i )
( f )
( l )
(b)
(a)
Fig. 8-3

– 18 –
8-3. Names and Functions of Indicators
on Remote Controller
(a) Transmission indicator
• Thistransmissionindicatorlights whenremote
controller transmits signals to the indoor unit.
(b) ON/OFF display
• Displayed by pushing the START/STOP but-
ton.
• Push the START/STOP button again to dis-
appear.
(c) MODE display
• Displays the current operation mode.
(d) TEMP> display
• Displays the temperature setting
(17°C to 30°C)
• When you set the operating mode to FAN
ONLY, no temperature setting is displayed.
(e) ECONO. display
• Displayed by pushing the ECONO. button.
• Push the ECONO. button again to disappear.
(f) FAN speed display
• Displays the selected fan speed. AUTO and
three fan speed levels “LOW”, “MED”, “HIGH”
can be indicated.
• Displays AUTO when the operating mode is
either AUTO or DRY.
(g) TIMER display
The time set for timer operation is indicated.
Note:
• In Fig. 8-4, all displays are indicated for the sake
of clarity. During operation, only the relevant dis-
plays will be shown on the remote controller.
Fig. 8-4
8-4. Handling the Remote Controller
8-4-1. Location of the Remote Controller
Keeptheremotecontroller where itssignalscanreach
the receiver of the air conditioner (a distance of 7m is
allowed.)
Fig. 8-5
8-4-2. Remote Controller Mounting Fixture
A mounting fixture for the remote controller is sup-
plied with it.
(1) Installing the mounting fixture
Before you actually install the mounting fixture
on a wall or the pillar, check whether the remote
control unit signals from the location where you
will install the fixture can be received by the in-
door unit.
Fig. 8-6
(2) Mounting and removing the remote controller
To mount, hold the remote controller parallel to
the mounting fixture and push it in fully. To re-
move, slide the remote controller upwards and
out from the mounting fixture.
Fig. 8-7
MODE FAN
AUTO
COOL
DRY
FANONLY
AUTO
LOW
MED.
HIGH
TEMP.
Hr.ON OFF TIMER
(c)
( g )
(e) (a) (d) (b) ( f )
7m

– 19 –
8-4-3. Replacing Batteries
The remote controller uses two alkaline dry batteries
(LR03).
(1) Remove the cover of the battery compartment at
the back of the remote controller by sliding it out
in the direction of the arrow.
Remove the used batteries and insert new bat-
teries.
(2) Press a coin or the similar object against the unit
to reset, and perform resetting. Then, close the
rear lid.
(Once the cell has been replaced, the controller
maymalfunction.Perform resetting (ACL)accord-
ingly.)
Fig. 8-8
Notes:
• When replacing batteries, do not use used bat-
teries or batteries of a different type. Such use
may cause the remote controller to malfunction.
• Ifyoudonotuse the remote controller overalong
period, remove the batteries. Otherwise, battery
leakage may damage the remote controller.
• The average battery life during normal use is ap-
proximately one year.
• Replace the batteries when there is no receiving
beep from the indoor unit or if the transmission
indication lamp on the remote control unit fails to
light.
CAUTIONS:
• The air conditioner will not operate if curtains
doors or other materials block the signal from
the remote controller to the indoor unit.
• Prevent any liquid from failing into the remote
controller.
Do not expose the remote controller to direct
sunlight or heat.
• If the infrared signal receiver at the indoor unit
isexposedtodirect sunlight, the airconditioner
may not function properly.Use curtains to pre-
vent the sunlight from falling on the receiver.
• If the room using the air conditioner has fluo-
rescentlightingwithelectronicstarters, signals
may not be properly received. If you are plan-
ningtousesuchflorescent lamps, consult your
local dealer.
• If other electrical appliances react to the re-
mote control, either move these appliances or
consult your local dealer.
display may be restored.
out abnormal, the normal
Be careful not
to reverse the
+ position and
the - position.
Press a coin or
the similar object.
If the display should turn

– 20 –
OPERATING MODE:
Once you select the operating mode, the operating
conditions are saved in the unit’s microcomputer
memory.
Thereafter, the air conditioner will start operating
under the same conditions when you simply push
the START/STOP button of the remote controller.
8-5. Automatic Operation
When you set the air conditioner in AUTO mode, it
will automatically select cooling, or fan only operation
depending on the room temperature.
8-5-1. Operation Steps
Start
• The OPERATION lamp (green) on the display
panel of the indoor unit starts flashing.
(1) Mode button
• Select AUTO.
(2) TEMP. button
• Push the TEMP. button.
• Normally, set it between 21°C to 28°C.
(3) START/STOP button
• Push this button to start the air conditioner.
• The OPERATION lamp (green) on the display
panel of the indoor unit lights. The operating
mode is selected in accordance with the room
temperatureandoperation startsafterapproxi-
mately 3 minutes.
Stop: START/STOP button
• Push this button again to stop the air conditioner.
Table 8-1
Fig. 8-9
Note:
• If the AUTO mode is uncomfortable, you can se-
lect the desired conditions manually.
• When you select the AUTO mode, you do not
have to set the fan speed. The FAN speed dis-
play will show AUTO and the fan speed will be
automatically controlled.
Room temperature of operation
The set temperature +1°C or higher
(when hot)
The set temperature –1°C to +1°C
Cooling operation
Fan only operation
Performs the cooling operation at a tempera-
ture 1°C higher than the setting.
Performs the fan only oepration (low speed)
while monitoring the room temperature.
Operating conditions
MODE
TEMP.
FAN
AUTO AUTO
START/STOP
ECONO. FAN
AUTO SET
MODE
TIMER
ON OFF RSV CNL
TOSHIBA
TEMP.
(3)
(1)
(2)