Toshiba RAS-13JKCVP, RAS-13JACVP, RAS-10JKCVP, RAS-10JACVP SERVICE MANUAL

FILE NO. A03-001

Revised:5/July/2004

SPLIT TYPE

RAS-10JKCVP

RAS-10J A CVP

RAS-13JKCVP

RAS-13J A CVP

PRINTED IN JAPAN, Jul.,2004 ToMo

CONTENTS

1. SPECIFICATIONS ..................................................................................... 3

2. REFRIGERANT R410A ............................................................................. 5

3. CONSTRUCTION VIEWS ........................................................................ 13

4. WIRING DIAGRAM.................................................................................. 15

5. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 16

6. REFRIGERANT CYCLE DIAGRAM ........................................................ 17

7. CONTROL BLOCK DIAGRAM................................................................ 18

8. OPERATION DESCRIPTION................................................................... 20

9. INSTALLATION PROCEDURE................................................................ 36

10. HO W T O DIA GNOSE THE TROUBLE...................................................... 47

11. HOW TO REPLACE THE MAIN PARTS................................................... 68

12. EXPLODED VIEWS AND PARTS LIST................................................... 81

– 2 –

1. SPECIFICATIONS

1-1. Specifications

RAS-10JKCVP/RAS-10JACVP, RAS-13JKCVP/RAS-13JACVP

Unit model

Cooling capacity (kW) 2.5 3.5 Cooling capacity range (kW) 0.6–3.4 0.6–4.2 Power supply 1Ph/50Hz/220–240 V, 1Ph/60Hz/220 V Electric

characteristics

COP (Cooling) 4.39 3.68 Operating

noise

Indoor unit

Outdoor unit

Piping connection

connection

Accessory Indoor unit

Indoor Outdoor

Indoor

Outdoor

Indoor

Outdoor (Cooling) (dB•A) 45 48 Unit model Dimension

Net weight (kg) 10 10 Fan motor output (W) 30 30 Air flow rate (Cooling) (m³/h) 550 560 Unit model Dimension

Net weight (kg) 33 33 Compressor

Fan motor output (W) 43 43 Air flow rate (Cooling) (m³/h) 2150 2410 Type Flare connection Flare connection

Maximum length (m) 25 25 Maximum chargeless length (m) 15 15 Maximum height difference (m) 10 10 Name of refrigerant R410A R410ARefrigerant Weight (kg) 0.9 0.9 Power supply 3 Wires : includes earth (Outdoor) 3 Wires : includes earth (Outdoor)Wiring Interconnection 4 Wires : includes earth 4 Wires : includes eart h

Operation mode Running current (A) 0.15 0.15 Power cons um ption (W) 30 30 Power factor (%) 87 87 Operation mode Running current (A) 2.73/2.60/2.49 4.65/4.44/4.25 Power cons um ption (W) 540 920 Power factor (%) 90 90 Starting current (A) 2.88/2.75/2.64 4.80/4.59/4.40

High (Cooling) (dB•A) 42 43 Medium (Cooling) (dB•A) 33 34 Low (Cooling) (dB•A) 25 26

Height (mm) 250 250 Width (mm) 790 790 Depth (mm) 208 208

Height (mm) 550 550 Width (mm) 780 780 Depth (mm) 270 270

Motor output (W) 750 750 Type Twin rotary type with DC-i nvert er variable speed control Model DA91A1F-45F DA91A1F-45F

Liquid side Ø6.35 Ø6.35Indoor unit Gas side Ø9.52 Ø9.52 Liquid side Ø6.35 Ø6.35Outdoor unit Gas side Ø9.52 Ø9.52

Indoor (Cooling) (°C) 21–32 21–32Usable temperature range Outdoor (Cooling) (°C) 10–46 10–46 Installation plate 1 1 Wireless remote controller 1 1 Batteries 2 2 Remote controller holder 1 1 Zeolite-plus filter 1 1 Zeolite-3G filter 1 1 Mounting screw 6 (Ø4 x 25L) 6 (Ø4 x 25L) Flat head wood screw 2 (Ø3. 1 x 16L) 2 (Ø3.1 x 16L) Dust collect i n g un it 1 1 Installation manual 1 1 Owner’s manual 1 1 Pattern 1 1

RAS-10JKCVP RAS-13JKCVP RAS-10JACVP RAS-13JACVP

Cooling

RAS-10JKCVP RAS-13JKCVP

RAS-10JACVP RAS-13JACVP

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

– 3 –

1-2. Operation Characteristic Curve

8 7 6 5 4

Current (A)

3 2 1 0

0 20406080 120100

RAS-10JKCVP RAS-13JKCVP

• Conditions Indoor : DB 27˚C/WB 19˚C Outdoor : DB 35˚C Air flow : High Pipe length : 5m Voltage : 230V

Compressor speed (rps)

1-3. Capacity Variation Ratio According to Temperature

110

100

Capacity ratio (%)

32 34 36 38 40 4233 35 37 39 41 43 44 45 46

RAS-10JKCVP RAS-13JKCVP

Outdoor temp. (˚C)

1-4. Pipe Length-Capacity Characterisitic

120

110

100

Capacity (%)

RAS-10JKCVP RAS-13JKCVP

• Conditions Indoor : DB27˚C/WB19˚C Indoor air flow : High Pipe length : 5m

Capacity ratio : 100% =

3.5 kW (RAS-13JKCVP)

2.5 kW (RAS-10JKCVP)

20g/m is added for 15m or more.

0 5 10 15 20 25 30

Pipe length (m)

– 4 –

Capacity ratio : 100% =

3.5 kW (RAS-13JKCVP)

2.5 kW (RAS-10JKCVP)

2. 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.

2-1. 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 exclusiv e for R410A, it is necessary to carry out installation/servicing safely while taking the following precautions into consideration.

(1) Nev er use refriger ant 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 exclusiv e 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.

(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’s may result in water leakage, electric shock and fire, etc.

2-2. Refrigerant Piping Installation

2-2-1. 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 2-2-1. Never use copper pipes thinner than 0.8 mm even when it is available on the market.

– 5 –

Table 2-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter

1/4 3/8 1/2 5/8

(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 2-2-3 to 22-6 below .

Outer diameter (mm)

6.35

9.52

12.70

15.88

R410A R22

0.80 0.80

1.00 1.00

b) Socket Joints

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

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

Table 2-2-2 Minimum thicknesses of socket joints

Nominal diameter

1/4 3/8 1/2 5/8

Reference outer diameter of

copper pipe jointed (mm)

2-2-2. 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 other than lubricating oils used in the installed air conditioner 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.

Minimum joint thickness

(mm)

6.35

9.52

12.70

15.88

(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 b urrs and clean the cut surface before installation.

c) Insertion of Flare Nut

0.50

0.60

0.70

0.80

– 6 –

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.

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

ØD

Fig. 2-2-1 Flare processing dimensions

Nominal

diameter

1/4 3/8 1/2 5/8

Nominal

diameter

1/4 3/8

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

Flare tool for R410A

clutch type

0 to 0.5 1.0 to 1.5 1.5 to 2.0 0 to 0.5 1.0 to 1.5 1.5 to 2.0 0 to 0.5 1.0 to 1.5 2.0 to 2.5 0 to 0.5 1.0 to 1.5 2.0 to 2.5

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

A (mm)

Outer

diameter

(mm)

6.35

9.52

Thickness

(mm)

0.8

Flare tool for R410A

clutch type

0 to 0.5 0.5 to 1.0 1.0 to 1.5 0 to 0.5 0.5 to 1.0 1.0 to 1.5

Conventional flare tool

Clutch type Wing nut type

Conventional flare tool

Clutch type Wing nut type

1/2 5/8

Nominal

diameter

1/4 3/8 1/2 5/8

12.70

15.88

0.8

1.0

0 to 0.5 0.5 to 1.0 1.5 to 2.0 0 to 0.5 0.5 to 1.0 1.5 to 2.0

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

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

ABCD

9.1 9.2 6.5 13

13.2 13.5 9.7 20

16.6 16.0 12.9 23

19.7 19.0 16.0 25

Dimension (mm)

– 7 –

Flare nut

width

(mm)

17 22 26 29

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

Nominal

diameter

1/4 3/8 1/2 5/8 3/4

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

19.05

Thickness

(mm)

0.8

1.0

45˚ to 46

Dimension (mm)

Flare nut

width

ABCD

9.0 9.2 6.5 13

13.0 13.5 9.7 20

16.2 16.0 12.9 20

19.7 19.0 16.0 23

23.3 24.0 19.2 34

B A

(mm)

17 22 24 27 36

Fig. 2-2-2 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.

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

Nominal

diameter

Outer

diameter

(mm)

Tightening torque

N•m (kgf•cm)

43˚ to 45

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 2-2-7 shows reference v alues.

NOTE :

When applying oil to the flare surface, be sure to use oil designated by the manuf acturer. If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

1/4 3/8 1/2 5/8

6.35

9.52

12.70

15.88

14 to 18 (140 to 180) 33 to 42 (330 to 420) 50 to 62 (500 to 620) 63 to 77 (630 to 770)

– 8 –

16 (160), 18 (180)

42 (420) 55 (550) 65 (650)

2-3. Tools

2-3-1. Required T ools

The service port diameter of packed valve of the outdoor unit in the air conditioner 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 follo wing three types.

(1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) (2) Tools exclusiv e for R410A, but can be also used for con ventional 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

Conventional air

conditioner installation

Whether new equipment can be used with conventional refrigerant

(Note 1)

No.

3 4

5 6

7 8

Used tool

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

Usage

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

Yes

Yes Yes

R410A

Whether conventional equipment can be used

(Note 1)

air conditioner installation

Existence of new equipment for R410A

(Note 2)

X X

X X X

(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 (2) Thermometer

(3) Insulation resistance tester (4) Electroscope

– 9 –

2-4. 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.

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.

Open fully both packed valves at liquid and gas sides.

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.

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

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.

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.

(For refrigerant charging, see the figure below.)

(1) Nev er 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)

(Liquid side)

(OUTDOOR unit)

Opened

Refrigerant cylinder

(With siphon pipe)

Check valve

Open/Close valve

for charging

Electronic balance for refrigerant charging

Fig. 2-4-1 Configuration of refrigerant charging

(Gas side)

Closed

Service port

– 10 –

(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 ] [ Cylinder without siphon ]

Gauge manifold

OUTDOOR unit

Refrigerant

cylinder

Gauge manifold

OUTDOOR unit

cylinder

Refrigerant

Electronic

balance

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.

2-5. Brazing of Pipes

2-5-1. 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.

Electronic

balance

Siphon

Fig. 2-4-2

(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.

(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.

2-5-2. Flux

(1) Reason why flux is necessary

• By removing the oxide film and any foreign matter on the metal surface, it assists the flo w 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.

– 11 –

(2) Characteristics required for flux

Nitrogen gas

cylinder

Pipe

Flow meter

Stop valve

From Nitrogen cylinder

Nitrogen gas

Rubber plug

• 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 br azing 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 braz-

ing filler/flux

2-5-3. 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 m3/Hr or 0.02 MPa (0.2kgf/cm2) 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.

Copper - Copper

(1) Do not enter flux into the refrigeration cycle. (2) When chlorine contained in the flux remains

(3) When adding water to the flux, use water

(4) Remove the flux after brazing.

Piping

material

Used brazing Used

filler flux

Phosphor copper Do not use

Copper - Iron

Iron - Iron

Silver Paste flux Silver Vapor flux

within the pipe, the lubricating oil deteriorates. Therefore, use a flux which does not contain chlorine.

which does not contain chlorine (e.g. distilled water or ion-exchange water).

Fig. 2-5-1 Prevention of oxidation during brazing

– 12 –

3-1. Indoor Unit

RAS-10JKCVP, RAS-13JKCVP

3. CONSTRUCTION VIEWS

Front panel

760

Knockout system

Indoor air suction port

Suction grille

Plasma air purifying unit

54.5

Air filter

Indoor heat exchanger

790 208

Air ionizer

54.5

790

Installation plate hanging section

607

Knockout system

46164

250

(Outside length: 0.54m)

(Minimum

distance to wall)

140 or more

Drain hose

Installation plate hanging section

10 10

Lower part hanging section

91 304 304

Hanging section

Center line of main unit

Center line of installation plate

290

608 9191 450

288

(Minimum distance to ceiling)

67 or more

Outline of installation plate

Auxiliary hose (Outside length: 0.45m) Flare Ø6.35

Auxiliary hose (Outside length: 0.36m) Flare Ø9.52

Stud bolt hole For Ø6

10 10

140 or more

Stud bolt hole For Ø8 to Ø10

(Minimum distance to wall)

790

– 13 –

3-2. Outdoor Unit

RAS-10JACVP, RAS-13JACVP

Hanger

A leg part

310

296

(ø6 hole pitch)

(Anchor bolt long hole pitch)

B leg part

Ø4.5 embossing (Ø4STS used) (For sunshade roof attaching)

14749,5

540

548

270

Fan guard

600

Ø25 drain hole

115

Ø11 x 17U-shape hole (For Ø8-Ø10 anchor bolt)

8-Ø6 hole (For fixing outdoor unit)

Ø11 x 17 long hole

(For Ø8-Ø10 anchor bolt)

115.5

Valve cover

Charging port

157

Connecting pipe port

(Pipe dia.Ø6.35)

Connecting pipe port

(Pipe dia.Ø9.52)

4 x Ø11 x 17U-shape hole (For Ø8-Ø10 anchor bolt)

Intake

100 or

310

200 or more

Mounting dimensions of anchor bolt

600

50 or

Intake

Outside line of product

Outlet

780 61

view

250 or more

(Minimum distance from wall)

4 x Ø11 × 17 long hole (For Ø8-Ø10 anchor bolt)

332

Earth terminal

Detailed A leg part

50 36

310

296

R5.5

310

296

36 50

Detailed B leg part

600

2-Ø6 hole

600

R15

Outside line of product

R15

R5.5

– 14 –

4-1. Outdoor Unit

RAS-10JACVP, RAS-13JACVP

Q200

IGBT MODULE

BLU

P17

COMPRESSOR

FAN MOTOR

P18

P23

P22

P21

BLK

WHI

RED

33221

CN300

RED

WHI

BLK

YEL

PNK

GRY

CN301

IGBT : Insulated Gate Bipolar Transistor

BYBXEWBWEVBVEU

P.C. BOARD

(MCC-813)

Q300

1 2 3

1 2 3 4 5

4-2. Indoor Unit

RAS-10JKCVP, RAS-13JKCVP

BLK

1 2 3 4 1 2 3 4

RED

BRW

1 2 3 4 1 2 3 4

CN33 (WHI)

9 8 7 6 5 4 3 2

MAIN P.C. BOARD

(MCC-891)

BLK BLK

HEAT EXCHANGER

SENSOR (TC)

BLK BLK

THERMO SENSOR

(TA)

CN100

(WHI)

BLU

Wireless Unit Assembly

MCC-900

WHI

CN01 (BLU)

121

CN03 (WHI)

121

CN13 (WHI)

9 8 7 6 5 4 3 2 1

4. WIRING DIAGRAM

DB01

CONVERTER MODULE

BRW

P19P20

P14

BLK

1 2 3 4 5 6

FUSE

F01

AC 250V

T3.15A

ELECTRONIC ST ARTER

F04 FUSE T3.15A

P13 P12 P11

PUR YEL

1 2 3 4 5

High-voltage

Power supply

Ion electrode

CN08

21 43

Air purifier

TNR

GEA

C12 C13 C14

Electrode

FILTER

ORN

POWER RELA Y

INDOOR

TERMINAL

BLOCK

CN22

LINE

REACTOR

P02 WHI

BLK WHI

3 1

CN23

DB01

221

P03 ORN

RED

CN500

121

P07P08P09P10

P06

SURGE ABSORBER

VARISTOR

F01

FUSE

T25A

P01 BLK

NL32

POWER SUPPLY 220-240V/50Hz 220V/60Hz

Heat

exchanger

GRN & YEL

CN21

CN34

DC5V

DC12V

POWER SUPPLY

THERMOSTAT FOR COMPRESSOR

CN601

11 2 2 33

CN602

121

CN603

11 2 2 33

BLK

WHI

YEL

ORN

BLU

44 55 66

CN703

PMV

RED GRY

Identification

RED WHI BLK BLU BRW ORN PUR YEL GRY PNK GRN& YEL

BRW

121

RED

BLK

WHI

YEL

BLU

WHI

YEL

LOUVER MOTOR

BLU

(RED)

CN10 (WHI)

CN07 (WHI)

CIRCUIT

PULSE MODULATING VALVE

Color

RED

WHITE

BLACK

BLUE

BROWN

ORANGE

PURPUL

YELLOW

GRAY

PINK

GREEN&

YELLOW

Micro SW

FAN MOTOR

DC MOTOR

– 15 –

5. SPECIFICATIONS OF ELECTRICAL PARTS

5-1. Indoor Unit

RAS-10JKCVP, RAS-13JKCVP

No.

Fan motor (for indoor)

Room temp. sensor

(TA-sensor)

Heat exchanger temp. sensor

(TC-sensor)

Louver motor

Parts name

5-2. Outdoor Unit

RAS-10JACVP, RAS-13JACVP

No.

Reactor

Outside fan motor

Suction temp. sensor

(TS sensor)

Parts name

Type

MF-280-30-1

( – )

MP24GA

Model name

CH-57

ICF-140-43-1

(Inverter attached)

Specifications

DC280–340V, 30W

10kΩ at 25°C

Output (Rated) 1W, 16poles, 1phase DC12V

Rating

L=10mH, 16A

DC140V, 43W

10kΩ (25°C)

Discharge temp. sensor

(TD sensor)

Outside air temp. sensor

(TO sensor)

Terminal block (6P)

Compressor

Compressor thermo.

Coil for PMV

(Inverter attached)

——

DA91A1F-45F

US-622KXTMQO-SS

C12A

62kΩ (20°C)

10kΩ (25°C)

20A, AC250V

3-phases 4-poles 750W

OFF: 125 ± 4°C, ON: 90 ± 5° C

DC12V

– 16 –

6. REFRIGERANT CYCLE DIAGRAM

6-1. Refrigerant Cycle Diagram

RAS-10JKCVP/RAS-10JACVP RAS-13JKCVP/RAS-13JACVP

Pressure measurement Gauge attaching port

Vacuum pump connecting port Deoxidized copper pipe

Outer dia. : 9.52mm Thickness : 0.8mm

Muffler

INDOOR UNIT

Cross flow fan

Deoxidized copper pipe Outer dia. : 6.35mm Thickness : 0.8mm

Sectional shape of heat insulator

Compressor DA91A1F-45F

Outdoor heat

exchanger

Indoor heat

exchanger

Split capillary

Ø1.5 x 200

Temp. measurement

Allowable height

Strainer

Pulse modulating valve at liquid side (SEV16RC3)

Max. : 25m Chargeless : 15m Charge : 20g/m (16 to 25m)

difference : 10m

Allowable pipe length

Temp. measurement

Propeller fan

OUTDOOR UNIT

Ø1.5 x 200

NOTE :

Refrigerant amount : 0.9kg

Gas leak check position Refrigerant flow (Cooling)

NOTE :

• The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)

6-2. Operation Data

Temperature

condition (°C)

Indoor Outdoor

27/19 35/–

Model

name RAS-

10JKCVP 13JKCVP

Standard pressure

P (MPa)

0.9 to 1.1

0.8 to 1.0

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

12 to 14 43 to 45 10 to 12 47 to 48

Indoor fan

mode

High High

Outdoor fan

mode

High High

Compressor

revolution

(rps)

45 70

NOTES :

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

(Thermistor themometer)

(2) Connecting piping condition : 5 m

– 17 –

7. CONTROL BLOCK DIAGRAM

7-1. Indoor Unit

RAS-10JKCVP, RAS-13JKCVP

Heat Exchanger Sensor(Tc)

Room Temperature Sensor(Ta)

Infrared Rays Signal Receiver

and Indication

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Converter

(D.C circuit)

Noise Filter

M.C.U

Functions

• 3-minute Delay at Restart for Compressor

• Fan Motor Starting Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

Serial Signal Transmitter/Receiver

Indoor Unit Control Unit

Louver

Motor

Louver Motor Drive Control

Indoor Fan

Motor Control

Indoor

Fan Motor

Air purifier

unit

Micro Switch

From Outdoor Unit

220-240V/50Hz

220V/60Hz

REMOTE CONTROLLER

Serial Signal Communication

(Operation Command and Information)

Remote Controller

Operation (START/STOP) Operation Mode Selection

AUTO, COOL, DRY, FAN only

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECO

Hi-POWER

Infrared Rays, 36.7kHz

– 18 –

Air Purifier

SLEEP

For INDOOR UNIT

220–240 V/50Hz 220 V/60Hz

MICRO-COMPUTER BLOCK DIAGRAM

MCC813 (P.C.B) OUTDOOR UNIT

RAS-10JACVP, RAS-13JACVP

7-2. Outdoor Unit (In verter Assembly)

Indoor unit

send/receive

circuit

M.C.U

• PWM synthesis function

• Input current release control

Discharge

temp. sensor

Outdoor air

temp. sensor

– 19 –

Suction temp.

sensor

• IGBT over-current detect control

• Outdoor fan control

• High power factor correction control

• Inverter output frequency control

• A/D converter function

• P.M.V. control

• Discharge temp. control

• Signal communication to indoor unit

Clock

frequency

16MHz

Converter

(AC DC)

Noise

Filter

High Power

factor Correction

circuit

Input current

sensor

Driver circuit

of P.M.V.

Rotor position

detect circuit

Rotor position

detect circuit

Over current detect circuit

Over current

sensor

Gate drive

circuit

Gate drive

circuit

Inverter

(DC

AC)

Inverter

(DC AC)

Outdoor

Fan motor

Compressor

P.M.V.

P.M.V : Pulse Modulating Valve M.C.U : Micro Control Unit

8. OPERATION DESCRIPTION

8-1. 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 13 to 88 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 modulating valve. (P.M.V) 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 transf er 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.

As the compressor adopts four -pole brushless DC motor, the frequency of the supply power from inverter to compressor is two-times cyc les 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

(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

• P.M.V. control



Operations followed to judgment of serial signal



from indoor side.



• 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 rev olution control

(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 control

• 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

• For these signals ([Operation mode] and

[Compressor rev olution] indoor heat exchanger temperature), the outdoor unit controller monitors the input current to the inverter , and performs the follo wed 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

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

– 20 –

8-2. Operation Description

Item

1. Basic operation

Operation flow and applicable data, etc.

1) Operation control Receiving the user’s operation condition setup, the opera-

tion statuses of indoor/outdoor units are controlled.

Remote controller

Selection

of operation

conditions

ON/OFF

Signal

receiving

Indoor unit

control

Operation

command

Serial signal send/receive

Control contents of remote controller

• ON/OFF (Air conditioner/Air purifier)

• Operation select

(AUTO/COOL/DRY/FAN ONLY)

• Temperature setup

• Air direction

• Swing

• Air volume select

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

• ECO

• ON timer setup

• OFF timer setup

• High power

Indoor unit

Indoor unit control

• Command signal generating function of indoor unit operation

• Calculation function (temperature calculation)

• Activation compensation function of indoor fan

• Timer function

• Indoor heat exchanger

release control

Description

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

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 left.

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, pulse modulating valve.

• Indoor fan motor

• Louver motor

Outdoor unit

Serial signal send/receive

Outdoor unit

control

Outdoor unit control

• Frequency control of inverter output

• Waveform composite function

• Calculation function

(Temperature calculation)

• AD conversion function

• Delay function of compressor reactivation

• Current release function

• GTr over-current preventive function

2) Cooling operation The operations are performed in the following parts by

controls according to cooling conditions.

Operation ON

Indoor unit

control

Sending of

operation

command signal

Outdoor unit

control

Setup of remote controller

Indoor fan motor control Louver control

Compressor revolution control Outdoor fan motor control Pulse modulating valve control

Inverter

1) Receiving the operation ON signal of

2) At the indoor unit side, the indoor fan

3) The outdoor unit controls the

• Compressor

• Outdoor fan motor

• Pulse modulating valve (PMV)

the remote controller, the cooling operation signal starts being transferred for m the indoor controller to the outdoor unit.

is operated according to the contents of “2. Indoor fan motor control” and the louver according to the contents of “9. Louver control”, respectively.

outdoor fan motor, compressor, pulse modulating valve according to the operation signal sent from the indoor unit.

– 21 –

Item

Operation flow and applicable data, etc.

Description

1. Basic operation

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.

Cooling operation

Ts + 1

Monitoring (Fan)

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

controlled by the previous operation mode.

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

4) DRY operation DRY operation is perfor med 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]

L– (W5)

1.0

0.5

(W5+W3) / 2

SL (W3)

Tsc

Fan speed

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.

– 22 –

Item

Operation flow and applicable data, etc.

Description

2. Indoor fan motor control

(This operation controls the fan speed at indoor unit side.) The indoor fan (cross flow fan) is operated by the phase-

control 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

MANUAL

(Fig. 1)

AUTO

Indication Fan speed

L L+ M M+ H

(L + M) / 2

(M + H) / 2

(Fig. 2)

[˚C]

+2.5 +2.0

+1.5 +1.0

+0.5

Tsc

Fan speed AUTO

M+(WB)

L(W6)

*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)

* Symbols

UH : Ultra High H : High M+ : Medium+ M : Medium L+ : Low+ L: Low 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.

Fan speed

level

WF WE WD WC WB WA

W9 W8 W7 W6 W5 W4 W3 W2 W1

COOL

M+

L+

L–

SUL

(Table 1) Indoor fan air flow rate

DRY

L+

L–

SUL

Fan speed

(rpm)

1630 1480 1400 1350 1200 1110 980 830 810 810 780 700 550 400 400

Air flow rate

– 23 –

(m3/h)

684 609 569 544 468 423 358 283 273 273 257 217

142 67 67

RAS-13JKCVPRAS-10JKCVP

Fan speed

(rpm)

1650 1530 1440 1390 1240 1150 1010 860 810 810 780 700 550 400 400

Air flow rate

(m3/h)

694 634 589 564 488 443 373 298 273 273 257 217 142 67 67

Item

Operation flow and applicable data, etc.

Description

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 400

when the motor stopped.

Fan motor ON

3) Fan lock NO

YES

OFF status of

fan motor continues.

Air conditioner

OFF

Alarm

display

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.

4) Motor operates as shown in the table below.

In cooling operation

Compressor speed (rps)

During

ECO mode

When To is abnormal

38˚C

To To < 38˚C To < 15˚C To

38˚C To < 38˚C To < 15˚C

~13.8 ~34.7

f 7 f 4 f 3 f 7 f 5 f 4 f 8 f 8 f 8 f 7 f 5 f 4 f 7 f 7 f 5 f 8 f 8 f 8 f 5 f 5 f 4

Outdoor fan speed (rpm)

Tap

f 1 f 2 f 3 f 4 f 5 f 6 f 7 f 8

RAS-10JACVP

— —

750 750 700 650 390 390

RAS-13JACVP

35.4~ MAX

— —

840 840 700 650 390 390

– 24 –

Item

Operation flow and applicable data, etc.

Description

4. Capacity control

The cooling capacity depending on the load is adjusted. According to difference between the setup value of tempera-

ture and the room temperature, the capacity is adjusted by the compressor revolution.

Remote controller Indoor unit

Set temp. (Ts) Room temp. (Ta)

Ts –Ta

Correction of Hz signal

Detection of electromotive force

of compressor motor winding

Detection of motor speed

and rotor position

Correction value of Hz

signal Operating Hz

Inverter output change

Commutation timing change

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 opera-

tion are same in cooling operation and heating operation

5. Current release control

Change of compressor speed

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.

Outdoor temp.

45˚C 40˚C44˚C 16˚C39˚C 11˚C 15.5˚C

10.5˚C

High

Outdoor temp. To

Setup of current release point

Reduce compressor speed

Current decrease

Cooling current release value

5.62A

9.00A

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.

– 25 –

Item

Operation flow and applicable data, etc.

Description

6. Release protective control by temperature of indoor heat exchanger

7. Louver control

1) Louver position

(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.

Usual cooling capacity control

When the value is in Q zone, the

compressor speed is kept.

Indoor heat exchanger temperature

7˚C

6˚C

5˚C

Reduction of compressor speed

This function controls the air direction of the indoor unit.

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

• 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 memory position)

The angle of the louver is indicated as the horizontal angle is 0°. When the louver closes fully, it directs approx. 49° upward.

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)

2) Air direction adjustment

1) Louver position in cooling operation

Cooling operation/

AUTO (COOL)/Dry

Initial setting of “Cooling storage position” Louver : Directs downward (9˚)

Horizontal

blowing

Inclined blowing

Room temp. (Ta) <

Set temp. (Tsc) + 3.5

Initial setting of “Cooling storage position” Louver : Directs downward (9˚)

Air direction

Blowing

downward

Louver angle

Powerful

Room temp. (Ta)

Set temp. (Tsc) + 3.5

“Inclined blowing” Louver : Directs downward (14˚)

Inclined

blowing

Horizontal (0˚)

Horizontal

blowing

Cooling/AUTO

(COOL)/DRY

operation

Cooling memory position

YES NO

YES

Inclined blowing

Room temp. Set temp. +3.5

Powerful

operation

YES

Room temp.

Set temp. +3.5

Cooling

memory

position

• 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 perfor med in width 35° from the limit which the stop position exceeded.

– 26 –

• Swing

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

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