Toshiba RAS-18SKV-E RAS-22SKV-E RAS-18SKVR-E RAS-22SKVR

FILE NO. SVM-10050-1

SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

Indoor Unit

<High Wall, Heat Pump Type>

RAS-18

, 22

SKV-E

RAS-

18,

22SKV

R

-

E

RAS-18

, 22

SKV2-E

RAS-

18,

22SKV-

A

RAS-18

, 22SKVR-A

RAS-

18,

22SKV-ND

Outdoor Unit

<Heat Pump Type>

RAS-18

, 22

SAV-E

2

RAS-

18,

22SAV

2

-

E

RAS-18

, 22

S

A

V

2

-A

R410A

Revised on May, 2010

FILE NO. SVM-10050

CONTENTS

1. SAFETY PRECAUTIONS .......................................................................... 3

2. SPECIFICATIONS ...................................................................................... 5

3. REFRIGERANT R410A ...........................................................................

12

4. CONSTRUCTION VIEWS ........................................................................ 20

5. WIRING DIAGRAM .................................................................................. 23

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 2 4

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 2 5

8. CONTROL BLOCK DIAGRAM ................................................................ 2 8

9. OPERATION DESCRIPTION ................................................................... 31

10. INSTALLATION PROCEDURE ................................................................ 5 6

11. HOW TO DIAGNOSE THE TROUBLE ...................................................... 6 9

12. HOW TO REPLACE THE MAIN PARTS ................................................... 93

13. EXPLODED VIEWS AND PARTS LIST ................................................. 1 10

– 2 –

FILE NO. SVM-10050

1. SAFETY PRECAUTIONS

For general public use

Power supply cord of outdoor unit shall be more than 1.5 mm ² (H07RN-F or 60245IEC66) polychloroprene sheathed flexible cord.

• Read this “SAFETY PRECAUTIONS” carefully before servicing.

• The precautions described below include the important items regarding safety. Observe them without fail.

• After the servicing work, perform a trial operation to check for any problem.

• Turn off the main power supply switch (or breaker) before the unit maintenance.

CAUTION

New Refrigerant Air Conditioner Installation

• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT

DESTROY OZONE LAYER.

R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the working pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the adoption of the new refrigerant, the refrigeration machine oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into the new type refrigerant R410A air conditioner circuit.

To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging port on main unit and installation tools are different from those used for the conventional refrigerant units.

Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does not enter. Moreover, do not use the existing piping because there are some problems with pressure fittings and possible impurities in existing piping.

CAUTION

TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY

This appliance must be connected to the main power supply by a circuit breaker or a switch with a contact separation of at least 3 mm.

DANGER

• ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO INSTALL/

MAINTAIN THE AIR CONDITIONER.

INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE

ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

DANGER: HIGH VOLTAGE

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts on the P.C. board by hand.

• CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCOR-

RECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND

INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

– 3 –

FILE NO. SVM-10050

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE

TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE

THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT

REGISTERS, FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CARE-

FUL NOT TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY

OTHER GASEOUS BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS

MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL

BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE

PERSONNEL INJURIES.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE

WORK AND THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM.

IF THE REFRIGERANT GAS IS HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS

MAY RESULT.

WARNING

• Never modify this unit by removing any of the safety guards or bypass any of the safety interlock switches.

• Do not install in a place which cannot bear the weight of the unit. Personal injury and property damage can result if the unit falls.

• After the installation work, confirm that refrigerant gas does not leak.

If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas may generate.

• The electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make sure the air conditioner uses an exclusive circuit.

An insufficient circuit capacity or inappropriate installation may cause fire.

• When wiring, use the specified cables and connect the terminals securely to prevent external forces applied to the cable from affecting the terminals.

• Be sure to provide grounding.

Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.

• Conform to the regulations of the local electric company when wiring the power supply.

Inappropriate grounding may cause electric shock.

CAUTION

• Exposure of unit to water or other moisture before installation may result in an electrical short.

Do not store in a wet basement or expose to rain or water.

• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify the noise level of the unit or where noise or discharged air might disturb neighbors.

• To avoid personal injury, be careful when handling parts with sharp edges.

• Perform the specified installation work to guard against an earthquake.

If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

For Reference:

If a heating operation would be continuously performed for a long time under the condition that the outdoor temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom plate, resulting in a trouble of the cabinet or fan.

It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.

For details, contact the dealer.

– 4 –

FILE NO. SVM-10050

2. SPECIFICATIONS

2-1. Specifications

RAS-18SKV-E / RAS-18SAV-E2


Unit model

Indoor

Outdoor

Cooling capacity

Cooling capacity range

Heating capacity

Heating capacity range

Power supply

(kW)

(kW)

(kW)

(kW)

Electric characteristic

Indoor

Outdoor

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Starting current

(A)

(W)

(%)

(A)

(W)

(%)

(A)

COP

Sound pressure Indoor H / M+ / M / L+ / L (dB-A) level

Outdoor H (dB-A)

Sound power Indoor H / M+ / M / L+ / L (dB-A) level

Outdoor H (dB-A)

Unit model

Dimension

Height

Width

(mm)

(mm)

Indoor unit Depth

Net weight

Fan motor output

Air flow rate (Cooling/Heating)

Unit model

Dimension

Height

Width

(mm)

(kg)

(W)

(m³/min)

(mm)

(mm)

Outdoor unit

Depth

Net weight

Motor output

Compressor Type

Model

Fan motor output

(mm)

(kg)

(W)

(W)

(m³/min)

Piping connection


Type

Indoor unit

Liquid side

Gas side

Liquid side

Outdoor unit

Gas side

Maximum length

Maximum chargeless length

(mm)

(mm)

(mm)

(mm)

(m)

(m)

(m)

Refrigerant

Wiring connection

Maximum height difference

Name of refrigerant

Weight

Power supply

Interconnection

Indoor (Cooling/Heating)

Usable temperature range

Outdoor (Cooling/Heating)

Installation plate

Wireless remote controller

Batteries

(kg)

(°C)

(°C)

Indoor unit

Remote controller holder

Toshiba New IAQ filter

Mounting screw

Accessory


Pan head wood screw

Outdoor unit

Plasma air purifier

Installation manual

Owner’s manual

Drain nipple

Water-proof rubber cap

RAS-18SKV-E RAS22 SKV-E

RAS-18SAV-E 2 RAS22 SAV-E 2

5.0 6.0

1.1 – 6.0 1.2 – 6.7

5.8 7.0

0.8 – 6.3 1.0 – 7.5

1 Ph / 50Hz / 220 – 240V, 1 Ph / 60Hz / 220 – 230V

Cooling Heating Cooling Heating

0.30 – 0.28 0.30 – 0.28 0.38 – 0.35 0.38 – 0.35

40 40 50 50

60 60 60 60


6.40 – 5.87 6.98 – 6.40 8.93 – 8.19 9.18 – 8.42

1380 1520 1945 2000

98 99 99 99

7.28-6.68 9.56-8.77

3.52 3.72 3.01 3.41

44/41/38/35/32 44/41/39/35/32 47/44/41/38/35 47/44/42/38/35

49 50 53 52

59/56/53/50/47 59/56/54/50/47 62/59/56/53/50 62/59/57/53/50

64 65 68 67

RAS-18SKV-E RAS22 SKV-E

320 320

1050

228

1050

228

13 13

30 30

15.9 / 16.5 17.7 / 18.0


550 550

780

290

780

290

41 41

1100 1100

Twin rotary type with DC-inverter variable speed control

DA130A1F-27F DA150A1F-20F

43 43

36.3 / 31.9 38.6 / 37.2

Flare connection Flare connection

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

10

R410A

10

R410A

1.40

1.40

3 Wires: includes earth (Outdoor)

4 Wires: includes earth

21 ~ 32 / ~ 28 21 ~ 32 / ~ 28

–10 ~ 46 / –15 ~ 24

1

–10 ~ 46 /–15 ~ 24

1

1

2

1

2

1

4

6 (Ø4 × 25L)

1

4

6 (Ø4 × 25L)

2 (Ø3.1L × 16L)

—

1

1

1

2

2 (Ø3.1L × 16L)

—

1

1

1

2

• The specifications may be subject to change without notice for purpose of improvement.

– 5 –

FILE NO. SVM-10050

RAS-18SKVR-E / RAS-18SAV-E2


Unit model

Indoor

Outdoor

Cooling capacity


Heating capacity


Power supply

(kW)

(kW)

(kW)

(kW)


Indoor

Outdoor

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Starting current

(A)

(W)

(%)

(A)

(W)

(%)

(A)

COP


Outdoor H (dB-A)


Outdoor H (dB-A)

Unit model

Dimension

Height

Width

(mm)

(mm)

Indoor unit Depth

Net weight

Fan motor output


Unit model

Dimension

Height

Width

(mm)

(kg)

(W)

(m³/min)

(mm)

(mm)

Outdoor unit

Depth

Net weight

Motor output

Compressor Type

Model

Fan motor output

(mm)

(kg)

(W)

(W)

(m³/min)

Piping connection


Type

Indoor unit

Liquid side

Gas side

Liquid side

Outdoor unit

Gas side

Maximum length


(mm)

(mm)

(mm)

(mm)

(m)

(m)

(m)

Refrigerant

Wiring connection


Name of refrigerant

Weight

Power supply

Interconnection




Installation plate


Batteries

(kg)

(°C)

(°C)

Indoor unit



Mounting screw

Accessory


Pan head wood screw

Outdoor unit

Plasma air purifier

Installation manual

Owner’s manual

Drain nipple


RAS-18SKV R -E RAS22 SKV R -E


5.0 6.0

1.1 – 6.0 1.2 – 6.7

5.8 7.0

0.8 – 6.3 1.0 – 7.5

1 Ph / 50Hz / 220 – 240V, 1 Ph / 60Hz / 220 – 230V


0.30 – 0.28 0.30 – 0.28 0.38 – 0.35 0.38 – 0.35

40 40 50 50

60 60 60 60


6.40 – 5.87 6.98 – 6.40 8.93 – 8.19 9.18 – 8.42

1380 1520 1945 2000

98 99 99 99

7.28-6.68 9.56-8.77

3.52 3.72 3.01 3.41

44/41/38/35/32 44/41/39/35/32 47/44/41/38/35 47/44/42/38/35

49 50 53 52

59/56/53/50/47 59/56/54/50/47 62/59/56/53/50 62/59/57/53/50

64 65 68 67

RAS-18SKV R -E RAS22 SKV R -E

320 320

1050

228

1050

228

13 13

30 30

15.9 / 16.5 17.7 / 18.0


550 550

780

290

780

290

41 41

1100 1100



43 43

36.3 / 31.9 38.6 / 37.2


Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

10

R410A

10

R410A

1.40

1.40



21 ~ 32 / ~ 28 21 ~ 32 / ~ 28

–10 ~ 46 / –15 ~ 24

1

–10 ~ 46 /–15 ~ 24

1

1

2

1

2

1

2

6 (Ø4 × 25L)

1

2

6 (Ø4 × 25L)

2 (Ø3.1L × 16L)

1

1

1

1

2

2 (Ø3.1L × 16L)

1

1

1

1

2


– 6 –

FILE NO. SVM-10050

RAS-18SKV2-E / RAS-18SAV2-E


Unit model

Indoor

Outdoor

Cooling capacity


Heating capacity


Power supply

(kW)

(kW)

(kW)

(kW)


Indoor

Outdoor

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Starting current

(A)

(W)

(%)

(A)

(W)

(%)

(A)

COP


Outdoor H (dB-A)


Outdoor H (dB-A)

Unit model

Dimension

Height

Width

(mm)

(mm)

Indoor unit Depth

Net weight

Fan motor output


Unit model

Dimension

Height

Width

(mm)

(kg)

(W)

(m³/min)

(mm)

(mm)

Outdoor unit

Depth

Net weight

Motor output

Compressor Type

Model

Fan motor output

(mm)

(kg)

(W)

(W)

(m³/min)

Piping connection


Type

Indoor unit

Liquid side

Gas side

Liquid side

Outdoor unit

Gas side

Maximum length


(mm)

(mm)

(mm)

(mm)

(m)

(m)

(m)

Refrigerant

Wiring connection


Name of refrigerant

Weight

Power supply

Interconnection




Installation plate


Batteries

(kg)

(°C)

(°C)

Indoor unit



Mounting screw

Accessory


Pan head wood screw

Outdoor unit

Plasma air purifier

Installation manual

Owner’s manual

Drain nipple


RAS-18SKV 2 -E RAS22 SKV 2 -E

RAS-18SAV 2 -E RAS22SAV2-E

5.0 6.0

1.1 – 6.0 1.2 – 6.7

5.8 7.0

0.8 – 6.3 1.0 – 7.5

1 Ph / 50Hz / 220 – 240V, 1 Ph / 60Hz / 220 – 230V


0.30 – 0.28 0.30 – 0.28 0.38 – 0.35 0.38 – 0.35

40 40 50 50

60 60 60 60


6.40 – 5.87 6.98 – 6.40 8.93 – 8.19 9.18 – 8.42

1380 1520 1945 2000

98 99 99 99

7.28-6.68 9.56-8.77

3.52 3.72 3.01 3.41

44/41/38/35/32 44/41/39/35/32 47/44/41/38/35 47/44/42/38/35

49 50 53 52

59/56/53/50/47 59/56/54/50/47 62/59/56/53/50 62/59/57/53/50

64 65 68 67

RAS-18SKV 2 -E RAS22 SKV 2 -E

320 320

1050

228

1050

228

13 13

30 30

15.9 / 16.5 17.7 / 18.0

RAS-18SAV 2 -E RAS22 SAV 2 -E

550 550

780

290

780

290

41 41

1100 1100



43 43

36.3 / 31.9 38.6 / 37.2


Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

10

R410A

10

R410A

1.40

1.40



21 ~ 32 / ~ 28 21 ~ 32 / ~ 28

–10 ~ 46 / –15 ~ 24

1

–10 ~ 46 /–15 ~ 24

1

1

2

1

2

1

4

6 (Ø4 × 25L)

1

4

6 (Ø4 × 25L)

2 (Ø3.1L × 16L)

—

1

1

1

2

2 (Ø3.1L × 16L)

—

1

1

1

2


– 7 –


RAS-18SKV-A / RAS-18SAV2-A


Unit model

Indoor

Outdoor

Cooling capacity


Heating capacity


Power supply

(kW)

(kW)

(kW)

(kW)


Indoor

Outdoor

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Starting current

(A)

(W)

(%)

(A)

(W)

(%)

(A)

COP


Outdoor H (dB-A)


Outdoor H (dB-A)

Unit model

Dimension

Height

Width

(mm)

(mm)

Indoor unit Depth

Net weight

Fan motor output


Unit model

Dimension

Height

Width

(mm)

(kg)

(W)

(m³/min)

(mm)

(mm)

Outdoor unit

Depth

Net weight

Motor output

Compressor Type

Model

Fan motor output

(mm)

(kg)

(W)

(W)

(m³/min)

Piping connection


Type

Indoor unit

Liquid side

Gas side

Liquid side

Outdoor unit

Gas side

Maximum length


(mm)

(mm)

(mm)

(mm)

(m)

(m)

(m)

Refrigerant

Wiring connection


Name of refrigerant

Weight

Power supply

Interconnection




Installation plate


Batteries

(kg)

(°C)

(°C)

Indoor unit



Mounting screw

Accessory


Pan head wood screw

Outdoor unit

Plasma air purifier

Installation manual

Owner’s manual

Drain nipple


RAS-18SKVA RAS22 SKVA

RAS-18SAV 2 A RAS22SAV2-A

5.0 6.0

1.1 – 6.0 1.2 – 6.7

5.8 7.0

0.8 – 6.3 1.0 – 7.5

1 Ph / 50Hz / 220 – 240V


0.30 – 0.28 0.30 – 0.28 0.38 – 0.35 0.38 – 0.35

40 40 50 50

60 60 60 60


6.40 – 5.87 6.98 – 6.40 8.93 – 8.19 9.18 – 8.42

1380 1520 1945 2000

98 99 99 99

7.28-6.68 9.56-8.77

3.52 3.72 3.01 3.41

44/41/38/35/32 44/41/39/35/32 47/44/41/38/35 47/44/42/38/35

49 50 53 52

59/56/53/50/47 59/56/54/50/47 62/59/56/53/50 62/59/57/53/50

64 65 68 67

RAS-18SKVA RAS22 SKVA

320 320

1050

228

1050

228

13 13

30 30

15.9 / 16.5 17.7 / 18.0

RAS-18SAV 2 A RAS22 SAV 2 A

550 550

780

290

780

290

41 41

1100 1100



43 43

36.3 / 31.9 38.6 / 37.2


Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

10

R410A

10

R410A

1.40

1.40



21 ~ 32 / ~ 28 21 ~ 32 / ~ 28

–10 ~ 46 / –15 ~ 24

1

–10 ~ 46 /–15 ~ 24

1

1

2

1

2

1

4

6 (Ø4 × 25L)

1

4

6 (Ø4 × 25L)

2 (Ø3.1L × 16L)

—

1

1

1

2

2 (Ø3.1L × 16L)

—

1

1

1

2


– 8 –


RAS-18SKVR-A / RAS-18SAV2-A


Unit model

Indoor

Outdoor

Cooling capacity


Heating capacity


Power supply

(kW)

(kW)

(kW)

(kW)


Indoor

Outdoor

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Starting current

(A)

(W)

(%)

(A)

(W)

(%)

(A)

COP


Outdoor H (dB-A)


Outdoor H (dB-A)

Unit model

Dimension

Height

Width

(mm)

(mm)

Indoor unit Depth

Net weight

Fan motor output


Unit model

Dimension

Height

Width

(mm)

(kg)

(W)

(m³/min)

(mm)

(mm)

Outdoor unit

Depth

Net weight

Motor output

Compressor Type

Model

Fan motor output

(mm)

(kg)

(W)

(W)

(m³/min)

Piping connection


Type

Indoor unit

Liquid side

Gas side

Liquid side

Outdoor unit

Gas side

Maximum length


(mm)

(mm)

(mm)

(mm)

(m)

(m)

(m)

Refrigerant

Wiring connection


Name of refrigerant

Weight

Power supply

Interconnection




Installation plate


Batteries

(kg)

(°C)

(°C)

Indoor unit



Mounting screw

Accessory


Pan head wood screw

Outdoor unit

Plasma air purifier

Installation manual

Owner’s manual

Drain nipple


RAS-18SKV R A RAS22 SKV R A

RAS-18 SAV2 A RAS22SAV2-A

5.0 6.0

1.1 – 6.0 1.2 – 6.7

5.8 7.0

0.8 – 6.3 1.0 – 7.5

1 Ph / 50Hz / 220 – 240V


0.30 – 0.28 0.30 – 0.28 0.38 – 0.35 0.38 – 0.35

40 40 50 50

60 60 60 60


6.40 – 5.87 6.98 – 6.40 8.93 – 8.19 9.18 – 8.42

1380 1520 1945 2000

98 99 99 99

7.28-6.68 9.56-8.77

3.52 3.72 3.01 3.41

44/41/38/35/32 44/41/39/35/32 47/44/41/38/35 47/44/42/38/35

49 50 53 52

59/56/53/50/47 59/56/54/50/47 62/59/56/53/50 62/59/57/53/50

64 65 68 67

RAS-18SKV R A RAS22 SKV R A

320 320

1050

228

1050

228

13 13

30 30

15.9 / 16.5 17.7 / 18.0

RAS-18SAV 2 A RAS22 SAV 2 A

550 550

780

290

780

290

41 41

1100 1100



43 43

36.3 / 31.9 38.6 / 37.2


Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

10

R410A

10

R410A

1.40

1.40



21 ~ 32 / ~ 28 21 ~ 32 / ~ 28

–10 ~ 46 / –15 ~ 24

1

–10 ~ 46 /–15 ~ 24

1

1

2

1

2

1

2

6 (Ø4 × 25L)

1

2

6 (Ø4 × 25L)

2 (Ø3.1L × 16L)

1

1

1

1

2

2 (Ø3.1L × 16L)

1

1

1

1

2


– 9 –

FILE NO. SVM-10050

RAS-18SKV-ND / RAS-18SAV2-E


Unit model

Indoor

Outdoor

Cooling capacity


Heating capacity


Power supply

(kW)

(kW)

(kW)

(kW)


Indoor

Outdoor

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Starting current

(A)

(W)

(%)

(A)

(W)

(%)

(A)

COP


Outdoor H (dB-A)


Outdoor H (dB-A)

Unit model

Dimension

Height

Width

(mm)

(mm)

Indoor unit Depth

Net weight

Fan motor output


Unit model

Dimension

Height

Width

(mm)

(kg)

(W)

(m³/min)

(mm)

(mm)

Outdoor unit

Depth

Net weight

Motor output

Compressor Type

Model

Fan motor output

(mm)

(kg)

(W)

(W)

(m³/min)

Piping connection


Type

Indoor unit

Liquid side

Gas side

Liquid side

Outdoor unit

Gas side

Maximum length


(mm)

(mm)

(mm)

(mm)

(m)

(m)

(m)

Refrigerant

Wiring connection


Name of refrigerant

Weight

Power supply

Interconnection




Installation plate


Batteries

(kg)

(°C)

(°C)

Indoor unit



Mounting screw

Accessory


Pan head wood screw

Outdoor unit

Plasma air purifier

Installation manual

Owner’s manual

Drain nipple


RAS-18SKVND RAS22 SKVND

RAS-18SAV 2 E RAS22SAV2-E

5.0 6.0

1.1 – 6.0 1.2 – 6.7

5.8 7.0

0.8 – 6.3 1.0 – 7.5

1 Ph / 50Hz / 220 – 240V, 1 Ph / 60Hz / 220 – 230V


0.30 – 0.28 0.30 – 0.28 0.38 – 0.35 0.38 – 0.35

40 40 50 50

60 60 60 60


6.40 – 5.87 6.98 – 6.40 8.93 – 8.19 9.18 – 8.42

1380 1520 1945 2000

98 99 99 99

7.28-6.68 9.56-8.77

3.52 3.72 3.01 3.41

44/41/38/35/32 44/41/39/35/32 47/44/41/38/35 47/44/42/38/35

49 50 53 52

59/56/53/50/47 59/56/54/50/47 62/59/56/53/50 62/59/57/53/50

64 65 68 67

RAS-18SKVND RAS22 SKVND

320 320

1050

228

1050

228

13 13

30 30

15.9 / 16.5 17.7 / 18.0

RAS-18SAV 2 E RAS22 SAV 2 E

550 550

780

290

780

290

41 41

1100 1100



43 43

36.3 / 31.9 38.6 / 37.2


Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

Ø6.35

Ø12.70

Ø6.35

Ø12.70

20

15

10

R410A

10

R410A

1.40

1.40



21 ~ 32 / ~ 28 21 ~ 32 / ~ 28

–10 ~ 46 / –15 ~ 24

1

–10 ~ 46 /–15 ~ 24

1

1

2

1

2

1

4

6 (Ø4 × 25L)

1

4

6 (Ø4 × 25L)

2 (Ø3.1L × 16L)

—

1

1

1

2

2 (Ø3.1L × 16L)

—

1

1

1

2


– 10 –

2-2. Operation Characteristic Curve

<Cooling>

6.00

5.00

4.00

3.00

10.00

9.00

8.00

7.00

2.00

1.00

RAS-22SKV-E

RAS-22SKVR-E

RAS-22SKV2-E

RAS-22SKV-A

RAS-22SKVR-A

RAS-22SKV-ND

RAS-18SKV-E

RAS-18SKVR-E

RAS-18SKV2-E

RAS-18SKV-A

RAS-18SKVR-A

RAS-18SKV-ND

0.00

0 10 20 30 40 50 60 70 80 90 100 110 120

Compressor Speed (RPS)

FILE NO. SVM-10050

<Heating>

6.00

5.00

4.00

3.00

10.00

9.00

8.00

7.00

2.00

1.00

RAS-22SKV-E

RAS-22SKVR-E

RAS-22SKV2-E

RAS-22SKV-A

RAS-22SKVR-A

RAS-22SKV-ND

RAS-18SKV-E

RAS-18SKVR-E

RAS-18SKV2-E

RAS-18SKV-A

RAS-18SKVR-A

RAS-18SKV-ND

0.00

0 10 20 30 40 50 60 70 80 90 100 110 120

Compressor Speed (RPS)

2-3. Capacity Variation Ratio According to Temperature

<Cooling> <Heating>

120 105

100

95

90

85

80

75

70

RAS-18SKV-E

RAS-18SKVR-E

RAS-18SKV2-E

RAS-18SKV-A

RAS-18SKVR-A

RAS-18SKV-ND

RAS-22SKV-E

RAS-22SKVR-E

RAS-22SKV2-E

RAS-22SKV-A

RAS-22SKVR-A

RAS-22SKV-ND

65 Condition

Indoor: DB27°C/WB19°C

Indoor Air-Flow Volume: High

Pipe Length: 7.5m

60

55

Capacity Ratio: 100% =

5.0kW (RAS-18SKV-E, RAS-18SKVR-E, RAS-18SKV2-E,

RAS-18SKV-A, RAS-18SKVR-A, RAS-18SKV-ND)



50

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Outdoor Temperature (°C)

100

80

60

RAS-18SKV-E

RAS-18SKVR-E

RAS-18SKV2-E

RAS-18SKV-A

RAS-18SKVR-A

RAS-18SKV-ND

RAS-22SKV-E

RAS-22SKVR-E

RAS-22SKV2-E

RAS-22SKV-A

RAS-22SKVR-A

RAS-22SKV-ND

40

Condition

Indoor: DB20°C

Indoor Air-Flow Volume: High

Pipe Length: 7.5m

20

0

–15

Capacity Ratio: 100% =





–10 –5 0 5 10

Outdoor Temperature (°C)

– 11 –

FILE NO. SVM-10050

3. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC

(R410A) which does not damage the ozone layer.

The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant

(R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time.

The next section describes the precautions for air conditioner using the new refrigerant. Conforming to contents of the next section together with the general cautions included in this manual, perform the correct and safe work.

6. When an air conditioning system charged with a large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, even when refrigerant leaks, its concentration does not exceed the marginal level.

If the refrigerant gas leakage occurs and its concentration exceeds the marginal level, an oxygen starvation accident may result.

7. Be sure to carry out installation or removal according to the installation manual.

Improper installation may cause refrigeration trouble, water leakage, electric shock, fire, etc.

8. Unauthorized modifications to the air conditioner may be dangerous.

If a breakdown occurs please call a qualified air conditioner technician or electrician.

Improper repair may result in water leakage, electric shock and fire, etc.

3-1. Safety During Installation/Servicing

As R410A’s pressure is about 1.6 times higher than that of R22, improper installation/servicing may cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out installation/servicing safely while taking the following precautions into consideration.

1. Never use refrigerant other than R410A in an air conditioner which is designed to operate with

R410A.

If other refrigerant than R410A is mixed, pressure in the refrigeration cycle becomes abnormally high, and it may cause personal injury, etc. by a rupture.

2. Confirm the used refrigerant name, and use tools and materials exclusive for the refrigerant

R410A.

The refrigerant name R410A is indicated on the visible place of the outdoor unit of the air conditioner using R410A as refrigerant. To prevent mischarging, the diameter of the service port differs from that of R22.

3. If a refrigeration gas leakage occurs during installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

4. When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture or personal injury may be caused.

5. After completion of installation work, check to make sure that there is no refrigeration gas leakage.

If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.

3-2. Refrigerant Piping Installation

3-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes and joints are mainly used.

Copper pipes and joints suitable for the refrigerant must be chosen and installed.

Furthermore, it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants.

1. Copper Pipes

It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 40 mg/10 m.

Do not use copper pipes having a collapsed, deformed or discolored portion

(especially on the interior surface).

Otherwise, the expansion valve or capillary tube may become blocked with contaminants.

As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A are as shown in Table 3-2-1.

Never use copper pipes thinner than 0.8 mm even when it is available on the market.

– 12 –

Nominal diameter

1/4

3/8

1/2

5/8

Table 3-2-1 Thicknesses of annealed copper pipes

FILE NO. SVM-10050

Outer diameter (mm)

6.35

9.52

12.70

15.88

R410A

0.80

0.80

0.80

1.00

Thickness (mm)

R22

0.80

0.80

0.80

1.00

2. Joints

For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.

a) Flare Joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds

20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.

b) Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose diameter is larger than 20 mm.

Thicknesses of socket joints are as shown in Table 3-2-2.


1/4

3/8

1/2

5/8

Table 3-2-2 Minimum thicknesses of socket joints

Reference outer diameter of copper pipe jointed (mm)

6.35

9.52

12.70

15.88

Minimum joint thickness

(mm)

0.50

0.60

0.70

0.80

3-2-2. Processing of Piping Materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used, and that refrigerant does not leak.

When using lubricating oils in the piping processing, use such lubricating oils whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any other cover.

1. Flare processing procedures and precautions

a) Cutting the Pipe

By means of a pipe cutter, slowly cut the pipe so that it is not deformed.

b) Removing Burrs and Chips

If the flared section has chips or burrs, refrigerant leakage may occur.

Carefully remove all burrs and clean the cut surface before installation.

c) Insertion of Flare Nut

– 13 –

FILE NO. SVM-10050 d) Flare Processing

Make certain that a clamp bar and copper pipe have been cleaned.

By means of the clamp bar, perform the flare processing correctly.

Use either a flare tool for R410A or conventional flare tool.

Flare processing dimensions differ according to the type of flare tool.

When using a conventional flare tool, be sure to secure “dimension A” by using a gauge for size adjustment.


1/4

3/8

1/2

5/8

ØD

A

Fig. 3-2-1 Flare processing dimensions

Table 3-2-3 Dimensions related to flare processing for R410A

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

0.8

0.8

1.0

Flare tool for R410A clutch type

0 to 0.5

0 to 0.5

0 to 0.5

0 to 0.5

A (mm)

Conventional flare tool

Clutch type Wing nut type

1.0 to 1.5

1.0 to 1.5

1.0 to 1.5

1.0 to 1.5

1.5 to 2.0

1.5 to 2.0

2.0 to 2.5

2.0 to 2.5


1/4

3/8

1/2

5/8

Table 3-2-4 Dimensions related to flare processing for R22

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

0.8

0.8

1.0

Flare tool for R22 clutch type

0 to 0.5

0 to 0.5

0 to 0.5

0 to 0.5

A (mm)

Conventional flare tool

Clutch type

0.5 to 1.0

Wing nut type

1.0 to 1.5

0.5 to 1.0

0.5 to 1.0

0.5 to 1.0

1.0 to 1.5

1.5 to 2.0

1.5 to 2.0


1/4

3/8

1/2

5/8

Table 3-2-5 Flare and flare nut dimensions for R410A

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

0.8

0.8

1.0

A

Dimension (mm)

B C D

9.1

9.2

6.5

13

13.2

13.5

9.7

20

16.0

16.6

12.9

23

19.0

19.7

16.0

25

Flare nut width

(mm)

17

22

26

29

– 14 –


1/4

3/8

1/2

5/8

3/4

Table 3-2-6 Flare and flare nut dimensions for R22

FILE NO. SVM-10050

Outer diameter

(mm)

6.35

9.52

12.70

15.88

19.05

Thickness

(mm)

0.8

0.8

0.8

1.0

1.0

Dimension (mm)

A B C D

9.0

9.2

6.5

13

13.0

13.5

9.7

20

16.0

16.2

12.9

20

19.0

19.7

16.0

23

23.3

24.0

19.2

34

Flare nut width

(mm)

17

22

24

27

36

45˚ to 46˚

B A C D

43˚ to 45˚

Fig. 3-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions

a) Make sure that the flare and union portions do not have any scar or dust, etc.

b) Correctly align the processed flare surface with the union axis.

c) Tighten the flare with designated torque by means of a torque wrench.

The tightening torque for R410A is the same as that for conventional R22.

Incidentally, when the torque is weak, the gas leakage may occur.

When it is strong, the flare nut may crack and may be made non-removable.

When choosing the tightening torque, comply with values designated by manufacturers.

Table 3-2-7 shows reference values.

NOTE :

When applying oil to the flare surface, be sure to use oil designated by the manufacturer.

If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.


1/4

3/8

1/2

5/8

Table 3-2-7 Tightening torque of flare for R410A [Reference values]

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Tightening torque

N•m (kgf•cm)

14 to 18 (140 to 180)

33 to 42 (330 to 420)

50 to 62 (500 to 620)

63 to 77 (630 to 770)

Tightening torque of torque wrenches available on the market

N•m (kgf•cm)

16 (160), 18 (180)

42 (420)

55 (550)

65 (650)

– 15 –

FILE NO. SVM-10050

3-3. Tools

3-3-1. Required Tools

The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is changed to prevent mixing of other refrigerant.

To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

3. Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

8

9

10

No

.

1

2

3

4

5

6

7

Used tool Usage

Flare tool

Copper pipe gauge for adjusting projection margin

Torque wrench

(For Ø12.7)

Gauge manifold

Charge hose

Vacuum pump adapter

Electronic balance for refrigerant charging

Refrigerant cylinder

Leakage detector

Charging cylinder

Pipe flaring

Flaring by conventional flare tool

Connection of flare nut

Evacuating, refrigerant charge, run check, etc.

Vacuum evacuating

Refrigerant charge

Refrigerant charge

Gas leakage check

Refrigerant charge

R410A air-water heat pump installation

Existence of Whether conventional new equipment equipment can be for R410A used

Yes

∗ (Note 1)

Conventional air-water heat pump installation

Whether new equipment can be used with conventional refrigerant

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

∗ (Note 2)

∗ (Note 1)

No

No

No

No

No

No

No

∗ (Note 1)

No

No

Yes

Yes

No

Yes

No

(Note 1)

When flaring is carried out for R410A using the conventional flare tools, adjustment of projection margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2)

Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as the general tools.

1. Vacuum pump

Use vacuum pump by attaching vacuum pump adapter.

2. Torque wrench (For Ø6.35, Ø9.52)

3. Pipe cutter

4. Reamer

5. Pipe bender

6. Level vial

7. Screwdriver (+, –)

8. Spanner or Monkey wrench

9. Hole core drill (Ø65)

10. Hexagon wrench

(Opposite side 4mm)

11. Tape measure

12. Metal saw

Also prepare the following equipments for other installation method and run check.

1. Clamp meter 3. Insulation resistance tester

2. Thermometer 4. Electroscope

– 16 –

FILE NO. SVM-10050

3-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps.

Recover the refrigerant, and check no refrigerant remains in the equipment.

When the compound gauge’s pointer has indicated

–0.1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s power switch.

Connect the charge hose to packed valve service port at the outdoor unit’s gas side.

Connect the charge hose to the vacuum pump adapter.

Keep the status as it is for 1 to 2 minutes, and ensure that the compound gauge’s pointer does not return.

Open fully both packed valves at liquid and gas sides.

Set the refrigerant cylinder to the electronic balance, connect the connecting hose to the cylinder and the connecting port of the electronic balance, and charge

liquid refrigerant

.

(For refrigerant charging, see the figure below.)

Place the handle of the gauge manifold Low in the fully opened position, and turn on the vacuum pump’s power switch. Then, evacuating the refrigerant in the cycle.

1. Never charge refrigerant exceeding the specified amount.

2. If the specified amount of refrigerant cannot be charged, charge refrigerant

bit by bit

in COOL mode.

3. Do not carry out additional charging.

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and may cause a rupture or personal injury.

(Indoor unit)

Opened


(with siphon)

Check valve

Opened

Open/close valve for charging

Closed

Opened

Service port


Fig. 3-4-1 Configuration of refrigerant charging

– 17 –

(Outdoor unit)

FILE NO. SVM-10050

1. Be sure to make setting so that

liquid

can be charged.

2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.

It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.

Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.

[ Cylinder with siphon ]

Gauge manifold

OUTDOOR unit

[ Cylinder without siphon ]

Gauge manifold

OUTDOOR unit


Electronic balance cylinder ant Refriger

Electronic balance

Siphon

R410A refrigerant is HFC mixed refrigerant.

Therefore, if it is charged with gas, the composition of the charged refrigerant changes and the characteristics of the equipment varies.

Fig. 3-4-2

3-5. Brazing of Pipes

3-5-1. Materials for Brazing

1. Silver brazing filler

Silver brazing filler is an alloy mainly composed of silver and copper. It is used to join iron, copper or copper alloy, and is relatively expensive though it excels in solderability.

2. Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used to join copper or copper alloy.

3. Low temperature brazing filler

Low temperature brazing filler is generally called solder, and is an alloy of tin and lead.

Since it is weak in adhesive strength, do not use it for refrigerant pipes.

1. Phosphor bronze brazing filler tends to react with sulfur and produce a fragile compound water solution, which may cause a gas leakage. Therefore, use any other type of brazing filler at a hot spring resort, etc., and coat the surface with a paint.

2. When performing brazing again at time of servicing, use the same type of brazing filler.

– 18 –

3-5-2. Flux

1. Reason why flux is necessary

• By removing the oxide film and any foreign matter on the metal surface, it assists the flow of brazing filler.

• In the brazing process, it prevents the metal surface from being oxidized.

• By reducing the brazing filler’s surface tension, the brazing filler adheres better to the treated metal.

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature.

• Due to a wide effective temperature range, flux is hard to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and brazing filler is minimum.

• It excels in coating performance and is harmless to the human body.

As the flux works in a complicated manner as described above, it is necessary to select an adequate type of flux according to the type and shape of treated metal, type of brazing filler and brazing method, etc.

3. Types of flux

• Noncorrosive flux

Generally, it is a compound of borax and boric acid.

It is effective in case where the brazing temperature is higher than 800°C.

• Activated flux

Most of fluxes generally used for silver brazing are this type.

It features an increased oxide film removing capability due to the addition of compounds such as potassium fluoride, potassium chloride and sodium fluoride to the borax-boric acid compound.

4. Piping materials for brazing and used brazing filler/flux

Piping material

Copper - Copper

Used brazing filler

Phosphor copper

Copper - Iron

Iron - Iron

Silver

Silver

Used flux

Do not use

Paste flux

Vapor flux

FILE NO. SVM-10050

3-5-3. Brazing

As brazing work requires sophisticated techniques, experiences based upon a theoretical knowledge, it must be performed by a person qualified.

In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry Nitrogen gas

(N2) flow.

Never use gas other than Nitrogen gas.

1. Brazing method to prevent oxidation

1) Attach a reducing valve and a flow-meter to the Nitrogen gas cylinder.

2) Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.

3) Apply a seal onto the clearance between the piping material and inserted copper pipe for

Nitrogen in order to prevent backflow of the

Nitrogen gas.

4) When the Nitrogen gas is flowing, be sure to keep the piping end open.

5) Adjust the flow rate of Nitrogen gas so that it is lower than 0.05 m 3 /Hr or 0.02 MPa

(0.2kgf/cm 2 ) by means of the reducing valve.

6) After performing the steps above, keep the

Nitrogen gas flowing until the pipe cools down to a certain extent (temperature at which pipes are touchable with hands).

7) Remove the flux completely after brazing.

M

Flow meter

Stop valve

Nitrogen gas cylinder

1. Do not enter flux into the refrigeration cycle.

2. When chlorine contained in the flux remains within the pipe, the lubricating oil deteriorates. Therefore, use a flux which does not contain chlorine.

3. When adding water to the flux, use water which does not contain chlorine

(e.g. distilled water or ion-exchange water).

4. Remove the flux after brazing.

Pipe

From Nitrogen cylinder

Nitrogen gas

Rubber plug

Fig. 3-5-1

Prevention of oxidation during brazing

– 19 –

4-1. Indoor Unit

RAS-18SKVR-E, RAS-22SKVR-E

RAS-18SKVR-A, RAS-22SKVR-A

4. CONSTRUCTION VIEWS

1050

FILE NO. SVM-10050

Front panel

Air filter Air inlet Plasma air purifier

228

50

Knock out system

Heat exchanger

Air ionizer

50

Knock out system

132

Installation plate hanger

568 200

72 78

150

56 19



Connecting plate (0.39m)

(For 18, 22 series; Flare Ø12.70mm)

132

Drain hose

(0.5mm)

235

215

Hanger

786

235

215

85

Connecting pipe (0.49m)

(Flare Ø6.35mm)

132

63

26


23

47 215.5

Center line

Hanger

262.5

– 20 –

Hanger

262.5

153.5

109

Instrallation plate outline

FILE NO. SVM-10050

RAS-18SKV-E, RAS-22SKV-E

RAS-18SKV-A, RAS-22SKV-A

RAS-18SKV-ND, RAS-22SKV-ND

RAS-18SKV2-E, RAS-22SKV2-E

1050

Air filter Air inlet

Front panel

228

50

Knock out system

Heat exchanger

50

Knock out system

132


568 200

72 78

150

56 19



Connecting plate (0.39m)

(For 18, 22 series; Flare Ø12.70mm)

Drain hose

(0.5mm)

Connecting pipe (0.49m)

(Flare Ø6.35mm)

63

26


132

235

215

Hanger

786

235

215

132

85 23

47 215.5

Center line

Hanger

262.5

– 21 –

Hanger

262.5

153.5 109

Instrallation plate outline

FILE NO. SVM-10050

4-2. Outdoor Unit

28

A

108 125

50

36

600

R15

R5.5

Ø6 hole

A detail Drawing (Back leg)

Ø 25 Drain outlet

FAN-GUARD

Ø 436

2 Ø 11 x 14 Hole

(For Ø 8 - 10 anchor bolt)

Ø6 hole

Ø11x14 hole

36

50

R15

B Detail Drawing (Front leg)

COVER-PV

Z

290

90 600 90 69

320

342

100 or more

Electrical part cover

Liquid side

Gas side

(Flare

∅

12.7)

54

Z View

600

Air intlel

2 - R5-5 x 17L Ushape

(For

∅

8 -

∅

10 anchor bolt)

600 or more

Service port

100 or more

Air outlel

600 or more

Installation dimension

2 -

∅

11 x 14 Long holes (For

∅

8 -

∅

10 anchor bolt)

– 22 –


5-1. Indoor Unit / Outdoor Unit

5. WIRING DIAGRAM

Compressor

CM

Reactor

Ion

Electrode

1

2

3

1

2

3

YEL

YEL

BRW

YEL

ORN

1

2

1

2

RED

WHI

BLK

P25

P23

P21

P35

P19

P18

P11

P08

P04

P05

P06

P24

P22

P20

P34

P33

Q404

PUR

SKVR-E only

Air Purifier

Electrode

DB01

P32

Micro

SW

Q200 ~ 205

IGBT

R221

R220

R219

L03

Power Relay

DB02

Reactor

+

C12

CT

Relay

C13

+ +

C14

P31

1

1

2

2

CN701

P30

1

1

2

2

3

3

Q300 ~ 305

MOS-FET

R321

R320

R319

P. C. Board

MCC-5009

L01

F03 Fuse

250V ~, T3.15A

Varistor

Surge

Absorber

P07

BLK

Varistor

F01 Fuse

250V ~, T25A

P03 P10

ORN BLK

CN300

CN700

CN603

CN602

CN601

CN600

P02

WHI

3

2

1

3

2

1

BLK

WHI

RED

6

5

4 4

3 3

2 2

1 1

6

5

FM

Fan Motor

PMV

Pulse Motor Valve

3

2

1

3

2

1

(TS)

Suction pipe

Temp. Sensor

2

1

2

1

(TO)

Outdoor

Temp. Sensor

3

2

1

3

2

1

(TD)

Discharge pipe

Temp. Sensor

2

1

2

1

(TE)

Condenser pipe

Temp. Sensor

Coil for

4-way Valve

Fuse, T6.3A

AC 250V

1 2 3 L

Power Supply

220-240V~, 50Hz / 220-230V~, 60Hz

220-240V~, 50Hz (RAS-18,22SKV-A, 18,22SKVR-A)

Sheet

Metal

Indoor Terminal Block

BLK

1 2 3

Heat Exchanger High-voltage

Power Supply

4

4

3

3

2

2

1

1

1

2

3

4

1

2

3

4

RED

BRW

BRW

BRW

1

2

3

4

1

2

3

4

2

2

1

1

CN42

(WHI)

CN02

F01 Fuse

T3.15A

AC 250V

3 1 1

CN01

WHI

CN51

GRN & YEL

Heat Exchanger Sensor (TC)

1

2

Thermo Sensor (TA)

1

2

1

2

1

2

1

2

3

1

2

3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

CN10

(WHI)

BLU

BLU

BLU

BLU

BLU

BLU

BLU

BLU

BLU

BLU

WHI

1

2

3

1

2

3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

CN21

(WHI)

CN62

(BLU)

CN61

(WHI)

Varistor

Line Filter

Main P. C. Board

MCC-5045

~

~

+

+

DC5V

DC12V

CN31

(WHI)

1

2

3 3

4 4

5 5

6 6

1

2

CN32

(WHI)

1

2

3

4 4

5 5

1

2

3

WHI

YEL

YEL

YEL

YEL

1

2

3

4 4

5 5

1

2

3

3

4

1

2

CN22

(WHI)

Fan Motor

DC Motor

Louver Motor

– 23 –

FILE NO. SVM-10050

6. SPECIFICATIONS OF ELECTRICAL PARTS


No.

1

Parts name

Fan motor (for indoor)

2

3

4

Room temp. sensor (TA-sensor)

Heat exchanger temp. sensor (TC-sensor)

Louver motor

Type

ICF-340-30-2

Β

( — )

( — )

MP24Z3T

Specifications

DC340V, 30W

10k

Ω

at 25°C

10k

Ω

at 25°C

Output (Rated) 1W, 16 poles, DC12V


6

7

4

5

No.

1 Reactor

2

3

Parts name

Outdoor fan motor

Suction temp. sensor (TS sensor)

8

9

Discharge temp. sensor (TD sensor)

Outside air temp. sensor (TO sensor)

Heat exchanger temp. sensor (TE sensor)

Terminal block (5P)

Compressor

18SAV-E2, 18SAV2-E,

18SAV2-A

22SAV-E2, 22SAV2-E,

22SAV2-A

Coil for PMV

10 Coil for 4-way valve

Model name

CH-57

ICF-140-43-4R

(Inverter attached)

(Inverter attached)

(Inverter attached)

(Inverter attached)

——

DA130A1F-27F

L = 10mH, 16A

DC140V, 43W

10k

Ω

(25°C)

62k

Ω

(20°C)

10k

Ω

(25°C)

10k

Ω

(25°C)

20A, AC250V

Rating

3-phases 4-poles 1100W

DA150A1F-20F

CAM-MD12TCTH-2

STF

DC12V

AC220–240V

– 24 –

FILE NO. SVM-10050

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram







T1 Temp. measurement

INDOOR UNIT

Indoor heat exchanger

Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe

Outer dia. : 12.7mm

Thickness 0.8mm

Cross flow fan


Outer dia. : 6.35mm

Thickness 0.8mm

Sectional shape of heat insulator

TC

TA

Chargeless : 15m

(16 to 20m)

Strainer

4-way valve

(STF-0108Z)

Accumulater tank

Muffler

Muffler

TD

Compressor

DA130A1F-27F

TS

Outdoor heat exchanger

TO

Split capillary

2-dia. 1.2 × 80

Pulse Modulating valve at liquid side

(CAM-B22YGTF-3)

Distributor

TE

Propeller fan

OUTDOOR UNIT

NOTE:

Refrigerant amount: 1.40kg

Gas leak check position

NOTE :

• The maximum pipe length of this air conditioner is 20m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

– 25 –

FILE NO. SVM-10050







Gauge attaching port

Vacuum pump connecting port


Outer dia. : 12.7mm

Thickness 0.8mm

4-way valve

(STF-0213Z)

Accumulater tank

T1 Temp. measurement

INDOOR UNIT

Indoor heat exchanger

Cross flow fan


Outer dia. : 6.35mm

Thickness 0.8mm

Sectional shape of heat insulator

TC

TA

Chargeless : 15m

(16 to 20m)

Strainer

Muffler

Muffler

TD

Compressor

DA150A1F-20F

TS

Outdoor heat exchanger

TO

3

4

1

2

Split capillary

1 -dia. 2 × 100

2 - 4 -dia. 2 × 66

Distributor

Propeller fan

TE

OUTDOOR UNIT

NOTE:

Pulse Modulating valve at liquid side

(CAM-B22YGTF-3)

Gas leak check position

Refrigerant flow (Cooling)

Refrigerant flow (Heating)

NOTE :

• The maximum pipe length of this air conditioner is 15m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

– 26 –

FILE NO. SVM-10050

7-2. Operation Data

<Cooling>

Temperature condition (°C)

Indoor Outdoor

27/19 35/24

Model name

RAS-

Standard pressure

P (MPa)

Heat exchanger pipe temp.

Indoor fan mode

T1 (°C) T2 (°C)

18SKV-E

18SKV 2 -E

18SKVA

18SKVND

18SKVR-E

18SKVRA

0.9 to 1.1

0.9 to 1.1

11 to 13

11 to 13

40 to 42

40 to 42

High

High

22 SKV-E

22 SKV 2 -E

22 SKVA

22 SKVND

0.9 to 1.1

11 to 13 41 to 43 High

22

22

SKVR-E

SKVRA

0.9 to 1.1

High

Outdoor fan mode

Compressor revolution

(rps)

High

High

High 77

77

67

67

<Heating>

Temperature condition (°C)

Indoor Outdoor

20/15 7/6

Model name

RAS-

Standard pressure

P (MPa)

Heat exchanger pipe temp.

T1 (°C)

18SKV-E

18SKV 2 -E

18SKVA

18SKVND

18SKVR-E

18SKVRA

2.5 to 2.6

2.5 to 2.6

40 to 42

40 to 42

22 SKV-E

22 SKV 2 -E

22 SKVA

22 SKVND

2.6 to 2.8

42 to 44

22

22

SKVR-E

SKVRA

2.6 to 2.8

42 to 44

T2 (°C)

1 to 3

1 to 3

0 to 2

0 to 2

Indoor fan mode

High

High

High

High

Outdoor fan mode

High

High

High

High

Compressor revolution

(rps)

NOTES :

1. Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.

(Thermistor themometer)

2. Connecting piping condition : 7.5 m

79

79

84

84

– 27 –


8. CONTROL BLOCK DIAGRAM


RAS-18SKV-E, RAS-

18SKV2-E, RAS-18SKV-A, RAS-18SKV-ND

RAS-

22

SKV-E, RAS-22

SKV2-E, RAS-22SKV-A, RAS-22SKV-ND

Indoor Unit Control Unit

Heat Exchanger Sensor (Tc)

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver and Indication

Initializing Circuit

Clock Frequency

Oscillator Circuit

M.C.U.

Functions

• Cold draft preventing Function

• 3-minute Delay at Restart for Compressor

• Fan Motor Starting Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

• Clean Function

Louver Motor

Drive Control

Indoor Fan

Motor Control

Louver

Motor

Indoor

Fan Motor

Power Supply Circuit

Converter (D.C circuit)

Noise Filter

Serial Signal Transmitter/Receiver

From Outdoor Unit

220-240V ~50Hz

220-230V ~60Hz

220-240V~, 50Hz (RAS-18,22S K V-A)

REMOTE CONTROLLER

Serial Signal Communication

(Operation Command and Information)

Remote Controller

Infrared Rays, 36.7kHz

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, HEAT, FAN

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECO

Hi-POWER

QUIET

SLEEP (1, 3, 5, 9 OFF TIMER)

– 28 –


RAS-18SKVR-E, RAS-

18

SKVR-

A, RAS-22SKVR-E, RAS-22SKVR-A

Heat Exchanger Sensor (Tc)

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver and Indication

Initializing Circuit

Clock Frequency

Oscillator Circuit

M.C.U.

Functions

• Cold draft preventing Function

• 3-minute Delay at Restart for Compressor

• Fan Motor Starting Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

• Clean Function

Indoor Unit Control Unit

Louver Motor

Drive Control

Indoor Fan

Motor Control

Louver

Motor

Indoor

Fan Motor

Air purifier unit

Power Supply Circuit Micro Switch

Converter (D.C circuit)

Noise Filter

Serial Signal Transmitter/Receiver

From Outdoor Unit

220-240V~, 50Hz

220-230V~, 60Hz

220-240V~, 50Hz (RAS-18,22S K V R -A)

REMOTE CONTROLLER

Serial Signal Communication

(Operation Command and Information)

Remote Controller

Infrared Rays, 36.7kHz

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, HEAT, FAN

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECO

Hi-POWER

QUIET

SLEEP (1, 3, 5, 9 OFF TIMER)

PURE (Air purifier)

– 29 –

8-2. Outdoor Unit (Inverter Assembly)


– 30 –

FILE NO. SVM-10050

9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air conditioner, which uses DC motor for the indoor fan motor and the outdoor fan motor. And the capacityproportional control compressor which can change the motor speed in the range from 11 to 120 rps is mounted. The DC motor drive circuit is mounted to the indoor unit. The compressor and the inverter to control fan motor are mounted to the outdoor unit.

The entire air conditioner is mainly controlled by the indoor unit controller.

The indoor unit controller drives the indoor fan motor based upon command sent from the remote controller, and transfers the operation command to the outdoor unit controller.

The outdoor unit controller receives operation command from the indoor unit side, and controls the outdoor fan and the pulse motor valve. (PMV)

Besides, detecting revolution position of the compressor motor, the outdoor unit controller controls speed of the compressor motor by controlling output voltage of the inverter and switching timing of the supply power

(current transfer timing) so that motors drive according to the operation command.

And then, the outdoor unit controller transfers reversely the operating status information of the outdoor unit to control the indoor unit controller.

• Detection of inverter input current and current release operation

• Over-current detection and prevention operation to IGBT module (Compressor stop function)

• Compressor and outdoor fan stop function when serial signal is off (when the serial signal does not reach the board assembly of outdoor control by trouble of the signal system)

• Transferring of operation information (Serial signal) from outdoor unit controller to indoor unit controller

• Detection of outdoor temperature and operation revolution control

• Defrost control in heating operation (Temp.

measurement by outdoor heat exchanger and control for 4-way valve and outdoor fan)

3. Contents of operation command signal

(Serial signal) from indoor unit controller to outdoor unit controller

The following three types of signals are sent from the indoor unit controller.

• Operation mode set on the remote controller

• Compressor revolution command signal defined by indoor temperature and set temperature

(Correction along with variation of room temperature and correction of indoor heat exchanger temperature are added.)

• Temperature of indoor heat exchanger

As the compressor adopts four-pole brushless

DC motor, the frequency of the supply power from inverter to compressor is two-times cycles of the actual number of revolution.

1. Role of indoor unit controller

The indoor unit controller judges the operation commands from the remote controller and assumes the following functions.

• Judgment of suction air temperature of the indoor heat exchanger by using the indoor temp. sensor.

(TA sensor)

• Judgment of the indoor heat exchanger temperature by using heat exchanger sensor (TC sensor)

(Prevent-freezing control, etc.)

• Louver motor control

• Indoor fan motor operation control

• LED (Light Emitting Diode) display control

• Transferring of operation command signal

(Serial signal) to the outdoor unit

• Reception of information of operation status

(Serial signal including outside temp. data) to the outdoor unit and judgment/display of error

• Air purifier operation control

• For these signals ([Operation mode] and [Compressor revolution] indoor heat exchanger temperature), the outdoor unit controller monitors the input current to the inverter, and performs the followed operation within the range that current does not exceed the allowable value.

4. Contents of operation command signal

(Serial signal) from outdoor unit controller to indoor unit controller

The following signals are sent from the outdoor unit controller.

• The current operation mode

• The current compressor revolution

• Outdoor temperature

• Existence of protective circuit operation

For transferring of these signals, the indoor unit controller monitors the contents of signals, and judges existence of trouble occurrence.

Contents of judgment are described below.

• Whether distinction of the current operation status meets to the operation command signal

• Whether protective circuit operates

2. Role of outdoor unit controller

Receiving the operation command signal

(Serial signal) from the indoor unit controller, the outdoor unit performs its role.

• Compressor operation control

• Operation control of outdoor fan motor

• PMV control

• 4-way valve control







When no signal is received from the outdoor unit controller, it is assumed as a trouble.

Operations followed to judgment of serial signal from indoor side.

– 31 –

FILE NO. SVM-10050

9-2. Operation Description

9-2.

1. Basic operation ........................................................................................................... 33

1. Operation control ................................................................................................... 33

2. Cooling/Heating operation ..................................................................................... 34

3. AUTO operation...................................................................................................... 34

4. DRY operation ........................................................................................................ 34

2. Indoor fan motor control .............................................................................................. 35

3. Outdoor fan motor control ........................................................................................... 37

4. Capacity control .......................................................................................................... 38

5. Current release control ............................................................................................... 38

6. Release protective control by temperature of indoor heat exchanger ........................ 39

7. Defrost control (Only in heating operation) ................................................................. 40

8. Louver control ............................................................................................................. 41

1) Louver position ....................................................................................................... 41

2) Air direction adjustment ......................................................................................... 41

3) Swing ..................................................................................................................... 41

9. ECO operation ............................................................................................................ 42

10. Temporary operation ................................................................................................... 43

11. Air purifying control ..................................................................................................... 43

Air purifying control [Detection of abnormality] ........................................................... 44

12. Pulse motor valve (PMV) control ................................................................................ 45

13. Self-Cleaning function ................................................................................................ 46

14. Remote Controller-A or B selection ............................................................................ 47

15. QUIET mode ............................................................................................................... 48

16. COMFORT SLEEP ..................................................................................................... 48

17. Short Timer ................................................................................................................. 48

18. One Touch Comfort ..................................................................................................... 49

19. Hi POWER Mode ........................................................................................................ 49

20. FILTER Indicator ......................................................................................................... 49

9-3. Auto Restart Function .............................................................................................

50

9-3-1. How to Set the Auto Restart Function ....................................................................

50

9-3-2. How to Cancel the Auto Restart Function ..............................................................

51

9-3-3. Power Failure during Timer Operation ....................................................................

51

9-4. Remote Controller ...................................................................................................

52

9-4-1. Remote Controller and Its Functions .....................................................................

52

9-4-2. Operation of Remote Controller ..............................................................................

52

9-4-3. Names and Functions of Indications on Remote Controller ................................ 5

5

– 32 –

FILE NO. SVM-10050

Item Operation flow and applicable data, etc.

Description

1. Basic operation

1. Operation control

Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are controlled.

1) The operation conditions are selected by the remote controller as shown in the below.

2) A signal is sent by ON button of the remote controller.

3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as shown in the below.

4) The indoor controller controls the indoor fan motor and louver motor.

5) The indoor controller sends the operation command to the outdoor controller, and sends/ receives the control status with a serial signal.

6) The outdoor controller controls the operation as shown in the left, and also controls the compressor, outdoor fan motor, 4-way valve and pulse motor valve.

Selection of operation conditions

ON/OFF

Remote controller

Control contents of remote controller

• ON/OFF (Air conditioner / Air purifier)

• Operation select (COOL /HEAT / AUTO / DRY)

• Temperature setup

• Air direction

• Swing

• Air volume select

(AUTO / LOW / LOW+ / MED / MED+ / HIGH)

• ECO

• ON timer setup

• COMFORT SLEEP

• QUIET

• OFF timer setup • PRESET

• Hi-POWER • ONE-TOUCH

Signal receiving

Indoor unit control

Operation command

Serial signal send/receive

Indoor unit

Indoor unit control

• Command signal generating function of indoor unit operation

• Calculation function (temperature calculation)

• Activation compensation function of indoor fan

• Cold draft preventive function

• Timer function

• Indoor heat exchanger release control

• Indoor fan motor

• Louver motor

~

Outdoor unit

Serial signal send/receive

Outdoor unit control


• Frequency control of inverter output

• Waveform composite function

• Calculation function

(Temperature calculation)

• AD conversion function

• Quick heating function

• Delay function of compressor reactivation

• Current release function

• GTr over-current preventive function

• Defrost operation function

Inverter

• Compressor

• Outdoor fan motor

• 4-way valve

• Pulse Motor valve

(PMV)

– 33 –

FILE NO. SVM-10050


Description

1. Basic operation

2. Cooling/Heating operation

The operations are performed in the following parts by controls according to cooling/heating conditions.

1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal starts being transferred form the indoor controller to the outdoor unit.

2) At the indoor unit side, the indoor fan is operated according to the contents of “

2. Indoor fan motor control

” and the louver according to the contents of “

8. Louver control

”, respectively.

3) The outdoor unit controls the outdoor fan motor, compressor, pulse motor valve and

4-way valve according to the operation signal sent from the indoor unit.

Operation ON

Indoor unit control

Setup of remote controller

Indoor fan motor control / Louver control / Operation Hz

Control (Requierment)

Sending of operation command signal


Compressor revolution control / Outdoor fan motor control /

Operation Hz control (Include limit control)

4-way valve control

[ ]

Pulse Motor valve control

3. AUTO operation

Selection of operation mode

As shown in the following figure, the operation starts by selecting automatically the status of room temperature

(Ta) when starting AUTO operation.

*1. When reselecting the operation mode, the fan speed is controlled by the previous operation mode.

Ta

Ts + 1

Ts – 1

Cooling operation

Monitoring (Fan)

Heating operation

1) Detects the room temperature (Ta) when the operation started.

2) Selects an operation mode from Ta in the left figure.

3) Fan operation continues until an operation mode is selected.

4) When AUTO operation has started within 2 hours after heating operation stopped and if the room temperature is

20°C or more, the fan operation is performed with ”Super Ultra LOW” mode for 3 minutes.

Then, select an operation mode.

5) If the status of compressor-OFF continues for 15 minutes the room temperature after selecting an operation mode (COOL/HEAT), reselect an operation mode.

4. DRY operation

DRY operation is performed according to the difference between room temperature and the setup temperature as shown below.

In DRY operation, fan speed is controlled in order to prevent lowering of the room temperature and to avoid air flow from blowing directly to persons.

[ C]

Ta

L (W5)

1) Detects the room temperature (Ta) when the DRY operation started.

2) Starts operation under conditions in the left figure according to the temperature difference between the room temperature and the setup temperature (Tsc).

Setup temperature (Tsc)

= Set temperature on remote controller

(Ts) + (0.0 to 1.0)

3) When the room temperature is lower

1°C or less than the setup temperature, turn off the compressor.

+1.0

+0.5

(W5+W3) / 2

SL (W3)

Tsc

Fan speed

– 34 –

FILE NO. SVM-10050

Description Item


Operation flow and applicable data, etc.

<In cooling operation>

(This operation controls the fan speed at indoor unit side.)

The indoor fan (cross flow fan) is operated by the phasecontrol induction motor. The fan rotates in 5 stages in

MANUAL mode, and in 5 stages in AUTO mode, respectively.

(Table 1)

COOL ON

Fan speed setup

AUTO

Ta

[°C]

+2.5

+2.0

a

+1.5

+1.0

b c

+0.5

d

Tsc e

MANUAL

Indication

L

L+

M

M+

H

Air volume AUTO

M+(WB)

*3

*4

*5

L(W6)

(Fig. 1)

Fan speed

W6

(L + M) / 2

W9

(M + H) / 2

WC

(Fig. 2)

*3 : Fan speed = [(M +) –L] x 3/4 + L

*4 : Fan speed = [(M +) –L] x 2/4 + L

*5 : Fan speed = [(M +) –L] x 1/4 + L

(Linear approximation from M+ and L)

UH: Ultra High

H : High

M+: Medium+

M : Medium

L+ : Low+

L : L ow

L- : Low–

UL : Ultra Low

SUL : Super Ultra Low

* The fan speed broadly varies due to position of the louver, etc.

The described value indicates one under condition of inclining downward blowing.

1) When setting the fan speed to L,

L+, M, M+ or H on the remote controller, the operation is performed with the constant speed shown in Fig. 1.

2) When setting the fan speed to

AUTO on the remote controller, revolution of the fan motor is controlled to the fan speed level shown in Fig. 2 and Table 1 according to the setup temperature, room temperature, and heat exchanger temperature.

W8

W7

W6

W5

W4

W3

W2

W1

WF

WE

WD

WC

WB

WA

W9

Fan speed level

COOL HEAT DRY

H

M+

M

L+

L

L–

UL

SUL

UH

H

M+

M

L+

L

L–

UL

SUL

L+

L

L–

UL

SUL

(Table 1) Indoor fan air flow rate

780

750

740

700

700

650

500

500

RAS-18SKV-E

RAS-18SKV2-E

RAS-18SKV-A

RAS-18SKV-ND

Fan speed Air flow rate

(rpm) (m 3 /h)

1100

1100

1090

991

991

980

1070

980

940

890

957

858

813

758

636

603

591

547

547

492

325

325

RAS-18SKVR-E

RAS-18SKVR-A

780

750

740

700

700

650

500

500


(rpm) (m 3 /h)

1100

1100

1090

972

972

962

1070

980

940

890

940

843

799

745

626

594

583

540

540

486

324

324

850

810

800

760

700

650

500

500

RAS-22SKV-E

RAS-22SKV2-E

RAS-22SKV-A

RAS-22SKV-ND


(rpm) (m 3 /h)

1200

1200

1200

1101

1101

1101

1180

1080

1020

980

1079

968

902

858

713

669

658

614

547

492

325

325

RAS-22SKVR-E

RAS-22SKVR-A

850

810

800

760

700

650

500

500


(rpm) (m 3 /h)

1200

1200

1200

1080

1080

1080

1180

1080

1020

980

1059

951

886

843

702

659

648

605

540

485

324

324

– 35 –

Item



<In heating operation>

HEAT ON

Fan speed setup

AUTO

TC

≥

42°C

NO

YES

MANUAL

Indication

L

L+

M

M+

H

(Fig. 3)

Fan speed

W8

(L + M) / 2

WA

(M + H) / 2

WE

Min air flow rate control

Limited to Min WD tap

Tc

52

51

42

41

*

No limit

* Fan speed =

(TC – (42 + a)) / 10 x (WD – W8) + W8

(Fig. 4)

Basic fan control

TA

[°C]

TSC

–0.5

–1.0

–1.5

–2.0

–2.5

–5.0

b c d e f g

Fan speed

AUTO

L+ (W9)

*1

*2

*3

M+ (WD)

–5.5

*

1 : Fan speed = [(M+) – (L+)] x 1 4 + L+

*

2 : Fan speed = [(M+) – (L+)] x 2 4 + L+

*

3 : Fan speed = [(M+) – (L+)] x 3 4 + L+

H (WE)

FILE NO. SVM-10050

Description

1) When setting the fan speed to L,

L+, M, M+ or H on the remote controller, the operation is performed with the constant speed shown in Fig. 3 and Table 1.

2) When setting the fan speed to

AUTO on the remote controller, revolution of the fan motor is controlled to the fan speed level shown in Fig. 5 according to the set temperature and room temperature.

3) Min air flow rate is controlled by temperature of the indoor heat exchanger (Tc) as shown in Fig. 4.

4) Cold draft prevention, the fan speed is controlled by temperature of the indoor heat exchanger (Tc) as shown in Fig. 6.

5) In order to prevent Cold draft when compressor step during heating operation. Then louver will move to upper position and fan speed will reduce or off.

Cold draft preventive control

46

45

Tc

46

45

33

32

*A+4

*A-4

33

32

*A+4

*A-4

34

33

21

20

*A+4

*A-4

H (WE)

Line-approximate

H and SUL with Tc.

SUL (W2)

Stop

Fan speed MANUAL in starting

Fan speed AUTO in stability

Fan speed AUTO in starting

* No limitation while fan speed MANUAL mode is in stability.

* A: When Tsc

≥

24, A is 24, and when Tsc < 24, A is Tsc

Tsc: Set value

(Fig. 5)

(Fig. 6)

[In starting and in stability]

FAN AUTO

In starting

• Until 12 minutes passed after operation start

• When 12 to 25 minutes passed after operation start and room temp. is 3°C or lower than set temp.

FAN Manual • Room temp. < Set temp. –4°C

In stability

• When 12 to 25 minutes passed after operation start and room temp. is higher than (set temp. –3°C)

• When 25 minutes or more passed after operation start

• Room temp.

≥

Set temp. –3.5°C

– 36 –

FILE NO. SVM-10050

Item

3. Outdoor fan motor control


The blowing air volume at the outdoor unit side is controlled.

Receiving the operation command from the controller of indoor unit, the controller of outdoor unit controls fan speed.

∗

For the fan motor, a DC motor with non-stage variable speed system is used. However, it is limited to 8 stages for reasons of controlling.

Air conditioner ON

(Remote controller)

Indoor unit controller

1) Outdoor unit operation command

(Outdoor fan control)

2) Fan speed when the motor stopped.

NO

≥

400

YES

OFF status of fan motor continues.

Description

1) The operation command sent from the remote controller is processed by the indoor unit controller and transferred to the controller of the outdoor unit.

2) When strong wind blows at outdoor side, the operation of air conditioner continues with the fan motor stopped.

3) Whether the fan is locked or not is detected, and the operation of air conditioner stops and an alarm is displayed if the fan is locked.

4) According to each operation mode, by the conditions of outdoor temperature (To) and compressor revolution, the speed of the outdoor fan shown in the table is selected.

Fan motor ON

3) Fan lock

NO

YES

Air conditioner

OFF

4) Motor operates as shown in the table below.

Alarm display

Tap

f 0 f 1 f 2 f 3 f 4 f 5 f 6 f 7

In cooling operation

Compressor speed (rps)

< 22.1

< 50.3

50.3 <

MIN MAX MIN MAX MIN MAX

To

To > 38°C

To > 28°C

To > 15°C

To > 5.5°C f 6 f 9 f 5 f 9 f 3 f 1 f 7 f 3 f 1 f 3 f 8 f B f A f E f 7 f B f 9 f E f 5 f 1 f 1 f 9 f 7 f 5 f 7 f 3 f 3 f B f 9 f 7 To > 0°C

To > -5°C

To > 38°C

To > 28°C

During ECO,

QUIET and comfort sleep

To > 15°C

To > 5.5°C

To > 0°C

To > -5°C

When To is abnormal f 0 f 6 f 0 f 1 f 1 f 9 f 5 f 9 f 3 f 7 f 1 f 3 f 1 f 3 f 1 f F f 0 f 8 f 7 f 5 f 0 f 1 f 3 f B f B f 9 f 1 f 7 f 1 f 5 f 3 f F f 1 f A f 9 f 7 f 3 f 3 f 1 f 1 f 4 f B f B f B f 9 f 7 f 4 f F

18SAV-E 2

18SAV 2 -E

18SAV 2 A

0

230

300

350

410

480

500

530

In Heating operation

Compressor speed (rps)

To > 10°C

To

To > 5.5°C

To > -5°C

To -5°C

To > 10°C

< 30.5

f 6 f 8 f A f A f 5

< 55.1

f 8 f A f B f B f 7

55.1 <

f 9 f C f D f D f 9

During To > 5.5°C

ECO mode To > -5°C

To -5°C

When To is abnormal f 7 f 9 f 9 f D f 9 f A f A f D f B f B f B f D

Outdoor fan speed (rpm)

22SAV-E 2

22SAV 2 -E

22SAV 2 A

0

230

300

350

410

480

500

530

Tap

f 8 f 9 f A f B f C f D f E f F

18SAV-E 2

18SAV 2 -E

18SAV 2 A

560

640

22SAV-E 2

22SAV 2 -E

22SAV 2 A

560

640

670

700

670

750

800 920

800 920

900 1000

900 1000

– 37 –

FILE NO. SVM-10050

Item

4. Capacity control


The cooling or heating capacity depending on the load is adjusted.

According to difference between the setup value of temperature and the room temperature, the capacity is adjusted by the compressor revolution.


Set temp. (Ts)

Ts –Ta

Correction of Hz signal

Indoor unit

Room temp. (Ta)

Detection of electromotive force of compressor motor winding

Detection of motor speed and rotor position

Correction value of Hz signal

≤

Operating Hz

Description

1) The difference between set temperature on remote controller

(Ts) and room temperature (Ta) is calculated.

2) According to the temperature difference, the correction value of

Hz signal which determines the compressor speed is set up.

3) The rotating position and speed of the motor are detected by the electromotive force occurred on the motor winding with operation of the compressor.

4) According to the difference resulted from comparison of the correction value of Hz signal with the present operation Hz, the inverter output and the commutation timing are varied.

5) Change the compressor motor speed by outputting power to the compressor.

∗

The contents of control operation are same in cooling operation and heating operation

Inverter output change

Commutation timing change

Change of compressor speed

5. Current release control

This function prevents troubles on the electronic parts of the compressor driving inverter.

This function also controls drive circuit of the compressor speed so that electric power of the compressor drive circuit does not exceed the specified value.

Outdoor unit inverter main circuit control current

Operating current

≤

Setup value

Low

Capacity control continues.

High

Outdoor temp. To

Setup of current release point

Reduce compressor speed

Current decrease

1) The input current of the outdoor unit is detected in the inverter section of the outdoor unit.

2) According to the detected outdoor temperature, the specified value of the current is selected.

3) Whether the current value exceeds the specified value or not is judged.

4) If the current value exceeds the specified value, this function reduces the compressor speed and controls speed up to the closest one commanded from the indoor unit within the range which does not exceed the specified value.

45˚C

40˚C

16˚C

11˚C

Outdoor temp.

44˚C

39˚C

15.5˚C

10.5˚C

Cooling current release value

18SAV-E 2

18SAV 2 E

18SAV 2 A

6.07A

7.12A

22SAV-E

22SAV

22SAV

2

2

7.05A

9.30A

-

2

-E

A

8.47A

10.50A

Heating current release value

18SAV-E 2

18SAV 2 E

18SAV 2 A

22SAV-E

22SAV

22SAV

2

2 -

2

-E

A

8.77A

10.88A

– 38 –

FILE NO. SVM-10050


Description

6. Release protective control by temperature of indoor heat exchanger

<In cooling/dry operation>

(Prevent-freezing control for indoor heat exchanger)

In cooling/dry operation, the sensor of indoor heat exchanger detects evaporation temperature and controls the compressor speed so that temperature of the heat exchanger does not exceed the specified value.

7˚C

6˚C

Usual cooling capacity control

R

Q

When the value is in Q zone, the compressor speed is kept.

1) When temperature of the indoor heat exchanger drops below 5°C, the compressor speed is reduced. (P zone)

2) When temperature of the indoor heat exchanger rises in the range from 6°C to under 7°C, the compressor speed is kept.

(Q zone)

3) When temperature of the indoor heat exchanger rises to 7°C or higher, the capacity control operation returns to the usual control in cooling operation.

(R zone)

P

5˚C

Reduction of compressor speed

55˚C

52˚C

48˚C

<In heating operation>

(Prevent-overpressure control for refrigerating cycle)

In heating operation, the sensor of indoor heat exchanger detects condensation temperature and controls the compressor speed so that temperature of the heat exchanger does not exceed the specified value.

Reduction of compressor speed

Usual heating capacity control

P

Q

When the value is in Q zone, the compressor speed is kept.

R

1) When temperature of the indoor heat exchanger rises in the range from 50°C to 55°C, the compressor speed is kept.

(Q zone)

When temperature of the indoor heat exchanger drops in the range from 46°C to under 55°C, the compressor speed is kept.

(Q zone)

2) When temperature of the indoor heat exchanger rises to 55°C or higher, the compressor speed is reduced. (P zone)

3) When temperature of the indoor heat exchanger does not rise to

50°C, or when it drops below to

46°C, the capacity control operation returns to the usual control in heating operation.

(R zone)

– 39 –

FILE NO. SVM-10050


7. Defrost control

(Only in heating operation)

(This function removes frost adhered to the outdoor heat exchanger.)

The temperature sensor of the outdoor heat exchanger (Te sensor) judges the frosting status of the outdoor heat exchanger and the defrost operation is performed with 4-way valve reverse defrost system.

Start of heating operation

–3˚C

–7˚C

–26˚C

0’ 10’ 15’

*

Te0 detection time

29’ 35’

Operation time

(Minute)

C zone

A zone

B zone

* The minimum value of Te sensor 10 to 15 minutes after start of operation is stored in memory as Te0.

A zone

B zone

C zone

Table 1

When Te0 - TE

≥

2.5 continued for 2 minutes in A zone, defrost operation starts.

When the operation continued for 2 minutes in B zone, defrost operation starts.

When Te0 - TE

≥

3 continued for 2 minutes in C zone, defrost operation starts.

Description

The necessity of defrost operation is detected by the outdoor heat exchanger temperature. The conditions to detect the necessity of defrost operation differ in A,

B, or C zone each. (Table 1)

<Defrost operation>

• Defrost operation in A to C zones

1) Stop operation of the compressor for

20 seconds.

2) Invert (ON) 4-way valve 10 seconds after stop of the compressor.

3) The outdoor fan stops at the same time when the compressor stops.

4) When temperature of the indoor heat exchanger becomes 38°C or lower, stop the indoor fan.

<Finish of defrost operation>

• Returning conditions from defrost operation to heating operation

1) Temperature of outdoor heat exchanger rises to +8°C or higher.

2) Temperature of outdoor heat exchanger is kept at +5°C or higher for

80 seconds.

3) Defrost operation continues for

15 minutes.

<Returning from defrost operation>

1) Stop operation of the compressor for approx. 50 seconds.

2) Invert (OFF) 4-way valve approx. 40 seconds after stop of the compressor.

3) The outdoor fan starts rotating at the same time when the compressor starts.

– 40 –


8. Louver control

1) Louver position

This function controls the air direction of the indoor unit.

• The position is automatically controlled according to the operation mode (COOL/HEAT).

• The set louver position is stored in memory by the microcomputer, and the louver returns to the stored position when the next operation is performed. (Cooling/heating memory position)

The angle of the louver is indicated as the horizontal angle is 0°.

FILE NO. SVM-10050

Description

1) Louver position in cooling operation

Cooling operation/

AUTO (COOL)

Initial setting of “Cooling storage position”

Louver : Horizontal blowing (37.4°)

2) Louver position in heating operation

Heating operation/

AUTO (HEAT)

Initial setting of “Heating storage position”

Louver : Directs downward (76.9°)

2) Air direction adjustment

Horizontal blowing

Inclined blowing

Air direction

Blowing downward

Inclined blowing

Horizontal blowing

• The louver position can be arbitrarily set up by pushing [FIX] button.

3) Swing • Swing operation is performed in width 35° with the stop position as the center.

• If the stop position exceeds either upper or lower limit position, swing operation is performed in width 35° from the limit which the stop position exceeded.

• Swing

When pushing [SWING] button during operation, the louver starts swinging.

– 41 –

TA

+6.5

+6.0

+5.5

+5.0

+4.5

+4.0

+3.5

+3.0

+2.5

+2.0

+1.5

+1.0

+0.5

TSC

–0.5

–1.0

–2.0


9. ECO operation

When pushing [ECO] button on the remote controller, a

Economic operation is performed.

<Cooling operation>

This function operates the air conditioner with the difference between the set and the room temperature as shown in the following figure.

Zone Frequency

FAN

6

5

4

9

8

7

12

11

10

3

2

Dry Max

∗

12

∗

11

∗

10

∗

9

∗

8

1

Min

Hz

OFF

1H

Hz

2H 3H 4H Time

* 12 (DRY max - COOL min) /6 × 5 + COOL min





Cool min

DRY max

18SKV-E,18SKVR-E

18SKV 2 -E,18SKVA

18SKV R A ,18SKVND

10

49

22 SKV-E, 22 SKVR-E

22 SKV 2 -E, 22 SKVA

22 SKV R A , 22 SKVND

10

50

FILE NO. SVM-10050

Description

<Cooling operation>

1) The control target temperature increases 0.5°C per hour up to

2°C starting from the set temperature when ECONO has been received.

2) The indoor fan speed depends on presetting and can change every speed after setting ECO operation.

3) The compressor speed is controlled as shown in the left figure.

0

–0.5

–1.0

–1.5

–2.0

–2.5

–3.0

–4.0

–5.0

–5.5

<Heating operation>

30 minutes

A

B

A

→

Time Compressor speed

0Hz

A zone aHz

<Heating operation>

1) Setting the compressor speed to

Max. aHz, the temperature zone in which the operation can be performed with Max. cHz is gradually widened after 30 minutes passed when starting

ECO operation.

2) The indoor fan speed depends on presetting and can change every speed after setting ECO operation.

C

B

B zone a to cHz

–11.0

–11.5

C

C zone cHz

Hz

a c

18SKV-E,18SKVR-E

18SKV 2 -E,18SKVA

18SKV R A ,18SKVND

10

68

22 SKV-E, 22 SKVR-E

22 SKV 2 -E, 22 SKVA

22 SKV R A , 22 SKVND

10

72

– 42 –

Item

10. Temporary operation


Pushing [RESET] button starts the temporary operation of [AUTO] operation. When keeping

[RESET] button pushed for 10 seconds or more, the temporary [COOL] operation is performed.

YES

Filter lamp ON

NO

Did you push [RESET] button for 3 seconds or more?

YES

Did you push [RESET] button for 10 seconds or more?

NO

Switch to [AUTO RESTART] control.

NO

YES

Push RESET button.

Temporary [AUTO] operation

Temporary [COOL] Operation

FILE NO. SVM-10050

Description

1) When pushing [RESET] button, the temporary [AUTO] operation starts.

2) When keeping [RESET] button pushed for

3 seconds or more, Pi, Pi, Pi sound is heard and [AUTO RESTART] control is changed.

3) When keeping [RESET] button pushed for

10 seconds or more, “Pi” sound is heard and the temporary [COOL] operation starts.

4) If the filter lamp goes on, push [RESET] button to go off the filter lamp, and then push [RESET] button again.

5) To stop the temporary operation, push the button again.

11. Air purifying only control

RAS-18SKVR-E,

RAS18 SKVRA,

RAS22 SKVR-E,

RAS-22SKVRA

This function generates nagative ion while cleaning the air in the room.

If air purifier-ON signal is received while the air conditioner stops, the air purifier starts operation, and if it is received while the air conditioner operates, the air conditioner and the air purifier start operation.

The air ion generator operates linked with the air purifying operation.

Present status

Stop

Air purifier only

Air conditioner

Joint use of AC and air purifier

Operation button

PURE button

Air purifier

Stop (All)

Air conditioner

AC operation*

AC + Air purifier

AC + Air purifier

AC operation

All stop

All stop

* When the previous operation was the operation of air conditioner + air purifier, an operation of air conditioner + air purifier starts by pushing AC button on the remote controller.

(Operation of air conditioner + air purifier is stored in memory.)

*1 Swing is available

*2 Fan speed is Fan Auto mode varies in order, (M + 1)

→

(L)

→

(L–)

→

(SL).

Air purifying operation

AC + Air purifying operation

Louver*1

Cooling position

Follows to AC operation

Fan speed *2

AUTO, L, L+, M, M+, H

Follows to AC operation

Sending air purifier-ON

Sending air purifier-OFF

1

Air conditioner stops

1 , 2

2

Air conditioner operates

Start of air purifier-ON Operation lamp ON

*1

Memory position of louver/COOL

*2

Fan ON

Air conditioner + air purifier operate

3

Air purifier operates

3 , 4

Operation lamp OFF

Fan stop

Air purifier-OFF

4

Air conditioner +

Air purifier operate

Filter-OFF

Air conditioner operates

Air purifier ON Louver close

Air purifying operation All stop

– 43 –

FILE NO. SVM-10050


11. Air purifying control [Detection of abnormality]

Error input was detected by

5 times or more

YES

Air purifier power OFF

NO

Approx. 10 minutes passed from the error input was detected.

YES

Filter lamp (1Hz) ON

NO

1

Air purifying operation

PURE lamp ON

Air purifier power ON

∗

YES

Air purifier power estimates

1000H

NO

Error input is detected

YES

Filter lamp (1Hz) ON

NO

Air purifier power OFF

2

Q

Reset by RESET button.

R

Reset by RESET button or by the stop direction from the remote controller.

* When the breaker is turned [ON] or RESET button is pushed while the FILTER indicator is turned on, the air purifier is not turned on until the integrated operation time of the indoor fan exceeds 1 hour after operation start.

It is the safety measures considering an incomplete drain when electric dust collector has been cleaned with water.

Description

1. Purpose

The air purifying control function is to alert the user to trouble in the ionizing or air purifying operation.

2. Description

Trouble is determined to have occurred

(indicated by the FILTER indicator) in the following 4 cases.

1) When a count of 1000H has been reached on the timer

2) When the panel switch has been set to

OFF by the opening of the air inlet grille, etc.

3) When an abnormal discharge caused by a symptom such as the build-up of dirt has been detected while the air purifier is ON.

4) When the electric dust collector has not been installed correctly

∗

Trouble case 2) or 3) is deemed to have occurred when the action concerned continues for more than one second.

3. Operation

The sequence that FILTER indicator is turned on are described in the left flowchart.

1) When 1000H timer counts up, the

FILTER indicator keeps lighting even if the operation is stopped by the remote controller.

The timer is stored in memory of the microcomputer, and the operation time is cleared by filter RESET button on the indoor unit.

(FILTER indicator goes off.)

2) If the air purifying error input was detected by 5 times or under, turn on the purifier again approx. 10 minutes after and judge it again.

If the air purifying error input was detected by 5 times or more, determine the error and turn on the

Filter lamp.

– 44 –

Item

12. Pulse motor valve (PMV) control


This function controls throttle amount of the refrigerant in the refrigerating cycle.

According to operating status of the air conditioner, this function also controls the open degree of valve with an expansion valve with pulse motor.

Starting up

Initialize

Move to initial position

FILE NO. SVM-10050

Description

1) When starting the operation, move the valve once until it fits to the stopper. (Initialize)

* In this time, “Click” sound may be heard.

2) Adjust the open degree of valve by super heat amount. (SH control)

3) If the discharge temperature was excessively up, adjust the open degree of valve so that it is in the range of set temperature.

(Discharge temp. control)

4) When defrost operation is performed, the open degree of valve is adjusted according to each setup conditions during preparation for defrost or during defrost operation

(4-way valve is inversed.).

5) To turn off the compressor while the air conditioner stops by control of the thermostat or by remote controller, adjust the open degree of valve to the setup value before stop of the compressor.

Compressor ON

SH control

Td release control

PMV open degree control

Stop by remote controller

Power OFF

Room temp. sensor

(Ta sensor) control

Defrost

∗

SH (Super Heat amount) =

Ts (Temperature of suction pipe of the compressor) –

Tc or Te (Heat exchanger temperature at evaporation side)

∗

PMV: Pulse Motor Valve

– 45 –

Item

13. Self-Cleaning function


Unit now performing cooling or dry operation

Push “STOP” button

Only timer indicator lights, and Self-Cleaning operation starts

Time set now elapses

Operation stops

FILE NO. SVM-10050

Description

1. Purpose

The Self-Cleaning operation is to minimize the growth of mold, bacteria etc. by running the fan and drying so as to keep the inside of the air conditioner clean.

Self-Cleaning operation

When the cooling or dry operation shuts down, the unit automatically starts the

Self- Cleaning operation which is then performed for the specified period based on duration of the operation which was performed prior to the shutdown, after which the Self-Cleaning operation stops.

(The Self-Cleaning operation is not performed after a heating operation.)

2. Operation

1) When the stop signal from the remote controller or timer-off function is received, only the timer indicator light.

2) The period of the Self-Cleaning operation is determined by the duration of the operation performed prior to the reception of the stop code.

3) After the Self-Cleaning operation has been performed for the specified period, the unit stops operating.

• During Self-Cleaning operations:

The louver opens slightly. The indoor fan operates continuously at a speed of 500 rpm.

Self-Cleaning operation times

Cooling: Auto (cooling) Dry

Operation time

Up to 10 minutes

Self-Cleaning operation time

No Self-Cleaning operation performed (0 minutes)

10 minutes or longer 30 minutes

Heating: Auto (heating)

Auto (fan only)

Shutdown

No Self-Cleaning operation performed

• To stop an ongoing Self-Cleaning operation at any time

Push the start/stop button on the remote controller twice during the Self-Cleaning operation.

(After pushing the button for the first time, push it for the second time without delay

(within 10 minutes).)

– 46 –

FILE NO. SVM-10050

Description Item Operation flow and applicable data, etc.

13. Self-Cleaning function

Operation display

FCU fan

FCU louver

Timer display

Compressor

CDU fan

• Self-Cleaning diagram

ON

ON rpm is depend on presetting.

OPEN

ON or OFF depend on presetting of timer function.

ON or OFF depend on presetting per room temperature.

ON or OFF depend on presetting per room temperature.

OFF

ON

(450RPM)

OPEN (12.7°)

ON

OFF

OFF

OFF

OFF

CLOSE

ON or OFF depend on presetting of timer function.

OFF

OFF

Operation time

Cool mode or dry mode operation more than 10 mins.

Self-Cleaning mode operate

30 mins.

Turn off by remote controller or timer-off function.

Automatically turn-off.

14. Remote

Controller-A or

B selection

Setting the remote controller

To separate using of remote controller for each indoor unit in case of 2 air conditioner are installed nearly.

1. Purpose

This operation is to operate only one indoor unit using one remote controller.

Remote Controller B Setup.

1) Push RESET button on the indoor unit to turn the air conditioner ON.

2) Point the remote controller at the indoor unit.

3) Push and hold CHK button on the Remote Controller by the tip of the pencil.

“00” will be shown on the display.

4) Push MODE during pushing CHK.

“B” will show on the display and “00” will disappear and the air conditioner will turn OFF.

The Remote Controller B is memorized.

Note :

1. Repeat above step to reset Remote Controller to be A.

2. Remote Controller A has not “A” display.

3. Default setting of Remote Controller from factory is A.

2. Description

When operating one indoor unit in a situation where two indoor units have been installed in the same room or nearby rooms, this operation prevents the remote controller signal from being received simultaneously by both units, thus preventing both units from operating.

3. Operation

The indoor unit on which the remote controller selection has been set to B receives the signal of the remote controller also set to B.

(At the factory the remote controller selection is set to A on all the indoor units.

There is no A setting display.)

AUTO

“B” Display

“00” Display

– 47 –

Item

15. QUIET mode


When the [QUIET] button is pushed, the fan of the indoor unit will be restricted the revolving speed at speed L - until the [QUIET] button is pushed once again (cancel Quiet mode).

16. COMFORT

SLEEP

17. Short Timer

Cooling mode

• The preset temperature will increase as shown on ECO operation (Item No. 9)

• Push the [COMFORT SLEEP] button to choose the operating hours.

Repeat pushing to select the hours.

(1hr, 3hr, 5hr or 9hr)

• If the [COMFORT SLEEP] button is pushed again means cancel comfort sleep mode.

Heating mode

• The preset temperature will drop down as shown on ECO operation (Item No. 9)

• Push the [COMFORT SLEEP] button to choose the operating hours.

Repeat pushing to setect the hours.

(1hr, 3hr, 5hr or 9hr)

• If the [COMFORT SLEEP] button is pushed again means cancel comfort sleep mode.

In the normal condition, after switching one circuit breaker, 3-minute delay time for compressor and 1 hour for plasma air purifier are set for the maintenance of the unit.

FILE NO. SVM-10050

Description

Quiet mode is the system which, control the revolving speed of indoor fan to work constantly at lower than speed L. In addition, noise level of indoor unit is less than usual.

Remarks :

1. Quiet mode is unable to work in dry mode.

2. Quiet mode is appropriate to work with less cooling load and less heating load condition.

Because of the fan speed L- may cause not enough the cooling capacity or heating capacity.

The principles of comfort sleep mode are:

• Quietness for more comfortable. When room temperature reach setting temperature

• Save energy by changing room temperature automatically.

• The air condition can shut down by itself automatically.

Remarks:

1. Comfort sleep mode will not operate in dry mode and fan only mode.

PRESET

ONE-TOUCH

TEMP

FAN

MODE

QUIET PURE

COMFORT

SLEEP

SWING

FIX Hi-POWER ECO

4

Purpose

To start the unit immediately for the purpose of testing, trial...etc, short timer can be used.

maintenance of the unit.

Short Timer Setting

Q

Push [ ] button to turn the unit OFF.

R

Set the operation mode or plasma air purifier on the remote controller without sending the signal to the unit.

S

Use the tip of the pencil to push the [CHK] button and hold, “00” will show on display, then push [SET] button to make “00” disappear.

T

Push [ ] button to turn the unit ON.

U

When short timer is activated, all setting on the remote controller operates immediately, besides, all indicatiors on front panel turn ON continuously for 3 seconds.

TIMER

CLR

ON OFF

SLEEP

CHK FILTER CLOCK

SET

3

– 48 –

Item

18. One Touch

Comfort

FILE NO. SVM-10050


Description

One touch comfort is the fully automated operation that is set according to the preferable condition in a region.

Fan

Operation

0

AUTO

12

*AUTO/L L

25 Time after operation starts (min)

∗

AUTO/L: Fan operates depends on the setting temperature and room temperature.

During the One Touch Comfort mode if the indoor unit receives any signal with other operation mode, the unit will cancel the comfort mode and operates according to the signal received.

Operation condition for model to

Europe market

When an indoor unit receives “One

Touch Comfort Signal” from the remote controller, the indoor unit operates as following.

1) Air conditioner starts to operation when the signal is received, even if the air conditioner was OFF.

2) Operation mode is set according to room temperature, the same as

AUTO mode.

3) Target temperature is 24°C.

4) Louver position is set as stored position of the operating mode.

5) Fan is controlled as followings.

19. Hi POWER Mode ([Hi-POWER] button on the remote controller is pushed)

When [Hi-POWER] button is pushed while the indoor unit is in Auto, Cooling or Heating operation, Hi

POWER mark is indicated on the display of the remote controller 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 1 degree

(The value of the preset temperature on the remote controller does not change.)

The indoor unit’s fan speed level increases 1 tap.

3. Heating operation

• The preset temperature increases 2 degree

(The value of the preset temperature on the remote controller does not change.)

The indoor unit’s fan speed level increases 1 tap

4. The Hi POWER mode can not be set in Dry operation

20. FILTER Indicator

RAS-18SKVR-E,

RAS18 SKVRA,

RAS22 SKVR-E,

RAS-22SKVRA only

When the elapsed time reaches 1000 hours after air purifier operation, the FILTER indicator lights.

After cleaning the filters, turn off the FILTER indicator.

How to Turn Off FILTER Indicator

Push [RESET] button on the indoor unit.

NOTE :

If [RESET] button is pushed while the FILTER indicator is not lit, the indoor unit will start the automatic operation.

When you want a temporary operation while the

FILTER lamp lights, push [RESET] button to turn off the FILTER lamp. (See page 39)

– 49 –

FILE NO. SVM-10050

9-3. Auto Restart Function

This 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 a power supply being accidentally shut down.

The operation will resume without warning 3 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.

9-3-1. How to Set the 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 [RESET] button located in the center of the front panel continuously for 3 seconds.

The unit receives the signal and beeps 3 times.

The unit then restarts operating automatically in the event of power supply being accidentally shut down.

• When the unit is stand-by (Not operating)

Operation

Push [RESET] button for more than

3 seconds. (Less than 10 seconds)

Hi POWER FILTER PAP TIMER OPERATION

RESET

Motions

The unit is on standby.

↓

The unit starts to operate.

The green indicator is on.

↓

After approx. 3 seconds,

The unit beeps 3 times and continues to operate.

The green indicator flashes for 5 seconds.

If the unit is not required to operate at this time, push [RESET] button once more or use the remote controller to turn it off.

• When the unit is in operation

Operation




RESET

Motions

The unit is in operation.

↓


The unit stops operating.

↓

The green indicator is turned off.


The unit beeps 3 times.

The green indicator flashes for 5 seconds.

If the unit is required to operate at this time, push [RESET] button once more or use the remote controller to turn it on.

• While the filter check indicator is on, the RESET button has the function of filter reset button.

– 50 –

FILE NO. SVM-10050

9-3-2. How to Cancel the Auto Restart Function

To cancel auto restart function, proceed as follows :

Repeat the setting procedure : the unit receives the signal and beeps 3 times.

The unit will be required to be turned on with the remote controller after the main power supply is turned off.

• When the system is on stand-by (not operating)

Operation




Motions

The unit is on standby.

↓

The unit starts to operate.

↓



The unit beeps 3 times and continues to operate.

If the unit is not required to operate at this time, push [RESET] button once more or use the remote controller to turn it off.

RESET

• When the system is operating

Operation




RESET

Motions

The unit is in operation.

↓


The unit stops operating.

↓

The green indicator is turned off.


The unit beeps 3 times.

If the unit is required to operate at this time, push [RESET] button once more or use the remote controller to turn it on.

9-3-3. Power Failure during Timer Operation

When the unit is turned off because of power failure during timer operation, the timer operation is cancelled.

In that case, set the timer operation again.

NOTE :

The Everyday Timer is reset while a command signal can be received from the remote controller even if it stopped due to a power failure.

– 51 –

FILE NO. SVM-10050

9-4. Remote Controller

9-4-1. Remote Controller and Its Functions

1

Infrared signal emitter

2

Start/Stop button

3

Mode select button (MODE)

4

Temperature button (TEMP)

5

Fan speed button (FAN)

6

Swing louver button (SWING)

7

Set louver button (FIX)

8

On timer button (ON)

9

Off timer button (OFF)

10

Sleep timer button (SLEEP)

11

Setup button (SET)

12

Clear button (CLR)

13

Memory and Preset button (PRESET)

14

One Touch button (ONE-TOUCH)

15

High power button (Hi-POWER)

16

Economy button (ECO)

17

Quiet button (QUIET)

18

Comfort sleep button (COMFORT SLEEP)

19

Plasma Air Purifier button (PURE)

(RAS-18SKVR-E, RAS-

18

SKVR-

A,

RAS-

22

SKVR-E, RAS-22SKVR-

A

only)

20

21

22

Filter reset button (FILTER)

Clock Reset button (CLOCK)

Check button (CHK)

9-4-2. Operation of Remote Controller

1. ONE-TOUCH

Push the “ONE-TOUCH” button for fully automated operation that is customised to the typical consumer preferences in your region of the world. The coutomised settings control temperature air flow strength, air flow direction and other settings to provide you alternate contact with “ONE-TOUCH” OF THE BUTTON.

If you prefer other settings you can select from the many other operation functions of your TOSHIBA unit

Push ONE-TOUCH : Start the operaton.

2. AUTOMATIC OPERATION

To automatically select cooling, heating, or fan only operation.

1. Push MODE : Select A.

2. Push

TEMP

MODE : Select A.

3. COOLING / HEATING / FAN ONLY OPERATION

To automatically select cooling, heating, or fan only operation.

1. Push MODE : Select Cool , Heat , or Fan only .

2. Push

TEMP

MODE : Set the desired temperature. Cooling: Min. 17°C, Heating : Max. 30°C,

Fan Only: No temperature indication

3. Push FAN : Select AUTO, LOW ,

LOW+ , MED , MED+ , or HIGH .

– 52 –

4. DRY OPERATION (COOLING ONLY)

For dehumidification, a moderate cooling performance is controlled automatically.

FILE NO. SVM-10050

1. Push MODE : Select Dry .

2. Push

TEMP

MODE : Set the desired temperature.

5. AIR PURIFYING OPERATION

(RAS-18KVR-E, RAS-18SKVR-A, RAS-22SKVR-E, RAS-22SKVRA only)

During air conditioner operation

Push PURE to start and air ionizer operation.

The plasma air purifier and air ionizer can be activated or deactivated during air conditioner is stopped and the air ionizer starts in conjunction with plasma air purifier operation.

Note:

The FILTER indicator (orange) turns on after PURE operation is performed for about 1000 hours.

6. Hi POWER OPERATION

To automatically control room temperature and airflow for faster cooling or heating operation

(except in DRY and FAN ONLY mode)

Push Hi-POWER : Start and stop the operation.

7. ECO OPERATION

To automatically control room to save energy (except in DRY and FAN ONLY mode)

Push ECO : Start and stop the operation.

Note:

Cooling operation; the set temperature will increase automatically 1 degree/hour for 2 hours

(maximum 2 degrees increase). For heating operation the set temperature will decrease.

8. TEMPORARY OPERATION

In case of the misplaced or discharged remote controller

• Pushing the RESET button, the unit can start or stop without using the remote controller.

• Operation mode is set on AUTOMATIC operation, preset temperature is 24°C and fan operation is automatic speed.

9. TIMER OPERATION

Setting the ON Timer Setting the OFF Timer

1 Push

ON

: Set the desired ON timer.

Push

OFF

: Set the desired OFF timer.

2

3

Push

SET

: Set the timer.

Push

CLR

: Cancel the timer.

Push

SET

: Set the timer.

Push

CLR

.

Daily timer allows the user to set both the ON and OFF timers and will be activated on a daily basis.

Setting

Daily

Timer

1 Push

ON

: Set the ON timer.

3 Push

SET

.

2 Push

OFF

: Set the OFF timer.

4

Push

SET

button during the

( or ) mark flashing.

• During the daily timer is activation, both arrows ( or ) are indicated.

– 53 –

FILE NO. SVM-10050

Note:

• Keep the remote controller in accessible transmission to the indoor unit; otherwise, the time lag of up to 15 minutes will occur.

• The setting will be saved for the next same operation.

10. PRESET OPERATION

Set your preferred operation for future use.

The setting will be memorized by the unit for future operation (except air flow direction).

1. Select your preferred operation.

2. Push and hold PRESET for 3 seconds to memorize the setting. The mark displays.

3. Push PRESET : Operate the preset operation.

11. AUTO RESTART OPERATION

To automatically restart the conditioner after the power failure (Power of the unit must be on.)

Setting

1. Push and hold the RESET button on the indoor unit for 3 seconds to set the operation.

(3 beep sound and OPERATION lamp flashes 5 time/sec for 5 seconds)

• Do not operate ON timer and OFF timer.

2. Push and hold the RESET button on the indoor unit for 3 seconds to cancel the operation.

(3 beep sound but OPERATION lamp does not flash)

12. QUIET OPERATION

To operate at super low fan speed for quiet operation (except in DRY mode)

Push QUIET : Start and stop the operation.

Note:

Under certain conditions, QUIET operation may not provide adequate cooling or heating due to low sound features.

13. COMFORT SLEEP OPERATION

To save energy while sleeping, automatically control air flow and automatically turn OFF.

Push COMFORT SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.

Note:

The cooling operation, the set temperature will increase automatically 1 degree/hour for 2 hours

(maximum 2 degrees increase). For heating operation, the set temperature will decrease.

14. SLEEP TIMER OPERATION

To start the sleep timer (OFF timer) operation

Push SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.

– 54 –

FILE NO. SVM-10050

9-4-3. Names and Functions of Indications on Remote Controller

[Display]

All indications, except for the clock time indicator, are displayed by pushing the button.

1

Transmission mark

This transmission mark indicates when the remote controller transmits signals to the indoor unit.

2

Mode indicator

Indicates the current operation mode.

(AUTO : Automatic control, A : Auto changeover control, : Cool, : Dry, : Heat)

3

Temperature indicator

Indicates the temperature setting.

(17°C to 30°C)

4

PURE indicator

Shows that the electrical air purifying operation is in progress.

5

FAN speed indicator

Indicates the selected fan speed.

AUTO or five fan speed levels

(LOW , LOW + , MED

HIGH ) can be shown.

, MED +

Indicates AUTO when the operating mode is either

AUTO or : Dry.

6

TIMER and clock time indicator

The time setting for timer operation or the clock time is indicated.

,

The current time is always indicated except during

TIMER operation.

7

Hi POWER indicator

Indicates when the Hi POWER operation starts.

Push the Hi-POWER button to start and push it again to stop the operation.

8

(PRESET) indicator

Flashes for 3 seconds when the PRESET button is pushed during operation.

The mark is shown when holding down the button for more than 3 seconds while the mark is flashing.

Push another button to turn off the mark.

9

ECO indicator

Indicates when the ECO is in activated.

Push the ECO button to start and push it again to stop operation.

10

A, B change indicator remote controller

When the remote controller switching function is set, “B” appears in the remote controller display.

(When the remote controller setting is “A”, there is no indication at this position.)

11

Comfort sleep

Indicates when comfort sleep is activaled.

Push comfort sleep button to select.

12

Quiet

Indicates when quiet is activated.

Push quiet button to start and push it again to stop operation.

13

One-Touch

Indicates when one touch comfort is activated.

Push one-touch button to start the operation.

14

Swing

Indicates when louver is swing.

Push swing button to start the swing operation and push it again to stop the swing operation.

10

13

1

12

7

11

4

3

2

14

8

6

5

9

– 55 –

10. INSTALLATION PROCEDURE

10-1. Installation Diagram of Indoor and Outdoor Units

FILE NO. SVM-10050

170 mm or mor

Pure Air Purifier

SKVR only

Hook 1 Installation plate

For the rear left and left piping

Wall

Hook

170 mm or more

Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation.

Air filter

Do not allow the drain hose to get slack.

Cut the piping hole sloped slightly.

(Attach to the f

Shield pipe ront panel.)

Make sure to run the drain hose sloped downward.

Pure Air Pur ifier

5 Filter

3 Batteries

6 Filter

Vinyl tape

Apply after carrying out a drainage test.

2 Wireless remote controller

8

Pan head wood screw

4 Remote controller

holder

The auxiliary piping can be connected to the left, rear left, rear right, right, bottom right or bottom left.

Right

Rear right

Bottom right

Rear left

Left

Bottom left

100 mm or more

100

mm or more

Saddle

Insulate the refrigerant pipes separately with insulation, not together.

600 mm or more

Extension drain hose

(Not available, provided by installer)

60

0 mm or more

8 mm thick heat resisting polyethylene foam

Before installing the wireless remote controller

• Loading Batteries

1. Remove the battery cover.

2. Insert 2 new batteries (AAA type) following the (+) and (–) positions.

2 Wireless remote controller

A

C

L

– 56 –

3 Batteries

FILE NO. SVM-10050

10-2. Optional Parts, Accessories and Tools

10-2-1. Optional Installation Parts

Part Code

Indoor unit name

Parts name

Refrigerant piping

Liquid side (Outer diameter) Gas side (Outer diameter)

Q’ty

Y

RAS-18SKVR-E, 18SKV-E

RAS-22SKVR-E, 22SKV-E

RAS-18SKV2-E, 18SKV2-E

RAS-22SKV-ND, 22SKV-ND

RAS-18SKVR-A, 18SKV-A

RAS-22SKVR-A, 22SKV-A

6.35 mm 12.7 mm one each

Z Shield pipe (for extension drain hose) (polyethylene foam, 6 mm thick) 1

Attachment bolt arrangement of outdoor unit

• Secure the outdoor unit with the attachment bolts and nuts if the unit is likely to be exposed to a strong wind.

• Use Ø8 mm or Ø10 mm anchor bolts and nuts.

If it is necessary to drain the defrost water, attach drain nipple to the base plate of the outdoor unit before installing it.

28 mm

108 mm

Dia.

25mm

86 mm

125 mm

Air inlet

102 mm

Air outlet

Drain outlet

600 mm

90 mm

10-2-2. Accessory and Installation Parts

Part No.

Part name (Q’ty) Part No.

Part name (Q’ty) Part No.

Part name (Q’ty)

1

2

3

4

5

9

TOSHIBA New AIQ filter × 2

(P/N : RB-A620DE)

Drain nipple

∗

× 1

Installation plate × 1

Wireless remote controller × 1

Battery × 2

Remote controller holder × 1

6

TOSHIBA New AIQ filter × 2

(P/N : RB-A620DE)

10

Water-proof rubber cap × 2

11

Screw Ø4 × 10 l × 2

Plasma pure filter × 1

(SKVR series)

7

Mounting screw Ø4 × 25 l × 6

<Others>

Name

Owner's manual

Installation manual

Product specification

Accessory sheet

8

Remote controller holder mounting screw

Ø3.1 × 16 l

× 2

Parts marked with asterisk (*) are packaged with the outdoor unit.

– 57 –

FILE NO. SVM-10050

10-2-3. Installation/Servicing Tools

Changes in the product and components

In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3-way valve) has been changed.

(1/2 UNF 20 threads per inch)

• In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)

New tools for R410A

New tools for R410A Applicable to R22 model

Gauge manifold

Charge hose


Torque wrench

(nominal diam. 1/2, 5/8)

×

×

¡

×

Changes

As pressure is high, it is impossible to measure by means of conventional gauge. In order to prevent any other refrigerant from being charged, each port diameter has been changed.

In order to increase pressure resisting strength, hose materials and port size have been changed (to 1/2 UNF 20 threads per inch).

When purchasing a charge hose, be sure to confirm the port size.

As pressure is high and gasification speed is fast, it is difficult to read the indicated value by means of charging cylinder, as air bubbles occur.

The size of opposite sides of flare nuts have been increased.

Incidentally, a common wrench is used for nominal diameters 1/4 and 3/8.

Flare tool (clutch type)

¡

By increasing the clamp bar’s receiving hole, strength of spring in the tool has been improved.

Gauge for projection adjustment

— —

Used when flare is made by using conventional flare tool.

Vacuum pump adapter

¡

Connected to conventional vacuum pump. It is necessary to use an adapter to prevent vacuum pump oil from flowing back to the charge hose. The charge hose connecting part has two ports-one for conventional refrigerant (7/16 UNF 20 threads per inch) and one for R410A. If the vacuum pump oil (mineral) mixes with R410A a sludge may occur and damage the equipment.

Gas leakage detector

×

Exclusive for HFC refrigerant.

• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the

U. S’s ARI specified rose color (ARI color code: PMS 507).

• Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to the charge hose’s port size.

– 58 –


10-3-1. Installation Place

• A place which provides enough spaces around the indoor unit as shown in the diagram.

• A place where there are no obstacle near the air inlet and outlet.

• A place which allows easy installation of the piping to the outdoor unit.

• A place which allows the front panel to be opened.

• The indoor unit shall be installed so that the top of the indoor unit is positioned at least 2 m in height.

• Also, avoid putting anything on the top of the indoor unit.

CAUTION

• Direct sunlight on the indoor unit wireless receiver should be avoided.

• The microprocessor in the indoor unit should not be too close to r-f sources.

(For details, see the owner’s manual.)

FILE NO. SVM-10050

10-3-2. Drilling a Hole and Mounting

Installation Plate

Drilling a hole

When install the refrigerant pipes from the rear.

23mm

35 120 180 240

Pipe hole

Dia .65mm

The center of the pipe hole is the above arrow.

Fig. 10-3-2

1. After determining the pipe hole position on the installation plate (

ð

) drill the pipe hole (Ø65 mm) at a slight downward slant to the outdoor side.

NOTE :

• When drilling into a wall that contains a metal lath, wire lath or metal plate, be sure to use a pipe hole brim ring sold separately.


• Should be placed where there are no obstacles, such as curtains, that may block the signal.

• Do not install the remote controller in a place exposed to direct sunlight or close to a heating source, such as a stove.

• Keep the remote controller at least 1 m away from the nearest TV set or stereo equipment.

(This is necessary to prevent image disturbances or noise interference.)

• The location of the remote controller should be determined as shown below.

Mounting the installation plate

(Side view) (Top view)

Indoor unit

45˚

45˚

75˚

Reception range

Reception range

Remote controller Remote controller

170

85

To unit out line

240mm

Anchor bolt holes

Hook

To unit out line

35mm

To unit out line

120mm

0 23

35

120

180

240

To unit out line

240mm

170

132

23 di a.

6

5m m

Pipe hole

Indoor unit

Hook

Thread

7

Hook

Mounting

Screw

Weight

1

Pipe hole (dia. 65mm)

Installation plate

Fig. 10-3-3

Fig. 10-3-1

– 59 –

When the installation plate is directly mounted on the wall

1. Securely fit the installation plate onto the wall by screws with the upper and lower catches, that hold the indoor unit, facing out.

2. To mount the installation plate on a concrete wall use anchor bolts.

Drill the anchor bolt holes previous page.

3. Install the installation plate horizontally and level.

CAUTION

When installing the installation plate with mounting screw, do not use the anchor bolt hole.

Otherwise the unit may fall down and result in personal injury and property damage.

Fig. 10-3-4

Anchor bolt

Projection

15 mm or less

10-3-3. Electrical Work

FILE NO. SVM-10050

1. The supply voltage must be the same as the rated voltage of the air conditioner.

2. Prepare a power source for the exclusive use of the air conditioner.

NOTE :

• Wire type :

More than 1.5 mm² H07RN-F or 60245IEC66.

CAUTION

This appliance can be connected to a main circuit breaker in either of the following two ways.

1. Connection to fixed wiring:

A switch or circuit breaker which disconnects all poles and has a contact separation of at least 3 mm must be incorporated in the fixed wiring. An approved circuit breaker or switch must be used.

2. Connection with power supply plug:

Attach power supply plug with power cord and plug it into wall outlet. An approved power supply cord and plug must be used.

NOTE :

• Perform wiring work being sure the wire length is long enough.

5 mm dia. hole

Clip anchor

(local parts)

7 Mounting screw

Ø4 × 25 l

Fig. 10-3-5

CAUTION

Failure to securely install the unit may result in personal injury and/or property damage if the unit falls.

• In case of block, brick, concrete or similar type walls, drill 5 mm dia. holes in the wall.

• Insert clip anchors for the

mounting screws.

NOTE :

• Install the installation plate using mounting screws between 4 to 6, being sure to secure all 4 corners.

10-3-4. Wiring Connection

How to connect the connecting cable

Wiring the connecting cable can be carried out without removing the front panel.

1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.

2. Remove the terminal cover and cord clamp.

3. Insert the connecting cable (or as according to local regulations/codes) into the pipe hole on the wall.

4. Pull the connecting cable through the cable slot on the rear panel so that it protrudes about

15 cm out of the front.

5. Insert the connecting cable fully into the terminal block and secure it tightly with screws.

6. Tightening torque: 1.2 N•m (0.12 kgf•m)

7. Secure the connecting cable with the cord clamp.

8. Attach the terminal cover, rear plate bushing and air inlet grille on the indoor unit.

– 60 –

CAUTION

• Be sure to refer to the wiring system diagram labeled inside the front panel.

• Check local electrical regulations for any specific wiring instructions or limitations.

Terminal cover

Cord clamp

Screw

Terminal block

1

2

3

Screw

20mm

110mm

Connecting cable

About 15 cm

10mm

80mm

Stripping length of the connecting cable

Earth line

Connecting cable

Earth line

Fig. 10-3-6

FILE NO. SVM-10050

10-3-5. Piping and Drain Hose Installation

Piping and drain hose forming

• Since condensation results in machine trouble, make sure to insulate both the connecting pipes separately.

(Use polyethylene foam as insulating material.)

Rear right

Rear left

Bottom left

Left

Bottom right

Right

Fig. 10-3-8

1. Die-cutting front panel slit

Cut out the slit on the left or right side of the front panel for the left or right connection and the slit on the bottom left or right side of the front panel for the bottom left or right connection with a pair of nippers.

2. Changing drain hose

For left connection, left-bottom connection and rear-left connection’s piping, it is necessary to relocate the drain hose and drain cap.

10mm

110mm

Earth line

How to remove the drain cap

Clip drain cap with needle-nose pliers, and pull out.

10mm

50mm

Fig. 10-3-7

NOTE :

WIRE TYPE :

More than 1.5mm². (H07 RN-F or 60245 IEC 66).

Fig. 10-3-9

How to remove the drain hose

The drain hose is secured in place by a screw.

Remove the screw securing the drain hose, then pull out the drain hose.

Heat insulator

Drain hose

Fig. 10-3-10

– 61 –

How to attach the drain cap

1. Insert hexagonal wrench (4 mm).

FILE NO. SVM-10050

In case of bottom right or bottom left piping

• After making slits on the front panel with a knife or similar tool, cut them out with a pair of nippers or an equivalent tool.

4 mm

Fig. 10-3-11

2. Firmly insert drain cap.

No gap

Insert a hexagon wrench (Ø4mm)

Do not apply lubricating oil

(refrigerant machine oil) when inserting the drain cap.

If applied, deterioration and drain leakage of the drain plug may occur.

Fig. 10-3-12

Slit

Fig.

10-3-14

Left-hand connection with piping

Bend the connecting pipes so that they are positioned within 43 mm above the wall surface.

If the connecting pipes are positioned more than

43 mm above the wall surface, the indoor unit may be unstable.

When bending the connecting pipe, make sure to use a spring bender to avoid crushing the pipe.

Refer to the table below for the bending radius of each connection pipe.

Outer diameter

6.35 mm

12.7 mm, 15.88 mm

Bending radius

30 mm

50 mm

To connect the pipe after installation of the unit (figure)

520 mm

420 mm

(To the forefront of flare)

Gas side

Liquid side

How to attach the drain hose

Always use the original screw that secured the drain hose to the unit. If using a different screw may cause water to leak.

Insert the drain hose firmly until the connector contacts with the insulation, then secure it in place using the original screw.

CAUTION

Securely insert the drain hose and drain cap; otherwise, water may leak.

R30 or less (Ø 6.35), R50 or less (Ø12.7, Ø15.88)

Use polishing (polyethylene core or the like for bending pipe).

Outward form of indoor unit

In case of right or left piping

• After making slits on the front panel with a knife or similar tool, cut them out with a pair of nippers or an equivalent tool.

Slit

Fig. 10-3-13

– 62 –

Use a screwdriver handle, etc.

Fig. 10-3-15

NOTE :

If the pipe is incorrectly bent, the indoor unit may be unstable on the wall.

After passing the connecting pipe through the pipe hole, connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them.

CAUTION

• Bind the auxiliary pipes (two) and connecting cable with facing tape tightly.

In case of leftward piping and rear-leftward piping, bind the auxiliary pipes (two) only with facing tape.

Indoor unit

Auxiliary pipes

Connecting cable

Installation plate

Fig. 10-3-16

• Carefully arrange the pipes so that none of the pipes stick out of the rear plate of the indoor unit.

• Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wound on the connecting pipe to avoid double-taping at the joint, moreover, seal the joint with the vinyl tape, etc.

• Since condensation can result in machine performance trouble, be sure to insulate both connecting pipes. (Use polyethylene foam as insulating material.)

• When bending a pipe, be careful not to crush it.

10-3-6. Indoor Unit Installation

1. Pass the pipe through the hole in the wall, and hook the indoor unit on the installation plate at the upper hooks.

2. Swing the indoor unit to right and left to confirm that it is firmly hooked on the installation plate.

3. While pushing the indoor unit onto the wall, hook it at the lower part on the installation plate.

Pull the indoor unit toward you to confirm that it is firmly hooked on the installation plate.

Hook here

1 Installation plate

FILE NO. SVM-10050

10-3-7. Drainage

1. Run the drain hose at a downward sloped angle.

NOTE :

• Hole should be made at a slight downward slant

Do not rise the drain hose.

50 mm or more

Do not form the drain hose into the waved shape.

Do not put the drain hose end into water.

Do not put the drain hose end in the drainage ditch.

Fig. 10-3-19

2. Put water in the drain pan and make sure that the water is being drained outside.

3. When connecting extension drain hose, insulate the connection part of extension drain hose with shield pipe.

Shield pipe

Drain hose Inside the room

Extension drain hose

Fig. 10-3-20

Hook

Push (unhook)

Fig. 10-3-17

• For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing the bottom up at the specified places.

Push Push

Fig. 10-3-18

Information

The lower part of indoor unit may fl oat, due to the condition of piping and you cannot fi x it to the installation plate. In that case, use the

%

screws provided to fi x the unit and the installation plate.

%

Screw

%

Screw

– 63 –

CAUTION

Install the drain pipe for proper drainage.

Improper drainage can result in water dripping inside the room.

This air conditioner has been designed to drain water collected from condensation which forms on the back of the indoor unit, to the drain pan.

Therefore, do not locate the power cord and other parts at a heigh place than the drain guide.

Wall

Drain guide

Space for pipes

Fig.

10-3-21


10-4-1. Installation Place

• A place which provides enough space around the outdoor unit as shown in the diagram.

• A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration.

• A place where the operation noise and discharged air do not disturb neighbors.

• A place which is not exposed to a strong wind.

• A place free of combustible gases.

• A place which does not block a passageway.

• When the outdoor unit is to be installed in an elevated position, be sure to secure its feet.

• This air conditioner accepts a connection piping length of up to 20 m.

• There is no need to add refrigerant as long as the length of the connection piping is 15 m or less.

• You will need to add 20 g of refrigerant per meter of added connection piping for installations requiring connection piping to be between 16 m to 20 m.

• An allowable height level is up to 10 m.

• A place where the drain water does not cause any problems.

FILE NO. SVM-10050

Precautions for adding refrigerant

• Use a scale having a precision with at least 10 g per index line when adding the refrigerant.

Do not use a bathroom scale or similar instrument.

• Use liquid refrigerant when refilling the refrigerant.

Since the refrigerant is in liquid form, it can fill quickly.

Therefore, perform the filling operation carefully and insert the refrigerant gradually.

CAUTION

1. Install the outdoor unit without anything blocking the discharging air.

2. When the outdoor unit is installed in a place always exposed to strong winds like on the coast or on a high story of a building, secure the normal fan operation using a duct or a wind shield.

3. Especially in windy areas, install the unit to prevent the admission of wind.

4. Installation in the following places may result in trouble.

Do not install the unit in such places.

• A place full of machine oil.

• A saline-place such as the coast.

• A place full of sulfide gas.

• A place where high-frequency waves are likely to be generated, such as from audio equipment, welders, and medical equipment.

Strong

wind

Fig. 10-4-1

– 64 –

10-4-2. Draining the Water

• Holes are provided on the base plate of the outdoor unit to ensure that the defrost water produced during heating operations is drained off efficiently.

If a centralized drain is required when installing the unit on a balcony or wall, follow the steps below to drain off the water.

1. Proceed with water-proofing by installing the water-proof rubber caps

in the 2 elongated holes on the base plate of the outdoor unit. [How to install the water-proof rubber caps]

1) Place four fingers into each cap, and insert the caps into the water drain holes by pushing them into place from the underside of the base plate.

2) Press down on the outer circumferences of the caps to ensure that they have been inserted tightly.

(Water leaks may result if the caps have not been inserted properly, if their outer circumferences lift up or the caps catch on or wedge against something.)

Base plate

10 Water-proof rubber caps

(supplied with the outdoor unit)

Base plate

Fig. 10-4-2

2. Install the drain nipple

and a commercially available drain hose (with 16 mm inside diameter), and drain off the water.

(For the position where the drain nipple

is installed, refer to the installation diagram of the indoor and outdoor units.)

• Check that the outdoor unit is horizontal, and route the drain hose at a downward sloped angle while ensuring that it is connected tautly.

Commercially available drain hose

Do not use ordinary garden hose, but one can flatten and prevent water from draining.

Fig. 10-4-3

FILE NO. SVM-10050

10-4-3. Refrigerant Piping Connection

Flaring

1. Cut the pipe with a pipe cutter.

90˚

Obliquity Roughness Warp

Fig. 10-4-4

2. Insert a flare nut into the pipe, and flare the pipe.

• Projection margin in flaring : A (Unit : mm)

Rigid (Clutch type)

Outer dia. of copper pipe

6.35

9.52

12.7

R410A tool used

0 to 0.5

0 to 0.5

0 to 0.5

Conventional tool used

1.0 to 1.5

1.0 to 1.5

1.0 to 1.5

Imperial (Wing nut type)


6.35

9.52

12.7

R410A

1.5 to 2.0

1.5 to 2.0

2.0 to 2.5

Die Pipe

Fig. 10-4-5

B

• Flaring size : B (Unit : mm)


6.35

9.52

12.7

Fig. 10-4-6

B

+0

–0.4

R410A R22

9.1

13.2

16.6

9.0

13.0

16.2

• In case of flaring for R410A with the conventional flare tool, pull it out approx. 0.5 mm more than that of R22 to adjust to the specified flare size.

The copper pipe gauge is useful for adjusting projection margin size.

A

– 65 –

Tightening Connection

Align the centers of the connecting pipes and tighten the flare nut as much as possible with your fingers.

Then tighten the nut with a wrench and torque wrench as shown in the figure.

Half union

Externally threaded side

Use a wrench to secure.

Fig. 10-4-7

Flare nut

Internally threaded side

Use a torque wrench to secure.

CAUTION

• Do not apply excessive force.

Otherwise, the nut may break.

FILE NO. SVM-10050

Use a vacuum pump

Be sure to use a vacuum pump with counter-flow prevention function so that oil inside the pump does not flow back into the air conditioner pipes when the pump stops. (If oil inside the vacuum pump enters into the air conditioner circuit which uses R410A, trouble with the refrigeration system may develop.)

1. Connect the charge hose from the manifold valve to the service port of the gas side packed valve.

2. Connect the charge hose to the port of the vacuum pump.

3. Open fully the low pressure side handle of the gauge manifold valve.

4. Operate the vacuum pump to begin evacuating.

Perform evacuating for about 15 minutes if the piping length is 20 meters (15 minutes for 20 meters) (assuming a pump capacity of 27 liters per minute).

Confirm that the compound pressure gauge reading is -101 kPa (76 cmHg).

5. Close the low pressure valve handle of gauge manifold.

6. Open fully the valve stem of the packed valves

(both sides of Gas and Liquid).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.


Ø6.35 mm

Ø12.7 mm

(Unit : N·m)

Tightening torque

14 to 18 (1.4 to 1.8 kgf•m)

50 to 62 (5.0 to 6.2 kgf•m)

• Tightening torque for connection of flare pipe

The pressure of R410A is higher than R22.

(Approx. 1.6 times.) Therefore securely tighten the flare pipes which connect the outdoor unit and the indoor unit with the specified tightening torque using a torque wrench.

If any flare pipe is incorrectly connected, it may cause not only

Flare at indoor unit side a gas leakage but also trouble in the refrigeration cycle.

Flare at outdoor unit side

Fig. 10-4-8

Compound pressure gauge

-101kPa (76cmHg)

Handle Lo

Charge hose (For R410A only)

Connecting pipe

Pressure gauge

Manifold valve

Handle Hi

(Keep full closed)

Charge hose

(For R410A only)

Vacuum pump adapter for counterfl ow prevention

(For R410A only)

Vacuum pump

Packed valve at gas side

Service port (Valve core (Setting pin))

Packed valve at liquid side

Fig. 10-4-9

10-4-4. Evacuating

After the piping has been connected to the indoor unit, perform the air purge.

AIR PURGE

Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump.

Do not use the refrigerant in the outdoor unit.

For details, see the vacuum pump manual.

CAUTION

•

KEEP IMPORTANT 5 POINTS FOR PIPING WORK

(1) Take away dust and moisture (Inside of the connecting pipes.)

(2) Tight connection (between pipes and unit)

(3) Evacuate the air in the connecting pipes using

VACUUM PUMP.

(4) Check gas leak (connected points)

(5) Be save to fully open the packed valves before operation.

– 66 –

Packed Valve handling precautions

• Open the valve stem all the way; but do not try to open it beyond the stopper.

• Securely tighten the valve stem cap with torque in the following table:

Gas side (Ø12.7 mm)

Liquid side (Ø6.35 mm)

Service port

50 to 62 N•m (5.0 to 6.2 kgf•m)

14 to 18 N•m (1.4 to 1.8 kgf•m)

14 to 18 N•m (1.4 to 1.8 kgf•m)

Hexagonal wrench is required.

4mm

Fig. 10-4-10

10-4-5. Wiring Connection

1. Remove the valve cover, the electric parts cover and the cord clamp from the outdoor unit.

2. Connect the connecting cable to the terminal as identified by the matching numbers on the terminal block of indoor and outdoor unit.

3. Insert the power cord and the connecting cable fully into the terminal block and secure it tightly with screws.

4. Insulate the unused cords (conductors) from water entering in the outdoor unit. Locate them so that they do not touch any electrical or metal parts.

5. Secure the power cord and the connecting cable with the cord clamp.

6. Attach the electric parts cover and the valve cover on the outdoor unit.

Stripping length of connecting cable

Terminal block

1 2 3 L N


L N 1 2 3

30

40

Earth line

Connecting cable

Fig. 10-4-12

30

40

Power cord

Earth line

Model

Power source

Maximum running current

Installation fuse rating

Power cord

Connection cable

RAS-18SKV-E

RAS-18SKVR-E

RAS-18SKV2-E

RAS-18SKV-A

RAS-18SKVR-A

RAS-18SKV-ND

RAS-22SKV-E

RAS-22SKVR-E

RAS-22SKV2-E

RAS-22SKV-A

RAS-22SKVR-A

RAS-22SKV-ND

220-240V, 50Hz, Single phase

220-230V, 60Hz

220-240V, 50Hz (RAS-18,22SKV-A,

18,22SKVR-A)

12.0 A 13.5 A

16 A breaker or fuse

(All types can be used.)

H07RN-F or 245IEC66 (1.5 mm²)

H07RN-F or 245IEC66 (1.0 mm²)

CAUTION

• Incorrect wiring connection may cause electrical parts to burn out.

• Be sure to comply with local regulations/codes when running the wire from outdoor unit to indoor unit.

(Size of wire and wiring method etc.)

• Every wire must be securely connected.

• If incorrect or incomplete wiring is carried out, fire or smoke may result.

• Prepare the power supply for the exclusive use of the air conditioner.

• This product can be connected to the main breaker.

Connection to fixed wiring:

A switch which disconnects all poles and has a contact separation of at least 3 mm must be incorporated in the fixed wiring when connecting to a main breaker circuit.

Connecting cable

Fig. 10-4-11

Power cord

– 67 –

10-5. Test Operation

10-5-1. Gas Leak Test

• Check the flare nut connections for gas leaks with a gas leak detector and/or soapy water.

Valve cover

Check places for the indoor unit

Electric parts cover

Check places for the outdoor unit

Fig. 10-5-1

10-5-2. Test Operation

To test the system, push and hold RESET button for

10 sec. (There will be one short beep.)


RESET button

Fig. 10-5-2

RESET

10-5-3. Auto Restart Setting

This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure.

Information

The product was shipped with Auto Restart function in the OFF position.

Turn it ON as required.

How to Set the Auto Restart

• Push and hold the RESET button for about 3 seconds. After 3 seconds, three short electric beeps will be heard to inform you that the Auto

Restart has been selected.

• To cancel the Auto Restart, follow the steps described in the section Auto Restart Function on

Owner’s Manual.

– 68 –

FILE NO. SVM-10050

10-5-4. Remote Controller A or B Selection

Setting

When two indoor units are installed in the separated rooms, it is not necessary to change the selector switches.

Remote controller A or B selection

• When two indoor units are installed in the same room or adjacent two rooms, if operating a unit,

2 units may receive the remote controller signal simultaneously and operate. In this case, the operation can be preserved by setting either one indoor unit or remote controller to B setting.

(Both are set to A setting in factory shipment.)

• The remote controller signal is not received when the settings of indoor unit and remote controller are different.

• There is no relation between A setting/B setting and A room/B room when connecting the piping and cables.

Remote controller A- B selection

To separate using of remote controller for each indoor unit in case of 2 air conditioner are installed nearly.

Remote controller B Setup.

1. Push RESET button on the indoor unit to turn the air conditioner ON.

2. Point the remote controller at the indoor unit.

3. Push and hold CHK button on the remote controller by the tip of the pencil.

“00” will be shown on the display.

4. Push MODE during pushing CHK, “B” will show on the display and “00” will disappear and the air conditioner will turn OFF.

The remote controller B is memorized.

Note :

1. Repeat above step to reset Remote Controller to be A.

2. Remote controller A have not “A” display.

3. Detault setting of remote controller from factory is A.

“B” Display

“00” Display

PRESET

ONE-TOUCH

FAN

MODE

QUIET PURE

COMFORT

SELECT

SWING FIX Hi-POWER ECO

TIMER

SLEEP

ON OFF

CLR

SET

Fig.

10-5-3


11. HOW TO DIAGNOSE THE TROUBLE

The pulse motor circuits are mounted to both indoor and outdoor units.

Therefore, diagnose troubles according to the trouble diagnosis procedure as described below.

(Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.)

No.

1

2

3

4

5

6

9

10

7

8

Table 11-1

First Confirmation

Troubleshooting Procedure

Primary Judgment

Judgment by Flashing LED of Indoor Unit

Self-Diagnosis by Remote Controller (Check Code)

Judgment of Trouble by Every Symptom

Check Code 18 and 1E

Troubleshooting

How to Diagnose Trouble in Outdoor Unit

How to Check Simply the Main Parts

How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

CAUTION: HIGH VOLTAGEN

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts on the

P.C. board by hand.

The new inverter (3DV inverter) will be incorporated starting with this unit.

(3DV: 3-shunt Discrete Vector control)

Compressor

IGBT × 6

Shared potential

Fan motor

Driver Amplifier

FET × 6

MCU

Driver

Amplifier

Fig. 11-1

– 69 –

FILE NO. SVM-10050

CAUTION

A high voltage (equivalent to the supply voltage) is also energized to ground through the sensors, PMV and other low-voltage circuits.

The sensor leads and other wires are covered with insulated tubes for protection.

Nevertheless, care must be taken to ensure that these wires are not pinched.

Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power. At times such as when the circuit board is to be replaced, place the circuit board assembly in a vertical position.

Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner’s outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter’s main circuit may cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in damage to the components.

Fig. 11-2

Do NOT lay the circuit board assembly flat.

NOTE :

A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time.

After turning off the power source, if touching the charging section before discharging, an electrical shock may be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.

< Discharging method >

1. Remove the inverter cover (plating) by opening 4 mounting claws.

2. As shown below, connect the discharge resistance (approx. 100

Ω

, 40W) or plug of the soldering iron to voltage between + – terminals of the C14 (“CAUTION HIGH VOLTAGE” is indicated.) electrolytic capacitor

(18SAV-E : 500µF /400V, 22SAV-E : 760µF /400V) on P.C. board, and then perform discharging.

Discharging position

(Discharging period

10 seconds or more)

Plug of soldering iron

Inverter cover

P. C. board

(Soldered surface)

– 70 –

Fig. 11-3

FILE NO. SVM-10050

11-1. First Confirmation

11-1-1. Confirmation of Power Supply

Confirm that the power breaker operates (ON) normally.

11-1-2. Confirmation of Power Voltage

Confirm that power voltage is AC 220–230–240 ± 10%.

If power voltage is not in this range, the unit may not operate normally.

11-1-3. Operation Which is not a Trouble (Program Operation)

For controlling the air conditioner, the program operations are built in the microcomputer as described in the following table.

If a claim is made for running operation, check whether or not it meets to the contents in the following table.

When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and maintaining of air conditioner.

No.

1

Operation of air conditioner

When power breaker is turned “ON”, the operation indicator (Green) of the indoor unit flashes.

Table 11-1-1

Description

The OPERATION lamp of the indoor unit flashes when power source is turned on. If [ ] button is operated once, flashing stops. (Flashes also in power failure)

2 Compressor may not operate even if the room temperature is within range of compressor-ON.

The compressor does not operate while compressor restart delay timer (3-minutes timer) operates.

The same phenomenon is found after power source has been turned on because 3-minutes timer operates.

3 In Dry and ECO mode, FAN (air flow) display does not change even though FAN

(air flow select) button is operated.

The air flow indication is fixed to [AUTO].

4 Increasing of compressor motor speed stops approx. 30 seconds after operation started, and then compressor motor speed increases again approx. 30 seconds after.

For smooth operation of the compressor, the compressor motor speed is restricted to Max. 41 rps for 2 minutes, and

Max.91 rps for 2 minutes to 3 minutes, respectively after the operation has started.

5 In AUTO mode, the operation mode is changed.

After selecting Cool or Heat mode, select an operation mode again if the compressor keeps stop status for 15 minutes.

6 In HEAT mode, the compressor motor speed does not increase up to the maximum speed or decreases before the temperature arrives at the set temperature.

The compressor motor speed may decrease by hightemp.

release control (Release protective operation by temp.-up of the indoor heat exchanger) or current release control.

– 71 –

FILE NO. SVM-10050

11-2. Primary Judgment

To diagnose the troubles, use the following methods.

1) Judgment by flashing LED of indoor unit

2) Self-diagnosis by service check remote controller

3) Judgment of trouble by every symptom

Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.

11-3. Judgment by Flashing LED of Indoor Unit

While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section.

Table 11-3-1

Item

Check code

Block display Description for self-diagnosis

Indoor indication lamp flashes.

A

OPERATION (Green)

Flashing display (1 Hz)

•

When turn ON power supply.

•

Power supply ON after failure or OFF.

•

This flashing display is not air conditioner failure.

B

OPERATION (Green)


Protective circuit operation for indoor P.C. board

Which lamp does flash?

C

OPERATION (Green)

TIMER (Yellow)


Protective circuit operation for connecting cable and serial signal system

D

E

OPERATION (Green)

FILTER (Orange)


Protective circuit operation for outdoor P.C. board

OPERATION (Green)

TIMER (Yellow)

FILTER (Orange)


Protective circuit operation for others

(including compressor)

NOTES :

1. Some check code will flash display of the indoor unit, when the air conditioner operates with some limitation.

2. Some check code will flash display of the indoor unit and stop operation of the air conditioner.

3. When item B and C or item B and apart of item E occur concurrently, priority is given to the block of item B.

4. The check codes can be confirmed on the remote controller for servicing.

– 72 –


11-4. Self-Diagnosis by Remote Controller (Check Code)

1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.

2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condition and indicates the information of the self-diagnosis on the display of the remote controller with the check codes.

If a fault is detected, all lamps on the indoor unit will flash at 5 Hz and it will beep for 10 seconds

(Beep, Beep, Beep ... ). The timer lamp usually flashes (5 Hz) during self-diagnosis.

11-4-1. How to Use Remote Controller in Service Mode

TOSHIBA

1

Push [CHECK] button with a tip of pencil to set the remote controller to the service mode.

• “ ” is indicated on the display of the remote controller.

2

Push [ON ] or [OFF ] button

If there is no fault with a code, the indoor unit will beep once (Beep) and the display of the remote controller will change as follows :

PRESET

TEMP

ONE-TOUCH

TEMP

FAN

MODE

• • •

QUIET PURE

COMFORT

SLEEP


TIMER CLR

ON OFF

SLEEP

CHK FILTER CLOCK

SET

Alphanumeric characters are used for the check codes.

is 5.

is A.

is C.

is 6.

is B.

is D.

• The TIMER indicator of the indoor unit flashes continuously.

(5 times per 1 sec.)

• Check the unit with all 52 check codes ( to )

as shown in Table 11-4-1.

• Push [ON ] or [OFF ] button to change the check code

backward.

If there is a fault, the indoor unit will beep for 10 seconds

(Beep, Beep, Beep ... ).

Note the check code on the display of the remote controller.

• 2-digits alphanumeric will be indicated on the display.

• All indicators on the indoor unit will flash.

(5 times per 1 sec.)

3

Push [CLR] button.

After service finish for clear service code in memory.

• “7F” is indicated on the display of the remote controller.

4

Push [ ] button to release the service mode.

• The display of the remote controller returns to as it was

before service mode was engaged.

Fig. 11-4-1

– 73 –

FILE NO. SVM-10050

11-4-2 Caution at Servicing

1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to

normal function.

2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air

conditioner to normal operation. However, the check codes are not deleted from memory of the microcomputer.

3. After servicing finished, press [CLR] button of remote controller under service mode status to send code "7F" to the

indoor unit. The check code stored in memory is cleared.

Block distinction

Check code

Block

Indoor P.C.

board.

Table 11-4-1

Check code

Operation of diagnosis function

Cause of operation

Air conditioner status

TA sensor ; The room temperature sensor is short-Circuit or disconnection.

Operation continues.

Display flashing error

Action and Judgment

Flashes when 1. Check the sensor TA and connection.

error is detected. 2. In case of the sensor and its

connection is normal, check the

P.C. board.

TC sensor ; The heat exchanger temperature sensor of the indoor unit is out of place, disconnection, short-circuit or migration.

Operation continues.

Flashes when 1. Check the sensor TC and connection.

error is detected. 2. In case of the sensor and its


P.C. board.

Fan motor of the indoor unit is failure, lock-rotor, shortcircuit, disconnection, etc.

Or its circuit on P.C. board has problem.

All OFF Flashes when 1. Check the fan motor and connection.

error is detected. 2. In case of the motor and its


P.C. board.

Other trouble on the indoor

P.C. board.

Depend on cause of failure.

Depend on cause of failure.

Replace P.C. board.

– 74 –

FILE NO. SVM-10050

Block distinction

Check code

Block

Check code

Operation of diagnosis function

Cause of operation

Air conditioner status

Display flashing error

Action and Judgment

Note :

60

Serial signal and connecting cable.

1) Defective wiring of the

connecting cable or

miss-wiring.

2) Operation signal has not

send from the indoor unit

when operation start.

3) Outdoor unit has not

send return signal to the

Indoor unit Flashes when operates continue.

error is detected.

Flashing stop

Outdoor unit and outdoor unit stop.

start to operate when the return signal from the outdoor unit is normal.

1) to 3) The outdoor unit never

operate.

Check connecting cable and correct if defective wiring.

Check 25A fuse of inverter P.C. board.

Check 3.15A fuse of inverter

P.C. board.

Check operation signal of the indoor

indoor unit when operation

started.

unit by using diode. Measure voltage at terminal block of the indoor unit

4) Return signal from the between No.2 and No.3 (or L2 and S)

outdoor unit is stop during If signal is varied 15-60V continuously,

operation.

replace inverter P.C. board.

Some protector

(hardware, if exist) of the outdoor unit open circuit of signal.

Signal circuit of indoor

P.C. board or outdoor

P.C. board is failure in some period.

If signal is not varied, replace indoor

P.C. board.

4) The outdoor unit abnormal stop at

some time.

If the other check codes are found concurrently, check them together.

Check protector (hardware) such as Hi-Pressure switch,

Thermal-Relay, etc.

Operation signal of the indoor unit shall be measured in the sending period as picture below.

VDC

Sending signal of the indoor unit when have not return signal from the outdoor unit.

***

Check refrigerant amount or any possibility case which may caused high temperature or high pressure.

Check operation signal of the indoor unit by using diode. Measure voltage at terminal block of the indoor unit between No.2 and No.3 (or L2 and S)

If signal is varied 15-60V continuously, replace inverter P.C. board.

If signal is not varied, replace indoor

P.C. board.

3 minutes Delay, start counting from power supply ON or remote

OFF.

*

3 minutes stop

Voltage variation stop or have not voltage output.

**

15

0

3 4 7 8

Time (Min)

* Signal send only 1 minute and stop. Because of return signal from outdoor unit has not received.

** Signal resend again after 3 minutes stop. And the signal will send continuously.

*** 1 minute after resending, the indoor unit display flashes error.

– 75 –

Block distinction

Check code

Block

Outdoor

P.C. board

Not displayed

Outdoor

P.C. board

Others

(including compressor)

FILE NO. SVM-10050

Check code

Operation of diagnosis function

Cause of operation

Inverter over-current protective circuit operates.

(Short time)

Position-detect circuit error or short-circuit between windings of compressor

Current-detect circuit error

Air conditioner status

All off

Remarks

Displayed when error is detected.

All off

All off

All off




Judgment and action

Even if trying operation again, all operations stop immediately. :

Replace P.C. board.

1. Even if connecting lead wire of compressor is removed, positiondetect circuit error occurred. :

Replace P.C. board.

2. Measure resistance between wires of compressor, and perform short-circuit. :

Replace compressor.

Even if trying operation again, all operations stop immediately. :

Replace P.C. board.

1. Check sensors (TE, TS).

2. Check P.C. board.

Being out of place, disconnection or shortcircuit of the outdoor heat exchanger sensor

(TE) or suction temp.

sensor (Ts)

Disconnection or shortcircuit of discharge temp. sensor

Outdoor fan drive system error

Outdoor heat exchanger temp. sensor error

All off

All off

Operation continues



——

1. Check discharge temp. sensor

(TD).

2. Check P.C. board

Position-detect error, over-current protective operation of outdoor fan drive system, fan lock, etc. :

Replace P.C. board or fan motor.

1. Check outdoor temp. sensor (TO).

2. Check P.C. board.

Compressor drive output error, Compressor error

(lock, missing, etc.)

Return serial signal has been sent when operation started, but it is not sent from halfway.

1) Compressor thermo.

operation

Gas shortage

Gas leak

2) Instantaneous power failure

Compressor does not rotate.(Current protective circuit does not operate when a specified time passed after compressor had been activated.)

Discharge temp. exceeded

117°C

All off

Operation continues

All off


Flashes when trouble is detected on return serial signal, and normal status when signal is reset.


When 20 seconds passed after start-up, position-detect circuit error occurred. : Replace compressor.

Trouble on PMV

1. Repeat Start and Stop with interval of approx. 10 to 40 minutes. (Code is not displayed during operation.)

Supply gas.

(Check also gas leak).

2. Unit operates normally during check.

If return serial signal does not stop between indoor terminal block 2 and 3, replace inverter

P.C. board.

If signal stops between indoor terminal block 2 and 3, replace indoor P.C. board.

1. Trouble on compressor

2. Trouble on wiring of compressor

(Missed phase)

All off Displayed when error is detected.

Break down of compressor

4-way valve inverse error

(TC sensor value lowered during heating operation.)

All off

Operation continues


——

1. Check dischage temp. sensor

(TD).

2. Gas leakage

3. Trouble on PMV

1. Check power voltage.

(220–230–240 V +10%)

2. Overload operation of refrigeration cycle

Check installation condition

(Short-circuit of outdoor diffuser).

1. Check 4-way valve operation.

– 76 –

FILE NO. SVM-10050

11-5. Judgement of Trouble by Every Symptom

11-5-1. Indoor unit (Including remote controller)

(1) Indoor unit is not operated.

Operation

Check Item

Considerable principle cause

Turn off power supply once, and

5 second later, turn it on again.

NO

Is OPERATION indicator flashing?

YES

Is it possible to turn on

A/C by pushing

[ ] button on remote controller?

YES

NO

Does transmission mark on remote controller flash normally,and is its signal transmitted properly?

YES

NO

Unit operates normally.

Measures

Item by symptoms

Remote controller is defective.

Refer to (5) “Troubleshooting for remote controller”.

Point remote to digital camera. Can see infrared ray at sending LED on camera monitor when push [ ] button?

YES

NO

Replace remote control

Is fuse (F01) of indoor control board blown?

NO

YES

Is voltage

(DC5V, 12V and 15V) indicated on rear of indoor control board nor mal?

NO

YES

Does connection between PC Board and reciver PCB are connect properly?

NO

Reconnect housing

YES

YES

Does fan motor connector between CN10 1 –

3 short-circuit?

YES

NO

Microcomputer is defective.

Replace main

P.C. board

Replace fan motor.

(2) Operation is not turned on though Indoor P.C. board is replaced

<Confirmation procedure>

Turn on power supply.

Does OPERATION indicator flash?

NO

Is wired correctly to white and black lead wires of terminal block?

YES

NO

Correct wiring

To item of

“Indoor unit is not operated”.

– 77 –

FILE NO. SVM-10050

(3) Only the indoor motor fan does not operate

<Primary check>

1. Is it possible to detect the power supply voltage (AC220–240V) between

1

and on the terminal block?

2. Does the indoor fan motor operate in cooling operation?

(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned on, to prevent a cold air from blowing in.)

Turn off power supply once, and turn it on again.

Does fan motor continue to operate?

YES

NO

Is it possible to detect

DC 1V or more between

5

+ and

3

– of motor connector (CN31).

YES

NO

Peplace indoor fan motor.

Does check operation LED flash?

NO

YES

Does check connecting cable or power supply cord complely?

YES

NO

Reconnecting the in terconnection cable and terminal block

Does check

5V at display unit?

YES

NO

Does check 5V at main P.C board?

YES

NO

Replace display unit

Start to operate indoor unit in cooling operation at airflow level “LOW”.

Does indoor fan operate?

YES

Change airflow level to “HIGH”.

NO


DC 294–325V between

1

+ and

3


YES

NO

(Motor connection condition)

Is it possible to detect DC 15V between

4

+ and

3


YES

NO

Turn off indoor unit and remove connector from motor.

Then push [ ] button on remote controller to stop flashing lamp on indoor unit.


DC 15V between

4

+ and

3


YES

NO

Start to operate the indoor unit in except heating operation.

At this time, is it possible to detect DC 1V or more between

5

+ and

3

– of motor connector (CN31)?

NO

YES

Turn off indoor unit and remove connector from motor.

Then start to operate indoor unit with remote controller.

Start to operate the indoor unit in except heating operation.


5

+ and

3

– of motor connector (CN31)?

(Check this condition within 15 seconds after starting unit.)

YES

NO

A

B

Peplace main

P.C. board.

– 78 –

FILE NO. SVM-10050

A

Is it possible to change airflow level to “HIGH”?

NO

YES

B

Does check display on remote show high?

YES

NO

Change the new PC board. Does fan speed change?

YES

NO

Replace remote

Replace motor

Fan motor operates normally.

Is it possible to rotate cross-flow fan by hand properly?

YES

Turn off indoor unit and rotate cross-flow fan by hand when the unit is on standby.


5

+ and

3

– of motor connector

(CN31).

YES

NO

NO

Does check cross-flow fan bearing normal condition?

YES

NO

Replace bearing of cross-flow fan.

Replace indoor fan motor.

Peplace main

P.C. board.

– 79 –

FILE NO. SVM-10050

(4) Indoor fan motor automatically starts to rotate by turning on power supply

<Cause>

The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.

If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning on power supply.

<Inspection procedure>

1. Turn on breaker.

2. After Fan motor operate, off A/C by remote controller.

3. Turn off breaker for a while, then turn it ON.

3.1. If fan motor not operate, it means an unit in Auto-restart operation. (see more detail in P. 50-51)

3.2. If Fan motor still operate, follow the below.

3.2.1. Remove the grille.

3.2.2. Remove the cover terminal by release one screw.

3.2.3. Check DC voltage with CN31 connector while the fan motor is rotating.

NOTE :

• Do not disconnect the connector while the fan motor is rotating.

• Use a thin test rod.

Indoor fan starts rotating when power supply is turned on.

(Check output DC voltage of fan motor on P.C. board.)

Measure voltage between 3 (GND : BLACK) and 5 (V line : YELLOW) of motor connector (CN31) while indoor fan motor is rotating.

CN31

P.C. board

Yellow

Black

6 (Blue)

5 (Yellow)

4 (White)

3 (Black)

2 –

1 (Red)

DC 1.0V or more Under DC 1.0V

DC

P.C. board is defective.

Motor is defective.

Replace P.C. board.

Replace motor.

– 80 –

FILE NO. SVM-10050

(5) Troubleshooting for remote controller

<Primary check>

Check that A or B selected on the main unit is matched with A or B selected on the remote controller.

Is receiver on indoor unit exposed to direct sunlight?

YES

NO

Is there any fluorescent light nearly?

YES

NO

Push the [ ] button.

The unit does not beep at all.

Operation lamp on indoor unit is not indicated.

Is transmission mark indicated?

YES

NO

Reset by take off battery the push

[ ] button till LCD indication disclear put battery again.

NO

Does indoor unit operate when moving remote controller near receiver or indoor unit?

YES

Batteries are exhausted.

Avoid direct sunlight.

Push the

[ ] button

NO

Does A/C operate?

by push RESET button of indoor unit.

YES

Point remote to digital camera can see infrared at sending

LED on carmera monitor when push [ ] button?

YES

Replace main

P.C. Board

NO

NO

Is transmission mark indicated?

YES

Does indoor unit beep and operate?

YES

NO

Reciver P.C. board is defective.

Remote controller is defective.

Keep indoor unit away from fluorescent light.

Replace reciver

P.C. board.

Replace batteries.

Normal operation

Replace remote controller.

– 81 –

FILE NO. SVM-10050

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

(1) Outdoor unit does not operate

1) Is the voltage between and 3 of the indoor terminal block varied?

Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the following diagram.

NOTE:

• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.

• Be sure to prepare a diode for judgment.

Terminal block at indoor side

Red

3

S5277G

White

2

1

Terminal block

Tester

S5277G or equivalent

(Diode with rated voltage of 400V or more is acceptable.)

Normal time : Voltage swings between DC15 and 60V. ................... Inverter Assembly check (11-8-1.)

Abnormal time : Voltage does not vary.

(2) Outdoor unit stops in a little while after operation started

<Check procedure> Select phenomena described below.

1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to restart the unit.

Gas circulation amount is down.

Measure gas pressure.

Thermo. operation of compressor

Gas shortage

Gas leak

Pipe clogging

2) If the unit stops once, it does not operate until the power will be turned on again.

To item of Outdoor unit does not operate.

3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.

(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)

Gas leak

P.M.V. is defective.

Miswiring of connecting wires of indoor/outdoor units

Clogging of pipe and coming-off of TC sensor

Refer to the chart in 11-6.

– 82 –

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

<Check procedure>

FILE NO. SVM-10050

1C

Gas leakage, disconnection of TS/TC sensors (Check code 02, 1C)

1E

Discharge temp. error, gas leakage

(Check code 03, 1E)

Valve drive check

Is coil of the pulse motor valve

(P.M.V.) correctly set?

YES

NO

Is connecter of coil connected to inverter?

YES

NO

Disconnect PMV connector then check coil resistance.

Is it 46±4

Ω

/Phase

(white-Red, Red-Orange, Yellow-Red, Blue-Red)?

YES

NO

Are temp. sensors of indoor/outdoor units correctly set to the holder?

NOTE :

The temperature sensors which are used to control pulse motor valve include indoor heat exchanger sensor (TC), outdoor heat exchanger temp. sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).

YES

NO

Gas amount check and valve clogging check

Remove TC sensor connector from the P.C. board in indoor unit.

(Remove connector from the P.C. board.)

Operate the air conditioner in COOL mode by RESET button on indoor unit

(“Beep” sound is heard if keeping pushed RESET button for 10 seconds.).

The operation enters temporary operation mode which fixes opening degree of compressor speed.

Check condensation at outlet of PMV, and then check operating pressure from the service port.

Existence of condensation at outlet of P.M.V.

If there is condensation at outlet (1/4 inch=Ø6.35mm valve side), the valve is clogged.

Check the operating pressure from service port, and add gas if pressure is low.

YES

– 83 –

Set it correctly.

Set it correctly.

Replace coil valve.

Set it correctly.

Replace valve.

Add gas.

FILE NO. SVM-10050

11-7.

Troubleshooting

11-7-1. How to Check Whether the Air Purifier is Good or Not

(

RAS-

18, 22SKVR-E

, RAS-18, 22SKVR-A

only)

Turn off the power breaker once, and turn on again after 10 seconds.

Does the OPERATION indicator flash?

YES

Turn off the power breaker and remove

CN41 (Micro switch connector).

NO of CN41 at PC side, and turn on the power breaker after 10 seconds.

To item “Power supply is not turned on”

Is DC12V applied

(Brown/GND) of CN1 of the high-voltage generator?

YES

Is there conduction of micro-switch connector under

OFF status of the micro-switch

(Front panel opened)?

NO


ON status of the micro-switch

(Front panel closed)?

YES

NO

YES

NO

Is DC12V applied

CN42 of the main P.C. board?

YES

Micro-switch is stuck

Micro-switch malfunction

NO

1) Check operation while short-circuiting CN41 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on the reactivation preventive timer and all display indicators go on for approx. 3 seconds when a signal is received.

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

(Because the power ON/OFF is controlled on the program)

3) Be sure not to touch the electric dust collector, ionizer, or ionized wire unit with the human body.

Replace the main P.C. board (MCC5045)

Replace micro-switch.

• Conduction check of micro-switch

ON

Tester

Push the switch

→

ON

Release the switch

→

OFF

Does the indoor fan rotate?

YES

Does the PURE indicator (Blue) or the FILTER indicator (Orange) go on?

YES

Does the PURE indicator go off within 2 seconds after it was ON, and does the FILTER indicator (Orange) go on?

YES

NO

NO

NO

Is DC-5V to DC-10V applied between

NO

To item “Only indoor fan does not operate”

Replace the main P.C. board.

• How to check output of the air purifier

<Caution on High Voltage!!>

of CN42 of the main

P.C. board?

YES

Collector output

Are the electric dust collector and ionizer dried?

(Electrode check)

NO

YES

Dry the electric dust collector and ionizer.

Refer to items, cleaning and check for the electric dust collector/ionizer/ ionized wire units.

When the ionized wire is

( )

replace each unit.

YES

GND

Referring to the right figure, check the high-output voltage of the air filter unit.

(NOTE)

Use an exclusive high voltage tester; otherwise the tester may be broken.

YES

Is output of the ionizer approx. 4.0 kV to 4.8 kV?

Is output of the collector approx. 3.0 kV to 3.8 kV?

NO

Be sure not to come to contact to the gray part or not to touch the ionized cables.

High-voltage tester

Ionizer output

Replace the high-voltage generator.

YES

Are the electric dust collector/ionizer/ionized wire units dirty?

Is an abnormal sound

(cracking noise) heard from the electrode?

NO

No trouble

– 84 –

11-7-2. How to Check Whether the Minus Ion Generator is Good or Not

(

RAS-

18, 22SKVR-E

, RAS-18, 22SKVR-A

only)

Turn off the power breaker once, and turn on again after 10 seconds.

FILE NO. SVM-10050

Does the OPERATION indicator flash?

YES

NO

Turn off the power breaker and remove

CN41 (Micro switch connector). of CN41 at PC side, and turn on the power breaker after 10 seconds.

To item “Power supply is not turned on”

NO

CN1 of the high-voltage generator in the air purifier?

YES


OFF status of the micro-switch

(Front panel opened)?

NO


ON status of the micro-switch

(Front panel closed)?

YES

YES

NO

Micro-switch is stuck

Micro-switch malfunction

1) Check operation while short-circuiting CN41 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on the reactivation preventive timer and all display indicators go on for approx. 3 seconds when a signal is received.

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

(Because the power ON/OFF is controlled on the program)

3) Be sure not to touch the electrode with the human body.

Replace the main P.C. board or the housing assembly.

Replace micro-switch.

• Conduction check of micro-switch

ON

Tester

Push the switch

→

ON

Release the switch

→

OFF

NO

Does the indoor fan rotate?

YES

Does the PURE indicator (Blue) or the FILTER indicator (Orange) go on?

NO

YES

Does the PURE indicator go off within 2 seconds after it was ON, and does the FILTER indicator (Orange) go on?

YES

NO

Referring to the right figure, check the high-voltage output of the air ionizer.

In this time, peel the thermal insulator, and attachit to the original position after check operation.

NOTE :

Use an exclusive high voltage tester; otherwise the tester may be broken.

NO

Does the electrode output approx. –6kV?

YES

No trouble

NO

Replace the high-voltage generator.

To item “Only indoor fan does not operate”

Replace the main P.C. board.

To item “How to check whether the air purifier is good or not”

• How to check output of the air purifier

<Caution on High Voltage!!>

Electrode

GND

High voltage unit

+

High Voltage tester

– 85 –

FILE NO. SVM-10050

11-8. How to Diagnose Trouble in Outdoor Unit

Check Power Supply

(Voltage Rate ±10%)

YES

Turn OFF power supply.

Remove connector of compressor.

Check 25A fuse (F01) failure?

YES

NO

NO

Check component parts of control board assembly by visual.

(damage, burn,.. Etc.)

YES

Replace control board.

Replace fuse.

Turn ON power

Supply.

Check terminal

Voltage of electrolytic capacitor are in

(Voltage Rate

±10%) x 1.414?

YES

NO


Turn ON the unit by remote controller and wait for 3 min.

(Cooling : 17°C)

A

– 86 –

•

Connect discharge resistance (approx. 100

Ω

,

40W) or soldering iron

(plug) between +, – terminals of the electrolytic capacitor (500

µ

F ) of C14 (with printed

CAUTION HIGH VOLTAGE) on P.C. board.


(Discharging period

10 seconds or more)


FILE NO. SVM-10050

A

Compressor is normal

Does outdoor fan operate normally?

YES

NO

YES

Does compresser operate normally?

NO



Replace outdoor fan motor.

NO

Remove connector CN300 of outdoor fan motor.

Check winding resistance by ohmmeter are correct?

Check rotor locking by rotate with hand. Can it rotate?

YES


Check compressor winding resistance correct?

YES

NO

Replace compressor.

Turn ON power supply.

Check voltage of the compressor connector is in rate.

(AC150V-270V)?

YES

NO

Replace compressor.


– 87 –

FILE NO. SVM-10050

11-9. How to Check Simply the Main Parts

11-9-1. How to check the P.C. board (Indoor unit)

(1) Operating precautions

1) When removing the front panel or the P.C.

board, be sure to shut off the power supply breaker.

2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.

3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing.

Do not pull at the lead wire.

(2) Inspection procedures

1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the copper foil pattern or this P.C. board.

2) The P.C. board consists of the following 2 parts

a. Main P.C. board part:

DC power supply circuit (5 V, 12 V),

Indoor fan motor control circuit, CPU and peripheral circuits, buzzer, and Driving circuit of louver.

b. Indication unit of infrared ray receiving

Infrared ray receiving circuit, LED:

11-9-2. How to shorten time for start the compressor.

1. Turn on remote.

2. Setting requirment operation.

3. Push off remote.

4. Press [SET] button while pressing [CHECK] button with a tip of a pencil.

5. Then press [ ] button to transmit the signal to the indoor unit.

PRESET

TEMP

ONE-TOUCH

FAN

MODE

QUIET

PURE

COMFORT

SLEEP


TIMER

ON OFF

CHK FILTER CLOCK

This setting helps to shortern a compressor waiting period when operate cool, heat or dry mode.

A compressor suddenly starts one order of Remote controller is received.

– 88 –

FILE NO. SVM-10050

11-9-2. P.C. Board Layout

[RAS-18, 22 Series]

GND

+12V +5V

[1] Sensor characteristic table

100

90

80

70

60

50

TD

40

30

20

10

0

0 10 20 30

TA, TC, TCJ, TO, TE, TS

40 50

Temperature ( C)

TD

TA

: Discharge temp. sensor

: Room temp. sensor

TC, TCJ : Heat exchanger temp. sensor

TO : Outdoor temp. sensor

TE

TS

: Outdoor heat exchanger temp. sensor

: Suction temp. sensor

– 89 –

FILE NO. SVM-10050

11-9-3. Indoor Unit (Other Parts)

No.

1

Part name

Room temp. (TA) sensor

Heat exchanger (TC) sensor

2

3

4

Remote controller

Louver motor

MP24Z3T

Indoor fan motor

Checking procedure

Disconnect the connector and measure the resistance value with tester.

(Normal temp.)

Temperature

Sensor

TA, TC (k

Ω

)

10°C

20.7

20°C

12.6

25°C

10.0

30°C

7.9

40°C

4.5

Refer to 11-5-1. (5).

Measure the resistance value of each winding coil by using the tester.

(Under normal temp. 25°C)

White

Yellow

1

2

Yellow

Yellow

3

4

Yellow

5

3

4

5

1

2

Position

1 to 2

1 to 3

1 to 4

1 to 5

Resistance value

250 ± 20

Ω

Refer to 11-5-1. (3) and (4).

11-9-4. Outdoor Unit

No.

1

Part name

Compressor

(Model : DA130A1F-27F)

~ 18SAV Series

(Model : DA150A1F-20F)

~ 22SAV Series

2

3

4

Outdoor fan motor

(Model : ICF-140-43-4R)

4-way valve coil

(Model : STF)

Pulse motor valve coil

(Model : CAM-MD12TF)

5 Outdoor temperature sensor

(TO), discharge temperature sensor (TD), suction temperature sensor (TS), outdoor heat exchanger temperature sensor (TE)


Measure the resistance value of each winding by using the tester.

Red

Position


DA130A1F-27F DA150A1F-20F

White Black

Red - White

White - Black

Black - Red

0.92 to 1.02

Ω

0.88 to 0.98

Ω

Under 20°C

Measure the resistance value of winding by using the tester.

Red

Position

Red - White

White - Black

Black- Red


20 to 22

Ω

20 to 22

Ω

20 to 22

Ω

White Black

Under 20°C



1435 ± 144

Ω

Under 20°C


Position

Red - White

White - Orange

Brown- Yellow

Brown- Blue


42 to 50

Ω

42 to 50

Ω

42 to 50

Ω

42 to 50

Ω

Under 20°C

Disconnect the connector, and measure resistance value with the tester.

(Normal temperature)

Temperature

Sensor

TD (k

Ω

)

TO,TS,TE (k

Ω

)

10°C 20°C 25°C 30°C 40°C 50°C

100 62 50

20.7

12.6

10.0

41

7.9

27

4.5

18

—

– 90 –

FILE NO. SVM-10050

11-9-5. Checking Method for Each Part

No.

1

Part name

Electrolytic capacitor

(For boost, smoothing)

2 Diode block


1. Turn OFF the power supply breaker.

2. Discharge all three capacitors completely.

3. Check that safety valve at the bottom of capacitor is not broken.

4. Check that vessel is not swollen or exploded.

5. Check that electrolytic liquid does not blow off.

6. Check that the normal charging characteristics are shown in continuity test by the tester.

C12 C13 C14

Case that product is good

Pointer swings once, and returns slowly.

When performing test once again under another polarity, the pointer should return.

MCC-5009

Soldered surface

C12, C13, C14

→

18SAV-E: 500µF/400V, 22SAV-E: 760µF/400V

1. Turn OFF the power supply breaker.

2. Completely discharge the four electrolytic capacitors.

3. Remove the diode block from the P.C. board (which is soldered in place).

4. Use a multimeter with a pointer to test the continuity, and check that the diode block has the proper rectification characteristics.

1

+

3

~

–

4

~

2

+

~ ~

–

1 2 3 4

(DBO1)

Tester rod

+

~

2

~

3

+

–

1

–

4

~

2

~

3

Resistance value in good product

∞

10 to 20

Ω

when the multimeter probe is reversed

– 91 –

FILE NO. SVM-10050

11-10. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

1. Symptom

• Outdoor fan motor does not rotate.

• Outdoor fan motor stops within several 10 seconds though it started rotating.

• Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.

Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”

2. Cause

The following causes are considered when the outdoor fan motor does not normally rotate.

1) Mechanical lock of the outdoor fan motor

2) Winding failure of the outdoor fan motor

3) Position-detect circuit failure inside of the outdoor fan motor

4) Motor drive circuit failure of the outdoor P.C. board

3. How to simply judge whether outdoor fan motor is good or bad

Turn OFF the breaker.

Disconnect two connectors (CN300) of the outdoor fan motor from the outdoor P.C. board.

Does the fan rotate without trouble when rotating it with hands?

YES

If the resistance value between

1 (Red lead) – 2 (White lead)

2 (White lead)

3 (Black lead)

– 3 (Black lead)

– 1 (Red lead) of the connector

(CN300 : Motor winding) is 20 to 22

Ω

, it is normal.

YES

Fan motor is normal.

(Outdoor P.C. board error)

NO

NO

Fan motor error

CN300

NOTE :

However, GND circuit error inside of the motor may be accepted in some cases when the above check is performed.

When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.

– 92 –

FILE NO. SVM-10050

12. HOW TO REPLACE THE MAIN PARTS

WARNING

• Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs.

Electric shocks may occur if the power plug is not disconnected.

• After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.

If this check is omitted, a fire and/or electric shocks may occur.

Before proceeding with the test run, install the front panel and cabinet.

• Ensure that the following steps are taken when doing repairs on the refrigerating cycle.

1. Do not allow any naked flames in the surrounding area.

If a gas stove or other appliance is being used, extinguish the flames before proceeding.

If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.

2. Do not use welding equipment in an airtight room.

Carbon monoxide poisoning may result if the room is not properly ventilated.

3. Do not bring welding equipment near flammable objects.

Flames from the equipment may cause the flammable objects to catch fire.

• If keeping the power on is absolutely unavoidable while doing a job such as inspecting the circuitry, wear rubber gloves to avoid contact with the live parts.

Electric shocks may be received if the live parts are touched.

High-voltage circuits are contained inside this unit.

Proceed very carefully when conducting checks since directly touching the parts on the control circuit board may result in electric shocks.


No.

1

Part name

Front panel

Procedures

1) Stop operation of the air conditioner and turn off its main power supply.

2) Open the air inlet grille, push the arm toward the outside, and remove the grille.

Remarks

3) Remove the left and right air filters.

Remove the plasma air purifier.

(for model RAS-18, 22SKVR-E only)

– 93 –

No.

1

Part name

Front panel

Procedures

4) Push “PUSH” part under the front panel and remove hooks of the front panel from the installation plate.

FILE NO. SVM-10050

Remarks

Installation plate

Front panel

Push

5) Remove the front panel fixing screws.

(4 pcs.)

6) Take off four hooks of panel from rear side.

4 screws

2 Screws four hooks

<How to assemble the front panel>

1) Push 3 center positions and 2 lower center positions of the air outlet, and then hang the hanging hooks (4 pcs.) at the top side of the front panel to the rear plate.

2) Insert the plasma air purifier

(for model RAS-18, 22SKVR-E).

Push in the plasma air purifier until the protrusions on both sides are completely inserted into the holders.

If installation is incomplete, the FILTER indicator (orange) may light.

3) Tighten four screws.

• Incomplete hanging or incomplete pushing may cause a dewdrops or generation of a fluttering sound.

– 94 –

No.

2

Part name

High voltage generator

(only in model

RAS-18, 22 SKVR-E)

Procedures

1) Follow to the procedure in the item

1

.

2) To remove the air ionizer from the back body, pull it toward you.

FILE NO. SVM-10050

Remarks

3) Disconnect the connectors of the high voltage generator.

4) Remove the fixing screws

(2 pcs) and remove the high voltage generator from the evaporator.

<How to assemble the high voltage generator>

1) Insert the high voltage generator straight into the evaporator voltage generator from the evaporator.

2) Secure it using the fixing screws. (2 pcs)

3) Connect the connectors of the high-voltage generator

4) Attach the air ionizer to the back body.

– 95 –

No.

Part name

Electric parts box assembly

Procedures

1) Remove screw of earth lead attached to the end plate of the evaporator.

2) Remove the lead wire cover, and remove connector for the fan motor and connector for the louver motor from the electric parts box assembly.

3) Pull out TC sensor from sensor holder of the evaporator.

FILE NO. SVM-10050

Remarks

box cover's screw

4) Disengage the display unit by simply pushing at the top of the display unit.

5) Remove the fixing screw that secures the conduit mount, electric parts box assembly,

LED assembly and remove the assembly.

<How to assemble the electric parts box>

1) Hook the top part of the electric parts box assembly onto the claws on the back body, and secure it using the fixing screw.

Now attach the display unit. Connect the connectors for the fan motor and louver motor.

2) Secure the grounding wire using the fixing screw. Insert the TC sensor into the sensor holder.

* Be absolutely sure to loop the grounding wire and TC sensor leads once at the bottom.

Earth Screw TC sensor

Fan motor connector

Louver motor connector

Fixing screw

Fixing screw

LED assembly

Loof the qrunding wire

– 96 –

FILE NO. SVM-10050

Remarks No.

Part name

Horizontal louver

Procedures

1) Remove shaft of the horizontal louver from the back body.

(First remove the left shaft, and then remove other shafts while sliding the horizontal louver leftward.)

Evaporator

(Heat exchanger)

1) Follow to the procedure in the item

.

2) Remove the pipe holder from the rear side of the main unit. (Figure 1)

3) Remove two fixing screws at the left side of the end plate of the heat exchanger.

Pipe hoolder

(Figure 1)

Screw

– 97 –

Screw

(Figure 2)

(Figure 3)

No.

Part name

n

Evaporator

(Heat exchanger)

Procedures

4) Remove three fixing screw at the right side of the heat exchanger, and separate the heat exchanger from the back body.

(Figure 4, 5)

One screw

FILE NO. SVM-10050

(Figure 4)

o

Bearing 1) Follow to the procedure in the item .

2) Remove the two screws used to secure the bearing base.

screws

3) R emove the bearing base.

<Caution at assembling>

• If the bearing is out from the housing, push it into the specified position and then incorporate it in the main body.

Bearing

One screw

(Figure 5)

Bearing base

Bearing base

Bearing

– 98 –

No.

p

Part name

Fan motor

Procedures

1) Follow to the procedure till item

.

2) Loosen the set screw of the cross flow fan.

3) Remove two fixing screws of the motor cover and them remove the motor cover.

4) Remove two more fixing screws of the motor band and remove the motor band.

FILE NO. SVM-10050

Remarks

Set screw

5) Pull the fan motor outward.

Two screws on motor cover

Two screws on motor band

– 99 –

No.

q

Part name

Cross flow fan

Procedures

<Caution at reassembling>

1) To incorporate the fan motor incorporate the motor into the position in the following figure, and then install the fan motor.

• Install the cross flow fan so that the right end of the 1st joint from the right of the cross flow fan is set keeping 5.0 mm from closed wall of the main unit.

• Holding the set screw, install the cross flow fan so that flat area on shaft of the fan motor comes to the mounting hole of the set screw.

• Perform positioning of the fan motor as follows:

• When assembling the fan motor, the fan motor must be installed in such a way that the fan motor leads will be taken out is positioned at the bottom front.

• After assembling the two hooking claws of the motor band (right) into the main body, position the fan motor, insert it, and then secure the motor band (right) using the two fixing screws.

FILE NO. SVM-10050

Remarks

– 100 –

FILE NO. SVM-10050


No.

Part name

Common procedure

Procedure

1. Detachment

NOTE

Wear gloves for this job.

Otherwise, you may injure your hands on the parts, etc.

Remarks

Upper cabinet

Waterproof cover

1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.

2) Remove the valve cover.

(ST1TØ4 × 10L 2 pcs.)

• After removing screw, remove the valve cover pulling it downward.

3) Remove cord clamp (ST2TØ4 × 14L

3 pcs.), and then remove connecting cable.

4) Remove the upper cabinet.

(ST1TØ4 × 10L 5 pcs.)

• After removing screws, remove the upper cabinet pulling it upward.

2. Attachment

1) Attach the water-proof cover.

NOTE

The water-proof cover must be attached without fail in order to prevent rain water, etc. from entering inside the indoor unit.

Valve cover

2) Attach the upper cabinet.

(ST1TØ4 × 10L 5 pcs.)

3) Perform cabling of connecting cable, and attach the cord clamp.

• Fix the cord clamp by tightening the screws (ST2T

∅

4 x 14L 3 pcs.), fitting 2 concave parts of the cord clamp to each connecting cables.

4) Attach the valve cover.

(ST1T

∅

4 x 10L 2 pcs.)

•

Insert the upper part into the square hole of the side cabinet, set hook claws of the valve cover to square holes (at three positions) of the main unit, and attach it pushing upward,

This line shall be pavallel to the front cabinet

These 2 bending parts shall be put inside of a unit by bending these 2 ports.

This part shall be put on the side cabinet.

Fit the corner of the water proof cover to the corner of the front cabinet.

This part shall cover the gap between the inverter box and the front cabinet.

How to mount the water-proof cover

–

101

–

FILE NO. SVM-10050

Remarks No.

Part name

Front cabinet

Procedure

1. Detachment

1) Perform step 1 in

.

2) Remove the fixing screws (ST1TØ4 × 10L

2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST1TØ4

× 10L 4 pcs.) used to secure the front cabinet at the bottom, and the fixing screws (ST1TØ4 × 10L 2 pcs.) used to secure the motor base.

• The front cabinet is fitted into the side cabinet (left) at the front left side so pull up the top of the front cabinet to remove it.

Front cabinet

2. Attachment

1) Insert the claw on the front left side into the side cabinet (left).

2) Hook the bottom part of the front right side onto the concave section of the bottom plate. Insert the claw of the side cabinet (right) into the square hole in the front cabinet.

3) Return the screws that were removed above to their original positions and attach them.

Claw

Square hole

Concave section

– 102 –

No.

Part name

Inverter assembly

FILE NO. SVM-10050

Procedure Remarks

1) Perform work of item 1 in

.

2) Remove screw (ST1TØ4 × 10L 2 pcs.) of the upper part of the front cabinet.

• If removing the inverter cover in this condition, P.C. board can be checked.

• If there is no space above the unit, perform work of 1 in

.

Inverter cover

P.C. board

(Soldered surface)

Be careful to check the inverter because high-voltage circuit is incorporated in it.

3) Perform discharging by connecting , polarity by discharging resistance (approx.

100

Ω

40W) or plug of soldering iron to , terminals a of the C14 (printed “CAUTION

HIGH VOLTAGE” is attached.) electrolytic capacitor (760µF or 500

µ

F) on P.C. board.


(Discharging period

10 seconds or more)


Be careful to discharge the capacitor because the electrolytic capacitor cannot naturally discharge and voltage remains according to trouble type in some cases.

NOTE

This capacitor is one with mass capacity.

Therefore, it is dangerous that a large spark generates if short-circuiting between

,

4) Remove screw (ST1T

∅

4 x 10L 4pcs.) fixing

the terminal part of inverter box to the main body.

5) Remove the front cabinet by performing step

k

(ST1T

∅

4 x 10L) for securing the main body and inverter box.

6) Remove various lead wires from the holder at upper part of the inverter box.

7) Pull the inverter box upward.

8) Disconnect connectors of various lead wires.

The connector is one with lock, so remove it while pushing the part indicated by an arrow.

Requirement

As each connector has a lock mechanism, avoid to remove the connector by holding the lead wire, but by holding the connector.

Be sure to remove the connector by holding the connector, not by pulling the lead wire.

−

103

−

No.

Part name

Control board assembly

FILE NO. SVM-10050

Procedure

1. Disconnect the leads and connectors connected to the other parts from the control board assembly.

1) Leads

• 3 leads (black, white, orange) connected to terminal block.

• Lead connected to compressor :

Disconnect the connector (3P).

• Lead connected to reactor :

Disconnect the two connectors (2P).

2) Connectors (×8)

CN300 : Outdoor fan motor (3P: white)*

(* : See Note)

CN700 : PMV (6P: white)

CN603 : TS sensor (3P: white)*

CN601 : TD sensor (3P: white)*

CN602 : TO sensor (2P: white)

CN603

CN601

Remarks

CN700 CN602 CN300

CN300 and CN603 are connectors with locking mechanisms: as such, to disconnect them, they must be pressed in the direction of the arrow while pulling them out.

NOTE

These connectors have a disconnect prevention mechanism: as such, the lock on their housing must be released before they are disconnected.

2. Remove the control board assembly from the P.C.

board base. (Remove the heat sink and control board assembly while keeping them screwed together.)

NOTE

Disengage the four claws of the P.C. board base, hold the heat sink, and lift to remove it.

3. Remove the two fixing screws used to secure the heat sink and control board assembly.

4. Mount the new control board assembly.

NOTE

When mounting the new control board assembly, ensure that the P.C. board is inserted properly into the P.C. board support groove.

P.C. board base

P.C. board

– 104 –

FILE NO. SVM-10050

Remarks No.

Part name

Side cabinet

Procedure

1. Side cabinet (right)


and all the steps in

.

2) Remove the fixing screw (ST1TØ4 × 10L

4 pcs.) used for securing the side cabinet to the bottom plate and valve fixing panel.

2. Side cabinet (left)


.


1 pc.) used to secure the side cabinet

(left) onto the heat exchanger.


2 pcs.) used for securing the side cabinet to the bottom plate and heat exchanger.

Hook the claw noto the bottom plate

The back body section hooked onto the bottom plate here.

Detail A Detail B Detail C

Fan motor 1) Perform work of item 1 of

and

.

2) Remove the flange nut fixing the fan motor and the propeller.

• Flange nut is loosened by turning clockwise. (To tighten the flange nut, turn counterclockwise.)

3) Remove the propeller fan.

4) Disconnect the connector for fan motor from the inverter.

5) Remove the fixing screws (4 pcs.) holding by hands so that the fan motor does not fall.

* Precautions when assembling the fan motor

Tighten the flange nut using a tightening torque of 4.9 N•m.

Propeller fan

Fan motor

Flange nut

– 105 –

FILE NO. SVM-10050

Remarks No.

Part name

Compressor

Procedure

1) Perform work of item 1 of

and

,

,

,

.

2) Extract refrigerant gas.

3) Remove the partition board.

(ST1TØ4 × 10L 3 pcs.)

4) Remove the sound-insulation material.

5) Remove terminal cover of the compressor, and disconnect lead wire of the compressor from the terminal.

6) Remove pipe connected to the compressor with a burner.

7) Remove the fixing screw of the bottom plate and heat exchanger. (ST1TØ4 × 10L 1 pc.)

8) Remove the fixing screw of the bottom plate and valve fixing plate.

(ST1TØ4 × 10L 1 pc.)

9) Pull upward the refrigeration cycle.

10) Remove NUT (3 pcs.) fixing the compressor to the bottom plate.

Compressor

Reactor 1) Perform work of item 1 of

, and

.

2) Remove screws fixing the reactors.

Reactor

– 106 –

FILE NO. SVM-10050

Remarks No.

Part name

Electronic expansion valve coil

Procedure

1. Detachment


, all the steps in

and 1 in

.

2) Remove the coil by rotating it at 90

° toward either direction.

2. Attachment

1) Insert a valve coil in a volve body to the bottom, and fix it by rotating at 90° toword either direction. And confirm to fix it surely.

Lead connecting part

Fan guard

1. Detachment

1) Perform work of item 1 of

.

2) Remove the front cabinet, and put it down so that fan guard side directs downward.

Perform work on a corrugated cardboard, cloth, etc. to prevent flaw to the product.

3) Remove the hooking claws by pushing minus screwdriver according to the arrow mark in the right figure, and remove the fan guard.

2. Attachment

1) Insert claws of the fan guard in the holes of the front cabinet. Push the hooking claws (9 positions) by hands and fix the claws.

Check that all the hooking claws are fixed to the specified positions.

Minus screwdriver

Hooking claw

– 107 –

No.

11

Part name Procedure

TE sensor (Outdoor heat exchanging temperature sensor)

• Attachment

With the leads pointing downward and the sensor leads pointing in the direction shown in the figure, install the sensor onto the straight pipe part of the condenser output pipe.

FILE NO. SVM-10050

Remarks

Detail C for RAS-18SAV

Detail C for RAS-22SAV

12

13

14

TS sensor (Suction pipe temperature sensor)

• Attachment

With its leads pointing downward, point the sensor in the direction of the packed valve, and install it onto the straight pipe part of the suction pipe.

TD sensor (Discharge pipe temperature sensor)

• Attachment

With its leads pointed downward, install the sensor onto the vertical straight pipe part of the discharge pipe.

TO sensor (Outside air temperature sensor)

• Attachment

Insert the outdoor air temperature sensor into the holder, and install the holder onto the heat exchanger.

Detail A

TS sensor

Detail B

TD sensor

Arrow D

TO sensor

CAUTION

During the installation work (and on its completion), take care not to damage the coverings of the sensor leads on the edges of the metal plates or other parts. It is dangerous for these coverings to be damaged since damage may cause electric shocks and/or a fire.

CAUTION

After replacing the parts, check whether the positions where the sensors were installed are the proper positions as instructed. The product will not be controlled properly and trouble will result if the sensors have not been installed in their proper positions.

– 108 –

FILE NO. SVM-10050

Remarks No.

14

Part name

Replacement of temperature sensor for servicing only

Common service parts of sensor TO,

TS

Procedure

1) Cut the sensor 100 mm longer than old one.

2) Cut the protective tube after pulling out it (200 mm).

3) Move the protective tube toward the thermal sensor side and tear the tip of lead wire in two then strip the covering part.

4) Pass the stripped part through the thermal constringent tube.

5) Cut the old sensor 100 mm length on the connector side, and recycle that connector.

6) Tear the lead wire in two on the connector side and strip the covering part.

7) Twist the leads on the connector and sensor sides, and solder them.

8) Move the thermal constringent tubes toward the soldered parts and heat them with the dryer and constring them.

9) Wind the attached color tape round the both terminals of the protective tube when colored protective tube is used.

10) Fix the sensor again.

Thermal sensor part

200

Connector

Cutting here

100

Thermal constringent tube

Cutting here

100

Cutting here

15

70

Soldered part

Dryer

Winding the color tape

NOTE

1) Store the joint part of the sensor and the connector in the electric parts box.

2) Never joint them near the thermal sensor part. Otherwise it would cause insulation inferiority because of dew drops.

3) When replacing the sensor using the colored protective tube, wind the color tape matching the color of that tube.

15

70

These are parts for servicing sensors.

Please check that the accessories shown in the right table are packed.

3

4

1

2

5

6

Parts name

Sensor

Sensor Spring (A)

Sensor Spring (B)

Thermal constringent tube

Color tape

Terminal

1

3

1

3

Q'ty

1

1

Remarks

Length : 3m

For spare

For spare

Including one spare

9 colors

– 109 –


FILE NO. SVM-10050

13. EXPLODED VIEWS AND PARTS LIST

227

235

205

218

212 207

230

237

204

209

226

234

202

203

208

228

236

229

210

222

225

201

224

223

Electric Parts Assembly

Location

No.

201

201

202

203

204

205

206

207

208

209

210

212

218

222

223

224

225

226

Part

No.

231

Description

232

Location

No.

233

238

206

Part

No.

Description

43T21371 MOTOR, FAN

43T21407 MOTOR, FAN (18,22SKV-ND)

43T22312 BEARING ASSY, MOLD (Made in Thailand)

43T70313 HOSE, DRAIN (Made in Thailand)

43T20016 FAN, ASSY, CROSS FLOW

227

228

43T44030 EVAPORATOR ASSY (Made in Thailand)

(18SKVR-E,18SKV-E,18SKV2-E,18SKV-A,

18SKVR-A,18SKV-ND)

43T09041 GRILLE ASSY, SUB TOSHIBA (18,22SKV-E,

18,22SKV2_E,18,22SKV-A,18,22SKV-ND)

(Made in Thailand)

43T49010 PIPE, SHIELD (Made in Thailand)

43T83003 HOLDER, REMOTE CONTROL

(Made in Thailand)

43T82008 PLATE, INSTALLATION (Made in Thailand)

43T69499 UNIT, ELECTRIC PURIFIER

(18,22SKVR-E,18,22SKVR-A)

43T19333 HOLDER, SENSOR (Made in Japan)

43T49043 HOLDER, PIPE (Made in Thailand)

43T39021 BASE, BEARING (Made in Thailand)

43T79313 CAP, DRAIN (Made in Malaysia)

229

230

231

232

233

234

43T80019 AIR FILTER (Made in Thailand)

43T00052 PANEL ASSY, SERVICE (Made in Thailand)

(18,22SKV-E,18,22SKV2_E,18,22SKV-A,

18,22SKV-ND)

43T80020 GENERATOR, ASSY HV


43T62031 COVER, TERMINAL (Made in Thailand)

43T69640 REMOTE CONTROLLER, WIRELESS


43T03015 BODY ASSY, BACK


43T39020 BAND, MOTOR, LEFT (Made in Thailand)

43T39023 BAND,MOTOR, RIGHT DOWN

235 43T44031 EVAPORATOR ASSY (22SKVR-E,22SKV-E,

22SKV2-E,22SKV-A,22SKVR-A,22SKV-ND)

(Made in Thailand) 236 43T09042 GRILLE ASSY, SUB TOSHIBA

43T39022 BAND, MOTOR, RIGHT UP (18,22SKVR-E,18,22SKVR-A)

( Made in Thailand) 237 43T00055 PANEL ASSY, SERVICE

43T09040 LOUVER, HORIZONTAL (Made in Thailand)

43T03014 BODY ASSY, BACK (Made in Thailand)

(18,22SKV-E,18,22SKV2_E,18,22SKV-A,

18,22SKV-ND)

238


43T69615 REMOTE CONTROLLER, WIRELESS

(18,22SKV-E,18,22SKV2_E,18,22SKV-A,

18,22SKV-ND)

– 110 –

Indoor Unit (Part-E)

FILE NO. SVM-10050

407

402

404

405

412

411

401

403

413

Location

No.

401

402

403

404

405

405

Part

No.

Description

43T50308 SENSOR HEAT EXCHANGER

43T60331 TERMINAL; 3P

43T69320 TEMPERATURE SENSOR

(Made in Thailand)

43T62003 CORD CLAMP (Made in Thailand)

43T69736 PC BOARD ASSY,WRS-LED

(Made in Thailand) (18,22SKV-E,

(18,22SKV2-E,18,22SKV-A, 18,22SKV-ND)

43T69737 PC BOARD ASSY,WRS-LED

(18,22SKVR-E, 18,22SKVR-A)

Location

No.

407

407

407

407

411

412

413

Part

No.

Description

43T69721 PC BOARD ASSY

(18SKV-E,18SKV2-E,18SKV-A,18SKV-ND)

43T69722 PC BOARD ASSY (22SKV2-E,22SKV-A,

22SKV-E,22SKV-ND)

43T69723 PC BOARD ASSY (18SKVR-E, 18SKVR-A)

43T69724 PC BOARD ASSY (22SKVR-E, 22SKVR-A)

43T51308 SWITCH ASSY,MICRO


43T21397 LOUVER MOTOR (Made in Thailand)

43T60386 MOTOR CORD (Made in Thailand)

– 111 –


FILE NO. SVM-10050

10

11

12

13

14

15

16

Location

No.

1

2

3

6

7

4

5

8

8

9

9

Part

No.

Description

43T00468 FRONT CABINET

43T00459 LEFT CABINET (Made in Thailand)

43T42327 BASE PLATE ASSEMBLY

(Made in Thailand)

43T00452 UPPER CABINET (Made in Thailand)

43T19329 FAN GUARD

43T19330 PACKED VALVE COVER

43T62325 ELECTRIC PART COVER

43T41430 COMPRESSOR

(18SAV-E2,18SAV2-E,18SAV2-A)

43041627 COMPRESSOR, ASSY


43T43451 CONDENSER ASSEMBLY


43T43452 CONDENSER ASSEMBLY


43T46358 VALVE;PACKED 6.35 DIA

43T46355 VALVE;PACKED 12.7 DIA (H4)

43T47331 BONNET, 6.35 DIA (Made in Thailand)

43T47333 BONNET, 12.70 DIA (Made in Thailand)

43T00448 FIXING PLATE VALVE

43T00451 RIGHT CABINET ASSEMBLY

43T46347 BODY-PMV

28

29

30

31

32

33

34

Location

No.

17

18

21

22

23

24

25

26

26

27

27

Part

No.

Description

43T63332 COIL-PMV

43T58306 REACTOR (Made in Thailand)

43T20319 PROPELLER FAN (Made in Thailand)

43T21375 FAN-MOTOR

43T47001 NUT FLANGE (Made in Japan)

43T97001 NUT

43T49335 RUBBER CUSHION (Made in Malaysia)

43T46343 4 WAY VALVE


43T46370 VALVE-4WAY


43T63320 4 WAY VALVE COIL ASSEMBLY


43T63334 ASM-COIL-4WAY


43T63319 HOLDER,SENSOR (Made in Thailand)

43T79305 DRAIN NIPPLE

43T39333 MOTOR BASE CONNECTION PLATE

43T63318 HOLDER,SENSOR (Made in Japan)



43T19331 FIN GUARD (Made in Thailand)

– 112 –

FILE NO. SVM-10050

13-3. P.C. Board Layout (Outdoor)

701

704

702

707

703

706

TD Sensor (Ø4)

TE Sensor (Ø6)

TS Sensor (Ø6)

TO Sensor (Ø6)

705

Location

No.

701

701

702

702

Part

No.

Description

43T62320 HEATSINK (Made in Thailand)


43T62331 HEATSINK (Made in Thailand)


43T69880 PC BOARD (Made in Thailand)


43T69881 PC BOARD (Made in Thailand)


– 113 –

Location

No.

703

704

705

706

707

Part

No.

Description

43T60392 TERMINAL-5P

43T60326 FUSE

43T60377 TEMPERATURE SENSOR

43T50304 SENSOR;HEAT EXCHANGER

(Made in Thailand)

43T62313 BASE-PLATE-PC (Made in Thailand)

TOSHIBA CARRIER (THAILAND) CO.,LTD.

144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI,

AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

TOSHIBA CARRIER CORPORATION

23-17, TAKANAWA 3 CHOME, MINATOKU, TOKYO, 108-0074, JAPAN

Copyright © 1999 to 2007 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.