Toshiba RAV-SM1603ATZG-E, RAV-SM1603DT-A, RAV-SM1603ATZ-E, RAV-SM1403DT-A User Manual

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Page 1

FILE NO. A07-009

SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

OUTDOOR UNIT <DIGITAL INVERTER>

RAV-SM1603AT-E

RAV-SM1603ATZ-E

RAV-SM1603ATZG-E

INDOOR UNIT <DIGITAL INVERTER>

RAV-SM1403DT-A RAV-SM1603DT-A

∗ Refer to the Service Manual with File No. A06-010 for Model RAV-SM1403AT-E, and refer to the

Service Manual with File No. A07-003 for Model RAV-SP1403AT-E, respectively.

R410A

PRINTED IN JAPAN, Jun, 2008 ToMo

Page 2

Adoption of New Refrigerant

This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer.

WARNING

Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it. Do not attempt it yourself.

The cleaning diagram for the air filter is there for the ser vice person, and not for the customer.

CONTENTS

SAFETY CAUTION ............................................................................................ 4

1. SPECIFICATIONS ...................................................................................... 9

1-1. Indoor Unit........................................................................................................... 9

1-2. Outdoor Unit...................................................................................................... 21

1-3. Operation Characteristic Curve....................................................................... 22

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ...................................... 23

2-1. Indoor Unit......................................................................................................... 23

2-2. Outdoor Unit...................................................................................................... 24

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM.............................. 27

3-1. Indoor Unit......................................................................................................... 27

3-2. Outdoor Unit...................................................................................................... 29

4. WIRING DIAGRAM................................................................................... 30

4-1. Indoor Unit......................................................................................................... 30

4-2. Outdoor Unit...................................................................................................... 32

4-3. Fan Characteristics .......................................................................................... 33

5. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 34

5-1. Indoor Unit......................................................................................................... 34

5-2. Outdoor Unit...................................................................................................... 34

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Page 3

6. REFRIGERANT R410A............................................................................ 35

6-1. Safety During Installation/Servicing ............................................................... 35

6-2. Refrigerant Piping Installation....................................................................... 35

6-3. Tools .................................................................................................................. 39

6-4. Recharging of Refrigerant................................................................................ 39

6-5. Brazing of Pipes................................................................................................ 40

6-6. Instructions for Re-use Piping of R22 or R407C ............................................ 42

6-7. Tolerance of Pipe Length and Pipe Head........................................................ 46

6-8. Additional Refrigerant Amount........................................................................ 48

6-9. Piping Materials and Sizes............................................................................... 50

6-10. Branch Pipe....................................................................................................... 51

6-11. Distributor ......................................................................................................... 51

7. INDOOR CONTROL CIRCUIT ................................................................. 52

7-1. Indoor Controller Block Diagram..................................................................... 52

7-2. Control Specifications...................................................................................... 53

7-3. Optional Connector Specifications of Indoor P.C. Board.............................. 59

7-4. Indoor Print Circuit Board................................................................................ 60

7-5. Outdoor Print Circuit Board............................................................................. 61

8. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS........... 64

8-1. Outdoor Controls.............................................................................................. 64

9. INDOOR UNIT TROUBLESHOOTING...................................................... 69

9-1. Summary of Troubleshooting........................................................................... 69

9-2. Troubleshooting................................................................................................ 70

10. OUTDOOR UNIT TROUBLESHOOTING.................................................. 83

10-1. Summary of Troubleshooting........................................................................... 83

10-2. Troubleshooting................................................................................................ 85

11. REPLACEMENT OF SERVICE P.C. BOARD ......................................... 112

11-1. Indoort Unit ..................................................................................................... 112

12. SETUP AT LOCAL SITE AND OTHERS................................................ 116

12-1. Indoor Unit....................................................................................................... 116

12-2. Setup at Local Site / Others ........................................................................... 123

12-3. How to Set up Central Control Address Number ......................................... 125

13. ADDRESS SETUP.................................................................................. 127

13-1. Address Setup Procedure.............................................................................. 127

13-2. Address Setup & Group Control.................................................................... 128

13-3. Address Setup (Manual Setting from Remote Controller)........................... 131

14. DETACHMENTS ..................................................................................... 133

14-1. Indoor Unit....................................................................................................... 133

14-2. Outdoor Unit.................................................................................................... 141

15. EXPLODED VIEWS AND PARTS LIST .................................................. 150

15-1. Indoor Unit....................................................................................................... 150

15-2. Outdoor Unit.................................................................................................... 153

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Page 4

SAFETY CAUTION

The important contents concerned to the saf ety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents

(Indications/Illustrated marks), and keep them.

[Explanation of indications]

Indication

DANGER

WARNING

CAUTION

∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet

Indicates contents assumed that an imminent danger causing a death or serious injury of the repair engineers and the third parties when an incorrect work has been executed.

Indicates possibilities assumed that a danger causing a death or serious injury of the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed.

Indicates contents assumed that an injury or proper ty damage (∗) may be caused on the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed.

Explanation

[Explanation of illustrated marks]

Mark Explanation

Indicates prohibited items (Forbidden items to do) The sentences near an illustrated mark describe the concrete prohibited contents.

Indicates mandatory items (Compulsory items to do) The sentences near an illustrated mark describe the concrete mandatory contents.

Indicates cautions (Including danger/warning) The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.

[Confirmation of warning label on the main unit]

Confirm that labels are indicated on the specified positions (Refer to the Parts disassembly diagr am (Outdoor unit).)

If removing the label during parts replace, stick it as the original.

DANGER

Turn “OFF” the breaker before removing the front panel and cabinet, otherwise an electric shock is caused by high voltage resulted in a death or injury.

During operation, a high voltage with 400V or higher of circuit (∗) at secondary circuit of the high-voltage transformer is applied.

Turn off breaker.

Execute discharge

between terminals.

Prohibition

If touching a high voltage with the naked hands or body, an electric shock is caused even if using an electric insulator.

∗ : For details, refer to the electric wiring diagram.

When removing the front panel or cabinet, execute short-circuit and discharge between highvoltage capacitor terminals.

If discharge is not executed, an electric shock is caused by high voltage resulted in a death or injury. After turning off the breaker, high voltage also keeps to apply to the high-voltage capacitor.

Do not turn on the breaker under condition that the front panel and cabinet are removed.

An electric shock is caused by high voltage resulted in a death or injury.

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Page 5

Check earth wires.

Prohibition of modification.

Use specified parts.

Do not bring a child

close to the equipment.

Insulating measures

No fire

WARNING

Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.

If the earth wire is not correctly connected, contact an electric engineer for rework.

Do not modify the products.

Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.

For spare parts, use those specified (

If unspecified parts are used, a fire or electric shock may be caused. ∗: For details, refer to the parts list.

Before troubleshooting or repair work, do not bring a third party (a child, etc.) except the repair engineers close to the equipment.

It causes an injury with tools or disassembled parts. Please inform the users so that the third party (a child, etc.) does not approach the equipment.

Connect the cut-off lead wires with crimp contact, etc, put the closed end side upward and then apply a water-cut method, otherwise a leak or production of fire is caused at the users’ side.

When repairing the refrigerating cycle, take the following measures.

1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire.

2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide poisoning may be caused.

3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the inflammables.

∗∗

∗).

∗∗

Refrigerant

Check the used refrigerant name and use tools and materials of the parts which match with it.

For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former R22.

For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.

If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an injury due to breakage may be caused.

Do not charge refrigerant additionally.

If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over the specified standard amount is charged and an abnormal high pressure is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury. Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time, never charge the refrigerant over the specified amount.

When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other than R410A into the specified refrigerant.

If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle resulted in cause of injury due to breakage.

After installation work, check the refrigerant gas does not leak.

If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

Never recover the refrigerant into the outdoor unit.

When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as breakage or injury is caused.

Assembly/Cabling

After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the cabinet or panel does not catch the inner wires.

If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at user’s side.

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Page 6

WARNING

Insulator check

Ventilation

Be attentive to

electric shock

Compulsion

After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 2M metal section (Earth position).

If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.

When the refrigerant gas leaks during work, execute ventilation.

If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to execute ventilation.

When checking the circuit inevitably under condition of the power-ON, use rubber gloves and others not to touch to the charging section.

If touching to the charging section, an electric shock may be caused.

When the refrigerant gas leaks, find up the leaked position and repair it surely.

If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

When installing equipment which includes a large amount of charged refrigerant such as a multi air conditioner in a sub-room, it is necessary that the density does not the limit even if the refrigerant leaks.

If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.

For the installation/moving/reinstallation work, follow to the Installation Manual.

If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.

ΩΩ

Ω or more between the charge section and the non-charge

ΩΩ

Check after repair

Check after reinstallation

Put on gloves

Cooling check

After repair work has finished, check there is no trouble.

If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off the power breaker.

After repair work (installation of front panel and cabinet) has finished, execute a test run to check there is no generation of smoke or abnormal sound.

If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel and cabinet.

Check the following items after reinstallation.

1) The earth wire is correctly connected.

2) The power cord is not caught in the product.

3) There is no inclination or unsteadiness and the installation is stable. If check is not executed, a fire, an electric shock or an injury is caused.

CAUTION

Be sure to put on the gloves (∗) and a long sleeved shirt: otherwise an injury may be caused with the parts, etc.

(∗) Heavy gloves such as wor k gloves

When the power was turned on, start to work after the equipment has been sufficiently cooled.

As temperature of the compressor pipes and others became high due to cooling/heating operation, a burn may be caused.

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Page 7

• New Refrigerant (R410A)

This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer.

1. Safety Caution Concerned to New Refrigerant

The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the

refrigerating cycle of the air conditioner with new refrigerant during installation work or service work. If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident. Use the tools and materials exclusive to R410A to purpose a safe work.

2. Cautions on Installation/Service

1) Do not mix the other refrigerant or refrigerating oil. For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of

the former refrigerant in order to prevent mixture of them.

2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools which are specified for R410A.

3) In the installation time, use clean pipe materials and work with great attention so that water and others do not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc.

Use the clean pipes. Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.)

4) For the earth protection, use a vacuum pump for air purge.

5) R410A refrigerant is azeotropic mixture type refrigerant. Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the

refrigerant changes and then characteristics of the air conditioner change.)

3. Pipe Materials

For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate pipes to conform to the standard. Use clean material in which impurities adhere inside of pipe or joint to a minimum.

1) Copper pipe

The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type. When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe

without seam” and one with bonded oil amount 40mg/10m or less. Also do not use crushed, deformed, discolored (especially inside) pipes.

(Impurities cause clogging of expansion valves and capillar y tubes.)

Use the flare nuts which are attached to the air conditioner unit.

2) Joint

The flare joint and socket joint are used for joints of the copper pipe. The joints are rarely used for installation of the air conditioner. However clear impurities when using them.

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Page 8

4. Tools

1. Required T ools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary,

etc. Accordingly, the tools to be used are classified into the following three types.

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

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

3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.

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

Tools whose specifications are changed for R410A and their interchangeability

No.

Flare tool

Copper pipe gauge for

adjusting projection margin Torque wrench

Gauge manifold

Charge hose

V acuum pump adapter

Electronic balance for

refrigerant charging Refrigerant cylinder

Leakage detector

Used tool

Usage

Pipe flaring Flaring by conventional

flare tool Tightening of flare nut

Evacuating, refrigerant charge, run check, etc.

Vacuum evacuating

Refrigerant charge

Refrigerant charge Gas leakage check

air conditioner installation

R410A

Existence of Whether conven-

new equipment tional equipment

for R410A can be used

Ye s *(Note)

Yes No

Yes Yes

Yes No Yes No

Conventional air

conditioner installation

Whether conventional

equipment can be used

Yes

*(Note)

Yes

(Note) 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.

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. 7) Screwdriver (+, –)

2) Torque wrench 8) Spanner or Monkey wrench

3) Pipe cutter 9) Hole core drill

4) Reamer 10) Hexagon wrench (Opposite side 4mm)

5) Pipe bender 11) Tape measure

6) Level vial 12) Metal saw

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

1) Clamp meter 3) Insulation resistance tester (Megger)

2) Ther mometer 4) Electroscope

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Page 9

1-1. Indoor Unit

1-1-1. High Static Duct Type

1. SPECIFICATIONS

Model

Cooling capacity (kW) Heating capacity (kW) Power supply

Electrical characteristics

Appearance Main unit

Outer dimension

Total weight Main unit (kg) Heat exchanger

Fan unit

Air filter Controller (sold separately) Sound pressure level H (dB•A) Sound power level H (dB•A)

Connecting pipe Liquid side (mm)

Indoor unit RAVOutdoor unit RAV-

Running current (A) Power consumption (kW)

Cooling

Heating

Maximum current (A)

Main unit Width (mm)

Fan Standard air flow at 100Pa/HH tap (m³/min.) Fan speed Motor (W)

External static pressure

Power factor (%) EER Energy efficiency class ∗ Energy rating ∗∗ Running current (A) Power consumption (kW) Power factor (%) COP Energy efficiency class ∗ Energy rating ∗∗

Height (mm)

Depth (mm)

Standard (at HH tap) (Pa) Range at HH tap (Pa)

Gas side (mm)

Drain port (mm)

SM1403DT-A SM1403DT-A SM1603DT-A

SM1403AT-E SP1404AT-E SM1603AT(Z)(ZG)-E

12.5 13.0 14.3

14.0 14.0 16.0 1 phase 240V, 50Hz

21.3 18.5 21.97

4.95 4.32 5.01

96.8 97.3 95

2.53 3.01 2.85

(E) (B) (C)

—

16.9 14.5 20.04

3.94 3.38 4.57

97.1 97.1 95.0

3.55 4.14 3.50

(B) (A) (B)

—

22.8 22.8 32.0

Zinc hot dipping steel plate

380

1050

600

Finned tube

Centrifugal fan

55 55 58

2 600 100

50 – 250

None (Arranged locally)

Remote controller 49 49 50 64 64 65

15.9

9.5

32 (VP25)

– 9 –

∗ : IEC standard, ∗∗ : AS standard

Page 10

1-1-2. 4-way Air Discharge Cassette Type

Model

Cooling capacity (kW) Heating capacity (kW) Power supply

Electrical characteristics

Appearance

Outer dimension

Total weight

Heat exchanger

Fan unit Standard air flow H/M/L (m³/min.)

Air filter Controller (sold separately) Sound pressure level H/M/L (dB•A)

Sound power level H/M/L (dB•A)

Connecting pipe Liquid side (mm)

Indoor unit RAVOutdoor unit RAV-

Running current (A) Power consumption (kW)

Cooling

Heating

Maximum current (A) Main unit

Ceiling panel (Sold separately)

Main unit Width (mm)

Ceiling panel (Sold separately)

Main unit (kg) Ceiling panel (Sold separately) (kg)

Fan

Motor (W)

Power factor (%) EER Energy efficiency class ∗ Energy rating ∗∗ Running current (A) Power consumption (kW) Power factor (%) COP Energy efficiency class ∗ Energy rating ∗∗

Model

Panel color Height (mm)

Depth (mm) Height (mm) Width (mm) Depth (mm)

Gas side (mm)

Drain port (mm)

SM1604UT-E

SM1603AT(Z)(ZG)-E

14.0

16.0

1 phase 230V (220 – 240V) 50Hz

21.38 – 19.69

4.49 95

3.12

(B)

—

21.20 – 19.43

4.43 95

3.61

(A)

—

29.7

Zinc hot dipping steel plate

RBC-U31PG (W, WS)-E,

RBC-U31PGS (W, WS)-E

W: Moon-white (2.5GY 9.0/0.5),

WS: Stripe-white (2.5GY 9.0/0.5 (Gray: 8B 3/0.3))

319 840 840

950 950

4.2

Finned tube

Turbo fan

35.5 / 25 / 21 72

Standard filter attached (Long life filter)

RBC-AMT32E, AMS41E,

AS21E2, AX31U (W)-E

45 / 40 / 36 60 / 55 / 51

15.9

9.5

32 (VP25)

– 10 –

∗ : IEC standard, ∗∗ : AS standard

Page 11

Indoor unit 1 RAV- SM804UT-E

Model Indoor unit 2 RAV- SM804UT-E

Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Indoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Running current (A) 21.48 – 19.69 Power consumption (kW) 4.49

Cooling Power factor (%) 95

EER 3.12

Electrical characteristics

Heating Power factor (%) 95

Fan Turbo fan

Fan unit Standard air flow H/M/L (m³/min.) 20.5 / 16.0 / 13.5

Motor (W) 20 Sound pressure level H/M/L (dB•A) 35 / 31 / 28 Sound power level H/M/L (dB•A) 50 / 46 / 43

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5

Min. length (m) 5 Refrigerant

pipe

Max. total length (m) 50

Height

difference

Energy efficiency class ∗ (B) Running current (A) 21.20 – 19.43 Power consumption (kW) 4.43

COP 3.61 Energy efficiency class ∗ (A)

Outdoor unit

Outdoor lower (m) 30 Outdoor higher (m) 30

Fan Propeller fan Fan unit Standard air flow volume (m³/min.) 103

Motor (W) 100 + 100

Gas side Connecting

pipe

Liquid side

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

Main (mm) 15.9 Sub (mm) 15.9 Main (mm) 9.5 Sub (mm) 9.5

– 11 –

∗ : IEC standard

Page 12

Indoor unit 1 RAV- SM564UT-E

Model

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical characteristics

Indoor unit 2 RAV- SM564UT-E

Indoor unit 3 RAV- SM564UT-E

Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Indoor unit

Running current (A) 21.48 – 19.69 Power consumption (kW) 4.49

Cooling Power factor (%) 95

EER 3.12 Energy efficiency class ∗ (B) Running current (A) 21.20 – 19.43 Power consumption (kW) 4.43

Heating Power factor (%) 95

COP 3.61 Energy efficiency class ∗ (A)

Fan Turbo fan Fan unit Standard air flow H/M/L (m³/min.) 17.5 / 14.5 / 13.0

Motor (W) 14 Sound pressure level H/M/L (dB•A) 32 / 29 / 28 Sound power level H/M/L (dB•A) 47 / 44 / 43

Outdoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5

Min. length (m) 5 Refrigerant

pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Max. total length (m) 50

Height

difference

Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Outdoor lower (m) 30 Outdoor higher (m) 30

Main (mm) 15.9 Sub (mm) 12.7 Main (mm) 9.5

Sub (mm) 6.4 Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

– 12 –

∗ : IEC standard

Page 13

1-1-3. Concealed Duct Type

Indoor unit 1 RAV- SM802BT-E

Model Indoor unit 2 RAV- SM802BT-E

Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Indoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Running current (A) 24.50 – 22.46

Power consumption (kW) 5.12

Cooling Power factor (%) 95

EER 2.73 Electrical

characteristics

Heating Power factor (%) 95

Fan Centrifugal fan Standard air flow H/M/L (m³/min.) 19.0 / 16.2 / 13.3

Fan unit Motor (W) 120

External static pressure

Sound pressure level H/M/L (dB•A) 40 / 37 / 34 Sound power level H/M/L (dB•A) 55 / 52 / 49

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5

Min. length (m) 5 Refrigerant pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

Max. total length (m) 50

Height

difference

Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Energy efficiency class ∗ — Running current (A) 22.44 – 20.57 Power consumption (kW) 4.69

COP 3.41 Energy efficiency class ∗ —

Standard (at shipment) (Pa) 40 Set up for tap exchange (Pa) 20 / 40 / 70 / 100

Outdoor unit

Outdoor lower (m) 30 Outdoor higher (m) 30

Main (mm) 15.9 Sub (mm) 15.9 Main (mm) 9.5 Sub (mm) 9.5

– 13 –

∗ : IEC standard

Page 14

Indoor unit 1 RAV- SM562BT-E

Model

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical characteristics

Fan unit Motor (W) 120

Sound pressure level H/M/L (dB•A) 40 / 37 / 33 Sound power level H/M/L (dB•A) 55 / 52 / 48

Power supply 1 phase 230V (220 – 240V) 50Hz

Refrigerant pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

Indoor unit 2 RAV- SM562BT-E

Indoor unit 3 RAV- SM562BT-E

Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Indoor unit

Running current (A) 24.50 – 22.46 Power consumption (kW) 5.12

Cooling Power factor (%) 95

EER 2.73 Energy efficiency class ∗ — Running current (A) 22.44 – 20.57 Power consumption (kW) 4.69

Heating Power factor (%) 95

COP 3.41

Energy efficiency class ∗ — Fan Centrifugal fan Standard air flow H/M/L (m³/min.) 13.0 / 11.9 / 9.8

External static pressure (Factory setting) (Pa) 40 External static pressure (Pa) 20 / 40 / 70 / 100

Outdoor unit

Standard length (m) 7.5 Min. length (m) 5 Max. total length (m) 50

Height difference

Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Outdoor lower (m) 30

Outdoor higher (m) 30

Main (mm) 15.9

Sub (mm) 12.7

Main (mm) 9.5

Sub (mm) 6.4

– 14 –

∗ : IEC standard

Page 15

1-1-4. Under Ceiling Type

Indoor unit 1 RAV- SM802CT-E

Model Indoor unit 2 RAV- SM802CT-E

Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Indoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Running current (A) 23.88 – 21.89

Power consumption (kW) 4.99 Cooling Power factor (%) 95

EER 2.81

Electrical characteristics

Heating Power factor (%) 95

Fan Centrifugal fan

Fan unit Standard air flow H/M/L (m³/min.) 18.5 / 16.7 / 14.6

Motor (W) 60

Sound pressure level H/M/L (dB•A) 38 / 36 / 33 Sound power level H/M/L (dB•A) 53 / 51 / 48

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5 Min. length (m) 5

Refrigerant pipe

Max. total length (m) 50 Height

difference

Energy efficiency class ∗ —

Running current (A) 22.44 – 20.57

Power consumption (kW) 4.69

COP 3.41

Energy efficiency class ∗ —

Outdoor unit

Outdoor lower (m) 30

Outdoor higher (m) 30 Fan Propeller fan

Fan unit Standard air flow volume (m³/min.) 103

Motor (W) 100 + 100

Gas side

Connecting pipe

Liquid side

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

Main (mm) 15.9

Sub (mm) 15.9

Main (mm) 9.5

Sub (mm) 9.5

– 15 –

∗ : IEC standard

Page 16

Indoor unit 1 RAV- SM562CT-E

Model

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical characteristics

Indoor unit 2 RAV- SM562CT-E Indoor unit 3 RAV- SM562CT-E Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Indoor unit

Running current (A) 23.88 – 21.89

Power consumption (kW) 4.99 Cooling Power factor (%) 95

EER 2.81

Energy efficiency class ∗ —

Running current (A) 22.44 – 20.57

Power consumption (kW) 4.69 Heating Power factor (%) 95

COP 3.41

Energy efficiency class ∗ — Fan Centrifugal fan

Fan unit Standard air flow H/M/L (m³/min.) 13.0 / 11.2 / 10.0

Motor (W) 60

Sound pressure level H/M/L (dB•A) 36 / 33 / 30 Sound power level H/M/L (dB•A) 51 / 48 / 45

Outdoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5 Min. length (m) 5

Refrigerant pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Max. total length (m) 50 Height

difference Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Outdoor lower (m) 30

Outdoor higher (m) 30

Main (mm) 15.9

Sub (mm) 12.7

Main (mm) 9.5

Sub (mm) 6.4

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

– 16 –

∗ : IEC standard

Page 17

1-1-5. High Wall T ype

Indoor unit 1 RAV- SM802KRT-E

Model Indoor unit 2 RAV- SM802KRT-E

Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Indoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Running current (A) 24.40 – 22.37

Power consumption (kW) 5.10 Cooling Power factor (%) 95

EER 2.75

Electrical characteristics

Heating Power factor (%) 95

Fan Cross flow fan

Fan unit Standard air flow H/M/L (m³/min.) 18.5 / 14.6 / 12.2

Motor (W) 30

Sound pressure level H/M/L (dB•A) 45 / 41 / 36 Sound power level H/M/L (dB•A) 60 / 56 / 51

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5 Min. length (m) 5

Refrigerant pipe

Max. total length (m) 50 Height

difference

Energy efficiency class ∗ —

Running current (A) 23.83 – 21.84

Power consumption (kW) 4.98

COP 3.21

Energy efficiency class ∗ —

Outdoor unit

Outdoor lower (m) 30

Outdoor higher (m) 30 Fan Propeller fan

Fan unit Standard air flow volume (m³/min.) 103

Motor (W) 100 + 100

Gas side

Connecting pipe

Liquid side

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

Main (mm) 15.9

Sub (mm) 15.9

Main (mm) 9.5

Sub (mm) 9.5

– 17 –

∗ : IEC standard

Page 18

Indoor unit 1 RAV- SM562KRT-E

Model

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical characteristics

Indoor unit 2 RAV- SM562KRT-E Indoor unit 3 RAV- SM562KRT-E Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Indoor unit

Running current (A) 24.40 – 22.37

Power consumption (kW) 5.10 Cooling Power factor (%) 95

EER 2.75

Energy efficiency class ∗ —

Running current (A) 23.83 – 21.84

Power consumption (kW) 4.98 Heating Power factor (%) 95

COP 3.21

Energy efficiency class ∗ — Fan Cross flow fan

Fan unit Standard air flow H/M/L (m³/min.) 14.0 / 12.5 / 10.7

Motor (W) 30

Sound pressure level H/M/L (dB•A) 39 / 36 / 33 Sound power level H/M/L (dB•A) 54 / 51 / 48

Outdoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5 Min. length (m) 5

Refrigerant pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Max. total length (m) 50 Height

difference Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Outdoor lower (m) 30

Outdoor higher (m) 30

Main (mm) 15.9

Sub (mm) 12.7

Main (mm) 9.5

Sub (mm) 6.4

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

– 18 –

∗ : IEC standard

Page 19

1-1-6. Compact 4-way Cassette (600 × 600) Type

Indoor unit 1 RAV- SM562MUT-E

Model

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical characteristics

Indoor unit 2 RAV- SM562MUT-E Indoor unit 3 RAV- SM562MUT-E Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Indoor unit

Running current (A) 23.88 – 21.89

Power consumption (kW) 4.99 Cooling Power factor (%) 95

EER 2.81

Energy efficiency class ∗ —

Running current (A) 22.44 – 20.57

Power consumption (kW) 4.69 Heating Power factor (%) 95

COP 3.41

Energy efficiency class ∗ — Fan Turbo fan

Fan unit Standard air flow H/M/L (m³/min.) 13.3 / 11.2 / 9.1

Motor (W) 60

Sound pressure level H/M/L (dB•A) 43 / 39 / 34 Sound power level H/M/L (dB•A) 58 / 54 / 49

Outdoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5 Min. length (m) 5

Refrigerant pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Max. total length (m) 50 Height

difference Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Outdoor lower (m) 30

Outdoor higher (m) 30

Main (mm) 15.9

Sub (mm) 12.7

Main (mm) 9.5

Sub (mm) 6.4

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

– 19 –

∗ : IEC standard

Page 20

1-1-7. Slim Duct Type

Indoor unit 1 RAV- SM564SDT-E

Model

Cooling capacity (kW) 14.0 Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical characteristics

Fan unit Motor (W) 60

Sound pressure level

Sound power level

Power supply 1 phase 230V (220 – 240V) 50Hz

Refrigerant pipe

Fan unit Standard air flow volume (m³/min.) 103

Connecting pipe

Sound pressure level Cooling/Heating (dB•A) 51 / 53 Sound power level Cooling/Heating (dB•A) 68 / 70

Indoor unit 2 RAV- SM564SDT-E Indoor unit 3 RAV- SM564SDT-E Outdoor unit RAV- SM1603AT(Z)(ZG)-E

Indoor unit

Running current (A) 23.88 – 21.89

Power consumption (kW) 4.99 Cooling Power factor (%) 95

EER 2.81

Energy efficiency class ∗ —

Running current (A) 22.44 – 20.57

Power consumption (kW) 4.69 Heating Power factor (%) 95

COP 3.41

Energy efficiency class ∗ — Fan Centrifugal fan Standard air flow H/M/L (m³/min.) 13.0 / 11.3 / 9.7

External static pressure

Under air inlet H/M/L (dB•A) 45 / 40 / 36 Back air inlet H/M/L (dB•A) 33 / 31 / 28 Under air inlet H/M/L (dB•A) 60 / 55 / 51 Back air inlet H/M/L (dB•A) 48 / 46 / 43

Standard length (m) 7.5 Min. length (m) 5 Max. total length (m) 50

Height difference

Fan Propeller fan

Motor (W) 100 + 100

Gas side

Liquid side

Standard (at shipment) (Pa) 10

Set up for tap exchange (Pa) 10 / 20 / 35 / 50

Outdoor unit

Outdoor lower (m) 30

Outdoor higher (m) 30

Main (mm) 15.9

Sub (mm) 12.7

Main (mm) 9.5

Sub (mm) 6.4

– 20 –

∗ : IEC standard

Page 21

1-2. Outdoor Unit

Model name Power supply

Type

Compressor Motor (kW)

Pole Refrigerant charged (kg) Refrigerant control

Standard length (m)

Min. length (m)

Inter connecting pipe

Max. total length (m)

Additional refrigerant charge

under long piping connector

Height

difference

Height (mm)

Outdoor lower (m) Outdoor higher (m)

RAV-SM1603AT(Z)(ZG)-E

1 phase 230V (220 – 240V) 50Hz

Hermetic compressor

3.75 4

3.1

Pulse motor valve

7.5 5

40g/m

(31m to 50m)

30 30

1340

Outer dimension Width (mm)

Depth (mm) Appearance Total weight (kg) Heat exchanger

Fan Fan unit Standard air flow (m³/h)

Motor (W)

Gas side (mm) Connecting pipe

Liquid side (mm) Sound pressure level Cooling/Heating (dB•A) Sound power level Cooling/Heating (dB•A) Outside air temperature, Cooling (°C) Outside air temperature, Heating (°C)

900 320

Silky shade (Muncel 1Y8.5/0.5)

Finned tube

Propeller fan

103

100 + 100

15.9

9.5 51 / 53 68 / 70

43 to –15 15 to –15

– 21 –

Page 22

1-3. Operation Characteristic Curve

• Operation characteristic curve

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

23.7 22

20 18 16 14 12

Current (A)

8 6 4 2 0

0 204060

Compressor speed (rps)

• Conditions

Indoor : DB27°C/WB19°C Outdoor : DB35°C Air flow : High Pipe length : 7.5m 230V

79 100 120

28.2 26

24 22 20 18 16

14 12 10

8 6 4 2

28.2 26

24 22 20 18 16 14

Current (A)

12 10

8 6 4 2 0

0 204060

Compressor speed (rps)

• Conditions

Indoor : DB20°C Outdoor : DB7°C/WB6°C Air flow : High Pipe length : 7.5m 230V

78.6 100 120

• Capacity variation ratio according to temperature

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

105

100

Capacity ratio (%)

32 33 34 35 36 37 38 39

• Conditions

Indoor : DB27°C/WB19°C Indoor air flow : High Pipe length : 7.5m

41 42 43

120 110 100

90 80 70 60 50

Capacity ratio (%)

40 30 20 10

-14-12-10-8-6-4-20246810

• Conditions Indoor : DB20°C Indoor air flow : High Pipe length : 7.5m

Outdoor temp. (°C)

– 22 –

Page 23

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

2-1. Indoor Unit

RAV-SM1403DT-A, RAV-SM1603DT-A

Service work space

200

or more

704 664 600(52) (52)

Check port

400 × 800

Plug (Port for check and clean)

200

Drain trap

Drain pipe

Adhesive inhibited

3-M5 hole for drain pump kit

1300 or more

Air flow Air flow

1050

(900)(95)

950 (Bolt pitch) (50)(50)

100

or more

Refrigerant piping (3/8” (Ø9.52))

Refrigerant piping (5/8” (Ø15.88))

145145 20

490

600

Electric parts box Drain port (Outer diameter: Ø32)

(915)

(36)

(53)

(72)

Refrigerant piping (5/8” (Ø15.88))

Refrigerant piping (3/8” (Ø9.52))

Drain port (Outer diameter: Ø32)

380

97 50 42

(30)

Hung-up plate

965 (Bolt pitch) (35)(50)

(111) 854 (85)

271 (28)81

Flange (Air outlet side) Flange (Air inlet side)

276

(Inside)

25 25

256 256271

65 65

757 (Inside)

807

11 × 65 = 715

24-Ø5 hole (Include in the other side)

8-Ø7 hole

10-Ø5 hole (Include in the other side)

10296

316

4 × 60 = 240

12 25 67.5 250 250

– 23 –

10-Ø5 hole (Include in the other side)8-Ø7 hole

274

(Inside)

20 20

25 25

845 (Inside)

885

11 × 65 = 715

24-Ø5 hole (Include in the other side)

250 67.5

300

324

4 × 60 = 240

Page 24

365 17.5

17.5

Drain hole (Ø28 × 88)

128

118

Air inlet port

380

200 60

Air inlet

port

Air outlet port

383

150 600

Drain hole (Ø25)

170

A legs

B legs

39 96

Mounting bolt hole (Ø12 × 17 long hole)

Details of A legs Details of B legs

Name Note

Refrigerant piping hole

Indoor/Outdoor unit connecting wire inlet hole

Power supply inlet hole Ø38 Kockout hole

Mounting bolt hole (Ø12 × 17 U-shape hole)

——

2-2. Outdoor Unit

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

– 24 –

121 53453485

655

360

70 74581 581

60 68 518 135 151 12

83 7

178

327 400

900

550

Refrigerant pipe connecting port (Ø9.5 flare at liquid side)

Refrigerant pipe connecting port (Ø15.9 flare at gas side)

605

613

155

55 95

178 178 80 18 8018

1 1

95 55

320

1340

55 95

Z views

65 7

Knockout for downward piping

Unit : mm

Page 25

RBC-TWP30E2, RBC-TWP50E2 (Simultaneous Twin)

Inner diameter Ø C

Inner

diameter Ø D

Model (RBC-)

TWP30E2

TWP50E2

Liquid side Gas side Liquid side Gas side

Inner

diameter Ø D

ABCD

36 14 Ø9.5 Ø6.4 43 23 Ø15.9 Ø12.7 34 14 Ø9.5 Ø9.5 44 21 Ø15.9 Ø15.9

– 25 –

Page 26

RBC-TRP100E (Simultaneous Triple)

Header assembly

300

Inner diameter Ø25.4Inner diameter Ø12.7

Branch pipe assembly

80 80100

Inner diameter Ø15.9

100

80 80100

Inner diameter Ø9.52

Insulator

Gas side socket Liquid side socket

Ø15.9

Ø12.7

Ø15.9

(External

diameter)

Ø25.4

(External

diameter)

Ø6.4

Ø9.5

(External

diameter)

100

Ø9.5

Ø12.7

(External

diameter)

3 pcs. 3 pcs.1 pc. 1 pc.

– 26 –

Page 27

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM

3-1. Indoor Unit

• Single type (Combination of one indoor unit and one outdoor unit)

Distributor (Strainer incorporated)

TC sensor

Refrigerant pipe at liquid side ØB

Indoor unit

TCJ sensor

Air heat

exchanger

Heating Cooling

Refrigerant pipe at gas side ØA

To outdoor unitTo outdoor unit

Dimension table Capillary tube specifications

Indoor unit

SM140, 160 type

Outer diameter of refrigerant pipe

Gas side ØA Liquid side ØB

15.9 9.5

Model

RAV-SM∗∗∗DT

SM140, 160 type

Inner dia. × Length × Q’ty

Ø2 × 200 × 3, Ø2 × 300 × 1 Ø2 × 350 × 2, Ø2 × 400 × 1

– 27 –

Page 28

• Single type (Combination of one indoor unit and one outdoor unit)

Distributor (Strainer incorporated)

TC sensor

Refrigerant pipe at liquid side Outer diameter Ø9.5

Heating Cooling

• Twin type (Combination of two indoor units and one outdoor unit)

Distributor (Strainer incorporated)

TC sensor

Indoor A unit

TCJ sensor

Air heat

exchanger

Distributor (Strainer incorporated)

TC sensor

Indoor unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe at gas side Outer diameter Ø15.9

To outdoor unitTo outdoor unit

Indoor B unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe at liquid side Outer diameter Ø6.4

Branch pipe

Refrigerant pipeat liquid side Outer diameter Ø9.5

To outdoor unit

Refrigerant pipe at gas side Outer diameter Ø12.7

Refrigerant pipe at liquid side Outer diameter Ø6.4

Refrigerant pipeat gas side

Outer diameter Ø15.9 Heating Cooling

• Triple type (Combination of three indoor units and one outdoor unit)

Distributor (Strainer incorporated)

TC sensor

Refrigerant pipe at liquid side Outer diameter Ø6.4

Indoor A unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe at gas side Outer diameter Ø12.7

Distributor (Strainer incorporated)

TC sensor

Refrigerant pipe at liquid side Outer diameter Ø6.4

Indoor B unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe at gas side Outer diameter Ø12.7

Distributor (Strainer incorporated)

TC sensor

Refrigerant pipe at liquid side Outer diameter Ø6.4

Refrigerant pipe at gas side Outer diameter Ø12.7

Branch pipe

To outdoor unit

Indoor C unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe at gas side Outer diameter Ø12.7

Refrigerant pipeat liquid side Outer diameter Ø9.5

To outdoor unit

Distributor

Heating Cooling

– 28 –

Distributor

Refrigerant pipeat gas side Outer diameter Ø15.9

To outdoor unit

Page 29

3-2. Outdoor Unit

Muffler

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

Accumulator

(2500cc)

TS sensor

Check joint

Cooling: High pressure Heating: Low pressure

TD sensor

Rotary compressor

(DA422A3F-25M)

Muffler

Ø25 × L210

TO sensor

Heat exchanger

Ø8, 2 rows, 52 stages

FP1.45, flat fin

In cooling operation In heating operation

Ø25 × L180

TE sensor

Distributor

Strainer

PMV

Strainer

Capillary Ø4 ×Ø3 (6 pcs.)

Refrigerant pipe at liquid side Ø9.5 Packed valve

Refrigerant pipe at gas side Ø15.9 Ball valve

Cooling: Low pressure

Heating: High pressure

Systematic Diagram of Refrigerating Cycle

* This compressor has 4-pole motor.

The value when compressor frequency (Hz) is measured by a clamp meter becomes 2 times of No. of compressor revolutions (rps).

Standard

Cooling Overload

Low load Standard

Heating Overload

Low load

Pressure

(MPa) (kg/cm²g)

Pd Ps Pd Ps

2.85 0.83 29.1 8.5

3.41 1.04 34.8 10.6

2.08 0.54 21.2 5.5

2.82 0.66 28.7 6.7

2.44 1.13 24.9 11.5

2.32 0.25 23.7 2.5

Discharge Suction

Pipe surface temperature (°C)

Indoor heat Outdoor heat

exchanger exchanger

(TD) (TS) (TC) (TE)

80 11 9 39 84 14 15 49 54 5 8 37 83 3 46 2 82 18 55 15 88 –20 38 –16

Compressor

drive revolution

frequency

(rps)

65 56 30 62 32 84

Indoor

fan

HIGH HIGH

LOW

HIGH

LOW

HIGH

Indoor/Outdoor

temp. conditions

Indoor Outdoor

27/19 35/– 32/24 43/–

18/15.5 –15/–

(DB/WB) (°C)

20/– 7/6 30/– 24/18 15/––15/–

– 29 –

Page 30

4-1. Indoor Unit

RAV-SM1403DT-A, RAV-SM1603DT-A

4. WIRING DIAGRAM

Earth

screw

Earth screw

Power supply 220–240V~, 50Hz

Outdoor unit

Relay

43F3

Noise absorber

RED WHI BLK

1 2

1 2 3

WHIRED

Serial

L N

signal

Relay

43F2

Noise absorber

Relay

43F1

Noise absorber

WHIWHIWHI

BLKBLK

A B

Wired

remote controller

3P Connector (RED) (At the time of shipment)

RED

WHI

RED

BRW

RED WHI

L N

Earth

screw

Overheating protection switch

Power supply 220–240V~, 50Hz (Only use twin setting)

For twin setting,

please reconnect this 3P connector

to the R-S terminal 3P connector.

Internal wiring part of fan motor

BLK

WHI GRY RED

49F

YEL BLU

ORN

WHI

CN083 (WHI)

1 3

1 1 3 3 5 5

1 2

1 2 313

Fuse (T10A, 250V~)

RY004

CN034 (GRY)

CN309

(YEL)

Fuse

(T5A, 250V~)

CN067

(BLK)

CN066

(WHI)

CN041

(BLU)

CN51

(RED)

3P Connector (RED) (At the time of twin setting)

CN050

1 2 3 4 5

1 2 3 4 5 1 2

P.C. board

for TCC-LINK

(MCC-1440)

CN40 (BLU)

U3 U4

Relay terminal

Option

YEL BLU

ORN

Fan

(WHI)

(Normal)

99775 331

RY007

3 4 5

1 2 1 2

BRW BRW

BRW

WHI

1 3 4 5 6 9 1 3 4 5 6 7 9

WHI

HMLUL

RY006 RY002 RY001

RY005

Power supply

circuit

CN074

(WHI)

113

CN01 (WHI)

WHI

1 2 3 4 5 6

BLK

WHI

1 2 3 4 5 6 1 2 3 4 5 6

P.C. board

(MCC-1520)

1 2 3 4 5 6 1 2 3 4 5 6

BRW

GRY

(WHI) (WHI)

YEL

BLK

BLU

RED

ORN

GRY

CN033

CN068

(GRN)

(BLU)

113 1 3 1 2 3

P.C. board

(MCC-1403)

CN075

(WHI)

RED

ORN

CN02 (YEL)

RED

ORN

WHI

RED

YEL

WHI

1 3 4 5 7 9

(High satatic pressure)

Symbol

FM RC TR

TC, TCJ

49F RY002 RY005 RY006 RY007

43F1, 2, 3

Fuse Fuse

CS DP

CN061

(YEL)

1 2 3 4 5 61 2 3 4 51 2 3 4 5

1. indicates the terminal board and the number indicates the terminal number.

2. The dashed line indicates wiring at the local site.

3. indicates P.C. board.

4. When install Drain Pump. please connect Float Switch Connector to Connector CN030.

5. When changing external static pressure, please reconnect Fan Motor connecter (WHI) to high static pressure connector (RED).

Relay

43F3

YEL

GRY

Fan motor Running capacitor Power transformer Indoor temp. sensor Indoor heat exchanger sensor Overheating protection switch (OFF: 135°C) Relay for drain pump motor

Relay for fan motor

T10A, 250V~ T5A, 250V~ (On P.C. board (MCC-1403))

Optional parts

Float switch Drain pump motor

WHI

1 33

CN104

(YEL)

CN102

(RED)

CN101

(BLK)

CN080

(GRN)

CN073

(RED)

CN070

(WHI)

CN060

(WHI)

CN032

(WHI)

1 2

(Fan drive)

Color Identification

RED : RED WHI : WHITE BLK : BLACK YEL : YELLOW BLU : BLUE

Relay

BLU

(RED)

Parts name

CN030

(RED)

121

TCJ

121

2 1

2 3

Outside

( )

error input

(EXCT)

2 1

(Filter)

2 6

5 4

Option

3 2 1

GRY : GRAY ORN : ORANGE BRW : BROWN GRN : GREEN

REDRED

43F2

ORN

BLK

Closed-end

connector

Relay

43F1

BLK

– 30 –

Page 31

• Single type

• Twin type

Power supply 220-240V

Single phase 50Hz

Wired remote controller

• Triple type

Outdoor unit

123

Indoor

unit

Power supply 220-240V

Single phase 50Hz

Wired remote controller

Outdoor unit

123

Indoor unit

No.1 (Master)

Earth

screw

123

Indoor unit

No.2 (Sub)

Power supply 220-240V

Single phase 50Hz

Earth screw

Wired remote controller

Outdoor unit

123

Indoor unit

No.1 (Header)

Earth

screw

Earth

screw

Earth

screw

123

Indoor unit

No.2 (Follower)

Earth

screw

Earth

screw

Earth

screw

123

Indoor unit

No.3 (Follower)

Notes)

1. : indicates a terminal block

2. Broken line and chain line indicate wiring at local site.

3. For the inner wiring diagram of the outdoor unit and the indoor unit, refer to the wir ing diagram of each model.

4. There is no polarity. It is no problem that the remote controller is connected to the indoor unit terminal block A and B reversely.

5. When using a wireless remote controller, connection of the remote controller to A and B terminal blocks are unnecessary. (Wire connection between indoor unit No.1 and No.2 is necessary.)

– 31 –

Page 32

4-2. Outdoor Unit

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

Fuse, 50A, 250V~

CN08

WHI RED WHI RED

RED

WHI

Reactor

20SF

PMV

WHI

CN700

YEL

CN702

WHI

131

1 2 3 4 5 6

CN01 CN02

1 2 3 4 5 6

Noise Filter

P.C. Board MCC-1551

CN01

RED

1 511

RY700

communication

Fuse, F01 T3, 15A, 250V~

CN02

BLK

CN04 CN03

P01

ORN

CN04

WHI

1 23 5

Serial

circuit

1 3 5 1 3

WHI RED

BLK

PNK

RED

1 2 3 4 5 1 2 3

CN301

WHI

RED

WHI

5 5

1 1

BLK

WHI

BLU

CN03

CN800

RED

Fuse, F300 T5A, 250V~

Fan motor drive circuit

CN300

WHI

1 2 3

1 2 3 4 5

1 2 35

1 2 3 4 5

WHI

CN06

WHI

1 2 3 4 5

T02 CT

YEL BLU

CN02 CN01

IPDU P.C. Board

MCC-1535

CN13

RED

CN04

WHI

YEL

1 3 1 34 5

CN05

WHI

3 4 5

BLU

CN607

YEL

1 2 1 2

CN606

RED CN605

CDB P.C. Board

MCC-1531

CN303

WHI

1 2 3 1 2 3

CN302

WHI

1 2 3 4 5 1 2 3 4 5

CAPA

CN20 CN21

RED

CN09

WHI

CN10

BLK

CN11

CN22

BLU

1 21 2 31 3 4 5 1 21 31

TS TE TO TD

1 311 2

CN604

WHI

2 2 1 1

1 2

CN601

WHI

CN801

WHI

1 2 3 4 5 6 7 8

CN500

BLU

49C

1 3 1 3

CN600

WHI

CN804

BLU

1 2 3 4 5

BLK

WHI

L N

RED

Fuse,

RED

WHI

T10A, 250V~

Earth screw Earth screw

1 2 3

Outdoor unit

Power supply

220 – 240V~, 50Hz

2 3

Indoor unit

Earth screw

1. indicates the terminal block. Alphanumeric characters in the cycle indicate the terminal No.

2. The two-dot chain line indicates the wiring procured locally.

3. indicates the P.C. board.

4. For the indoor unit circuit, refer to the wiring diagram of the indoor unit.

– 32 –

PMV

, FM TE TD TO TS

49C

20SF

Parts nameSymbol

Compressor Pulse motor valve Fan motor

Heat exchanger Temp. sensor Discharge Temp. sensor Outdoor Temp. sensor Suction Temp. sensor Compressor case thermostat 4-way valve coil Relay

Page 33

4-3. Fan Characteristics

Current value as a criterion, adjust the air volume value to become within the range of the chart below.

<RAV-SM1403DT-A> <RAV-SM1603DT-A>

Fan-tap

Static pressure (Pa)

(unit)

m³/h

CMM

m³/h

Med

CMM

m³/h

Low

CMM

300 300

250 250

200 200

150 150

Normal condition (ex factory)

100 100

50 50

Low Med.

0 0

1,500

30 40 50 100 200 225 250

l/s

2,300 2,270 2,250 2,100 1,600

l/s

638 631 625 583 513

38.3 37.8 37.5 35.0 30.8

Low

2,000 2,500 3,000 3,500 4,000 1,500 2,000 2,500 3,000 3,500 4,000

Static pressure (Pa)

3,480 3,300 2,500 2,330 2,100

966 916 694 647 583

58.0 55.0 41.6 38.8 35.0

2,700 2,670 2,500 2,100 1,900

750 742 694 583 527

45.0 44.5 41.6 35.0 31.6

High static pressure

Med.

6 6

5 5

4 4

3 3

2 2

Motor current (A)

1 1

0 0

Air volume (m³/h) Air volume (m³/h)

Fan-tap

Med

Low

(unit)

m³/h

l/s

CMM

m³/h

l/s

CMM

m³/h

l/s

CMM

Normal condition (ex factory)

Static pressure (Pa)

Low Med.

Static pressure (Pa)

30 40 50 100 200 225 250

3,740 3,500 2,800 2,600 2,300 1,038 972 777 722 638

62.3 58.3 46.6 43.3 38.3

3,000 2,970 2,790 2,260 2,000

833 825 775 627 555

50.0 49.5 46.5 37.6 33.3

2,600 2,580 2,550 2,380 1,850

722 717 708 66 513

43.3 43.0 42.5 39.6 30.8

High static pressure

Low

Med.

Motor current (A)

REQUIREMENT

Install the volume damper in the air outlet, and adjust the airflow to become within the range of the chart above.

n Wire connection change of fan motor

Wiring connection of the fan motor is connected that external static pressure makes to 200P during factory setting. In cases where external static pressure is required to change by the duct resistor, change the wiring connection. The fan motor connector is connected to the 9P white color connector during factory setting. When the fan motor is set to high static pressure, connect to the 9P red color connector such as arrow mar k. In addition, 9P red color connector is bundled along with wirings into the electric parts box.

Red color connector

RedRed Red

White color connector

Brown

White

1 3 4 5 6 9 1 3 4 5 6 7 9

Brown

White color connector

White GrayGray

1 3 4 5 7 9 1 3 4 5 6 7 9

Yelow

645

Yelow

43F3

645

Blue

43F2

Blue

Orange

645

43F1

Black

White

Red

Blue

Yelow

In case of normal condition (Factory setting)

Black

Orange

Gray

White

– 33 –

Red

Blue

Yelow

Black

Orange

Gray

In case of high static pressure

Closed end connector

Page 34

5. SPECIFICATIONS OF ELECTRICAL PARTS

5-1. Indoor Unit

RAV-SM1403DT-A, RAV-SM1603DT-A

No.

1 2 3 4

Parts name

Fan motor TA sensor TC sensor TCJ sensor

Type

SWF-240-600-4A

Lead wire length : 1200mm Ø6 size lead wire length : 1200mm Vinyl tube (Black) Ø6 size lead wire length : 1200mm Vinyl tube (Red)

5-2. Outdoor Unit

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

No.

Fan motor

Compressor

Reactor

Outdoor temp. sensor (To-sensor)

Parts name

Type

ICF-280-100-1R DA422A3F-25M

CH-65

—

Specifications

Output (Rated) 600 W 10 kΩ at 25°C 10 kΩ at 25°C 10 kΩ at 25°C

Specifications

Output (Rated) 100 W 3 phase, 4P, 3500 W

2.75 – 3.15 mH, 27.8 ± 1.9 V 10 kΩ at 25°C

Heat exchanger sensor (Te-sensor)

Suction temp. sensor (Ts-sensor)

Discharge temp. sensor (Td-sensor)

Fuse (Switching power (Protect))

Fuse (Inverter, input (Current protect))

4-way valve solenoid coil

Compressor thermo. (Protection)

Coil (Pulse Motor Valve)

— — — — —

STF-01AJ502EJ

US-622

UKV-25D100

10 kΩ at 25°C 10 kΩ at 25°C 50 kΩ at 25°C T3.15 A, AC 250 V 50 A, AC 250 V AC 220 – 240 V OFF : 125 ± 4°C, ON : 90 ± 5°C

—

– 34 –

Page 35

6. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC (R410A) which does not damage the ozone layer.

The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time.

The next section describes the precautions for air conditioner using the new refrigerant.

Conforming to contents of the next section together with the general cautions included in this manual, perform the correct and safe work.

6-1. 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 necessar y 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 refr igeration gas leakage occurs during installation/servicing, be sure to ventilate fully.

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

4. When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle.

Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture or personal injury may be caused.

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

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

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

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

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

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

8. Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician.

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

6-2. Refrigerant Piping Installation

6-2-1. 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.

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

1. Copper Pipes It is necessary to use seamless copper pipes

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

Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface).

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

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

Thicknesses of copper pipes used with R410A are as shown in Table 6-2-1. Never use copper pipes thinner than 0.8mm even when it is available on the market.

NOTE:

Refer to the “6-6. Instructions for Re-use Piping of R22 or R407C”.

– 35 –

Page 36

Table 6-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter

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

1. Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 6-2-3 to 6-2-5 below.

b) Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose diameter is larger than 20 mm. Thicknesses of socket joints are as shown in Table 6-2-2.

Outer diameter (mm)

6.4

9.5

12.7

15.9

Table 6-2-2 Minimum thicknesses of socket joints

R410A R22

0.80 0.80

1.00 1.00

Nominal diameter

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

Reference outer diameter of

copper pipe jointed (mm)

6.4

9.5

12.7

15.9

Minimum joint thickness

(mm)

0.50

0.60

0.70

0.80

6-2-2. Processing of Piping Materials

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

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

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.

– 36 –

Page 37

c) Insertion of Flare Nut d) Flare Processing

Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conventional flare tool. Flare processing dimensions differ according

to the type of flare tool. When using a conventional flare tool, be sure

to secure “dimension A” by using a gauge for size adjustment.

Table 6-2-3 Dimensions related to flare processing for R410A / R22

Nominal

diameter

Outer

diameter

(mm)

Thickness

(mm)

Flare tool for

R410A, R22

clutch type

Conventional flare tool

Clutch type Wing nut type

ØD

Fig. 6-2-1 Flare processing dimensions

A (mm)

Conventional flare tool

(R410A)

Clutch type Wing nut type

(R22)

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

Nominal

diameter

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

6.4

9.5

12.7

15.9

Table 6-2-4 Flare and flare nut dimensions for R410A

Outer diameter

(mm)

6.4

9.5

12.7

15.9

0.8

1.0

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

Thickness

(mm)

0.8

1.0

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

Dimension (mm)

ABCD

9.1 9.2 6.5 13 17

13.2 13.5 9.7 20 22

16.6 16.0 12.9 23 26

19.7 19.0 16.0 25 29

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

Flare nut width

(mm)

Nominal

diameter

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

Table 6-2-5 Flare and flare nut dimensions for R22

Outer diameter

(mm)

6.4

9.5

12.7

15.9

19.0

Thickness

(mm)

0.8

1.0

Dimension (mm)

ABCD

9.1 9.2 6.5 13 17

13.0 13.5 9.7 20 22

16.2 16.0 12.9 20 24

19.4 19.0 16.0 23 27

23.3 24.0 19.2 34 36

– 37 –

Flare nut width

(mm)

Page 38

45˚to 46˚

B A

43˚to 45˚

Fig. 6-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions a) Make sure that the flare and union portions do not have any scar or dust, etc. b) Correctly align the processed flare surface with the union axis. c) Tighten the flare with designated torque by means of a torque wrench.

The tightening torque for R410A is the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur. When it is strong, the flare nut may crack and may be made non-removable. When choosing the tightening torque, comply with values designated by manufacturers. Table 6-2-6 shows reference values.

NOTE:

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

Nominal

diameter

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

Table 6-2-6 Tightening torque of flare for R410A [Reference values]

Outer diameter

(mm)

6.4

9.5

12.7

15.9

Tightening torque

N•m (kgf•m)

14 to 18 (1.4 to 1.8) 33 to 42 (3.3 to 4.2) 50 to 62 (5.0 to 6.2) 63 to 77 (6.3 to 7.7)

Tightening torque of torque

wrenches available on the market

N•m (kgf•m)

16 (1.6), 18 (1.8)

42 (4.2) 55 (5.5) 65 (6.5)

– 38 –

Page 39

6-3. Tools

6-3-1. Required T ools

Refer to the “4. T ools” (Page 8)

6-4. Recharging of Refrigerant

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

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

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

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

Connect the charge hose of 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.

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.

(For refrigerant charging, see the figure below.)

1) Never charge refrigerant exceeding the specified amount.

2) If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.

3) Do not carry out additional charging. When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and may cause a rupture or personal injury.

(INDOOR unit)

Refrigerant cylinder

(With siphon pipe)

Check valve

Open/Close valve

for charging

Electronic balance for refrigerant charging

Fig. 6-4-1 Configuration of refrigerant charging

(Liquid side)

(Gas side)

– 39 –

(OUTDOOR unit)

Opened

Closed

Service port

Page 40

1) Be sure to make setting so that liquid can be charged.

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

It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the

cylinder upside down if cylinder is not equipped with siphon.

[ Cylinder with siphon ] [ Cylinder without siphon ]

Refrigerant

cylinder

Gauge manifold

OUTDOOR unit

cylinder

Refrigerant

Gauge manifold

OUTDOOR unit

Electronic

balance

R410A refrigerant is HFC mixed refrigerant. Therefore, if it is charged with gas, the

composition of the charged refrigerant changes and the characteristics of the equipment varies.

6-5. Brazing of Pipes

6-5-1. 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.

Fig. 6-4-2

Electronic

balance

Siphon

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

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

2. Phosphor bronze brazing filler

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

3. Low temperature brazing filler

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

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

6-5-2. Flux

1. Reason why flux is necessary

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

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

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

– 40 –

Page 41

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature.

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

• It is easy to remove slag after brazing.

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

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

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

3. Types of flux

• Noncorrosive flux

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

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

• Activated flux

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

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

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

6-5-3. 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 flow.

Never use gas other than Nitrogen gas.

1. Brazing method to prevent oxidation

1) Attach a reducing valve and a flo w-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.

Piping

material

Copper - Copper

Copper - Iron

Iron - Iron

Used brazing

filler

Phosphor copper

Silver Silver

Used

flux

Do not use

Paste flux Vapor 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.

Flow meter

Stop valve

Nitrogen gas

cylinder

From Nitrogen cylinder

Pipe

Nitrogen gas

Rubber plug

Fig. 6-5-1 Pre vention of oxidation during brazing

– 41 –

Page 42

6-6. Instructions for Re-use Piping of R22 or R407C

Instruction of Works: The existing R22 and R407C piping can be reused for our digital inverter R410A products installations.

NOTE)

Confirmation of existence of scratch or dent of the former pipes to be applied and also confirmation of reliability of the pipe strength are conventionally referred to the local site.

If the definite conditions can be cleared, it is possible to update the existing R22 and R407C pipes to those for R410A models.

6-6-1. Basic Conditions Needed to Reuse the

Existing Pipe

Check and observe three conditions of the refrigerant piping works.

1. Dry (There is no moisture inside of the pipes.)

2. Clean (There is no dust inside of the pipes.)

3. Tight (There is no refrigerant leak.)

6-6-2. Restricted Items to Use the Existing Pipes

In the following cases, the existing pipes cannot be reused as they are. Clean the existing pipes or exchange them with new pipes.

1. When a scratch or dent is heavy, be sure to use the new pipes for the wor ks.

2. When the thickness of the existing pipe is thinner than the specified “Pipe diameter and thickness” be sure to use the new pipes for the wor ks.

• The operating pressure of R410A is high

(1.6 times of R22 and R407C). If there is a scratch or dent on the pipe or thinner pipe is used, the pressure strength is poor and may cause breakage of the pipe at the worst.

∗ Pipe diameter and thickness (mm)

Pipe outer diameter

R410A

Thickness

• In case that the pipe diameter is Ø12.7 mm or less

and the thickness is less than 0.7 mm, be sure to use the new pipes for works.

3. The pipes are left as coming out or gas leaks. (Poor refrigerant)

• There is possibility that rain water or air including

moisture enters in the pipe.

4. Refrigerant recovery is impossible. (Refrigerant recovery by the pump-down operation on the existing air conditioner)

R22

(R407C)

Ø6.4 Ø9.5 Ø12.7 Ø15.9 Ø19.0

0.8 0.8 0.8 1.0 1.0

• There is possibility that a large quantity of poor

oil or moisture remains inside of the pipe.

5. A dryer on the market is attached to the existing pipes.

• There is possibility that copper green rust

generated.

6. Check the oil when the existing air conditioner was removed after refrigerant had been recovered. In this case, if the oil is judged as clearly different compared with normal oil

• The refrigerator oil is copper rust green :

There is possibility that moisture is mixed with the oil and rust generates inside of the pipe.

• There is discolored oil, a large quantity of the

remains, or bad smell.

• A large quantity of sparkle remained wear-out

powder is observed in the refrigerator oil.

7. The air conditioner which compressor was exchanged due to a faulty compressor. When the discolored oil, a large quantity of the remains, mixture of foreign matter, or a large quantity of sparkle remained wear-out powder is observed, the cause of trouble will occur.

8. Installation and removal of the air conditioner are repeated with temporary installation by lease and etc.

9. In case that type of the refrigerator oil of the existing air conditioner is other than the following oil (Mineral oil), Suniso, Freol-S, MS (Synthetic oil), alkyl benzene (HAB, Barrel-freeze), ester series, PVE only of ether series.

• Winding-insulation of the compressor may

become inferior.

NOTE)

The above descriptions are results of confirmation by our company and they are views on our air conditioners, but they do not guarantee the use of the existing pipes of the air conditioner that adopted R410A in other companies.

6-6-3. Branching Pipe for Simultaneous

Operation System

• In the concurrent twin, triple systems, when TOSHIBA-

specified branching pipe is used, it can be reused. Branching pipe model name:

RBC-TWP30E-2, RBC-TWP50E-2, RBC-TRP100E On the existing air conditioner for simultaneous operation system (twin, triple systems), there is a case of using branch pipe that has insufficient compressive strength. In this case please change it to the branch pipe for R410A.

6-6-4. Curing of Pipes

When removing and opening the indoor unit or outdoor unit for a long time, cure the pipes as follows:

• Otherwise rust may generate when moisture or

foreign matter due to dewing enters in the pipes.

• The rust cannot be removed by cleaning, and a new

piping work is necessary.

Place position

Outdoors

Indoors

Term

1 month or more

Less than 1 month

Every time

Curing manner

Pinching

Pinching or taping

– 42 –

Page 43

6-6-5. Final Installation Checks

Is there no scratch or dent on the existing pipes?

Is it possible to operate the existing air conditioner?

YES

∗ After the existing air conditioner operated in cooling mode for approx. 30 minutes or longer*, recover the refrigerant.

∗ For cooling the pipes and recovering of oil

• Refrigerant recovery: Pump down method

∗ Remove the existing air conditioner from the piping and carry out flashing (nitrogen pressure 0.5 Mpa) to remove the remains inside of the pipe.

Note] In case of twin, also be sure to flash the branching pipe.

Was not largely discolored oil or

a large quantity of remains discharged?

(When the oil deteriorates, the color of the

oil changes to muddy and black color.)

YES

Existing pipe: NO * Use a new pipes.

Nitrogen gas pressure 0.5 Mpa

(If there is discharge of remains, it is judged that there is a large quantity of remains.)

Clean the pipes or use the new pipes.

If you are in trouble of pipe cleaning, please contact us.

 Connect the indoor/outdoor units to the existing pipe.

• Use a flare nut attached to the main unit for the indoor/outdoor units. (Do not use the flare nut of the existing pipe.)

• Re-machine the flare machining size to size for R410A.

 In case that the gas pipe Ø19 mm is used for the outdoor unit of SM803 (3 HP) or higher: (Gas pipe size of our R410A model 3 to 6 HP is Ø15.9 mm)

→ Turn the existing pipe switch on the cycle control P.C board of the outdoor unit to ON side. At shipment from factory OFF → ON for existing pipe (Refer to the table below.) (Be sure to set the contents in the table below in order to restrict the refrigerating cycle pressure of the equipment in the pipe standard.)

Existing pipe SW

Switch

4, 5 HP

6 HP

Bit 3 of SW802 → ON Bit 5 of SW801 → ON

∗ (Airtight test), Vacuum dry, Refrigerant charge, Gas leak check

Piping necessary to change the flare nut/ machining size due to pipe compression.

1) Flare nut width: H

Copper pipe outer dia.

For R410A

For R22

Ø6.4

Same as above

Ø9.5

Ø12.7

2) Flare machining size: A

Copper pipe outer dia.

For R410A

For R22

Becomes large a little for R410A

Do not apply the refrigerator oil to the flare surface.

Ø6.4

9.1

Ø9.5

13.2

Ø12.7

16.6

Ø15.9

2724

Ø15.9

19.7

(mm)

Ø19.0

Same

as above

(mm)

Ø19.0

24.0

23.319.416.213.09.0

Trial run

– 43 –

Page 44

6-6-6. Handling of Existing Pipe

When using the existing pipe, carefully check it for the following:

• Wall thickness (within the specified range)

• Scratches and dents

• Water, oil, dirt, or dust in the pipe

• Flare looseness and leakage from welds

• Deter ioration of copper pipe and heat insulator

Cautions for using existing pipe

• Do not reuse the flare to prevent gas leak. Replace it with the supplied flare nut and then process it to a flare.

• Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean. If discolored oil or much residue is discharged, wash the pipe.

• Check welds, if any, on the pipe for gas leak. When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.

• The pipe has been open (disconnected from indoor unit or outdoor unit) for a long period.

• The pipe has been connected to an outdoor unit that does not use refr igerant R22, R410A or R407C.

• The existing pipe must have a wall thickness equal to or larger than the following thickness.

Reference outside diameter

(mm)

Ø9.5 Ø15.9 Ø19.1

Wall thickness

(mm)

0.8

1.0

• Never use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.

RAV-SP1404A T-E, RAV -SP1404ATZ-E, RAV-SP1404ATZG-E

• To use an existing Ø19.1 mm pipe, set bit 3 of SW802 (switch for existing pipe) on the P.C. board of the outdoor unit to ON.

When shipped from factory When using existing pipe

In this case, the heating performance may be reduced depending on the outside air temperature and room temperature.

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E

• To use an existing Ø19.1 mm pipe, set bit 5 of SW801 (switch for existing pipe) on the P.C. board of the outdoor unit to ON.

In this case, the heating performance may be reduced depending on the outside air temperature and room temperature.

1234

432651

SW802

SW801 No.5

1234

432651

– 44 –

Page 45

6-6-7. Recovery Method of Refrigerant

RAV-SP1404AT(Z)(ZG)-E

• Use the refr igerant recovery switch SW801 on the P.C. board of the outdoor unit to recover refrigerant when the indoor unit or outdoor unit is moved.

Procedure

1. Tur n on the power of the air conditioner.

2. Select the FAN mode for indoor unit operation

with the remote controller.

3. Set SW804 on the P.C. board of the outdoor unit

to all OFF, and then push SW801 for one second or more.

The air conditioner enters the forced cooling mode for up to 10 minutes.

Operation or handling the valve to recover refrigerant during this time period.

4. Upon completion of refr igerant recovery, close

the valve and push SW801 for at least one second to stop operation.

5. Turn off the power.

Refrigerant recovery switch SW801

Optional connector CN610

Special operation select switch SW804

Existing pipe switch SW802

P.C. board

1234

RAV-SM1603AT(Z)(ZG)-E

• Use the refr igerant recovery switch SW802 on the P.C. board of the outdoor unit to recover refrigerant when the indoor unit or outdoor unit is moved.

Procedure

1. Turn on the power of the air conditioner.

2. Select the FAN mode for indoor unit operation

with the remote controller.

3. Press the refrigerant recovery switch SW802 on

the P.C. board of the outdoor unit to drive the air conditioner into the forced cooling mode for up to 10 minutes.

Open the valve to start refrigerant recovery.

4. Upon completion of refr igerant recovery, close

the valve and press SW802 for at least one second to stop operation.

5. Turn off the power.

Outdoor unit P.C. board

SW802 for refrigerant recovery

123456

SW801 for existing pipes

DANGER

Take care for an electric shock because the P.C.board is electrified.

– 45 –

Page 46

6-7. Tolerance of Pipe Length and Pipe Head

n Twin system

Refrigerant pipe specification

Pipe length

(one way)

Height

difference

Total length (L + a or L + b)

Branch pipe length (a, b)

Maximum difference between indoor units

(b – a, or a - b)

Between indoor units ( ∆ h)

Between indoor unit When outdoor unit heigher (H)

and outdoor unit When outdoor unit lower (H)

Number of bent portions

Indoor unit A

Indoor unit B

∆h

Distributor

50 m 15 m

10 m

0.5 m 30 m 30 m

10 m or less

Branch pipeaBranch pipe

Main pipe

Outdoor unit

CAUTION

When planning a layout for Units A and B, comply with the following:

1. The lengths after branching (“a” and “b”) should be equal if feasible. Install Units A and B so that the difference of the branching lengths becomes less than 10m if the lengths

cannot be equal due to the branch pipe position.

2. Install Units A and B on the same level. If Units A and B cannot be installed on the same lev el, the difference in level should be limited to 0.5m or less.

3. Be certain to install Units A and B in the same room. Units A and B cannot be operated independently each other.

– 46 –

Page 47

n Triple system

Refrigerant pipe specification

Total length (L + a, L +b, L+c)

Pipe length

(one way)

Height

difference

Between indoor unit When outdoor unit heigher (H)

and outdoor unit When outdoor unit lower (H)

Number of bent portions

Branch pipe length (a, b, c)

Maximum difference between indoor units

(|a – b|, |b – c|, |c – d|)

Between indoor units ( ∆ h)

Indoor unit C Indoor unit B

Branch pipe Branch pipe

50 m 15 m

10 m

0.5 m 30 m 30 m

10 m or less

Indoor unit A

∆ h

Branch pipe

Distributor

Main pipe

Outdoor unit

CAUTION

When planning a layout for Units A, B and C, comply with the following:

1. The lengths after branching (“a” and “b”, “b” and “c”, “a” and “c”) should be equal if feasible. Install Units A, B and C so that the difference of the branching lengths becomes less than 10m if the

lengths cannot be equal due to the branch pipe position.

2. Install Units A, B and C on the same level. If Units A, B and C cannot be installed on the same level, the difference in level should be limited to 0.5 m

or less.

3. Be certain to install Units A and B and C in the same room. Units A, B and C cannot be operated independently each other.

– 47 –

Page 48

6-8. Additional Refrigerant Amount

n Twin system

Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of calculations by the following formula and operate the air conditioner as it is.

Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg)

+ Branch piping additional refrigerant amount (kg)

αα

α × (L – 18) +

αα

α : Additional refrigerant amount per meter of actual main piping length (kg)

αα γγ

γ : Additional refrigerant amount per meter of actual branch piping length (kg)

γγ

L : Actual length of main piping (m) a, b : Actual length of branch piping (m)

γγ

γ × (a + b – 4)

γγ

Standard piping length

Main piping Branch piping

18 m 2 m

Connecting pipe diameter

Lab

Ø9.5 Ø6.4 Ø6.4

Indoor unit B

Distributor

Branch pipeaBranch pipe

Additional refrigerant amount per Meter (kg/m)

αα

0.040 — 0.020

Indoor unit A

∆h

ββ

γγ

Main pipe

Outdoor unit

CAUTION

1. Be certain to wire the additional refrigerant amount, pipe length (actual length), head and other specification on the nameplate put on the outdoor unit for recording.

2. Seal the correct amount of additional refr igerant in the system.

– 48 –

Page 49

n Triple system

Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of calculations by the following formula and operate the air conditioner as it is.

Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg)

+ Branch piping additional refrigerant amount (kg)

αα

α × (L – 28)} + {

αα

α : Additional refrigerant amount per meter of actual main piping length (kg)

αα γγ

γ : Additional refrigerant amount per meter of actual branch piping length (kg)

γγ

L : Actual length of main piping (m) a, b, c : Actual length of branch piping (m)

γγ

γ × (a + b + c – 6)}

γγ

Connecting pipe diameter

Labc

Ø9.5 Ø6.4 Ø6.4 Ø6.4

Indoor unit C Indoor unit B

Branch pipe Branch pipe

Additional refrigerant amount per Meter (kg/m)

αα

0.04 — 0.02

ββ

Indoor unit A

Branch pipe

γγ

∆ h

Distributor

Main pipe

Outdoor unit

CAUTION

1. Be certain to wire the additional refrigerant amount, pipe length (actual length), head and other specification on the nameplate put on the outdoor unit for recording.

2. Seal the correct amount of additional refr igerant in the system.

– 49 –

Page 50

6-9. Piping Materials and Sizes

n Twin system

Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40mg/10m or less in the amount of oil stuck on inner walls of pipe and 0.8mm in pipe wall thickness for diameters for diameters 6.4, 9.5 and12.7mm and 1.0mm, for diameter 15.9mm. Never use pipes of thin wall thickness such as 0.7mm.

In parentheres ( ) are wall thickness

Gas side

Main pipe

Branch pipe

Pipe side

Main pipe

Liquid side

Branch pipe

Ø15.9 (1.0)

Ø12.7 (0.8) Ø9.5 (0.8) Ø6.4 (0.8)

n Triple system

12.7 mm and 1.0 mm, for diameter 15.9 mm. Never use pipes of thin wall thickness such as 0.7 mm.

<Between outdoor unit and distributor> [Unit: mm]

Outdoor unit

Main pipe

Gas side

Liquid side

Ø15.9 (1.0)

Ø9.5 (0.8)

∗ ( ): Pipe wall thickness

<Between distributor and indoor unit> [Unit: mm]

Indoor unit

Branch pipe

∗ ( ): Pipe wall thickness

Gas side

Liquid side

SM56 type

Ø12.7 (0.8)

Ø6.4 (0.8)

– 50 –

Page 51

6-10. Branch Pipe

n Twin system

Now the refrigerant pipe is installed using branch pipes supplied as accessories.

• Bend and adjust the refr igerant piping so that the branch pipes and pipe after branching become horizontal.

• Fix the branch pipes onto a wall in a ceiling or onto a column.

• Provide a straight pipe longer than 500mm in length as the main piping of the branches.

OK OK

Horizontal

500mm or

Horizontal

NO GOOG NO GOOG

Inclination

6-11. Distributor

n Triple system

Now the refrigerant pipe is installed using distributor supplied as accessories.

• Bend and adjust the refr igerant piping so that the distributor and pipe after branching become horizontal.

• Fix the distributor onto a wall in a ceiling or onto a column.

• Provide a straight pipe longer than 500 mm in length as the main piping of the branches.

Inclination

Branch pipes are horizontal and collective pipes are vertical

Branch pipes and collective pipes are horizontal

Branch pipe Branch pipe

Branch pipes are horizontal and collective pipes are vertical

Branch pipes and collective pipes are horizontal

Collective pipeCollective pipe

Provide a straight area of 500 mm or more on the main pipe side of the branch pipe (for both gas pipe and liquid pipe sides).

NO GOOG

Tilt

500 mm or more

Be sure to install the pipes horizontally after branching.

n Air Purging

For the complete information, read the installation manual for outdoor units of air conditioner.

– 51 –

Page 52

7. INDOOR CONTROL CIRCUIT

7-1. Indoor Controller Block Diagram

RAV-SM1403DT-A, RAV-SM1603DT-A

7-1-1. Connection of Main (Sub) Remote Controller

Indoor unit #1

Network adapter (Option)

Network adapter P.C. board (MCC-1401)

X Y

AI net

communication

circuit

Remote controller

DC5V

Power supply

circuit

Transformer

communication

circuit

CPU

H8/3687

Switch

set

Main (Sub) Master remote controller

Display part

Indoor control P.C. board (MCC-1403)

DC20V

Power supply

circuit

(Max. 2 units)

LCD

LED

Remote controller

communication

circuit

Remote controller

communication

circuit

DC5V

DC12V

CPU

DC5V

Driver

Function

setup

Key switch

Power supply

circuit

H8/3039

CPU

CN1

CN2

Display part

LCD

Power supply

circuit

EEPROM

TA sensor

TC sensor

TCJ sensor

Float input

Weekly timer

Driver

LCD

CPU

DC5V

#2 #3

Same as

left ∗2

Function

setup

Key switch

Secondary

battery

Same as

left ∗2

Central control

remote controller

(Option)

Drain pump

Indoor

fan motor

Transformer

Fan motor

relay circuit

Outside output

START

ALARM

READY

THERMO ON

COOL

HEAT

FAN

AC synchronous

signal input circuit

123

Outdoor unit

Serial send/

receive circuit

123

Outdoor

unit

123

Outdoor

unit

Max. 8 units are connectable. ∗1

∗1 However when mounting a network adapter while 2 main (sub) remote controllers are connected, Max. 7 units

are connectable.

∗2 A network adapter is mounted to only 1 unit. ∗3 Connection of weekly timer to the sub remote controller is unavailable.

– 52 –

Page 53

7-2. Control Specifications

No.

When power supply is reset

Operation mode selection

Item

Outline of specifications

1) Distinction of outdoor unit When the power supply is reset, the outdoors are distinguished

and the control is selected according to the distinguished result.

1) Based on the operation mode selecting command from the remote controller, the operation mode is selected.

Remote controller

command

STOP

FAN

COOL

HEAT

AUTO

Air conditioner stops. Fan operation Cooling operation Heating operation

• COOL/HEAT operation mode is automatically selected by Ta, Ts and To for operation.

• The operation is performed as shown in the following figure according to Ta value at the first time only. (In the range of Ts + + 1, Cooling thermo. OFF (Fan)/Setup air volume operation continues .)

Control outline

α –1 < T a < Ts + α

Remarks

Ta: Room temp. Ts: Setup temp. To: Outside temp.

Cooling

+1.0

Ts +

(˚C)

•

α is corrected according to the outside temperature.

Outside temp.

24 > To ³ 18°C

-1.0

No To

To ³ 24°C

To < 18°C

To error

operation

Cooling thermo. OFF (Fan)

• Setup air volume

Heating operation

Correction value (a)

–1K

+1K

k = deg

– 53 –

Page 54

No.

Item

Room temp. control

Outline of specifications

1) Adjustment range: Remote controller setup temperature (°C)

Wired type

Wireless type

COOL

18 to 29 18 to 30

HEAT

18 to 29 16 to 30

AUTO

18 to 29 17 to 27

Remarks

Automatic capacity control

(GA control)

2) Using the Item code 06, the setup temperature in heating operation can be corrected.

Setup data

Setup temp. correction

0246

+0°C+2°C+4°C+6°C

Setting at shipment

Setup data 2

1) Based on the difference between Ta and Ts, the operation frequency is instructed to the outdoor unit.

2) Cooling operation Every 90 seconds, the room temperature difference

between temperature detected by Ta and Ts and the varied room temperature value are calculated to obtain the correction value of the frequency command and then the present frequency command is corrected.

Ta (n) – Ts (n) : Room temp. difference n : Counts of detection Ta (n-1) – Ts (n) : Varied room temp. value n – 1:

Counts of detection of 90 seconds before

3) Heating operation Every 1 minute (60 sec.), the room temperature differ-

ence between temperature detected by Ta and Ts and the varied room temperature value are calculated to obtain the correction value of the frequency command and then the present frequency command is corrected.

Ts (n) – Ta (n) : Room temp. difference n : Counts of detection Ta (n) – Ta (n – 1): Varied room temp. value n – 1 : Counts of detection of 1 minute before

Shift of suction temperature in heating operation

Automatic cooling/ heating control

1) The judgment of selecting COOL/HEAT is carried out as shown below. When +1.5 exceeds against Tsh 10 minutes and after thermo.-OFF, heating operation (Thermo. OFF) exchanges to cooling operation. Description in the parentheses shows an example of cooling ON/OFF.

+1.5

Tsc

Tsh

-1.5

Cooling

(Cooling ON)

(Cooling OFF)

Heating

(˚C)

Tsc: Setup temp. in

cooling operation

Tsh: Setup temp. in

heating operation + temp. correction of room temp. control

When –1.5 lowers against Tsc 10 minutes and after thermo. OFF, cooling operation (Thermo. OFF) exchanges to heating operation.

2) For the automatic capacity control after judgment of cooling/heating, see Item 4.

3) For temperature correction of room temp. control in automatic heating, see Item 3.

– 54 –

Page 55

No.

Air speed selection

Item

Outline of specifications

1) Operation [HH], [L] or [AUTO] is performed by command

from the remote controller.

2) The air speed is varied with difference between Ta and

Ts while the air speed is set to [AUTO].

<COOL>

+1.5

+1.0

+0.5

Tsc

–0.5

Ta (˚C)

Normal cooling

(High wind)HH(High wind)

(Low wind)HH(High wind)

Cooling in

Cooling/Heating

[AUTO]

(Low wind)

<HEAT>

+0.5

Tsc

–0.5

–1.0

–1.5

Ta (˚C)

Normal heating

UL (Ultra low wind) only

during compressor-OFF

(Low wind)L(Low wind)

(High wind)HH(High wind)

(High wind)

Cooling in

Cooling/Heating

[AUTO]

(High wind)

Remarks

HH > L > UL

7 Cool air discharge

preventive control

3) If ther mostat is turned off during heating operation, the

mode changes to [UL] or [STOP].

4) If T a ≥ 25°C when the heating operation has started or

when defrost operation has been cleared, the air conditioner operates with [L] mode or higher mode for 1 minute after Tc entered in A zone of the cooling air discharge preventive control (Item 7).

5) In automatic cooling/heating operation, the mode enters

in [AUTO].

1) In heating operation, the indoor fan is controlled based

on the detected temperature of Tc sensor or Tcj sensor. As shown below, the upper limit of the revolution frequency is restricted.

However B zone is assumed as C zone for 6 minutes and after when the compressor activated.

In defrost operation, the control value of Tc is shifted by 6°C.

(°C)

Tcj

28 26

20 16

OFF

D zone C zone

B zone A zone

STOP operation is the cooling air discharge prev entive control by Tc.

Tc: Indoor heat

exchanger sensor temperature

Display: [AUTO]

In D zone, the priority is given to air speed selection setup of remote controller.

In A and B zones while thermo is ON, [PRE-HEAT (Heating ready)] is displayed.

– 55 –

Page 56

No.

Freeze preventive control (Low temperature release)

Item

Outline of specifications

1) The cooling operation (including Dry operation) is performed as follows based on the detected temperature of Tc sensor or Tcj sensor.

When [J] zone is detected for 6 minutes (Following figure), the commanded frequency is decreased from the real operation frequency.

After then the commanded frequency changes every 30 seconds while operation is performed in [J] zone.

In [K] zone, time counting is interrupted and the operation is held.

When [ I ] zone is detected, the timer is cleared and the operation returns to the normal operation.

If the commanded frequency becomes S0 because the operation continues in [J] zone, the return temperature A is raised from 5°C to 12°C until [ I ] zone is detected and the indoor fan operates with [L] mode.

(˚C)

Remarks

Tcj: Indoor heat exchanger

sensor temperature

In heating operation, the freeze-preventive control works if 4-way valve is not exchanged and the following conditions are satisfied. (However the temperature for J zone dashing control is changed from 2°C to –5°C.)

• When

activation.

Q R

or R is established 5 minutes after

Tcn ≤ Tc (n – 1) – 5 Tcn < Tc (n – 1) – 1 and Tcn ≤ Ta < 5°C

Tcn:

Tc temperature when 5 minutes elapsed after activation

Tc (n – 1):

Tc temperature at start time

– 56 –

Page 57

No.

High-temp. release control

Item

Outline of specifications

1) The heating operation is performed as follows based on the detected temperature of Tc sensor or Tcj sensor.

• When [M] zone is detected, the commanded frequency is

decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [M] zone.

• In [N] zone, the commanded frequency is held.

• When [L] zone is detected, the commanded frequency is

returned to the original value by approx. 6Hz every 60 seconds.

Setup at shipment

Control temp. (°C)

56 (54) 52 (52)

Tcj

(˚C)Tc

M N

NOTE:

When the operation has started or when Tc or Tcj < 30°C at start of the operation or after operation star t, temperature is controlled between values in parentheses of A and B.

Remarks

However this control is ignored in case of the follower unit of the twin.

Same status as that when “thermostat-OFF” (status that the air conditioner enters in the room temp. monitor mode when the temperature reached the setup temperature on the remote controller)

Drain pump control

(Sold separately)

After-heat elimination

12 Frequency fixed

operation (Test run)

1) In cooling operation, the drain pump is usually operated.

2) If the float switch works while drain pump drives, the compressor stops, the drain pump continues the operation, and a check code is output.

3) If the float switch works while drain pump stops, the compressor stops and the drain pump operates. If the float switch keeps operating for approx. 4 minutes, a check code is output.

When heating operation stops, in some cases, the indoor fan operates with (L) for approx. 30 seconds.

1) When pushing [CHK] button for 4 seconds or more, [TEST] is displayed on the display screen and the mode enters in Test run mode.

2) Push [ON/OFF] button.

3) Using [MODE] button, set the mode to [COOL] or [HEAT].

• Do not use other mode than [COOL]/[HEAT] mode.

• During test run operation, the temperature cannot be

adjusted.

• An error is detected as usual.

• A frequency fixed operation is performed.

After the test run, push [ON/OFF] button to stop the operation. (Display in the displa y part is same as the procedure in Item 1.)

5) Push [CHK] button to clear the test run mode. ([TEST] display in the display part disappears and the status returns to the normal stop status.)

Check code [P10]

– 57 –

Page 58

No.

Filter sign display (Except wireless type)

∗ It is provided on the

separately sold type TCB-AX21E2.

Item

Outline of specifications

1) The operation time of the indoor fan is calculated, the filter reset signal is sent to the remote controller when the specified time (2500H) has passed, and it is displayed on LCD.

2) When the filter reset signal has been received from the remote controller, time of the calculation timer is cleared.

In this case, the measurement time is reset if the specified time has passed, and display on LCD disappears.

Remarks

[FILTER ] goes on. Specified time: 2500H

14 Central control mode

selection

Save operation15 1) Turn on

1) Setting at the centerl controller side enables to select the contents which can be operated on the remote controller at indoor unit side.

2) Setup contents

• 64 line central controller (TCB-SC642TLE2)

[Individual]: Operated on the remote controller

(Priority to second pushing)

[Central 1]: ON/OFF operation cannot be oper-

ated on the remote controller.

[Central 2]: ON/OFF, mode selection, temp. setup

operations cannot be operated on the remote controller.

[Central 3]: Mode selection and temp. setup

operations

cannot be operated on the

remote controller.

[Central 4]: Mode selection cannot be operated

on the remote controller.

∗ In case of the wireless type, the display lamp

does not change but the contents are same. If operating an item which is prohibited by the

central control mode from the remote controller, it is notified with the receive sound, Pi, Pi, Pi, Pi, Pi (5 times).

SAVE

button on the remote controller.

2) During operation of save operation,

SAVE

lights on

the wired remote controller.

3) During save operation, the current release control is performed with the restriction ratio set in EEPROM on the outdoor unit.

4) The restriction ratio can be set by keeping

SAVE

button pushed for 4 seconds or more on the remote controller.

5) When validating the save operation, the next operation starts with save operation valid because contents are held even when operation stops, operation mode changes or power supply is reset.

6) The restriction ratio can be set by changing the setup data of Item code (DN) [C2] in the range of 50 to 100% (every 1%, Setting at shipment: 75%).

Display at remote controller side (No display)

[Central ] goes on

[Central

] goes on

Operation and display also are unavailab le on the wired remote controller RBC-AMT31E and before.

Carry out setting operation during stop of the unit; otherwise

the unit stops

operation. For the setup operation,

refer to “How to set up contents of save operation” of Installation Manual.

The setting of the save operation differs according to combination of the outdoor units to be connected.

(Although the setting value of the remote controller varies on the display, the real operation of the air conditioner itself is “Fixed with 75%”.)

– 58 –

Page 59

7-3. Optional Connector Specifications of Indoor P.C. Board

Function

Ventilation output

Option output

Outside error input

Connector

No.

CN32

CN60

CN80

Pin No.

1 2 3

Specifications

(Open collector)

Defrost output

(Open collector)

Thermostat ON output

(Open collector)

Cooling output

(Open collector)

Heating output

(Open collector)

Fan output

(Open collector)

Outside error input

DC12V

Output

DC12V

Remarks

Setting at shipment: Interlock of ON by indoor unit operation, with OFF by stop operation

∗ The single operation setting by FAN button on the remote controller

is performed on the remote controller (DN [31] = 0000 → 0001)

ON when outdoor unit is defrosted

ON when real thermostat is on. (Compressor ON)

ON when operation mode is cooling system (COOL, DRY, Cooling/Heating automatic cooling)

ON when operation mode is heating system (HEAT, Cooling/Heating automatic heating)

ON when indoor fan is on. (When air cleaner is used) OFF while clean operation is performed.

Generate the warning code “L30” (continuously for 1 minute) and stop the operation forcibly.

AUT O up/ down grille (∗)

FILTER Option error / Humidifier setting (∗)

CHK Operation check

DISP Exhibition mode

EXCT Demand

CN20

CN70

CN71

CN72

CN73

1 2

Panel operation input

1 2 1 2 1 2

Panel up output (Open collector)

Panel down output

(Open collector)

Demand input

DC12V

The grille is controlled according to up/down operation from the remote controller.

∗ Setting of automatic up/down grille provided is performed on the

remote controller. (DN [30] = 0000 → 0001)

Selection of option error input (Protective operation display of device attached to outside) or Humidifier setting input (Vaporizing + Drain pump ON) Humidifier is set at shipment from factory.

∗ Setting of option error input is performed on the remote controller.

(DN [2A] = 0002 → 0001)

This check is used to check indoor operation. (Perf orms operation of indoor f an “H”, Louver horizontal and Drain pump ON without communication with outdoor and remote controller)

Communication is availab le by indoor unit and remote controller only.

Indoor unit forced thermostat OFF operation

∗ This option is not provided to oversea models.

– 59 –

Page 60

7-4. Indoor Print Circuit Board

RAV-SM1403DT-A, RAV-SM1603DT-A

<MCC-1403>

Power transformer (Primary side) (AC240V)

Power supply

Power transformer (Secondary side) (AC11V, 14V, 20V)

Microcomputer operation LED

PMV output

EEPROM

Indoor/Outdoor communication (Spare)

Indoor/Outdoor communication (Also used for communication of the central control system)

Remote controller power supply LED

– 60 –

Optional output

Drain pump output

Remote controller inter-unit wire

Optional power supply

AC fan output

EXCT

Filter/Option error input

TA sensor

Float SW ∗ Short plug is inserted

Outside error input

TC2 sensor

TCJ sensor

TCI sensor

DISP

CHK

Used for servicing

∗1 No function

Page 61

7-5. Outdoor Print Circuit Board

RAV-SM1603A T-E, RAV -SM1603ATZ-E, RAV-SM1603ATZG-E Inverter P.C. board <MCC-1535> [IPDU1]

Electrolytic condenser (–)

+12V Reactor

Electrolytic condenser (+)

Communication between

+5V

I/F and comp IPDU

Between fan IPDU and comp IPDU

Reactor

Compressor out put

+7V

GND

– 61 –

Page 62

Noise filter P.C. board <MCC-1551>

– 62 –

Page 63

Serial signal (To terminal block) CN02

AC input (To MCC-1535) CN01

Model selection jumpers Refrigerant recovery Switch SW802

EEPROM-IC IC801 P.M.V. CN702

Dip switch for service SW801

(Available only service P.C. board)

J800 to J803

Case thermo. switch CN500

<MCC-1531>

Communication signal (To MCC-1535) CN800

TD sensor CN600

TO sensor CN601

TE sensor CN604

TS sensor CN605

– 63 –

4-way valve CN700

Fan motor 2 (Lower) revolution CN302

Fan motor 2 (Lower) output CN303

DC15V input (To MCC-1535) CN04

DC320V input (To MCC-1535) CN03

Not use CN804

Fan motor 1 (Upper) revolution CN300

Fan motor 1 (Upper) output CN301

Page 64

8. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS

8-1. Outdoor Controls

8-1-1. Outline of Main Controls

1. Pulse Motor Valve (PMV) control

1) For PMV with 45 to 500 pulses during operation, respectively.

2) In cooling operation, PMV is controlled with the temperature diff erence betw een TS sensor and TC sensor.

3) In heating operation, PMV is controlled with the temperature diff erence betw een TS sensor and TE sensor.

4) For the temperature difference in items 2) and 3), 1 to 5K is aimed as the target in both cooling and heating operations.

5) When the cycle excessively rose in both cooling and heating operations, PMV is controlled by TD sensor. The aimed value is usually 92°C for SM160 in both cooling and heating operations.

REQUIREMENT

A sensor trouble may cause a liquid back-flow or abnormal overheat resulting in excessive shortening of the compressor life. In a case of trouble on the compressor, be sure to check there is no error in the resistance value an the refrigerating cycle of each sensor after repair and then start the operation.

2. Discharge temperature release control

1) This function controls the operation frequency, that is, lowers the operation frequency when the discharge temperature has not lower or the discharge temperature has rapidly risen during PMV control. It subdivides the frequency control up to a unit of 0.6 Hz to stabilize the cycle.

2) When the discharge temperature is detected in an abnormal stop zone, the unit stops the compressor and restarts after 2 minutes 30 seconds. The error counter is cleared when it has continued the operation for 10 minutes. If the abnormal stop zone has been detected by 4 times without clearing of counter, an error “P03” is displayed.

∗ The cause is considered as excessively little

amount of refrigerant, defective PMV, or clogging of cycle.

abcde

SM160

111 106 100 95 90

[°C]

TD [˚C]

Error stop ("P03" display with 4 times of error counts)

Frequency down

b c

Frequency holding

Frequency slow-up (Up to command)

As command is

Current [A]

Frequency down

Hold

3. Current release control

The output frequency and the output voltage are controlled by AC current value detected by T02 on the outdoor P.C. board so that input current of the inverter does not exceed the specified value.

Objective model

I1 value [A]

SM160

COOL HEAT

24.69 28.80

– 64 –

I1–0.5

Hold

Normal operation

Page 65

4. Outdoor fan control

Allocations of fan tap revolutions [rpm]

SM160

High

Low

W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF

250 260 260 320 380 480 500 530 610 640 660 720 720 720 780

——240 300 400 500 520 550 630 660 700 740 740 740 820

1) Cooling fan control

The outdoor fan is controlled by TE, TD, and TO sensors and also revolution frequency of the opera-

tion. The outdoor is controlled by every 1 tap of DC fan control (15 taps). Only during 60 seconds after the operation has started, the fan is fixed with the maximum fan tap

which corresponds to the zone in the following table. After then the fan is controlled by TE sensor temperature.

Considering a case that TE sensor has come out of the holder, the fan is controlled so that revolution

frequency of the fan increases regardless of TE if temperature of TD sensor has risen.

SM160

37 34

Operation with WE

TE [˚C]

+1 tap/20 seconds

rpm hold

–1 tap/20 seconds

(The operation frequency differs according to the model type.)

Temp. range

29°C 15 5

TO < 29°C

TO < 15°C

Below 30Hz Above 30 Hz below 45 Hz Above 45 Hz

Min. Max. Min. Max. Min. Max.

W5 WA W7 WC W9 WE W3 W7 W5 W9 W7 WB W2 W5 W4 W7 W6 W9

TD [˚C]

Operation with

maximum tap in

each zone

Usual fan control

TO < 5°C

TO < 0°C

–5

TO < –5°C

TO error

W1 W3 W3 W5 W4 W7 W1 W2 W2 W4 W3 W5

OFF OFF OFF W3 OFF W3

W1 WE W1 WE W1 WE

– 65 –

Page 66

2) Heating fan control

–2 tap/20 seconds –1 tap/20 seconds

rpm hold

+1 tap/20 seconds

–2 tap/20 seconds

STOP timer count

24 21 18 15

TE [˚C]

The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency.

(From Min. W1 to Max. are controlled according to the following table.) During 3 minutes after start-up, the fan is fixed

with the maximum fan tap corresponding to zone in the following table. After then the fan is controlled by temperature of TE sensor.

If status, TE > 24°C continues for 5 minutes, the

operation stops. This status is same to the usual Thermo-OFF which has no alarm display, and the fan restarts after 2 minutes and 30 seconds. This intermittent operation is not abnormal.

When the above status R occurs frequently, it

is considered that the filter of suction part of the indoor unit is stain. Clean the filter and then restart the operation.

(The operation frequency differs according to the model type. The case of SM110 is shown in the table below.)

Maximum

Temp. range

10°C

5 < TO < 10°C

TO < 5°C

TO error

Below 37 Hz

W7 WA WF WF

Above 37 Hz below 60 Hz

W8 WB WF WF

Above 60 Hz

W9 WC WF WF

5. Coil heating control

1) This control function heats the compressor by turning on the stopped compressor instead of a case heater. It purposes to prevent slac kness of the refrigerant inside of the compressor.

2) As usual, turn on power of the compressor for the specified time before a test run after installation, otherwise a trouble of the compressor may be caused.

As same as a test run, it is recommended to turn on power of the compressor beforehand when starting operation after power of the compressor has been interrupted for a long time.

3) A judgment for electricity is performed by TD and TO sensors. If TO sensor is defective, a backup control is automatically performed by TE sensor.

For a case of defective TO sensor, judge it with the outdoor LED display.

4) The power is turned off when TD is 30°C or more.

(In trouble of TO sensor)

TO [˚C]

TE [˚C]

Power-ON condition TD < 30˚C

18 15 10

SM160

30W and equivalent 40W and equivalent

No power-ON

Continuous ON (L)

Continuous ON (M)

– 66 –

No power-ON

18 12

Continuous ON (L)

Continuous ON (M)

* TO sensor is read in once per 15 minutes

REQUIREMENT

While heating the coil, the power sound may be heard. However it is not a trouble.

Page 67

6. Short intermittent operation preventive control

1) For 3 to 10 minutes after operation start, in some cases, the compressor does not stop to protect the compressor even if receiving the thermostat-OFF signal from indoor.

However it is not abnormal status. (The operation continuance differs according to the operation status.)

2) When the operation stops by the remote controller, the operation does not continue.

7. High pressure restraint TE control

1) Control to restraint abnormal rising of high pressure in cooling operation

2) Stop the compressor at TE ≥ 67°C and the error is counted by 1.

3) After 2 minutes and 30 seconds, if TE < 67°C, restart the compressor. When the operation continues for 10 minutes, the error count is cleared.

4) If TE ≥ 67°C was detected again within 10 minutes, add 1 to the error count and then repeat to restart the compressor.

5) When the error count 10 is detected, determine it as an error. Do not restart the compressor. The error “P04” is displayed.

6) After restart of the compressor, control the current release by lowering control value by 70% to 90% for minimum 30 minutes or more.

8. Over-current protective control

1) When the over-current protective circuit detected an abnormal current, stop the compressor.

2) Restart the compressor 2 minutes and 30 seconds after the error count 1 was indicated.

3) When the error is determined as the error count 8, do not restart the compressor. The error display is “H01”, “H02” or “P26”.

9. Current release value shift control

1) This control purposes to prevent trouble of the electronic parts such as G-Tr, etc of the inverter in the compressor driving system and trouble of the compressor.

2) This control corrects the current release control value (11) of item 3. by TO sensor value.

3) The correction amount is based on the following control diagram and correction amount table.

TO [˚C]

T + 8 T + 7 T + 5 T + 4 T + 2 T + 1

T – 1

I1 × a %

I1 × b %

I1 × c %

I1 × d %

Remains as I1

Correction amount

SM160 T a b c d

39°C

60 70 80 90

– 67 –

Page 68

10. Defrost control

A zone

B zone

C zone

D zone

In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition

in A zone to D zone. The defrost operation is immediately finished if TE sensor temperature has become 12°C or more, or it

also is finished when condition of 7°C < TE < 12°C has continued for 1 minute. The defrost operation is also finished when defrost operation has continued for 10 minutes even if TE sensor temperature has become 7°C or lower.

After defrost operation has finished, the compressor and the outdoor fan start heating operation after

stopped for approx. 50 seconds.

Start of heating operation

0 10 15 c ba d[min.]

TE [˚C]

–5

A zone

–10 –13

B zone

–18

∗

* The minimum TE value between 10 and 15 min utes after heating oper ation has started is stored in memory as TE0.

A zone B zone C zone D zone

Defrost operation is performed in this zone when TE0-TE Defrost operation is performed in this zone when TE0-TE Defrost operation is performed when this zone continued for T seconds. Defrost operation is performed when this zone continued for T seconds.

SM160

55 45 40

150

C zone

3 continued for T seconds.

D zone

– 68 –

Page 69

9. INDOOR UNIT TROUBLESHOOTING

9-1. Summary of Troubleshooting

1. Before troubleshooting

1) Required tools/instruments

• + and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check a) The following operations are normal.

1. Compressor does not operate.

• Is not 3-minutes delay (3 minutes after compressor OFF)?

• Is not the outdoor unit in standby status though the remote controller reached the setup temperature?

• Does not timer operate dur ing fan operation?

• Is not an overflow error detected on the indoor unit?

• Is not outside high-temperature operation controlled in heating operation?

2. Indoor fan does not rotate.

• Does not cool air discharge preventive control work in heating operation?

3. Outdoor fan does not rotate or air volume changes.

• Does not high-temperature release operation control work in heating operation?

• Does not outside low-temperature operation control work in cooling operation?

• Is not defrost operation performed?

4. ON/OFF operation cannot be performed from remote controller.

• Is not the control operation performed from outside/remote side?

• Is not automatic address being set up? (When the power is turned on at the first time or when indoor unit address setting is changed, the operation cannot be performed for maximum approx. 5 minutes after power-ON.)

• Is not being carr ied out a test run by operation of the outdoor controller?

b) Did you return the cabling to the initial positions? c) Are connecting cables of indoor unit and remote controller correct?

2. Troubleshooting procedure

When a trouble occurred, check the parts along with the following procedure.

Trouble Confirmation of check code display Check defective position and parts.

NOTE :

For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer noise is considered except the items to be checked. If there is any noise source, change the cables of the remote controller to shield cables.

→→

– 69 –

Page 70

– 70 –

9-2. Troubleshooting

9-2-1. Check Code List (Indoor)

(Indoor unit detected)

Check code indication

TCC-LINK central &

Wired remote contr oller

E03 E04

E08 E10

E18 F01

F02 F10 F29 L03 L07 L08 L09 L20 L30 P01 P10 P19 P31

When this warning was detected before group construction/address check finish at power supply was turned on, the mode shifts automatically to AUTO address setup mode.

Regular communication error between indoor and remote controller Indoor/Outdoor serial error

Duplicated indoor addresses Communication error between indoor MCU

Regular communication error between indoor master and follower units Indoor unit, Heat exchanger (TCJ) error

Indoor unit, Heat exchanger (TC) error Indoor unit, Room temp. sensor (TA) error Indoor unit, other indoor P.C. board error Duplicated setting of indoor group master unit There is group cable in individual indoor unit. Unset indoor group address Unset indoor capacity Duplicated central control system address Outside error input to indoor unit (Interlock) Indoor unit, AC fan error Indoor unit, overflow detection 4-way valve system error Other indoor unit error

(Remote controller detected)

Check code indication

Wired remote contr oller

E01 E02 E09

No master remote controller, Remote controller communication (Receive) error Remote controller communication (Send) error Duplicated master remote controller

Representative defective position

Explanation of error contents

No communication from remote controller and network adapter (Also no communication from central control system)

There is error on serial communication between indoor and outdoor units Same address as yours was detected.

MCU communication error between main motor and micro computer Regular communication between indoor master and follower units is impossib le,

Communication between twin master (main) and follow er (sub) units is impossib l e . Open/short was detected on heat exchanger (TCJ). Open/short was detected on heat exchanger (TC). Open/short was detected on room temp. sensor (TA). EEPROM error (Other error may be detected. If no error, automatic address is repeated. There are multiple master units in a group.

When even one group connection indoor unit exists in individual indoor unit.

Indoor group address is unset.

Capacity of indoor unit is unset. Duplicated setting of central control system address Abnormal stop by outside error (CN80) input An error of indoor AC fan was detected. (Fan motor thermal relay worked.) Float switch worked. In heating operation, an error was detected by temp. down of indoor heat exchanger sensor. Follower unit in group cannot operate b y warning from [E03/L03/L07/L08] of master unit.

Explanation of error contents

Signal cannot be received from indoor unit. Master remote controller w as not set. (including 2 remote controllers)

Signal cannot be sent to indoor unit. In 2-remote controller control, both were set as master.

(Indoor master unit stops warning and follower unit continues operation.)

Air conditioner operation

Automatic Operation

reset

continuation

¡ × ¡ ×

×× ×× ×× ×× ××

××

×× ××

¡ × ¡ ×

Air conditioner operation

Automatic Operation

reset

continuation

—— ——

(Central control devices detected)

Check code indication

TCC-LINK central

C05 C06

C12 P30

NOTE: Even for the same contents of error such as communication error, the display of check code may differ according to detection device.

When remote controller or central controller detects an error, it is not necessarily related to operation of the air conditioner. In this list, the check codes that outdoor unit detects are not described.

Central control system communication (send) error Central control system communication (receive) error

General-purpose device control interface batched warning Group follower unit is def ective.

Representative defective position

Explanation of error contents

Signal sending operation of central control system is impossible. There are multiple same central devices. (AI-NET)

Signal receiving operation of central control system is impossible. An error on device connected to general-purpose device control interface of exclusive to TCC-LINK/AI-NET Group follower unit is defective. (For remote controller, above-mentioned [∗∗∗] details are displayed with unit No.)

Air conditioner operation

Automatic Operation

reset

continuation

—— ——

Page 71

Error mode detected by indoor unit

Operation of diagnostic function

Check

code

Cause of operation

Status of

air conditioner

Condition

Judgment and measures

No communication from remote controller (including wireless) and

E03

communication adapter

The serial signal is not output from outdoor unit to indoor unit.

• Miswiring of inter-unit wire

E04

• Defective serial sending circuit on outdoor P.C. board

• Defective serial receiving circuit on indoor P.C. board

E08

Duplicated indoor unit address

L03

Duplicated indoor master unit

There is group wire in individual indoor

L07

unit.

L08

Unset indoor group address

L09

Unset indoor capacity

L30

Abnormal input of outside interlock

Float switch operation

P10

• Float circuit, Disconnection, Coming-off, Float switch contact error

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

1. Check cables of remote controller and communication adapters.

• Remote controller LCD display OFF (Disconnection)

• Central remote controller [97] check code

1. Outdoor unit does not completely operate.

• Inter-unit wire check, correction of miswiring

• Check outdoor P.C. board. Correct wiring of P.C. board.

2. When outdoor unit normally operates Check P.C. board (Indoor receiving / Outdoor sending).

1. Check whether remote controller connection (Group/Individual) was changed or not after power supply turned on (Finish of group construction/Address check).

* If group construction and address are not normal when the

power has been turned on, the mode automatically shifts to address setup mode. (Resetting of address)

1. Set indoor capacity (DN=11)

1. Check outside devices.

2. Check indoor P.C. board.

1. Trouble of drain pump

2. Clogging of drain pump

3. Check float switch.

4. Check indoor P.C. board.

4-way valve system error

P19

• After heating operation has started, indoor heat exchangers temp. is down.

Own unit stops while warning is output

P31

to other indoor units.

Coming-off, disconnection or short of

F01

indoor heat exchanger temp. sensor (TCJ)

Coming-off, disconnection or short of

F02

indoor heat exchanger temp. sensor (TC)

Coming-off, disconnection or short of

F10

indoor heat exchanger temp. sensor (TA)

Indoor EEPROM error

F29

• EEPROM access error

Communication error between indoor MCU

E10

• Communication error between fan driving MCU and main MCU

Regular communication error between indoor aster and follower units and

E18

between main and sub units

Stop

(Automatic reset)

Stop

(Follower unit)

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

1. Check 4-way valve.

2. Check 2-way valve and check valve.

3. Check indoor heat exchanger (TC/TCJ).

4. Check indoor P.C. board.

1. Judge follower unit while master unit is [E03], [L03], [L07] or [L08].

2. Check indoor P.C. board.

1. Check indoor heat exchanger temp. sensor (TCJ).

2. Check indoor P.C. board.

1. Check indoor heat exchanger temp. sensor (TC).

2. Check indoor P.C. board.

1. Check indoor heat exchanger temp. sensor (TA).

2. Check indoor P.C. board.

1. Check indoor EEPROM. (including socket insertion)

2. Check indoor P.C. board.

1. Check indoor P.C. board.

1. Check remote controller wiring.

2. Check indoor power supply wiring.

3. Check indoor P.C. board.

– 71 –

Page 72

Error mode detected by remote controller or central controller (TCC-LINK)

Operation of diagnostic function

Check code

Not displayed at all (Operation on remote controller is impossible.)

Cause of operation

No communication with master indoor unit

• Remote controller wiring is not correct.

• Power of indoor unit is not turned on.

• Automatic address cannot be completed.

Status of

air conditioner

Stop

Condition

—

Power supply error of remote controller, Indoor EEPROM error

1. Check remote controller inter-unit wiring.

2. Check remote controller.

3. Check indoor power wiring.

4. Check indoor P.C. board.

5. Check indoor EEPROM. (including socket insertion)

→ Automatic address repeating phenom-

enon generates.

Judgment and measures

E01

∗2

E02

E09

L20

Central controller

L20

— ∗3

Central controller

(Send)

C05

(Receive)

C06

—

Central controller

P30

No communication with master indoor unit

• Disconnection of inter-unit wire between remote controller and master indoor unit (Detected by remote controller side)

Signal send error to indoor unit (Detected by remote controller side)

There are multiple main remote controllers. (Detected by remote controller side)

Duplicated indoor central addresses on communication of central control system (Detected by indoor/central controller side)

Communication circuit error of central control system (Detected by central controller side)

Indoor Gr sub unit error (Detected by central controller side)

Stop

(Automatic reset)

∗ If center exists,

operation continues.

Stop

(Automatic reset)

∗ If center exists,

operation continues.

Stop

(Sub unit

continues operation.)

Stop

(Automatic reset)

Continues

(By remote controller)

Continuation/Stop

(According

to each case)

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Receiving error from remote controller

1. Check remote controller inter-unit wiring.

2. Check remote controller.

3. Check indoor power wiring.

4. Check indoor P.C. board.

Sending error of remote controller

1. Check sending circuit inside of remote controller.

→ Replace remote controller.

1. In 2-remote controllers (including wireless), there are multiple main units.

Check that there are 1 main remote controller and other sub remote controllers.

1. Check setting of central control system network address. (Network adapter SW01)

2. Check network adapter P.C. board.

1. Check communication wire / miswiring

2. Check communication (U3, U4 terminals)

3. Check network adapter P.C. board.

4. Check central controller (such as central control remote controller, etc.)

5. Check terminal resistance. (TCC-LINK)

Check the check code of the corresponding unit from remote controller.

∗2 The check code cannot be displayed by the wired remote controller.

(Usual operation of air conditioner becomes unavailable.) For the wireless models, an error is notified with indication lamp.

∗3 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4), and

[E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according to the contents.

– 72 –

Page 73

9-2-2. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code

[E01 error]

Is inter-unit cable of A and B normal?

YES

Is there no disconnection or

contact error of connector on harness

from terminal block of indoor unit?

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is power supplied to remote controller?

AB terminal: Approx. DC18V

YES

Correct inter-unit cable

of remote controller

Correct connection of connector.

Check circuit wiring.

Check power connection of indoor unit.

(Turn on power again.)

Check indoor P.C. board (MCC-1403).

Defect → Replace

[E09 error]

Are 2 remote controllers set

without master unit?

Are 2 master units set in

2 remote controllers?

YES

Correct a master unit/a follower unit.

(Remote controller address connector)

Check remote controller P.C. board.

Defect → Replace

Correct as a master unit

and a follower unit.

Check remote controller P.C. board.

Defect → Replace

– 73 –

Page 74

[E04 error]

Does outdoor operate?

YES

Check indoor P.C. board.

Defect → Replace

Is group address setup of

remote controller correct?

YES

Are wiring in indoor unit and

1, 2, 3 inter-unit cables correct?

YES

Are wirings of terminal blocks

(1, 2, 3) wired to CN04 normal?

YES

Does D502 (Orange LED) flash

after power supply turned on again?

YES

Check outdoor P.C. board.

Defect → Replace

Check Item code [14].

Correct wiring and

inter-unit cables.

Correct wiring of connector

and terminal blocks.

Check indoor P.C. board.

Defect → Replace

[E10 error]

Is there no disorder of power supply?

Check indoor control P.C. board

(MCC-1403).

Defect → Replace

YES

Check power supply voltage.

Correct lines.

Check and eliminate noise, etc.

– 74 –

Page 75

[E18 error]

Is inter-unit cable

of A and B normal?

YES

Is there no disconnection

or contact error of connector

on harness from terminal block

of indoor unit?

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is T win or Triple control?

YES

Correct inter-unit cable

of remote controller.

Correct connection of connector.

Check circuit wiring.

Check power

connection status of indoor unit

(Connect again).

Is there no contact error

of indoor/outdoor inter-unit cable

(Signal line) of the main unit?

YES

Correct indoor/outdoor inter-unit cable

(Serial signal line).

Check indoor P.C. board

(MCC-1403).

Defect → Replace

[E08, L03, L07, L08 error]

E08: Duplicated indoor unit No. L03: There are 2 or more master units in a group control. L07: There is 1 or more group address [Individual] in a group control. L08: The indoor group address is unset. (13. ADDRESS SETUP)

If the above error is detected when power supply turned on, the mode enters automatically in the automatic address set mode. (Check code is not output.)

However, if the above error is detected during the automatic address set mode, a check code may be output.

[L09 error]

Is not yet capacity setting

of indoor unit set up?

YES

Set capacity data of indoor unit.

(Setup item code (DN)=11)

Check indoor P.C. board (MCC-1403).

Defect → Replace

– 75 –

Page 76

[L20 error]

Are wiring connections to communication lines

U3 and U4 normal?

YES

Is not the multiple same central

control system addresses connected?

Check central controller

(including network adapter) and

indoor P.C. board (MCC-1403).

Defect → Replace

[L30 error]

Are outside devices of

connector CN80 connected?

YES

Correct wiring connection.

Correct central control system address.

Check indoor P.C. board (MCC-1403).

Defect → Replace

YES

Do outside devices normally work?

YES

Check cause of operation.

[P30 error] (Central controller)

Is group operation carried out?

YES

Is there check code

on sub remote controller in main

and sub remote controllers?

Check outside devices.

Defect → Replace

YES

Check corresponding

indoor unit/outdoor unit.

Check indoor P.C. board (MCC-1403).

Defect → Replace

– 76 –

Page 77

[P10 error]

Is connection of

float switch connector

(Indoor control board CN34)

normal?

YES

Does float switch work?

YES

Does drain pump work?

YES

drain pump turned on? ∗

Is power of

YES

Is circuit wiring normal?

Check and correct wiring

and wire circuit.

NO NO

Are connector pins 1 and 2

at drain pump unit side shorted

(Resistance value 0)?

Correct connection

of connector.

YES

Check the drain pipe, etc.

Replace drain pump.

Check wiring.

∗ Check that voltage of 1-2 pin of CN504 on the indoor P.C. board is +12V. (1 pin is plus (+).)

Replace drain pump

and indoor P.C. board

(MCC-1403).

[F10 error]

Is connection of TA sensor connector

(CN104 on indoor P.C. board) correct?

YES

Are characteristics of

TA sensor resistance value normal?

Correct connection of connector.

Check indoor P.C. board

(MCC-1403).

Defect → Replace

Replace TA sensor.

YES

Check indoor P.C. board (MCC-1403).

Defect → Replace

∗ Refer to TA sensor (Temperature-Resistance value characteristic table)

– 77 –

Page 78

[P19 error]

Is operation of 4-way valve normal?

(Check pipe temp., etc. in cooling/heating operation.)

YES

Temperature sensor check

TE sensor CN601 TS sensor CN600

Indoor TC sensor

Defect → Correct and repair

Is the coil resistance value of

4-way valve between 1.3 and 1.6kΩ?

YES

Check operation of outdoor P.C. board.

(See below.)

Check 4-way valve.

Defect → Replace

Error

Replace coil of 4-way valve.

Check outdoor P.C. board.

Defect → replace

Check method of outdoor P.C. board operation (Self-hold valve type : SP110, SP140)

1) Set SW804 of Dip switch as the following figure and then push SW801 for approx. 1 second to check exchange operation to cooling cycle/heating cycle.

• Power is turned on for approx. 10 seconds.

• When checking again, check operation 1 minute or more after the first check because exothermic of part

(Coil, resistance R700) is large. (There is no problem when coil is not connected.)

2) After check, turn off all the Dip switch SW804.

SW804 SW801 CN701

Note) Check by tester

Analog tester : Good if over DC200V Digital tester : Good if Max. value is over DC200V though the varied value may be displayed.

Exchange to cooling cycle Exchange to heating cycle

SW804 SW801 CN701

1234

Push

DC200V or more

1234

Push

DC200V or more

– 78 –

Page 79

[F02 error]

Is connection of TC sensor connector

(CN101 on Indoor P.C. board) correct?

TC sensor resistance value normal?

Check indoor P.C. board (MCC-1403).

[F01 error]

Is connection of TCJ sensor connector (CN102 on Indoor P.C. board) correct?

YES

Are characteristics of

YES

∗ Refer to TC sensor (Temperature-Resistance value characteristic table)

Defect → Replace

Correct connection of connector.

Replace TC sensor.

Correct connection of connector.

YES

Are characteristics of

TCJ sensor resistance value normal?

YES

∗ Refer to TCJ sensor (Temperature-Resistance value characteristic table)

Check indoor main P.C. board (MCC-1403).

Defect → Replace

Replace TCJ sensor.

– 79 –

Page 80

[C06 error] (TCC-LINK central controller)

Are U3 and U4 communication lines normal?

YES

∗1

Is connection of connector normal?

YES

Are A and B communication lines normal?

YES

Is there no connection error of power supply cable?

Is not the source power supply turned on?

∗1

TCC-LINK central: CN51 of TCC-LINK adapter P.C. board (MCC-1440) and CN050 of indoor P.C. board

YES

Correct communication line.

Correct connection of connector.

Check connection of A and B terminal blocks.

Correct communication line of remote controller.

Correct power wiring.

Turn on the source power supply.

YES

Did a power failure occur?

Is the network address changed

from the remote controller?

Is there no noise source?

Can the other indoor units

be normally controlled from the central controller?

Or is the operation status of indoor unit reflected?

YES

Can the indoor unit be normally controlled

from the remote controller?

YES

Uncontrolled

(Same to others)

Uncontrolled

Clear the check code.

Eliminate noise, etc.

Check central controller.

Defect → Replace

Check indoor P.C. board (MCC-1403).

Defect → Replace

YES

Check power supply transformer on

TCC-LINK adapter P.C. board (MCC-1440).

Defect → Replace

– 80 –

Page 81

[E03 error] (Master indoor unit)

[E03 error] is detected when the indoor unit cannot receive a signal from the remote controller (also central controller).

Check A and B remote controllers and communication lines of the central control system U3 and U4. As communication is impossible, this chec k code [E03] is not displayed on the remote controller and the central

controller. [E01] is displayed on the remote controller and [C06 error] is displayed on the central controller . If these check codes generate during operation, the air conditioner stops.

[F29 error]

This check code indicates a detection error of IC10 non-volatile memory (EEPROM) on the indoor unit P.C. board, which generated during operation of the air conditioner. Replace the service P.C. board.

∗ When EEPROM was not inserted when power supply turned on or when the EEPROM data read/write

operation is impossible at all, the automatic address mode is repeated. In this time, [97 error] is displayed on the central controller.

(Power ON)

(Approx.

3 minutes)

[SET] is displayed

on remote controller.

(Approx.

1 minute)

[SET]

goes off.

(Repetition)

LED (D02) on indoor unit

P.C. board flashes with

1Hz for approx. 10 seconds.

Reboot (Reset)

[P31 error] (Follower indoor unit)

When the master unit of a group operation detected [E03], [L03], [L07] or [L08] error, the follower unit of the group operation detects [P31 error] and then the unit stops.

There is no display of the check code or alarm history of the remote controller. (In this model, the mode enters in automatic address set mode when the master unit detected [L03], [L07] or [L08] error.)

– 81 –

Page 82

Temperature sensor Temperature – Resistance value characteristic table

T A, TC, TCJ, TE, TS, T O sensors

Representative value

Temperature

(°C)

0 10 20 25 30 40 50 60 70 80 90 100

(Minimum value) (Standard value) (Maximum value)

32.33 33.80 35.30

19.63 20.35 21.09

12.23 12.59 12.95

9.75 10.00 10.25

7.764 7.990 8.218

5.013 5.192 5.375

3.312 3.451 3.594

2.236 2.343 2.454

1.540 1.623 1.709

1.082 1.146 1.213

0.7740 0.8237 0.8761

0.5634 0.6023 0.6434

Resistance value (k

T A, TC, TCJ, TE, TS, T O sensors

ΩΩ

Ω)

ΩΩ

TD, TL sensors

Representative value

Temperature

(°C)

0 10 20 25 30 40 50 60 70 80 90 100

(Minimum value) (Standard value) (Maximum value)

150.5 161.3 172.7

92.76 99.05 105.6

58.61 62.36 66.26

47.01 49.93 52.97

37.93 40.22 42.59

25.12 26.55 28.03

17.00 17.92 18.86

11.74 12.34 12.95

8.269 8.668 9.074

5.925 6.195 6.470

4.321 4.507 4.696

3.205 3.336 3.468

Resistance value (k

ΩΩ

Ω)

ΩΩ

Resistance (kΩ)

10 20 30 40 50 60 70 80 90 100

Temperature (˚C)

TD, TL sensors

200

150

100

Resistance (kΩ) (50˚C or lower)

10 20 30 40 50 60 70 80 90 100

Resistance (kΩ) (50˚C or higher)

Temperature (˚C)

∗ As TH sensor (Outdoor unit heat sink temp. sensor) is incorporated in the outdoor control P.C. board, the

resistance value cannot be measured.

– 82 –

Page 83

10. OUTDOOR UNIT TROUBLESHOOTING

10-1. Summary of Troubleshooting

1. Before troubleshooting

1) Required tools/instruments

• + and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check

a) The following operations are normal.

1. Compressor does not operate.

• Is not 3-minutes delay (3 minutes after compressor OFF)?

• Is not the outdoor unit in standby status though the remote controller reached the setup temperature?

• Does not timer operate during fan operation?

• Is not an overflow error detected on the indoor unit?

• Is not outside high-temperature operation controlled in heating operation?

2. Indoor fan does not rotate.

• Does not cool air discharge preventive control work in heating operation?

3. Outdoor fan does not rotate or air volume changes.

• Does not high-temperature release operation control work in heating operation?

• Does not outside low-temperature operation control work in cooling operation?

• Is not defrost operation performed?

4. ON/OFF operation cannot be performed from remote controller.

• Is not the control operation performed from outside/remote side?

• Is not being carr ied out a test run by operation of the outdoor controller?

b) Did you return the cabling to the initial positions? c) Are connecting cables of indoor unit and remote controller correct?

2. Troubleshooting procedure

When a trouble occurred, check the parts along with the following procedure.

Trouble Confirmation of check code display Check defective position and parts.

NOTE :

→→

– 83 –

Page 84

1. Before troubleshooting

1) Required tools/instruments

•+ and – screwdrivers, spanners, radio cutting pliers, nippers, etc.

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check a) The following operations are normal.

1. Compressor does not operate.

• Is not 3-minutes delay (3 minutes after compressor OFF)?

• Is not the outdoor unit in standby status though the remote controller reached the setup temperature?

• Does not timer operate during fan operation?

• Is not an overflow error detected on the indoor unit?

• Is not outside high-temperature operation controlled in heating operation?

2. Indoor fan does not rotate.

• Does not cool air discharge preventive control work in heating operation?

3) Outdoor fan does not rotate or air volume changes.

• Does not high-temperature release operation control work in heating operation?

• Does not outside low-temperature operation control work in cooling operation?

• Is not defrost operation performed?

4) ON/OFF operation cannot be performed from remote controller.

• Is not forced operation performed?

• Is not the control operation performed from outside/remote side?

a) Did you return the cabling to the initial positions? b) Are connecting cables between indoor unit and receiving unit correct?

2. Troubleshooting procedure

(When the power is turned on at the first time or when indoor unit address setting is changed, the operation cannot be performed for maximum approx. 5 minutes after power-ON.)

When a trouble occurred, check the parts along with the following procedure.

Trouble Confirmation of lamp display

→ →

Check defective position

and parts.

– 84 –

Page 85

10-2. Troubleshooting

10-2-1. Outline of Judgment

The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with the following method.

Method to judge the erroneous position by flashing indication on the display part of the indoor unit (sensors of the receiving part)

The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis are displayed restricted to the following cases if a protective circuit works.

: Go off, : Go on, : Flash (0.5 sec.)

Lamp indication

Operation

No indication at all

Operation

Flash

Operation

Timer Ready

Flash

Timer Ready

Alternate flash

Check code

—

E01 E02 E03 E08 E09 E10

E18

E04

P01 P10 P12

Cause of trouble occurrence

Po wer supply OFF or miswiring between receiving unit and indoor unit

Receiving error Sending error

Communication stop

Duplicated indoor unit No. Duplicated master units of remote controller

Communication error between CPUs on indoor unit P.C. board Wire connection error between indoor units, Indoor power OFF

(Communication stop between indoor master and follow er or betw een main and sub indoor twin)

Miswiring between indoor unit and outdoor unit or connection erorr (Communication stop between indoor and outdoor units)

Indoor AC fan error Overflow was detected. Protective device of indoor unit worked. Indoor DC fan error

 

Receiving unit



    

 

Miswiring or wire connection error



between receiving unit and indoor unit

 



Setup error

 

Operation

Timer Ready

Alternate flash

P03 P04 P19

P31

Outdoor unit discharge temp. error Outdoor high pressure system error

4-way valve system error (Indoor or outdoor unit judged.) Stopped because of error of other indoor unit in a group

(Check codes of E03/L03/L07/L08)



Protective device of



outdoor unit worked.



∗1

∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.

– 85 –

Page 86

Lamp indication

Operation

Alternate flash

Operation

Alternate flash

Operation

Timer Ready

Check code

F01 F02 F10 F04 F06 F08

Cause of trouble occurrence

Heat exchanger sensor (TCJ) error Heat exchanger sensor (TC) error Indoor unit sensor error Heat exchanger sensor (TA) error

Discharge temp. sensor (TD) error Temp. sensor (TE, TS) error Sensor error of outdoor unit ∗1 Temp. sensor (TO) error

    

Simultaneous flash

Operation

Timer Ready

Flash

Operation

Timer Ready

Simultaneous flash

Operation

Timer Ready

Simultaneous flash

F29

H01 H02 H03 H06

L03

L07

L08

L09 L20

L29 L30 L31

Indoor EEPROM error

Compressor break down Compressor lock Outdoor compressor system error ∗1 Current detection circuit error

    

Outdoor unit low pressure system error

Duplicated master indoor units There is indoor unit of group connection → AUTO address

in individual indoor unit. Unsetting of group address

   

* If group construction and



address are not normal Missed setting when power supply turned on, (Unset indoor capacity) automatically goes to address

setup mode.

Duplicated indoor central addresses Outdoor unit and other error Outside interlock error Negative phase error

      

Others

∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.

– 86 –

Page 87

10-2-2. Others (Other than Check Code)

Lamp indication

Operation

Simultaneous flash

Operation

Timer Ready

Alternate flash

Check code

—

Cause of trouble occurrence

During test run

Disagreement of cool/heat (Automatic cool/heat setting to automatic cool/heat prohibited model, or setting of heating to cooling-only model)

New Check Code

1. Difference between the new check code and the existing check code

New check code

Display

Used characters Characteristics of

code classification

Block display

Existing check code

Hexadecimal, 2 digits Few classifications for communication

and defective setting Indoor P.C. board, outdoor P.C. board,

cycle, communication

Alphabet + decimal, 2 digits

 

Many classifications for communication and defective setting

 

Communication/defective setting (4 types), indoor protection,



outdoor protection, sensor, compressor protection, etc.

    

→

Classification

TEST

• [

] goes on.

• [UNIT No.] + Check code + Operation lamp (Green) flash.

• Combination block of [Operation ], [Timer ] and [Ready ] is displayed.

A C E F H

J L

NEW SPE is not used. Central control system error Communication system error Each sensor error (Defective) Compressor protection system error NEW SPE is not used. Setting error / Other error Protective device operated

– 87 –

Page 88

– 88 –

10-2-3. Check Code List (Outdoor)

Remote controller indication

F04 F06

F08 H01 H02

H03 H06

L29

P03 P04 P22

P26 P29

E01

E02

E03 E04

E08 E09 E10 E18

L03

L07

L08

L09

L30

L31 P19

Sensor lamp part

Block indication

Operation

Timer Ready Flash

¥¥¡

l l

¥¡¥

¥ ¥ ¥

¥ ¥ ¥ ¥

l ll

ll ll ll ll

¥¡¥ ¥¡¥

ALT

Outdoor unit Discharge temp. sensor (TD) error

ALT

Outdoor unit Temp. sensor (TE, TS, TL) error

ALT

Outdoor unit Outside temp. sensor (TO) error Outdoor unit Compressor break down Outdoor unit Compressor lock

Outdoor unit Current detection circuit error Outdoor unit Low pressure system error

SIM

Outdoor unit Other outdoor unit error

ALT

Outdoor unit Discharge temp. error Outdoor unit

ALT

High pressure system error, Power supply voltage error

ALT

Outdoor unit Outdoor fan error

ALT

Outdoor unit Inverter Idc operation

ALT

Outdoor unit Position detection error No remote controller master unit

Remote controller communication error Remote controller send error Regular communication error between indoor and

remote controller Indoor/Outdoor serial error Duplicated indoor addresses

Duplicated main remote controllers Communication error between CPU

Regular communication error between master and follower indoor units

SIM

Duplicated indoor master units

SIM

There is group cable in individual indoor unit.

SIM

Unset indoor group address

SIM

Unset indoor capacity

SIM

Outside error input to indoor unit (Interlock)

SIM

Phase order error and others

ALT

4-way valv e inverse error

ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED

Representative defective position

² ² ²

Detection

Outdoor Outdoor Outdoor

Outdoor

Outdoor Outdoor Outdoor

Outdoor

Outdoor Outdoor Outdoor

Outdoor Outdoor

Remote

controller

Remote

controller

Indoor Indoor

Indoor

Remote

controller

Indoor Indoor Indoor

Indoor Indoor Indoor Indoor

Outdoor

Indoor

Outdoor

: Go on, ¥ : Flash, l : Go off

Explanation of error contents

Open/Short of discharge temp. sensor was detected. Open/Short of heat exchanger temp. sensor was detected.

Miswiring between TE sensor and TS sensor Open/Short of outside temp. sensor was detected. When reached min-Hz by current release control, short-circuited current (Idc) after

DC excitation was detected. Compressor lock was detected. Current detection circuit error Ps pressure sensor error, low pressure protective oper ation.

1) Defective parts on outdoor P.C. board (MCU communication, EEPROM, TH sensor error)

2) When outdoor service P.C. board w as used, model type selection was inappropriate.

3) Other error (Heat sink abnormal overheat, gas leak, 4-way valve inverse error) was detected. Error was detected by discharge temp. release control. When case thermostat worked, error was detected by high release control from indoor/

outdoor heat exchanger temp. sensor. Power supply voltage error Error (Over-current, lock, etc.) was detected on outdoor fan drive circuit. Short-circuited protective operation of compressor drive circuit element (G-Tr /IGBT) worked. Position detection error of compressor motor was detected. Signal was not received from indoor unit.

Main remote controller was not set. (including 2 remote controllers) Signal cannot be sent to indoor unit.

No communication from remote controller and network adapter Serial communication error between indoor and outdoor

Same address as yours was detected. In 2-remote controller control, both were set as master.

(Indoor master unit stops warning and follower unit continues operation.) MCU communication error between main motor and micro computer Regular communication was impossible between master and follower indoor units.

Communication between twin master (Main unit) and follow er (sub unit) was impossible. There are multiple master units in a group. When even one group connection indoor unit exists in individual indoor unit Indoor address group was unset. Capacity of indoor unit was unset. Abnormal stop by CN80 outside error input Phase order

In heating operation, error was detected by temp. down of indoor heat exchanger or temp. up ofTE, TS.

of 3-phases power supply is abnormal (Thermo-OFF operation continues.) and others.

Automatic Operation

reset

continuation

×× ××

¡¡

×× ××

——

¡ × ¡ ×

××

¡ ×

×× ×× ×× ×× ×× ×

¡ ×

When this warning was detected before group construction/address check finish at power supply was turned on, the mode shifts automatically to AUTO address setup mode.

Page 89

: Go on, ¥ : Flash, l : Go off

Automatic Operation

reset

continuation

¡ × ¡ × ¡ ×

×× ×× ×× ××

¡ ×

——

¡¡

¡ ×

¡¡

Remote controller indication

F01 F02 F10

F29 P01 P10 P12 P31

—

L20

—

Sensor lamp part

Block indication

Operation

Timer Ready Flash

¥¥ ¥¥ ¥¥ ¥¥

l l l

By unit with warning No. ALT

l l l l

¥¥ ¥¥ ¥¥

—

¥¡¥

—

Representative defective position

ALT

Indoor unit Heat exchanger sensor (TCJ) error

ALT

Indoor unit Heat exchanger sensor (TC) error

ALT

Indoor unit Room temp. sensor (TA) error

SIM

Indoor unit Other indoor P.C. board error

ALT

Indoor unit Indoor fan error

ALT

Indoor unit Overflow detection

ALT

Indoor unit Indoor fan error

ALT

Other indoor unit error Error in indoor group

LAN system communication error

SIM

LAN system communication error There are multiple communication adapters.

ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED

Detection

Indoor Indoor Indoor Indoor Indoor Indoor Indoor Indoor

Network adapter

Network adapter/

Center

Network adapter/

Center

Network adapter

Open/Short of heat exchanger (TCJ) was detected. Open/Short of heat exchanger (TC) was detected. Open/Short of room temp. (TA) was detected. EEPROM error (Other error may be detected. If no error, automatic address is repeated. Indoor AC fan error was detected. (Fan thermal relay worked.) Float switch worked. Indoor fan error (Over-current / Lock, etc.) w as detected. Other indoor under condition of warning in group. E03/L07/L03/L08 w arning Sub remote controller error in a group

(Details of remote controller are displayed with unit No. Only central control side is displayed.) Communication error of central control system signal

∗ Is not displayed on the remote controller Duplicated indoor address of central control system communication There are multiple communication adapters on remote controller communication line.

Explanation of error contents

– 89 –

Page 90

Error mode detected by indoor unit

Operation of diagnostic function

Check

code

E03

E04

E08 L03

L07

L08

L09

L30

P01

P10

P12

P19

P31

F01

F02

F10

F29

E10

E18

Cause of operation

No communication from remote controller (including wireless) and communication adapter

The serial signal is not output from outdoor unit to indoor unit.

• Miswiring of inter-unit wire

• Defective serial sending circuit on outdoor P.C. board

• Defective serial receiving circuit on indoor P.C. board

Duplicated indoor unit address Duplicated indoor master unit There is group wire in individual indoor

unit. Unset indoor group address

Unset indoor capacity

Abnormal input of outside interlock

Fan motor thermal protection

Float switch operation

• Float circuit, Disconnection, Coming-off, Float switch contact error

Indoor DC fan error

4-way valve system error

• After heating operation has started, indoor heat exchangers temp. is down.

Own unit stops while warning is output to other indoor units.

Coming-off, disconnection or short of indoor heat exchanger temp. sensor (TCJ)

Coming-off, disconnection or short of indoor heat exchanger temp. sensor (TC)

Coming-off, disconnection or short of indoor heat exchanger temp. sensor (TA)

Indoor EEPROM error

• EEPROM access error

Communication error between indoor MCU

• Communication error between fan driving MCU and main MCU

Regular communication error between indoor aster and follower units and between main and sub units

Status of

air conditioner

(Automatic reset)

(Follower unit)

(Automatic reset)

Stop

Condition

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Judgment and measures

1. Check cables of remote controller and communication adapters.

• Remote controller LCD display OFF (Disconnection)

• Central remote controller [97] check code

1. Outdoor unit does not completely operate.

• Inter-unit wire check, correction of miswiring

• Check outdoor P.C. board. Correct wiring of P.C. board.

2. When outdoor unit normally operates Check P.C. board (Indoor receiving / Outdoor sending).

1. Check whether remote controller connection (Group/Individual) was changed or not after power supply turned on (Finish of group construction/Address check).

* If group construction and address are not normal when the

power has been turned on, the mode automatically shifts to address setup mode. (Resetting of address)

1. Set indoor capacity (DN=11)

1. Check outside devices.

2. Check indoor P.C. board.

1. Check fan motor thermal relay.

2. Check indoor P.C. board.

1. Trouble of drain pump

2. Clogging of drain pump

3. Check float switch.

4. Check indoor P.C. board.

1. Position detection error

2. Over-current protective circuit of indoor fan driving unit operated.

3. Indoor fan locked.

4. Check indoor P.C. board.

1. Check 4-way valve.

2. Check 2-way valve and check valve.

3. Check indoor heat exchanger (TC/TCJ).

4. Check indoor P.C. board.

1. Judge follower unit while master unit is [E03], [L03], [L07] or [L08].

2. Check indoor P.C. board.

1. Check indoor heat exchanger temp. sensor (TCJ).

2. Check indoor P.C. board.

1. Check indoor heat exchanger temp. sensor (TC).

2. Check indoor P.C. board.

1. Check indoor heat exchanger temp. sensor (TA).

2. Check indoor P.C. board.

1. Check indoor EEPROM. (including socket insertion)

2. Check indoor P.C. board.

1. Check indoor P.C. board.

1. Check remote controller wiring.

2. Check indoor power supply wiring.

3. Check indoor P.C. board.

– 90 –

Page 91

Error mode detected by remote controller or central controller (TCC-LINK)

Operation of diagnostic function

Check code

Not displayed at all (Operation on remote controller is impossible.)

E01

∗2

E02

E09

L20

Central controller

— ∗3

Central controller

— ∗3

Central controller

—

Central controller

Cause of operation

No communication with master indoor unit

• Remote controller wiring is not correct.

• Power of indoor unit is not turned on.

• Automatic address cannot be completed.

No communication with master indoor unit

• Disconnection of inter-unit wire between remote controller and master indoor unit (Detected by remote controller side)

Signal send error to indoor unit (Detected by remote controller side)

There are multiple main remote controllers. (Detected by remote controller side)

Duplicated indoor central addresses on communication of central control system (Detected by indoor/central controller side)

There are multiple network adapters on the remote controller communication line. (Central controller side detected.)

Communication circuit error of central control system

(Detected by central controller side)

Indoor Gr sub unit error (Detected by central controller side)

Status of

air conditioner

Stop

(Automatic reset)

∗ If center exists,

operation continues.

Stop

(Automatic reset)

∗ If center exists,

operation continues.

Stop

(Sub unit

continues operation.)

Stop

(Automatic reset)

Continues

(By remote controller)

Continuation/Stop

(According

to each case)

Condition

—

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Power supply error of remote controller, Indoor EEPROM error

1. Check remote controller inter-unit wiring.

2. Check remote controller.

3. Check indoor power wiring.

4. Check indoor P.C. board.

5. Check indoor EEPROM. (including socket insertion)

→ Automatic address repeating phenom-

enon generates.

Receiving error from remote controller

1. Check remote controller inter-unit wiring.

2. Check remote controller.

3. Check indoor power wiring.

4. Check indoor P.C. board.

Sending error of remote controller

1. Check sending circuit inside of remote controller.

→ Replace remote controller.

1. In 2-remote controllers (including wireless), there are multiple main units.

Check that there are 1 main remote controller and other sub remote controllers.

1. Check setting of central control system network address. (Network adapter SW01)

2. Check network adapter P.C. board.

1. Check the multiple network adapters.

2. Check inter-unit wire of remote controller / miswiring.

→ There should be only 1 adapter on the

network.

1. Check communication wire / miswiring

2. Check communication (U3, U4 terminals)

3. Check network adapter P.C. board.

4. Check central controller (such as central control remote controller, etc.)

5. Check terminal resistance. (TCC-LINK)

Check the check code of the corresponding unit from remote controller.

Judgment and measures

∗2 The check code cannot be displayed by the wired remote controller.

(Usual operation of air conditioner becomes unavailable.) For the wireless models, an error is notified with indication lamp.

∗3 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4), and

[E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according to the contents.

– 91 –

Page 92

Error mode detected by outdoor unit

Operation of diagnostic function

Check code

Indoor unit

F04

F06

F08

H01

H02

H03

H06

L29

L31 ∗1

P03

P04

P22

P26

P29

Disconnection, short of discharge temp. sensor (TD)

Disconnection, short of outdoor temp. sensor (TE, TS)

Disconnection, short of outside temp. sensor (TO)

Compressor break down ∗ Although operation has started, operation

frequency decreases and operation stops.

Compressor lock ∗ Over-current detection after compressor start-up

Current detection circuit error

Low pressure switch operated. (Model with low-pressure switch)

Cooling: 30 seconds Heating: 10 minutes

Overload for (compressing) of compressor, outdoor unit error and other error

• Communication error between CDB and IPDU (Coming-out of connector)

• Temperature error of heat sink (Temperature over specified value w as detected.)

Phase detection protective circuit operated.

Discharge temperature error

• Discharge temperature higher than specified value was detected.

High-pressure protection error of TE sensor (Temperature higher than specified value was detected.)

High pressure switch (Model with high pressure switch)

Outdoor fan system error

Short-circuit error of compressor driving element

Position detection circuit error

Cause of operation

Status of

air conditioner

Stop

Continue

Stop

Continues

(Compressor stops.)

Stop

Condition

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Judgment anAd measures

1. Check discharge temp. sensor (TD).

2. Check outdoor P.C. board.

1. Check temp. sensor (TE, TS).

2. Check outdoor P.C. board (CDB, IPDU).

1. Check outside temp. sensor (TO).

2. Check outdoor P.C. board (CDB, IPDU).

1. Check power supply voltage. (AC198 to 264V)

2. Overload operation of refrigerating cycle

1. Trouble of compressor (Lock, etc.): Replace compressor.

2. Wiring error of compressor (Open phase)

1. Check outdoor P.C. board. (AC current detection circuit)

1. Check the refrigerating cycle. (Gas leak)

2. Check low-pressure switch system circuit.

3. Check P.C. board of the outdoor CDB.

1. Check wiring of CDB and IPDU.

2. Abnormal overload operation of refrigerating cycle.

3. Check power supply voltage.

1. Check phase missing.

2. Check outdoor P.C. board.

3. Check high pressure switch.

4. Check circuit wiring of high pressure switch.

1. Check refrigerating cycle. (Gas leak)

2. Trouble of electron expansion valve

3. Check piping sensor (Td).

1. Overload operation of refrigerating cycle

2. Check outdoor temperature sensor (TE).

3. Check outdoor control P.C. board. (CDB and main P.C. board)

4. Check high pressure switch and circuit.

1. Check lock of fan motor.

2. Check power supply voltage. AC198 to 264V

3. Check outdoor P.C. board.

1. When performing operation while taking-off compressor wire, P26 error occurs. Check control P.C. board.

2. When performing operation while taking-off compressor wire, an error does not occur. (Compressor rare short)

1. Check control P.C. board.

– 92 –

Page 93

10-2-4. Distinction of error mode by LED indication of outdoor unit

On the Type AP112, AP140 and AP160, a Dip switch (SW801) and LED are provided on the P.C. board of the outdoor unit.

Exchanging this Dip switch enables users to know the status of the outdoor unit in that time. Lighting status of LED enables users to know the distinction stage before trouble of the outdoor unit will be

determined and displayed on the remote controller. Depending on the indoor unit to be combined, the error of the outdoor temperature sensor (TO) may be

confirmed on LED indication only.

Model

SM160

(MCC-1531)

Dip switch

SW801

Bit 1 Bit 2

OFF OFF

ON OFF

OFF ON

LED

D800 D801 D802 D803

(Red) (Yellow) (Yellow) (Yellow)

For error display,

refer to on the next page.

During timer short

²lll

During pump down operation

l²²²

Protective operation count Normal time, Count 1

——

When this LED lights, When this LED lights, When this LED lights, When this LED lights,

add +16 pulses. add +8 pulses. add +4 pulses. add +2 pulses.

Count2, Count 3 Count 4, Count 5 Count 6, Count 7 Protective operation

PMV opening data (Lower 4 bits data)

¡¡

²²

Under backup control

When this LED lights, When this LED lights, When this LED lights, When this LED lights,

ON ON

: Go on, l : Go off, ² : 1Hz flash, ¥ : 5Hz flash

add +256 pulses. add +128 pulses. add +64 pulses. add +32 pulses.

Total pulses of LED which lights at the respective positions become PMV opening. For example, in case of

PMV opening becomes 256 + 32 + 4 + 2 = 294 pulses.

PMV opening data (Upper 4 bits data)

¡ll¡

(Upper 4 bits, Lower 4 bits),

¡¡

– 93 –

Page 94

You can perform fault diagnosis of the outdoor unit with the LEDs on the P.C. board of the outdoor unit in addition to check codes displayed on the wired remote controller of the indoor unit.

Use the LEDs and check codes for various checks. Details of check codes displayed on the wired remote controller of the indoor unit are described in the Installation Manual of the indoor unit.

LED indication and code checking

Cycle control P.C. board

LED indication

D800 ¡ : Red

¡ ¡ ¡

: Yellow : Yellow : Yellow

D801 D802 D803

LED indication

D800 D801 D802 D803

¡¡

l l

¡¡¡

lll

¡ ¡

l ll

¡¡¡¡ ¡

¥¥¥

¡¡

lll

l l

Cause

Heat exchanger sensor (TE) error Suction sensor (TS) error Discharge sensor (TD) error Thermostat for compressor activated. Outdoor temperature sensor (TO) error DC outdoor fan error (Upper side) DC outdoor fan error (Lower side) Communication error between IPDU (Abnormal stop) Comp. case thermo. operate – Serial signal error Discharge temp. error EEPROM error Communication error between IPDU (No abnormal stop) G – Tr short – circuit protection

: Rapid flash

: Go off

: Go on

¥¥

ll ll

¥ ¥

¥¥¥

Detect circuit error Current sensor error Comp. lock error

Comp. break down

High-pressure release operation

TH sensor error

– 94 –

Page 95

10-2-5. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code

[E01 error]

Is inter-unit cable of A and B normal?

YES

Is there no disconnection or

contact error of connector on harness

from terminal block of indoor unit?

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is power supplied to remote controller?

AB terminal: Approx. DC18V

YES

Correct inter-unit cable

of remote controller

Correct connection of connector.

Check circuit wiring.

Check power connection of indoor unit.

(Turn on power again.)

Check indoor P.C. board (MCC-1570).

Defect → Replace

[E09 error]

Are 2 remote controllers set

without master unit?

Are 2 master units set in

2 remote controllers?

YES

Correct a master unit/a sub unit.

(Remote controller address connector)

Check remote controller P.C. board.

Defect → Replace

Correct as a master unit

and a sub unit.

Check remote controller P.C. board.

Defect → Replace

– 95 –

Page 96

[E04 error]

Does outdoor unit operate?

YES

Is setup of group address correct?

YES

Are 1, 2, 3 inter-unit cables normal?

YES

Are connections from connectors

of inter-terminal blocks (1, 2, 3)

of indoor/outdoor units normal?

YES

Does voltage between

2 and 3 of inter-terminal blocks (1, 2, 3)

of indoor unit vary?∗

YES

∗ As shown in the following figure, perform measurement within 20 seconds after power ON.

Check item code [14].

Correct inter-unit cable.

Correct connection of connector.

Check indoor P.C. board.

Defect → Replace

Is DC280V applied between

terminals of the electrolytic condenser

Is power DC280V supplied to CDB? (CN03)

of IPDU main circuit?

YES

Is power DC7V supplied to CDB?

Are wiring between (CN800)

and

pin, and wiring between

IPDU and CDB correct?

CN06 ↔ CN800

YES

Is case thermo (CN500) connected?

Black

White

Inter-terminal block

Correct connection of connector.

S5277G

Replace IPDU.

YES

Does case thermo. operate?

Check indoor P.C. board.

Defect → Replace

– 96 –

YES

Check/Correct charged

refrigerant amount.

Page 97

[E10 error]

Is there no disorder of power supply?

Check indoor control P.C. board.

Defect → Replace

[E18 error]

Is inter-unit cable

of A and B normal?

Is there no disconnection

or contact error of connector

on harness from terminal block

of indoor unit?

YES

Check power supply voltage.

Correct lines.

Check and eliminate noise, etc.

Correct inter-unit cable

of remote controller.

Correct connection of connector.

Check circuit wiring.

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is T win or Triple control?

YES

Is there no contact error

of indoor/outdoor inter-unit cable

(Signal line) of the main unit?

YES

[E08, L03, L07, L08 error]

connection status of indoor unit

Check power

(Connect again).

Correct indoor/outdoor inter-unit cable

(Serial signal line).

Check indoor P.C. board.

Defect → Replace

If the above error is detected when power supply turned on, the mode enters automatically in the automatic address set mode. (Check code is not output.)

However, if the above error is detected during the automatic address set mode, a check code may be output.

– 97 –

Page 98

[L09 error]

Is not yet capacity setting

Check indoor P.C. board.

[L20 error]

of indoor unit set up?

Defect → Replace

Are wiring connections to communication lines

X and Y normal?

YES

Is the central controller

[98] displayed?

YES

Set capacity data of indoor unit.

(Setup item code (DN)=11)

Correct wiring connection.

Check indoor P.C. board.

Defect → Replace

Is the indoor remote controller

[L20] displayed?

YES

Is not the multiple same central

control system addresses connected?

Check central controller

(including network adapter).

Defect → Replace

[L30 error]

Are outside devices of

connector CN80 connected?

YES

Correct central control system address.

Check indoor P.C. board.

Defect → Replace

Do outside devices normally work?

YES

Check cause of operation.

Check outside devices.

Defect → Replace

– 98 –

Page 99

[b7 error] (Central controller)

Is group operation carried out?

main/sub remote controllers?

indoor unit and outdoor unit.

[P01 error]

any connection error/disconnection

YES

Is there check code

on the follower unit of

YES

Check the corresponding

Isn’t there

of CN076 connector?

YES

Check indoor P.C. board.

Defect à Replace

Correct wiring circuit

of the connector connection.

Is the condenser normal?

YES

Isn’t there mechanical lock

of the fan motor?

Replace fan motor.

Check indoor P.C. board.

Defect → Replace

YES

Replace condenser.

Replace fan motor.

– 99 –

Page 100

[P10 error]

Is connection of

float switch connector

(Indoor control board CN34)

normal?

YES

Does float switch work?

YES

Does drain pump work?

YES

Is circuit wiring normal?

Check and correct wiring

and wire circuit.

Is power of

drain pump turned on?

YES

Correct connection

of connector.

YES

∗

Replace drain pump.

Check the drain pipe, etc.

Check wiring.

∗ Check that voltage of 1-3 pin of CN68 on the indoor P.C. board is +200V.

[F10 error]

Is connection of TA sensor connector

(CN104 on indoor P.C. board) correct?

YES

Are characteristics of

TA sensor resistance value normal?

YES

Check indoor P.C. board.

Defect → Replace

∗∗

Check indoor P.C. board.

Defect → Replace

Correct connection of connector.

Replace TA sensor.

Refer to 10-2-6. Relational graph of

∗∗

temperature sensor resistance value and temperature Characteristics-1.

– 100 –

Toshiba RAV-SM1603ATZG-E, RAV-SM1603DT-A, RAV-SM1603ATZ-E, RAV-SM1403DT-A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual