Toshiba RAV-SM2804AT8ZG-E, RAV-SM2804AT7ZG, RAV-SM2804AT8-E, RAV-SM2804AT7Z, RAV-SM2244AT8Z-E User Manual

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SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

FILE NO. A09-004

OUTDOOR UNIT

RAV-SM2244AT8-E RAV-SM2804AT8-E RAV-SM2244AT8Z-E RAV-SM2804AT8Z-E RAV-SM2244AT8ZG-E RAV-SM2804AT8ZG-E

RAV-SM2244AT7 RAV-SM2804AT7 RAV-SM2244AT7Z RAV-SM2804AT7Z RAV-SM2244AT7ZG RAV-SM2804AT7ZG

R410A

PRINTED IN JAPAN, Jun, 2009 ToMo

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 service person, and not for the customer.

CONTENTS

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

1. SPECIFICATIONS .................................................................................... 11

1-1. Indoor Unit......................................................................................................... 11

1-2. Outdoor Unit...................................................................................................... 24

1-3. Operation Characteristic Curve....................................................................... 25

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)....................................... 27

2-1. Outdoor Unit...................................................................................................... 27

3. OUTDOOR UNIT REFRIGERANTING CYCLE DIAGRAM ...................... 31

4. WIRING DIAGRAM................................................................................... 33

4-1. Outdoor Unit...................................................................................................... 33

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

5-1.Outdoor Unit ......................................................................................................... 34

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

– 2 –

7. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS ........... 45

7-1. Outdoor Unit Control........................................................................................ 45

7-2. Outline of Main Controls .................................................................................. 49

8. TROUBLESHOOTING .............................................................................. 55

8-1. Summary of Troubleshooting........................................................................... 55

8-2. Troubleshooting................................................................................................ 57

9. SETUP AT LOCAL SITE AND OTHERS .................................................. 80

9-1. Calling of Error History .................................................................................... 80

9-2. Group Control Operation ................................................................................. 80

9-3. Outdoor Unit...................................................................................................... 82

10. ADDRESS SETUP.................................................................................... 89

10-1. Address Setup Procedure................................................................................ 89

10-2. Address Setup & Group Control...................................................................... 90

10-3. Remote Controller Wiring................................................................................. 93

10-4. Address Setup (Manual setting from remote controller)............................... 94

10-5. Confirmation of Indoor Unit No. Position ....................................................... 95

11. INSTALLATION MANUAL ........................................................................ 97

12. REPLACEMENT OF

THE SERVICE P.C. BOARD (4316V392) MCC-1599 ............................. 110

13. HOW TO EXCHANGE COMPRESSOR .................................................. 111

13-1. Exchanging Procedure of Compressor (Outline)......................................... 111

13-2. Exchange of Compressor .............................................................................. 111

14. DETACHMENTS ..................................................................................... 112

14-1. Outdoor Unit.................................................................................................... 112

15. EXPLODED VIEWS AND PARTS LIST .................................................. 124

15-1. Outdoor Unit.................................................................................................... 124

15-2. Inverter Assembly........................................................................................... 126

15-3. Outdoor Unit.................................................................................................... 128

15-4. Inverter Assembly........................................................................................... 130

– 3 –

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 diagram (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.

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

Turn off breaker.

Execute discharge

between terminals.

Prohibition

electric insulator.

• Attach a plate indicating “WORKING” or others on the breaker so that you don’t accidentally turn on the breaker during work.

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

When removing the front panel or cabinet, execute short-circuit and discharge between high-voltage 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.

– 4 –

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 por t 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.

– 5 –

Insulator check

Ventilation

Be attentive to

electric shock

Compulsion

WARNING

After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 2MΩ or more between the charge section and the non-charge 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.

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 work 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.

– 6 –

• 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 refr igerant 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 refr igerant 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 capillary 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. How ever clear impurities when using them.

– 7 –

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

Yes ∗ (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 carr ied 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 ser ve also for R22 are necessary as the general tools.

1) Vacuum pump. Use vacuum pump by attaching vacuum pump adapter.

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

7) Screwdriver (+, –)

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

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

2) Thermometer 4) Electroscope

– 8 –

n Combination Pattern (Indoor Unit / Outdoor Unit)

<RAV-SM2244AT series> Simultaneous twin

4-way air discharge

cassette type

RAV-SM1104UT-E RAV-SM1104UT-E

Concealed

duct type

RAV-SM1102BT-E RAV-SM1102BT-E

Simultaneous triple

4-way air discharge

cassette type

RAV-SM804UT-E RAV-SM804UT-E RAV-SM804UT-E

Concealed

duct type

RAV-SM802BT-E RAV-SM802BT-E RAV-SM802BT-E

Simultaneous double twin

4-way air discharge

cassette type

RAV-SM564UT-E RAV-SM564UT-E RAV-SM564UT-E RAV-SM564UT-E

Compact 4-way

cassette (600×600) type

RAV-SM562MUT-E RAV-SM562MUT-E RAV-SM562MUT-E RAV-SM562MUT-E

Ceiling type

RAV-SM1102CT-E RAV-SM1102CT-E

Ceiling type

RAV-SM802CT-E RAV-SM802CT-E RAV-SM802CT-E

Slim duct type

RAV-SM564SDT-E RAV-SM564SDT-E RAV-SM564SDT-E RAV-SM564SDT-E

High wall type

(2 series)

RAV-SM802KRT-E RAV-SM802KRT-E RAV-SM802KRT-E

Concealed

duct type

RAV-SM562BT-E RAV-SM562BT-E RAV-SM562BT-E RAV-SM562BT-E

Ceiling type

RAV-SM562CT-E RAV-SM562CT-E RAV-SM562CT-E RAV-SM562CT-E

High wall type

(2 series)

RAV-SM562KRT-E RAV-SM562KRT-E RAV-SM562KRT-E RAV-SM562KRT-E

<RAV-SM2804AT series> Simultaneous twin

4-way air discharge

cassette type

RAV-SM1404UT-E RAV-SM1404UT-E

Concealed

duct type

RAV-SM1402BT-E RAV-SM1402BT-E

Simultaneous triple

4-way air discharge

cassette type

RAV-SM804UT-E RAV-SM804UT-E RAV-SM804UT-E

Concealed

duct type

RAV-SM802BT-E RAV-SM802BT-E RAV-SM802BT-E

Simultaneous double twin

4-way air discharge

cassette type

RAV-SM804UT-E RAV-SM804UT-E RAV-SM804UT-E RAV-SM804UT-E

Concealed

duct type

RAV-SM802BT-E RAV-SM802BT-E RAV-SM802BT-E RAV-SM802BT-E

Ceiling type

RAV-SM1402CT-E RAV-SM1402CT-E

Ceiling type

RAV-SM802CT-E RAV-SM802CT-E RAV-SM802CT-E

Ceiling type

RAV-SM802CT-E RAV-SM802CT-E RAV-SM802CT-E RAV-SM802CT-E

High wall type

(2 series)

RAV-SM802KRT-E RAV-SM802KRT-E RAV-SM802KRT-E

High wall type

(2 series)

RAV-SM802KRT-E RAV-SM802KRT-E RAV-SM802KRT-E RAV-SM802KRT-E

– 9 –

RAV-SM2244AT series

Branch kit

Slimultaneous twin

Simultaneous triple

Simultaneous double twin

Slimultaneous twin

Simultaneous triple

Simultaneous double twin

SM110 — SM110

SM80 — SM80 — SM80

SM56 — SM56 — SM56 — SM56

RAV-SM2804AT series

SM140 — SM140

SM80 — SM80 — SM80

SM80 — SM80 — SM80 — SM80

RBC-TWP101E

RBC-TRP100E

RBC-DTWP101E

Branch kit

RBC-TWP101E

RBC-TRP100E

RBC-DTWP101E

– 10 –

1. SPECIFICATIONS

1-1. Indoor Unit

1-1-1. 4-Way Cassette Type

Indoor unit 1 RAV-SM 1104UT-E 1404UT-E 1104UT-E 1404UT-E

Model Indoor unit 2 RAV-SM 1104UT-E 1404UT-E 1104UT-E 1404UT-E

Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 10.09 – 9.24 13.24 – 12.12 10.09 13.24 Power consumption (kW) 6.24 8.19 6.24 8.19

Cooling Power factor (%) 94 94 94 94

EER 3.21 2.81 3.21 2.81

Energy efficiency class ∗ AC—— Electrical characteristics

Running current (A) 9.41 – 8.61 12.09 – 11.07 9.41 12.09

Power consumption (kW) 5.82 7.48 5.82 7.48

Heating Power factor (%) 94 94 94 94

COP 3.85 3.61 3.85 3.61

Energy efficiency class ∗ AA——

Maximum current (A) 18 22 18 22

Fan Turbo fan Turbo fan Turbo fan Turbo fan Fan unit Standard air flow H/M/L (m³/min.) 33.5/24.0/19.5 35.0/24.0/20.5 33.5/24.0/19.5 35.0/24.0/20.5

Motor (W) 68 72 68 72 Sound pressure level H/M/L (dB•A) 43 / 38 / 33 44 / 38 / 34 43 / 38 / 33 44 / 38 / 34 Sound power level H/M/L (dB•A) 58 / 53 / 48 59 / 53 / 49 58 / 53 / 48 59 / 53 / 49

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Outdoor unit – Pipe branch

Connecting pipe

Pipe branch – Indoor unit

Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

Gas side (mm) 28.6 28.6 28.6 28.6 Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9 Liquid side (mm) 9.5 9.5 9.5 9.5

∗ : IEC standard

– 11 –

1-1-2. Duct Type

Indoor unit 1 RAV-SM 1102BT-E 1402BT-E 1102BT-E 14002BT-E

Model Indoor unit 2 RAV-SM 1102BT-E 1402BT-E 1102BT-E 1402BT-E

Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44

Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41

Energy efficiency class ∗ CE—— Electrical characteristics

Heating Power factor (%) 94 94 94 94

Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80

Power consumption (kW) 6.40 7.92 6.40 7.92

COP 3.50 3.41 3.50 3.41

Energy efficiency class ∗ BB——

Maximum current (A) 18 22 18 22

Fan Centrifugal Centrifugal Centrifugal Centrifugal Fan unit Standard air flow H/M/L (m³/min.) 27.0/23.0/18.9 33.0/28.0/23.1 27.0/23.0/18.9 33.0/28.0/23.1

Motor (W) 120 120 120 120 Sound pressure level H/M/L (dB•A) 42 / 39 / 36 44 / 41 / 38 42 / 39 / 36 44 / 41 / 38 Sound power level H/M/L (dB•A) 57 / 54 / 51 59 / 56 / 53 57 / 54 / 51 59 / 56 / 53

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Gas side (mm) 28.6 28.6 28.6 28.6

Outdoor unit – Pipe branch

Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9

Pipe branch – Indoor unit

Liquid side (mm) 9.5 9.5 9.5 9.5 Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

∗ : IEC standard

– 12 –

1-1-3. Ceiling Type

Indoor unit 1 RAV-SM 1102CT-E 1402CT-E 1102CT-E 1402CT-E

Model Indoor unit 2 RAV-SM 1102CT-E 1402CT-E 1102CT-E 1402CT-E

Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41

Energy efficiency class ∗ CE—— Electrical characteristics

Heating Power factor (%) 94 94 94 94

Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80

Power consumption (kW) 6.40 7.92 6.40 7.92

COP 3.50 3.41 3.50 3.41

Energy efficiency class ∗ BB——

Maximum current (A) 18 22 18 22

Fan Centrifugal Centrifugal Centrifugal Centrifugal Fan unit Standard air flow H/M/L (m³/min.) 27.5/24.0/21.2 30.0/26.0/23.1 27.5/24.0/21.2 30.0/26.0/23.1

Motor (W) 120 120 120 120 Sound pressure level H/M/L (dB•A) 41 / 38 / 35 43 / 40 / 37 41 / 38 / 35 43 / 40 / 37 Sound power level H/M/L (dB•A) 56 / 53 / 50 58 / 55 / 52 56 / 53 / 50 58 / 55 / 52

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Gas side (mm) 28.6 28.6 28.6 28.6

Outdoor unit – Pipe branch

Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9

Pipe branch – Indoor unit

Liquid side (mm) 9.5 9.5 9.5 9.5 Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

∗ : IEC standard

– 13 –

1-1-4. 4-Way Cassette Type

Indoor unit 1 RAV-SM 804UT-E 804UT-E 804UT-E 804UT-E

Model

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Electrical characteristics

Indoor unit 2 RAV-SM 804UT-E 804UT-E 804UT-E 804UT-E Indoor unit 3 RAV-SM 804UT-E 804UT-E 804UT-E 804UT-E Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE—— Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

Heating Power factor (%) 94 94 94 94

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22 Fan Turbo fan Turbo fan Turbo fan Turbo fan

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

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

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Gas side (mm) 28.6 28.6 28.6 28.6

Outdoor unit – Pipe branch

Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9

Pipe branch – Indoor unit

Liquid side (mm) 9.5 9.5 9.5 9.5 Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

∗ : IEC standard

– 14 –

1-1-5. Duct Type

Indoor unit 1 RAV-SM 802BT-E 802BT-E 802BT-E 802BT-E

Model

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Electrical characteristics

Indoor unit 2 RAV-SM 802BT-E 802BT-E 802BT-E 802BT-E Indoor unit 3 RAV-SM 802BT-E 802BT-E 802BT-E 802BT-E Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE—— Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

Heating Power factor (%) 94 94 94 94

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22 Fan Centrifugal Centrifugal Centrifugal Centrifugal

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

Motor (W) 120 120 120 120 Sound pressure level H/M/L (dB•A) 40 / 37 / 34 40 / 37 / 34 40 / 37 / 34 40 / 37 / 34 Sound power level H/M/L (dB•A) 55 / 52 / 49 55 / 52 / 49 55 / 52 / 49 55 / 52 / 49

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Gas side (mm) 28.6 28.6 28.6 28.6

Outdoor unit – Pipe branch

Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9

Pipe branch – Indoor unit

Liquid side (mm) 9.5 9.5 9.5 9.5 Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

∗ : IEC standard

– 15 –

1-1-6. Ceiling Type

Indoor unit 1 RAV-SM 802CT-E 802CT-E 802CT-E 802CT-E

Model

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Electrical characteristics

Indoor unit 2 RAV-SM 802CT-E 802CT-E 802CT-E 802CT-E Indoor unit 3 RAV-SM 802CT-E 802CT-E 802CT-E 802CT-E Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE—— Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

Heating Power factor (%) 94 94 94 94

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22 Fan Centrifugal Centrifugal Centrifugal Centrifugal

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

Motor (W) 60 60 60 60 Sound pressure level H/M/L (dB•A) 38 / 36 / 33 38 / 36 / 33 38 / 36 / 33 38 / 36 / 33 Sound power level H/M/L (dB•A) 53 / 51 / 48 53 / 51 / 48 53 / 51 / 48 53 / 51 / 48

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Gas side (mm) 28.6 28.6 28.6 28.6

Outdoor unit – Pipe branch

Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9

Pipe branch – Indoor unit

Liquid side (mm) 9.5 9.5 9.5 9.5 Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

∗ : IEC standard

– 16 –

1-1-7. High Wall T ype

Indoor unit 1 RAV-SM 802KRT-E 802KRT-E 802KRT-E 802KRT-E

Model

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Electrical characteristics

Indoor unit 2 RAV-SM 802KRT-E 802KRT-E 802KRT-E 802KRT-E Indoor unit 3 RAV-SM 802KRT-E 802KRT-E 802KRT-E 802KRT-E Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE—— Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

Heating Power factor (%) 94 94 94 94

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22 Fan Cross flow fan Cross flow fan Cross flow fan Cross flow fan

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

Motor (W) 30 30 30 30 Sound pressure level H/M/L (dB•A) 45 / 41 / 36 45 / 41 / 36 45 / 41 / 36 45 / 41 / 36 Sound power level H/M/L (dB•A) 60 / 56 / 51 60 / 56 / 51 60 / 56 / 51 60 / 56 / 51

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Gas side (mm) 28.6 28.6 28.6 28.6

Outdoor unit – Pipe branch

Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9

Pipe branch – Indoor unit

Liquid side (mm) 9.5 9.5 9.5 9.5 Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

∗ : IEC standard

– 17 –

1-1-8. 4-Way Cassette Type

Indoor unit 1 RAV-SM 564UT-E 804UT-E 564UT-E 804UT-E Indoor unit 2 RAV-SM 564UT-E 804UT-E 564UT-E 804UT-E

Model Indoor unit 3 RAV-SM 564UT-E 804UT-E 564UT-E 804UT-E

Indoor unit 4 RAV-SM 564UT-E 804UT-E 564UT-E 804UT-E Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41

Energy efficiency class ∗ CE—— Electrical characteristics

Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80

Power consumption (kW) 6.40 7.92 6.40 7.92

Heating Power factor (%) 94 94 94 94

COP 3.50 3.41 3.50 3.41

Energy efficiency class ∗ BB——

Maximum current (A) 18 22 18 22

Fan Turbo fan Turbo fan Turbo fan Turbo fan Fan unit Standard air flow H/M/L (m³/min.) 17.5/14.5/13.0 20.5/16.0/13.5 17.5/14.5/13.0 20.5/16.0/13.5

Motor (W) 14 20 14 20 Sound pressure level H/M/L (dB•A) 32 / 29 / 28 35 / 31 / 28 32 / 29 / 28 35 / 31 / 28 Sound power level H/M/L (dB•A) 47 / 44 / 43 50 / 46 / 43 47 / 44 / 43 50 / 46 / 43

Outdoor unit

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Min. length (m) 7.5 7.5 7.5 7.5

Outdoor lower (m) 30 30 30 30

Height difference

Outdoor high (m) 30 30 30 30

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Outdoor unit – Pipe branch

Connecting pipe

Pipe branch – Indoor unit

Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

Gas side (mm) 28.6 28.6 28.6 28.6 Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9 Liquid side (mm) 9.5 9.5 9.5 9.5

∗ : IEC standard

– 18 –

1-1-9. Compact 4-Way Cassette (600 × 600) Type

Indoor unit 1 RAV-SM562MUT-E RAV-SM562MUT-E Indoor unit 2 RAV-SM562MUT-E RAV-SM562MUT-E

Model Indoor unit 3 RAV-SM562MUT-E RAV-SM562MUT-E

Indoor unit 4 RAV-SM562MUT-E RAV-SM562MUT-E Outdoor unit RAV-SM2244AT8-E RAV-SM2244AT7

Cooling capacity (kW) 20.0 20.0 Heating capacity (kW) 22.4 22.4 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 11.51

Power consumption (kW) 7.12 7.12

Cooling Power factor (%) 94 94

EER 2.81 2.81

Energy efficiency class ∗ C — Electrical

characteristics

Heating Power factor (%) 94 94

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

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

Max. total length (m) 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133

Connecting pipe

Sound pressure level Cooling / Heating (dB•A) 56 / 57 56 / 57 Sound power level Cooling / Heating (dB•A) 72 / 74 72 / 74

Min. length (m) 7.5 7.5

Height difference

Fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 Outdoor unit –

First pipe branch

First pipe branch – Second pipe branch

Second pipe branch – Indoor unit

Running current (A) 10.34 – 9.47 10.34

Power consumption (kW) 6.40 6.40

COP 3.50 3.50

Energy efficiency class ∗ B —

Maximum current (A) 18 18

Fan Turbo fan Turbo fan

Motor (W) 60 60

Outdoor unit

Outdoor lower (m) 30 30 Outdoor high (m) 30 30

Gas side (mm) 28.6 28.6 Liquid side (mm) 12.7 12.7 Gas side (mm) 15.9 15.9 Liquid side (mm) 9.5 9.5 Gas side (mm) 12.7 12.7 Liquid side (mm) 6.4 6.4

– 19 –

∗ : IEC standard

1-1-10. Slim Duct Type

Indoor unit 1 RAV-SM564SDT-E RAV-SM564SDT-E Indoor unit 2 RAV-SM564SDT-E RAV-SM564SDT-E

Model Indoor unit 3 RAV-SM564SDT-E RAV-SM564SDT-E

Indoor unit 4 RAV-SM564SDT-E RAV-SM564SDT-E Outdoor unit RAV-SM2244AT8-E RAV-SM2244AT7

Cooling capacity (kW) 20.0 20.0 Heating capacity (kW) 22.4 22.4 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 11.51

Power consumption (kW) 7.12 7.12

Cooling Power factor (%) 94 94

EER 2.81 2.81

Electrical characteristics

Heating Power factor (%) 94 94

Fan Centrifugal fan Centrifugal fan Standard air flow H/M/L (m³/min.) 13.0 / 11.3 / 9.7 13.0 / 11.3 / 9.7

Fan unit Motor (W) 60 60

Extermal static pressure

Sound pressure level

Sound power level

Max. total length (m) 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133

Connecting pipe

Sound pressure level Cooling / Heating (dB•A) 56 / 57 56 / 57 Sound power level Cooling / Heating (dB•A) 72 / 74 72 / 74

Min. length (m) 7.5 7.5

Height difference

Fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 Outdoor unit –

First pipe branch

First pipe branch – Second pipe branch

Second pipe branch – Indoor unit

Energy efficiency class ∗ C —

Running current (A) 10.34 – 9.47 10.34

Power consumption (kW) 6.40 6.40

COP 3.50 3.50

Energy efficiency class ∗ B —

Maximum current (A) 18 18

Standard (at shipment) (Pa) 10 10

Set up for tap exchange (Pa) 10 / 20 / 35 / 50 10 / 20 / 35 / 50 Under air inlet H/M/L (dB•A) 45 / 40 / 36 45 / 40 / 36 Back air inlet H/M/L (dB•A) 33 / 31 / 28 33 / 31 / 28 Under air inlet H/M/L (dB•A) 60 / 55 / 51 60 / 55 / 51 Back air inlet H/M/L (dB•A) 48 / 46 / 43 48 / 46 / 43

Outdoor unit

Outdoor lower (m) 30 30

Outdoor high (m) 30 30

Gas side (mm) 28.6 28.6

Liquid side (mm) 12.7 12.7 Gas side (mm) 15.9 15.9 Liquid side (mm) 9.5 9.5 Gas side (mm) 12.7 12.7 Liquid side (mm) 6.4 6.4

– 20 –

∗ : IEC standard

1-1-11. Duct Type

Indoor unit 1 RAV-SM 562BT-E 802BT-E 562BT-E 802BT-E Indoor unit 2 RAV-SM 562BT-E 802BT-E 562BT-E 802BT-E

Model Indoor unit 3 RAV-SM 562BT-E 802BT-E 562BT-E 802BT-E

Indoor unit 4 RAV-SM 562BT-E 802BT-E 562BT-E 802BT-E Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE——

Electrical characteristics

Heating Power factor (%) 94 94 94 94

Fan Centrifugal Centrifugal Centrifugal Centrifugal

Fan unit Standard air flow H/M/L (m³/min.) 13.0/11.9/9.8 19.0/16.2/13.3 13.0/11.9/9.8 19.0/16.2/13.3

Motor (W) 120 120 120 120 Sound pressure level H/M/L (dB•A) 40 / 37 / 33 40 / 37 / 34 40 / 37 / 33 40 / 37 / 34 Sound power level H/M/L (dB•A) 55 / 52 / 48 55 / 52 / 49 55 / 52 / 48 55 / 52 / 49

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

Min. length (m) 7.5 7.5 7.5 7.5

Height difference

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Outdoor unit –

First pipe branch

First pipe branch –

Second pipe branch

Second pipe branch –

Indoor unit

Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22

Outdoor unit

Outdoor lower (m) 30 30 30 30 Outdoor high (m) 30 30 30 30

Gas side (mm) 28.6 28.6 28.6 28.6 Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9 Liquid side (mm) 9.5 9.5 9.5 9.5 Gas side (mm) 12.7 15.9 12.7 15.9 Liquid side (mm) 6.4 9.5 6.4 9.5

– 21 –

∗ : IEC standard

1-1-12. Ceiling Type

Indoor unit 1 RAV-SM 562CT-E 802CT-E 562CT-E 802CT-E

Indoor unit 2 RAV-SM 562CT-E 802CT-E 562CT-E 802CT-E Model Indoor unit 3 RAV-SM 562CT-E 802CT-E 562CT-E 802CT-E

Indoor unit 4 RAV-SM 562CT-E 802CT-E 562CT-E 802CT-E

Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE——

Electrical characteristics

Heating Power factor (%) 94 94 94 94

Fan Centrifugal Centrifugal Centrifugal Centrifugal Fan unit Standard air flow H/M/L (m³/min.) 13.0/11.2/10.0 18.5/16.7/14.6 13.0/11.2/10.0 18.5/16.7/14.6

Motor (W) 60 60 60 60 Sound pressure level H/M/L (dB•A) 36 / 33 / 30 38 / 36 / 33 36 / 33 / 30 38 / 36 / 33 Sound power level H/M/L (dB•A) 51 / 48 / 45 53 / 51 / 48 51 / 48 / 45 53 / 51 / 48

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

Min. length (m) 7.5 7.5 7.5 7.5

Height difference

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Outdoor unit –

First pipe branch

First pipe branch –

Second pipe branch

Second pipe branch –

Indoor unit

Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22

Outdoor unit

Outdoor lower (m) 30 30 30 30 Outdoor high (m) 30 30 30 30

– 22 –

∗ : IEC standard

1-1-12. High Wall T ype

Indoor unit 1 RAV-SM 562KRT-E 802KRT-E 562KRT-E 802KRT-E

Indoor unit 2 RAV-SM 562KRT-E 802KRT-E 562KRT-E 802KRT-E Model Indoor unit 3 RAV-SM 562KRT-E 802KRT-E 562KRT-E 802KRT-E

Indoor unit 4 RAV-SM 562KRT-E 802KRT-E 562KRT-E 802KRT-E

Outdoor unit RAV-SM 2244AT8-E 2804AT8-E 2244AT7 2804AT7

Cooling capacity (kW) 20.0 23.0 20.0 23.0 Heating capacity (kW) 22.4 27.0 22.4 27.0 Power supply 3 phase 380 – 415V 50Hz 3 phase 380V 60Hz

Indoor unit

Running current (A) 11.51 – 10.54 15.44 – 14.13 11.51 15.44 Power consumption (kW) 7.12 9.55 7.12 9.55

Cooling Power factor (%) 94 94 94 94

EER 2.81 2.41 2.81 2.41 Energy efficiency class ∗ CE——

Electrical characteristics

Heating Power factor (%) 94 94 94 94

Fan Cross flow fan Cross flow fan Cross flow fan Cross flow fan Fan unit Standard air flow H/M/L (m³/min.) 14.0/12.5/10.7 18.5/14.6/12.2 14.0/12.5/10.7 18.5/14.6/12.2

Motor (W) 30 30 30 30 Sound pressure level H/M/L (dB•A) 39 / 36 / 33 45 / 41 / 36 39 / 36 / 33 45 / 41 / 36 Sound power level H/M/L (dB•A) 54 / 51 / 48 60 / 56 / 51 54 / 51 / 48 60 / 56 / 51

Max. total length (m) 70 70 70 70

Outer dimension

Fan unit Standard air flow high (m³/min.) 133 133 133 133

Connecting pipe

Sound pressure level Cooling / Heating (dB•A) 56 / 57 57 / 58 56 / 57 57 / 58 Sound power level Cooling / Heating (dB•A) 72 / 74 74 / 75 72 / 74 74 / 75

Min. length (m) 7.5 7.5 7.5 7.5

Height difference

Fan Propeller fan Propeller fan Propeller fan Propeller fan

Motor (W) 100 + 100 100 + 100 100 + 100 100 + 100

Outdoor unit –

First pipe branch

First pipe branch –

Second pipe branch

Second pipe branch –

Indoor unit

Running current (A) 10.34 – 9.47 12.80 – 11.72 10.34 12.80 Power consumption (kW) 6.40 7.92 6.40 7.92

COP 3.50 3.41 3.50 3.41 Energy efficiency class ∗ BB—— Maximum current (A) 18 22 18 22

Outdoor unit

Outdoor lower (m) 30 30 30 30 Outdoor high (m) 30 30 30 30

Gas side (mm) 28.6 28.6 28.6 28.6 Liquid side (mm) 12.7 12.7 12.7 12.7 Gas side (mm) 15.9 15.9 15.9 15.9 Liquid side (mm) 9.5 9.5 9.5 9.5 Gas side (mm) 12.7 12.7 12.7 12.7 Liquid side (mm) 6.4 9.5 6.4 9.5

– 23 –

∗ : IEC standard

1-2. Outdoor Unit

Model Outdoor unit RAV-SM

Power supply

Type

Compressor Motor (kW)

Pole Refrigerant charged (kg) Refrigerant control

Max. total length (m)

Min. length (m) Pipe

Outdoor lower (m)

Height difference

Outdoor higher (m)

Height (mm) Outer dimension Width (mm)

2244AT8-E 2804AT8-E 2244AT7 2804AT7

1 phase 380 – 415V 50Hz 1 phase 380V 60Hz

(Power exclusive to outdoor is required.)

Hermetic compressor Hermetic compressor

3.75 3.75 3.75 3.75 4444

5.9 5.9 5.9 5.9

Pulse motor valve Pulse motor valve

70 70 70 70

7.5 7.5 7.5 7.5 30 30 30 30 30 30 30 30

1540 1540 1540 1540

900 900 900 900

Depth (mm)

Appearance

Total weight (kg) Heat exchanger

Fan

Fan unit Standard air flow (m³/min.)

Motor (W)

Connecting pipe (Outdoor unit side)

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

Gas side (mm) Liquid side (mm)

320 320 320 320

Silky shade Silky shade

(Muncel 1Y8.5/0.5) (Muncel 1Y8.5/0.5)

134 134 134 134

Finned tube Finned tube

Propeller fan Propeller fan

133 133 133 133

100 + 100 100 + 100 100 + 100 100 + 100

19.1 19.1 19.1 19.1

12.7 12.7 12.7 12.7 56 / 57 57 / 58 56 / 57 57 / 58 72 / 74 74 / 75 72 / 74 74 / 75

46 to –15°C 46 to –15°C 15 to –20°C 15 to –20°C

– 24 –

1-3. Operation Characteristic Curve

SM224

SM280

SM224

SM280

SM224

SM280

SM224

SM280

• Operation characteristic curve <Digital Inverter>

RAV-SM2244AT8 (Z) (ZG) -E, RAV-SM2804AT8 (Z) (ZG) -E

Current (A)

0 20 40 60 80 100

SM280

SM224

• Conditions Indoor : DB27˚C/WB19˚C Outdoor : DB35˚C Air flow : High Pipe length : 7.5m 400V, 50Hz (3 phase)

Compressor speed (rps)

SM280

Current (A)

SM224

0 20406080100

• Conditions Indoor : DB20˚C Outdoor : DB7˚C/WB6˚C Air flow : High Pipe length : 7.5m 400V, 50Hz (3 phase)

Compressor speed (rps)

RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG)

SM280

Current (A)

0 20 40 60 80 100

SM280

SM224

• Conditions Indoor : DB27˚C/WB19˚C Outdoor : DB35˚C Air flow : High Pipe length : 7.5m 380V, 60Hz (3 phase)

Current (A)

0 20406080100

Compressor speed (rps)

SM280

SM224

• Conditions Indoor : DB20˚C Outdoor : DB7˚C/WB6˚C Air flow : High Pipe length : 7.5m 380V, 60Hz (3 phase)

Compressor speed (rps)

– 25 –

• Capacity variation ratio according to temperature

RAV-SM2244AT8 (Z) (ZG) -E, RAV-SM2804AT8 (Z) (ZG) -E RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG)

105

100

Capacity ratio (%)

32 33 34 35 36 37 38 394041 42 43 44 45 46

• Conditions Indoor : DB27˚C/WB19˚C Indoor air flow : High Pipe length : 7.5m

Outdoor temp. (˚C)

120 110 100

90 80 70 60 50

Capacity ratio (%)

40 30 20 10

-14-16-18-20 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10

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

Outdoor temp. (˚C)

– 26 –

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

2-1. Outdoor Unit

– 27 –

RBC-DTWP101E (Simultaneous Double Twin) <Branch pipe> <Joint pipe>

Inner

diameter

Ø D

Inner diameter

Ø C

Model

Gas side

Inner

diameter

Ø D

Outer diameter

Ø25.4

2422

Inner diameter

Ø28.6

1 pc.

ABCD

74 37 25.4 15.9 42 23 15.9 15.9

Q’ty

1 2

RBC-DTWP101E

Liquid side

43 23 15.9 12.7 35 18 12.7 9.5 34 14 9.5 9.5 36 14 9.5 6.4

2 1 2 2

– 28 –

RBC-TRP100E (Simultaneous Triple)

Header assembly

300

Inner diameter Ø25.4Inner diameter Ø12.7

Branch pipe assembly

80 80100

1 pc.

Inner diameter Ø15.9

100

80 80100

Inner diameter Ø9.52

1 pc.

Insulator

Gas side socket Liquid side socket

Outer diameter

Ø15.9

Ø12.7

Ø15.9

(External

diameter)

3 pcs. 3 pcs. 1 pc.

Ø25.4

(External

diameter)

1 pc. 1 pc.

Ø25.4

2422

Inner

diameter

Ø28.6

Ø6.4

Ø9.5

(External

diameter)

100

Ø9.5

Ø12.7

(External

diameter)

– 29 –

RBC-TWP101E (Simultaneous Twin) <Branch pipe> <Joint pipe>

Inner

diameter

Ø D

Inner diameter

Ø C

RBC-TWP101E

Model

Inner

diameter

Ø D

Gas side Liquid side

Outer diameter

Ø25.4

2422

Inner diameter

Ø28.6

1 pc.

ABCDQ’ty

74 37 25.4 15.9 1 35 18 12.7 9.5 1

– 30 –

3. OUTDOOR UNIT REFRIGERANTING CYCLE DIAGRAM

RAV-SM2244AT8 (Z) (ZG) -E, RAV-SM2804AT8 (Z) (ZG) -E RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG)

Solenoid valve

Check joint

Muffler

Ø45 × 230 L

TD sensor

Check

valve

Check joint

Low-pressure side

Pressure

sensor

High-pressure side

Pressure switch

4-way

valve

TO sensor

TL sensor

TE sensor

Distributor

Compressor

DA550A3F-11M

TS sensor

Accumulator

(8500cc) Ø161.6

Ø8, 2 rows, 60 stages + Ø9.5, 1 row, 60 stages

Heat exchanger

13-13 pass + under cool pass

Liquid tank

Ø45 × 420 L

: Cooling : Heating

: Strainer

PMV 1

PMV 2

Packed valve

Ø12.7

Ball valve

Ø19.1

– 31 –

Systematic diagram of refrigerating cycle

RAV-SM2244 series

Standard

Cooling Overload

Low load Standard

Heating Overload

Low load

Pressure

(MPa) (kg/cm²g)

Pd Ps Pd Ps

3.14 0.88 32.0 9.0

3.54 1.14 36.1 11.6

1.65 0.65 16.8 6.6

2.60 0.67 26.5 6.8

3.24 1.08 33.1 11.0

2.05 0.31 20.9 3.2

Discharge Suction

Pipe surface temperature (°C)

Indoor heat Outdoor heat

exchanger exchanger

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

84 14 10 37 88 17 16 46 41 7 5 0 73 2 42 2 77 14 52 13 76 –12 34 –11

Compressor

drive revolution

frequency

(rps)

∗

64 62 36 66 36 75

Indoor

fan

HIGH HIGH LOW HIGH LOW HIGH

Indoor/Outdoor

temp. conditions

(DB/WB) (°C)

Indoor Outdoor

27/19 35/– 32/24 43/–

18/15.5 –15/–

20/– 7/6 30/– 24/18 15/––10/(70%)

∗ This compressor has a 4-pole motor.

The value when compressor frequency (Hz) is measured by a clamp meter is twice the compressor revolution number (rps).

∗ This data is cycle data obtained by combining a four-way ceiling cassette simultaneous twin at a target pipe

length. Data will change depending on the mounted pipe length or combination with the indoor unit.

RAV-SM2804 series

Standard

Cooling Overload

Low load Standard

Heating Overload

Low load

Pressure

(MPa) (kg/cm²g)

Pd Ps Pd Ps

3.15 0.79 32.1 8.1

3.62 1.12 36.9 11.4

1.66 0.64 16.9 6.5

2.85 0.63 29.1 6.4

3.26 1.06 33.3 10.8

2.05 0.29 20.9 3.0

Discharge Suction

Pipe surface temperature (°C)

Indoor heat Outdoor heat

exchanger exchanger

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

87 11 9 41 89 18 16 48 42 6 5 0 80 1 47 2 78 14 53 12 81 –13 33 –12

Compressor

drive revolution

frequency

(rps)

∗

80 64 36 80 36 96

Indoor

fan

HIGH HIGH LOW HIGH LOW HIGH

Indoor/Outdoor

temp. conditions

(DB/WB) (°C)

Indoor Outdoor

27/19 35/– 32/24 43/–

18/15.5 –15/–

20/– 7/6 30/– 24/18 15/––10/(70%)

∗ This compressor has a 4-pole motor.

The value when compressor frequency (Hz) is measured by a clamp meter is twice the compressor revolution number (rps).

∗ This data is cycle data obtained by combining a four-way ceiling cassette simultaneous twin at a target pipe

length. Data will change depending on the mounted pipe length or combination with the indoor unit.

– 32 –

4. WIRING DIAGRAM

4-1. Outdoor Unit

RAV-SM2244AT8 (Z) (ZG) -E, RAV-SM2804AT8 (Z) (ZG) -E RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG)

Noise Filter

P.C. board MCC-1600

Compressor

IPDU board

MCC-1596

Interface (CDB)

P.C. board MCC-1599

Fan IPDU board

MCC-1597

MCC-1436

– 33 –

5. SPECIFICATIONS OF ELECTRICAL PARTS

5-1. Outdoor Unit

RAV-SM2244AT8 (Z) (ZG) -E, RAV-SM2804AT8 (Z) (ZG) -E RAV-SM2244AT7 (Z) (ZG), RAV-SM2804AT7 (Z) (ZG)

No.

Compressor

Outdoor fan motor

4-way valve coil

4-way valve coil (for AT7)

2-way valve coil

2-way valve coil (for AT7)

PMV coil

High pressure switch

Reactor

P.C. board (Compressor drive)

P.C. board (Fan motor drive)

P.C. board (Control)

P.C. board (Noise filter)

Parts name

Type

DA550A3F-11M

ICF-280-A100-1 STF-01AJ502E1 VHV-01AH553A1

VPV-MOAJ524C0

VPV-MOAH551B1

UKV-25D22

ACB-4UB83W

CH-44 CH-68

CH-56 MCC-1596 MCC-1597 MCC-1599 MCC-1600

Specifications

— DC 280 V, 100 W AC 220 – 240 V, 50 Hz AC 220 V, 60 Hz AC 220 – 240 V, 50 Hz AC 220 V, 60 Hz DC 12 V OFF : 4.15 MPa

1.4 mH, 25 A 18 mH, 5 A

5.8 mH, 18.5 A

—

P.C. board (Fan extention)

Outdoor temp. sensor (TO sensor)

Discharge temp. sensor (TD sensor)

Suction temp. sensor (TS sensor)

Heat exchanger sensor (TE sensor)

Heat exchanger mid. temp. sensor (TL sensor)

Fuse

Fuse (Mounted on P.C. board, MCC-1596)

Fuse (Mounted on P.C. board, MCC-1597)

Fuse (Mounted on P.C. board, MCC-1599)

Fuse (Mounted on P.C. board, MCC-1600)

Relay

Posistor

Compressor thermo.

MCC-1436

— — — — —

TLC 25A

GAC1 31.5A

SCT 31.5A

GDM 250V 15A

SCT 31.5A

FJL 250V 31.5A

ET 6.3A

EL200/240A2-F(M)

ZPR0YCE 101A 500

US-622

— 10 kΩ at 25°C 50 kΩ at 25°C 10 kΩ at 25°C 10 kΩ at 25°C 10 kΩ at 25°C 25 A, 250 V

31.5 A, 500 V T3.15 A, AC 250 V 15 A, 250 V T3.15 A, AC 250 V T3.15 A, AC 250 V T6.3 A, AC 250 V Contact : AC 480 V, 20A 100 Ω, 500 V OFF : 125 ± 4 °C, ON : 60 ± 5 °C

– 34 –

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 necessary to carry out installation/servicing safely while taking the following precautions into consideration.

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

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

2. Confir m the used refr igerant name, and use tools and materials exclusive for the refrigerant R410A.

The refrigerant name R410A is indicated on the visible place of the outdoor unit of the air conditioner using R410A as refrigerant.

To prevent mischarging, the diameter of the service port differs from that of R22.

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

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

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

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

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

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

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

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

7. Be sure to carr y 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 –

Table 6-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter

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

Outer diameter (mm)

6.4

9.5

12.7

15.9

R410A R22

0.80 0.80

1.00 1.00

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.

Table 6-2-2 Minimum thicknesses of socket joints

Nominal diameter

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

Reference outer diameter of

copper pipe jointed (mm)

6.4

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 –

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 3/4

Nominal

diameter

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

6.4

9.5

12.7

15.9

19.1

Outer diameter

(mm)

6.4

9.5

12.7

15.9

19.1

0.8

1.0

1.2

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

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

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

Thickness

(mm)

0.8

1.0

1.2

ABCD

9.1 9.2 6.5 13

13.2 13.5 9.7 20

16.6 16.0 12.9 23

19.7 19.0 16.0 25

24.0 — 19.2 28

Dimension (mm)

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

0.5 to 1.0 1.5 to 2.0 ——

Flare nut width

(mm)

17 22 26 29 36

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

19.1

Thickness

(mm)

0.8

1.0

Dimension (mm)

ABCD

9.1 9.2 6.5 13

13.0 13.5 9.7 20

16.2 16.0 12.9 20

19.4 19.0 16.0 23

23.3 24.0 19.2 34

– 37 –

Flare nut width

(mm)

17 22 24 27 36

45˚to 46˚

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 por tions 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.

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

Nominal

diameter

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

Outer diameter

(mm)

6.4

9.5

12.7

15.9

19.1

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)

100 to 120 (10.0 to 12.0)

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 –

6-3. Tools

6-3-1. Required Tools

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 refrigera-

tion cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and may cause a rupture or personal injury.

(INDOOR unit)

(Liquid side)

(OUTDOOR unit)

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

Opened

(Gas side)

Closed

Service port

– 39 –

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 –

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 bor ic 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 flow-meter to the Nitrogen gas cylinder.

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

3) Apply a seal onto the clearance between the piping material and inserted copper pipe for Nitrogen in order to prevent backflow of the Nitrogen gas.

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

5) Adjust the flow rate of Nitrogen gas so that it is lower than 0.05 m³/Hr or 0.02 MPa (0.2kgf/cm²) by means of the reducing valve.

6) After performing the steps above, keep the Nitrogen gas flowing until the pipe cools down to a certain extent (temperature at which pipes are touchable with hands).

7) Remove the flux completely after brazing.

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 –

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 inver ter R410A products installations.

WARNING

Confirming the existence of scratches or dents on the existing pipes and confirming the 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 works.

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 works.

• 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)

Reference outside

diameter (mm)

6.4

9.5

12.7

15.9

19.1

22.2

28.6

• 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)

• There is possibility that a large quantity of poor

oil or moisture remains inside of the pipe.

Wall thickness

(mm)

0.8

1.0

1.2

1.0

Material

— — — —

— Half hard Half hard

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

• There is possibility that copper green r ust 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 refr igerator 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 spar kle 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

• In the concurrent twin system, 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 system), 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

Operation System

Term

1 month or more

Less than 1 month

Every time

Curing manner

Pinching

Pinching or taping

– 42 –

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.

 When using a Ø19.1 mm pipe for the gas pipe of the first branching pipe machining size due to pipe compression.

→ 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

Bit 3 of SW802 → 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)

Ø19.1

Same

as above

(mm)

Ø19.1

24.0

23.319.416.213.09.0

Trial run

– 43 –

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

• Deterioration of copper pipe and heat insulator

• Before recovering the refrigerant in the existing system, perform a cooling operation for at least 30 minutes.

Cautions for using existing pipe

• Do not reuse a flare nut to prevent gas leaks. 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 leaks.

• There may be a problem with the pressure resistance of the branching pipes of the existing piping.

Replace them with branch pipes (sold separately).

• When using a Ø19.1 mm gas pipe for the existing piping, set bit 3 of SW802 (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.

SW802

When shipped from factory When using existing pipe

1234

6-6-7. Recovering Refrigerant

Use the refrigerant recovery equipment to recover the refrigerant.

When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.

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

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

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

Reference outside

diameter (mm)

6.4

9.5

12.7

15.9

19.1

22.2

28.6

Wall thickness

(mm)

0.8

1.0

1.2

1.0

Material

— — — —

— Half hard Half hard

• Do not use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.

– 44 –

7. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS

7-1. Outdoor Unit Control

7-1-1. Print Circuit Board, MCC-1596 (Compressor IPDU)

CN851

Connector for MCC-1597 (CN505)

(Red)

CN07

(Blue)

, CN08

Terminal for reactor CH44

(Blue)

CN101

Connector for MCC-1597 (CN502)

(White)

CN03

(Black)

Terminal for power relay

F02

Electric circuit protective fuse (500V, 31.5A)

CN02

(White)

Terminal for MCC-1600 (CN17)

F01

Electric circuit protective fuse (500V, 31.5A)

CN201

Compressor output terminal

(Red)

, CN202

(White)

, CN203

(Black)

CN09

(Yellow)

Terminal for reactor CH44

, CN10

(Yellow)

CN01

(Red)

Terminal for power relay

CN04

(Red)

Terminal for PTC thermistor

– 45 –

7-1-2. Print Circuit Board, MCC-1597 (F an Motor IPDU)

CN750

(White)

Fan motor output (Upper side)

CN700

Connector for MCC-1436 (CN03 or CN07)

(Blue)

CN500

Connector for MCC-1600 (CN23) and reactor CH68

(Red)

CN504

(Blue)

Connector for MCC-1599 (CN802)

P501

(Black)

Lead wire for grounding

CN602

(Black)

Connector for MCC-1600 (CN51)

CN505

(Red)

Connector for MCC-1596 (CN851)

– 46 –

F500

Electric circuit protective fuse (250V, 15A)

CN502

Connector for MCC-1596 (CN101)

(White)

7-1-3. Print Circuit Board, MCC-1599 (Interface (CDB))

CN708

Connector for power relay coil

CN702

2-way valve connector

(White)

(Blue)

CN02

(Red)

Connector for MCC-1600 (CN10 and CN19)

CN608

Connector for MCC-1600 (CN50)

(White)

CN802

Connector for MCC-1597 (CN504)

(White)

CN700

4-way valve connector

(Yellow)

F01

Power supply protective fuse (250V, 3.15A)

Temp.sensor connector

CN604 CN603 CN602 CN601 CN600

Specific operation switch

SW801

(White) TL sensor (White) TD sensor

(Yellow) TO sensor

(White) TE sensor (White) TS sensor

SW804 SW805 SW806

Display select switch

SW800

SW803

Initial setting switch

SW802

Power-ON,error display LED

D800

D804

D805

(Green)

(Yellow)

CN690

High-pressure switch connector

(Green)

CN704

Compressor ON out put connector

(Blue)

CN609

(Blue)

Case thermostat connector

CN610

Outside input connector

CN606

Low-pressure sensor connector

(Yellow)

(White)

– 47 –

CN711

PMV2 Connector

CN710

PMV1 Connector

(White)

Indoor/Outdoor communication signal LED

D503

(Green), (Outdoor → Indoor)

D502

CN01

Inter-unit cable connector

(Orange), (Indoor → Outdoor)

(White)

7-1-4. Print Circuit Board, MCC-1600 (Noise Filter)

CN05

(Red)

ower supply terminal (L1)

F01

aristor protective fuse

(250V, 6.3A)

CN06

(White)

ower supply terminal (L2)

F02

aristor protective fuse

(250V, 6.3A)

CN07

(Black)

ower supply terminal (L3)

F03

aristor protective fuse

(250V, 6.3A)

CN20

(White)

ower supply terminal (L2)

CN08

(Gray)

eutral terminal

CN10

(Red)

erminal for MCC-1599 (CN02) and Terminal for PTC thermistor

CN16

(Red)

erminal for power relay

CN17

(White)

erminal for

MCC-1596 (CN02)

CN18

(Black)

erminal for

power relay

CN19

(Gray)

erminal for

MCC-1599 (CN02)

CN09

(Brown)

erminal for

grounding

CN23

(Red)

onnector for

MCC-1597 (CN500)

CN51

(Black)

onnector for

MCC-1597 (CN602)

– 48 –

CN50

(White)

onnector for

MCC-1599 (CN608)

7-2. Outline of Main Controls

1. PMV (Pulse Motor Valve) control

1) The aperture of the PMV (1, 2) is controlled between 88 (44 + 44) to 1000 (500 + 500) pulses during operation.

2) During cooling and heating operations, the PMV aperture is controlled by the temperature difference between a detected temperature from a TS sensor and a saturation temperature equivalent value (TU temperature) from a Ps sensor. (SH control).

3) The temperature difference in 2) in both cooling and heating operations is usually controlled using a 5K target value. (However control may be performed within a range of 1 – 15K depending on operating conditions).

4) When the cycle overheats during both cooling and heating operations, the PMV aperture is controlled using a detection value from a TD sensor.

The normal target value is 96°C for cooling operations and 102°C for heating operations.

CAUTION

Sensor malfunction may cause liquid back-flow or error overheating in the compressor resulting in dramatic reduction in the durable life of the compressor.

In the event of malfunction and repair of the compressor, restart operation after checking that there are no errors in the resistance values or the refrigerating cycle of each sensor.

2. Discharge temperature release control

1) This control lowers the revolution number of the compressor in the event that the discharge temperature is not reduced or in the event the discharge temperature increases rapidly during PMV control.

The cycle is stabilized by dividing compressor revolution n umber control into units up to 0.6 rps.

2) When the detected discharge temperature is in an error zone, compressor operation is stopped and then restarted after 2 minutes 30 seconds.

An error count is added on each occasion the error zone is detected and when the error is detected 4 times, a “P03” error is performed.

When normal operation continues for a period of 10 minutes, the error count is cleared.

TD (˚C)

115 113

105 102

([P03] is displayed with count 4 of errors)

Abnormal stop

Frequency normal down

Frequency slow down

Frequency hold

Frequency slow up (Until command)

According to command

– 49 –

3. Outdoor fan revolution number control

Control of fan revolution number and the fan taps in this unit are shown below.

Fan Taps Revolution number Allocation [rpm]

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

SM224

SM280

Upper Fan Lower Fan Upper Fan Lower Fan

250 280 280 310 340 400 460 520 580 640 710 760 830 860 920

0 0 250 270 300 350 410 470 530 590 640 710 770 810 850

250 280 280 340 400 460 520 580 640 710 760 830 860 920 940

0 0 250 300 350 410 470 530 590 640 710 770 810 850 920

3-1. Cooling fan control

1) Cooling operations of the outdoor fan are controlled by a TL sensor, TO sensor and the compressor revolution number. Control is performed per 1 tap of DC fan control.

The outdoor fan is controlled by every 1 tap of DC fan control (14 taps). During star tup, operation is fixed for 60 seconds to a maximum fan tap corresponding to the zones

shown in the table below. Thereafter fan tap is controlled by a temperature outputted from the TL sensor.

38°C ≤ TO 29°C ≤ TO < 38°C 15 ≤ TO < 29°C 5 ≤ TO < 15°C 0 ≤ TO < 5°C –5 ≤ TO < 0°C TO < –5°C TO error

Less than 45 rps

Min. Max.

W6 WE W5 WD W3 WA W2 W8 W1 W6 W1 W5 W1 W4 W1 WE

45 rps or more

and less than 60 rps

Min. Max.

W8 WF W7 WF W5 WC W4 WA W3 W8 W2 W7 W3 W5 W3 WF

60 rps or more Min. Max.

WA WF W9 WF W7 WE W6 WC W4 WA W3 W8 W3 W6 W3 WF

TL (˚C)

58 55

+1 tap / 20 sec.

Until Maximum rps

( )

in each zone

Revolution number HOLD

–1 tap / 20 sec.

Until Minimum rps

( )

in each zone

3-2 Heating fan control

1) Heating operations of the outdoor fan are controlled by a TE sensor, TO sensor and the compressor revolution n umber. (Control from a minimum W1 to a maximum is performed according to the table below).

2) Operation is fixed for 3 minutes after start up by a maximum fan tap corresponding to the zones in the table below. Thereafter fan control is performed using the temperature from the TE sensor.

3) When TE ≥ 24°C continues for 5 minutes, the compressor is stopped. The compressor is placed in the same state as a normal thermostat OFF without an error display.

The compressor is restarted after approximately 2 minutes 30 seconds and such interrupted operation does not constitute an error. When the operation in 3) above is frequently performed, the filter of the intake section of the indoor unit may require cleaning.

Maximum

Therefore restart operation after cleaning the filter.

10°C ≤ TO 5 ≤ TO < 10°C –3 ≤ TO < 5°C –10 ≤ TO < –3°C TO < –10°C TO error

Less than

45 rps

WA WC WF WF WF WF

45 rps or more

and less than 60 rps

WB WD WF WF WF WF

60 rps

or more

WC WF WF WF WF WF

TE (˚C)

–2 taps / 20 sec. Stop timer count

(Until W1)

–2 taps / 20 sec.

(Until W1)

–1 tap / 20 sec.

(Until W1)

Revolution number HOLD

+1 tap / 20 sec.

WF tap

– 50 –

4. Defrost control

A zone

B zone

C zone

D zone

1) During heating operations, defrost operations are performed when the temperature from the TE sensor satisfies any of the conditions in the A to D zones.

2) Dur ing defrosting operations, defrost will be ter minated if the temperature from the TE sensor continues at 12°C or higher for 3 seconds or if the temperature is 7°C ≤ TE < 12°C for 1 minute. Furthermore the defrost operation will be terminated if defrosting operations have continued for 10 minutes even if TE sensor temperature is less than 7°C.

3) After defrost operations have been reset, the compressor restarts heating operations without stopping.

Start warming operation

01015 39

TE [˚C]

–2

45 55 90 [min.]

–5 –10 –18

∗

C zone

A zone

B zone

D zone

∗ The minimum TE value during 10 and 15 minutes after starting heating operation is stored as TEO.

When To is normal When To is abnormal

A Zone B Zone C Zone D Zone

Status [(TEO-TE) – (ToO-To) ≥ 3°C] continues for 20 seconds Status [TEO- TE ≥ 3°C] continues for 20 seconds Status [(TEO-TE) – (ToO-To) ≥ 2°C] continues for 20 seconds Status [TEO-TE ≥ 2°C] continues for 20 seconds

Status [TE ≤ 23°C] continues for 20 seconds

When compressor operation status TE < 2°C is calculated for d minutes

4) The above time of d can be changed by selecting jumper [J805] or [J806]. (Setting at shipment; 90 minutes)

J805

¡ ¡

× ×

J806

150 minutes

90 minutes (Setting at shipment)

60 minutes 30 minutes

: Short-circuit, × : Open

5. Short interrupted operation preventive control

1) Even when a thermostat OFF signal is received from the indoor unit, the compressor may not stop during an 8 minute period after star tup in order to protect the compressor. This operation is not an error condition.

2) When operation is terminated by using a remote controller, operation will not continue.

6. Electrical current release control

An AC current detection value from T611 on the IPDU control board is used to suppress the revolution number of the compressor so that the input current of the inverter does not exceed a specified value.

A Zone D Zone B Zone

C Zone

l1 value (A)

Normal operation. Maintain frequency of current operation. Reduce operating frequency. Cease reduction of operating frequency

and maintain frequency of current operation.

SM224 Type

15.7

SM280 Type

17.6

– 51 –

l1–0.5

Current (A)

B zone

D zone C zone

A zone

7. Heat sink temperature detection control

1) IGBT overheating prevention is protective control performed by a thermistor (TH sensor) in proximity to IGBT.

2) When a temperature of TH ≥ 83°C is detected, the fan tap is moved by 1 step up. Thereafter step-up is performed at a rate of +1 tap/5 seconds until a maximum fan tap is reached.

3) After 2) above, operation is returned to normal fan control at a temperature of TH < 78°C.

4) Operation of the compressor is terminated at a temperature of TH ≥ 100°C.

5) Operation is restarted after 2 minutes and 30 seconds using [1] as the error count. However a count of [4] in the same operation confirms an error. The error display is “P07” (Restart will not be performed).

∗ When error is confirmed, this may be an error caused by heat build-up or blower fan failure in the outdoor

unit, or an error in the IPDU board.

8. Electrical current release value shift control

1) This control is for the purpose of preventing malfunction of the compressor or electronic components such as the IGBT of the inverter in the compressor drive system during cooling operations.

2) Select the current release control value (I1) by TO sensor value from the right table.

The correction is based on the table below:

Temp. range

50°C ≤ TO 47°C ≤ TO < 50°C 44°C ≤ TO < 47°C TO < 44°C TO error

SM224

9.0

11.0

14.0

15.7

9.0

SM280

9.0

11.0

14.0

17.6

9. Over-current protective control

1) Operation of the compressor is stopped when the over-current protective circuit detects an error current.

2) The compressor restarts after 2 minutes 30 seconds using [1] as an error count. After restart, the error count is cleared when operation continues for 6 minutes or more.

3) An error is confirmed when the error count takes a value of [8].

4) For the indicated contents of error, confirm using the check code table.

10. High-pressure switch/Compressor case thermostat control

1) When the high-pressure switch or the compressor case thermostat operates, the operation of the compressor is terminated.

2) The compressor restarts after 2 minutes 30 seconds using [1] as an error count. After restart, the error count is cleared when operation continues for 10 minutes or more.

3) An error is confirmed with the error count [10].

4) For the indicated contents of error, confirm using the check code table.

9.0

11. High-pressure release control

1) The operation frequency is controlled to restrain abnormal rising of high pressure by TL sensor in cooling operation and TC sensor in heating operation.

2) When TL sensor in cooling operation or TC sensor in heating operation detects abnormal temperature of the stop zone, stop the compressor and the error count becomes +1.

3) When the compressor stopped with 2), the operation restarts from the point of the normal operation zone (e point or lower) where it returned after 2 minutes 30 seconds.

4) The error count when the compressor stopped with 2) is cleared after the operation continued for 10 minutes. If the error count becomes [10] without clearing, the error is determined and reactivation is not performed.

5) For the error display contents, confirm on the check code list.

HEAT TC / COOL TL

[°C]

a b c d e

Frequency slow up (Up to command)

Abnormal stop

Frequency normal down

Frequency slow down

Frequency hold

As command is

a b c d e

HEAT COOL

TC TL

62°C63°C 57°C62°C 55°C60°C 53°C58°C 49°C54°C

– 52 –

12. SV2 valve control

The conditions for opening and closing the SV2 valve are shown in the table below.

Non-operation

During Cooling Operations

During Heating Operations

During Defrost Operation

SV2 Valve “Open” Conditions

(1) When operation stopped after operating (2) When power placed “ON”

When 30 second elapses after first startup

(3)

operation when power ON at TO ≤ 5° C

(4) When Ps ≤ 0.23 MPa

When 30 second elapses after first startup

(5)

operation when power ON at TC < 26°C (6) When Ps ≤ 0.14 MPa (7) When conditions for defrost satisfied.

(8) When conditions for defrost satisfied.

Defrost

start condition

66rps Compressor revolution number

36rps

4-way valve

ON OFF

When operation started after operating or when 30 minutes elapsed after opening SV2 under conditions (1) (2)

When 8 minutes elapsed after starting operation.

When Ps ≥ 0.27 MPa When 8 minutes elapsed after starting operation or when

TC ≥ 26°C When Ps ≥ 0.19 MPa When 4-way valve is OFF during defrost startup. When 2 minutes elapsed after four-way valve is ON after

defrost completion

Defrost

completion condition

Defrost operation

SV2 Valve “Close” Conditions

2 minutes

SV2

Open Close

13. Oil recovery control

1) This control enables periodic recovery of oil accumulating in the indoor unit or in the exchange pipe.

2) After continuous operation for 240 minutes, the lower limit for the compressor revolution number is raised for 2 minutes and oil is recovered.

Control Conditions

During Cooling

During Heating

Continuous cooling operation for 240 minutes

Continuous heating operation for 240 minutes

During startup of oil recovery control, the compressor revolution number dur ing operation is lower than the revolution number of the lower limit for control details.

Lower limit for compressor revolution number placed to 56 rps per 2 minutes

Lower limit for compressor revolution number placed to 70 rps per 2 minutes

When low

When high

The compressor rotation speed is raised to the lower limit during control.

Operate according to indoor commands without lowering the compressor rotation speed to the lower limit. (In this case, the timer counts 2 minutes.)

Control Details

4) When the DOWN zone and the HOLD zone (UP prohibition) are superimposed for example during current release control or discharge temperature release control, DOWN zone and the HOLD zone have priority over oil recovery control.

– 53 –

14. Coil heating control

1) This control has the function of heating the compressor by applying a current to the compressor when not operating instead using a case heater.

This control is for the purpose of preventing stagnation of the refrigerant inside the compressor.

2) Malfunction in the compressor may result if a current is not applied for a specified time before a test run after installation as was previously the case.

Similarly, starting operation after turning the power OFF and not operating for a long time also requires application of a current before starting operation, in the same manner as the test run.

3) Application of current is determined by TD and TO sensors. When the TO sensor is defective, a backup control is automatically performed by the TE sensor. When TO sensor is defective , make a determination using the LED display of the outdoor interface board.

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

(When TO sensor defective)

TO [˚C] TE [˚C]

Current application

conditions

TD < 30˚C

Intermittent current Continuous current

18 15 10

Corresponding to 100w Corresponding to 100w

No current

Intermittent current ON: 10 minutes OFF: 5 minutes

Continuous

current

Current application

conditions TD < 30˚C

20 18 12

Intermittent current ON: 10 minutes OFF: 5 minutes

(100W : Total power consumption of inverter and compressor)

NOTE

While heating and electrifying the winding wire, electrifying sound may generate. It is nor abnormal.

No current

Continuous

current

– 54 –

8. TROUBLESHOOTING

8-1. Summary of T roubleshooting

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) Confir mation 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 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 carried 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.

– 55 –

1. Before troubleshooting

1) Required tools/instruments

•+ and – screwdrivers, spanners, radio cutting pliers, nippers, etc.

• Tester, thermometer, pressure gauge, etc.

2) Confir mation 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?

• Is not automatic address being set up?

• Is not being carried out a test run by operation of the outdoor controller? 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.

Confirmation of lamp display

Trouble

1) Outline of judgment The primary judgment to check where a trouble occurred in indoor unit or outdoor unit is performed with

the following method.

→→

(When 4-way air discharge cassette type wireless remote controller is connected)

Method to judge the erroneous position by flashing indication on the display part of indoor unit (sensors of the receiving unit)

The indoor unit monitors 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.

Check defective position and parts.

– 56 –

8-2. Troubleshooting

8-2-1. 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)

Overflow was detected. Indoor DC fan error

 

Receiving unit



  

 

Miswiring or wire connection error



between receiving unit and indoor unit

 



Setup error

 

Protective device of indoor unit worked.

Operation

Timer Ready

Alternate flash

P03 P04 P05 P07 P15 P19 P20 P22 P26 P29

P31

Outdoor unit discharge temp. error Outdoor high pressure system error

Negative phase detection error Heat sink overheat error Outdoor unit error Gas leak detection error

4-way valve system error (Indoor or outdoor unit judged.) Outdoor unit high pressure protection

Outdoor unit: Outdoor unit error Outdoor unit: Inverter Idc operation ∗1 Outdoor unit: Position detection error

Stopped because of error of other indoor unit in a group (Check codes of E03/L03/L07/L08)



Protective device of



outdoor unit worked.



    

 

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.

– 57 –

Lamp indication

Operation

Alternate flash

Operation

Alternate flash

Operation

Timer Ready

Check code

F01 F02 P10 F04 F06 F07 F08 F12 F13 F15

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) error Temp. sensor (TL) error Temp. sensor (T O) error Sensor error of outdoor unit ∗1 Temp. sensor (TS) error Temp. sensor (TH) error Temp. Sensor miswiring (TE, TS)

    

        

Simultaneous flash

Operation

Timer Ready

Simultaneous flash

Operation

Timer Ready

Flash

Operation

Timer Ready

Simultaneous flash

F29

F31

H01 H02 H03 H04

H06

L03

L07

L08

L09

Indoor EEPROM error

Outdoor EEPROM error

Compressor break down Compressor lock



Outdoor compressor system error ∗1

 

Current detection circuit error } Power supply , outdoor P.C. board error Case thermostat worked. } PS pressure sensor error, Outdoor unit

low pressure protective operation low pressure system error

Duplicated master indoor units There is indoor unit of group connection → A UTO address

in individual indoor unit. Unsetting of group address

Compressor overheat, outdoor wiring error

  

   

* If group construction and



address are not normal Missed setting when power supply turned on, (Unset indoor capacity) automatically goes to address

setup mode.

Operation

Simultaneous flash

Timer Ready

L10 L20 L29 L30 L31

Unset model type (Service board) Duplicated indoor central addresses Outdoor unit and other error Outside interlock error Negative phase error

∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.

– 58 –

8-2-2. 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)

– 59 –

SET

ON / OFF

UNIT

LOUVER

8-2-3. Monitor Function of Remote Controller Switch

n Calling of sensor temperature display <Contents>

Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor mode from the remote controller.

1 Push

TEST

+ CL buttons simultaneously for 4 seconds to

call the service monitor mode.

The service monitor goes on, the master indoor unit No. is displayed at first and then the temperature of item code  is displayed.

2 Push temperature set

the item code of data to be monitored.

The item code list is shown below.

Item code

02 03

∗ 07

Indoor unit data

∗ F2

∗ F8

Room temperature (Remote controller)

Indoor suction temperature (TA) Indoor heat exchanger (Coil)

temperature (TCJ) Indoor heat exchanger (Coil)

temperature (TC) Indoor fan revolution frequency Indoor fan calculated operation time Filter sign time Indoor discharge temperature*1

Data name

TEMP.

buttons and then change

Unit

°C

°C °C

°C

rpm

×100h

×1h

°C

Item code

60 61 62 63 65

∗ 6D

∗ 70

Outdoor unit data

∗ 72 ∗ 73

TIMER SE

TER

RESE

WING/FI

241 3

1 2 3 4

Returned to usual display

Data name

Outdoor heat exchanger (Coil) temperature (TE) Outside temperature (TO) Compressor discharge temperature (TD) Compressor suction temperature (TS) Heat sink temperature (THS) Operation current (× 1/10) Outdoor heat exchanger (Coil) temperature (TL) Compressor operation frequency Outdoor fan revolution frequency (Lower) Outdoor fan revolution frequency (Upper) Compressor calculated operation time

MOD

Unit

°C °C °C °C °C

°C

rps rpm rpm

×100h

The item codes with ∗ marks in the above table are displayed only on the indoor units of 4 series models and after. (4 series indoor units mean RAV-SM1404UT-E for example.).

3 Push

UNIT LOUVER

button to select the indoor unit to be monitored.

Each data of the indoor unit and its outdoor units can be monitored.

4 Pushing

∗1 The indoor discharge temperature of item code [F8] is the estimated value from TC or TCJ sensor.

TEST

button returns the status to the usual display.

Use this value to check discharge temperature at test run. (A discharge temperature sensor is not provided to this model.)

• The data value of each item is not the real time, but value delayed by a fe w seconds to ten-odd seconds.

– 60 –

– 61 –

8-2-4. Check Code List (Outdoor)

Remote controller indication

F04 F06 F08

F07 F12 F13 F15

F31 H01 H02

H03 H04 H06

L10

L29 P03

P04 P05

P07 P15 P20 P22 P26 P29

E01 E02 E03

E04 E08

E09 E10 E18

L03

L07

L08

L09

L30 P19

Sensor lamp part

Block indication

Operation

Timer Ready Flash

¥¥¡ ¥¥¡ ¥¥¡

¥¥¡ ¥¥¡ ¥¥¡ ¥¥¡ ¥¥¡

l l

l l l

¥¡¥

¥ ¥ ¥

¥ ¥ ¥ ¥ ¥ ¥

¥ ¥ ¥ ¥ ¥

¥ ¥ ¥

l ll

ll ll

ll ll ll ll

¥¡¥ ¥

ALT

Outdoor unit Discharge temp. sensor (TD) error

ALT

Outdoor unit Temp. sensor (TE, T S , TL) error

ALT

Outdoor unit Outside temp. sensor (TO) error

ALT

Outdoor unit Temp. sensor (TL) error

ALT

Outdoor unit Temp. sensor (TS) error

ALT

Outdoor unit Temp. sensor (TH) error

ALT

Outdoor unit Misconnection of temp. sensor (TE, TS)

SIM

Outdoor unit EEPROM error Outdoor unit Compressor break down Outdoor unit Compressor lock

Outdoor unit Current detection circuit error Outdoor unit Case thermostat operation Outdoor unit low pressure system error

SIM

Outdoor unit Setting error of service P.C. board type

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

Power supply error

ALT

Outdoor unit Heat sink overheat

ALT

Gas leak detection

ALT

Outdoor unit High pressure system 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)

ALT

4-way valv e inverse error

: Go on, ¥ : Flash, l : Go off

ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED

Representative defective position

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.

² ² ²

Detection

Outdoor Outdoor Outdoor

Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor

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 Indoor

Outdoor

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. Open/Short of heat exchanger temp. sensor was detected. Open/Short of suction temp. sensor was detected. Open/Short of heat sink temp. sensor (Board installed) was detected. Misconnection of outdoor heat exchanger temp. sensor and suction temp. sensor was detected. Outdoor P.C. board part (EEPROM) error 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 Case thermostat operation was detected. Ps pressure sensor error, Low pressure protective oper ation When outdoor service P.C. board w as used, model type select jumper setting was inappropriate.

1) Defective parts on outdoor P.C. board (MCU communication, EEPR OM, TH sensor error)

2) When outdoor service P.C. board was 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 Power supply voltage error Abnormal overheat was detected by outdoor heat sink temp . sensor. Abnormal overheat of discharge temp. or suction temp. was detected. Error was detected by high release control from indoor/outdoor heat exchanger temp . sensor. 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

In heating operation, error was detected by temp. down of indoor heat exchanger or temp. up ofTE, TS.

Explanation of error contents

Automatic Operation

reset

continuation

×× ××

¡¡

×× ×× ×× ×× ××

×× ××

×× ×× ×× ××

×× ××

×× ×× ×× ×× ×× ××

—— ——

¡ × ¡ ×

××

¡ ×

×× ×× ×× ×× ××

¡ ×

: 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

– 62 –

Error mode detected by indoor unit

Operation of diagnostic function

Check

code

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

• Defective serial receiving circuit on

Duplicated indoor unit address

E08

Duplicated indoor master unit

L03

There is group wire in individual indoor

L07

unit. Unset indoor group address

L08

L09

Unset indoor capacity

Abnormal input of outside interlock

L30

Float switch operation

P10

• Float circuit, Disconnection,

P12

Indoor DC fan error

4-way valve system error

P19

• After heating operation has started,

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

Regular communication error between indoor aster and follower units and

E18

between main and sub units

Cause of operation

outdoor P.C. board

indoor P.C. board

Coming-off, Float switch contact error

indoor heat exchangers temp. is down.

driving MCU and main MCU

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

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. 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 f an 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.

– 63 –

Error mode detected by outdoor unit

The check code has been ramified from 4 series and after. The ramified check code is displa yed only when both the indoor unit and the outdoor unit are 4 series and after.

(Ex. Combination of RAV-SM1404UT-E with RAV-SM2804AT8-E)

When the indoor unit is 3 series and before, the conventional check code is displayed.

(Ex. Combination of RAV-SM1402CT-E and RAV-SM2804AT8-E: Outdoor unit only is 4 series.)

Operation of diagnostic function

Check code

Indoor unit

before after

3 series 4 series

F04 F04

F06

F07

F06

F12

F15

F08 F08

F13

F31

L10

L29

H01 H01

H02 H02

P07

P15

P19

Cause of operation

Disconnection, short of discharge temp. sensor (TD)

Disconnection, short of outdoor temp. sensor (TE)

Disconnection, short of outdoor temp. sensor (TL)

Disconnection, short of suction temp. sensor (TS)

Miss-mounting of outdoor temp. sensor (TE, TS)

Disconnection, short of outside temp. sensor (TO)

Disconnection, short of heat sink temp. sensor (TH)

Outdoor P.C. EEPROM error

Unset jumper of service P.C. board

Communication error between outdoor P.C. board MCU

Heat sink overheat error ∗ Heat sink temp. sensor detected

over specified temperature.

Detection of gas leak ∗ Discharge temp. sensor (TD),

Suction temp. sensor (TS) detected temperature over specified temp.

4-way val ve inverse error ∗ After heating operation has started,

indoor heat exchanger temp. lowers under the specified temp.

∗ After heating operation has started,

outdoor heat exchanger / suction temp. rises over the specified temp.

Compressor break down ∗ Although operation has started,

operation frequency decreases and operation stops.

Compressor lock * Over-current detection after

compressor start-up

Status of

air conditioner

Stop

Continue

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

Judgment and measures

1. Check discharge temp. sensor (TD).

2. Check outdoor P.C. board (MCC-1599).

1. Check temp. sensor (TE).

2. Check outdoor P.C. board (MCC-1599).

1. Check temp. sensor (TL).

2. Check outdoor P.C. board (MCC-1599).

1. Check suction temp. sensor (TS).

2. Check outdoor P.C. board (MCC-1599).

1. Check temp. sensor (TE, TS).

2. Check outdoor P.C. board (MCC-1599).

1. Check outside temp. sensor (TO).

2. Check outdoor P.C. board (MCC-1599).

1. Check outdoor P.C. board (MCC-1599). (Q201 is incorporated in TH sensor.)

1. Check outdoor P.C. board (MCC-1599).

1. Outdoor service P.C. board Check model type setting jumper wire.

1. Check outdoor P.C. board (MCC-1596, MCC-1597, MCC-1599).

2. Connection check between CN802 of MCC-1599 and CN504 of MCC-1597, and also connection check between CN505 of MCC-1597 and CN851 of MCC-1596.

1. Check screw tightening between PC. Board and heat sink and check radiator grease (MCC-1596).

2. Check heat sink blast path.

1. Check gas leak, recharge

2. Check full open of service valve.

3. Check PMV (Pulse Motor Valve).

4. Check broken pipe.

5. Check discharge temp. sensor (TD), suction temp. sensor (TS).

1. Check operation of 4-way valve.

2. Check outdoor heat exchanger (TE), suction temp. sensor (TS).

3. Check indoor heat exchanger sensor (TC).

4. Check 4-way valve coil.

5. Check PMV (Pulse Motor Valve).

1. Check power supply voltage. (AC342 to 457V)

2. Overload operation of refrigerating cycle

1. Trouble of compressor (Lock, etc.): Replace compressor.

2. Wiring error of compressor (Open phase)

– 64 –

Check code

Indoor unit

before after

3 series 4 series

H03

P05

F23

H06

P03 P03

H04

P04

P05

P20

P22 P22

P26 P26

P29 P29

Operation of diagnostic function

Cause of operation

Current detection circuit error

Open phase of 3-phase power supply

Ps sensor error

Low pressure protective operation

Discharge temp. error ∗ Discharge temp. (TD) over

specified value was detected.

Case thermostat operation ∗ Abnormal overheat of compressor

High pressure SW system error

Pow er supply voltage error

High pressure protective operation

• During cooling operation, outdoor temp. sensor (TL) detected temperature over specified temp.

• During heating operation, indoor temp. sensor (TC, TCJ) detected temperature over specified temp.

Outdoor fan system error

Short-circuit error of compressor driving element

Position detection circuit error

Status of

air conditioner

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

Judgment and measures

1. Check outdoor P.C. board (MCC-1596). (AC current detection circuit)

1. Check open phase of 3-phase power supply.

2. Black lead wire to be connected to CN03 of MCC-1596 does not pass through T611.

1. Check connection of Ps sensor connector.

2. Check failure of Ps sensor.

3. Check compressing power error of compressor.

4. Check 4-way valve error.

5. Check outdoor P.C. board error.

1. Check service valves are fully opened. (Gas side, Liquid side)

2. Check clogging of outdoor PMV. (PMV1, 2)

3. Check SV2 circuit.

4. Check Ps sensor error.

5. Check clogging of indoor filter.

6. Check clogging of refrigerant pipe.

7. Check of outdoor fan operation. (In heating mode)

8. Check short of refrigerant.

1. Check refrigerating cycle (Gas leak)

2. Trouble of electronic expansion valve

3. Check discharge temp. sensor (TD).

1. Check case thermostat and connector.

2. Check gas leak, recharge

3. Check full open of service valve.

4. Check PMV (Pulse Motor Valve).

5. Check broken pipe.

1. Check service valves are fully opened. (Gas side, Liquid side)

2. Check of outdoor fan operation.

3. Check motor error of outdoor fan.

4. Check clogging of outdoor PMV. (PMV1, 2)

5. Check clogging of heat exchanger in indoor/outdoor units.

6. Short-circuit status of suction/discharge air in outdoor unit.

7. Check outdoor P.C. board error.

8. Check fan system error (Cause of air volume drop) at indoor side.

9. Check PMV opening status in indoor unit.

1. Check power supply voltage. AC342 to 457V

1. Check outdoor heat exchanger sensor (TL).

2. Check indoor heat exchanger sensor (TC, TCJ).

3. Check full open of service valve.

4. Check indoor/outdoor fan.

5. Check PMV (Pulse Motor V alve).

6. Check clogging and short circuit of indoor/outdoor heat exchanger.

7. Overcharge of refrigerant. Recharge

1. Check lock of fan motor.

2. Check power supply voltage betw een L2 and N. 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 (MCC-1596).

2. When performing operation while taking-off compressor wire, an error does not occur. (Compressor rare short)

1. Check control P.C. board (MCC-1596).

– 65 –

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

L20

— ∗3

Central controller

(Send)

C05

(Receive)

C06

—

Central controller

P30

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)

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

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 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.

– 66 –

8-2-5. Diagnostic Procedure for Each Check Code (Outdoor Unit)

1) This section describes the diagnostic method for each check code displayed on the remote controller.

2) In some cases, a check code indicates multiple symptoms. In this case, confirm LED display on the outdoor P.C. board to narrow the contents to be confirmed.

3) The check code on the remote controller is displayed only when the same error occurred continuously by multiple times while LED of the outdoor P.C. board displays even an error which occurred once. Therefore the display on the remote controller may differ from that of LED.

LED display on outdoor P.C. boar d

Dip switch setup

• When turning on 1) only of SW803, the latest error is displayed. As the memory is stored, it can be confirmed even if the power supply is turned off once. (excluding outside temp. sensor (TO) error)

• When the work finished or the outdoor temp. sensor (TO) error was found, turn off all of SW803. (The error which occurs at present is displayed.)

Only 1) of SW803 is ON.

1234

All SW803 are OFF. (Initial status)

1234

Display selection

• When even a LED of D800 to D804 (Yellow) goes on, error occurrence is indicated. <Display 1>

• If pushing the button switch SW800 for 1 second under the above condition, the yellow LED is displayed with flashing. <Display 2>

• When pushing SW800 for 1 second again, the status returns to <Display 1>.

• The error contents can be confirmed by combining

<Display 1> and <Display 2>.

Check

code [E04]

Outdoor

LED display

—

(Item without special mention Indicates part of outdoor unit.)

[Indoor/Outdoor communication error]

Is setting of group address

of remote controller correct?

YES

Are inner wiring and

inter-unit cables (1, 2, 3) normal?

YES

(No error) (Error occurred) (Push SW800) D805 (Green) D804 (Yellow) D803 (Yellow) D802 (Yellow) D801 (Yellow) D800 (Yellow)

Check and troubleshooting

¡¡¡

l lll ll l l

(Example of discharge temp. sensor error)

: Go off, ¡ : Go on, ¥ : Flash

¡ ¡

Check Item code [14].

Correct wiring

and inter-unit cable.

l l

Are connection of CN01 of MCC-1599 and

wiring of terminal blocks (1, 2, 3) normal?

YES

Does D502 (Orange LED) flash after

power supply is turned on again?

YES

– 67 –

Check outdoor P.C. board (MCC-1599).

Correct wiring of connectors

and terminal blocks.

Check indoor P.C. board.

Defect → Replace

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[F04]

[F06]

¡¡ ¡

l ll l

¡ ¡

¡¡ ¡

l ll l

¡ ¥ ¡

[Discharge temp. sensor (TD) error]

Is CN603 connection normal?

Is resistance value of TD sensor normal?

YES

• There is a possibility that it is one of the following errors. Confirm LED on outdoor P.C. board to judge which error it is . Heat exchanger temp. sensor (TE) error, Heat exchanger temp. sensor (TL) error,

Suction temp. sensor (TS) error, Miswiring of heat e xchanger sensor (TE, TS)

Heat exchanger temp. sensor (TE) error]

Is CN601 connection normal?

Is resistance value of TE sensor normal?

YES

Check outdoor P.C. board (MCC-1599).

Correct connector.

Sensor error → Replace

Defect → Replace

Correct connector.

Sensor error → Replace

Defect → Replace

[F07]

¡¡ ¡

l ll l

¡ ¥ ¡ ¥

¡¡ ¡

l l

¡ ¡

¡¡ ¡

l l

¡ ¥ ¡ ¥

¡¡ ¡

l ll l

¡ ¥ ¡ ¥

[Heat exchanger temp. sensor (TL) error] → Refer to [F07] column.

[Suction temp. sensor (TS) error] → Refer to [F12] column.

[Miswiring of heat exchanger sensor (TE, TS)] → Refer to [F15] column.

[Heat exchanger temp. sensor (TL) error]

Is CN604 connection normal?

Is resistance value of TL sensor normal?

YES

Check outdoor P.C. board (MCC-1599).

Correct connector.

Sensor error → Replace

Defect → Replace

– 68 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[F08]

[F12]

[F13]

¡¡ ¡

¡ ¡

¡¡ ¡

l l

¡ ¡

¡¡ ¡

l l

¡ ¡ ¥

[Outside air temp. sensor (TO) error]

Is CN602 connection normal?

Is resistance value of TO sensor normal?

YES

[Suction temp. sensor (TS) error]

Is CN600 connection normal?

Is resistance value of TS sensor normal?

YES

[Heat sink temp. sensor (TH) error]

Check outdoor P.C. board (MCC-1599).

Defect → Replace

Check outdoor P.C. board (MCC-1599).

Correct connector.

Sensor error → Replace

Defect → Replace

Correct connector.

Sensor error → Replace

Defect → Replace

[F15]

¡¡ ¡

l l

¡ ¥ ¡ ¥

[Miswiring of heat exchanger sensor (TE, TS)]

Is mounting status of

TE and TS sensors normal?

YES

Is CN600 connection normal?

Is resistance value of TS sensor normal?

YES

Is CN601 connection normal?

Is resistance value of TE sensor normal?

YES

Check outdoor P.C. board (MCC-1599).

Correct sensor mounting.

Correct connector.

Sensor error → Replace

Correct connector.

Sensor error → Replace

Defect → Replace

– 69 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[F23]

¡¡ ¡ ¥

ll l

¡ ¥ ¡ ¥

[PS sensor error]

Is connector of

Ps sensor correctly connected?

YES

Are the output current characteristics

of Ps sensor normal?

YES

Does not refrigerant bypass

from discharge port to suction port

of 4-way valve?

YES

Connector: CN606, White

∗  Pressure by pressure gauge (Check joint)

If an error of the pressure sensor is considered.

Pressure display on LED display



Output power of I/F (CDB) P.C. board



and ,  and  are different,



and  are different, check I/F P.C. board.



Correct connection of connector.

Sensor error

Check compressor.

Check 4-way valve.

[F31] <Display 1> <Display 2>

¡¡ ¡ ¥

l l

¡ ¥ ¡ ¥

[H01] <Display 1> <Display 2>

¡¡ ¡

l ll

l ll l

[EEPROM error]

Check outdoor P.C. board (MCC-1599).

Defect → Replace

[Compressor break down]

Is power supply voltage normal?

AC342 to 457V

YES

Is wire connection normal?

Compressor lead

(Board side, Compressor side),

Reactor lead, Power supply lead

YES

Is it not abnormal overload?

YES

Correct power supply line.

Check wire connection

and correct it.

Correct and clear the cause.

– 70 –

Check outdoor P.C. board (MCC-1596).

Defect → Replace

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[H02]

[H03]

¡¡ ¡

l ll

¡¡ ¡

l ll

l l

¡¡ ¡

l ll

¡ ¥ ¡ ¡ ¥

[Compressor lock]

Is power supply voltage normal?

AC342 to 457V

YES

Is wire connection normal?

Compressor lead

(Board side, Compressor side),

Reactor lead, Power supply lead

YES

Is compressor normal?

Is there no refrigerant stagnation?

YES

Does PMV normally operate?

YES

[Current detection circuit error]

Check outdoor P.C. board (MCC-1596).

Defect → Replace

[Power supply error (Vdc)] → Refer to [P05] column.

YES

Check outdoor P.C. board (MCC-1596).

Correct power supply line.

Check wire connection

Check outdoor P.C. board.

Compressor lock → Replace

Check TE, TS sensors and PMV.

Defect → Replace

and correct it.

Defect → Replace

¡¡ ¡

l ll

¡ ¥

ll ll

[Case thermostat operation][H04]

Are CN609 connection

and case thermostat normal?

YES

Is cooling/heating operation available

when short-circuiting case thermostat?

YES

Is there no gas leak?

Is it not refrigerant shortage?

YES

Is valve fully opened?

YES

Is PMV normal?

YES

– 71 –

Check outdoor P.C. board (MCC-1599).

Correct connector.

Case thermostat error → Replace

Defect → Replace

Repair defectives position.

Recharge refrigerant.

Open valve fully.

Correct defective position.

Replace defective part.

Check crushed or broken pipe. Defect → Correct and Replace

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[H06]

¡¡ ¡

l ll

¡ ¥

Cooling

Does cooling

indoor fan normally operate?

YES

Is there clogging of indoor filter

or heat exchanger?

[Low pressure protective operation]

Are gas pipe, liquid pipe

and service valve of the

outdoor unit fully opened?

YES

Are the pressure

sensor characteristics of

low pressure normal?

YES

Is SV2 circuit normal?

YES

Isn’t any indoor unit

which has different refrigerant

system connected?

In cooling season, go to A .

In heating season, go to B .

NO NO

YES

Cleaning

∗  Pressure by pressure gauge (Check joint)

 Pressure indication by LED  Output power of I/F (CDB) P.C. board If an error of the pressure sensor is considered. If

Check miss-wiring, wrong installation and connection of connector.

(Using miss-wiring check function of the outdoor unit, check them.)

and ,  and  are different,



and  are different, check P.C. board.



YES

Are parts related to the

indoor fan motor normal?

1. Connection of connector

2. Capacitor

3. Motor 4. Fan YES

Open the service valve fully.

Replace low pressure sensor.

Correct SV2 circuit.

Correct wiring to regular wiring.

Repair the

defective position.

Check indoor P.C. board

Defective → Replace

[L10]

Refrigerant shortage, clogging

or pipe breakage is considered.

B Heating

Does heating outdoor fan

normally operate?

YES

Is there clogging of

outdoor heat exchanger?

Is outdoor PMV normal?

YES

¡¡ ¡

¡ ¥

YES

Check outdoor P.C. board

Shortage of

YES

Cleaning

Are connection of connectors

and coils normal?

YES

Is blocking found in entire valve?

Is indoor fan

system normal?

· Fan breakage

· Fan coming-off

YES

refrigerant/blocking/pipe breakage

[Unset model type]: Only when service P.C. board is used

Cut jumper line according

to the explanation sheet packaged

with the service P.C. board.

Repair the

defective position.

Replace PMV with new one.

Repair the

defective position.

Defective → Replace

– 72 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[L29]

¡¡ ¡ ¥

¡ ¥ ¡

¡¡ ¡

l l

¥ ¥

¡ ¥

¡¡ ¡ ¥

l l

¥ ¥

¡ ¥ ¡ ¥

¡¡ ¡

¡ ¥

¡¡ ¡

¡ ¥ ¡ ¥ ¡ ¥

¡¡ ¡

¡ ¥ ¡ ¥ ¡ ¥

¡¡ ¡ ¥

¡ ¡ ¥ ¡ ¥

∗ There is a possibility that it is one of the following errors .

Confirm LED on outdoor P.C. board to judge which error it is . Communication error between MCU, Heat sing temp. sensor (TH) error,

EEPROM error, Unset model type , Heat sink overheat error, Gas leak detection, 4-way valve inverse error

[Communication error between MCU]

1. Connection check between CN802 of MCC-1599 and CN504 of MCC-1597 and also connection check between CN505 of MCC-1597 and CN851 of MCC-1596.

2. Check outdoor P.C. board (MCC-1596, MCC-1597, MCC-1599). Defect → Replace

[Heat sink temp. sensor (TH) error] → Refer to [F13] column.

[EEPROM error] → Refer to [F31] column.

[Unset model type] → Refer to [L10] column.

[Heat sink overheat error] → Refer to [P07] column.

[Gas leak detection] → Refer to [P15] column.

[4-way valve inverse error] → Refer to [P19] column.

– 73 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[P03]

[P04]

[Discharge temp. error]

¡¡ ¡

Is refrigerant charge amount adequate?

Is there no gas leak?

YES

¡ ¥ ¡ ¥

Is resistance value of TD sensor normal?

∗ There is a possibility that it is one of the following errors .

Confirm LED on outdoor P.C. board to judge which error it is . (1) high-pressure SW system error, (2) power supply error (Vdc), (3) high-pressure protective operation, (4) case thermo operation.

¡¡ ¡

¡ ¥ ¡ ¡

l l

[High pressure SW system error]

Power supply error (Vdc), High pressure protective operation, Case thermostat operation.

Doesn’t high pressure switch

high pressure switch normal?

Is service valve fully opened?

Is PMV normal?

YES

Is it not abnormal overload?

Is CN603 connection normal?

YES

operate?

YES Are parts of

YES

Check outdoor P.C. board (MCC-1599).

Is circuit wiring normal?

Parts check

Defective → Replace

Open service valve fully.

Repair defective position.

Recharge refrigerant.

Repair defective position.

Replace defective part.

Correct and clear the cause.

Correct connector.

Sensor error → Replace

Defect → Replace

Wiring check,

Correct.

YES

Reset the power supply and

then do a trial operation according

to the season.

B Cooling operation.

Does cooling outdoor fan

normally operate?

YES YES

Is there any element

which blocks heat exchanger

of the outdoor unit?

Clogging of heat exchanger



Short circuit



B ← Cooling operation C ← Heating operation

Is there no fan breakage

or coming-off?

YES

Check Comp. IPDU PC board

Defective → Replace

Repair defective position.

Connection of connectors,

Fan IPDU, Fan motor, Wiring.

Elimination of

blocking element

Overcharge of refrigerant/

Clogging/Pipe breakage/

Abnormal overload

– 74 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[P04]

Heating operation

Does the heating indoor fan

normally operate?

YES

Is there any element which

blocks indoor heat exchanger?

Filter clogging



Clogging of heat exchanger



Short circuit



Clogging by refrigerant

overcharge/Pipe breakage/

Abnormal overload

Check indoor P.C. board

Defective → Replace

NO NO

YES

blocking element

Are connections of

connectors,capacitors

and fan motor normal?

YES

Elimination of

Are characteristics

of TC and TCJ sensor

resistance value normal?

YES

defective position.

Replace

TC or TCJ sensor.

Repair

¡¡ ¡

¡ ¥

ll ll

¡¡ ¡

¡ ¥ ¡

¡ ¥

¡¡ ¡ ¥

¡ ¥ ¡ ¡

l l

[Case thermostat operation] → Refer to [H04] column.

[Power supply error (Vdc)] → Refer to [P05] column.

[High pressure protective operation] → Refer to [P20] column.

– 75 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[P05]

¡¡ ¡

¡ ¥ ¡

¡ ¥

[P07] <Display 1> <Display 2>

¡¡ ¡

¡ ¥ ¡ ¥ ¡ ¥

[Power supply error (Voltage error)]

Is there no open phase

of the power supply?

Is there no down or up

of power supply voltage?

(AC342 to 457V)

YES

[Heat sink overheat error]

Is there no loosening of

screws of motor drive element of outdoor P.C. board (MCC-1596) Q201? Did not forget to apply radiation grease

to rear side of Q201?

Is not the ventilation flue

of the heat sink blocked?

Is not the fan blocked?

(Short-circuit, etc.)

YES

Correct wiring.

Confirm electric construction, etc.

Check outdoor P.C. board (MCC-1600).

YES

Check outdoor P.C. board (MCC-1596).

Defect → Replace

Apply radiation grease

to objective part.

Retightening of screws.

Remove blocking matter.

Correct short-circuit.

Defect → Replace

[P15]

¡¡ ¡

¡ ¥ ¡ ¥ ¡ ¥

[P19] <Display 1> <Display 2>

¡¡ ¡ ¥

¡ ¡ ¥ ¡ ¥

[Gas leak detection]

Is refrigerant charge amount adequate?

Is there no gas leak?

YES

Is PMV normal?

YES

Is valve fully opened?

YES

Is there no crushed pipe?

Check temp. sensor.

TD sensor CN603, TS sensor CN600

[4-way valve inverse error]

Is operation of

4-way valve normal?

(Check pipe temp., etc. in

cooling/heating operation.)

Is power supplied

to 4-way valve coil?

YES

Check operation of

outdoor I/F (CDB) P.C. board.

YES

Error

Check outdoor P.C. board (MCC-1599).

YES

Error

Repair defective position.

Recharge refrigerant.

Correct defective position.

Replace defective part.

Open valve fully.

Correct and replace piping.

Correct connector.

Sensor error → Replace

Defect → Replace

Temperature sensor check

TE sensor CN601 TS sensor CN600

Indoor TC sensor

Defect → Correct and repair

Replace coil of 4-way valve.

Check outdoor P.C. board.

Defect → replace

Check 4-way valve.

Defect → Replace

– 76 –

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[P20]

¡¡ ¡ ¥

¡ ¥ ¡ ¡

l l

[High pressure protective operation]

Is valve fully opened?

YES

Reset the power supply

and then perform test run

matching to the season.

Heating season Heating operation

Is there no problem

on outdoor TL sensor?

(Measurement of resistance value)

YES

Is there no crack or

loosening of outdoor fan?

YES

Does not the outdoor fan

perform abnormal operation?

YES

Open valve fully.

Cooling season Cooling operation

Replace sensor.

Check outdoor fan.

Defect → Replace, retightening

Check the same items as

[P22] error.

which interfere heat exchange

• Clogging of heat exchanger

• Short circuit

Check overcharge of refrigerant, clogging of cycle, broken pipe, abnormal overload, etc. Defect → Correct defective position.

Does indoor fan

normally operate?

YES

Is there no element which

interfere heat exchange of indoor unit?

• Clogging of filter

• Clogging of heat exchanger

• Short circuit

Is there no element

of outdoor unit?

Are indoor fan motor

and connector normal?

YES

Are resistance values of indoor TC and TCJ

sensors normal?

YES

Eliminate interfering element.

Repair defective position.

Check indoor P.C. board.

Defect → Replace

Eliminate interfering element.

Replace

sensor.

– 77 –

Check overcharge of refrigerant, clogging of cycle, broken pipe, abnormal overload, etc. Defect → Correct defective position.

Check

code

Outdoor

LED display

(Item without special mention Indicates part of outdoor unit.)

Check and troubleshooting

[P22]

¡¡ ¡ ¥

¡ ¥ ¡ ¥ ¡

[Fan system error]

Is there no problem on power supply voltage?

Does the fan rotate without trouble when rotating

shaft of fan motor with hands during power-OFF?

Is there no problem on coil resistance of fan motor?

Between red and white lead wire : 12 to 20Ω Between white and black lead wire : 12 to 20Ω Between black and red lead wire : 12 to 20Ω

Single operation check for outdoor fan

1) Set SW804 of Dip switch as the following figure and then push SW801 for approx. 1 second to check single operation of outdoor fan. Use this method to check which fan, upper or lower fan, has a trouble.

• When pushing SW801 for 1 second again or 2 minutes passed, the fan stops .

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

(342 to 457V)

YES

Replace fan motor.

Check wiring construction.

Ask repair of power supply.

YES

Check outdoor P.C. board (MCC-1597).

Defect → Replace

Outdoor fan single operation

SW804 SW801

[P26]

[P29]

—

No code

¡¡ ¡ ¥

¡ ¥ ¡

¡¡ ¡ ¥

¡ ¥ ¡

¡ ¥

¡¡ ¡ ¥

¡ ¥ ¡ ¥

1234

[Short-circuit of compressor drive element]

Is there no problem on connection

of compressor lead or reactor?

(Check referring to Wiring diagram.)

YES

The same error does not occur in

operation without compressor lead.

YES

[Position detection circuit error]

Check outdoor P.C. board (MCC-1596).

[Other error] Compressor disorder due to sudden change of load, etc. ∗ Although the display of outdoor LED outputs, the unit automatically restarts

and error is not determined.

∗ LED display also may output due to negative phase of compressor or wire

coming-off.

Defect → Replace

Check compressor. (Rear short, etc.)

Correct wiring.

Replace outdoor P.C. board.

Defect → Replace

Push

– 78 –

Temperature sensor Temperature – Resistance value c haracteristic 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 v alue) (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

T A, TC, TCJ, TE, TS, T O sensors

Resistance value (k

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 v alue) (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

3.5

Resistance value (k

ΩΩ

Ω)

ΩΩ

Low pressure sensor

Resistance (kΩ)

200

150

100

2.0

Output voltage (V)

0.5

10 20 30 40 50 60 70 80 90 100 0.49 0.98

Temperature (˚C)

TD, TL sensors

Pressure (MPa)

Pressure sensor I/O wire

connecting table

Pin No.

Input/output name

1 2 3 4

—

OUTPUT

GND

DC5V

Lead wire

—

White Black

Red

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.

– 79 –

9. SETUP AT LOCAL SITE AND OTHERS

9-1. Calling of Error History

The error contents in the past can be called.

SET

1 Push

TEST

buttons simultaneously for

4 seconds or more to call the service check mode.

Service Check goes on, the CODE No. 01 is displayed, and then the content of the latest alarm is displayed. The number and error contents of the indoor unit in which an error occurred are displayed.

2 In order to monitor another error history, push the set

temperature history No. (CODE No.).

CODE No.  (Latest) → CODE No. " (Old) NOTE : 4 error histories are stored in memory.

3 Pushing

TEST

REQUIREMENT

Do not push CL button, otherwise all the error histories of the indoor unit are deleted.

9-2. Group Control Operation

/ buttons to change the error

button returns the display to usual display.

TEMP.

FILTER

TEST

RESET

231

1 2 3

Returned to usual display

TIMER SET

TIME

SET

ON / OFF

FAN

MODE

SAVE

SWING/FIX

VENT

UNIT LOUVER

In a group control, operation of maximum 8 indoor units can be controlled by a remote controller. The indoor unit connected with outdoor unit (Individual/Master of twin) controls room temperature according to setting on the remote controller.

OUT

1-1

Remote controller

OUT

Master 2-1

OUT

3-1

OUT

4-1

OUT

7-1 Max. 8 units

1. Display range on remote controller The setup range (Operation mode/Air volume select/Setup temp) of the indoor unit which was set to the master unit is reflected on the remote controller.

2. Address setup Turn on power of the indoor unit to be controlled in a g roup within 3 minutes after setting of automatic address. If power of the indoor unit is not turned on within 3 minutes (completion of automatic address setting), the system is rebooted and the automatic address setting will be judged again.

1) Connect 3 In/Out cables surely.

2) Check line address/indoor address/group address of the unit one by one.

3) The unit No. (line/indoor gout address) which have been set once keep the present status as a rule if the

unit No. is not duplicated with one of another unit.

– 80 –

n Indoor unit power-ON sequence

Power ON

Gr construction check

System start

Not normal NO

Normal ∗ Gr normal

1) There is no duplicated indoor unit address.

2) There is no invalid indoor unit address.

3) Individual unit and master/follower units are not intermingled.

4) Only a unit for individual.

5) A master indoor unit and 1 or more follower indoor units for Gr.

• The unit without power feed waits entirely → Waiting status is released by system start

• Reboot when power is fed on the way

3 minutes elapse

YES

Automatic address starts.

(Approx. 1 minute up to finish)

Outdoor model distinction (10 seconds) (Indoor unit) Twin Master/follower distinction (Indoor unit) Gr construction, louver information (Remote controller)

Remote controller operation is available.

(Approx. 50 seconds after power-ON)

• Power supply/Indoor/Outdoor serial and Gr wiring: OK

• Powers of all indoor units are turned on within 3 minutes.

• Reception time for remote controller operation (After power supply was turned on)

1) When address is OK : Approx. 50 seconds

2) In AUTO address : Approx. 4 to 5 minutes

Regular communication between indoor units (Every 30 seconds) (Master/Follower) Regular communication on the identical pipe (every 30 seconds) (Twin Master/Follower)

(When the above status changes, immediately communicates.)

(Repetition)

• In a group operation, if the indoor unit which was fed power after judgment of automatic address cannot receive regular communication from the master unit and regular communication on identical pipe within 120 seconds after power was turned on, it reboots (system reset).

→ The operation starts from judgment of automatic address (Gr construction check) again.

(If the address of the master unit was determined in the previous time, the power fed to the master unit and reboot works, the master unit may change though the indoor unit line address is not changed.)

– 81 –

9-3. Outdoor Unit

9-3-1. Various Setting on Outdoor Unit (Existing piping, Power save, Cooling-only, etc.)

The following settings are available by DIP switch setup and jumper line setup.

Function

Existing piping setup

Power save setup

Snow-proof fan control

Defrost time change

Max. frequency change

Set position

SW802

1234

Existing piping setup Power save setup Snow-proof fan control

∗ all are OFF at shipment.

J805, J806

J807

Control contents

Turn the switch to ON when Ø19.1 is used for the existing pipe. In this case, the heating capacity may lower according to outside

temp. and indoor temp. in heating operation. Turn the switch to ON when using the po w er sa ve function.

The control to lower the compressor frequency (Approx. –10%) is performed by indoor heat exchanger temp. in heating operation.

When snow enters from clearance of the fan guard or heat exchanger into blast path and it is accumulated, the control to prevent generation of motor lock is validated.

When outside temp. is below 0°C though the compressor stops, the outdoor fan operates with W5.

The defrost interval is cut to shorten it than the standard status. For contents of control and cutting method, refer to Section

7-4. Defr ost contr ol . When it is needed to lower the maximum value of the compressor

frequency, cut the jumper line. Max. frequency at cooling/heating is lowered.

In this case the Max. capacity decreases .

Max. frequency of compressor

Model

Standard status

When J807 is cut

RAV-SM224 RAV-SM280

COOL HEAT COOL HEAT

78.0 74.4 91.2 96.0

66.6 66.6 76.8 76.8

Cooling-only setup

J808

When using the air conditioner as a cooling-only conditioner, cut the jumper line. (An air conditioner can be changed to cooling-only conditioner by “0F” of DN code on the remote controller.)

– 82 –

9-3-2. Service Support Function (LED Display, Switch Operation)

1. Outline

A various setup and operation check can be performed by DIP switches at 3 positions (SW802, SW803, SW804) and the pushdown button switches (SW800, SW801) at 2 positions.

Operation part

Part No.

SW800 SW803 SW801 SW804 SW802

Display part

Part No.

D502

D503

D800 to D804

D805

Specifications

Pushdown button switch

DIP switch

Pushdown button switch

DIP switch DIP switch

Specifications

Orange LED

Green LED

Yellow LED

Green LED

Operation contents

Exchanges the displayed contents of LED (D800 to D804) on the outdoor control P.C. board.

Performs the specific operation to check maintenance.

Performs various initial settings. (Ref er to 9-3-1.)

Operation contents

Indoor/Outdoor communication (Serial communication) signal display (Receive signal from indoor signal)

Indoor/Outdoor communication (Serial communication) signal display (Send signal from outdoor signal)

Error display

When all SW803 are OFF, or when any of D800 to D804 goes on, LED displays that the outdoor controller detects an error.

When status of SW803 is other than OFF, various indications are displayed.

Po wer-ON display

When the power of the outdoor unit is turned on, LED goes on. When SW801 and SW804 operate the specific operation, LED flashes.

∗ All LED are colorless when it goes off.

1234

SW804 SW805

1234

SW802 SW803

SW800 SW801 SW806

LED

D805 D804 D803 D802 D801 D800

D502 D503

Enlarged view of

LEDs

D805 D804 D803 D802 D801 D800

– 83 –

9-3-3. Others

1. Selection of LED display (SW800, SW803 operation)

1) Display selection list

The displayed contents of LED D800 to D804 on the outdoor control P.C. board can be exchanged by operation of SW803.

SW803

234

Switch Function / Contents

SW803

234

Error display (Error generating at present)

Error generating at present is displayed. This switch goes off when an error does not generate.

Error display (The latest error: Latest error including present)

After error status was cleared, the error which generated before

SW803

can be confirmed by this setting. (Reconfirmation is available even if power supply was turned off once.)

• If an error generates at present, the same contents as those of

234

error which is generating at present are displayed.

• Only error of TO sensor is not displayed by this setting. (Confirm it by setting of error which is generating at present.)

Temperature sensor display

The detected value of temperature sensor is displayed.

SW803

234

SW803

234

SW803

234

SW803

234

TCJ

SW803

Refer

Refer to

234

SW803

234

SW803

2341

SW803

234

SW803

234

Current display

The current value which flows in the outdoor unit is displayed.

Compressor operation frequency display

The operation frequency of the compressor is displayed.

PMV opening display

The opening of PMV (Pulse Motor Valve) is displayed.

Ps sensor display

Detected Ps sensor is displayed.

Refer to

– 84 –

2) Error display

The error which is generating at present and the latest error (Latest error information including present) can be confirmed by lighting LED D800 toD804 on the outdoor control P.C. board.

a) When all DIP switch SW803 are OFF, the status of error which is generating at present is displayed. b) <1> only of DIP switch SW803 is turned on, the error which generated before

(Latest error information including present) is displayed.a) c) If there is an error, any of LED D800 to D804 goes on. (Display 1) d) When pushing the pushdown button switch SW800 for approx. 1 second, the display is exchanged.

(Display 2) e) When pushing SW800 again or after 2 minutes, the status returns to that of Display .

(Legend)

Present error

SW803

2341

Latest error

SW803

2341

D800 D801 D802 D803 D804 D805

(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)

: Go off, ¡ : Go on, ¥ : Flash

Display 1)

(Initial display)

lllll

¡¡

ll¡l

¡¡l¡¡

¡¡

¡¡¡l¡¡

Display 2)

(SW800 operation)

ll ll

¡ ¡ ¡ ¡ ¡

lllll ll¥ll

¥¥

¥¥¥

lll¥l

¥¥l¡

¥l¥¥l¡ ¥¥¥¥l¡ ¥¥¥l¥¡ ¥¥¥¥¥¡ ¥

llll

l¥lll

¥¥

lll

ll¥ll

¡ ¡ ¡ ¡

l¥¥ll¡

¥¥

¡ ¥l¥¥¥¡ ¥¥¥¥¥¡ ¥¥

lll

ll¥ll

¥l¥ ¥¥¥

ll ll

¡ ¥¥¥¥l¡ ¥¥

ll¥l

¥¥l¥¡

l l¥l

¥¥¡

¥¡

¥l¥¥¥¡

Error contents

Normal Discharge temp. sensor (TD) error Heat exchanger temp. sensor (TE) error Heat exchanger temp. sensor (TL) error Outside temp. sensor (TO) error Suction temp. sensor (TS) error Heat sink temp. sensor (TH) error Heat exchanger sensor (TE, TS) miswiring Ps sensor error EEPROM error Compressor break down Compressor lock Current detection circuit error Case thermostat operation Low pressure protective operation Model unset Communication error between MCU Other error (Compressor disorder, etc.) Discharge temp. error High pressure SW system error Power supply error Heat sink overheat error Gas leak detection 4-way valve reverse error High pressure protective operation Fan system error Driving element short-circuit Position detection circuit erro

Wired remote controller

Error code

— F04 F06

F06, F07

F08

F06, F12 F13, L29 F06, F15

F23, H06

F31, L29

H01 H02 H03

H04, P04

H06

L10, L29

L29

Error is not determined.

P03

P04 P04, P05 P07, L29 P15, L29 P19, L29 P04, P20

P22

P26

P29

∗ As the error code displayed on the wired remote controller may differ according to type of indoor model, multiple

codes are described.

– 85 –

3) Sensor, current, compressor operation frequency, PMV opening display

The values detected by the controller, such as temperature sensor or current value are simply confirmed.

(Legend)

D800 D801 D802 D803 D804 D805

(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)

Item

setup

LED display

lllll

llll

l¡lll

¡¡

lll

ll¡ll

¡l¡

¡¡

¡¡¡

lll¡l

ll¡l

l¡l¡l

¡¡l¡l¡

¡¡l¡

¡l¡¡l¡

¡¡¡l¡

¡¡¡¡l¡

llll

lll

l¡ll

¡¡

ll¡l

¡l¡l¡¡

¡¡l¡¡

¡¡¡l¡¡

lll

l¡l

¡¡l¡¡¡

¡¡¡¡

¡l¡¡¡¡

¡¡¡¡¡

¡¡¡¡¡¡

∗ As TD, TL and TH are sensors for high temperature, there is error at normal temperature or below position. ∗ For current value, the current for the outdoor unit only is displayed.

¡ ¡ ¡ ¡ ¡ ¡

¡ ¡ ¡

¡¡ ¡¡ ¡¡ ¡¡ ¡¡

¡¡¡ ¡¡¡ ¡¡¡

Temperature sensor (°C)

SW803

234

SW803

234

SW803

234

Sensor error, unconnected

SW803

234

SW803

2341

SW803

234

Below –25 –25 to –21 –20 to –16 –15 to –11 –10 to – 5

–5 to –1

0 to 4

5 to 9 10 to 14 15 to 19 20 to 24 25 to 29 30 to 34 35 to 39 40 to 44 45 to 49 50 to 54 55 to 59 60 to 64 65 to 69 70 to 74 75 to 79 80 to 84 85 to 89 90 to 94 95 to 99

100 to 104 105 to 109 110 to 114 115 to 119

Over 120

SW803

234

SW803

2341

TCJ

SW803

234

: Go off, ¡ : Go on

Current

(A)

SW803 SW803 SW803 SW803

234

0 to 0.9 1 to 1.9 2 to 2.9 3 to 3.9 4 to 4.9 5 to 5.9 6 to 6.9 7 to 7.9 8 to 8.9

9 to 9.9 10 to 10.9 11 to 11.9 12 to 12.9 13 to 13.9 14 to 14.9 15 to 15.9 16 to 16.9 17 to 17.9 18 to 18.9 19 to 19.9 20 to 20.9 21 to 21.9 22 to 22.9 23 to 23.9 24 to 24.9 25 to 25.9 26 to 26.9 27 to 27.9 28 to 28.9 29 to 29.9 30 to 30.9

Over 31

Compressor

operation

frequency

(rpm)

234

0 to 4

5 to 9 10 to 14 15 to 19 20 to 24 25 to 29 30 to 34 35 to 39 40 to 44 45 to 49 50 to 54 55 to 59 60 to 64 65 to 69 70 to 74 75 to 79 80 to 84 85 to 89 80 to 84 95 to 99

100 to 104 105 to 109 110 to 114 115 to 119 120 to 124 125 to 129 130 to 134 135 to 139 140 to 144 145 to 149 150 to 154

Over 155

PMV

opening

(Pulse)

234

0 to 19 20 to 39 40 to 59 60 to 79

80 to 99 100 to 119 120 to 139 140 to 159 160 to 179 180 to 199 200 to 219 220 to 239 240 to 259 260 to 279 280 to 299 300 to 319 320 to 339 340 to 359 360 to 379 380 to 399 400 to 419 420 to 439 440 to 459 460 to 479 480 to 499

500

— — — — — —

Pressure

(kg/cm²G)

29 or more

2341

–2 –1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

– 86 –

4) Specific operation for maintenance check (SW801, SW804)

The following specific operations for the maintenance check are performed by operation of SW801 or SW804.

a) Select DIP switch SW804. (See table belo w) b) Push the pushdown button switch SW801 for approx. 1 second. c) The following functions start. While each function starts, LED D805 (Green) flashes. d) When pushing the pushdown button switch SW801 again for approx. 1 second, when selecting DIP

switch SW804 or when the specified time of each function elapsed, each function stops and LED D805 (Green) returns to the continuous lighting.

SW804 Operation when pushdown button switch SW801 is pushed

SW804

234

Refrigerant recovery operation

The outdoor unit performs cooling operation. The indoor unit does not work by this operation alone. Therefore operate the fan beforehand.

Indoor cooling test run demand

The cooling test run is performed. (→ Note 1)

Indoor heating test run demand

The heating test run is performed. (→ Note 1)

Fan motor forced operation

Drive the fan motor forcedly. When pushing SW801 again or when 2 minutes elapsed,

the operation returns to the normal control.

PMV full open operation

Open PMV (Pulse Motor Valve) fully. When pushing SW801 again or when 2 minutes elapsed,

the operation returns to the normal control.

PMV full close operation

Close PMV (Pulse Motor Valve) fully. When pushing SW801 again or when 2 minutes elapsed,

the operation returns to the normal control.

[NOTE]

Although these operations can be performed even during operation, basically perform operation while the unit stops.

If performing this operation during driving the unit, it is dangerous because the pressure may change suddenly.

SW804

PMV middle opening operation

Set PMV (Pulse Motor Valve) to middle opening. When pushing SW801 again or when 2 minutes elapsed,

2341

the operation returns to the normal control.

Note 1) Indoor cooling test run demand / Indoor heating test run demand

Only when combining with the following indoor unit, cooling/heating operation can be performed from the outdoor unit.

Test r un is available: Indoor unit of 4 series and after (RAV-SM

∗∗∗

4UT-E etc.)

Test r un is unavailable: Indoor units other than the above-mentioned indoor units, or indoor units other than above-mentioned indoor units are included in the twin, triple, double twin connection.

Note 2) The forced test run by this setting cannot be cleared on the indoor remote controller.

Be sure to clear the test run by operation of the outdoor unit. (Push SW801 again for 1 second.)

– 87 –

SW804 Operation when pushdown button switch SW801 is pushed

SW804

234

4-way valve relay operation (For RY700, CN70 check)

Turn on 4-way valve power relay (RY700). When pushing SW801 again or when 2 minutes elapsed,

the operation returns to the normal control.

SV valve relay operation (For RY702, CN702 check)

Turn on SV valve relay (RY702). When pushing SW801 again or when 2 minutes

elapsed, the operation returns to the normal control.

[CAUTION]

Although these operations can be performed even during operation, basically perform

Heater output relay operation (For check RY703, CN703 check)

Turn on relay for option heater (RY703). When pushing SW801 again or when 2 minutes

operation while the unit stops. If performing this operation

during driving the unit, it is dangerous because the pressure may change suddenly.

elapsed, the operation returns to the normal control.

Outside output relay operation (RY704, CN704)

Turn on relay for outside output (RY704). When pushing SW801 again or when 2 minutes

elapsed, the operation returns to the normal control.

Forced start command

The indoor unit connected to the system is forcedly started. (The indoor unit starts operation by setting of the operation mode on the remote controller.)

SW804

234

2341

Forced stop command

The indoor unit connected to the system is forcedly stopped.

Relay operation change for outside output

[CAUTION]

Do not use this setting.

– 88 –

10. ADDRESS SETUP

10-1. Address Setup Procedure

When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address setup completes with power-ON of the outdoor unit. The operation of the remote controller is not accepted while automatic address works. (Approx. 4 to 5 minutes)

Setup of line address of outdoor unit, indoor unit address, and group address

Completion of cabling work

Do you arbitrarily set the

indoor unit address?

YES

Connect one remote controller with one indoor unit (1 : 1) tentatively with communication cable.

Turn on power of outdoor unit.

Set to all indoor units one by one.

(MANUAL)

Is group control performed?

YES

Do you change setting after

automatic setting at the first time?

YES

Turn on power of outdoor unit.

After completion of address setup, change is to arbitral

( )

address/group manually.

(To AUTO address mode)

Setup of automatic address finishes within

( )

4 to 5 minutes.

Is refrigerant line 1 line?

Turn on power of outdoor unit.

YES

END

• When the following addresses are not stored in the neutral memory (IC503) on the indoor P.C. board, a test run operation cannot be performed. (Unfixed data at shipment from factory)

Line address

Indoor unit address

Group address

Item code

Data at shipment

0099

Setup data range

0001 (No. 1 unit) to 0064 (No. 64 unit) 0001 (No. 1 unit) to 0064 (No. 64 unit)

Max. value of indoor units in the identical refrigerant line 0000 : Individual (Indoor units which are not controlled in a group)

0001 : Master unit (1 indoor unit in group control) 0002 : Sub unit (Indoor units other than master unit in group control)

– 89 –

10-2. Address Setup & Group Control

Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64) Group address : 0 = Single (Not group control)

1 = Master unit in group control 2 = Sub unit in group control

Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/from

the remote controllers and sub indoor units. (* It has no relation with an indoor unit which communicates serially with the outdoor units.)

The operation mode and setup temperature range are display ed on the remote controller LCD. (Except air direction adjustment of louver)

Sub unit (= 2) : Indoor units other than master unit in group operation

Basically, sub units do not send/receive signals to/from the remote controllers. (Except errors and response to demand of service data)

Header unit (Representative unit) (Master Twin)

: This unit communicates with the indoor unit (follower) which serial-communicates with the

outdoor units and sends/receives signal (Command from compressor) to/from the outdoor units as the representative of the cycle control in the indoor units of the identical line address within the minimum unit which configures one of the refrigerating cycles of Twin.

Follow er unit (Subordinate unit) (Sub Twin)

: Indoor units excluding the header unit in Twin

This unit communicates with (Header) indoor unit in the identical line address and performs control synchronized with (Header) indoor unit.

This unit does not perform the signal send/receive operation with the outdoor units. : No judgment for serial signal error.

10-2-1. System Configuration

1. Single

Outdoor

Indoor (Master/Header)

Remote controller

3. Single group operation

2-1

Sub/Header

1-1

Individual

1-1

Sub/Header

4-1

Master/Header

2. Twin

Sub/Header

Master/Header

3-1

1-1

1-2

Sub/Follower

8-1

Sub/Header

– 90 –

10-2-2. Automatic Address Example from Unset Address (No miswiring)

1. Standard (One outdoor unit)

1) Single

1-1

Individual

(Master/Sub)

2) Group operation (Twin, Triple operation) (Multiple outdoor units = Miltiple indoor units only with serial communication)

2-1

Sub/Header

1-1

Sub/Header

1-2

Sub/Follower

3-1

Master/Header

3-2

Sub/Follower

Only turning on source power supply (Automatic completion)

3-3

Sub/Follower

• Header unit: The header unit receives the indoor unit data (thermo status) of the follower

(Without identical line address & indoor/outdoor serial) and then finally controls the outdoor compressor matching with its own thermo status.

The header unit sends this command information to the follower unit.

• Follower unit: The follower unit receives the indoor unit data from the header

(With identical line address & indoor/outdoor serial) and then performs the thermo operation synchronized with the header unit.

The follower unit sends own thermo ON/OFF demand to the header unit.

(Example)

No. 1-1 header unit sends/receives signal to/from No. 1-2 and No. 1-3 f ollower units. (It is not influenced by the line 2 or 3 address indoor unit.)

– 91 –

10-2-3. Automatic Address Example from Unset Address (No miswiring)

1. Standard (One outdoor unit)

1) Single 2) Twin 3) Triple

(1-1) (1-2)

1-2

Sub/Header

Master/Follower

1-1

Individual

(Master/Header)

(1-1)

1-2

Master/Header

(1-2)

1-1

Sub/Follower

Only turning on source power supply (Automatic completion)

2. Group operation (Multiple outdoor units = Multiple indoor units with serial communication only, without twin)

2-1

Sub/Header

1-1

Sub/Header

3-1

Master/Header

8-1

Sub/Header

1-3

(Max. : 8 units)

(1-3)

1-1

Sub/Follower

Only turning on source power supply (Automatic completion)

3. Multiple groups operation

Single Twin Triple

2-1

Sub/Header

2-1

Sub/Header

1-1

1-1 1-2 3-1 3-2 3-3

2-3

Master/Follower

3-1

Sub/Header

3-3

Sub/Follower

1-2

Sub/Follower

Change is necessary

Manually change addresses of the multiple follower units simultaneously from the remote controller.

– 92 –

10-3. Remote Controller Wiring

• Strip off approx. 9 mm the wire to be connected.

• For single system, use non polarity, 2 core wire is

used for wiring of the remote controller . (0.5 mm² to 2.0 mm² wires)

• For the synchronous twin, triple system, use

2-conre shield wire (Vinyl cord for microphone 0.5 to 2.0 mm²) to conform to the EMC standard.

Wiring diagram

Terminal block for remote controller wiring of indoor unit

A B

Remote controller wire (Procured locally)

∗ For details of wiring/installation of the remote

controller, refer to the Installation Manual enclosed with the remote controller .

Terminal block

Remote controller

unit

Simultaneous twin system

Remote controller Remote controller

wiring

A B

Indoor side

Indoor/Outdoor connecting wires

Outdoor side

223

L1 L2

380-415 V 3N~, 50Hz

380 V 3N~, 60Hz

Remote controller inter-unit wiring

Indoor side

Indoor power inter-unit wiring

A B

1 2 3

Simultaneous triple and double twin system

Remote controller

Remote controller wiring

Indoor side Indoor/Outdoor

connecting wires Outdoor side

A B

11223

L1 L2

380-415 V 3N~, 50Hz

380 V 3N~, 60Hz

Remote controller inter-unit wiring

A B

1 2 3

Indoor power inter-unit wiring

Remote controller inter-unit wiring

Indoor side

Indoor power inter-unit wiring

A B

1 2 3

Triple

Double twin

∗ Use 2-core shield wire (MVVS 0.5 to 2.0 mm² or more) for the remote controller wiring in the simultaneous

twin, simultaneous triple and simultaneous double twin systems to prevent noise problems. Be sure to connect both ends of the shield wire to earth leads.

∗ Connect earth wires for each indoor unit in the simultaneous twin, simultaneous triple and simultaneous

double twin systems.

Remote controller inter-unit wiring

Indoor sideIndoor side

Indoor power inter-unit wiring

A B

1 2 3

– 93 –

10-4. Address Setup (Manual setting from remote controller)

In case that addresses of the indoor units will be determined prior to piping work after cabling w ork

• Set an indoor unit per a remote controller.

• Turn on power supply.

Line address → 1

Indoor unit address → 1

Group address → 1

1 Push

SET

+ CL +

TEST

buttons simultaneously

for 4 seconds or more.

←←

2 (

← Line address)

←←

Using the temperature setup

12 to the CODE No.

set

/ buttons,

3 Using timer time / buttons, set the line address. 4 Push

SET

button. (OK when display goes on.)

(Example of 2-lines cabling) (Real line: Cabling, Broken line: Refrigerant pipe)

Outdoor

1 23

1 2 3

Indoor

A B

Remote controller

For the above example, perform setting by connecting singly the wired remote controller without remote controller inter-unit cable.

Group address Individual : 0000 Master unit : 0001 Sub unit : 0002

1 2 3

Indoor

A B

1 2 2

Outdoor

1 2 3

Indoor

A B

2 1 2

In case of group control

1 2 3

Indoor

A B

2 2 2

←←

5 (

← Indoor unit address)

←←

Using the temperature setup

/ buttons, set 13 to the CODE No.

6 Using timer time / buttons, set 1 to the line address. 7 Push 8 (

SET

button. (OK when display goes on.)

←←

← Group address)

←←

Using the temperature setup

/ buttons, set 14 to the CODE No.

9 Using timer time / buttons, set 0000 to Individual, 0001 to Master unit, and 0002 to sub unit. 10 Push 11 Push

SET

button. (OK when display goes on.)

TEST

button.

Setup completes. (The status returns to the usual stop status.)

2, 5, 8

END

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

3, 6, 9 4, 7, 10

1 2 3 4 5 6 7 8 9 10 11

– 94 –

END

1 2

END

Operation

SET

TIME

TIMER SET

TEST

FILTER RESET

TEMP.

FAN

SAVE

SWING/FIX

VENT

MODE

ON / OFF

UNIT LOUVER

1 2 3

END

SET

TIME

TIMER SET

TEST

FILTER RESET

TEMP.

FAN

SAVE

SWING/FIX

VENT

MODE

ON / OFF

UNIT LOUVER

10-5. Confirmation of Indoor Unit No. Position

1. To know the indoor unit addresses though position of the indoor unit body is recognized

• In case of individual operation (Wired remote controller : indoor unit = 1 : 1)

(Follow to the procedure during operation)

1 Push 2 Push

Unit No. 1-1 is displayed on LCD. (It disappears after seve ral seconds.) The displayed unit No. indicate line address and

indoor unit address. (When other indoor units are connected to the

identical remote controller (Group control unit), other unit numbers are also display ed every pushing

UNIT LOUVER

ON / OFF

UNIT LOUVER

button.

button if the unit stops.

button.

2. To know the position of indoor unit body by address

• To confirm the unit No. in the group control

(Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.)

The indoor unit numbers in the group control are successively displayed, and fan, louver, and drain pump of the corresponding indoor unit are turned on. (Follow to the procedure during operation)

1 Push

VENT

and

TEST

buttons simultaneously for

4 seconds or more.

• Unit No. is displayed.

• Fans and louvers of all the indoor units in the group control operate.

2 Every pushing

UNIT LOUVER

button, the unit numbers

in the group control are successivel y displayed.

• The unit No. displayed at the first time indicates the master unit address.

• Fan and louver of the selected indoor unit only operate.

3 Push

TEST

button to finish the procedure.

All the indoor units in the group control stop.

– 95 –

Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units of the operating air conditioning system regularly to secure effective operation of the air conditioner.

It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time.

Check periodically signs of rust or scratches, etc. on coating of the outdoor units. Repair the defective position or apply the rust resisting paint if necessary.

If an indoor unit operates for approx. 8 hours or more per da y, usually it is necessary to clean the indoor/outdoor units once three months at least.

These cleaning and maintenance should be carried out by a qualified dealer . Although the customer has to pay the charge f or the maintenance, the life of the unit can be prolonged. Failure to clean the indoor/outdoor units regularly will cause shortage of capacity, freezing, water leakage or

trouble on the compressor.

Part name

Heat exchanger Fan motor

Filter

Fan

Suction/ Discharge grille

Drain pan

Face panel, Louver

External appearance

Object

Indoor Outdoor

¡¡ ¡¡

—

¡¡

—

Contents of check

• Blocking with dust, damage check

• Audibility for sound

• Visual check for dirt and breakage

• Visual check for swing and balance

• Check adhesion of dust and external appearance.

• Visual check for dirt and scratch

• Check blocking by dust and dirt of drain water.

• Check dirt and scratch.

• Check rust and pealing of insulator

• Check pealing and floating of coating film

Contents of maintenance

• Clean it when blocking is found.

• When abnormal sound is heard

• Clean with water if dirty

• Replace if any breakage

• Replace fan when swinging or balance is remarkably poor.

• If a large dust adheres, clean it with brush or water.

• Repair or replace it if deformation or damage is found.

• Clean drain pan, Inclination check

• Cleaning/Coating with repair painting

• Coating with repair painting

– 96 –

2 EN

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1 ACCESSORY PARTS

 Accessory Parts

INFORMATION

• The main pipe on the gas side of this outdoor unit has a diameter of Ø28.6 mm, but a Ø19.1 mm flare connection is used where the valve is connected. Be sure to use the Ø19.1 mm pipe and joint provided as accessories for the pipe connection.

• Before installing the unit, check that the unit has the correct model name to prevent the wrong unit from being installed in the wrong place.

• Before proceeding to weld the refrigerant pipe, be sure to pass nitrogen through the pipe.

• Before installing the indoor units, read the instructions in the installation manual provided with the indoor units.

• Before installing a branch pipe, read the instructions in the installation manual provided with the branch pipe kit.

• In the case of a simultaneous double twin system, use indoor unit with the same capacity for all four indoor units.

• P.C. board settings are required for some of the indoor units if they are to be used in a twin, triple or double twin system. Refer to the instructions in the installation manual of the branch pipe kit, and ensure that the settings are selected correctly.

• Combination with the indoor units Combination with the indoor units is possible only when units with the same type are combined. Combinations of units with different types cannot be used.

Part name Q’ty Shape Usage

Installation manual 1 (Hand this directly to the customer.)

Drain nipple 1

Waterproof rubber cap 1

Protective bush 1 For protecting wires (pipe cover)

Guard material for passage part 1 For protecting passage part (pipe cover)

Clamp filter 1

For conforming to EMC standards (Used for power wire)

Ø19.1 mm pipe 1 For the pipe inside the outdoor unit

Joint (Ø19.1 – Ø25.4 mm) 1 For connecting the pipe

Joint (Ø25.4 – Ø28.6 mm) 1 For connecting the pipe

Elbow 1 For connecting the pipe

Branch pipe kit Combination indoor unit

RAV-SM2244 RBC-DTWP101E SM56 u 4 units RAV-SM2804 RBC-DTWP101E SM80 u 4 units

Digital Inverter

Please read this Installation Manual carefully before installing the Air Conditioner.

• This Manual describes the installation method of the outdoor unit.

– 97 –

• For installation of the indoor unit, follow the Installation Manual attached to the indoor unit.

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

This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc (∗1) at the interface point between the user’s supply and the public system.

It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc (∗1).

Ssc (∗1)

Model

RAV-SM2244AT8(Z)(ZG)-E RAV-SM2804AT8(Z)(ZG)-E

ADOPTION OF NEW REFRIGERANT

Ssc (MVA)

1.41

1.72

Contents

1 ACCESSORY PARTS .................................................................................................. 2

2 SAFETY PRECAUTIONS ............................................................................................ 3

11. INSTALLATION MANUAL

3 INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER ................................ 4

4 INSTALLATION CONDITIONS .................................................................................... 6

5 REFRIGERANT PIPING ............................................................................................ 10

6 AIR PURGING ........................................................................................................... 14

7 ELECTRICAL WORK ................................................................................................ 17

8 EARTHING ................................................................................................................ 19

9 FINISHING ................................................................................................................. 20

10 TEST R UN ................................................................................................................. 20

11 ANNUAL MAINTENANCE......................................................................................... 20

12 AIR CONDITIONER OPERATING CONDITIONS ..................................................... 20

13 FUNCTIONS TO BE IMPLEMENTED LOCALLY ...................................................... 21

14 TROUBLESHOOTING............................................................................................... 22

15 APPENDIX................................................................................................................. 24

EN 1

4 EN

Digital Inverter

• Install the refrigerant pipe securely during the installation work before operating the air conditioner.

If the compressor is operated with the valve open and without the refrigerant pipe, the compressor sucks air and the refrigeration cycle is overpressurized, which may cause a burst or injury.

• When carrying out the pump-down work, shut down the compressor before disconnecting the refrigerant pipe.

Disconnecting the refrigerant pipe with the service valve left open and with the compressor still operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in rupturing, injury, etc.

CAUTION

• Do not climb onto or place objects on top of the outdoor unit.

You may fall or the objects may fall off of the outdoor unit and result in injury.

• Wear heavy gloves during the installation work to avoid injury. To Disconnect the Appliance from the Main Power Supply

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

• A 25 A installation fuse (all fuse types can be used) must be used for the power supply line of this conditioner.

INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER

CAUTION

New Refrigerant Air Conditioner Installation

• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER.

R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the working pressure of R410A refrigerant is approx. 1.6 times as that of refrigerant R22. Accompanied with the adoption of the new refrigerant, the refrigerant oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerant oil does not enter the new type refrigerant R410A air conditioner cycle. To prevent mixing of refrigerant or refrigerant oil, the sizes of connecting sections of charging port on main unit and installation tools are different from those of the conventional refrigerant units. Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does not enter.

Digital Inverter

SAFETY PRECAUTIONS

– 98 –

• Ensure that all Local, National and International regulations are satisfied.

• Read these “SAFETY PRECAUTIONS” carefully before installation.

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

• After the installation work, perform a trial operation to check for any problem. Follow the Owner’s Manual to explain to the customer how to use and maintain the unit.

• Ask the customer to keep the Installation Manual together with the Owner’s Manual.

WARNING

• Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner. Perform installation work properly according to the Installation Manual.

Inappropriate installation may result in water leakage, electric shock or fire.

• Be sure to connect earth wire (grounding work).

Incomplete grounding cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

• Turn off the main power supply switch or breaker before attempting any electrical work and maintenance.

Make sure all power switches are off. Failure to do so may cause electric shock. Use an exclusive power circuit for the air conditioner. Use the rated voltage.

• Connect the connecting wire correctly.

If the connecting wire is incorrect, electric parts may be damaged.

• When moving the air conditioner for installation to another place, be very careful not to allow the specified refrigerant (R410A) to become mixed with any other gaseous body into the refrigeration cycle.

If air or any other gas mixes with the refrigerant, the gas pressure in the refrigeration cycle will become abnormally high and it may result in the pipe bursting or personal injuries.

• Do not modify this unit by removing any of the safety guards or by by-passing any of the safety interlock switches.

• Do not touch the intake or aluminum fins of the outdoor unit.

Doing so may result in injury.

• Tighten the flare nut with a torque wrench in the specified manner.

Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

• Install the air conditioner securely in a location where the base can sustain the weight of the unit adequately.

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

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

• If refrigerant gas has leaked during the installation work, ventilate the room immediately.

If the leaked refrigerant gas comes in contact with fire, noxious gas may be generated.

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

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

• Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make sure the air conditioner uses an exclusive power supply.

An insufficient power supply capacity or inappropriate installation may cause fire.

• Use only the specified wiring during the unit installation. Ensure that all terminals are securely fixed, so preventing any external forces having a negative effect on the terminals.

• When the air conditioner cannot cool or heat a room well, contact the dealer from whom you purchased the air conditioner as refrigerant leakage is considered as the cause. In the case of repair that requires refill of refrigerant, ask service personnel about details of the repair.

The refrigerant used in the air conditioner is harmless. Generally, the refrigerant does not leak. However, if the refrigerant leaks in a room and a heater or stove burner in the room catches fire, it may generate toxic gas. When you ask service personnel for repairing refrigerant leakage, confirm that the leakage portion has been completely repaired.

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

Inappropriate grounding may cause electric shock.

• Do not install the air conditioner in a location that may be subjected to a risk of exposure to a combustible gas.

If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.

EN 3

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6 EN

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INSTALLATION CONDITIONS

 Before installation

Be sure to prepare to the following items before installation.

Length of refrigerant pipe

* Do not connect a refrigerant pipe that is shorter than

7.5 m. This may cause a malfunction of the compressor or other devices.

Airtight test

1. Before starting an airtight test, further tighten the spindle valves on the gas and liquid sides.

2. Pressurize the pipe with ni trogen gas charged from the service port to the design pressure (4.15 MPa) to conduct an airtight test.

3. After the airtight test is completed, evacuate the nitrogen gas.

Air purge

• To purge air, use a vacuum pump.

• Do not use refrigerant charged in the outdoor unit to purge air. (The air purge refrigerant is not contained in the outdoor unit.)

Electrical wiring

• Be sure to fix the power wires and indoor/outdoor connecting wires with clamps so that they do not come into contact with the cabinet, etc.

Earthing

WARNING

Make sure that proper earthing is provided.

Improper earthing may cause an electric shock. For details on how to check earthing, contact the dealer who installed the air conditioner or a professional installation company.

• Proper earthing can prevent charging of electricity on the outdoor unit surface due to the presence of a high frequency in the frequency converter (inverter) of the outdoor unit, as well as prevent electric shock. If the outdoor unit is not properly earthed, you may be exposed to an electric shock.

• Be sure to connect the earth wire (grounding work).

Incomplete grounding can cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

Test Run

Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor during startup.

CAUTION

Incorrect installation work may result in a malfunction or complaints from customers.

Length of refrigerant pipe

connected to indoor/

outdoor unit

Item

7.5 to 30 m

Addition of refrigerant is unnecessary at the local site.

*31 to 70 m

If the total length of the refrigerant pipe exceeds 30 m, add refrigerant in the amount given in the “Adding additional refrigerant”.

– 99 –

 Required Tools/Equipment and Precautions for Use

Prepare the tools and equipment listed in the following table before starting the installation work. Newly prepared tools and equipment must be used exclusively.

Legend

: Prepared newly (Use for R410A only. Do not use for refrigerant R22 or R407C etc.) : Conventional tools/equipment are available

Tools/equipment Use How to use tools/equipment

Gauge manifold Charging hose

Charging cylinder Can not be used

Gas leak detector Gas leak check Vacuum pump Vacuum drying Unusable

Vacuum pump with backflow prevention function

Flare tool Flare machining of pipe s Bender Bending pipes Refrigerant recovery equipment Refrigerant recovery Torque wrench Tightening flare nuts Pipe cutter Cutting pipes

Welding machine and nitrogen cylinder

Refrigerant charging measure Charging refrigerant

 Refrigerant Piping

New refrigerant (R410A)

When using the conventional piping

• When using the conventional piping with no indication of applicable refrigerant types, be sure to use it with a wall thickness of 0.8 mm for Ø6.4 mm, Ø9.5 mm, and Ø12.7 mm, with a wall thickness of 1.0 mm for Ø15.9 mm, with a wall thickness of

1.2 mm for Ø19.1 mm, and with a wall thickness of 1.0 mm for Ø28.6 mm (half hard). Do not use the conventional piping with a wall thickness less than these thicknesses due to insufficient pressure capacity.

When using general copper pipes

• Use general copper pipes with a wall thickness of 0.8 mm for Ø6.4 mm, Ø9.5 mm, and Ø12.7 mm, with a wall thickness of

1.0 mm for Ø15.9 mm, with a wall thickness of 1.2 mm for Ø19.1 mm, and with a wall thickness of 1.0 mm for Ø28.6 mm (half hard). Do not use any copper pipes with a wall thickness less than these thicknesses.

Flare nuts and flare machining

• The flare nuts and flare machining are different from those for the conventional refrigerant. Use the flare nuts supplied with the air conditioner or those for R410A.

• Before performing flare machining, carefully read “REFRIGERANT PIPING”.

Vacuuming/charging refrigerant and operation check

Vacuum drying

Welding pipes

Prepared newly for R410A only Prepared newly for R410A only

Unusable (Use the refrigerant charging measure instead.)

Prepared newly

R22 (Conventional tools)

Usable if dimensions are adjusted. R22 (Conventional tools) For R410A only Exclusive for Ø12.7 mm and Ø19.1 mm R22 (Conventional tools)

R22 (Conventional tools)

EN 5

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8 EN

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 Necessary Space for Installation

(Unit: mm)

Obstacle at rear side

Upper side is free

1. Single unit installation

2. Obstacles on both right and left sides

3. Serial installation of two or more units

Obstacle also above unit

Obstacle in front

Above unit is free

1. Single unit installation

2. Serial installation of two or more units

Obstacle also at the above unit

Obstacles in both front and rear of unit

Open above and to the right and left of the unit. The height of an obstacle in both the front and rear of the unit, should be lower than the height of the outdoor unit.

Standard installation

1. Single unit installation

2. Serial installation of two or more units

150 or

200 or

150 or

250 or

The height of the obstacle should be lower than the height of the outdoor unit.

150 or more

250 or

The height of the obstacle should be lower than the height of the outdoor unit.

200 or more

150 or

500 or

1,000 or

800 or

1,000 or

150 or

1,000 or

200 or

1,000 or

250 or

200 or

 Installation Location

WARNING

Install the outdoor unit properly in a location that is durable enough to support the weight of the outdoor unit.

Insufficient durability may cause the outdoor unit to fall, which may result in injury. This outdoor unit has a weight of about 135 kg. Pay special attention when installing the unit onto a wall surface.

CAUTION

Do not install the outdoor unit in a location that is subject to combustible gas leaks.

– 100 –

Accumulation of combustible gas around the outdoor unit may cause a fire.

Install the outdoor unit in a location that meets the following conditions after the customer’s consent is obtained.

• A well-ventilated location free from obstacles near the air inlets and air outlet

• A location that is not exposed to rain or direct sunlight

• A location that does not increase the operating noise or vibration of the outdoor unit

• A location that does not produce any drainage problems from discharged water

Do not install the outdoor unit in the follow ing location s.

• A location with a saline atmosphere (coastal area) or one that is full of sulfide gas (hot-spring area) (Special maintenance is required.)

• A location subject to oil, vapor, oily smoke, or corrosive gases

• A location in which organic solvent is used

• A location where high-frequency equipment (including inverter equipment, private power generator, medical equipment, and communication equipment) is used (Installation in such a location may cause malfunction of the air conditioner, abnormal control or problems due to noise from such equipment.)

• A location in which the discharged air of the outdoor unit blows against the window of a neighboring house

• A location where the operating noise of the outdoor unit is transmitted

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

• A location in which drain water poses any problems.

CAUTION

1. Install the outdoor unit in a location where the discharge air is not blocked.

2. When an outdoor unit is installed in a location th at is always exposed to strong winds like a coast or on the high stories of a building, secure normal fan operation by using a duct or wind shield.

3. When installing the outdoor unit in a locati on that is constantly exposed to strong winds such as on the upper stairs or rooftop of a building, apply the windproofing measures referred to in the following examples.

1) Install the unit so that its discharge port faces the

wall of the building. Keep a distance 500 mm or more between the unit and wall surface.

2) Consider the wind direction during the operational

season of the air conditioner, and install the unit so that the discharge port is set at a right angle relative to the wind direction.

• When using an air conditioner under low outside

temperature conditions (Outside temp:-5 °C or lower) in COOL mode, prepare a duct or wind shield so that it is not affected by the wind.

Strong wind

500 mm

Strong wind

Wind shield

EN 7

Wind shield

Toshiba RAV-SM2804AT8ZG-E, RAV-SM2804AT7ZG, RAV-SM2804AT8-E, RAV-SM2804AT7Z, RAV-SM2244AT8Z-E User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual