Toshiba RAS-30NKP2B-1 User manual

SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-30NKP2B-1 / RAS-30N2A2B
RAS-30NKP-AR-1 / RAS-30N2A-AR
FILE NO. SVM-06017
July 2006

−1−
FILE NO. SVM-06017
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2
Outdoor Unit
3. WIRING DIAGRAM
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit (RAS-30NA2B)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-30NKP2B-1 / RAS-30N2A2B
5-2 RAS-30NKP-AR-1 / RAS-30N2A-AR
6. CONTROL BLOCK DIAGRAM
7. OPERATION DESCRIPTION
7-1 Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 ECO Mode
7-4 Hi POWER Mode
7-5
Low-Temperature Limit Control
7-6Auto Restart Function
7-7Filter Check Lamp
7-8Self-Cleaning function
8. INSTALLATION PROCEDURE
8-1 Safety Cautions
8-2 Installation Diagram of Indoor and Outdoor Units
8-3 Installation
8-4 Indoor Unit
8-5 Outdoor Unit
8-6 How to Set Remote Control Selector Switch
9. TROUBLESHOOTING CHART
9-1 Troubleshooting Procedure
9-2 Basic Check Items
9-3 Primary Judgement
9-4 Self-Diagnosis by Remote Control (Check Code)
9-5 How to Diagnose Faulty Parts
9-6 Troubleshooting for Indoor Unit
9-7 Troubleshooting for Wiring (Interconnect Cable)
9-8 Troubleshooting for Air Purifier and Minus Ion
9-9 Troubleshooting for Remote Control
8-7 Others
4-3 Outdoor Unit (RAS-30N2A-AR)
7-9QUIET Mode
7-10 COMFORT SLEEP mode

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FILE NO. SVM-06017
10. PART REPLACEMENT
10-1 Indoor Unit
10-2 Outdoor Unit
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E-Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit (RAS-30N2A2B)
11-4Outdoor Unit (RAS-30N2A-AR)

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FILE NO. SVM-06017
RAS-30NKP2B-1
RAS-30N2A2B
ITEM Cooling
Capacity 220V
kW 7.00
Phase 1∅
Power source V220V
Hz 60
Power consumption kW
3800
Power factor %96
Running Indoor A
0.4
current Outdoor A17.60
Starting current A81
Moisture removal Liter/hr
Noise Indoor (H/M+/M/L+/L)dB 52/50/47/45/42
Outdoor (220) dB 58
Refrigerant Name of refrigerant R-22
Rated amount kg 1.90
Refrigerant control Capillary tube
Gas side sizemm∅15.88 
Connection type Flare connection
Liquid side sizemm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m15*1
(One way) 25*2
Maximum height m10
difference
INDOOR UNIT RAS-30NKP2B-1
Height mm 298
Dimensions Width mm 998
Depth mm 220
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h1200
Air volume Medium fan m3/h1050
Low fan m3/h 900
Fan motor output W
30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-30N2A2B
Height mm 690
Dimensions Width mm 880
Depth mm 310
Net weight kg 69
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h3558
Fan motor output W 70
Compressor Model NHJ47NAHT
Output W 2200
Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 52
1. SPECIFICATIONS
MODEL
15
2.1
Note *1 Chargeless pipe
*2 Maximum pipe

– 4–
FILE NO. SVM-06017
MODEL
RAS-30NKP-AR-1 / RAS-30N2A-AR
ITEM
Capacity kW
240 V
7.95
Phase 1∅
Power source V
Hz
Power consumption W3450
Power factor %
Running current A
Indoor/Outdoor
Starting current A
Moisture removalLiter/hr
Noise Indoor (H/M+/M/L+/L) dB
Outdoor (230V) dB
Refrigerant Name of refrigerant
Rated amount kg
Refrigerant control
Gas side size mm ∅15.88
Connection type Flare connection
Liquid side size mm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m15*1
(One way) 25*2
Maximum height
difference
Height mm 298
Dimensions Width mm 998
Depth mm 220
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 1200
Air volume Medium fan m3/h 975
Low fan m3/h 650
Fan motor output W 30
Air filter Honeycomb woven filter with PP frame
Height mm 690
Dimensions Width mm880
Depth mm 310
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 3380
Fan motor output W 65
Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 52
m
Capillary tube
2.00
R22
59
53/50/47/43/40
2.7
81
0.4/15.10
230
93
50
220V-240V
Cooling
INDOOR UNIT
RAS-30NKP-AR-1
15
OUTDOOR UNIT RAS-30N2A-AR
Net weight kg 68
Compressor Model NH56VNHT
Output W2700
220 V
8.00
3200
94
0.4/15.10

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FILE NO. SVM-06017
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
Refrigerant RAS-30NKP2B-1 / RAS-30N2A2B
*1 No need to charge 15m or less
extra refrigerant
*2 Need to charge Over 15m up to 25m ( 40g/m)
extra refrigerant
JIS B8615-1 SSA 385, 386
Indoor unit inlet air tempe (DB) 27°C 29°C
(WB) 19°C 19°C
Outdoor unit inlet air temper (DB) 35°C 46°C
(WB) 24°C 24°C
Temperature
Condition RAS-30NKP2B-1
RAS-30NKP-AR-1
RAS-30N2A-AR
RAS-30N2A2B
RAS-30NKP-AR-1 / RAS-30N2A-AR

– 6–
FILE NO. SVM-06017
2.CONSTRUCTIONVIEWS
Connecting pipe (0.33m)
(For 13 series ; Flare ∅9.52
For 16 series ; Flare ∅12.7)
26
4519040
32
590
320
620
235 235
215 215
9090
275 45
150150 160160
120 80
Hanger
Hanger
Hanger
Hanger Hanger
Drain hose (0.54m) Connecting pipe (0.43m)
(Flare ∅6.35)
For stud bolt
(∅8~∅10)
For stud bolt (∅6)
Installation plate outline
Center line
Minimum
distance
to ceiling
170 or more
Minimum
distance
to ceiling
170 or more
65 or more
Minimum
distance
to ceiling
6
64
60
60
48
6
218
48
53
Knock out system
Front panel
Knock out system
Heat exchanger
Air filter
Air inlet
Air outlet
275
790
2-1. Indoor Unit
57 18
160
Wireless remote control

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FILE NO. SVM-06017
2-2. Outdoor Unit
A
∅12x18 hole
Detail Drawing
∅25 Drain outlet
52
4-∅12x18 holes
(for ∅8 –ø10 anchor bolt)
Handle
Handle
Mounting dimension of anchor bolt
600
100 or
more 600 or
more
600
or more
100
or more Air outlet
Air inlet
4-∅12x18
for ∅8 –∅10
anchor bolt
Electric
Parts cover
Liquid side
(Flare ∅6.35)
Gas side
(Flare ∅15.88)
Service Port
A
600
340
23
68
120
63.8
340
600
27
50
690
880 74
140
88
310
340 (pitch) 1212
364

–8 –
:
:
:
:
:
:
:
:
:
:
BROWN
RED
WHITE
YELLOW
BLUE
BLACK
GRAY
PINK
ORANGE
GREEN &
BRW
RED
WHI
YEL
BLU
BLK
GRY
PNK
ORN
GRN&YEL
COLOR IDENTIFICATION
1
2
3
4
65
PNK YEL
ORN
RED BRW
BLU
1
2
3
4
65
6
5
4
3
127 8 9
10
6
5
4
3
1
BLU
2
11
3
7 8 9 10
6
5
4
3
127 8 9
10
6
5
4
3
127 8 9
10
1
3
4
651
3
4
65
INFRARED RAYS RECEIVE
AND INDICATION PARTS
HEAT
EXCHANGER
SENSOR
(TC)
THERMO
SENSOR
(TA)
12
1212
12
CN03 CN01
CN25
CN13
BLK BLK BLK BLK
F01 FUSE
RY04
DB01
FAN MOTOR
LOUVER
MOTOR
MAIN P.C. BOARD
(MCC-821)
L01
BLU BLU BLU BLU BLU BLU BLU BLU WHI
DC MOTOR
CN 07 CN 10
C02
C06
IC02
IC01
IC
T01
IC04
C15
BLK
WHI
GRN&YEL
RED
C01
R01
R09
R21
R22
BLK
P04 SG01
DSA VARISTOR
T6.3A 250 V
DC15V
DC0V
DC12V
DC7V
DC0V
CN30
CN31
CN27
:GREENGRN YELLOW
3
12
i
LN3
12
i
GRN&YEL
RED
RED
BLK
RED
BLK
BLK CHASSIS
GRY
POWER SUPPLY
220~240V ~ 50Hz
SPARK KILLER
MAGNETIC CONTACTOR
BLK BLK
RED
A2 A1
52C
1/L1 2/T2
3/L2 4/T2
5/L3 6/T3
COMPRESSOR
WHI
PNK C
S
R
CAPACITOR
CAPACITOR
WHI
RED
FAN MOTOR
BLK
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
INDOOR
UNIT
OUTDOOR
UNIT
FILE NO. SVM-06017
3. WIRING DIAGRAM
(For RAS-30N2A-AR)
220 ~ 60Hz
(For RAS-30N2A2B)
COMPRESSOR TERMINAL
(For RAS-30N2A2B)
COMPRESSOR TERMINAL
(For RAS-30N2A-AR)

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FILE NO. SVM-06017
4. SPECIFICATION OF ELECTRICAL PARTS
4-1. Indoor Unit
4-2. Outdoor Unit (RAS-30N2A2B)
No. Parts name Type Specifications
Output (Rated) 2300 W, 2 poles, 1 phase, 208/230 V, 60 Hz
1Compressor NH47NAHT Winding resistance (Ω)C-R C-S
(at 25°C) 0.52 1.28
Output (Rated) 70 W, 6 poles, 1 phase, 220 V, 60 Hz
Winding resistance (Ω) Red-Black White-Black
2 Fan motor (for outdoor)
(at 20°C) 40.8 84.8
3Running capacitor 451355L
AC 450 V, 3.5µF
(for fan motor)
4Running capacitor RS44B606U0220S AC 440 V, 60µF
(for compressor)
5 Magnetic contactor A35 220 V, 60 Hz
STF-200-70K
No. Parts name Type Specifications
1Fan motor (for indoor) ICF-340-30-2 DC 310-340V, 30W
2 Thermo sensor (TA-sensor) ——— 10 kΩat 25°C
3Switchins transformer (T01) SWT-77 Output DC 7V, 12Va and 12Vb
4Microcontroller TMP87CM40ANG 6G60
5 Heat exchanger sensor ——— 10 kΩat 25°C
(TC-sensor)
6 Line filter (L01) SS11V-R07190 19 mH, AC 0.7 A
7Diode (DB01) D3SBA60 4 A, 600 V
8Capacitor (C03)EKMH451VSN121MQ35S 120µF, 450 V
9 Fuse (F01) TSCR T6.3 A, 250 V
10 Switching IC (IC01) MA8920 5 A, 900 V
11 Varistor (R09, R10)15G561K 560 V
12 Resistor (R01) RF-5TK4R81.8 Ω, 5 W
13 Louver motor MP35EA12 Output (Rated) 2 W, 10 poles, 1 phase,
DC 12 V

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FILE NO. SVM-06017
4-3. Outdoor Unit (RAS-30N2A-AR)
No. Parts name Type Specifications
Output (Rated) 2700 W, 2 poles, 1 phase, 220 - 240 V, 50 Hz
1Compressor NH56VNHT Winding resistance (Ω)C-R C-S
(at 25°C)
Output (Rated) 42 W, 6 poles, 1 phase, 220 - 240 V, 50 Hz
2Fan motor (for outdoor) MMF-230-65I Winding resistance (Ω)Red-BlackWhite-Black
(at 20°C) 71.2 139.0
3Running capacitor 451355L AC 450 V, 3.5µF
(for fan motor)
4Running capacitor RSS44B606U0220S AC 440 V, 60µF
(for compressor)
5Magnetic contactor A35 220 - 240 V, 50 Hz
0.66 1.58

– 11 –
FILE NO. SVM-06017
*SASO Standard’s condition
*Standard 0.40 10.0 High 29/19 46/24
Cooling *High temperature 0.50 13.0 High 32/23 52/31*
Low temperature 0.25 1.0 Low21/15 21/15
50Hz Fan speed
(indoor)
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
Standard
pressure P
(MPaG)
Surface temp. of heat
exchanger interchanging
pipe T (°C)
5. REFRIGERATION CYCLE DIAGRAM
5-1. RAS-30NKP2B-1 / RAS-30N2A2B
Evaporator
Indoor unit
Cross flow fan
Condenser
Propeller fan
Outdoor unit
Cooling
O.D.:15.88mm O.D.:6.35mm
Cooling
Packed valve
Gas container connection (Reinstall etc.)
(
∅ 15.88 ) Packed valve ( ∅ 6.35)
0.39m
(Connecting pipe)
∅ 15.88
0.49m
(Connecting pipe)
∅ 6.35
T
P
Capillary tube
∅ 2.4x500 S
Refrigerant
R-22 1.90kg
Mark ( ) means check points of Gas Leak
Note :Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
Compressor NHJ47NAHT
Bypass Capillary
∅1.0x1000 l
Dryer

–12–
FILE NO. SVM-06017
Note : Measure the heat exchanger temperature at the center of U-bend.(By means ofTC sensor.)
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
Standard 0.38 8.0 High 27/19 35/24
Cooling High temperature 0.5213.0 High 32/23 52/31
Low temperature 0.30 2.0 Low21/15 21/15
Fan speed
(indoor)
50 Hz Standard
pressure
P
(MPaG)
Indoor unit
Cross flow fan
Condenser
Propeller fan
Outdoor unit
O.D.:15.88 mm O.D.:6.35 mm
Packed valve
(∅15.88) Packed valve (∅6.35)
T
P
Refrigerant
R22 2.00 kg
Evaporator
0.39 m
(Connecting pipe)
∅15.88
0.49 m
(Connecting pipe)
∅6.35
Mark ( ) means check points of Gas Leak
Capillary tube
∅2.4x800 s
Surface temp. of heat
exchanger interchanging
pipe
T
(°C)
Dryer
5-2.RAS-30NKP-AR-1 / RAS-30N2A-AR
Bypass Capillary
∅1.0x1000 l
Accumulator
NH56VNHT
Compressor

−13−
FILE NO. SVM-06017
REMOTE CONTROL
Heat Exchanger Sensor
Relay RY03
Outdoor Unit
Outdoor unit
ON/OFF Signal
Relay Driver
Indoor Unit Control Panel
Temperature Sensor
Infrared Rays Signal Receiver
Initiallizing Circuit
Clock Frequency
Oscillator Circuit
Power Supply
Circuit
Noise Filter
From Outdoor Unit
220 ~ 240 V AC 50 Hz
M.C.U.
Functions
•Louver Control
•3-minute Delay at Restart for Compressor
•Motor Revolution Control
•Processing
•Timer
Louver ON/OFF Signal
Louver Driver
Operation
Display
Timer
Display
Filter Sign
Display
Fan Only
Sign Display
Indoor
Fan Motor
Hi Power
Sign Display
Louver Motor
Infrared
Rays
Remote
Control
(Temperature Processing)
6. CONTROL BLOCK DIAGRAM
Operation ( )
Operation ( )
Remote Control
Operation Mode Selection
AUTO, COOL, DRY, FAN ONLY
Temperature Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver Auto Swing
Louver Direction Setting
ECO
Hi power
TIMER 1.3.5.9H
Infrared Rays
COMFORT SLEEP
QUIET

– 14–
FILE NO. SVM-06017
7. OPERATION DESCRIPTION
7-1-1. Louver control
(1)Vertical air flow louver
Position of veritcal air flow louver is automatically
controlled according to the operation mode.
Besides, position of vertical air flow louver can be
arbitrarily set by pressing [SET] button.
The louver position which is set by [SET] button
is stored in the microcomputer, and the louver is
automatically set at the stored position for the next
operation.
(2)Swing
If [SWING] button is pressed when the indoor unit is
in operation, the vertical air flow louver starts
swinging.When [SWING] button is pressed again, it
stops swinging.
7-1-2. Indoor fan control (DC Fan motor)
(1)The indoor fan is operated by the stepless speed
change DC motor.
(2)For air flow level, speed of the indoor fan motor is
controlled in five steps (LOW, LOW+, MED, MED+
and HIGH). If AUTO mode is selected, the fan
motor speed is automatically controlled by the
difference between the preset temperature and the
room temperature.
7-1. Outline of Air Conditioner Control
This is a fixed capacity type air conditioner, which uses
a DC motor for an indoor fan.The DC motor drive
circuit is mounted in the indoor unit.And electrical
parts 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 transfers the operation commands
to the outdoor unit controller.
The outdoor unit controller receives operation
commands from the indoor unit, and operates the
outdoor fan motor and the compressor.
(1) Role of indoor unit controller
The indoor unit controller receives the operation
commands from the remote control and executes
them.
•Temperature measurement at the air inlet of the
indoor heat exchanger by the indoor
temperature sensor
•Temperature setting of the indoor heat
exchanger by the heat exchanger sensor
•Louver motor control
•Indoor fan motor operation control
•LED display control
•Transferring of operation commands to the
outdoor unit
•Receiving of information of the operation status
and judging of the information or indication of
error
(2) Role of indoor unit controller
The outdoor unit controller receives the operation
commands from the indoor controller and
executes them.
•Compressor operation
control
•Operation control of
outdoor fan motor
•Turning off the compressor and outdoor fan
when the outdoor unit receives the shutdown
command
Operations according
to the commands from
the indoor unit
LOW+ =
MED+=
LOW+MED
2
MED+HIGH
2
Table 7-1-1
FAN TAP
Cooling
H
MSL
OPERATION Fan only
L-
Dry
M
MODE
UH H
M
RAS-30NKP2B-1 rpm
Air flow volume (m /h)
3
Model
1050
UL
L
1700
H
UH
UH L
L
L-
L- UL
ULSL
SL
1200
1700
1200
1500
900
1300
800
1200
700
1100
500
900
600
1000
RAS-30NKP-AR-1 rpm
Air flow volume (m /h)
3
1700
1200
1700
1200
975
1400
650
1050
500
900
400
800
300
700
300
700

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FILE NO. SVM-06017
7-2. Description of Operation Circuit
(1) When turning on the breaker, the operation lamp
blinks.This means that the power is on (or the
power supply is cut off.)
(2) When pressing [ ] button on the
remote control, receiving beep sounds from the
indoor unit, and the next operation is performed
together with opening the vertical air flow louver.
(3) Once the operation mode is set, it is memorized in
the microcomputer so that the previous operation
can be effected thereafter simply by pressing
[] button.
7-2-1. Fan only operation
([MODE] button on the remote control is set
to the fan only operation.)
(1) When [FAN] button is set to AUTO, the indoor fan
motor operates as shown in Fig.7-2-1.When
[FAN] button is set to LOW, LOW+, MED, MED+or
HIGH, the motor operates with a constant air flow.
NOTE:
*1: The values marked with *1 are calculated and
controlled by the difference in motor speed
between M+ and L–.
7-2-2. Cooling operation
([MODE] button on the remote control is set
to the cooling operation.)
(1) The compressor, outdoor fan and operation
display on the remote control are controlled as
shown in Fig.7-2-2.
Fig. 7-2-2
(2) When [FAN] button is set to AUTO, the indoor fan
motor operates as shown in Fig. 7-2-3.When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.
NOTE:
*1: The values marked with *1 are calculated and
controlled by the difference in motor speed
between M+ and L–.
Fig. 7-2-3 Setting of air flow [FAN:AUTO]
(Preset temp.: 24°C
+2
+2.5
+3
+1.5
+1
+0.5
0
M+
*1
*1
*1
L–
(Room temp.) –(Preset temp.)
Preset
temp.
0.5
0
Preset
temp.
ON ON
OFF OFF OFF ON
Compressor
4-way valve
Outdoor fan
OPERATION
display
(Room temp.)
−
(Preset temp.)
*1
*1
*1
L–
+3
+2.5
+2
+1.5
+1
+0.5
-0.5
0
M+
(Room temp.) –(Preset temp.)
Preset
temp.
operation cannot be set.
Fig. 7-2-1 Setting of air flow [FAN:AUTO]
(2) The Hi POWER, ECO and COMFORT SLEEP

–16 –
FILE NO. SVM-06017
7-2-3. Dry operation
([MODE] button on the remote control is set
to the dry operation.)
(1) The compressor, 4-way valve, outdoor fan and
operation display on the remote control are
controlled as shown in Fig.7-2-4.
Fig. 7-2-4
(2) The microprocessor turns the compressor on and
off at the regular intervals (4 to 6 minutes).While
the compressor is turning off, the indoor fan motor
operates in the SUPER LOW position.
The pattern of operation depending on the relation
between room temperature and preset
temperatures is shown in Fig. 7-2-5.
Fig. 7-2-5
(3) [FAN] button on the remote control is set to AUTO
only.
(4) The ECO and Hi Power operations can not be set.
7-2-4. Automatic operation
([MODE] button on the remote control is set
to the automatic operation.)
(1) One of 2 operations (Cooling, Fan only) is
selected according to difference between the
preset temperature and the room temperature at
which the automatic operation has started, as
shown in Fig.7-2-6.The Fan only operation
continues until the room temperature reaches a
level at which another mode is selected.
(2) Temporary Auto
When the TEMPORARY button on the indoor unit is
pushed, the preset temperature is fixed at 24°C and
the indoor unit is controlled as shown in Fig.7-2-6.
Fig. 7-2-6
+4
0
(Room temp.) –(Preset temp.)
°C Cooling operation
The louver moves to the position
same as Hi Power operation.
Cooling operation
Fan only operation
RAS-30NKP-AR-1
(Room temp.)–(Preset temp.)
Preset
temp.
ON
+3
+2
+1
0
OFF
Outdoor fan
OPERATION
display
Compressor
ON:6min.
OFF:4min.
ON:5min. OFF:5min.
OFF
ON:6min. OFF:4min.
ON:5min. OFF:5min.
Room temp.
Preset temp.+1
Preset temp.
Compressor
Outdoor fan
Indoor fan L.
* S.L. S.L.L. L. S.L. L.
ON ON ON ON
OFF OFF OFF
* Super Low
RAS-30NKP2B-1

–17 –
FILE NO. SVM-06017
7-3. ECO Mode
([ECO] button on the remote control is
pressed.)
When [ECO] button is pressed while the indoor unit is
in Cooling, Heating or Auto operation, ECO mark is
indicated on the display of the remote control and the
unit operates quietly and mildly controlling air flow.
(1) Cooling operation
•The preset temperature is changed
automatically as shown in Fig.7-3-1.
(The value of the preset temperature on the
remote control does not change.)
•Fan speed →LOW
Fig. 7-3-1
+2
+1
Preset temp.
1H 2H TIME0H
(˚C)
ECO button
is pressed
Preset temp.
is changed
Preset temp.
is changed
7-4. Hi POWER Mode
([Hi POWER] button on the remote
control is pressed.)
When [Hi POWER] button is pressed while the indoor
unit is in Auto, Cooling or Heating operation, Hi
POWER mark is indicated on the display of the remote
control and the unit operates as follows.
(1) Automatic operation
•The indoor unit operates in according to the
current operation.
(2) Cooling operation
•The preset temperature drops 3°C.
(The value of the preset temperature on the
remote control does not change.)
•If the room temperature is higher than the
setting temperature by 3.5°C or more, the
horizontal louver moves to the Hi POWER
position automatically.Then when the room
temperature is °C less than the setting temperature
the horizontal louver returns automatically.
•FAN speed : [AUTO]
If the temperature is higher than the setting
temperature by 3.5°C or more, the air
conditioner operates at maximum airflow
level. If the temperature is higher than the setting
temperature by less than 3.5°C, the air
air conditioner operates at normal airflow level
•FAN speed : One of 5 levels
than the setting temperature by less than 3.5°C,
the air conditioner operates at normal airflow
level.
(3) The Hi POWER mode can not be set in Dry or
Fan only operation.
If the temperature is higher than the setting
temperature by 3.5 °C or more, the air
conditioner operates at higher consecutive
airflow level. If the room temperature is higher
7-5. Low-Temperature Limit Control
6
Heat exchanger
temperature
2
(˚C)
The microprocessor detects the indoor heat exchanger
temperature to prevent the indoor heat exchanger from
freezing.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-6-1.
Fig. 7-5-1
Compressor
Outdoor fan
ON
Less than 2°C continues for
5 minutes
OFF

–18 –
FILE NO. SVM-06017
Operation Motions
Push [TEMPORARY] button for more The unit is on standby.
than three seconds.
The unit starts to operate. The green lamp is on.
After approx. three seconds,
The unit beeps three times The lamp changes from
and continues to operate. green to orange.
If the unit is not required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it off.
7-6. Auto Restart Function
The indoor unit is equipped with an automatic
restarting function which allows the unit to restart
operating with the set operating conditions in the event
of power supply being accidentally shut down.The
operation will resume without warning three minutes
after power is restored.
This function is not set to work when shipped from the
factory.Therefore it is necessary to set it to work.
When the unit is on standby (Not operating)
When the unit is in operation
7-6-1. How to set auto restart function
To set the auto restart function, proceed as follows:
The power supply to the unit must be on; the function
will not set if the power is off.
Push the [TEMPORARY] button located in the center
of the front panel continuously for three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the
event of power supply being accidentally shut down.
Operation Motions
Push [TEMPORARY] button for more The unit is in operation. The green lamp is on.
than three seconds.
The unit stops operating. The green lamp is turned off.
After approx. three seconds,
The unit beeps three times.
If the unit is required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it on.
•While this function is being set, if the unit is in
operation, the orange lamp is on.
•This function can not be set if the timer operation
has been selected.
•When the unit is turned on by this function, the
louver will not swing even though it was swinging
automatically before shutting down.
•While the filter check lamp is on, the [TEMPORARY]
button has the function of filter reset button.
→→→→
03S
03S
TEMPORARYbutton
TEMPORARYbutton

–19 –
FILE NO. SVM-06017
7-6-2. How to cancel auto restart function
To cancel auto restart function, proceed as follows:
Repeat the setting prodedure: the unit receives the
signal and beeps three times.
The unit will be required to be turned on with the
remote control after the main power supply is turned
off.
When the unit is on standby (Not operating)
When the unit is in operation
•While this function is being set, if the unit is in
operation, the orange lamp is on.
7-6-3. Power failure during timer operation
When the unit is in Timer operation, if it is turned off
because of power failure, the timer operation is
cancelled.Therefore, set the timer operation again.
7-7. Filter Check Lamp
When the elapsed time reaches 1000 hours, the filter
check lamp indicates. After cleaning the filters, turn off
the filter check lamp.
7-7-1. How to turn off filter check lamp
(1) Press [FILTER] button on the remote control.
(2) Push [TEMPORARY] button on the indoor unit.
Note:
If [TEMPORARY] button is pushed while the filter
check lamp is not indicating, the indoor unit will start
the Automatic Operation.
Operation Motions
Push [TEMPORARY] button for more The unit is on standby.
than three seconds. The unit starts to operate. The orange lamp is on.
After approx. three seconds,
The unit beeps three times The lamp changes from
and continues to operate. orange to green.
If the unit is not required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it off.
→
Operation Motions
Push [TEMPORARY] button for more The unit is in operation. The orange lamp is on.
than three seconds. The unit stops operating. The orange lamp is turned off.
After approx. three seconds,
The unit beeps three times.
If the unit is required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it on.
→→
→
03S
03S
TEMPORARYbutton
TEMPORARYbutton