Toshiba RAS-B10N3KV2-E1, RAS-B13N3KV2-E1, RAS-B16N3KV2-E1, RAS-10N3AV2-E1, RAS-13N3AV2-E1 Service Manual

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R410A

SERVICE MANUAL

SPLIT TYPE

Indoor Unit Outdoor Unit

FILE NO. SVM-15006

January

, 201

RAS-

B10N3KV2-E1

RAS-

B13N3KV2-E1

RAS-

B16N3KV2-E1

RAS-

10N3AV2-E1 RAS-13N3AV2-E1 RAS-16N3AV2-E

– 1 –

CONTENTS

1. SAFETY PRECAUTIONS .......................................................................... 2

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

3. REFRIGERANT R410A ............................................................................. 7

4. CONSTRUCTION VIEWS ........................................................................ 17

5. WIRING DIAGRAM .................................................................................. 19

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 21

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 22

8. CONTROL BLOCK DIAGRAM ................................................................ 25

9. OPERATION DESCRIPTION................................................................... 28

10. INSTALLATION PROCEDURE ................................................................ 53

11. HOW TO DIAGNOSE THE TROUBLE...................................................... 67

12. HOW TO REPLACE THE MAIN PARTS................................................... 99

13. EXPLODED VIEWS AND PARTS LIST ................................................. 117

FILE NO. SVM-15006

For general public use

Power supply cord and connecting cable of appliance for outdoor use shall be at least polychloroprene sheathed flexible cord (design H07RN-F) or cord designation 60245 IEC66. (Shall be installed in accordance with national wiring regulations.)

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 membranes, and oils because the pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. As well as the adoption of this new refrigerant, refrigerating machine oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating machine oil does not enter the refrigeration cycle of a new-refrigerant air conditioner. To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging port connecting port connecting sections on the main unit are different from those for the conventional refrigerant, and different size tools are also required. For connecting pipes, use new and clean piping materials with highpressure withstand capabilities, designed for R410A only, and ensure that water or dust does not enter. Moreover, do not use any existing piping as its pressure withstand may be insufficient and may contain impurities.

DANGER

• FOR USE BY QUALIFIED PERSONS ONLY.

• MEANS FOR DISCONNECTION FROM THE SUPPLY HAVING A CONTACT SEPERATION OF AT LEAST 3 mm

IN ALL POLES MUST BE INCORPORATED IN THE FIXED WIRING.

• 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.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY,

ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

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

FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

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

AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATERS, FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY

CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT (R410A) WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLATION WORK,

IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.

• WHEN INSTALLING OR RE-INSTALLING THE AIR CONDITIONER, DO NOT INJECT AIR OR OTHER SUBSTANCES

BESIDES THE DESIGNATED REFRIGERANT "R410A" INTO THE REFRIGERATION CYCLE. IF AIR OR OTHER SUBSTANCES ARE MIXED, AN ABNORMAL PRESSURE CAN OCCUR IN THE REFRIGERATING CYCLEL, AND THIS CAN CAUSE AN INJURY DUE TO A PIPE RUPTURE.

The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. Be sure to read this installation manual carefully before installing. Recommend to the owner to perform maintenance periodically when using over long periods of time. Be sure to follow the precautions provided here to avoid safety risks. The symbols and their meanings are shown below.

DANGER : It indicates that incorrect use of this unit can result in a high possibility of severe injury (*1) or death. WARNING : It indicates that incorrect use of this unit may cause severe injury of death. CAUTION : It indicates that incorrect use of this unit may cause personal injury (*2) or property damage (*3).

*1 : A severe injury refers to blindness, injury, burns (hot or cold), electrical shock, bone fracture, or

poisoning that leaves aftereffects and requires hospitalization or extended out-patient treatment.

*2 : Personal injury means a slight accident, burn, or electrical shock which does not require admission

or repeated hospital treatment.

*3 : Preperty damage means greater damage which affects assets or resources.

FILE NO. SVM-15006

1. SAFETY PRECAUTIONS

– 2 –

WARNING

• Installation work must be requested from the supplying retail dealership or professional vendors. Self-installation may

cause water leakage, electrical shock, or fire as a result of improper installation.

• Specified tools and pipe parts for model R410A are required, and installation work must be done in accordance with

the manual. HFC type refrigerant R410A has 1.6 times more pressure than that of conventional refrigerant (R22). Use the specified pipe parts, and ensure correct installation, otherwise damage and/or injury may be caused. At the same time, water leakage, electrical shock, and fire may occur.

• Be sure to install the unit in a place which can sufficiently bear its weight. If the load bearing of the unit is not enough,

or installation of the unit is improper, the unit may fall and result in injury.

• Electrical work must be performed by a qualified elecrical engineer in accordance with the code governing such

installation work, inernal wiring regulations, and the manual. A dedicated circuit and the rated voltage must be used. Insufficient power supply or improper installation may cause electrical shock or fire.

• Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection, stranded wire, and single-wire

connections are not allowed. Improper connection or fixing may cause a fire.

• Wiring between the indoor unit and outdoor units must be well shaped so that the cover can be firmly placed.

Improper cover installation may cause increased heat, fire, or electrical shock at the terminal area.

• Be sure to use only approved accessories or the specified parts. Failure to do so may cause the unit to fall, water

leakage, fire or electrical shock.

• After the installation work, ensure that there is no leakage of refrigerant gas. If the refrigerant gas leaks out of the

pipe into the room and is heated by fire or something else from a fan heater, stove or gas range, it causes generation of poisonous gas.

• Make sure the equipment is properly earthed. Do not connect the earth wire to a gas pipe, water pipe, lightning

conductor, or telephone earth wire. Improper earth work may be the cause of electrical shock.

• Do not install the unit where flammable gas may leak. It there is any gas leakage or accumulation around the unit,

it can cause a fire.

• Do not select a location for installation where there may be excessive water or humidity, such as a bathroom.

Deterioration of insulation may cause elestrical shock or fire.

• Installation work must be performed following the instructions in this installation manual. Improper installation may

cause water leakage, electrical shock or fire. Check the following items before operating the unit.

- Be sure that the pipe connection is well placed and there are no leaks.

- Check that the service valve is open. If the service valve is closed, it may cause overpressure and result in compressor damage. At the same time, if there is a leak in the connection part, it may cause air suction and overpressure, resulting burst or injury.

• In pump down operations, ensure to perform the following procedures.

- Do not inject air into the refrigeration cycle.

- Be sure to close both service valves and stop the compressor before removing the refrigerant pipe. It removing the refrigerant pipe while the compressor is operating with the service valves opened, it may cause to air absorbed and abnormal high pressure inside the refrigeration cycle and resulting burst or injury.

• Do not modify the power cable, connect the cable midway, or use a multiple outlet extension cable. Doing so may

cause contact failure, insulation failure, or excess current, resulting in fire or electrical shock.

• Do not use any refrigerant different from the one specified for complement or replacement. Otherwise, abnormally

high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body.

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

(Size of wire and wiring method etc.).

• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of

the air conditioner, it may spontaneously combust and start a fire.

• If you detect any damage, do not install the unit. Contact your supplying dealer immediately.

• Never modify this unit by removing any of the safety guards.

• 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.

– 3 –

FILE NO. SVM-15006

CAUTION

• Please read this installation manual carefbefore installing the unit. It contains further important instructions for proper

installation.

• Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet

basement or expose to rain or water.

• After unpacking the unit, examine it carefully for possible damage.

• 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 and discharged air might disturb neighbors.

• This appliance must be connected to the main power supply by means of a circuit breaker depending on the place

where the unit is installed. Failure to do so may cause electrical shock.

• Follow the instructions in this installation manual to arrange the drain pipe for proper drainage from the unit.

Ensure that drained water is discharged. Improper drainage can result in water leakage, causing water damage to furniture.

• Tighten the flare nut with a torque wrench using the prescribed method. Do not apply excess torque. Otherwise, the

nut may crack after a long period of usage and it may cause the leakage of refrigerant.

• Wear gloves (heavy gloves such as cotton gloves) for installation work. Failure to do so may cause personal injury

when handling parts with sharp edges.

• Do not touch the air intake section or the aluminum fins of the outdoor unit. It may cause injury.

• Do not install the outdoor unit in a place which can be a nest for small animals. Small animals could enter and contact

internal electrical parts, causing a failure or fire.

• Request the user to keep the place around the unit tidy and clean.

• Make sure to conduct a trial operation after the installation work, and explain how to use and maintain the unit to the

customer in accordance with the manual. Ask the customer to keep the operation manual along with the installation manual.

– 4 –

FILE NO. SVM-15006

2. SPECIFICATIONS

Unit model Indoor

RAS-B10N3KV2-E1 R

AS-B13N3KV2-E1

Outdoor

RAS-10N3AV2-E1 RAS-13N3

AV2-E1

Cooling capacity (kW) 2.5 3.5 Cooling capacity range (kW) 1.1-3.1

1.1-4.

Heating capacity (kW) 3.2 4.2 Heating capacity range (kW) 0.9-4.8

1.0-5.3

Power supply Electric Indoor Operation mode Cooling Heating Cooling Heating characteristic Running current (A) 0.21-0.19 0.24-0.22 0.21-0.19 0.24-0.22

Power consumption (W) 35 40 35 40 Power factor (%)7 766 76 76

Outdoor Operation mode Cooling Heating Cooling Heating

Running current (A)

.94-2.71

52-3.23

5.03-

4.61

2.31-4.78

Power consumption (W) 563 710

1015

1040

Power factor (%)

87 92 92 91

Starting current (A

)

5.17 COP (Cooling / Heating) Operating Indoor High (Cooling / Heating) (dB-A) 38/39 39/40 noise Medium (Cooling / Heating) (dB-A) 33/34 33/34

Low (Cooling / Heating) (dB-A) 26/28 26/28

Outdoor (Cooling / Heating) (dB-A) 46/47 48/50

Indoor unit Unit model

RAS-B10N3KV2-E

RAS-B13N3KV2-E

Dimension Height (mm) 275 275

Width (mm) 790 790 Depth (mm)

217 217

Net weig

(kg)

10 Fan motor output (W) 20 20 Air flow rate (Cooling / Heating)

min)

8.6/9.5 9.5/10.4

Outdoor unit Unit model

RAS-10N3AV2-E1 RAS-13N3AV

2-E1

Dimension Height (mm) 550 550

Width (mm) 780 780

Depth (mm) 290 290 Net weigh (kg) 33 33 Compressor Motor output (W) 750 750

Type

Twin rotary type with DC-inverter variable speed control to

single rotary type with DC-inverter variable speed control

Model

ASM89D16UFZ

Fan motor output (W) Air flow rate (Cooling / Heating)

(m3 min)

30/30 37.5/37.5 Piping Type Flare connection Flare connection connection Indoor unit Liquid side (mm)

∅ 6.35 ∅ 6.35

Gas side (mm) ∅ 9.52 ∅ 9.52

Outdoor unit Liquid side (mm) ∅ 6.35 ∅ 6.35

Gas side (mm) ∅ 9.52 ∅ 9.52

Maximum length (m) 20 20 Maximum charge-less length (m) 15 15 Maximum height difference (m) 10 10

Refrigerant Name of refrigerant R410A R410A

Weight (kg) 0.80 0.80 Wiring Power supply connection Interconnection Usable temperature range Indoor (Cooling / Heating)

(

21-32/0-28 21-32/0-28

Outdoor (Cooling / Heating)

(oC)

-10-46/-15-24 -10-46/-15-24

Accessory Indoor unit Installation plate 1 1

Wireless remote controller 1 1 batteries 2 2 Remote controller holder 1 1 TOSHIBA IAQ filer (long type) 1 1 Mounting screw

6 ( ∅ 4 x 25L) 6 ( ∅ 4 x 25L)

Pan head wood screw

2 ( ∅ 3.1 x 16L) 2 ( ∅ 3.1 x 16L)

Plasma air purifier - Installation manual 1 1 Owner's manual 1 1

Outdoor unit Drain nipple 1 1

Water proof rubber cap 2 2

* The specification may be subject to change without notice for purpose of improvement.

1Ph

/50Hz/220

-240V , 1Ph/60Hz/220-230V

4.18/4.27

.33/3.89

3 Wires: Includes earth (Outdoor)

4 Wires: Includes earth

– 5 –

2-1. Specification

FILE NO. SVM-15006

– 6 –

Unit model Indoor

RAS-B16N3KV2-E1

Outdoor RAS-16N3AV2-E

Cooling capacity (kW) 4.5 Cooling capacity range (kW) 0.8-5.0 Heating capacity (kW) 5.5 Heating capacity range (kW) 0.9-6.9 Power supply Electric Indoor Operation mode Cooling Heating characteristic Running current (A)

0.21-0.19 0.24-0.22 Power consumption (W) 30 35 Power factor (%)

65 66

Outdoor Operation mode Cooling Heating

Running current (A) 6.33-5.80 6.86-6.28 Power consumption (W)

1365 1485 Power factor (%) 98 98 Starting current (A) 7.10

COP (Cooling / Heating) Operating Indoor High (Cooling / Heating) (dB-A) 45/45 noise Medium (Cooling / Heating) (dB-A) 40/40

Low (Cooling / Heating) (dB-A) 30/31

Outdoor (Cooling / Heating) (dB-A)

49/50

Indoor unit Unit model

RAS-B16N3KV2-E1

Dimension Height (mm)

275 Width (mm) 790 Depth (mm) 225

Net weight (kg) 10 Fan motor output (W) 30 Air flow rate (Cooling / Heating)

min)

11.5/12.3

Outdoor unit Unit model RAS-16N3AV2-E

Dimension Height (mm) 550

Width (mm) 780 Depth (mm) 290

Net weicht (kg) 38 Compressor Motor output (W) 1100

Type Twin rotary type with DC-inverter variable speed control Model DA131S1B-31FZ

Fan motor output (W) Air flow rate (Cooling / Heating)

(m3 min)

36/32 Piping Type Flare connection connection Indoor unit Liquid side (mm)

∅ 6.35

Gas side (mm)

∅12.7

Outdoor unit Liquid side (mm)

∅ 6.35

Gas side (mm)

∅12.7

Maximum length (m) 20 Maximum charge-less length (m) 15 Maximum height difference (m) 10

Refrigerant Name of refrigerant R410A

Weight (kg) 1.10 Wiring Power supply connection Interconnection Usable temperature range Indoor (Cooling / Heating)

(

21-32/0-28

Outdoor (Cooling / Heating)

(oC)

-10-46/-15-24

Accessory Indoor unit Installation plate 1

Wireless remote controller 1 batteries 2 Remote controller holder 1 TOSHIBA IAQ Filter (long type) 1 Mounting screw

6 (∅ 4 x 25L)

Pan head wood screw

2 (∅ 3.1 x 16L)

Plasma air purifier Installation manual 1 Owner's manual 1

Outdoor unit Drain nipple 1

Water proof rubber cap 2

* The specification may be subject to change without notice for purpose of improvement.

3 Wires: Includes earth (Outdoor)

4 Wires: Includes earth

3.23/3.62

1Ph/50Hz/220-240V, 1Ph/60Hz/220V

2-2. Specification

FILE NO. SVM-15006

– 7 –

0 01 20 03 0540 60 07 08 90100110120

Current (A)

Compressor Speed (rps)

0 01 02 03 40 05 06 07 08 90100110120

Current (A)

Compressor Speed (rps)

Conditions Indoor : DB 27oC/WB 19oC Outdoor : DB 35

C Air Flow : High Pipe Length : 5m Voltage : 230V

Conditions Indoor : DB 20oC Outdoor : DB 7

C/WB 6oC Air Flow : High Pipe Length : 5m Voltage : 230V

2-3. Operation Characteristic Curve

RAS-B16N3KV2-E1

RAS-B10N3KV2-E1,

RAS-B13N3KV2-E1

0 02 40 06 80100

Current (A)

Compressor Speed (rps)

Conditions Indoor : DB 27oC/WB 19oC Outdoor : DB 35

C/WB 24oC Indoor Air Flow : High Pipe Length : 5m Voltage : 230V

RAS-B13N3KV2-E1

RAS-B10N3KV2-E1

0 51 5430 06 57 90105120

Current (A)

Compressor Speed (RPS)

RAS-B13N3KV2-E1

Conditions Indoor : DB 20oC/WB 15oC Outdoor : DB 7

C/WB 6oC Indoor Air Flow : High Pipe Length : 5m Voltage : 230V

RAS-B10N3KV2-E1

FILE NO. SVM-15006

2-4.Capacity Variation Ration According to Temperature

100

105

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

Capacity ratio (%)

Outdoor temp. (oC)

100

120

-15 -10 -5 0 5 10

Capacity ratio (%)

Outdoor temp. (oC)

Conditions Indoor : DB 27oC/WB 19oC Outdoor : DB 35

C Air Flow : High Pipe Length : 5m Voltage : 230V

Conditions Indoor : DB 20oC Outdoor : DB 7

C/WB 6oC Air Flow : High Pipe Length : 5m Voltage : 230V

Capacity ratio 100% is 4.5 kW

Capacity ratio 100% is 5.5 kW

– 8 –

RAS-B16N3KV2-E1

RAS-B10N3KV2-E1, RAS-B13N3KV2-E1

0.0

20.0

40.0

60.0

80.0

100.0

120.0

-25 -20 -15 -10 -5 0 5 10

Heating Capacity ratio (%)

Outside Temperature ( ºC)

RAS-B10N3KV2-E1 RAS-B13N3KV2-E1

50.0

55.0

60.0

65.0

70.0

75.0

80.0

85.0

90.0

95.0

100.0

105.0

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

Cooling Capacity ratio (%)

Outside Temperature ( oC)

Conditions Indoor : DB 27oC/WB 19oC Outdoor : DB 35

C/WB 24oC Indoor Air Flow : High Pipe Length : 5m Voltage : 230V

Capacity ratio : 100 %=

2.50kW(RAS-B10N3KV2-E1)

3.50kW(RAS-B13N3KV2-E1)

RAS-B10N3KV2-E1

RAS-B13N3KV2-E1

Conditions Indoor : DB 20oC/WB 15oC Outdoor : DB 7

C/WB 6oC Indoor Air Flow : High Pipe Length : 5m Voltage : 230V

– 9 –

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.

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.

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 le vel, 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.

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 bloc ked 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 availab le on the mark et.

FILE NO. SVM-15006

– 10–

Table 3-2-1 Thicknesses of annealed copper pipes

Nominal diameter

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

Outer diameter (mm)

6.35

9.52

12.70

15.88

Thickness (mm)

R410A R22

0.80 0.80

1.00 1.00

2. Joints

For copper pipes, flare joints or soc ket 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 e xceeds 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 sock et joints are as shown in Table 3-2-2.

Table 3-2-2 Minimum thicknesses of socket joints

Nominal diameter

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

Reference outer diameter of

copper pipe jointed (mm)

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

FILE NO. SVM-15006

– 11 –

ØD

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 “dimen- sion A” by using a gauge for size adjustment.

Fig. 3-2-1 Flare pr ocessing dimensions

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

Nominal

diameter

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

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

A (mm)

Flare tool for R410A

clutch type

0 to 0.5 0 to 0.5 0 to 0.5 0 to 0.5

Conventional flare tool

Clutch type Wing nut type

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

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

Nominal

diameter

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

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

A (mm)

Flare tool for R22

clutch type

0 to 0.5 0 to 0.5 0 to 0.5 0 to 0.5

Conventional flare tool

Clutch type Wing nut type

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

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

Nominal

diameter

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

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

Dimension (mm)

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

Flare nut width

(mm)

17 22 26 29

FILE NO. SVM-15006

– 12 –

43˚ to 45˚

45˚ to 46˚

B A

Table 3-2-6 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

Dimension (mm)

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

Flare nut width

(mm)

17 22 24 27 36

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 tighten-

ing torque, comply with values designated by man ufacturers. Table 3-2-7 shows reference values.

NOTE :

When applying oil to the flare surface, be sure to use oil designated b y the man ufacturer. If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

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

Nominal

diameter

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

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)

FILE NO. SVM-15006

– 13 –

3-3. Tools

3-3-1. Required T ools

The service port diameter of packed v alve 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 exclusiv e 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

No.

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

R410A

air-water heat pump installation

Existence of new equipment for R410A

Yes

Yes Yes Yes

Yes

(Note 2)

Whether conventional equipment can be used

*(Note 1)

× ×

× × ×

× ×

Conventional air-water heat pump installation

Whether new equipment can be used with conventional refrigerant

*(Note 1)

× ×

(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

FILE NO. SVM-15006

– 14 –

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

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

(For refrigerant charging, see the figure below.)

Connect the charge hose to the vacuum pump adapter.

Open fully both packed valves at liquid and gas sides.

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.

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.

(Indoor unit)

(Outdoor unit)

Opened

Refrigerant cylinder

(with siphon)

Check valve

Open/close valve for charging

Electronic balance for refrigerant charging

Opened

Closed

Service port

3-4. Recharging of Refrigerant

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

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.

Fig. 3-4-1 Configuration of refrigerant charging

FILE NO. SVM-15006

– 15 –

Gauge manifold

[ Cylinder with siphon ] [ Cylinder without siphon ]

OUTDOOR unit

Gauge manifold

OUTDOOR unit

Refrigerant

cylinder

Electronic

balance

Electronic

balance

Siphon

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.

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.

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.

3-5-2. Flux

1. Reason why flux is necessary

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

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

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

Fig. 3-4-2

FILE NO. SVM-15006

Refrigerant

cylinder

– 16 –

Nitrogen gas

cylinder

Pipe

Flow meter

Stop valve

From Nitrogen cylinder

Nitrogen gas

Rubber plug

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature.

• Due to a wide effective temperature r ange, 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 o xide 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

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.

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 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.

Fig. 3-5-1 Prevention of oxidation during brazing

Piping material

Copper - Copper

Copper - Iron

Iron - Iron

Used brazing filler

Phosphor copper

Silver Silver

Used flux

Do not use

Paste flux Vapor flux

FILE NO. SVM-15006

4. CONSTRUCTION VIEWS

4-1. Indoor Unit

– 17 –

190

160.5 160.5 150

215

235

215

275

84.5

84.5 150 84.5

Installation plate outline

Hanger

Center line

Hanger

621

Drain hose (0.40m)

Connecting pipe (0.40m)

(Flare 6.35mm)

480

Installation plate hanger

116

170 or more

65 or more

Minimum distance

to wall

Minimum

distance

to wall

Minimum

distance

to ceiling

Connecting pipe (0.35m) (for 10 series : Flare 9.52mm) (for 13 series : Flare 12.7mm)

194

Air filter

Heat exchanger

790

Front panel

217

Wireless remote controller

Remote controller holder

17.5

149

172

– 18 –

4-2. Outdoor Unit

320

306

Z View

600

A detail Drawing (Back leg)

320

306

25 Drain outlet

11 x 14

Hole

(For 8 -

10 anchor bolt)

B Detail Drawing (Front leg)

FAN-GUARD

COVER-PV

Liquid side (Flare 6.35)

Flare Ø 9.52:10,13k)

Gas side (

Service port

2 - ∅11 x 14 Long holes (For ∅8 - ∅10 anchor bolt)

Installation dimension

Air outlel

100 or more

600 or more

Air intlel

6 hole

11x14 hole

320

R5.5

108 125

137

600

320

9060090

275

290

550

436

320

342

2 - R5-5 x 17L Ushape

(For ∅ 8 - ∅10 anchor bolt)

FILE NO. SVM-15006

(Flare Ø 12.7:16k)

–

19 –

FILE NO. SVM-15006

5. WIRING DIAGRAM

CN62

CN63

DB01

ORN

21 NL

F01 FUSE 25A

P03

C07

ABSORBER

SURGE

5 4 3 2 1

COMPRESSOR

BLK

WHI

RED

1 2

P09

P10 P11

TEMP. SENSOR)

(DISCHARGE PIPE

TEMP. SENSOR)

(OUTDOOR

3 2

TEMP. SENSOR)

(SUCTION PIPE

2 1

PMV

5 4 3 2 1

IPM module

VARISTOR

COIL FOR 4WAY VALVE

F02

FUSE

3.15A

(From Main Line)

C08

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1 RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

– 20 –

FILE NO. SVM-15006

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

P22

Compressor

P. C. Board

MCC-5009

RED WHI

BLK

P04 P05 P06

P25

YEL

P24

R221

Q200 ~ 205 IGBT

Q300 ~ 305 MOS-FET

CN300

CN700

CN603

CN602

CN601

CN600

Suction pipe

Temp. Sensor

(TS)

Fan Motor

Pulse Motor Valve

1 2 3

1 2

P11

P08

P32

PUR

P33 P30 BLK

CN701 P07

ORN

BLK

WHI

P03

P10

P02

P31

Q404

BLK WHI RED

3 2 1

6 5 4

6 5

4 3 3 2 2 1 1

3 2 1

P23

YEL

P34

P35 L03

L01

Varistor

Surge

Absorber

F01 Fuse 250V ~, T25A

Power Relay

Relay

DB01

DB02

C12 C14

C13

YEL

P21

BRW

P20

R220

R219

PMV

Discharge pipe

Temp. Sensor

(TD)

3 2 1

Condenser pipe

Temp. Sensor

(TE)

212

Outdoor

Temp. Sensor

(TO)

212

R321

R320

R319

P19

P18

Reactor

Coil for

4-way Valve

ORN

+ + +

121

112

11223

F03 Fuse 250V ~, T3.15A

1 2 3 L N

Power Supply (From Main Line)

6-1. Indoor Unit

6-2. Outdoor Unit

No.

Parts name Type Specifications

RPG-240-25A

AC 240V, 20W

2 Room temp. sensor (TA-sensor) ( - ) 10kΩ at 25°C 3 Heat exchanger temp. sensor (TC-sensor) ( - ) 10kΩ at 25°C 4 Louver motor

24BYJ48-HTP

Output (Rated) 1W, 16 poles, DC12V

No. Parts name Type Specifications

L = 19mH, 10A

2 Outdoor fan motor ICF-140-43-4R DC140V, 43W 3 Suction temp. sensor (TS sensor) (Inverter attached) 10kΩ (25°C) 4 Discharge temp. sensor (TD sensor) (Inverter attached) 62kΩ (20°C) 5 Outside air temp. sensor (TO sensor) (Inverter attached) 10kΩ (25°C) 6 Heat exchanger temp. sensor (TE sensor) (Inverter attached) 10kΩ (25°C)

Reactor

Fan motor

(RAS-B10N3KV2-E1, RAS-B13N3KV2-E1)

20A, AC250V

ASM89D16UEZ

CAM-MD12TCTH-5

SQA2522G-000352

3-phases 4-poles 750W

DC12V AC220-240V

Coil for 4-way valve

Coil for PMV

Compressor

Terminal block (5P)7

CH-69

6. SPECIFICATIONS OF ELECTRICAL PARTS

FILE NO. SVM-15006

– 21 –

JX0-5B

(RAS-B16N3KV2-E1)

DC 340V, 30W

MF-340-30-3

CH-57

L = 10mH, 16A

10, 13k

16k

DA131S1B-31FZ

3-phases 4-poles 1100W

10, 13k

16k

STF-H01AJ1872A1

AC220-240V

10, 13k

16k

FILE NO. SVM-15006

– 22 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1

RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

NOTE :

• The maximum pipe length of this air conditioner is 20 m. When the pipe length exceeds 15m, the additional

Deoxidized copper pipe Outer dia. : 9.52mm Thickness : 0.8mm

NOTE :

Gas leak check position Refrigerant flow (Cooling) Refrigerant flow (Heating)

INDOOR UNIT

Temp. measurement

Indoor heat

exchanger

Cross flow fan

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

Sectional shape of heat insulator

Allowable height

difference : 10m

Allowable pipe length

Pressure measurement Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse Modulating valve at liquid side

4-way valve

Compressor ASM89D16UFZ

Outdoor heat

exchanger

Temp. measurement

Propeller fan

Refrigerant amount : 0.80kg

OUTDOOR UNIT

Muffler

Min. : 2m Chargeless : 15m

Strainer

Max. : 20m

Charge : 20g/m (16 to 20m)

charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

FILE NO. SVM-15006

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

– 23 –

NOTE :

•

Deoxidized copper pipe

Outer dia. : 12.7mm(16)

Thickness : 0.8mm

NOTE :

Gas leak check position Refrigerant flow (Cooling) Refrigerant flow (Heating)

Temp. measurement

INDOOR UNIT

Indoor heat

exchanger

Cross flow fan

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

Sectional shape of heat insulator

Allowable height

difference : 10m

Allowable pipe length

P Pressure measurement Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse Modulating valve at liquid side

Ø1.2 x 80 Ø1.2 x 80

4-way valve

Compressor DA131S1B-31FZ

Outdoor heat

exchanger

Split capillary

Temp. measurement

Refrigerant amount : 1.10kg

Propeller fan

OUTDOOR UNIT

Muffler

The maximum pipe length of this air conditioner is 15 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. 100g)

Max. : 20m

Min. : 2m Chargeless : 15m

Charge : 20g/m (16 to 20m)

TCJ

–

24 –

FILE NO. SVM-15006

7-2. Operation Data

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

Model name Standard Indoor Outdoor Compressor

RAS- pressure fan mode fan mode revolution

Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps)

27/19 35/-

B10N3KV2-E1

0.9 to 1.1 12 to 14 37 to 39 High High 49

0.8 to 1.0 11 to 13 46 to 48 High High 75

condition(°C)

Tempeature Heat exchanger

pipe temp.

Model name Standard Indoor Outdoor Compressor RAS- pressure fan mode fan mode revolution

Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps)

20/- 7/6 2.5 to 2.7 39 to 41 0 to 3 High High 60

2.6 to 2.8 41 to 43 0 to 2 High High 80

condition(°C)

Tempeature Heat exchanger

pipe temp.

B13N3KV2-E1

B10N3KV2-E1 B13N3KV2-E1

B16N3KV2-E1

0.8 to 1.0 11 to 13 40 to 42 High High 71

2.7 to 2.9 43 to 45 0 to 2 High High 72

B16N3KV2-E1

– 25 –

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

FILE NO. SVM-15006

M.C.U.

Indoor Unit Control Unit

Power Supply

(From Outdoor Unit)

Serial Signal Communication

(Operation Command and Information)

Serial Signal Transmitter/Receiver

Converter

(D.C circuit)

Noise Filter

Indoor

Fan Motor

Louver

Motor

Louver Motor Drive Control

Indoor Fan

Motor Control

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Infrared Rays, 36.7kHz

Remote Controller

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

QUIET

Operation Mode Selection

AUTO, COOL, DRY, HEAT

REMOTE CONTROLLER

ECO

Hi-POWER

Heat Exchanger Sensor (Tc)

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver

and Indication

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

Operation [ ]

COMFORT SLEEP

–

26 –

8-2. Outdoor Unit (Inverter Assembly)

220–240V ~50Hz

MICRO-COMPUTER BLOCK DIAGRAM

Driver circuit

of P.M.V.

Heat exchanger

temp.sensor

Suction temp.

sensor

Outdoor air

temp. sensor

Discharge

temp. sensor

Indoor unit

send/receive

circuit

Relay

circuit

Noise

Filter

Converter

(AC → DC)

Clock

frequency

10MHz

High Power

factor Correction

circuit

Input current

sensor

• PWM synthesis function

• Input current release control

•

IPM 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

• 4-way valve control

• Signal communication to indoor unit

P.M.V. : Pulse Motor Valve

M.C.U. : Micro Control Unit

M.C.U

For INDOOR UNIT

4-way

valve

P.M.V.

Inverter

(DC → AC)

Gate drive

circuit

Gate drive

circuit

Inverter

(DC → AC)

Outdoor

Fan motor

Compressor

WP-030 (P.C.B)

OUTDOOR UNIT

Current

detect

Current

detect

FILE N. SVM-15006

220

−

230V ~60Hz

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1

RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

– 27 –

220–240V~ 50Hz

MICRO-COMPUTER BLOCK DIAGRAM

Driver circuit

of P.M.V.

Heat exchanger

temp.sensor

Suction temp.

sensor

Outdoor air

temp. sensor

Discharge

temp. sensor

Indoor unit

send/receive

circuit

Relay

circuit

Noise

Filter

Converter

(AC → DC)

Clock

frequency

4MHz

High Power

factor Correction

circuit

Input current

sensor

• PWM synthesis function

• Input current release control

• 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

• 4-way valve control

• Signal communication to indoor unit

P.M.V. : Pulse Motor Valve

M.C.U. : Micro Control Unit

M.C.U

For INDOOR UNIT

4-way

valve

P.M.V.

Inverter

(DC → AC)

Gate drive

circuit

Gate drive

circuit

Inverter

(DC → AC)

Outdoor

Fan motor

Compressor

MCC5009 (P.C.B) OUTDOOR UNIT

Current

detect

Current

detect

FILE NO. SVM-15006

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

FILE NO. SVM-15006

– 28 –

  

9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air conditioner, which uses AC or DC motor for the indoor for motor and the outdoor fan motor. And the capacityproportional control compressor which can change the motor speed in the range from 11 to 96 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 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.

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

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

• 4-way valve 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 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

• For these signals ([Operation mode] and [Com-

pressor 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 When no signal is received from the outdoor

unit controller, it is assumed as a trouble.

–

29 −

9-2. Operation Description

Basic operation ........................................................................................................... 30

Operation control ................................................................................................... 30

Cooling/Heating operation ..................................................................................... 31

3. AUTO operation

DRY operation........................................................................................................ 31

Indoor fan motor control ............................................................................................. 32

Outdoor fan motor control........................................................................................... 34

Capacity control .......................................................................................................... 35

Current release control ............................................................................................... 35

Release protective control by temperature of indoor heat exchanger........................ 36

Defrost control (Only in heating operation) ................................................................ 37

Louver control ............................................................................................................. 39

Louver position....................................................................................................... 39

Air direction adjustment ......................................................................................... 39

Swing

..................................................................................................................... 39

ECO operation ............................................................................................................ 40

10.

Temporary operation ................................................................................................... 41

11.

12.

Discharge temperature control ...................................................................................... 41

13.

Pulse

Modulating valve (P.M.V.) control ......................................................................... 42

Self-Cleaning function ................................................................................................... 43

14.

15.

Remote-A or B selection ...................................

............................................................ 44

9-3. Auto Restart Function ..

9-3-1. How to Set the A uto Restart Function ...........................................................

............ 47

9-3-2. How to C

ancel the Au to Restar t Function ................................................................. 48

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

........................................................ 48

19.

FIL

TER Indicator ...............................................................................................46

9-4. Remote Control

16.

QUIET

mode ................................................................................................................ 45

COMFORT SLEEP mode ............................................................................................ 4

17.

18.

One-To

uch Comfort ..................................................................................................... 45

Hi-POWER Mode ........................................

................................................................ 46

FILE NO. SVM-15006

..................................................................................................... 31

9-4-3. Display of Remote Control ........................................................................................ 52

9-4-1. Function of Push Putton ....

........................................................................................ 49

9-4-2. Operation of remote control .........................

............................................................. 49

– 30 –

Item

1. Basic operation

Operation flow and applicable data, etc.

1. Operation control

Description

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 Modulating valve.

Remote controller

Indoor unit

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

• OFF timer setup

• Hi-POWER

Indoor unit control

• Command signal generating function of indoor unit operation

•

Calculation function (temper

ature 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

Outdoor unit control

• Frequency control of inverter output

•

Waveform composite function

• Calculation function (Temperature calculation)

• AD conversion function

•

Quic

k heating function

• Delay function of compressor reactivation

• Current release function

• GTr over-current preventive function

•

Defrost operation function

•

Compressor

• Outdoor fan motor

• 4-way valve

•

Pulse Modulating valve (P.M.V.)

Signal receiving

Indoor unit control

Operation command

Serial signal send/receive

Selection of

operation conditions

ON/OFF

Serial signal send/receive

Outdoor unit control

Inverter

• COMFORT SLEEP

• QUIET

• PRESET

• ONE-TOUCH

FILE NO. SVM-15006

− 31−

Operation ON

Setup of remote controller

Indoor fan motor control / Louver control / Operation Hz Control (Requierment)

Indoor unit control

Sending of operation command signal

Outdoor unit control

[ ]

Compressor revolution control / Outdoor fan motor control /

4-way valve control In cooling operation: ON

In heating operation: OFF

Pulse Modulating valve control

Item

1. Basic operation

Operation flow and applicable data, etc.

2. Cooling/Heating operation

Description

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 “9. Louver control”, respectively.

3) The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and 4-way valve according to the operation signal sent from the indoor unit.

3. AUTO operation

Selection of operation mode As shown in the following figure, the operation star ts 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.

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.

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) 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.

Ts + 1

Ts – 1

Cooling operation

Monitoring (Fan)

Heating operation

Tsc

0.5

1.0

[˚C]

Fan speed

L– (W5)

(W5+W3) / 2

SUL (W3)

Operation Hz control (Include limit control)

FILE NO. SVM-15006

–

32 –

Item

2. Indoor fan motor control

Operation flow and applicable data, etc.

(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)

Description

* 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.

(Fig. 1)

(Fig. 2)

(Table 1) Indoor fan air flow rate

+2.5

[˚C]

+2.0 +1.5

+1.0 +0.5

Tsc

a b c d e

M+(WB)

*3 *4 *5

L(W6)

Air volume AUTO

L L+ M M+ H

(L + M) / 2

(M + H) / 2

Indication

Fan speed

Fan speed setup

COOL ON

AUTO

MANUAL

*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)

FILE NO. SVM-15006

RAS-B10N3KV2-E1 RAS-B13N3KV2-E1

Cooling Heating Cooling Heating

Fan speed Air flow rate

(rpm) (m3/h)

Fan speed Air flow rate

(rpm) (m3/h)

Fan speed Air flow rate

(rpm) (m3/h)

Fan speed Air flow rate

(rpm) (m3/h)

WF UH 1120 515 1200 565 1300 627 1300 627

WE UH H 1120 515 1200 565 1300 627 1300 627 WD H M+ UH 1120 515 1100 502 1200 565 1190 558 WC M+ H 1040 465 1000 440 1090 496 1080 490 WB M M+ 1000 440 1000 440 1080 490 1080 490 WA M M 960 415 870 359 980 428 980 428 W9 L+ 900 378 870 359 980 428 980 428 W8 L+ L L+ 860 353 750 284 880 365 870 359 W7 L L- 780 303 700 253 770 297 770 297 W6 L- L 650 222 650 222 770 297 770 297 W5 UL UL L- 620 203 650 222 720 266 720 266 W4 UL 600 191 520 141 690 247 690 247 W3 SUL SUL/SL- 580 179 520 141 670 235 670 235 W2 SUL 540 154 520 141 520 141 520 141 W1 500 129 500 129 500 129 500 129

RAS-B16N3KV2-E1

Cooling Heating

Fan speed Air flow rate

(rpm) (m3/h)

Fan speed Air flow rate

(rpm) (m3/h) WF UH 1510 758 1510 758 WE UH H 1480 730 1510 758 WD H M+ UH 1430 708 1480 730 WC M+ H 1280 615 1430 708 WB M M+ 1280 615 1280 615 WA M M 1150 534 1220 577 W9 L+ 1100 502 1150 534 W8 L+ L L+ 980 428 1000 440 W7 L L- 920 390 980 428 W6 L- L 900 378 920 390 W5 UL UL L- 840 340 900 378 W4 UL 840 340 840 340 W3 SUL SUL/SL- 770 297 770 297 W2 SUL 620 203 620 203 W1 520 141 520 141

Fan speed

level

Fan speed

level

Cool Heat Dry

Mode

Cool Heat Dry

– 33 –

Item

2. Indoor fan motor control

Operation flow and applicable data, etc.

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.

[In starting and in stability]

(Fig. 3)

(Fig. 4)

(Fig. 5)

Cold draft preventive control

(Fig. 6)

Fan spee

AUT

Basic fan contr

* No limitation while fan speed MANUAL mode is in stabilit

* A: When Tsc 24, A is 24, and when Tsc < 24, A is Ts

Tsc: Set valu

[C]

–0.

–1.0

–1.5

–2.0

–2.5

–5.0

5.5

L+ (W9)

M+ (WD)

*1 *2

H (WE

)

H (WE

)

Line-approximate H and S

L with Tc

SUL (W2

)

Stop

46 46

45 45 33

33 33 21 32 32 20

*A+4 *A+4 *A+4

*A-4 *A-4 *A-4

Fan speed MAN

AL in startin

Fan speed AUTO in stabilit

Fan speed AUTO in startin

L L+ M M+ H

(L + M) / 2

(M + H) / 2

Indication Fan speed

Fan speed setup

HEAT

AUTO

YES

MANUAL

TC ≥ 42˚C

Min air flow rate contro

Limited to Min WD tap

*Fan speed=

(

W8) + W

No limi

*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+ (Calculated with linear approximation from M+ and L+)

FAN AUTO

F AN Man ual

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 low er than set temp.

• 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

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.

FILE NO. SVM-15006

– 34 –

Item

3. Outdoor fan motor control

Operation flow and applicable data, etc.

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.

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.

2) Fan speed ≥ 400

when the motor stopped.

Air conditioner ON

(Remote controller)

YES

Indoor unit controller

Fan motor ON

3) Fan lock

OFF status of

fan motor continues.

Motor operates as shown in the table below.

1) Outdoor unit operation

command

(Outdoor fan control)

Air conditioner

OFF

Alarm

display

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

When To is abnormal

Outdoor fan speed (rpm)

200

300

370

440

440 440 440 500

500 550

550 600

600

Tap

w 9 w A w B w C w D w E w F

600 650 600 700 650 700 700 800 700

800

700

850

700

850

Compressor speed (rps)

To > 38°C To > 28°C

To To > 15°C

To > 5.5°C To > 0°C

During

To > 38°C

ECO mode

To < 38°C

~ 13.8 ~ 31.7

32.3 ~ MAX

MIN MAX MIN MAX MIN MAX

f 2 f 3 f A f C f D f F f 2 f 3 f 7 f A f 9 f C f 1 f 3 f 2 f 5 f 4 f 7 f 1 f 1 f 1 f 2 f 2 f 4

f 2 f 3 f B f C f C f D

In cooling operation

Compressor speed (rps)

To > 15°C

To < 15°C To < 5.5°C To < − 5.0°C To > 15°C

During

To < 15°C

ECO mode

To < 5.5°C To < − 5.5°C

When To is abnormal

~16.8 ~47.9

48.5 ~ MAX f 3 f 8 f 9 f 3 f 9 f A f 8 f A f D f B f C f D f 3 f 3 f 6 f 3 f 3 f 8 f 5 f 9 f 9 f 7 f A f B f A f B f D

In Heating operation

f 2 f 3 f C f D f E f F

< 0

°C f 0 f 0 f 0 f 1 f 1 f 2

f D f F f D f F f F

f 2 f 3 f 2 f 3 f B f C

f D

RAS-10N3AV2-E1

w 0

FILE NO. SVM-15006

RAS-13N3AV2-E1 RAS-13N3AV2-E1

Tap

RAS-10N3AV2-E1

200 300 370 440 440 500 550 600

RAS-16N3AV2-E

650 700 700 800 800 800 850

RAS-16N3AV2-E

– 35 –

Item

4. Capacity control

Operation flow and applicable data, etc.

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.

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

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.

5. Current release control

Set temp. (Ts)

Room temp. (Ta)

Correction of Hz signal

Outdoor temp. To

Setup of current release point

Capacity control continues.

Detection of electromotive force

of compressor motor winding

Detection of motor speed and rotor position

verter output change

Commutation timing change

Change of compressor speed

Remote controller Indoor unit

Ts –Ta

Current decrease

Correction value of Hz signal ≤ Operating Hz

Outdoor unit inverter main

circuit control current

High

Low

Reduce compressor speed

Operating current ≤

Setup value

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.

FILE NO. SVM-15006

Outdoor temp.

RAS-10N3AV2-E1

RAS-13N3AV2-E1

45°C

5.1A 5.1A 7.2A 8.77A

40°C 44°C

5.7A 5.7A

16°C 39°C

4.5A 7.3A

11°C 15.5°C

10.5°C

7.2A 8.77A

6.7A 8.77A

Cooling current release value

6.07A

7.12A

8.47A

RAS-16N3AV2-E

Heating current release value

RAS-10N3AV2-E1

RAS-13N3AV2-E1

RAS-16N3AV2-E

9.2A

8.6A

– 36 –

Item

6. Release protective control by temperature of indoor heat exchanger

Operation flow and applicable data, etc.

(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.

Description

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)

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)

(Prevent-overpressure control for refrigerating cycle) In heating operation, the sensor of indoor heat ex-

changer detects condensation temperature and controls the compressor speed so that temperature of the heat exchanger does not exceed the specified value.

7˚C

6˚C

5˚C

55˚C

52˚C

48˚C

Usual cooling capacity control

Reduction of compressor speed

Indoor heat exchanger temperature

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

Reduction of compressor speed

Usual heating capacity control

Indoor heat exchanger temperature

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

FILE NO. SVM-15006

–

37 –

Item

Operation flow and applicable data, etc.

Description

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.

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)

FILE NO. SVM-15006

0 10 15 90

[min.]

3529

∗

TE [˚C]

–2

–5

–10

–25

zone

A zone

zoneB zone

zoneC zone

Start of heating operation

∗ The minimum TE value and To value between 10 and 15 minutes after heating operation has

started are stored in memory as TE0 and To0, respectively.

A zone B zone C zone D zone

TE0-TE³3°C & SH-SH0£2 (TE0-TE)-(TO0-TO)³3°C & SH-SH0£2

TE≤ –25°C & SH-SH0£2

More than 90 minutes accumulated heating operation time condition TE£ -2°C

Table 1

In normal To In abnormal To

TE0-TE³2°C & SH-SH0£2 (TE0-TE)-(TO0-TO)³2°C & SH-SH0£2

1) Stop operation of the compressor for approx. 40 seconds.

2) Invert (ON) 4-way valve approx. 30 seconds after stop of the compressor.

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

• Defrost operation in A to C zones

1) Stop operation of the compressor for 40 seconds.

2) Invert (OFF) 4-way valve 40 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.

• Returning conditions from defrost

operation to heating operation

1) Temperature of outdoor heat exchanger rises to +8°C or higher for 3 seconds.

2) Temperature of outdoor heat exchanger is kept at +7°C or higher for 60 seconds.

3) Defrost operation continues for 10 minutes.

D zD zoneone

RAS-B10N3KV2-E1, RAS-B13N3KV2-E1

– 38 –

Item

Operation flow and applicable data, etc.

Description

7. Defrost control (Only in heating operation)

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

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 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.

• 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.

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.

Table 1

* The minimum value of Te sensor 10 to 15 minutes

after start of operation is stored in memory as Te0.

–5˚C

0’ 10’ 15’ 27’40” 34’

–7˚C

–20˚C

Operation time (Minute)

Start of heating operation

Outdoor heat exchanger temperature

C zone

A zone

B zone

A zone

B zone

C zone

When T e0 - 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 T e0 - TE ≥ 3 continued for 2 minutes in C zone, defrost operation starts.

FILE NO. SVM-15006

RAS-B16N3KV2-E1

Horizontal

blowing

Inclined blowing

Blowing

downward

Air direction

Inclined blowing

Horizontal

blowing

Initial setting of "Cooling storage position" Louver : Directs downward (40.9°)

Heating operation/

AUTO (HEAT)

Initial setting of “Heating storage position” Louver : Directs downward (80.5˚)

Item

8. Louver control

1) Louver position

Operation flow and applicable data, etc.

This function controls the air direction of the indoor unit.

Description

• 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.

3) Swing

2) Louver position in heating operation

2) Air direction adjustment

• The position is automatically controlled according to the operation

• The set louver position is stored in memory by the microcomputer,

The angle of the louver is indicated as the louver closes fully is 0°.

1) Louver position in cooling operation

mode (COOL/HEAT).

and the louver returns to the stored position when the next operation is performed. (Cooling/Heating memory position)

• Swing

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

• The louver position can

be arbitrarily set up by pressing [FIX] button.

– 39–

FILE NO. SVM-15006

– 40 –

Item

9. ECO operation

Operation flow and applicable data, etc.

When pressing [ECO] button on the remote controller, a Economic operation is performed.

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

Description

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.

* 12 (DRY max - COOL min) /6 x 5 + COOL min * 11 (DRY max - COOL min) /6 x 4 + COOL min * 10 (DRY max - COOL min) /6 x 3 + COOL min

* 9 (DRY max - COOL min) /6 x 2 + COOL min * 8 (DRY max - COOL min) /6 x 1 + COOL min

30 minutes

→ Time Compressor

speed

0Hz

A zone

aHz

B zone

a to cHz

C zone

cHz

–0.5 –1.0 –1.5 –2.0 –2.5 –3.0 –4.0 –5.0 –6.0 –7.0 –8.0

–9.0 –10.0 –11.0

(Room temp. – Set temp.)

+3.5

+3.0

+2.5

+1.5 +1.0

TSC

-1.0

-2.0

+5.5

1H 2H

11 10

7 6

4 3

OFF

Dry Max

*12 *11

*10

+6.0

+6.5

+5.0 +4.5 +4.0

+2.0

+0.5

-0.5

9 8

Time

Zone

Frequency

FAN

Min Hz

Fan speed depend on presetting and can change every speed.

B10N3KV2-E1

a 20 c 50

1) The control target temperature

increase 0.5ºC per hour up to 2ºC starting from the set temperature

when ECONO has been received.

2) The indoor fan speed is depend on presetting and can change every speed after setting ECO

operation.

2) The indoor fan speed is depend on presetting and can change every speed after setting ECO

operation.

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

FILE NO. SVM-15006

B13N3KV2-E1

B10N3KV2-E1

B13N3KV2-E1 B16N3KV2-E1

20 20

DRY max

Cool min

37 35

B16N3KV2-E1

4452

– 41 –

Item

10. Temporary operation

Operation flow and applicable data, etc.

Pressing [RESET] button starts the temporary operation of [AUTO] operation. When keeping [RESET] button pressed for 10 seconds or more, the temporary [COOL] operation is performed.

Description

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

2) When keeping [RESET] button pressed for 3 seconds or more, Pi, Pi, Pi sound is heard and [AUTO RESTART] control is changed.

3) When keeping [RESET] button pressed for 10 seconds or more, “Pi” sound is heard and the temporary [COOL] operation starts.

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

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

Filter lamp ON

Press RESET button.

Did you press [RESET] button

for 3 seconds or more?

Did you press [RESET] button

for 10 seconds or more?

Switch to [AUTO RESTART] control.

YES

Temporary [AUTO] operation

Temporary [COOL] Operation

FILE NO. SVM-15006

11. Discharge temperature control 1. Purpose

This function detects error on the refrigerating cycle or error on the compressor, and performs protective control.

2. Operation

• Control of the compressor speed

The speed control is performed as described in the left table based upon the discharge temperature.

Td value

117°C 112°C 108°C 105°C

98°C

Control operation

Judges as an error and stops the compressor. Reduce the compressor speed. Reduce slowly compressor speed. Keeps the compressor speed. If the operation is performed with lower speed than one

commanded by the serial signal, speed is slowly raised up to the commanded speed.

Operates with speed commanded by the serial signal.

– 42 –

Item

12. Pulse Modulating valve (P.M.V.)

Operation flow and applicable data, etc.

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 Modulation.

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 and 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.

* SH (Super Heat amount) =

Ts (Temperature of suction pipe of the compressor) – Tc or Te (Heat exchanger temperature at evaporation side)

* PMV: Pulse Modulating Valve

Starting up

Defrost

Initialize

Move to

initial position

PMV open degree control

SH control

release control

Stop by

remote controller

Power OFF

Room temp. sensor

(Ta sensor) control

Compressor ON

control

FILE NO. SVM-15006

– 43 –

Item

13. Self-Cleaning

Operation flow and applicable data, etc.

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.

Unit now performing cooling or dry operation

Press “STOP” button

Only timer indicator lights, and Self Cleaning operation starts

Time set now elapses

Operation stops

function

• During Self-Cleaning operations: The louver opens slightly. The indoor fan operates continuously at a speed of 500 rpm.

Cooling: Auto (cooling) Dry

Heating: Auto (heating) Auto (fan only) Shutdown

Operation time

Up to 10 minutes

No Self-Cleaning operation

performed (0 minutes)

10 mi

nutes

30 mins.

or longer

No Self-Cleaning operation performed

• To stop an ongoing Self-Cleaning operation at any time Press the start/stop button on the remote controller twice during the Self-Cleaning operation. (After pressing the button for the first time, press it for the

Self-Cleaning operation times

second time without delay (within 10 minutes).)

FILE NO. SVM-15006

Description

Self-Cleaning operation time

Item

13. Self-Cleaning function

Operation flow and applicable data, etc.

• Self-Cleaning diagram

Description

14. Remote-A or B selection

Operation display ON OFF OFF

FCU fan

ON ON

OFF

rpm is depend on presetting. (500RPM)

FCU louver OPEN OPEN (12.7º) CLOSE

Timer display

ON or OFF

depend on presetting of timer function. depend on presetting of timer function.

Compressor

ON or OFF

OFF OFF

depend on presetting per room temperature.

CDU fan ON or OFF

OFF OFF

depend on presetting per room temperature.

Cool mode or dry mode

operation more than 10 mins.

Self-Cleaning mode

operate 30 mins.

Automatically turn-off.

Operation time

Turn off by remote controller or

timer-off function.

− 44 −

FILE NO. SVM-15006

1. Purpose

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

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.)

Setting the remote controller

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

Remote Control B Setup.

1) Press RESET button on the indoor unit to turn

2) Point the remote control at the indoor unit.

3) Push and hold CHK • button on the Remote Control by the tip of the pencil. "00" will be shown

the air conditioner ON.

shown on the display.

4) Press MODE • during pushing CHK

• . "B" will

show on the display and "00" will disappear and

the air conditioner will turn OFF. The Remote

Control B is memorized.

Note : 1. Repeat above step to reset Remote Control

to be A.

2. Remote Control A has not "A" display.

3. Default setting of Remote Control from

factory is A.

Item

15. QUIET mode

Operation flow and applicable data, etc.

Description

When the [QUIET] button is pressed, the fan of the indoor unit will be restricted the revolving speed at

−

until the [QUIET] button is pressed once

Remarks :

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

2. Quiet mode is ap

propriate to work with less

cooling load and less heating load condition.

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.

speed L

again (cancel Quiet mode).

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

16. COMFORT

The principles of comfort sleep mode are:

• Quietness for more comfortable. When

• Save energy by changing room temperature

• The air condition can shut down by itself

Remarks:

1. Comfort sleep mode will not operate in dry

automatically.

mode and fan only mode.

automatically.

room temperature reach setting temperature

Cooling mode

• The preset temperature will increase as

show on ECO operation (Item No. 9)

• Press the [COMFORT SLEEP] button to

choose the operating hours. Repeat

pressing to select the hours.

• If the [COMFORT SLEEP] button is pressed

again means cancel comfort sleep mode.

Heating mode

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

choose the operating hours. Repeat

• Press the [COMFORT SLEEP] button to

pressing to setect thehours.

• If the [COMFORT SLEEP] button is pressed

again means cancel comfort sleep mode.

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

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

− 45 −

capacity.

SLEEP mode

FILE NO. SVM-15006

17. One-Touch

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

0 12 25

AUTO

AUTO/L L

Fan Operation

Time after operation starts (min)

Comfort

*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 24ºC.

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

5) Fan is controlled as followings.

Item

Operation flow and applicable data, etc.

Description

18. Hi-POWER

([Hi-POWER] button on the remote controller

is pressed)

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

Mode

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

remote controller does not change.) The indoor unit's fan speed level increase 1 tap

• The preset temperature drops 1ºC

(The value of the preset temperature on the

3. Heating operation

remote controller does not change.) The indoor unit's fan speed level increase 1 tap

• The preset temperature increases 2ºC

(The value of the preset temperature on the

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

19. FILTER When the elapsed time reaches 1000 hours after Indicator

air conditioner operation, the FILTER indicator lights. After cleaning the filters, turn off the FILTER indicator.

How to Turn Off FILTER Indicator

Press [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.

− 46 −

FILE NO. SVM-15006

– 47 –

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓ After approx. three seconds,

The unit beeps three times The green indicator flashes and continues to operate. for 5 seconds.

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

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓ After approx. three seconds,

The unit beeps three times. The green indicator flashes

for 5 seconds.

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

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 ev ent of a power supply being accidentally shut down. The operation will resume without warning three minutes after power is restored.

This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

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. Press the [RESET] button located in the center of the front panel continuously for three seconds. The unit receives the signal and beeps three times. The unit then restarts operating automatically in the event of power supply being accidentally shut down.

• When the unit is standby (Not operating)

• When the unit is in operation

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

FILE NO. SVM-15006

RESET button

– 48 –

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓ After approx. three seconds, The unit beeps three times and continues to operate. If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓ After approx. three seconds, The unit beeps three times. If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

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 three 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)

• When the system is operating

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

FILE NO. SVM-15006

RESET button

– 49 –

FILE NO. SVM-15006

9-4. Remote control

9-4-1. Function of Push Putton

Note:

• The provided Remote Controller is a wireless type, which also can be used as a wire. Please see “How to Connect The Remote Controller for Wired Operation", located in installation instruction, in case of wired control is required.

• In wire operation, remote controller will return to initial condition (PRESET, TIMER and CLOCK will return to initial condition) when user shutdown power supply of Air conditioner.

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 Setup button (SET) 11 Clear button (CLR) 12 Memory and Preset button (PRESET) 13 One-Touch button (ONE-TOUCH) 14 High power button (Hi-POWER) 15 Economy button (ECO) 16 Quiet button (QUIET) 17 Comfort sleep button (COMFORT SLEEP) 18 Filter reset button (FILTER) 19 Set clock button (CLOCK) 20 Check button (CHECK) 21 Reset button (RESET)

SWING

FAN

FIX

QUIET

Hi POWER

ONE-TOUCH

COMFORT

SLEEP

17 20

9-4-2. Operation of remote control

1. ONE-TOUCH

Press 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

Press : Set the desired temperature.

Cooling: Min. 17°C, Heating : Max, 30°C, Fan Only: No temperature indication

ONE-TOUCH

Press : Start the operaton.

2. AUTOMATIC OPERATION

To automatically select cooling, or fan only operation.

MODE

Press : Select A.

3. COOLING / HEATING / FAN ONLY OPERATION

To automatically select cooling, or fan only operation.

MODE

Press : Select Cool , Heat , or Fan only .

2. Press : Set the desired temperature.

FAN

Press : Select AUTO, LOW , LOW+ , MED , MED+ , or HIGH .

– 50 –

FILE NO. SVM-15006

5. Hi-POWER OPERATION

To automatically control room temperature and airflow for faster cooling or heating operation (except in DRY and FAN ONLY mode)

6. ECO OPERATION

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

Note: Cooling operation; the set temperature will increase automatically 0.5 degree/

hour for 4 hours (maximum 2 degrees increase). For heating operation the set temperature will decrease.

7. TEMPORARY OPERATION

In case of the misplaced or discharged remote control

• Pressing the RESET button, the unit can start or stop

without using the remote control.

• Operation mode is set on AUTOMATIC

operation, preset temperature is 24°C and fan operation is automatic speed.

8. TIMER OPERATION

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

( or )

Note:

• Keep the remote control 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.

4. DRY OPERATION (COOLING ONLY)

For dehumidification, a moderate cooling performance is controlled automatically.

MODE

Press : Select Dry .

2. Press : Set the desired temperature.

Hi POWER

Press : Start and stop the operation.

Setting the ON Timer Setting the OFF Timer

Press : Set the desired ON timer.

Press : Set the desired OFF timer.

Press : Set the timer. Press : Set the timer.

Press : Cancel the timer. Press

Press : Set the ON timer.

Press .

Press : Set the OFF timer.

Press

button during the ( or )

mark flashing.

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

Setting Daily Timer

– 51 –

FILE NO. SVM-15006

10. AUTO RESTART OPERATION

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

1. Press and hold the RESET button on the indoor unit for 3 seconds to set the operation. (3 beep sound and OPERATION lamp blink 5 time/sec for 5 secpmds)

• Do not operate ON timer and OFF timer.

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

Setting

operation. (3 beep sound but OPERATION lamp does not blink)

11. QUIET OPERATION

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

12. COMFORT SLEEP OPERATION

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

Note: The cooling operation, the set temperature will increase automatically

0.5 degree/hour for 4 hours (maximum 2 degrees increase). For heating operation, the set temperature will decrease.

9. 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.

displays.

3. PressPress : Operate the preset opera

2. Press and hold for 3 seconds to memorize the setting. The markP

QUIET

Press : Start and stop the operation.

Note: Under certain conditions, QUIET operation may not provide adequate

cooling due to low sound features.

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

– 52 –

FILE NO. SVM-15006

9-4-3. Display of Remote Control

All indications, except for the clock time indicator, are displayed by pressing 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. (A : Auto, : Cool,

: Dry, : Heat, : Fan only)

3. Temperature indicator

Indicates the temperature setting. (17°C to 30°C)

5. 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.

6. Hi-POWER indicator

Indicates when the Hi-POWER operation starts. Press the Hi-POWER button to start and press it

again to stop the operation.

7. (PRESET) indicator

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

The

mark is shown when holding down the

button for more than 3 seconds while the mark is

blinks.

Press another button to turn off the mark.

8. ECO indicator

Indicates when the ECO is in activated. Press the ECO button to start and press it again

to stop operation.

9. 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.)

Indicates when comfort sleep is activaled. Press comfort sleep button to selectter

Indicates when quiet is activated. Press quiet button to start and press it again to stop operation.

Indicates when one touch comfort is activated. Press one-touch button to start the operation.

Indicates when louver is swing. Press swing button to start the swing operation and press it again to stop the swing operation.

10. Comfort sleep

11. Quiet

12. One-Touch

13. Swing

4. FAN speed indicator

Indicates the selected fan speed. AUTO or five fan speed levels

(

LOW , LOW+ , MED , MED

HIGH ) can be shown.

Indicate Auto will be appear with Dry operation

( : Dry) only.

FILE NO. SVM-15006

– 53 –

10. INSTALLATION PROCEDURE

10-1. Installation Diagram of Indoor and Outdoor Units

Before installing the wireless remote controller

• Loading Batteries

1. Remove the battery cover.

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

−

) positions.

3 Batteries

2 Wireless remote controller

Insulate the refrigerant pipes separately with insulation, not together.

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

For the rear left and left piping

Make sure to run the drain hose sloped downward.

Do not allow the drain hose to get slack.

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

Bottom left

Left

6 mm thick heat resisting polyethylene foam

Batteries

Flat head wood screw

Remote control holder

Vinyl tape Apply after carrying out a drainage test.

Wireless remote control

Saddle

Extension drain hose (Not available, provided by installer)

600 mm or more

100 mm or more

600 mm or more

Remark :

• Detail of accessory and installation parts can see in the accessory sheet.

• Some pictures might be different from the actual parts.

Filter

Flat head wood screw

Battery cover

The provided Remote Controller is a wireless type, which also can be used as a wire. Please see “How to Connect The Remote Controller for Wired Operation”, in case of wired control is required.

Shield pipe

Air ﬁ lter

Hook

Installation plate

Hook

65 mm or more

170 mm or more

(Attach to the front panel.)

Wall

Cut the piping hole sloped slightly.

– 54 –

FILE NO. SVM-15006

Fig. 10-2-1

Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind. Use ∅ 8 mm or ∅ 10 mm anchor bolts and nuts.

If it is necessary to drain the defrost water, attach drain nipple 10 and cap water proof 11 to the

bottom plate of the outdoor unit before installing it.

Air inlet

Air outlet

Drain outlet

600 mm

90 mm

125 mm108 mm

28 mm

86 mm

102 mm

320 mm

25 mm

Parts name

Refrigerant piping Liquid side : ∅6.35 mm Gas side : ∅9.52 mm (10,13k)

Pipe insulating material (polyethylene foam, 6 mm thick)

Putty, PVC tapes

Part

Code

Q'ty

One

each

One

each

10-2-1. Optional installation parts

10-2. Installation

: ∅12.7 mm(16k)

– 55 –

10-2-2. Accessory and installation parts

FILE NO. SVM-15006

Part

No.

Part name (Q’ty)

Installation plate x 1

Wireless remote control x 1

Battery x 2

Part name (Q’ty)

Part

No.

Part

No.

Part name (Q’ty)

Flat head wood screw ∅3.1 x 25 s x 1

Others

Name

Owner’s manual

Installation manual

Remote control holder x 1

Toshiba New IAQ filter (L) x 1

Battery-cover x 1

Mounting screw ∅4 x 25 s x 6

Drain nipple* x 1

The part marked with asterisk (*) is packaged with the outdoor unit.

Flat head wood screw ∅3.1 x 16 s x 2

Cap water Proof* x 2

– 56 –

10-2-3. Installation/Servicing T ools

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

Gauge manifold

Charge hose

Electronic balance for refrigerant charging

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

Flare tool (clutch type)

Gauge for projection adjustment

Vacuum pump adapter

Gas leakage detector

Applicable to R22 model

× ×

——

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.

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

Used when flare is made by using conventional flare tool.

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.

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.

FILE NO. SVM-15006

– 57 –

FILE NO. SVM-15006

10-3-2. Cutting a hole and mounting installation

plate

When installing the refrigerant pipes from the rear.

1. After determining the pipe hole position on the

mounting plate (A), drill the pipe hole (∅65 mm) at a slight downward slant to the outdoor side.

NOTE

• When drilling a wall that contains a metal lath, wire

lath or metal plate, be sure to use a pipe hole brim ring sold separately.

Fig. 10-3-3

CAUTION

· Direct sunlight to the indoor unit’s wireless receiver should be avoided.

· The microprocessor in the indoor unit should not be too close to RF noise sources. (For details, see the owner’s manual.)

· A place where there are no obstacles such as a curtain that may block the signal from the indoor unit.

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

· Keep the remote control at least 1 m apart from the nearest TV set or stereo equipment. (This is necessary to prevent image disturbances or noise interference.)

· The location of the remote control should be determined as shown below.

Fig. 10-3-1

(Top view)

Indoor unit

Reception range

Remote control

Indoor unit

Remote control

(Side view)

10-3. Indoor Unit

. .

10-3-1. Installation place

. A place which provides the spaces around the

indoor unit as shown in the diag

ram in part 8-2.

Mounting screw

Pipe hole

Indoor unit

Thread

Weight

 A place where there is no obstacle near the air inlet

and outlet.

170

82.5

Hook

Anchor bolt holes

2 m or more from floor



Hook

A place that allows easy installation of the piping to

the outdoor unit.

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

Hook

The indoor unit shall be installed as top of the indoor unit comes to at least 2 m height. Also, it must be avoided to put anything on the top of the indoor unit.

Installation plate

∅

65 mm

100 mm

Pipe hole

Fig. 10-3-2

The center of the pipe

hole is above he arow

①

⑦

– 58 –

FILE NO. SVM-15006

1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook up the indoor unit.

2. To mount the installation plate on a concrete wall with anchor bolts, utilize the anchor bolt holes as illustrated in the above figure.

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a mounting screw, do not use the anchor bolt hole. Otherwise the unit may fall down and result in personal injury and property damage.

Projection 15 mm or less

Clip anchor (local parts)

5 mm dia. hole

Anchor bolt

Fig. 10-3-4

7 Mounting

screw ∅4 x 25

CAUTION

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

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

• Insert clip anchors for appropriate 7 mounting screws.

NOTE

• Secure four corners and lower parts of the installation plate with 4 to 6 mounting screws to install it.

Installation plate <Keep horizontal direction>

Wiring of the connecting cable can be carried out

10-3-3. Wiring connection

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 (according to the local cords) into the pipe hole on the wall.

4. Take out the connecting cable through the cable slot on the rear panel so that it protrudes about 20 cm from the front.

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

6. Tighten firmly but not over 1.2 N.m (0.12 kgf.m)

7. Secure the connecting cable with the cord clamp.

CAUTION

• Be sure to refer to the wiring system diagram

labeled inside the front panel.

• Check local electrical cords and also any specific

wiring instructions or limitations.

• Wire type : More than H07RN-F or 60245 IEC66

• Use stranded wire only.

NOTE

(1.5 mm2 or more)

Fig. 10-3-5

without removing the front panel.

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

Stripping length of the connecting cable

Screw

Terminal cover

Cord clamp

Terminal block

Earth line

Screw

100 mm

10 mm

90 mm

Connecting cable

about 20 cm

– 59–

FILE NO. SVM-15006

For indoor unit

1. Open the air inlet grille upward.

2. Securely remove two screws at the front panel.

3. Slightly open the iower part of the front panel thon pull the upper part of the front toward you to remove

it from the rear plate as shown on figure

1 .

4. After removing the front panel, remove the display

unit and open the cover as shown on figure 2 and 3 .

5. Arrange the control wire as detail and specification

as shown on figure 4 .

6. Securely connect the control wire to terminal of display unit board as shown on figure 5 (tighten

firmly but not over : 0.12 N·m (0.01 kgf·m).

7. Set the control wire throughout at slot on front cover

of display unit then reassembly display with main casing by reverse process of figure 2 and 3 . Make sure the control wire must not be pressed by front and rear cover of display unit.

8. Set the control wire out from indoor unit same portion as power supply and connecting cable as

shown on figure 6 .

9. Reassembly the indoor unit by reverse process of 1 to 3.

Display board

Display unit

For remote controller

1. Remove cover of remote controller by sliding down and take it out.

2. If batteries are exist, please take them out. The combination of using wire controller and batteries may cause of batteries explosion.

3. Make hole for insert control wire by use screwdriver

break the polyester sheet as shown on figure 7 .

4. Insert control wire from rear side of remote controller

as shown on figure 8 .

5. Fix control wire which arrange as shown on figure 9

and 10 to terminal by provided screws (tighten firmly but not over : 0.25 N·m (0.03 kgf·m).

6. Set control wire through gutter way at rear side of remote controller as shown on figure 11 .

7. Fix provided screw (∅ 3.1 x 16L) on the wall to hang remote controller as shown on figure 12 .

8. Mark and arrange hole for fix below screw (∅ 3.1 x 25L) as shown on figure 12 .

9. Assembly battery cover which provided with accessory bag then use provide screw (∅ 3.1 x 25L) to fix battery

cover together with wall as shown on figure 13 (tighten firmly but not over 0.15 N.m (0.02 kgf.m)).

10. Reassembly cover of remote controller.

Fig. 10-3-6

Fig. 10-3-7

Fig. 10-3-8

Fig. 10-3-9

* Wire size 28-22AWG

or 0.08-0.32 mm

Outer diameter not over 4.7 mm, control wire length 30 m. or less.

70 mm

5 mm

Notch for wire out

Control wire

Terminal

Control wire

Tighten firmly but not over

0.12 N·m (0.01 kgf·m)

Polyester sheet close hole for insert control wire

Control wire

30 mm

10 mm

* Wire size 28-22 AWG (0.08~0.32 mm2)

Outer diameter not over 4.7 mm, control wire length 30 m. or less.

Control wire

Terminal

Tighten ﬁ rmly but not over

0.25 N·m (0.03 kgf·m)

7 8

Indoor unit

Control wire

Remote controller

Air inlet grille

Front panel

– 60 –

FILE NO. SVM-15006

connect remote control and air conditioner.

1. Recommend to use double insulation lead wire for

2. For wire operation, 1 remote control can control only

*Remark :

1 indoor unit.

• When attaching the air inlet grille, the contrary of the

removed operation is performed.

10-3-4. Piping and drain hose installation

* Since dewing results in a machine trouble, make

sure to insulate both the connecting pipes. (Use polyethylene foam as insulating material.)

2. Changing drain hose

For leftward connection, bottom leftward connection and rear leftward connection’s piping, it is necessary to change the drain hose and drain cap.

How to remove the drains cap

Clip drain cap by needle-nose plier, and pull out.

Fig. 10-3-11

Die-cutting

Front panel slit

Changing

drain hose

Piping preparation

Rear right

Rear left

Bottom left

Left

Bottom right

Right

1. Die-cutting front panel slit

Cut out the slit on the left or right side of the front

panal for the left or right connection and the slit on th bonttom left or right side of the front panel for the botto left or right connection with a pair of nippers.

Heat insulator

Drain hose

How to install the drain hose

Firmly insert drain hose connecting part until hitting on a heat insulator and fix it with a screw.

How to remove the drain hose

Fig. 10-3-12

•

The drain hose can be removed by

take off screw, after that twisting and

pulling

•

When

removing the drain hose, be

caref

ul of any sharp edges of steel

plate. The edges can cause injuries.

Fig. 10-3-10

Control wire

Hole for hang remote controller

Remote controller

Screw (∅3.1 x 16L) for hang remote controller

Wall

Screw (∅3.1 x 25L) for ﬁ x battery cover

Remote controller

Battery cover

Screw

Tighten ﬁ rmly but not over 0.15 N·m (0.02 kgf·m)

condition (PRESET, TIMER and CLOCK will return to

3. In wire operation, remote controller will return to initial

initial condition) when user shutdown power supply of air conditioner.

• To install the drain hose, insert the drain hose firmly

until the connection part contacts with heat insulator, and the secure it with original screw.

– 61 –

FILE NO. SVM-15006

How to fix the drains cap

1) Insert hexagonal wrench (4 mm) in a center head.

Fig. 10-13-13

2) Firmly insert drains cap.

Fig. 10-13-14

CAUTION

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

 After scribing slits of the front panel with a knife or a

making-off pin, cut them with a pair of nippers or an equivalent tool.

Fig. 10-13-15

 After scribing slits of the front panel with a knife or a

making-off pin, cut them with a pair of nippers or an equivalent tool.

Fig. 10-13-16

Insert a hexagon wrench (4 mm)

No gap

Slit

Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap. Application causes deterioration and drain leakage of the plug.

4 mm

<Left-hand connection with piping>

Bend the connecting pipe so that it is laid within 43 mm above the wall surface. If the connecting pipe is laid exceeding 43 mm above the wall surface, the indoor unit may unstably be set on the wall. When bending the connecting pipe, make sure to use a spring bender so as not to crush the pipe.

Bend the connection pipe within a radius of 30 mm.

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

Fig. 10-3-17

NOTE

If the pipe is bent incorrectly, the indoor unit may unstably be set 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.

 Carefully arrange pipes so that any pipe does not

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 dewing results in a machine trouble, make

sure to insulate both the connecting pipes. (Use polyethylene foam as insulating material.)

 When bending a pipe, carefully do it, not to crush it.

Installation plate

Auxiliary pipes

Indoor unit

Connecting cable

43 mm

Outward form of indoor unit

R 30 mm (Use polisin (polyethylene) core or the like for bending pipe.)

Use the handle of screwdriver, etc.

270 mm

230 mm

(To the forefront of flare)

Gas side

Liquid side

– 62 –

FILE NO. SVM-15006

10-3-5. Indoor unit fixing

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 up on the installation plate.

3. While pressing 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 up on the installation plate.

Fig. 10-3-18

 For detaching the indoor unit from the installation

plate, pull the indoor unit toward you while pushing its bottom up at the specified parts.

Fig. 10-3-19

Press

(unhook)

Hook

1 Installation

plate

Hook here

PushPush

10-3-6. Drainage

1. Run the drain hose sloped downwards.

NOTE

 Hole should be made at a slight downward slant on

the outdoor side.

Fig. 10-3-20

2. Put water in the drain pan and make sure that the water is drained out of doors.

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

Fig. 10-3-21

CAUTION

Arrange the drain pipe for proper drainage from the unit. Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain water collected from dew, which forms on the back of the indoor unit, to the drain pan. Therefore, do not store the power cord and other parts at a height above the drain guide.

Fig. 10-3-22

Inside the room

Drain hose

Shield pipe

Extension drain hose

Wall

Drain guide

Space for pipes

Do not put the drain hose end in the drainage dit

ch.

Do not form the drain hose into a wavy shape.

Do not put the drain hose end into water.

Do not rise the drain hose.

50 mm or more

– 63 –

90°

Roughness Warp

Obliquity

1. Cut the pipe with a pipe cutter.

Fig. 10-4-3

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

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

10-4-3. Refrigerant piping connection

CAUTION

Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure.

Outer dia. of copper pipe

R410A

∅ 6.35 1.5 to 2.0

∅ 9.52

∅ 12.70

1.5 to 2.0

2.0 to 2.5

Outer dia.

of copper pipe

Rigid Imperial

Æ 6.35 0 to 0.5 1.0 to 1.5 Æ 9.52 0 to 0.5 1.0 to 1.5

Æ 12.70 0 to 0.5 1.0 to 1.5

Die

Pipe

Fig. 10-4-4

Rigid (cluch type)

Imperial (wing nut type)

Half union

Flare nut

Externally threaded side

Internally threaded side

Use a wrench to secure.

Use a torque wrench to secure.

Fig. 10-4-5

10-4. Outdoor Unit

10-4-1. Installation place

• A place which provides the spaces around the outdoor unit as shown in the left 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 your neighbors.

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

• A place free of a leakage of combustible gases.

• A place which does not block a passage.

• When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

CAUTION

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

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

3. Specially in windy area, 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 as from audio equipment, welders, and medical equipment.

Fig. 10-4-2

Strong

wind

• An allowable length and height, please refer

form 1. SPECIFICATIONS.

•

A place where the drain water does not raise any

problem.

FILE NO. SVM-15006

10-4-2. Precautions about installation in

regions with snowfall and cold temperatures

• Do not use the supplied drain nipple for draining water.

Drain the water from all the drain holes directly.

• To protect the outdoor unit from snow accumulation,

• Do not use a double-stacked desing.

install a holding frame, and attach a snow protection

hood and plate.

Snow protection plate

Snow protection hood

At least 50 cm

Snow accumulation line Holding frame

Front

Anchor bolts

Install at least 50 cm above the snow accumulation line.

Fig. 10-4-1

– 64 –

FILE NO. SVM-15006

Flare at outdoor unit side

Fig. 10-4-6

(Unit : N·m)

Flare at indoor unit side

Mark line

Outer dia.

Tightening torque

of copper pipe

Æ6.35 16 to 18 (1.6 to 1.8 kgf·m) Æ9.52 30 to 42 (3.0 to 4.2 kgf·m)

Æ12.70 50 to 62 (5.0 to 6.2 kgf·m)

10-4-4. Evacuating

After the piping has been connected to the indoor unit, you can perform the air purge together at once.

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 manual of the vacuum pump.

Be sure to use a vacuum pump with counter-flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops.

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

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 start 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.) Then confirm that the compound pressure gauge reading is - 101 kPa (- 76 cmHg).

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

6. Open fully the valve stem of the packed valves (both gas and liquid sides).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

Fig. 10-4-8

Packed valve at liquid side

Pressure gauge

Manifold valve

Packed valve at gas side

Vacuum pump adapter for counter-flow prevention

- 101 kPa (- 76 cmHg)

Handle Lo

Compound pressure gauge

Charge hose

Connecting pipe

Vacuum

pump

Charge hose

Handle Hi (Keep full closed)

Service port (Valve core (Setting pin))

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.

CAUTION

Do not apply excess torque.

Otherwise, the nut may crack depending on the

conditions.

1. How to shape the pipes. Shape the pipes along the incused line on the outdoor unit.

Fig. 10-4-7

2. How to fit position of the pipes. Put the edges of the pipes to the place with a distance of 85 mm from the incused line.

(If oil inside of the vacuum pump enters the air conditioner, which use R410A, refrigeration cycle trouble may result.)

– 65 –

FILE NO. SVM-15006

Fig. 10-4-9

• Open the valve stem all the way out, but do not try

to open it beyond the stopper.

Cap Torque

Pipe size of Packed Valve

Size of Hexagon wrench

12.70 mm and smallers

A = 4 mm

15.88 mm

A = 5 mm

• Securely tighten the valve cap with torque in the

following table

Cap Size (H)

Valve Rod Cap

Service Port Cap

H17 - H19

H22 - H30

H14

H17

14~18 N.m

(1.4 to 1.8 kgf·m)

33~42 N.m

(3.3 to 4.2 kgf·m)

8~12 N.m

(0.8 to 1.2 kgf·m)

14~18 N.m

(1.4 to 1.8 kgf·m)

Hexagon wrench is required.

Service Port Cap

Valve Rod Cap

10-4-6. Wiring connection

1. Remove the valve cover from the outdoor unit.

2. Connect power cord to the terminal block , and then connect the connecting cable to the terminals as identified with their respective matched

numbers on the terminal block of indoor and outdoor

unit.

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

Connecting cable Power cord

Terminal block

Earth line

Wrong wiring connection may cause some electrical parts burn out. Be sure to comply with local cords on running the wire from indoor unit to outdoor unit (size of wire and wiring method, etc.). Every wire must be connected firmly. This installation circuit breaker must be used specified

CAUTION

for the power supply line of this air conditioner.

If incorrect or incomplete wiring is carried out, it will

cause an ignition or smoke.

Prepare the power supply for exclusive use with the

air conditioner.

This product can be connected to the mains.

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

Maximum running

Circuit breaker

Connecting cable

Power cord

8.5A

9.2A

current

11.0A

12.0A

Power source

Model

Fig. 10-4-10

50 Hz, 220-240V Single phase 60 Hz, 220-230V Single phase

RAS-B10N3KV2-E1

10-4-5. Electrical work

1. The power supply line must be supplied to outdoor unit.

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

• Wire type : More than H07RN-F or 60245 IEC66

NOTE

(1.5 mm2 or more)

Connection to fixed wiring:

CAUTION

A switch or circuit breaker which disconnects all

3. Prepare the power source for exclusive use with the

poles and has a contact separation of at least 3 mm

air conditioner.

must be incorporated in the fixed wiring. An approved

wiring capacity.

circuit breaker or switches must be used.

Perform wiring works so as to allow a general

H07RN-F or 60245 IEC66 (1.5 mm2 or more)

RAS-B16N3KV2-E1RAS-B13N3KV2-E1

11.0A

14.0A

– 66 –

FILE NO. SVM-15006

10-5. Others

• Check the flare nut connections for the gas leak with a gas leak detector or soap water.

Fig. 10-5-1

10-5-1. Gas leak test

Fig. 10-5-2

10-5-2. Remote Control A-B Selection

• When two indoor units are installed in the same room or

adjacent two rooms, if operating a unit, two units may receive the remote control signal simultaneously and operate. In this case, the operation can be preserved by setting either one remote control to B setting. (Both are set to A setting in factory shipment.)

•

The remote control signal is not received when the

settings of indoor unit and remote control are different.

•

There is no relation between A setting/B setting and A

room/B room when connecting the piping and cables.

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

1. Press [RESET] button on the indoor unit to turn the air conditioner ON.

2. Point the remote control at the indoor unit.

Push and hold [CHECK] button on the Remote Control

by the tip of the pencil. "00" will be shown on the display

4. Press [MODE] during pushing [CHECK]. "B" will show on the display and "00" will disappear and the air conditioner will turn OFF. The Remote Control B

NOTE : 1. Repeat above step to reset Remote

Control to be A.

2. Remote Control A has not "A" display.

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

is memorized [Picture ).

(Picture )

10-5-3. Test operation

To switch the TEST RUN (COOL) mode, press RESET button for 10 sec. (The beeper will make a short beep.)

Fig. 10-5-3

10-5-4. 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.

1. Press and hold the [RESET] button on the indoor unit

3 seconds to set the operation. (3 beep sound and OPERATION lamp blink 5 time/sec for 5 seconds)

2. Press and hold the [RESET] button on the indoor unit for 3 seconds to cancel the operation. (3 beep sound but OPERATION lamp does not blink)

· In case of ON timer or OFF timer are set, AUTO

RESTART OPERATION dose not activate.

Check places for outdoor unit

Check places for indoor unit (Flarenut connection)

RESET button

–

67 –

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.)

Table 11-1

K Precautions when handling the new inverter

CA UTION: HIGH VOLTA GEN

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 will be incorporated starting with this unit.

K The control circuitry has an uninsulated construction.

No.

1 2 3 4 5

Troubleshooting Procedure

First Confirmation Primary Judgment Judgment by Flashing LED of Indoor Unit Self-Diagnosis by Remote Controller Judgment of Trouble by Every Symptom

No.

6 7 8 9

oubleshooting Procedure

Check Code 1C and 1E

How to Diagnose Trouble in Outdoor Unit How to Check Simply the Main Par ts How to Simply Judge Whether Outdoor

Fan Motor is Good or Bad

Fig. 11-1

FILE NO. SVM-15006

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1

RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

IGBT × 6

FET × 6

MCU

Compressor

Fan motor

Shared potential

Driver

Amplifier

Fig. 11-2

–

68 –

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.

Do NOT la y the circuit board assembly flat.

K Precautions when inspecting the control section of the outdoor unit

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 four mounting claws.

As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to v

oltage between + –

term

inals of the C07 (

“WARNING ELECTRIC SHOCK” is indicated.) electrolytic

capacitor (500µF/400V or 760µF/400V) on P.C. board, and then perform discharging.

Fig. 11

-3

Inverter cover

P. C. board (Soldered surface)

Fig. 1

1-4

FILE NO. SVM-15006

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1 RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

–

69 –

Sensor leads

Do NOT la y the circuit board assembly flat.

K Precautions when inspecting the control section of the outdoor unit

NOTE :

< Discharging method >

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

2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to voltage between + – terminals of the C14 (“CAUTION HIGH VOLTAGE” is indicated.) electrolytic capacitor (500µF/400V or 760µF/400V) on P.C. board, and then perform discharging.

Fig. 11-5

Discharging position (Discharging period 10 seconds or more)

Plug of soldering iron

Inverter cover

P. C. board (Soldered surface)

Fig. 11-6

FILE NO. SVM-15006

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

–

70 –

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 main-

taining of air conditioner.

Table 11-1-1

No.

Operation of air conditioner

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

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

In Dry and ECO mode, FAN (air flow) display does not change e ven though FAN (air flow select) button is operated.

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

In AUTO mode, the operation mode is changed.

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.

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)

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.

The air flow indication is fixed to [AUTO].

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.

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

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.

FILE NO. SVM-15006

–

71 –

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 b lock on the indoor unit indication section.

Table 11-3-1

NOTES :

1. The contents of items B and C and a part of item E are displayed when air conditioner operates.

2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.

3. The check codes can be confirmed on the remote controller for servicing.

OPERATION (Green) Flashing display (1 Hz)

OPERATION (Green) TIMER (Yellow) FILTER (Orange) Flashing display (5 Hz)

OPERATION (Green) FILTER (Orange) Flashing display (5 Hz)

OPERATION (Green) TIMER (Yellow) Flashing display (5 Hz)

OPERATION (Green) Flashing display (5 Hz)

Protective circuit operation for indoor P.C. board

Protective circuit operation for connecting cable and serial signal system

Protective circuit operation for outdoor P.C. board

Protective circuit operation for others (including compressor)

Power failure (when power is ON)

Indoor indication

lamp flashes.

Which lamp

does flash?

Item

Check

code

Block display Description for self-diagnosis

FILE NO. SVM-15006

–

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 5Hz and it will beep for 10 seconds (Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.

11-4-1. How to Use Remote Controller in Service Mode

Press [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.

Press [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 :

• 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.

• Press [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.)

Alphanumeric characters are

used for the check codes.

is 5. is 6. is A. is B. is C. is D.

SWING

FAN

FIX

QUIET

Hi POWER

ONE-TOUCH

COMFORT

SLEEP

• • •

Fig. 11-4-1

Press [ ] button to release the service mode.

· The display of the remote controller returns to as it

was before service mode was engaged.

Press [CLR] button. After service finish for clear

service code in memory.

· "7F" is indicated on the display of the remote

control.

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.

Table 11-4-1

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Indoor P.C. TA sensor ; The room Operation Flashes when 1. Check the sensor TA and connection.

board. temperature sensor is continues. error is detected. 2. In case of the sensor and its

short-Circuit or disconnection. connection is normal, check the

P.C. board.

TC sensor ; The heat Operation Flashes when 1. Check the sensor TC and connection.

exchanger temperature continues. error is detected. 2. In case of the sensor and its

sensor of the indoor unit connection is normal, check the

is out of place, disconnection, P.C. board.

short-circuit or migration.

Fan motor of the indoor unit All OFF Flashes when 1. Check the fan motor and connection.

is failure, lock-rotor, short- error is detected. 2. In case of the motor and its

circuit, disconnection, etc. connection is normal, check the

Or its circuit on P.C. board P.C. board.

has problem.

Other trouble on the indoor Depend on Depend on Replace P.C. board.

P.C. board. cause of cause of

failure. failure.

Action and Judgment

FILE NO. SVM-15006

–

73–

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never

and connecting connecting cable or operates error is detected. operate.

cable. miss-wiring. continue. Flashing stop Check connecting cable and correct

2) Operation signal has not Outdoor unit and outdoor unit if defective wiring.

send from the indoor unit stop. start to operate Check 25A fuse of inverter P.C. board.

when operation start. when the return Check 3.15A fuse of inverter

3) Outdoor unit has not signal from the P.C. board.

send return signal to the outdoor unit is Check operation signal of the indoor

indoor unit when operation normal. unit by using diode. Measure voltage

started. 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 If signal is not varied, replace indoor

(hardware, if exist) of the P.C. board.

outdoor unit open 4) The outdoor unit abnormal stop at

circuit of signal. some time.

Signal circuit of indoor If the other check codes are found

P.C. board or outdoor concurrently, check them together.

P.C. board is failure Check protector (hardware) such

in some period. as Hi-Pressure switch,

Thermal-Relay, etc.

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.

Action and Judgment

* 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.

VDC

Time (Min)

34 78

Measured signal voltage by apply diode

3 minutes Delay, start counting from power supply ON or remote OFF.

3 minutes stop

***

Sending signal of the indoor unit when have not return

signal from the outdoor unit.

Voltage variation stop or have not voltage output.

Note : Operation signal of the indoor unit shall be measured in the sending period as

picture below.

FILE NO. SVM-15006

–

74–

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the

board is over limit in short time. error is detected compressor, and operate again.

Inverter P.C. board is 8 times*. 2. If outdoor fan does not operate or

failure, IGBT shortage, etc. operate but stop after some period,

Compressor current is replace the inverter P.C. board.

higher than limitation, 3. If outdoor fan operates normally,

lock rotor, etc. measure 3-Phase output of inverter

P.C. board (150-270VAC) at the

connecting lead wire of compressor.

4. If 3-Phase output is abnormal, replace

inverter P.C.Board.

5. If 3-Phase output is normal, replace

compressor. (lock rotor, etc.)

Compressor position-detect All OFF Flashes after 1. Remove connecting lead wire of the

circuit error or short-circuit error is detected

compressor, and operate again.

between winding of 8 times*. 2. If outdoor fan does not operate or

compressor. operation but stop after some period,

replace the inverter P.C. board.

If outdoor fan operates normally,

measure resistance of compressor

winding. If circuit is shortage, replace

the compressor.

Current-detect circuit of All OFF Flashes after Even if trying to operate again, all

inverter P.C. board error. error is detected operations stop, replace inverter

4 times*. P.C. board.

TE sensor ; The heat All OFF Flashes after 1. Check sensors TE, TS and connection.

exchanger temperature error is detected 2. In case of the sensors and its

sensor of the outdoor unit 4 times*. connection is normal, check the

either TS sensor ; Suction inverter P.C. board.

pipe temperature sensor,

out of place, disconnection

or shortage.

TD sensor ; Discharge pipe All OFF Flashes after 1. Check sensors TD and connection.

temperature sensor is error is detected 2. In case of the sensor and its

disconnection or shortage. 4 times*. connection is normal, check the

inverter P.C. board.

Outdoor fan failure or its All OFF Flashes after 1. Check the motor, measure winding

drive-circuit on the inverter error is detected resistance, shortage or lock rotor.

P.C. board failure. 8 times*. 2. Check the inverter P.C. board.

TO sensor ; The outdoor Operation Record error 1. Check sensors TO and connection.

temperature sensor is continues. after detected 2. In case of the sensor and its

disconnection or shortage. 4 times*. connection is normal, check the

But does not inverter P.C. board.

flash display.

Action and Judgment

FILE NO. SVM-15006

–

75 –

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as

(Relation of voltage, current error is detected packed valve opening, refrigerant

and frequency is abnormal) 8 times*. amount and power supply (rate +

10%,

Overloading operation of both of operation and non operation

compressor caused by condition).

over-charge refrigerant, 2. Check P.M.V. by measure the

P.M.V. failure, etc. resistance of the coil and confirm its

Compressor failure (High operation (sound of initial

current). operation, etc.)

3. Observe any possibility cause which

may affect operation load of

compressor.

4. Operate again. If compressor

operation is failure when 20 seconds

passed (count time from operation

starting of compressor), replace

compressor.

* 4 or 8 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.

After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)

When error count comes 4 or 8 times, record error to check code. But after re-starting operation, if no error is

detected and air conditioner can operate more than 6 minutes, error count is cleared.

The others Return signal of the outdoor Indoor unit Flashes when 1. Check power supply (Rate +

10%)

(including unit has been sent when operates error is detected. 2. If the air conditioner repeat operates

compressor) operation start. But after continue. Flashing stop and stop with interval of approx. 10

that, signal is stop some time. Outdoor unit and outdoor unit to 40 minutes.

Instantaneous power stop. start to operate Check protector (hardware) such

failure. when the return as Hi-Pressure switch,

Some protector signal from the Thermal-Relay, etc.

(hardware) of the outdoor unit is Check refrigerant amount, packed

outdoor unit open normal. valve opening and any possibility

circuit of signal. cause which may affect high

Signal circuit of indoor temperature or high pressure.

P.C. board or outdoor 3. Check operation signal of the indoor

P.C. board is failure unit by using diode. Measure voltage

in some period. 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.

Action and Judgment

FILE NO. SVM-15006

–

76–

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display

flashing error

Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the

Because of missed wiring, error is detected compressor, and operate again.

missed phase or shortage. 8 times*. 2. If outdoor fan does not operate or

operation but stop after some period,

replace the inverter P.C. board.

3. If outdoor fan operates normally,

measure 3-Phase output of inverter

P.C. board (150-270VAC) at the

connecting lead wire of compressor.

4. If 3-Phase output is abnormal, replace

inverter P.C.Board.

5. If 3-Phase output is normal, measure

resistance of compressor winding.

6. If winding is shortage, replace the

compressor.

Discharge temperature All OFF Flashes after 1. Check sensors TD.

exceeded 117

error is detected 2. Check refrigerant amount.

4 times*. 3. Check P.M.V. by measure the

resistance of the coil and confirm its

operation (sound of initial

operation, etc.)

4. Observe any possibility cause which

may affect high temperature of

compressor.

Compressor is high current All OFF Flashes after 1. Check installation conditions such as

though operation Hz is error is detected packed valve opening, refrigerant

decreased to minimum limit. 8 times*. amount and power supply (rate +

10%,

Installation problem. both of operation and non operation

Instantaneous power condition).

failure. 2. Check P.M.V. by measure the

Refrigeration cycle resistance of the coil and confirm its

problem. operation (sound of initial

Compressor break down. operation, etc.)

3. Observe any possibility cause which

may affect high current of compressor.

4. If 1, 2 and 3 are normal, replace

compressor.

* 4 or 8 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.

After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)

When error count comes 4 or 8 times, record error to check code. But after re-starting operation, if no error is

detected and air conditioner can operate more than 6 minutes, error count is cleared.

Action and Judgment

FILE NO. SVM-15006

–

77 –

Compressor failure (High

current).operation, etc.)

11-5. Judgment of Trouble by Every Symptom

11-5-1. Indoor Unit (Including Remote Controller)

(1) Power is not turned on (Does not operate entirely) <Primary check>

1. Is the supply voltage normal?

2. Is the normal voltage provided to the outdoor unit?

3. Is the crossover cable connected properly?

4. Is the fuse (F01) blown?

FILE NO. SVM-15006

•

Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of damage of the motor.

–

78 –

Operation

Measure

Item by symptoms

Check item

Conceivable principle

cause

Parts

(DB01,C08,T01

and IC02)

are defective.

"Troubleshooting for

DC 310V~340V?

Turn off power supply once, and 5 second later, turn it

on again.

Is OPERATION

lamp blinking?

YES

Is it possible to

turn on power

supply by pressing

[ ]

button

on remote

control?

Does

transmission

mark on remote control flash normally,

and is its signal

transmitted

properly?

Remote control is

defective.

Refer to (4)

Remote Control.

Is fuse (F01)

of indoor control

board blown?

Is voltage

(DC 12V or 5V)

indicated on rear of indoor control board

normal?

Microcomputer

is defective.

Replace main

P.C. board.

Refer to

or this problem

is one step short

of power P.C.

Is the

voltage

across C08

mesured

YES

Does

fan motor

connector

between 1

and

short-circuit?

Unit operates

normally.

board block.

Are DC 5V,

DC 12V

supplied

to main

P.C. board?

Turn off breaker

once and turn it

on again after

removing motor.

Regulator IC

(IC02) or T01

are defective

Replace motor

YES

YES YES

Are DC 5V,

or DC 12V

supplied

to main

P.C. board?

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1 RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

–

79 –

FILE NO. SVM-15006

• Be sure to disconnect the motor connector CN31 after shut off the power supply, or it will be a cause of damage of the motor.

(2) Power is not turned on though Indoor P.C. board is replaced <Confirmation procedure>

Turn off power supply once, and 5 second later, turn it on again.

Is OPERATION indicator flashing?

Is it possible to turn on

power supply by pushing

[ ] button

on remote controller?

Is voltage

(DC12V or 5V)

indicated on rear of

indoor control

board normal?

Does transmission mark

on remote controller flash

normally,and is its signal

transmitted properly?

Is DC310–340V

supplied between

1 – 3 of CN31?

Does fan

motor connector

between CN31 1 –

3 short-circuit?

Item by symptoms

Operation

Check Item

Considerable principle cause

Measures

Parts (R01, R02, DB01, C01,

C03, IC11 and T101) are defective.

Remote controller is defective.

Refer to (5) “Troubleshooting for remote controller”.

Parts of a power supply circuit

defective.

Unit operates normally.

Replace main P.C. board

Replace fan motor.

Is fuse (F01)

of indoor control

board blown?

Microcomputer

is defective.

NO NO

YES

YES YES

To item of “Power supply is not turned on”.

Turn on power supply.

Does OPERATION indicator flash?

Is wired correctly to white and

black lead wires of terminal block?

Correct wiring.

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

FILE NO. SVM-15006

–

80 –

(3) Only the indoor motor fan does not operate

1. Is it possible to detect the power supply voltage (AC220–240V) between Q and R 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.)

Replace the fan motor.

YES

NO NO

YES

Does the fan stop in

no operating status?

Control P.C. board is defective.

Start the operation

with low fan setting

in cool operation.

Does AC 120 V

or higher voltage apply

to between red and black

lead of fan motor?

Does the fan rotate?

Change the setting of

cooling to high fan.

Operation

stops

Shut off the power supply.

Motor control circuit failure

(IC

03, Q39 and D01) or 12 V

Switching power supply failure.

Does the cross flow fan rotate normally?

Is the rotation signal (DC+5 V

−

0 V)

output between 2

(gray lead wire)

and 3 (brown lead wire) of the motor

connector (CN11) when rotating the

cross flow fan by hand in no operating

status? (1 pulse/one turn)

Turn on the power supply.

Repair the

bearing of

the fan.

Turn the power supply.

Shut off the

power supply once.

Does connecting

terminal, connecting

cable or power supply

cord completely?

Does not found the short

wire about connecting cable and power cord?

Does the fan speed

become higher?

Replace connecting the

cable (or power cord),

thermal fuse and

terminal block.

Replace the P.C. board.

Normal

Replace the control

P.C. board.

RAS-B10N3KV2-E1 / RAS-10N3AV2-E1 RAS-B13N3KV2-E1 / RAS-13N3AV2-E1

1. Remove the front panel. (Remove 2 screws.)

2. Remove the cover of the fan motor lead wires.

Check AC voltage with CN10 connector while the fan motor is rotating.

NOTE :

• Using a tester, measure the resistance value of each winding coil.

• Use a thin test rod.

of "Judgment of Trouble by Every Symptom".

RPG-240-25A

• Do not disconnect the connector while the fan motor is rotating.

• For P.C. board side, proceed to the item "Only indoor fan does not operate"

2 1

3 2 1

CN10

CN11

P.C. board

WHI

BLK

RED

BRW

GRY YEL

Resistance value

Position (P.C. board)

Between 3 (Black) - 1 (Red) Between 3 (Black) - 5 (White) Between 1 (Red) - 5 (White)

218

± 33 Ω

388

± 58 Ω

606

± 91 Ω

(For AC fan motor)

–

81 –

FILE NO. SVM-15006

Turn off power supply once, and turn it on again.

Start to operate indoor unit in cooling operation at airflow level “LOW”.

Turn off indoor unit and remove connector from motor. Then start to operate indoor unit with remote controller.

Turn off indoor unit and remove connector from motor. Then push [ ] button on remote controller to stop flashing lamp on indoor unit.

Change airflow level to “HIGH”.

Turn off indoor unit

and rotate cross-flow

fan by hand when the

unit is on standby.

At this time, is it possible to

detect DC 1V or more

between

+ and 3 –

of motor connector

(CN31).

Start to operate the

indoor unit in except

heating operation.

At this time, is it possible

to detect DC 1V or more

between

+ and 3 –

of motor connector (CN31)?

(Check this condition

within 15 seconds after

starting unit.)

Start to operate the

indoor unit in except

heating operation.

At this time, is it possible to

detect DC 1V or more between

+ and 3 – of motor

connector (CN31)?

Is it possible to detect

DC 1V or more between

+ and 3 – of

motor connector (CN31).

Is it possible to detect

DC 310–340V between

+ and 3 – of motor

connector (CN31).

(Motor connection condition)

Is it possible to detect DC 15V

between

+ and 3 – of

motor connector (CN31).

Is it possible to detect

DC 15V between

and 3 – of motor

connector (CN31).

Is it possible to

change airflow level

to “HIGH”?

Is it possible to

rotate cross-flow fan by

hand properly?

Does fan motor

continue to operate?

Does indoor

fan operate?

Fan motor operates normally.

Peplace indoor fan motor.

Peplace main P.C. board.

Peplace bearing.

YES

–

82 –

RAS-B16N3KV2-E1 / RAS-16N3AV2-E

–

83 –

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.

DC 1.0V or more

P.C. board is defective.

6 (Blue) 5 (Yellow) 4 (White) 3 (Black) 2 – 1 (Red)

Motor is defective.

Under DC 1.0V

CN31

Yellow

Black

P.C. board

Replace P.C. board. Replace motor.

<Cause>

The IC is built in the indoor f an 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.

1. Remove the front panel. (Remove 2 screws.)

2. Remove the cover of the fan motor lead wires.

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.

FILE NO. SVM-15006

Indoor fan motor automatically starts to rotate by turning on power supply

–

84 –

(4) 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.

FILE NO. SVM-15006

Press [ ]

button.

Is transmission

mark indicated?

Press RESET button

on remote control

with tip of pencil.

Is receiver on

indoor unit exposed

to direct sunlight?

Is there any

thyristor fluorescent

light nearby?

Does indoor unit

operate when

moving remote control

near receiver or

indoor unit?

Press [ ]

button.

Batteries are

exhausted.

Is transmission mark

indicated?

Does indoor unit

beep and operate?

Remote control

is defective.

Does indoor unit

start to operate by

automatic restart

function?

Does radio sound

is affected by

remote control when

a signal is transmitted

at distance of 5 cm

from radio?

P.C. board is

defective.

Keep indoor unit

away from

thyristor

fluorescent light.

Avoid direct

sunlight.

Replace

P.C. board.

Replace

batteries.

Normal

operation

Replace

remote control.

The unit does not beep at all. OPERATION lamp on indoor unit is not indicated.

YES

NO NO

YES

–

85–

Refer to the chart in 11-6.

Gas leak P.M.V. is defective. Miswiring of connecting wires of indoor/outdoor units Clogging of pipe and coming-off of TC sensor

Gas circulation amount is down.

Measure gas pressure.

Gas shortage Gas leak Pipe clogging

Thermo. operation of compressor

Red

White

Terminal block

S5277G

Tester

Terminal block at indoor side

S5277G or equivalent (G or J type) (Diode with rated voltage of 400V or more is acceptable.)

To item of Outdoor unit does not operate.

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

(1) Outdoor unit does not operate

1) Is the voltage between R and S of the indoor terminal block varied? Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-

ing diagram.

NOTE:

• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.

• Be sure to prepare a diode for judgment.

Normal time : Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-7-1.)

Abnormal time : V oltage 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.

2) If the unit stops once, it does not operate until the power will be turned on again.

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)

FILE NO. SVM-15006

–

86–

YES

Gas leakage, disconnection of TS/TC sensors (Check code 02, 1C)

Discharge temp. error, gas leakage (Check code 03, 1E)

1C 1E

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 TEMP button (“Beep” sound is heard if keeping pushed 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.

Valve drive check

Check the operating pressure from service port, and add gas if pressure is low.

Is connecter of coil connected to inverter?

Is coil of the pulse motor valve

(P.M.V.) correctly set?

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.

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).

Set it correctly.

Replace coil valve.

Replace valve.

Add gas.

Is positioning sound of valve (sound hitting to stopper) heard

from valve when the air conditioner starts the operation after turning off power

of the air conditioner once?

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

Check procedure>

FILE NO. SVM-15006

11-7. How to Diagnose Trouble in Outdoor Unit

Turn ON the unit

by remote controller

and wait for 3 min.

Check component

parts of control board

assembly by visual.

(damage, burn,.. Etc.)

Check Power Supply

(Voltage Rate ±10%)

Replace fuse.

YES

Turn OFF power

supply.

Check 25A

fuse (F01)

Remove connector

of compressor.

Replace control board.

Check terminal

Voltage of electrolytic

capacitor are in

(Voltage Rate

Turn ON power

Supply.

±10%) x 1.414?

Replace control board.

(Cooling : 17°C)

•

Connect

discharge

resistance (approx. 100Ω, 40W) or soldering iron (plug) between +, – terminals of the electrolytic capacitor

(500µF or 760µF)

Discharging position (Discharging period 10 seconds or more)

Plug of soldering iron

FILE NO. SVM-15006

– 87 –

– 88 –

YES

Does outdoor fan

operate normally?

Replace control

board.

YES

Compressor

is normal

Check voltage of the

compressor connector

(AC150V-270V)?

Turn ON power

supply.

Turn OFF power

supply.

Replace outdoor

fan motor.

Replace

compressor.

Replace control

board.

Replace

compressor.

YES

Does compresser

operate normally?

Turn OFF power

supply.

Check compressor

winding resistance

correct?

is in rate.

FILE NO. SVM-15006

YES

Remove outdoor fan

connector.

Check winding resistance by

ohmmeter are correct?

Check rotor locking by rotate

with hand. Can it rotate?

–

89 –

11-8. How to Check Simply the Main Parts

11-8-1. 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, 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 :

To check defect of the P.C. board, follow the procedure described below.

FILE NO. SVM-15006

–

90–

Table 11-8-1

No.

Procedure

Turn off the power supply breaker and remove the P.C. board assembly from electronic parts base. Remove the connecting cables from the terminal block.

Remove the connector of the motor and turn on the power supply breaker. If OPERATION indicator flashes (once per second), it is not necessary to check steps (1 to 3) in the right next column.

Push [ ] button once to start the unit. (Do not set the mode to On-Timer operation.)

Shorten the restart delay timer and start unit.

Push [ ] button once to start the unit.

• Shorten the restar t delay timer.

• Set the operation mode to

COOL.

• Set the fan speed level to AUTO.

• Set the preset temperature much lower than the room temperature. (The unit (compressor) operates continuously in the above condition.)

If the above condition (No. 5) still continues, start the unit in the following condition.

• Set the operation mode to HEAT.

• Set the preset temperature much higher than room temperature.

Connect the motor connector to the motor and turn on the power supply. Start the unit the following condition.

• Set the fan speed level to HIGH. (The unit (compressor) operates continuously in the above condition in No. 5.)

Check points

Check whether or not the fuse (F01) is blown.

Check power supply voltage :

Between CN30 and CN31 (AC 220–240V)

2. Between and of C08 (DC 310–340V)

3. Between 12V and GND

4. Between 5V and GND

Check power supply voltage :

1. Between CN23 and CN31

(DC 15–60V)

Check whether or not all indicators (OPERATION,TIMER,FILTER,PRE.DEF,

Hi POWER) are lit for 3 seconds and

they return to normal 3 seconds later.

1. Check whether or not the compressor operates.

2. Check whether or not the OPERATION indicator flashes.

1. Check whether or not the compressor operates.

2. Check whether or not the OPERATION indicator flashes.

1. Check it is impossible to detect the voltage (AC120V or higher

voltage) between red and black

2. The motor does not operate or the fan motor does not rotate with high speed. (But it is possible to receive the

signal from the remote controller.)

3. The motor rotates but vibrates

Causes

Impulse voltage was applied or the indoor fan motor short-circuited.

1. The terminal block or the crossover cable is connected wrongly.

2. The capacitor (C01), line filter (L01), resistor (R10), or the diode (DB01) is defective.

3. T01 is defective.

4. IC02 and T01 are defective.

IC51 and IC52 are defective.

The indicators are defective or the housing assembly (CN14) is defective.

1. The temperature of the indoor heat exchanger is extremely low.

2. The connection of the heat exchanger sensor is loose. (The connector is disconnected.) (CN62)

3. The heat exchanger sensor and the P.C. board are defective. (Refer to Table 11-4-1.)

4. The main P.C. board is defective.

1. The temperature of the indoor heat exchanger is extremely high.

2. The connection of the heat exchanger sensor short-circuited. (CN62)

3. The heat exchanger sensor and the P.C. board are defective. (Refer to Table 11-4-1.)

4. The main P.C. board is defective

1. The indoor fan motor is defective. (Protected operation of P.C. board.)

2. The P.C. board is defective.

3. The connection of the motor connector is loose.

lead of the motor.

strongly.

FILE NO. SVM-15006

(3) Check procedures

RAS-B10N3KV2-E1, RAS-B13N3KV2-E1

–

91 –

Table 11-8-2

No.

ocedure

Turn off the power supply breaker and remove the P.C. board assembly from electronic parts base. Remove the connecting cables from the terminal block.

Remove the connector of the motor and turn on the power supply breaker. If OPERATION indicator flashes (once per second), it is not necessary to check steps (1 to 3) in the right next column.

Push [ ] button once to star

t the unit. (Do not set the

mode to On-Timer operation.)

Shorten the restart delay timer and start unit.

Push [ ] button once to start the unit,

• Shorten the restar t delay timer.

• Set the operation mode to

COOL.

• Set the fan speed level to AUT

• Set the preset temperature much lower than the room temperature. (The unit (compressor) operates continuously in the above condition.)

Chec

k points

Check whether or not the fuse (F01) is blown.

Check power supply voltage :

1. Between No. 1 and No. 3 of CN01 (AC 220–240V)

2. Between and of C03 (DC 310–340V)

3. Between 12V and GND

4. Between 5V and GND

Check power supply voltage :

1. Between CN27 and

No. 1 of CN01 (DC 15–60V)

Check whether or not all indicators (OPERATION, TIMER, FAN-ONLY,

HI-POWER)

are lit for 3 seconds and they

1. Check whether or not the compressor operates.

2. Check whether or not the OPERATION indicator flashes.

Causes

Impulse voltage was applied or the indoor fan motor short-circuited.

1. The terminal block or the crossover cable is connected wrongly.

2. The capacitor (C01), line filter (L01), resistor (R02) is defective.

3. T101 is defective.

IC11 and T101 are defective.

IC51 and IC52 are defective.

The indicators are defective or the housing assembly (CN10) is defective.

1. The temperature of the indoor heat exchanger is extremely low.

2. The connection of the heat exchanger sensor is loose. (The connector is disconnected.) (CN62)

3. The heat exchanger sensor and the P.C. board are defective. (Refer to Table 11-4-1.)

4. The main P.C. board is defective.

FILE NO. SVM-15006

FILTER,

return to normal 3 seconds later.

Connect the motor connector to the motor and turn on the power supply. Start the unit the following condition.

• Set the fan speed level to HIGH. (The unit (compressor) operates continuously in the above condition in No. 5.)

1. Check it is impossible to detect the voltage (AC120V or higher

voltage) between red and black

2. The motor does not operate or the fan motor does not rotate with high speed. (But it is possible to receive the

signal from the remote controller.)

3. The motor rotates but vibrates

lead of the motor.

strongly.

1. The indoor fan motor is defective. (Protected operation of P.C. board.)

2. The P.C. board is defective.

3. The connection of the motor connector is loose.

RAS-B16N3KV2-E1

–

92 –

FILE NO. SVM-15006

11-8-2. P .C . Board Layout

RAS-

B10

N3KV2-E1,

RAS-B13N3KV2-E1

–

93 –

FILE NO. SVM-15006

100

20 10

010203040 50 60

Resistance value (k )

Temperature (˚C)

TA, TC, TO, TS, TE

[1] Sensor characteristic table

TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TO : Outdoor temp. sensor TS : Suction temp. sensor

TE : Outdoor heat exchanger temp

sensor

RAS-B16N3KV2-E1

GND

+ 5V

+12V

– 94 –

11-8-3. Indoor Unit (Other Parts)

11-8-4. Outdoor Unit

No.

Part name

Room temp. (TA) sensor Heat exchanger (TC) sensor

Checking procedure

Disconnect the connector and measure the resistance value with tester. (Normal temp.)

No.

Part name

Compressor

Checking procedure

Measure the resistance value of winding by using the tester.

Red

White Blac

Measure the resistance value of winding by using the tester.

Resistance value

2210 ± 221Ω

Under 20°C

Measure the resistance value of winding by using the tester.

COM

254

Position

Gray - White

Gray - Orange

Red- Yellow

Red- Blue

Resistance value

43 to 49Ω 43 to 49Ω 43 to 49Ω 43 to 49Ω

Temperature

Sensor

TA, TC (kΩ)

10°C20°C25°C30°C40°C

20.7 12.6 10.0 7.9 4.5

White Yellow Yellow Yellow Yellow

Refer to 11-5-1. (5). Measure the resistance value of each winding coil by using the tester.

(Under normal temp. 25°C)

Position

1 to 2 1 to 3 1 to 4 1 to 5

Resistance value

250Ω ± 7%

Refer to 11-5-1. (3) and (4).

Under 20°C

Disconnect the connector, and measure resistance value with the tester. (Normal temperature)

Outdoor temperature sensor (TO), discharge temperature sensor (TD), suction temperature sensor (TS), outdoor heat exchanger temperature sensor (TE)

Temperature

Sensor

TD (kΩ )

TO,TS,TE (kΩ )

10°C20°C25°C30°C40°C50°C

100 64 50 41 27 18

20.7 12.6 10.0 7.9 4.5 —

23Remote controller

Louver motor

24BYJ48-HTP

4 Indoor fan motor

Measure the resistance value of each winding by using the tester.

Under 20ºC

Position

Red - White

White - Black

Black- Red

Resistance value

20 to 22Ω 20 to 22Ω 20 to 22Ω

Outdoor fan motor (Model : ICF-140-43-4R)

4-way valve coil (Model : SQ : 10, 13k)

(Model : STF : 16k)

Pulse motor valve coil (Model : CAM-MD12TCTH-5)

FILE NO. SVM-15006

Red

White Black

(Model :

ASM89D16UFZ : 10,13k)

(Model :

DA131S1B-31FZ : 16k)

Position

Red - White

White - Black

Black - Red

Resistance value

ASM89D16UFZ DA131S1B-31FZ

1.44Ω

1.70Ω

1725 ± 172Ω

STF

–

95 –

11-8-5. Checking Method for Each Part

No.

Part name

Electrolytic capacitor (For boost, smoothing)

Checking procedure

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.

MCC-5009 Soldered surface

Heat sink IGBT side

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.

C12, C13, C14 → 500µF or 760µF/400V

Resistance value

in good product

∞

Tester rod

+ –

–

+ –

123

(DB01)

–

10 to 20 Ω when the multimeter probe is reversed

Diode block 1. Turn OFF the power supply breaker.

2. Completely discharge the four electrolytic capacitors.

3. Remove the diode block from the PCB (which is soldered in place).

Use a multimeter with a pointer to test the continuity, and check that the

diode block has the proper rectification characteristics.

FILE NO. SVM-15006

2 Converter module

1. Turn OFF the power supply breaker.

2. Discharge all three capacitors completely. 3 Check that the normal rectification characteristics are shown in continuity

test by the tester.

Diode check

Tester rod

Resistance value

in good product

50kΩ or more

(0Ω in trouble)

~ ~

+–

12 3

(DB01)

C07, C08, C09 → 500µF/400V

760µF/400V

(RAS-10,13N3AV2-E1)

(RAS-16N3AV2-E)

(RAS-10,13N3AV2-E1)

(RAS-16N3AV2-E)

–

96 –

11-9. 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 tens 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

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

(CN31 : Motor winding)

is 17 to 25Ω, it is normal.

Turn OFF the breaker.

Fan motor is normal.

Does the fan rotate without trouble

when rotating it with hands?

Disconnect two connectors (CN31) of the

outdoor fan motor from the outdoor P.C. board.

(Outdoor P.C. board error)

Fan motor error

YES

CN31

How to simply judge whether outdoor fan motor is good or bad

FILE NO. SVM-15006

RAS-10N3AV2-E1, RAS-13N3AV2-E1

–

97–

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.

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 17 to 25Ω, it is normal.

Turn OFF the breaker.

Fan motor is normal.

Does the fan rotate without trouble

when rotating it with hands?

Disconnect two connectors (CN300) of the

outdoor fan motor from the outdoor P.C. board.

(Outdoor P.C. board error)

Fan motor error

YES

CN300

FILE NO. SVM-15006

RAS-16N3AV2-E

– 98 –

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 pow er 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, the y may ignite any oil mixed with the refrigerant gas.

2. Do not use welding equipment in an airtight room.

Carbon monoxide poisoning ma y 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 cir-

cuitry, wear rubber gloves to avoid contact with the live parts.

Electric shocks may be receiv ed 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.

12-1. Indoor Unit

No.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

FILE NO. SVM-15006

3) Remove the left and right air filters.

– 99 –

No.Part name

Front panel

Procedures

4) Press "PUSH" part under the front panel and remove hooks of the front panel from the installation plate.

Remarks

Press

Front panel

Installation plate

5) Remove the front panel fixing screws. (2 pcs.)

6) Take off three hooks of panel from rear side.

1) Press three center positions and two lower center positions of the air outlet, and then hang the hanging hooks (3 pcs.) at the top side of the front panel to the rear plate.

2) Tighten two screws.

• Incomplete hanging or incomplete pressing may cause a dewdrops or generation

of a fluttering sound.

2 Screws

Three hooks

FILE NO. SVM-15006

Toshiba RAS-B10N3KV2-E1, RAS-B13N3KV2-E1, RAS-B16N3KV2-E1, RAS-10N3AV2-E1, RAS-13N3AV2-E1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual