Toshiba RAV-SP420UT-UL, RAV-SP360CT-UL, RAV-SP300CT-UL, RAV-SP180CT-UL, RAV-SP240UT-UL User Manual

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SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

INDOOR UNIT

FILE NO. A09-009

4-Way Air Discharge Cassette Type

RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL

Under Ceiling Type

RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL

High Wall Type

RAV-SP180KRT-UL, RAV-SP240KRT-UL

R410A

PRINTED IN JAPAN, Nov., 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 ...................................................................................... 9

1-1. 4-Way Air Discharge Cassette Type ................................................................................ 9

1-2. Under Ceiling Type ......................................................................................................... 10

1-3. High Wall Type ................................................................................................................. 11

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)....................................... 12

2-1. 4-Way Air Discharge Cassette Type .............................................................................. 12

2-2. Under Ceiling Type ......................................................................................................... 15

2-3. High Wall Type ................................................................................................................. 18

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM .............................. 20

3-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type ........................................... 20

3-2. High Wall Type ................................................................................................................. 21

4. WIRING DIAGRAM ................................................................................... 22

4-1. 4-Way Air Discharge Cassette Type .............................................................................. 22

4-2. Under Ceiling Type ......................................................................................................... 23

4-3. High Wall Type ................................................................................................................. 24

5. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 25

5-1. 4-Way Air Discharge Cassette Type .............................................................................. 25

5-2. Under Ceiling Type ......................................................................................................... 25

5-3. High Wall Type ................................................................................................................. 26

6. REFRIGERANT R410A ............................................................................ 27

6-1. Safety During Installation/Servicing ............................................................................. 27

6-2. Refrigerant Piping Installation .................................................................................... 27

6-3. Tools ................................................................................................................................ 31

6-4. Recharging of Refrigerant ............................................................................................. 31

6-5. Brazing of Pipes ............................................................................................................. 32

– 2 –

7. INDOOR CONTROL CIRCUIT.................................................................. 34

7-1. Indoor Controller Block Diagram

(4-Way Air Discharge Cassette Type / Under Ceiling Type) ........................................ 34

7-2. Indoor Controller Block Diagram (High Wall Type) ...................................................... 37

7-3. Control Specifications

(4-Way Air Discharge Cassette Type / Under Ceiling Type) ........................................ 39

7-4. Control Specifications (High Wall Type) ....................................................................... 52

7-5. Indoor Print Circuit Board (4-Way Air Discharge Cassette Type) .............................. 63

7-6. Indoor Print Circuit Board (Under Ceiling Type) .......................................................... 65

7-7. Indoor Print Circuit Board (High Wall Type) ................................................................. 67

8. TROUBLESHOOTING .............................................................................. 69

8-1. Summary of Troubleshooting ........................................................................................69

8-2. Troubleshooting

(4-Way Air Discharge Cassette Type / Under Ceiling Type) ........................................ 71

8-3. Troubleshooting (High Wall Type) ................................................................................. 89

9. REPLACEMENT OF SERVICE P.C. BOARD .......................................... 105

9-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type ......................................... 105

9-2. High Wall Type ............................................................................................................... 110

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

10-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type ......................................... 116

10-2. High Wall Type ............................................................................................................... 131

11. ADDRESS SETUP .................................................................................. 139

11-1. Address Setup Procedure ........................................................................................... 139

11-2. Address Setup & Group Control ................................................................................. 140

11-3. Remote Controller Wiring ............................................................................................ 142

11-4. Address Setup (Manual setting from remote controller) .......................................... 143

11-5. Confirmation of Indoor Unit No. Position................................................................... 144

12. DETACHMENTS ..................................................................................... 147

12-1. 4-Way Air Discharge Cassette Type ........................................................................... 147

12-2. Under Ceiling Type ...................................................................................................... 158

12-3. High Wall Type ............................................................................................................... 169

13. EXPLODED VIEWS AND PARTS LIST .................................................. 176

13-1. 4-Way Air Discharge Cassette Type ............................................................................ 176

13-2. Under Ceiling Type ....................................................................................................... 181

13-3. Replacement of Main Parts (Sold Separately) ........................................................... 186

13-4. High Wall Type ............................................................................................................... 188

13-5. Electric Parts................................................................................................................. 189

– 3 –

SAFETY CAUTION

The important contents concerned to the safety 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 property 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.

Turn off breaker.

Execute discharge

between terminals.

Prohibition

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

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

When removing the front panel or cabinet, execute short-circuit and discharge between 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 port is changed from one of the former R22.

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

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

Do not charge refrigerant additionally.

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

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

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

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

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

Never recover the refrigerant into the outdoor unit.

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

Assembly/Cabling

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

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

– 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 refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with new refrigerant during installation work or service work.

If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident.

Use the tools and materials exclusive to R410A to purpose a safe work.

2. Cautions on Installation/Service

1) Do not mix the other refrigerant or refrigerating oil.

For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of the former refrigerant in order to prevent mixture of them.

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

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

Use the clean pipes.

Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.)

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

5) R410A refrigerant is azeotropic mixture type refrigerant.

Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the refrigerant changes and then characteristics of the air conditioner change.)

3. Pipe Materials

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

It is necessary to select the most appropriate pipes to conform to the standard.

Use clean material in which impurities adhere inside of pipe or joint to a minimum.

1) Copper pipe

The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type.

When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe without seam” and one with bonded oil amount 0.0001 lbs / 32’ 10” (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. However clear impurities when using them.

– 7 –

4. Tools

1. Required Tools 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

Vacuum 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

Gas leakage check

air conditioner installation

R410A

Existence of Whether conven-

new equipment tional equipment

for R410A can be used

Yes *(Note)

Ye s N o

Ye s Ye s

Ye s N o

Conventional air

conditioner installation

Whether conventional

equipment can be used

Ye s

*(Note)

Ye s

(Note) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection

margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

General tools (Conventional tools can be used.)

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

1) Vacuum pump. Use vacuum pump by attaching vacuum pump adapter. 7) Screwdriver (+, –)

2) Torque wrench 8) Spanner or Monkey wrench

3) Pipe cutter 9) Hole core drill

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

5) Pipe bender 11) Tape measure

6) Level vial 12) Metal saw

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

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

2) Thermometer 4) Electroscope

– 8 –

1. SPECIFICATIONS

1-1. 4-Way Air Discharge Cassette Type

RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL

Size

System Outdoor Model RAV-

Indoor Model RAV-

Cooling Rated Capacity (Btu/h)

SEER

Performance EER

Heating Rated Capacity (Btu/h)

HSPF

Outdoor Min - Max DB ∗1 (°F)

Operating range

Piping

Electrical

Indoor

Grill

Cooling Indoor Min - Max DB (°F)

Indoor Min - Max WB (°F)

Heating

Standard Piping Length (ft.)

Min. Piping Length (ft.)

Max. Piping Length (ft.)

Lift (Outdoor below Indoor) (ft.)

Lift (Outdoor above Indoor) (ft.)

Gas Pipe (Size / connection type)

Liquid Pipe (Size / connection type)

Additional refrigerant charge under long piping connection

Voltage

Cooling Power Consumption (W)

Heating Power Consumption (W)

Cooling Running Current (A)

Heating Running Current (A)

Maximum Running Current Amps (A)

Breaker (A)

Fuse Rating ∗2

Dimensions Height (in.)

Weight -Gross / Net (lbs.)

Sound Pressure at Different Speeds

Air flow DRY (CFM) (H/M/L)

Model name RBC-

Dimensions Height (in.)

Weight -Gross / Net (lbs.)

Appearance (Munsell symbol)

Outdoor WB Min - Max (°F)

Indoor DB Min -Max (°F)

Width (in.)

Length (in.)

(dBa) (H/M/L)

Width (in.)

Length (in.)

018 024 030 036 042

SP180AT2-UL SP240AT2-UL SP300AT2-UL SP360AT2-UL SP420AT2-UL

SP180UT-UL SP240UT-UL SP300UT-UL SP360UT-UL SP420UT-UL

19000 25000 32000 36400 40500

20.50 20.70 21.00 21.00 19.00

10.7 11.0 14.0 13.0 11.5

18800 26000 33400 36000 46000

11.50 9.50 11.00 11.90 10.30

23 to 109.4

69.8 to 89.6

59 to 75.2

–4 to 59

59 to 86

16’ 5” 16’ 5” 9’ 8” 9’ 8” 9’ 8”

164’ 1” 164’ 1” 246’ 1” 246’ 1” 246’ 1”

98’5”

1/2” 5/8” 5/8” 5/8” 5/8”

1/4” 3/8” 3/8” 3/8” 3/8”

0.22 oz/ft 0.43 oz/ft 0.43 oz/ft

(65’7”ft to 164’1”ft) (98’5”ft to 164’1”ft) (98’ 5” ft to 246’ 1” ft)

208 V / 230 V-1-60 Hz

1776 2273 2286 2800 3522

1430 2270 2240 2770 3720

7.91 10.25 10.30 12.47 15.71

6.36 10.20 10.10 12.32 16.56

17 24 24 24 24

20 25 25 25 25

30 40 40 40 40

33.1 33.1 33.1 33.1 33.1

10.1 10.1 12.6 12.6 12.6

33.1 33.1 33.1 33.1 33.1

44 / 53 44 / 53 53 / 64 53 / 64 53 / 64

37 / 35 / 34 39 / 35 / 34 46 / 40 / 36 47 / 41 / 38 47 / 41 / 38

600/500/450 700/550/460 1150/820/670 1200/820/700 1200/820/700

U31PG(W)-UL U31PG(W)-UL U31PG(W)-UL U31PG(W)-UL U31PG(W)-UL

37.4

1.2

37.4

10 / 15.5

Moon white (2.5GY9.0 / 0.5)

∗1 When installed a duct or wind shield so that it is not affected by the wind.

The minimum outside temperature will be 5°F

∗2 UL value

– 9 –

1-2. Under Ceiling Type

RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL

Size

System Outdoor Model RAV-

Indoor Model RAV-

Cooling Rated Capacity (Btu/h)

SEER

Performance EER

Heating Rated Capacity (Btu/h)

HSPF

Outdoor Min - Max DB ∗1 (°F)

Cooling Indoor Min - Max DB (°F)

Operating range

Piping

Heating

Standard Piping Length (ft.)

Min. Piping Length (ft.)

Max. Piping Length (ft.)

Lift (Outdoor below Indoor) (ft.)

Lift (Outdoor above Indoor) (ft.)

Indoor Min - Max WB (°F)

Outdoor WB Min - Max (°F)

Indoor DB Min -Max (°F)

018 024 030 036 042

SP180AT2-UL SP240AT2-UL SP300AT2-UL SP360AT2-UL SP420AT2-UL

SP180CT-UL SP240CT-UL SP300CT-UL SP360CT-UL SP420CT-UL

17000 23600 30000 36000 41000

17.00 19.50 20.60 20.40 18.80

8.6 9.0 13.0 12.0 9.7

19000 28800 29800 38000 44500

10.80 10.30 8.50 11.00 11.00

23 to 109.4

69.8 to 89.6

59 to 75.2

–4 to 59

59 to 86

16’ 5” 16’ 5” 9’ 8” 9’ 8” 9’ 8”

164’ 1” 164’ 1” 246’ 1” 246’ 1” 246’ 1”

98’ 5”

Electrical

Indoor

Gas Pipe (Size / connection type)

Liquid Pipe (Size / connection type)

Additional refrigerant charge under long piping connection

Voltage

Cooling Power Consumption (W)

Heating Power Consumption (W)

Cooling Running Current (A)

Heating Running Current (A)

Maximum Running Current Amps (A)

Breaker (A)

Fuse Rating ∗2

Width (in.)

Dimensions Height (in.)

Length (in.)

Weight -Gross / Net (lbs.)

Appearance (Munsell symbol)

Sound Pressure at Different Speeds

(dBa) (H/M/L)

1/2” 5/8” 5/8” 5/8” 5/8”

1/4” 3/8” 3/8” 3/8” 3/8”

0.22 oz / ft 0.43 oz / ft 0.43 oz / ft

(65’7”ft to 164’1”ft) (98’5”ft to 164’1”ft) (98’ 5” ft to 246’ 1” ft)

208 V / 230 V-1-60 Hz

1977 2622 2308 3000 4227

1790 2840 2390 3210 3940

8.86 11.88 10.50 13.66 18.94

8.00 12.74 10.71 14.34 17.58

17 24 24 24 24

20 25 25 25 25

30 40 40 40 40

35.8 46.5 62.8 62.8 62.8

8.3 8.3 8.3 8.3 8.3

26.8 26.8 26.8 26.8 26.8

46/60 55/75 73/95 73/95 73/95

Shine white (10Y9.3 / 0.4)

40 / 37 / 34 42 / 40 / 37 45 / 42 / 38 47 / 44 / 40 47 / 44 / 40

Air flow DRY (CFM) (H/M/L)

410/360/320 590/530/470 860/750/660 950/820/730 950/820/730

∗1 When installed a duct or wind shield so that it is not affected by the wind.

The minimum outside temperature will be 5°F

∗2 UL value

– 10 –

1-3. High Wall Type

RAV-SP180KRT-UL, RAV-SP240KRT-UL

Size

System Outdoor Model

Indoor Model

Cooling Rated Capacity (Btu/h)

SEER

Performance EER

Heating Rated Capacity (Btu/h)

HSPF

Cooling Indoor Min. -Max. DB (°F)

Operating range

Heating

Standard Piping Length (ft.)

Min. Piping Length (ft.)

Max. Piping Length (ft.)

Lift (Outdoor below Indoor) (ft.)

Piping

Lift (Outdoor above Indoor) (ft.)

Outdoor Min -Max DB ∗1 (°F)

Indoor Min. -Max. WB (°F)

Outdoor WB Min. - Max. (°F)

Indoor DB Min. - Max. (°F)

018 024

RAV-SP180AT2-UL RAV-SP240AT2-UL

RAV-SP180KRT-UL RAV-SP240KRT-UL

18000 25000

19.5 16.7

10.0 9.1

19000 26400

11.5 9.8

23 to 109.4

69.8 to 89.6

59 to 75.2

–4 to 59

59 to 86

16’ 5”

164’ 1”

98’ 5”

Gas Pipe (Size / connection type)

Liquid Pipe (Size / connection type)

Additional refrigerant charge under long piping connection

Voltage

Cooling Power Consumption (W)

Heating Power Consumption (W)

Cooling Running Current (A)

Electrical

Heating Running Current (A)

Maximum Running Current Amps (A)

Breaker (A)

Fuse Rating ∗2

Width (in.)

Dimensions Height (in.)

Length (in.)

Indoor Weight -Gross / Net (lbs.)

Appearance (Munsell symbol)

Sound Pressure at Different Speeds (dBa)

1/2” 5/8”

1/4” 3/8”

0.22 oz / ft 0.43 oz / ft

(65’ 7” ft to 164’ 1” ft) (98’ 5” ft to 164’ 1” ft)

208 V / 230 V-1-60 Hz

1800 2747

1710 2780

7.96 12.20

7.53 12.52

17 24

20 25

30 40

12.6

41.3

31 / 36

Moon White (2.5GY9.0 / 0.5)

43 / 41 / 38 46 / 41 / 38

Air flow DRY (CFM) (H/M/L)

490 / 430 / 400 560 / 460 / 410

∗1 When installed a duct or wind shield so that it is not affected by the wind.

The minimum outside temperature will be 5°F

∗2 UL value

– 11 –

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

2-1. 4-Way Air Discharge Cassette Type

RAV-SP180UT-UL

33’9” to 35’8”(860 to 910) Ceiling open dimension

Be sure to set a check port A at the position of the figure below.

Check port B ( 17’7”(450))

0.6”(15)

or more

39’4”(1000) or more

7’9”(200)

When a fresh-air inlet box is installed, make check port B at the side of the fresh-air inlet box

Hole for remote controller wires

Conduit hole(Knockout)

Hole for power supply cable

Refrigerant pipe connecting port (Liquid)Ø1/4”(6.4)

5’1”

(129)

3’0”

4’1”

(77)

Ceiling bottom surface

(105)

7’9”(200)

2’3”

(58)

4’4”

(112)

6’8”(172)

Refrigerant pipe connecting port (Gas)Ø1/2”(12.7)

2’9” (74)

Ø6’4”(162)

Check port A

( 17’7”(450))

1’7”

(42)

Electric parts box

12’0”(306)

11’1”(281)

9’9”(251)

1’6”

3’0”

(40)

(77)

4’1”

(105)

2’9”

(74)

15’6”(397.5)

9’5”(241.5)

2’8”

4’2”

(72)

(106.5)

37’4”(950) Panel external dimension

30’7”(780) Hanging bolt pitch

4’1”

(105)

2’0”(50)

1’2”(30)

6’1”

13’3” (337.5)

1’6”

12’7”(323)

Ceiling bottom surface

(156)

(41)

0.6”(15)

or more

39’4”(1000)

or more

33’9” to 35’8”(860 to 910) Ceiling open dimension

5’1”

(129)

7’4”(189)

Knockout square hole

Drain pipe connecting port

For Ø5’9”(150)

Hanging bolt 3/8”(M10) (To be procured locally)

Space required for installation

Stand-up 33’5”(850) or less

Stand-up 26’0”(661) or less

11’8”(300)

or less

Drain-up standing-up size

10’1”(256)

6’4”(163.5)18’9”(480)7’7”(196.5)

39’4”(1000) or more

Ceiling bottom surface

Indoor unit

5’2”(132)

3’1”(80)

Ceilng bottom surface

Unit : in(mm)

4’1”

(105)

11’3”

(287.5)

4’1”

(105)

5’3”

(135)

9’4”(240)

4’1”

(105)

8’2”

(207.5)

Ø6’4”(162)

Knockout square hole For 2-Ø5’9”(150)

Knockout square hole For Ø5’9”(150)

1’4”

(35)

4’7”

(120)

4’0”

(101)

16’1”(408)

33’1”(840) Unit external dimension

6’9”(175)

14’3”(362.5)

18’9”(480) 7’2”(185)

4’1”

(105)

0.2”(5)

5’1”

(129)

10’6”(269)

9’3”(235)

2’9”

4’1”

3’0”

(74)

(105)

(77)

14’7”

(372.5)

2’9” (74)

16’4”(416.5)

10’1”(256.5)

8’8”(223.5)

27’2”±0.8”(690) Hanging bolt pitch

37’4”(950) Panel external dimension

45˚

1’4” (35)

2’2”

(57)

2’5”

1’1”

(64)

2’4”

(61)

(28.5)

6’1”(155)

7’4”(187)

Ceilng bottom surface

1’3”

(32)

Knockout square hole

4’1”

(105)

4’1”(105)

15’1”(384) 13’8”(351)

4’7”

(120)

Knockout for simple OA For Ø3’9”(100)

Z view

4’0”

(101)

1’2” (30)

5’1”(129)

Knockout

3’0”(77)

square hole For Ø5’9”(150)

0.6” (16.5)

Knockout square hole

Ceiling panel (sold separately)

Ceilng bottom surface

Indoor unit

0.5” Ceilng bottom

(12)

surface

Ceilng panel

– 12 –

RAV-SP240UT-UL

Be sure to set a check port A at the position of the figure below.

Check port B ( 17’7”(450))

33’9” to 35’8”(860 to 910) Ceiling open dimension

0.6”(15)

or more

39’4”(1000) or more

7’9”(200)

When a fresh-air inlet box is installed, make check port B at the side of the fresh-air inlet box

7’9”(200)

Hole for remote controller wires

Conduit hole(Knockout)

Hole for power supply cable

2’3”

(58)

4’4”

(112)

6’8”(172)

Refrigerant pipe connecting port (Liquid)Ø3/8”(9.5)

Refrigerant pipe connecting port (Gas)Ø5/8”(15.9)

5’1”

(129)

3’0”

4’1”

Ceiling bottom surface

(77)

(105)

2’9”

(74)

Ø6’4”(162)

Check port A

( 17’7”(450))

1’7”

(42)

Electric parts box

12’0”(306)

11’1”(281)

9’9”(251)

3’0”

1’6”

(77)

(40)

4’1”

(105)

2’9”

(74)

15’6”(397.5)

9’5”(241.5)

2’8”

4’2”

(72)

(106.5)

37’4”(950) Panel external dimension

30’7”(780) Hanging bolt pitch

4’1”

(105)

2’0”(50)

1’2”(30)

6’1”

13’3” (337.5)

1’6”

12’7”(323)

Ceiling bottom surface

(156)

(41)

0.6”(15)

or more

39’4”(1000)

or more

33’9” to 35’8”(860 to 910) Ceiling open dimension

5’1”

(129)

7’4”(189)

Knockout square hole

Drain pipe connecting port

For Ø5’9”(150)

Hanging bolt 3/8”(M10) (To be procured locally)

Space required for installation

Stand-up 33’5”(850) or less

Stand-up 26’0”(661) or less

11’8”(300)

or less

Drain-up standing-up size

10’1”(256)

6’4”(163.5)18’9”(480)7’7”(196.5)

39’4”(1000) or more

Ceiling bottom surface

Indoor unit

5’2”(132)

3’1”(80)

Ceilng bottom surface

Unit : in(mm)

4’1”

Ø6’4”(162)

(105)

Knockout square hole For 2-Ø5’9”(150)

Knockout square hole For Ø5’9”(150)

11’3”

(287.5)

4’1”

(105)

5’3”

(135)

9’4”(240)

4’1”

(105)

8’2”

(207.5)

1’4”

(35)

4’7”

(120)

4’0”

(101)

16’1”(408)

33’1”(840) Unit external dimension

6’9”(175)

14’3”(362.5)

18’9”(480) 7’2”(185)

4’1”

(105)

0.2”(5)

5’1”

(129)

10’6”(269)

9’3”(235)

2’9”

4’1”

3’0”

(74)

(105)

(77)

14’7”

(372.5)

2’9” (74)

16’4”(416.5)

10’1”(256.5)

8’8”(223.5)

27’2”±0.8”(690) Hanging bolt pitch

37’4”(950) Panel external dimension

45˚

1’4” (35)

2’2”

(57)

2’5”

1’1”

(64)

(61)

6’1”(155)

7’4”(187)

(28.5)

Ceilng bottom surface

1’3”

(32)

2’4”

Knockout square hole

4’1”

(105)

4’1”(105)

15’1”(384) 13’8”(351)

4’7”

(120)

Knockout for simple OA For Ø3’9”(100)

Z view

4’0”

(101)

1’2” (30)

5’1”(129) 3’0”(77)

Indoor unit

Knockout square hole For Ø5’9”(150)

0’6”

(16.5)

Knockout square hole

Ceiling panel (sold separately)

Ceilng bottom surface

Ceilng panel

0.5” Ceilng bottom

(12)

surface

– 13 –

RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL

33’9” to 35’8”(860 to 910) Ceiling open dimension

Be sure to set a check port A at the position of the figure below.

Check port B ( 17’7”(450))

0.6”(15)

or more

39’4”(1000) or more

7’9”(200)

When a fresh-air inlet box is installed, make check port B at the side of the fresh-air inlet box

7’9”(200)

Hole for remote controller wires

Conduit hole(Knockout)

Hole for power supply cable

2’3”

(58)

4’4”

(112)

6’8”(172)

Refrigerant pipe connecting port (Liquid)Ø3/8”(9.5)

Refrigerant pipe connecting port (Gas)Ø5/8”(15.9)

Ceiling bottom surface

5’1”

(129)

3’0”

4’1”

(105)

5’4”

(137)

(77)

Electric parts box

Ø6’4”(162)

Check port A

( 17’7”(450))

1’7”

(42)

12’0”(306)

11’1”(281)

9’9”(251)

1’6”

3’0”

(40)

(77)

4’1”

(105)

5’4”

(137)

15’6”(397.5)

9’5”(241.5)

2’8”

4’2”

(72)

(106.5)

37’4”(950) Panel external dimension

30’7”(780) Hanging bolt pitch

4’1”

(105)

2’0”(50)

1’2”(30)

6’1”

4’1”

13’3” (337.5)

12’7”(323)

Ceiling bottom surface

(156)

(104)

0.6”(15)

or more

39’4”(1000)

or more

33’9” to 35’8”(860 to 910) Ceiling open dimension

5’1”

(129)

7’4”(189)

Knockout square hole For Ø5’9”(150)

Drain pipe connecting port

Hanging bolt 3/8”(M10) (To be prpcured locally)

Space required for installation

Stand-up 33’5”(850) or less

Stand-up 26’0”(661) or less

11’8”(300)

or less

Drain-up standing-up size

12’6”(319)

6’4”(163.5)18’9”(480)7’7”(196.5)

39’4”(1000) or more

Ceiling bottom surface

Indoor unit

5’2”(132)

3’1”(80)

4’1”

(105)

Ceilng bottom surface

Unit : in(mm)

Ø6’4”(162)

Knockout square hole For 2-Ø5’9”(150)

Knockout square hole For Ø5’9”(150)

11’3”

(287.5)

4’1”

(105)

5’3”

(135)

9’4”(240)

4’1”

(105)

8’2”

(207.5)

1’4”

(35)

7’2”

(183)

4’0”

(101)

16’1”(408)

33’1”(840) Unit external dimension

6’9”(175)

14’3”(362.5)

18’9”(480) 7’2”(185)

4’1”

(105)

0.2”(5)

5’1”

(129)

10’6”(269)

9’3”(235)

5’4”

4’1”

3’0”

(137)

(105)

(77)

14’7”

(372.5)

5’4”

(137)

16’4”(416.5)

10’1”(256.5)

8’8”(223.5)

27’2”±0.8”(690) Hanging bolt pitch

37’4”(950) Panel external dimension

45˚

1’4” (35)

2’2”

(57)

2’5”

1’1”

(64)

2’4”

(61)

(28.5)

6’1”(155)

7’4”(187)

1’3”

(32)

Knockout square hole

4’1”

(105)

4’1”(105)

15’1”(384) 13’8”(351)

7’2”

4’0”

(183)

(101)

1’2” (30)

Knockout for simple OA For Ø3’9”(100)

Ceilng bottom surface

Z view

5’1”(129) 3’0”(77)

Knockout square hole For Ø5’9”(150)

0.6” (16.5)

Knockout square hole

Ceiling panel (sold separately)

Ceilng bottom surface

Indoor unit

0.5” Ceilng bottom

(12)

surface

Ceilng panel

– 14 –

2-2. Under Ceiling Type

RAV-SP180CT-UL

Upper pipe draw-out port (Knockout)

Hole for remote controller wires(Knockout)

Conduit hole (Hole for power supply cable, knockout)

3’3”

(84)

1’5”

(39)

2’0”

(52)

8’5”(216)

4’3”

3’0”

(110)

(76)

2’0”

(50)

8’3”(210)

6’6”(167)

4’1”

(105)

Pipe draw-out port(Knockout)

Drain port VP20 (lnner dia.Ø1’0”(26), hose supplied)

6’7”(170)

12’6”(320)

(Hanging position)

Refrigerant pipe connecting port Ø1/4”(6.4)(Liquid side)

12’4”(316)

10’3”(262)

5’3”(135)

7’8”(197)

2’8”

2’1”

(53)

Left drain size

33’7”(855)

(Hanging position)

35’8”(910)

3’5”

1’2”

(90)

(31)

Conduit hole(Hole for power supply cable)

(70)

3’0”

3’8”

(75)

(97)

5’7”

(146)

Conduit hole (Knockout)

1’3”

(32)

5’1”

(130)

Refrigerant pipe connecting port Ø1/2”(12.7) (Gas side)

Drain pipe connecting port

26’8”(680)

Hanging bolt

5’6”

7’9”(200)(Liquid pipe)

8’5”(216)(Gas pipe)

Ceiling surface

Within

2’0”(50)

4’5”(114)

(141)

Unit

5’7”(145)

Knockout hole Ø3’6”(92)

Hole for remote controller wires

Piping hole on the wall(Ø3’9”(100) hole)

3’6”

(92)

6’7”(171)

3’3”

(84)

Left drain pipe draw-out port (Knockout)

9’8”(250) or more 9’8”(250) or more

(Front side to be positioned horizontally.)

Space required for installation and servicing

Wireless sensor mounting section

or more

19’7”(500)

Unit : in(mm)

– 15 –

RAV-SP240CT-UL

Hole for remote controller wires(Knockout)

Conduit hole (Hole for power supply cable, knockout)

3’3”

(84)

Upper pipe draw-out port (Knockout)

1’5”

2’0”

(39)

(52)

8’5”(216)

4’3”

3’0”

(110)

(76)

2’0”

(50)

8’3”(210)

6’6”(167)

4’1”

(105)

Pipe draw-out port(Knockout)

Drain port VP20 (lnner dia.Ø1’0”(26), hose supplied)

6’7”(170)

12’6”(320)

(Hanging position)

12’4”(316)

10’3”(262)

5’3”(135)

7’8”(197)

2’8”

2’1”

Left drain size

44’3”(1125)(Hanging position)

Refrigerant pipe connecting port Ø3/8”(9.5)(Liquid side)

Refrigerant pipe connecting port Ø5/8”(15.9)(Gas side)

46’5”(1180)

3’5”

1’2”

(90)

(31)

Conduit hole(Hole for power supply cable)

Conduit hole (Knockout)

1’3”

(32)

(53)

(70)

3’0”

(75)

3’8”

(97)

5’7”

(146)

5’1”

(130)

Drain pipe connecting port

Hanging bolt

26’8”(680)

Within

2’0”(50)

5’6”

7’9”(200)(Liquid pipe)

8’5”(216)(Gas pipe)

Ceiling surface

Unit

4’5”(114)

(141)

5’7”(145)

Knockout hole Ø3’6”(92)

Hole for remote controller wires

Piping hole on the wall(Ø3’9”(100) hole)

3’6”

(92)

6’7”(171)

3’3”

(84)

Left drain pipe draw-out port (Knockout)

9’8”(250) or more 9’8”(250) or more

(Front side to be positioned horizontally.)

Space required for installation and servicing

Wireless sensor mounting section

or more

19’7”(500)

Unit : in(mm)

– 16 –

RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL

3’3”

(84)

6’7”(170)

12’6”(320)

(Hanging position)

Conduit hole (Hole for power supply cable, knockout)

Left drain size

Upper pipe draw-out port (Knockout)

Hole for remote controller wires(Knockout)

1’5”

(39)

2’8”

2’1”

60’6”(1540)(Hanging position)

Refrigerant pipe connecting port Ø3/8”(9.5)(Liquid side)

Refrigerant pipe connecting port Ø5/8”(15.9)(Gas side)

(53)

(70)

2’0”

(52)

8’5”(216)

4’3”

3’0”

(110)

(76)

3’0”

3’8”

(75)

(97)

5’7”

(146)

Pipe draw-out port(Knockout)

8’3”(210)

6’6”(167)

4’1”

2’0”

5’1”

(50)

(130)

(105)

26’8”(680)

Drain pipe connecting port

Drain port VP20 (lnner dia.Ø1’0”(26), hose supplied)

4’5”(114)

5’6”

(141)

7’9”(200)(Liquid pipe)

8’5”(216)(Gas pipe)

3’5”

1’2”

(90)

12’4”(316)

10’3”(262)

5’3”(135)

7’8”(197)

5’7”(145)

Hole for remote controller wires

Piping hole on the wall(Ø3’9”(100) hole)

(31)

Knockout hole Ø3’6”(92)

62’8”(1595)

Conduit hole(Hole for power supply cable)

Conduit hole (Knockout)

1’3”

(32)

3’6”

(92)

9’8”(250) or more 9’8”(250) or more

(Front side to be positioned horizontally.)

Space required for installation and servicing

Hanging bolt

Within

2’0”(50)

6’7”(171)

3’3”

(84)

Left drain pipe draw-out port (Knockout)

Ceiling surface

Unit

or more

19’7”(500)

– 17 –

Wireless sensor mounting section

Unit : in(mm)

2-3. High Wall Type

RAV-SP180KRT-UL

41’3”(1050)

Front panel

2’9”(73.5)

2’0”(50)

Knock out

0.3”(7)

system

Hole for power supply cable

Air filter

12 ’6”(320)

Heat exchanger

5’2”(132) 22’4”(568) 7’9”(200) 5’9”(150)

1’0”(32)

1’6”(40)

Installation plate hanger

Connecting pipe 13’4”(0.34m)

Ø1/2”(12.7mm)

Air inlet

Knock out system

Installation plate hanger

Drain hose 19’7”(0.5m)

2’0”(50)

2’8”

3’1”

(72)

(78)

Connecting pipe 12’3”(0.49m)

Ø1/4”(6.35mm)

9’0”(228)

2’0”(50)

Knock out system

Unit : ln(mm)

2’9”(73.5)

0.3”(7)

CAUTION

Connecting pipe cannot be connected to the right side of the indoor unit when conduit pipe is used.

When connecting pipe is connected onthe left or bottom of the indoor unit, connect the conduit pipe on other side.

Space required for installation and servicing

B C

1’6”(40)

12’6”(316)

Distance Comments

2’0”(50) or more

33’5”(850) or moreBFor exchange of cross flow fan

6’7”(170) or more

1’9”(47)

– 18 –

6’2”(157)

2’2” (56)

Wireless remote controller

9’3”(235) 9’3”(235)

3’3”

(85)

8’5”(215.5) 10’3”(262.5) 10’3”(262.5)

Hanger

Center line

0.9” (24)

8’5”(215) 8’5”(215)

Hanger

Instrallation plate outline

Remote controller holder

3’2” (82)

0.9” (23)

6’0”

(153.5)

5’2”(132)30’9”(786)5’2”(132)

0.9”(26)

4’3”

(109)

6’4"(163)

1’6”(40)

RAV-SP240KRT-UL

41’3”(1050)

Front panel

2’9”(73.5)

Knock out

0.3”(7)

system

2’0”(50)

Air filter

12’6”(320)

Heat exchanger

5’2”(132) 22’4”(568) 7’9”(200) 5’9”(150)

1’0”(32)

Air inlet

Knock out system

Installation plate hanger

2’8” (72)

3’1” (78)

2’0”(50)

9’0”(228)

2’0”(50)

Knock out system

2’9”(73.5)

0.3”(7)

Hole for power supply cable

Installation plate hanger

Connecting pipe 13’4”(0.34m)

1’6”(40)

Drain hose 19’7”(0.5m)

Ø5/8”(15.9mm)

CAUTION

Connecting pipe cannot be connected to the right side of the indoor unit when conduit pipe is used.

When connecting pipe is connected on the left or bottom of the indoor unit, connect the conduit pipe on other side.

Space required for installation and servicing

B C

1’6”(40)

12’6”(316)

Connecting pipe 12’3”(0.49m)

Ø3/8”(9.52mm)

2’2” (56)

Wireless remote controller

9’3”(235) 9’3”(235)

3’3” (85)

8’5”(215) 8’5”(215)

Hanger

6.2”(157)

0.9” (24)

Unit : ln(mm)

6’4”(163)

3’2” (82)

0.9”(26)

Remote controller holder

5’2”(132)30’9”(786)5’2”(132)

0.9”

(23)

1’6”(40)

Distance Comments

2’0”(50) or more

33’5”(850) or moreBFor exchange of cross flow fan

6’7”(170) or more

1’9”(47)

– 19 –

Hanger

8’5”(215.5) 10’3”(262.5) 10’3”(262.5)

Center line

Hanger

Instrallation plate outline

6’0”

(153.5)

4’3”

(109)

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM

3-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type

• Single type (Combination of 1 indoor unit and 1 outdoor unit)

Dimension table

Distributor (Strainer incorporated)

TC sensor

Refrigerant pipe at liquid side (Outer dia : ØB)

To outdoor unit

Indoor unit

(Indoor unit)

TCJ sensor

Air heat

exchanger

Outer diameter of refrigerant pipe (In (mm))

Gas side ØA Liquid side ØB

Strainer

Heating Cooling

Refrigerant pipe at gas side (Outer dia : ØA)

To outdoor unit

RAV-SP180

RAV-SP240, 300, 360, 420 type

1/2” (12.7) 1/4” (6.4)

5/8” (15.9) 3/8” (9.5)

– 20 –

3-2. High Wall Type

• Single type (Combination of 1 indoor unit and 1 outdoor unit)

Dimension table

Distributor (Strainer incorporated)

To outdoor unit

Indoor unit

TC sensor

Refrigerant pipe at liquid side (Outer dia : ØB)

(Indoor unit)

TCJ sensor

Air heat

exchanger

Heating Cooling

Refrigerant pipe at gas side (Outer dia : ØA)

To outdoor unit

Outer diameter of refrigerant pipe (In (mm))

Gas side ØA Liquid side ØB

RAV-SP180KRT-UL

RAV-SP240KRT-UL

1/2” (12.7) 1/4” (6.4)

5/8” (15.9) 3/8” (9.5)

– 21 –

4. WIRING DIAGRAM

4-1. 4-Way Air Discharge Cassette Type

RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL

LM4LM2LM3LM1

5 4 3

1 2

5 4 3

1 2

5 4 3

1 2

5 4 3

1 2

5 4 3

1 2

(RED)

5 4 3

1 2

5 4 3

1 2

5 4 3

1 2

(BLU) (WHI) (BLK)

16 17

11 12

6 7

1 2

(WHI)

CN333

CN104

CN34

(RED)

(WHI)

CN504

(WHI)

CN510

Motor drive

(YEL)

SW501

F02

Fuse

circuit

TCJ

(BLK)

(RED)

CN101

CN102

(High Wall Setting)

250V~

T3.15A

CN519

(CHK)

CN71

(WHI)

CN72 (DISP)

(RED)

CN508

CN80

(GRN)

CN73

(RED)

CN70

(WHI)

CN20

(BLU)

CN50

(WHI)

CN60

(WHI)

CN32

(WHI)

CN61

(YEL)

(EXCT)

5 1 2 1 2 1 23 1 2 34 51 21 2 3 4 5 61 2 3 4 5 6

1 2

(T10) (Fan Draive)

5 4 3

1 2

Connection Interface(Option)

Fan Motor

Parts Name

Temp sensor

Louver motor

Indoor temp sansor

Symbol

TC,TCJ

LM1,2,3,4

Float switch

Drain pump motor

Color

Identification

1 2

(WHI)

CN334

BLACK

BLUE

RED

GRAY

PINK

GREEN

WHITE

GRN

WHI

BROWN

BRW

:::::::::

BLK

BLU

RED

GRY

PNK

F01

Fuse

T6.3A

250V~

RED

ORANGE

YELLOW :

ORN

YEL

– 22 –

CN67

(BLK)

WHI

BLK

Indoor unit

earth screw

P01

CN66

(WHI)

BLK

High voltage 208/230-1-60

(YEL)

CN309

CN41

(BLU)

3 1 3

1 2

BLK BLK

WHI BLK

Low voltage

Outdoor unit

earth screw

Controller

Adapter for

Wireless Remote

Controller

Wired Renote

Outdoor unit

4-2. Under Ceiling Type

RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL

BLACK

BLUE

RED

GRAY

Float

switch

Float Switch

(Sold Separately)

:::::::::

Color

Identification

BLK

BLU

RED

GRY

PINK

PNK

GREEN

WHITE

BROWN

GRN

WHI

BRW

ORANGE

YELLOW :

ORN

YEL

Drain Pump

(Sold Separately)

(Fan drive)

MCC-1402

Control P.C. board for Indoor Unit

Parts Name

Symbol

Temp . sensor

Drain pump motor

Indoor temp sansor

Temp . sensor

Drain control relay

TCJ

RY302

Capacitor

– 23 –

4-3. High Wall Type

RAV-SP180KRT-UL, RAV-SP240KRT-UL

TERMINAL FOR CENTRAL

REMOTE CONTROLLER

BLU

CN40

(BLU)

BLK

3 3

CN41

LOW

WHI

(BLU)

VOLTAGE

CN100

(BRW)

WIRED REMOTE

HEAT

EXCHANGER

SENSOR

(TC)

BLK

CN101

(BLU)

BLKWHI

CONTROLLER

HEAT

EXCHANGER

SENSOR

BLK

CN103

(GRN)

CN102

(YEL)

(TCJ)

CN001(WHI)

THERMO

BLK

1 1

CN104

CONTROLLER

ADAPTER FOR

WIRELESS REMOTE

(Standalone Receiver Type)

SENSOR

(TA)

BLK

2 2

(WHI)

45231

LOUVER MOTOR

FAN

MOTOR

BLK

WHI

YEL YEL YEL YEL

RED

BLK WHI YEL BLU

1 12 2

4 5 6

465 231

312 54

HBS

CN22

CN44

(BRW)

CN33

(WHI)

CN210

CN82

(BLU)

CN50

(WHI)

DC15V

DC0V

DC12V

POWER

DC7V

SUPPLY

CIRCUIT

95876

CN213(WHI)

1 2

CN80

(GRN)

PNL/EMGOPTIONFAN DRIVE

432156 321

1. indicates the terminal block.

Letter at inside indicates the terminal number.

2. A dotted line and broken line indicate the wiring at site.

CN60

(WHI)

CN61

(YEL)

5 6 4

3. indicates the control P.C.board.

(MCC-1510)

12 321

CN32

(WHI)

Control P.C board for indoor unit

WHI

BLU BLU BLU

789

BLU

8 365472

8365472

(MCC-5044)

AND INDICATION PARTS

1110

INFRARED RAYS RECEIVE

COLOR IDENTIFICATION

BRW : BROWN

RED : RED

WHI : WHITE

YEL : YELLOW

BLU : BLUE

BLK : BLACK

GRY : GRAY

PNK : PINK

ORN : ORANGE

GRN&YEL : GREEN &YELLOW

GRN : GREEN

GRN & YEL

F301 FUSE

T3.15A 250V~

1 1

RED

HEAT

EXCHANGER

3 3

BLK

WHI

INDOOR

– 24 –

5 5

UNIT

CN67

(BLK)

EARTH

4 5 321

CN81(BLK)

(YEL)

CN309

L2 L1

SCREW

UNIT

208/230-1-60

OUTDOOR

HIGH VOLTAGE

L2L1 S

OUTDOOR

UNIT

EARTH

SCREW

5. SPECIFICATIONS OF ELECTRICAL PARTS

5-1. 4-Way Air Discharge Cassette Type

RAV-SP180UT-UL, RAV-SP240UT-UL

No.

Fan motor (for indoor)

Thermo. sensor (TA-sensor)

Heat exchanger sensor (TCJ-sensor)

Heat exchanger sensor (TC-sensor)

Float switch

Drain pump motor

Parts name

SWF-340U60-2

Ø6 mm, 1000 mm

FS-0218-102

RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL

No.

Fan motor

Thermo. sensor (TA-sensor)

Heat exchanger sensor (TCJ-sensor)

Parts name

ICF-340U150-1

Ø6 mm, 1000 mm

Type

328 mm

MDP-1401

Type

328 mm

Specifications

Output (Rated) 60 W

10 kΩ at 77°F (25°C)

—

Specifications

Output (Rated) 150 W

10 kΩ at 77°F (25°C)

Heat exchanger sensor (TC-sensor)

Float switch

Drain pump motor

Ø6 mm, 1000 mm

FS-0218-102

MDP-1401

10 kΩ at 77°F (25°C)

—

5-2. Under Ceiling Type

RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL

No.

Fan motor (SP180CT-UL)

Fan motor (SP240CT-UL)

Fan motor (SP300, 360, 420CT-UL)

Thermo. sensor (TA-sensor)

Heat exchanger sensor (TCJ-sensor)

Parts name

Type

SWF-340U60-1A

SWF-340U60-2A

SWF-340U120-2A

155 mm

Ø6 mm, 1200 mm

Specifications

Output (Rated) 60 W

Output (Rated) 120 W

10 kΩ at 77°F (25°C)

Heat exchanger sensor (TC-sensor)

Louver motor

Reactor

Ø6 mm, 1200 mm

MP24Z2N

CH-43-2Z-T

– 25 –

10 kΩ at 77°F (25°C)

DC 12 V

10 mH, 1 A

5-3. High Wall Type

RAV-SP180KRT-UL, RAV-SP240KRT-UL

No.

Fan motor (for indoor)

Grille motor

Thermo. Sensor (TA sensor)

Heat exchanger sensor (TC sensor)

Heat exchanger sensor (TCJ sensor)

Parts Name

n Name of Each Part

Air outlet / Louver

Change the direction of the air to be discharged according to cool/heat mode.

Type

ICF-340U30-1

MP24Z3T

318mm

Ø6,800mm

Specications

Output (Rated) 30W, 340V DC

Output (Rated) 1W, 16 poles DC

10kΩ at 77°F (25°C)

Air inlet grille

Air in the room is sucked from here.

Air filter

Removes dirt or dust. (Provided in the air inlet grille)

Earth screw

Earth screws are provided in the electric parts box.

– 26 –

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. Confirm the used refrigerant name, and use tools and materials exclusive for the refrigerant R410A.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

6-2. Refrigerant Piping Installation

6-2-1. Piping Materials and Joints Used

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

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

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

1. Copper Pipes

It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 0.0001 lbs / 32’ 10” (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.

– 27 –

Table 6-2-1 Thicknesses of annealed copper pipes

Thickness (In (mm))

Outer diameter (In (mm))

1/4” (6.4)

3/8” (9.5)

1/2” (12.7)

5/8” (15.9)

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 0.79” (20 mm). Thicknesses of socket joints are as shown in Table 6-2-2.

Table 6-2-2 Minimum thicknesses of socket joints

R410A R22

0.03” (0.80) 0.03” (0.80)

0.04” (1.00) 0.04” (1.00)

Reference outer diameter of copper pipe jointed

(In (mm))

1/4” (6.4)

3/8” (9.5)

1/2” (12.7)

5/8” (15.9)

Minimum joint thickness

(In (mm))

0.02” (0.50)

0.02” (0.60)

0.03” (0.70)

0.03” (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.

– 28 –

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

Outer diameter

(In (mm))

Thickness

(In (mm))

Flare tool for

R410A, R22clutch type

ØD

Fig. 6-2-1 Flare processing dimensions

A (In (mm))

Conventional flare tool (R410A)

Clutch type Wing nut type

1/4” (6.4)

3/8” (9.5)

1/2” (12.7)

5/8” (15.9)

Outer diameter

(In (mm))

1/4” (6.4)

3/8” (9.5)

1/2” (12.7)

5/8” (15.9)

0.03” (0.8)

0.04” (1.0)

0 – 0.02” (0 – 0.5)

0.04” – 0.06” (1.0 – 1.5) 0.06” – 0.08” (1.5 – 2.0)

0.04” – 0.06” (1.0 – 1.5) 0.08” – 0.10” (2.0 – 2.5)

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

Thickness

(In (mm))

0.03” (0.8)

0.04” (1.0)

ABCD

0.36” (9.1) 0.36” (9.2) 0.26” (6.5) 0.51” (13)

0.52” (13.2) 0.53” (13.5) 0.38” (9.7) 0.79” (20)

0.65” (16.6) 0.63” (16.0) 0.51” (12.9) 0.91” (23)

0.78” (19.7) 0.75” (19.0) 0.63” (16.0) 0.98” (25)

Dimension (In (mm))

Flare nut width

(In (mm))

0.67” (17)

0.87” (22)

1.02” (26)

1.14” (29)

Outer diameter

(In (mm))

1/4” (6.4)

3/8” (9.5)

1/2” (12.7)

5/8” (15.9)

3/4” (19.0)

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

Thickness

(In (mm))

0.03” (0.8)

0.04” (1.0)

Dimension (In (mm))

ABCD

0.36” (9.1) 0.36” (9.2) 0.26” (6.5) 0.51” (13)

0.51” (13.0) 0.53” (13.5) 0.38” (9.7) 0.79” (20)

0.64” (16.2) 0.63” (16.0) 0.51” (12.9) 0.79” (20)

0.76” (19.4) 0.75” (19.0) 0.63” (16.0) 0.91” (23)

0.92” (23.3) 0.94” (24.0) 0.76” (19.2) 1.34” (34)

– 29 –

Flare nut width

(In (mm))

0.67” (17)

0.87” (22)

0.94” (24)

1.06” (27)

1.42” (36)

45˚to 46˚

B A

43˚to 45˚

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

2. Flare Connecting Procedures and Precautions

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

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

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

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

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

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

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

Table 6-2-6 shows reference values.

NOTE:

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

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

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

Outer diameter (In (mm))

1/4” (6.4)

3/8” (9.5)

1/2” (12.7)

5/8” (15.9)

Tightening torque (ft • lbs (N • m))

10 – 13 (14 – 18)

24 – 31 (33 – 42)

37 – 46 (50 – 62)

50 – 60 (68 – 82)

– 30 –

6-3. Tools

6-3-1. Required Tools

Refer to the “4. Tools” (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 –101 kpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s power switch.

Connect the charge hose of the vacuum pump adapter.

Open fully both packed valves at liquid and gas sides.

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

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

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

liquid refrigerant.

(For refrigerant charging, see the figure below.)

1) Never charge refrigerant exceeding the specified amount.

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

3) Do not carry out additional charging.

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

(INDOOR unit)

(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

– 31 –

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.

– 32 –

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature.

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

• It is easy to remove slag after brazing.

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

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

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

3. Types of flux

• Noncorrosive flux

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

It is effective in case where the brazing temperature is higher than 1472°F (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 2.9 psi (0.02 MPa) 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

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.

Used brazing

filler

Phosphor copper

Silver

Used

flux

Do not use

Paste flux

Vapor flux

Flow meter

Stop valve

Nitrogen gas

cylinder

From Nitrogen cylinder

Pipe

Nitrogen gas

Rubber plug

Fig. 6-5-1 Prevention of oxidation during brazing

– 33 –

7. INDOOR CONTROL CIRCUIT

7-1. Indoor Controller Block Diagram

(4-Way Air Discharge Cassette Type / Under Ceiling Type)

7-1-1. Connection of Wired Remote Controller

Master wired remote controller (Max. 2 units) Weekly timer

Indoor unit #1 (Header)

Louver

motor

Drain pump

∗ Separately sold parts for ceiling type.

Indoor

fan motor

DC280V

Indoor control P.C. board

DC20V

DC5V

DC12V

Humidifier output

Power circuit

control circuit

Display LCD Function setup

Display LED

Remote controller

communication circuit

Remote controller

communication circuit

MCU

Fan motor

MCU

A B AB AB

Driver

Outside output

Run

Warning

Defrost

Thermo. ON

COOL HEAT

FAN

Key switch

Power circuit

signal input circuit

DC5V

MCU

synchronous

CN2

CN1

∗3

EEPROM

TA sensor

TC sensor

TCJ sensor

Float input

Auto grille

panel

Serial send/

receive circuit

Display

LCD

Powe r circuit

DC5V

(Follower)

LCD driver

MCU

Secondary

battery

Same as left

∗2

Function setup

Key switch

(Follower)

Same as left

321

∗2

321

Up to 8 units are connectable. ∗1 ∗1 However Max.7 units are connectable in case of mounting network adapter

when two main (sub) remote controllers are connected. ∗2 Connection of the weekly timer to the sub remote controller is unavailable.

– 34 –

321

Outdoor unit

7-1-2. Connection of Wireless Remote Controller Kit

Indoor unit #1 (Header)

Wireless remote controller kit

Receiver P.C. board

Display LED

Receive circuit Function setup SW

Louver

motor

Drain

pump

∗ Separately sold parts for ceiling type.

Indoor

fan motor

DC280V

Buzzer

DC5V

Powe r circuit

Indoor control P.C. board

DC20V

DC5V

DC12V

Humidifier output

Power circuit

control circuit

Remote controller

communication circuit

Remote controller

communication circuit

MCU

Fan motor

MCU

Driver

Outside output

Run

Warning

Defrost

Thermo. ON

COOL

HEAT

FAN

Grille up/down SW

Temporary

operation SW

MCU

synchronous

signal input circuit

EEPROM

TA sensor

TC sensor

TCJ sensor

Float input

Auto grille

panel

Serial send/

receive circuit

(Follower)

A B

Same as left

∗2

(Follower)

A B

Same as left

∗2

321

Up to 8 units are connectable. ∗1 ∗1 However Max.7 units are connectable in case of mounting network adapter

when two main (sub) remote controllers are connected.

– 35 –

321

Outdoor unit

7-1-3. Connection of Both Wired Remote Controller and Wireless Remote Controller Kit

Indoor unit #1 (Header)

Receive

circuit

Buzzer

DC5V

Powe r circuit

Display LED

MCU

Remote controller

communication circuit

Receiver P.C. board

Function setup SW

Grille up/down SW

Temporary

operation SW

Master wired remote controller

communication circuit

(Max. 2 units)

Display

LCD

Display

LED

Remote controller

ABAB

MCU

Function

setup

Key

switch

DC5V

Powe r circuit

CN2

CN1

∗3

Display

LCD

DC5V

Powe r circuit

Weekly timerWireless remote controller kit

LCD

driver

MCU

Function

setup

Key

switch

Secondary

battery

Louver

motor

Drain pump

∗ Separately sold parts for ceiling type.

Indoor

fan motor

DC280V

Indoor control P.C. board

DC20V

DC5V

DC12V

Humidifier output

Power circuit

control circuit

Remote controller

communication circuit

MCU

Fan motor

Driver

Outside output

Run

Warning

Defrost

Thermo. ON

COOL

HEAT

FAN

MCU

synchronous

signal input circuit

321

EEPROM

TA sensor

TC sensor

TCJ sensor

Float input

Auto grille

panel

Serial send/

receive circuit

(Follower)

A B

Same as left

∗2

Outdoor unit

(Follower)

A B

Same as left

321

Outdoor unit

∗2

321

Up to 8 units are connectable. ∗1 ∗1 However Max.7 units are connectable in case of mounting network adapter. ∗2 Connection of the weekly timer to the sub remote controller is unavailable. ∗3 In the left system, set the wireless remote controller side as the follower

remote controller when using the main (sub) wired remote controller as the master remote controller.

– 36 –

321

Outdoor unit

7-2. Indoor Controller Block Diagram (High Wall Type)

7-2-1. Connection of Wired Remote Controller

Wired remote controller Weekly timer

Indoor unit #1 Header unit

Receiver and Display P.C. board (MCC-5044)

Display LED

Receiver unit

Louver

motor

Indoor

fan motor

DC280V

Indoor control P.C. board (MCC-1510)

DC20V

DC12V

DC5V

Buzzer

Power circuit

control circuit

DC15V

Display LCD Function setup

Display LED

Remote controller

communication circuit

Central control

remote controller

(Sold separately)

U3 U4

Central control

communication circuit

Driver

Outside output

Fan motor

CPU

Driver

Run/

Warning/

Defrost/

Thermo. ON/

COOL/HEAT/

FAN

Key switch

DC5V

Power circuit

Sold separately Sold separately

Remote controller

communication circuit

synchronous

signal input circuit

CPU

H8/3039

CN2

CN1

∗2

Display

LCD

DC5V

Powe r circuit

EEPROM

TA sensor

TC sensor

TCJ sensor

Wireless remote

signal setting

(A/B)

Serial send/

receive circuit

LCD driver

CPU

Secondary

battery

Follower unit

Function setup

Key switch

the left

Same as

the left

ABA

Same as

Max. 8 units are connectable. ∗1 ∗1 When group combination, wired remote controller shall be

connected to the follower indoor unit. ∗2 Weekly timer is not connectable to the simple remote controller.

– 37 –

SL2L1

Outdoor unit

Outdoor

unit

Outdoor

unit

7-2-2. Connection of Wireless Remote Controller

Central control

remote controller

Indoor unit #1 Header unit

Receiver and Display P.C. board (MCC-5044)

Display LED

Receiver unit

Louver

motor

Indoor

fan motor

DC280V

Indoor control P.C. board (MCC-1510)

DC20V

DC12V

DC5V

Buzzer

Power circuit

control circuit

DC15V

(Sold separately)

U3 U4

Central control

communication circuit

Driver

Fan motor

Driver

Outside output

Run/

Warning/

Defrost/

Thermo. ON/

COOL/HEAT/

FAN

Remote controller

communication circuit

CPU

H8/3039

synchronous

signal input circuit

EEPROM

TA sensor

TC sensor

TCJ sensor

Wireless remote

signal setting

(A/B)

Serial send/

receive circuit

Follower unit

the left

321

Same as

the left

ABA

Same as

Max. 8 units are connectable. ∗1 ∗1 When group combination, wired remote controller shall be

connected to the follower indoor unit.

– 38 –

SL2L1

Outdoor unit

Outdoor

unit

Outdoor

unit

7-3. Control Specifications (4-Way Air Discharge Cassette Type / Under Ceiling Type)

No.

When power supply is reset

Operation mode selection

Item

Outline of specifications

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

guished and the control is selected according to the distinguished result.

2) Setting of indoor fan speed and existence of air direction adjustment

Based on EEPROM data, select setting of the indoor fan speed and the existence of air direction adjustment.

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

Remote controller

command

STOP

FAN

COOL

DRY

HEAT

AUTO

Air conditioner stops.

Fan operation

Cooling operation

Dry operation

Heating operation

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

• The operation is performed as shown in the following figure according to Ta value at the first time only. (In the range of Ts +

Control outline

α –1 < Ta < Ts + α + 1, Cooling

thermo. OFF (Fan)/Setup air volume operation continues.)

Remarks

Fan speed (rpm)/ Air direction adjustment

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

Room temp. control

Cooling

1.8 [1.0]

Ts +

F˚ [˚C]

–1.8 [–1.0]

•

α is corrected according to the outside temperature.

75.2°F (24°C) > To ≥ 64.4°F (18°C)

Outside temp.

No To

To ≥ 75.2°F (24°C)

To < 64.4°F (18°C)

To error

operation

Cooling thermo. OFF (Fan)

• Setup air volume

Heating operation

Correction value (

–1K

+1K

αα

α)

αα

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

Wired type

Wireless type

COOL/DRY

64°F [18°C] to 84°F [29°C]

64°F [18°C] to 86°F [30°C]

64°F [18°C] to 84°F [29°C]

61°F [16°C] to 86°F [30°C]

HEAT

K = deg

AUTO

64°F [18°C] to 84°F [29°C]

63°F [17°C] to 80°F [27°C]

– 39 –

No.

Room temp. control (Continued)

Automatic capacity control

(GA control)

Item

Outline of specifications

2) Using the CODE No. 06, the setup temperature in heating operation can be corrected.

SET DATA

Setup temp.

correction

0246

+0°F +3.6°F +7.2°F +10.8°F

(+0°C) (+2°C) (+4°C) (+6°C)

Setting at shipment

SET DATA 2

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

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

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

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

Counts of detection of 90 seconds before

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

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

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

4) Dry operation The frequency correction control is same as those of the

cooling operation. However the maximum frequency is limited to approxi-

mately “S6”.

Note) When LOW is set up, the maximum frequency is

limited to approximately “SB”.

Remarks

Shift of suction temperature in heating operation

Automatic cooling/heating control

1) The judgment of selecting COOL/HEAT is carried out as shown below. When +2.7°F (+1.5°C) exceeds against Tsh 10 minutes and after thermo. OFF, heating operation (Thermo. OFF) exchanges to cooling operation. Description in the parentheses shows an example of cooling ON/OFF.

Tsc: Setup temp. in

cooling operation

Tsh: Setup temp. in

heating operation + temp. correction of room temp. control

Ta ˚F [˚C]

+2.7 [+1.5]

Tsc or Tsh

–2.7 [–1.5]

Cooling

(Cooling ON)

(Cooling OFF)

Heating

When –2.7°F (–1.5°C) lowers against Tsc 10 minutes and after thermo. OFF, cooling operation (Thermo. OFF) exchanges to heating operation.

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

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

– 40 –

No.

Fan speed control

Item

Outline of specifications

1) Operation with (HH), (H), (L) or [AUTO] mode is carried

out by the command from the remote controller.

2) When the fan speed mode [AUTO] is selected, the fan

speed varies by the difference between Ta and Ts.

<COOL>

Remarks

HH > H+ > H > L+ > L > UL

Ta ˚F [˚C]

+5.4 [+3.0]

+4.5 [+2.5]

+3.6 [+2.0]

+2.7 [+1.5]

+1.8 [+1.0]

+0.9 [+0.5]

Tsc

–0.9 [–0.5]

HH (HH)

H+ (HH)

H (HH)

L+ (H+)

L (H)

L (L+)

• Controlling operation in case when thermo of remote

controller works is same as a case when thermo of the body works.

• If the fan speed has been changed once, it is not changed

for 3 minutes. However when the air volume is exchanged, the fan speed changes.

• When cooling operation has started, select a downward

slope for the fan speed, that is, the high position.

• If the temperature is just on the difference boundary, the

fan speed does not change.

• Mode in the parentheses indicates one in automatic

cooling operation.

<HEAT>

Ta ˚F [˚C]

(–0.9) –1.8 [(–0.5) –1.0]

(0) Tsh

(+0.9) +1.8 [(+0.5) +1.0]

(+1.8) +3.6 [(+1.0) +2.0]

(+2.7) +5.4 [(+1.5) +3.0]

(+3.6) +7.2 [(+2.0) +4.0]

L (L+)

L+ (H)

H (H+)

H+ (HH)

HH (HH)

Value in the parentheses indicates one when thermostat of the remote controller works.

Value without parentheses indicates one when thermostat of the body works.

• If the fan speed has been changed once, it is not changed

for 1 minute. However when the fan speed exchanged, the fan speed changes.

• When heating operation has started, select an upward

slope for the fan speed, that is, the high position.

• If the temperature is just on the difference boundary, the

fan speed does not change.

• Mode in the parentheses indicates one in automatic

heating operation.

• In Tc ≥ 140°F (60°C), the fan speed increases by 1 step.

Tc: Indoor heat

exchanger sensor temperature

– 41 –

No.

Fan speed control (Continued)

Item

Outline of specifications

CODE No.

[5d]

SW501 (1)/(2)

Tap

F1 F2

F4 F5 F6 F7 F8 F9

FA FB FC FD

Standard Type 1 Type 3 Type 6

0136

OFF/OFF ON/OFF OFF/ON ON/ON

HEAT COOL HEAT COOL HEAT COOL HEAT COOL

HH HH

H+ H+, H H+, H

H+

HH H

HH H L+ L+

H+ H+ L L

HL+

HL+L

L+ L

UL UL UL UL

<4-Way Air Discharge Cassette Type>

Tap

FA FB FC FD

SP180 SP240 SP300 SP360, 420

Revolution speed (rpm)

610 630 700 700 560 600 680 680 510 540 670 670 460 470 650 660 410 460 630 650 400 450 620 640 380 420 560 570 360 390 500 500 350 380 490 490 340 360 460 470 330 330 400 430 320 320 400 420 250 250 300 300

Tap

FA FB FC FD

SP180 SP240 SP300 SP360, 420

Revolution speed (rpm)

1120 1140 1240 1300 1100 1100 1200 1240 1020 1060 1140 1200 990 1020 1080 1160 950 970 1040 1120 930 960 1000 1080 880 920 960 1040 840 900 930 990 820 880 900 960 800 850 870 950 780 810 830 890 760 790 800 860 550 560 590 590

HH HH HH HH

H+, H H+, H

L+, L L+, L

Remarks

Selection of high ceiling type

CODE No.: [5d] or selection of high ceiling on P.C. board SW501

3) In heating operation, the mode changes to [UL] if thermostat is turned off.

4) If Ta ≥ 77°F (25°C) when heating operation has started and when defrost opera-

tion has been cleared, the air conditioner operates with (H) mode or higher mode for 1 minute after Tc entered in E zone of cool air discharge preventive control (No. 7).

5) In automatic cooling/heating operation, the revolution frequency of (HH) is set larger than that in the standard cooling/heating operation.

˚F [˚C]

116.6 [47]

F5 → F4

However the revolution frequency is restricted in the automatic heating operation as shown in the following figure.

107.6 [42]

6) Self-clean operation (4-Way Discharge Cassette Type only) When performing self-clean operation after stopping the cooling operation, the

mode becomes 210 rpm.

– 42 –

However only when the high ceiling selection is set to [Standard]

[Self-clean

] is

displayed.

No.

Cool air discharge

Item

preventive control

Freeze preventive control (Low temperature release)

Outline of specifications

1) In heating operation, the indoor fan is controlled based on the detected temperature of Tc sensor or Tcj sensor. As shown below, the upper limit of the revolution frequency is restricted.

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

In defrost operation, the control value of Tc is shifted by 42.8°F (6°C).

Tc, Tcj

˚F [˚C]

89.6 [32]

86.0 [30]

82.4 [28]

78.8 [26]

68.0 [20]

60.8 [16]

OFF

E zone

D zone

C zone B zone

A zone

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

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

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

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

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

If the commanded frequency becomes S0 because the operation continues in [J] zone, the return temperature A is raised from 41°F (5°C) to

53.6°F (12°C) until [ I ] zone is detected and the indoor fan operates with [L] mode.

Remarks

In D and E zones, the priority is given to air volume selection setup of remote controller.

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

Tcj:

Indoor heat exchanger sensor temperature

˚F [˚C]

41 [5]

35.6 [2] J

In heating operation, the freeze-preventive control works if 4-way valve is not exchanged and the following conditions are satisfied. (However the temperature for J zone dashing control is changed from 35.6°F (2°C) to 23°F (–5°C.))

• When

or R is established 5 minutes after

activation.

Tcn ≤ Tc (n – 1) – 5

Tcn < Tc (n – 1) – 1 and Tcn ≤ Ta < 41°F (5°C)

– 43 –

Tcn:

Tc temperature when 5 minutes elapsed after activation

Tc (n – 1):

Tc temperature at start time

No.

High-temp. release control

Item

Outline of specifications

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

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

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

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

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

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

Setup at shipment

Control temp. °F (°C)

132.8 (56) (129.2 (54)) 125.6 (52) (125.6 (52))

Tc, Tcj

˚F [˚C]

Remarks

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

Drain pump control

After-heat elimination

NOTE:

When the operation has started or when Tc or Tcj < 86°F (30°C) at start of the operation or after operation start, temperature is controlled between values in parentheses of A and B.

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

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

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

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

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

Check code [P10]

is displayed.

– 44 –

E-box

No.

Louver control: In case of 4-way Discharge Cassette type

Item

Outline of specifications

1) Louver position setup

• When the louver position is changed, the position moves necessarily to downward discharge position once to return to the set position.

The louver position can be set up in the following operation range.

•

In cooling/dry operation In heating/fan operation

• In group twin/triple operation, the louver positions can be set up collectively or individually.

2) Swing setup

• [SWING] is displayed and the following display is repeated.

In all operations

(Repeats)

• In group twin operation, the louver positions can be set up collectively or individually.

3) When the unit stopped or the warning was output, the louver is automatically set to full closed position.

4) When PRE-HEAT

(Heating ready) is displayed (Heating operation started or defrost operation is performed), heating thermo is off or self-cleaning is performed, the louver is automatically set to horizontal discharge position.

∗ The louver which air direction is individually set or the locked

louver closes fully when the unit stops and the louver is automatically set to horizontal discharge position when PRE-HEAT

(Heating ready) is displayed, heating thermo is

off or self-cleaning is performed.

Remarks

The louver position at horizontal discharge position at under SP240 differs from that at over SP300.

The swinging louver moves usually up to the ceiling side from the louver position of the set time.

<<Individual air direction setup>>

• Pushing

UNIT LOUVER

Louver select button enables every discharge

port to set up the air direction.

• In case of no input (key operation) for approx. 5 seconds during setting of individual air direction (during displaying of louver No. on the remote controller screen), the remote controller screen returns to the normal display screen.

• For the air direction illustration during normal operation, the air direction of the least No. among the louvers which are block-set is displayed.

• While individual air direction is being set, the remote controller operation (Illustration of air direction) and operation of the real machine are linked.

• When selecting a case, pushed or louver No. is not

UNIT LOUVER

Louver select button is not

[02]

displayed, the air directions of all the louvers are collectively set up.

E-box

Setup from the remote controller without

UNIT LOUVER

button is unavailable.

For the setup operation, refer to “How to set louver lock” of Section “10. SETUP AT

LOCAL SITE AND OTHERS”.

(Page 116 to 130)

[01][03]

Refrigerant pipe Drain pipe

[04]

– 45 –

No.

Louver control (Continued): In case of 4-way Discharge Cassette type

Item

Outline of specifications

<<Selection of Swing mode>>

• For the Swing mode, the following three types of modes are selectable and settable by keeping Swing/Direction

SWING/FIX

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

Standard (4 pieces: same phase) swing

→ Data: [0001 (At shipment)] When Swing operation is selected, four louvers align at the

horizontal discharge position and then start the Swing operation at the same time.

Dual swing → Data: [0002]

When operation is selected, the louvers of louver No. [01] and [03] move to the horizontal discharge position, the louvers of louver No. [02] and [04] move to the downward discharge position and then start the Swing operation at the same time.

Cycle swing → Data: [0003]

When operation is selected, the louver No. [01] moves to the horizontal discharge position, [03] to the downward discharge position, [02] and [04] to the middle position and then start the Swing operation at the same time.

• Three types of the swing modes can be also selected and set by the SET DATA of CODE No. (DN) [F0].

• In case of selecting the Swing mode, “Dual swing” or “Cycle swing”, the following numerals is displayed at the center of the remote controller screen for approx. 3 seconds

SWING/FIX

when

button was pushed to select [SWING].

(No display for the standard swing)

Remarks

Carry out setting operation during stop of the unit; otherwise the unit stops operation.

For the setting operation, refer to [How to set up type of swing] in Section “10. SETUP AT

LOCAL SITE AND OTHERS”.

(Page 116 to 130)

Flashing showing the Swing mode is not indicated.

Alternate lighting

(0.5 sec.)

Alternate lighting

(0.5 sec.)

Dual swing Cycle swing

<<Louver lock (Louver fix)>>

• For the air direction setup for each discharge port, the louver position can be locked during the normal operation.

• An arbitrary air direction of an arbitrary louver can be registered and set by keeping

UNIT LOUVER

button pushed for

4 seconds or more on the remote controller.

• The louver lock can be set by registering the SET DATA to CODE No. (DN) [F1] to [F4] according to the following table.

CODE No.

Objective louver No.

SET DATA

0000: Release (At shipment)

0001: Horizontal discharge position

0005: Downward discharge position

Carry out setting operation during stop of the unit; otherwise the unit stops operation.

– 46 –

No.

Louver control (Continued): In case of 4-way Discharge Cassette type

Item

Outline of specifications

• If there is the locked louver in the unit, [ ] goes on the remote controller screen.

• While the following controls are performed, the louvers operate even if executing the louver lock.

Control which ignores lock

Q R S T U V

Operation stop

When heating operation started

Heating thermo. OFF

During defrost operation

Initialize operation

Self-clean operation

Objective louver No.

Full-close position

Horizontal discharge position

Full-close position

Horizontal discharge position

• The real louver corresponding to the louver No. displayed on the remote controller screen during setting of louver lock operates swinging.

Remarks

For the setting operation, refer to “10-1-1. How to set louver lock”.

It is position check operation and it does not link with the real louver and air direction setup (Illustration on the remote controller screen).

(For under ceiling type only)

1) Louver position setup

• When the louver position is changed, the position moves necessarily to downward discharge position once to return to the set position.

• The louver position can be set up in the following operation range.

In cooling/dry operation In heating/fan operation

• In group operation, the louver positions can be set up collectively or individually.

2) Swing setup

• The swinging position can be moved in the following operation range.

All modes

• In group operation, the swinging positions can be set up collectively or individually.

3) When the unit stops or when a warning is output, the louver automatically moves downward.

4) While the heating operation is ready, the louver automatically moves upward.

– 47 –

Warning :

A check code is displayed on the remote controller, and the indoor unit stops. (Excluding [F08] and [L31])

No.

HA control

Item

Outline of specifications

1) This control is connected to TV control or remote start/stop I/F, etc, and start/stop are available by HA signal input from the remote position.

2) This control outputs start/stop status to HA output terminal.

3) I/O specifications conform to JEMA regulations.

This control outputs [Operation OFF (STOP) signal] to HA output terminal while self-cleaning works. However selection of [Operation ON (Operating) signal] is possible by changing [0000 (At shipment)] of [CC] to [0001]. In this case, if HA is input during selfclean operation during operation of the air conditioner, the self-clean operation is not performed. (Unit stops.)

CODE No.

(DN)

Remarks

In the group operation, use this control by connecting to either master or follower indoor unit.

Frequency fixed operation (Test run)

Filter sign display (Except wireless type)

∗ It is provided on the

separately sold type TCB-AX21UL.

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

2) Push [ON/OFF] button.

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

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

• During test run operation, the temperature cannot be

adjusted.

• An error is detected as usual.

• A frequency fixed operation is performed.

4) After the test run, push [ON/OFF] button to stop the operation. procedure in Item 1.)

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

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

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

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

(Display in the display part is same as the

Command frequency is approximately [S7]

[FILTER ] goes on.

– 48 –

No.

Central control mode

Item

selection

Outline of specifications

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

2) RBC-AMT32UL

[Last push priority] :

The operation contents can be selected from both remote controller and central controller of the indoor unit side, and the operation is performed with the contents selected at the last.

Remarks

(No display)

Energy-saving control

[Center] :

Start/Stop operation only can be handled on the remote controller at indoor unit side.

[Operation Prohibited] :

It cannot be operated on the remote controller at indoor unit side. (Stop status is held.)

1) Selecting [AUTO] mode enables an energysaving to be operated.

2) The setup temperature is shifted (corrected) in the range not to lose the comfort ability according to input values of various sensors.

3) Data (Input value room temp. Ta, Outside temp. To, Air volume, Indoor heat exchanger sensor temp. Tc) for 20 minutes are taken the average to calculate correction value of the setup temperature.

4) The setup temperature is shifted every 20 minutes, and the shifted range is as follows.

In cooling time: +1.5 to – 1.0K In heating time: –1.5 to +1.0K

[CENTER] goes on.

[CENTER] goes on. In a case of wireless type, the

display lamp does not change. However, contents which can

be operated are same. The status set in

[CENTER]/[Operation Prohibited] mode is notified with the receiving sound “Pi, Pi, Pi, Pi, Pi” (5 times).

Max. frequency cut control

1) This control is operated by selecting [AUTO] operation mode.

2) COOL operation mode: It is controlled according to the following figure if To < 82.4°F (28°C).

˚F [˚C]

Tsc

Normal control

Max. frequency is restricted to approximately the rated cooling frequency

+7.2 [+4]

+5.4 [+3]

3) HEAT operation mode: It is controlled according to the following figure if To > 59°F (15°C).

˚F [˚C]

Tsh

–5.4 [–3]

–7.2 [–4]

Max. frequency is restricted to approximately the rated heating frequency

Normal control

– 49 –

No.

SAVE

DC motor

Self-clean operation

Item

(Dry operation): In case of 4-way Discharge Cassette type

Outline of specifications

Remarks

1) When the fan operation has started, positioning of the stator and the rotor are performed. (Moves slightly with tap sound)

2) The motor operates according to the command from the indoor controller.

Notes)

• When the fan rotates while the air conditioner

stops due to entering of outside air, etc, the air conditioner may operate while the fan motor stops.

• When a fan lock is found, the air conditioner stops,

Check code [P12]

and an error is displayed.

1) When cooling operation mode (AUTO COOL, COOL, DRY) stopped, the following three self-clean operations are performed.

Compressor

ON period

0 to 10 min.

10 to 60 min.

60 min. to

Self-clean

operation period

None

1 hour

2 hours

FA N

Fan (UL)

Drain pump

STOP

Louver

Horizontal discharge

position

Save operation

2) During operation of self-clean,

lights on the wired remote controller screen. However the operation lamp (Green LED) goes off.

3) To stop the self-clean operation, push twice the [ON/OFF] button on the remote controller continuously. (Stop the operation as compressor ON time in the table above: 10 minutes or below.)

4) When the follower unit executes self-clean operation in the group connection, the segment of

is displayed on the wired remote controller screen via master unit.

∗ If self-clean operation is not used, set invalidity

(does not use) of the self-clean operation by changing [0001 (At shipment) of CODE No. (DN) [D3] to [0000].

∗ To erase the

display during operation of self-clean, change CODE No. [D4] from [0000: Display (At shipment)] to [0001: Non-display].

1) Turn on

2) During operation of save operation,

button on the remote controller.

lights

on the wired remote controller.

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

4) The restriction ratio can be set by keeping button pushed for 4 seconds or more on the remote controller.

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

6) The restriction ratio can be set by changing the setup data of CODE No. (DN) [C2] in the range of 50 to 100% (every 1%, Setting at shipment: 75%).

And it is not also on the wireless remote controller.

It is recognized as [STOP] from the remote monitor side.

Carry out setting operation during stop of the unit; otherwise the unit stops operation.

For the setup operation, refer to “How to set contents of save operation” in Sction “10. SETUP AT LOCAL SITE AND OTHERS”. (Page 116 to 130)

– 50 –

No.

46°F (8°C) heating/ Frost protective operation

(4-Way Air Discharge Cassette Type only)

Item

Outline of specifications

1) This functional is intended for the cold latitudes and performs objective heating operation (46°F (8°C) heating operation).

2) This function is valid only for combination with the outdoor units.

3) Using the indoor CODE No. [D1] (1 bit), Valid/Invalid of this function is set up at the customer’s side.

∗ The setup by CODE No. is Invalid [0]/Valid [1] and

Invalid [0] has been set at the shipment.

4) This operation is the heating operation which sets 46°F (8°C) as the setup temperature of the target.

5) This function starts operation by pushing temperature button pushing temperature reached the minimum set temperature.

6) To stop/release this operation, select and execute one from the following operations.

Push button: Heating operation (64°F (18°C)

setting) continues. Push [START/STOP] button: Air conditioner stops.

(Heating 64°F (18°C) operation at the next start) Push

and the operation continues.

7) As the setup temperature is 46°F (8°C) and the human heating is not targeted, the cold air discharge preventive control (Item 7) is made invalid to suppress the intermittent operation.

8) The settings of the air direction and air volume are changeable during this operation.

9) The indoor fan stops to protect the compressor for 2 minutes after start of heating operation (ThermoON) by this function.

during heating operation; besides by

button for 4 seconds or more after

MODE

: Other operation mode is selected

Remarks

In a group connection, if there is even one combination with other unit, “This function is not provided.” is displayed.

The setup temperature jumps from [18] to [8].

23 AUTO restart 1) Object

It restarts the operation automatically after resetting the unexpected stop of power supply such as power failure.

2) Contents After returning from a power failure, the AUTO restart

function reads the operation status from EEPROM and then restarts the operation automatically according to the operation contents.

3) Setup of function exchange by wired remote controller CODE No. (DN): 28

SET DATA

AUTO restart

0000

None

0001

Provided

– 51 –

7-4. Control Specifications (High Wall Type)

No.

When power supply is reset

Operation mode selection

Item

Outline of specifications

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

guished and the control is selected according to the distinguished result.

2) Setting of indoor fan speed and existence of air direction adjustment

Based on EEPROM data, select setting of the indoor fan speed and the existence of air direction adjustment.

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

Remote controller

command

STOP

FAN

COOL

DRY

HEAT

AUTO

Air conditioner stops.

Fan operation

Cooling operation

Dry operation

Heating operation

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

• The operation is performed as shown in the following figure according to Ta value at the first time only. (In the range of Ts +

Control outline

α –1 < Ta < Ts + α + 1, Cooling

thermo. OFF (Fan)/Setup air volume operation continues.)

Remarks

Fan speed (rpm)/ Air direction adjustment

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

Room temp. control

Cooling

1.8 [1.0]

Ts +

F˚ [˚C]

–1.8 [–1.0]

• α is corrected according to the outside temperature.

75.2°F (24°C) > To ≥ 64.4°F (18°C)

Outside temp.

No To

To ≥ 75.2°F (24°C)

To < 64.4°F (18°C)

To error

operation

Cooling thermo. OFF (Fan)

• Setup air volume

Heating operation

Correction value (

–1K

+1K

αα

α)

αα

K = deg

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

COOL/DRY HEAT AUTO

Wired type ∗

Wireless type

64°F [18°C] to 84°F [29°C]

62°F [17°C] to 86°F [30°C]

∗ When use of remote sensor is set (with DN32), even when sensor value is within

the above range in HEAT or AUTO mode, the thermo. sensor turns OFF when Ta sensor value exceeds 95°F (35°C).

– 52 –

No.

Room temp. control (Continued)

Automatic capacity control (GA control)

Item

Outline of specifications

2) Using the CODE No. 06, the setup temperature in heating operation can be corrected.

SET DATA

Setup temp.

correction

0246

+0°F +3.6°F +7.2°F +10.8°F

(+0°C) (+2°C) (+4°C) (+6°C)

Shift of suction temperature in heating operation

Remarks

Setting at shipment

SET DATA 2

• When use of remote controller sensor is set (with DN32),

no correction is performed.

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

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

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

Ta (n) – Ts (n) : Room temp. difference n : Counts of detection Ta (n-1) – Ts (n) : Varied room temp. value n – 1 : Counts of detection of 90 seconds before

3) Heating operation Every 1 minute (60 sec.), the room temperature difference between temperature

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

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

4) Dry operation The frequency correction control is same as those of the cooling operation. However the maximum frequency is limited to approximately “S6”.

Note) When LOW is set up, the maximum frequency is limited to approximately “SB”.

Automatic cooling/heating control

1) The judgment of selecting COOL/HEAT is carried out as shown below. When +2.7°F (+1.5°C) exceeds against Tsh 10 minutes and after thermo.-OFF, heating operation (Thermo. OFF) exchanges to cooling operation.

Description in the parentheses shows an example of cooling ON/OFF.

Tsc: Setup temp. in

cooling operation

Tsh: Setup temp. in

heating operation + temp. correction of room temp. control

Ta ˚F [˚C]

+2.7 [+1.5]

Tsc or Tsh

–2.7 [–1.5]

Cooling

(Cooling ON)

(Cooling OFF)

Heating

When –2.7°F (–1.5°C) lowers against Tsc 10 minutes and after thermo. OFF, cooling operation (Thermo. OFF) exchanges to heating operation.

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

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

– 53 –

No.

Fan speed control

Item

Outline of specifications

1) Operation with (HH), (H), (L) or [AUTO] mode is carried out by the command from the remote controller.

2) When the fan speed mode [AUTO] is selected, the fan speed varies by the difference between Ta and Ts.

<COOL>

Ta ˚F [˚C]

+5.4 [+3.0]

+4.5 [+2.5]

+3.6 [+2.0]

+2.7 [+1.5]

+1.8 [+1.0]

+0.9 [+0.5]

Tsc

–0.9 [–0.5]

HH (HH)

H+ (HH)

H (HH)

L+ (H+)

L (H)

L (L+)

• Controlling operation in case when thermo of remote

controller works is same as a case when thermo of the body works.

• If the fan speed has been changed once, it is not

changed for 3 minutes. However when the air volume is exchanged, the fan speed changes.

• When cooling operation has started, select a downward

slope for the fan speed, that is, the high position.

• If the temperature is just on the difference boundary, the

fan speed does not change.

• Mode in the parentheses indicates one in automatic

cooling operation.

Remarks

HH > H+ > H > L+ > L > UL

Wireless type allows HH, H+, H, L+, L and AUTO.

[HH] [H+] [H] [L+] [L]

<HEAT>

Ta ˚F [˚C]

(–0.9) –1.8 [(–0.5) –1.0]

(0) Tsh

(+0.9) +1.8 [(+0.5) +1.0]

(+1.8) +3.6 [(+1.0) +2.0]

(+2.7) +5.4 [(+1.5) +3.0]

(+3.6) +7.2 [(+2.0) +4.0]

L (L+)

L+ (H)

H (H+)

H+ (HH)

HH (HH)

Value in the parentheses indicates one when thermostat of the remote controller works.

Value without parentheses indicates one when thermostat of the body works.

• If the fan speed has been changed once, it is not

changed for 1 minute. However when the fan speed I exchanged, the fan speed changes.

• When heating operation has started, select an upward

slope for the fan speed, that is, the high position.

• If the temperature is just on the difference boundary, the

fan speed does not change.

• Mode in the parentheses indicates one in automatic

heating operation.

• In Tc ≥ 140°F (60°C), the fan speed increases by 1 step.

Tc: Indoor heat

exchanger sensor temperature

– 54 –

No.

Fan speed control (Continued)

Item

COOL

H+

L+

Outline of specifications

HEAT

H+

L+

SP180

1080

1020

1000

980

940

900

500

Remarks

SP240

1200

1180

1080

1020

980

940

900

500

7 Cool air discharge

preventive control

3) When thermo sensor turns OFF during heating, the fan speed mode becomes UL ( weak).

4) When Ta is 77°F (25°C) or above at the beginning of HEAT operation or when canceling defrost mode, H or HH mode continues for 1 minute from the time when Tc enters zone E. (Following figure.)

5) The HH fan speed for auto cooling/heating is set to a speed higher than that for normal cooling/heating.

However, it varies depending on the temperature difference of Tc during auto heating.

˚F [˚C]

116.6 [47]

HH+

107.6 [42]

1) In heating operation, the indoor fan is controlled based on the detected temperature of Tc sensor or Tcj sensor. As shown below, the upper limit of the revolution frequency is restricted.

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

In defrost operation, the control value of Tc or Tcj is shifted by 42.8°F (6°C).

“PRE-HEAT ” indication

In D and E zones, the priority is given to air volume selection setup of remote controller.

Tc, Tcj

˚F [˚C]

89.6 [32]

86.0 [30]

82.4 [28]

78.8 [26]

68.0 [20]

60.8 [16]

OFF

E zone

D zone

C zone B zone

A zone

– 55 –

No.

Freeze preventive control (Low temperature release)

Item

Outline of specifications

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

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

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

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

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

If the commanded frequency becomes S0 because the operation continues in [J] zone, the return temperature A is raised from 41°F (5°C) to

53.6°F (12°C) until [ I ] zone is detected and the indoor fan operates with [L] mode.

[˚C]

Remarks

Tcj:

Indoor heat exchanger sensor temperature

9 High-temp. release

control

• When

activation.

Q R

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

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

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

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

Setup at shipment

or R is established 5 minutes after

Tcn ≤ Tc (n – 1) – 5 Tcn < Tc (n – 1) – 1 and Tcn ≤ Ta < 41°F (5°C)

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

value by approx. 6Hz every 60 seconds.

Tc, Tcj

˚F [˚C]

Control temp. °F (°C)

132.8 (56) 125.6 (52)

(129.2 (54)) (125.6 (52))

Tcn:

Tc temperature when 5 minutes elapsed after activation

Tc (n – 1):

Tc temperature at start time

NOTE:

When the operation has started or when Tc or Tcj < 86°F (30°C) at start of the operation or after operation start, temperature is controlled between values in parentheses of A and B.

– 56 –

No.

Item

After-heat elimination

Louver control

Outline of specifications

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

1) During the first operation after power on, louver position is controlled automatically according to operation mode (COOL/HEAT).

Remarks

Louver angle: 0° ( full close )

Cooling

45°

Heating

103°

2) When louver position is controlled by remote controller, the unit’s microcomputer memorizes the position for use in the next operation.

∗ The memorized louver position is cleared when power is

turned off, and returns to the state of 1) above.

3) Louver position setting

• Louver position can be set within the range below.

COOL/DRY HEAT/FAN

4) Swing setting

• Louver moves within the range beloW.

Full close

0°

Alarm:

A code number (except F08 and L31) appears on the remote controller and the indoor unit stops.

All operation modes

5) When air conditioner opration stops, louver closes automatically.

It keeps its position in the event of an alarm.

6) Louver tilts upward automatically during preparation for heating.

12 HA control 1) This control is connected to TV control or remote start/stop I/F,

etc, and start/stop are available by HA signal input from the remote position.

2) This control outputs start/stop status to HA output terminal.

3) I/O specifications conform to JEMA regulations.

In the group operation, use this control by connecting to either master or follower indoor unit.

– 57 –

No.

Frequency fixed operation (Test run)

Item

Outline of specifications

1) Push [ON/OFF]

2) Using [SELECT]

button.

MODE

button, set [COOL] or [HEAT] to

the operation mode to drive the air conditioner.

3) Set [HIGH

] to the fan speed.

4) To change the temperature setting, repeat it 6 times to COOL and HEAT operations each.

COOL: [62°F] (17°C) ↔ [64°F] (18°C)

62°F (17°C) → 64°F (18°C) → 62°F (17°C)

→ 64°F (18°C) → 62°F (17°C) → 64°F (18°C) → 62°F (17°C) → (test run) → ON/OFF

HEAT: [86°F] (30°C) ↔ [84°F] (29°C)

86°F (30°C) → 84°F (29°C) → 86°F (30°C)

→ 84°F (29°C) → 86°F (30°C) → 84°F (29°C) → 86°F (30°C) → (test run) → ON/OFF

• Change an operation setting within 3 seconds.

• The error detection is performed as usual.

• The frequency-fixed operation is performed.

5) To finish a test run, push [ON/OFF]

button.

Remarks

Filter sign display (Except wireless type)

∗ It is provided on the

separately sold type TCB-AX21UL.

Central control mode

selection

The operation time of the indoor fan is calculated, the filter reset signal is sent to the remote controller when the specified time (150H) has passed, and it is displayed on LCD.

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

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

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

2) RBC-AMT32UL [Last push priority] :

The operation contents can be selected from both remote controller and central controller of the indoor unit side, and the operation is performed with the contents selected at the last.

[Center] :

Start/Stop operation only can be handled on the remote controller at indoor unit side.

[Operation Prohibited] :

It cannot be operated on the remote controller at indoor unit side. (Stop status is held.)

FILTER [ ] goes on.

(No display)

[CENTER] goes on.

[CENTER] goes on. In a case of wireless

type, the display lamp does not change.

However, contents which can be operated are same.

The status set in [CENTER]/[Operation Prohibited] mode is notified with the receiving sound “Pi, Pi, Pi, Pi, Pi” (5 times).

– 58 –

No.

Power-saving control

Max. frequency cut control

Item

Outline of specifications

1) Power-saving opration is available in the AUTO mode.

2) The set temperature is corrected using various sensor data within the range where comfort is maintained.

3) By using various sensor data including room temp. Ta, outside air temp. To, fan speed, and indoor unit heat exchange sensor temp. Tc, 20 minutes data is averaged to calculate a set temperature correction value.

4) The set temperature is corrected every 20 minutes with the following shift range.

Cooling: +1.5 to –1.0K Heating: –1.5 to +1.0K

1) This control is operated by selecting [AUTO] operation mode.

2) COOL operation mode: It is controlled according to the following figure if To < 82.4°F (28°C).

˚F [˚C]

+7.2 [+4]

+5.4 [+3]

Normal control

Remarks

Tsc

Max. frequency is restricted to approximately the rated cooling frequency

3) HEAT operation mode: It is controlled according to the following figure if To > 59°F (15°C).

˚F [˚C]

Tsh

–5.4 [–3]

–7.2 [–4]

Max. frequency is restricted to approximately the rated heating frequency

Normal control

18 DC motor 1) When the fan operation has started, positioning of the stator

and the rotor are performed. (Moves slightly with tap sound)

2) The motor operates according to the command from the indoor controller.

Notes)

• When the fan rotates while the air conditioner stops due to

entering of outside air, etc, the air conditioner may operate while the fan motor stops.

• When a fan lock is found, the air conditioner stops, and an error

is displayed.

Check code [P12]

– 59 –

No.

SAVE

Save operation (Wired remote controller specific operation)

Auto restart

Item

Outline of specifications

1) Turn on

2) During operation of save operation, remote controller.

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

4) The restriction ratio can be set by keeping pushed for 4 seconds or more on the remote controller.

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

6) The restriction ratio can be set by changing the setup data of CODE No. (DN) [C2] in the range of 50 to 100% (every 1%, Setting at shipment: 75%).

1) Object It restarts the operation automatically after resetting the unexpected stop of power supply such as power failure.

2) Contents After returning from a power failure, the auto restart function reads the operation status from EEPROM and then restarts the operation automatically according to the operation contents.

3) Setup of function exchange by wired remote controller CODE No. (DN): 28

SET DATA

Auto restart

button on the wired remote controller.

lights on the wired

button

0000

None

0001

At shipment

Remarks

Carry out setting operation during stop of the unit; otherwise the unit stops operation.

For the setup operation, refer to “How to set up contents of save operation” of

“10. SETUP AT LOCAL SITE AND OTHERS”.

(Page 131 to 138)

21 46°F (8°C)

heating/ Frost protective operation (Wired remote controller specific operations)

1) This function is intended for the cold latitudes and performs objective heating operation (46°F (8°C) heating operation).

This function is valid only for combination with the outdoor units.

3) Using the indoor CODE No. [D1] (1 bit), Valid/Invalid of this function is set up at the customer’s side.

∗ The setup by CODE No. is Invalid [0]/Valid [1] and Invalid

[0] has been set at the shipment.

4) This operation is the heating operation which sets 46°F (8°C) as the setup temperature of the target.

5) This function starts operation by pushing temperature button

during heating operation; besides by pushing button for 4 seconds or more after temperature reached the minimum set temperature.

6) To stop/release this operation, select and execute one from the following operations.

Push button:

Heating operation (64°F (18°C) setting) continues. Push [START/STOP] button:

Air conditioner stops. (Heating 64°F (18°C) operation at the next start)

Push

MODE

: Other operation mode is selected and the operation continues.

7) As the setup temperature is 46°F (8°C) and the human heating is not targeted, the cold air discharge preventive control (Item 7) is made invalid to suppress the intermittent operation.

8) The settings of the air direction and air volume are changeable during this operation.

9) The indoor fan stops to protect the compressor for 2 minutes after start of heating operation (Thermo-ON) by this function.

In a group connection, if there is even one combination with other unit, “This function is not provided.” is displayed.

The setup temperature jumps from [18] to [8].

– 60 –

No.

Hi POWER operation (Wireless remote controller specific operations)

Item

Outline of specifications

When you push the Hi POWER button during cooling, heating or AUTO, the air conditioner will start the following operation.

• Cooling operation

Performs the cooling operation at +1.8°F (1°C) lower than the setting temperature.

Only when the fan speed before the Hi POWER operation is not high, the fan speed will be increased.

• Heating operation

Performs the heating operation at +3.6°F (2°C) higher than the setting temperature.

Only when the fan speed before the Hi POWER operation is not high, the fan speed will be increased.

Remarks

• [Hi POWER] Display

23 COMFORT SLEEP

operation (Wireless remote controller specific operations)

When you push the COMFORT SLEEP button during cooling, heating or AUTO, the air conditioner will start the following operation.

The fan speed display will indicate AUTO and low speed will be used.

• Cooling operation

In the operation suppression zone, where capacity is kept to the minimum, overcooling is prevented by raising the temperature setting by +1.8°F (1°C) after 1 hour and by +3.6°F (2°C) after 2 hours of operation.

The room temperature is thus regulated between the operation suppression zone and the set temperature.

When the OFF timer is simultaneously set, 1, 3, 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected for OFF timer.

• Heating operation

In the operation suppression zone, where capacity is kept to the minimum, overheating is prevented by lowering the temperature setting by +1.8°F (1°C) after 1 hour and by +3.6°F (2°C) after 2 hours of operation.

The room temperature is thus regulated between the set temperature and the operation suppression zone.

When the OFF timer is simultaneously set, 1, 3, 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected for OFF timer.

•[ ] display

+1.8˚F

[1˚C]

1 hour

Operation starts

Operation suppression zone

+3.6˚F

[2˚C]

2 hours

Set temperature

– 61 –

Set temperature

+1.8˚F

[1˚C]

1 hour

Operation starts

2 hours

+3.6˚F

[2˚C]

Operation suppression zone

No.

PRESET operation (Wireless remote controller specific operations)

Item

Outline of specifications

Start the air conditioner in the operation mode which you want the remote controller to memorize.

1) Push and hold the PRESET button for more than 3 seconds while the display flashes.

The mark is indicated and the setting is memorized.

• If you do not push the PRESET button within 3 seconds or if

you push another button, the memory setting is cancelled.

• Operation modes which can be memorized with the PRESET

button are MODE, Temperatures, FAN, TIMER and Hi POWER.

To operate the air conditioner with the setting memorized by the PRESET button.

1) Push the PRESET button briefly. The setting memorized will be indicated and the air conditioner

operates with regards to the setting.

• The lamp (green) on the display panel of the indoor unit goes

on, and operation starts after approximately 3 minutes.

• Initial setting:

MODE : AUTO Temperature : 71°F (22°C)

Remarks

•[ ] display

(Wireless remote controller specific operation)

SLEEP operation (Wireless remote controller specific operation)

When you push the QUIET button during cooling, heating, fan only or AUTO, the air conditioner will start the following operation.

• The fan speed display will indicate AUTO and low speed will be

used.

When the OFF timer is set, 1, 3, 5 and 9 hours appear by turns every pushing SLEEP button and one of them can be selected for OFF timer.

•[ ] displayQUIET operation

– 62 –

7-5. Indoor Print Circuit Board (4-Way Air Discharge Cassette Type)

<MCC-1570>

Optional output

CN60 (White), DC12

Fan drive

CN32 (White), DC12V

TC sensor

Micro computer operation LED

D501 (Red)

High ceiling select switch

SW501

Louver

CN510 (White),

DC12V

CN101 (Black), DC5V

TA sensor

CN104 (Yellow), DC5V

TCJ sensor

CN102 (Red), DC5V

Filter

CN70 (White), DC5V

Float switch

CN34 (Red), DC12V

EXCT

Drain pump

CN73 (Red), DC5V

CN504 (White), DC12V

Outside error input

CN80 (Green), DC12V

HA (T10)

CN61 (Yellow), DC12V

Sub bus communication LED

D504 (Green)

DC fan return

CN334 (White)

Serial receive LED

D14 (Orange)

Serial send LED

D15 (Green)

Remote controller

CN41 (Blue), DC20V

DC fan output

CN333 (White)

CHK

CN71 (White), DC5V

Main bus communication LED

D503 (Yellow)

Remote controller power supply LED

D403 (Red)

DISP

CN72 (White), DC5V

TCC-LINK adapter

CN50 (White), DC12V, 5V

Optional power supply

CN309 (Yellow), AC230V

Indoor/Outdoor inter-unit wire

CN67 (Black), AC230V

– 63 –

Remarks

Optional connector specifications of indoor P.C. board (MCC-1570)

remote controller (DN [31] = 0000 → 0001)

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

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

Specifications

DC12V

Output (Open collector)

Pin No.

CN32

Connector No.

HA ON/OFF input (J01: YES/NO=Pulse (At shipment from factory) /Static input selection)

ON/OFF input0VRemote controller prohibited input

Permission/Prohibition of remote controller operation stop is performed by input.

Operation ON (Answer back of HA)

Operation output (Open collector)

CN61

Warning output ON

DC12V

Warning output (Open collector)

ON when outdoor unit is defrosted

ON when real thermostat is ON. (Compressor ON)

DC12V

Defrost output (Open collector)

Thermostat ON output (Open collector)

CN60

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

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

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

Cooling output (Open collector)

Heating output (Open collector)

Fan output (Open collector)

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

DC12VNCOutside error input0V0V

CN80

Selection of option error input (Protective operation display of device attached to outside) or

Humidifier setting input (Vaporizing + Drain pump ON)

CN70

Humidifier is set at shipment from factory.

∗ Setting of option error input is performed on the remote controller. (DN [2A] = 0002 → 0001)

This check is used to check indoor operation. (Performs operation of indoor fan “H”, Louver

horizontal and Drain pump ON without communication with outdoor and remote controller)

CN71

Communication is available by indoor unit and remote controller only.

CN72

Demand input

Indoor unit forced thermostat OFF operation

CN73

Function

Fan drive

Option output

FILTER

Option error /

Outside error input

Humidifier setting (∗)

CHK

Operation check

DISP

Exhibition mode

EXCT

Demand

∗ This option is not provided to oversea models.

– 64 –

7-6. Indoor Print Circuit Board (Under Ceiling Type)

<MCC-1402>

Indoor/Outdoor

inter-unit wire

Optional

power supply

Remote controller

power supply LED

Drain pump output

TC sensor

Filter/Option error input EEPROM Connection interface

Microcomputer operation LED

DC fan output

Used for

TCJ sensor

EXCT

Fan output

DC fan return

Float SW

servicing

DISP

CHK

TA sensor Remote controller inter-unit wire

HA (T10)

Optional output

Louver

(Used only for 4-way Air

Discharge Cassette Type,Under ceiling type)

– 65 –

Indoor P.C. board optional connector specifications <MCC-1402>

Function

Option output

Outside error input

Filter option error

Connector

No.

CN60

CN80

CN70

No.

Specifications

DC12V (COM)

Defrost output

Thermo. ON output

Cooling output

Heating output

Fan output

DC12V (COM)

Outside error input

Filter/Option/Humidifier setup input

Remarks

ON during defrost operation of outdoor unit

ON during Real thermo-ON (Comp ON)

ON when operation mode is in cooling system (COOL, DRY, COOL in AUTO cooling/heating)

ON when operation mode is in heating system (HEAT, HEAT in AUTO cooling/heating)

ON during indoor fan ON (Air purifier is used/Interlock cable)

(When continued for 1 minute) Check code “L30” is output and forced operation stops.

Option error input is controlled. (Protective operation for device attached to outside is displayed.)

∗ Setting of option error input is performed from remote

controller. (DN=2A)

CHK Operation check

DISP display mode

EXCT demand

CN71

CN72

CN73

Check mode input

Display mode input

Demand input

Used for operation check of indoor unit. (Commu–nication with outdoor unit or remote controller is not performed, but the specified operation such as indoor fan “H” or drain pump ON is output.)

Display mode enables indoor unit and remote controller to communicate. (When power is turned on)

Forced thermo-OFF operation in indoor unit

– 66 –

7-7. Indoor Print Circuit Board (High Wall Type)

<MCC-1510>

HA (T10) CN61, DC 12V

Option output CN60, DC 12V

CHK CN71, DC 5V

DISP CN72, DC 5V

Outside error input CN80, DC 12V

EXCT CN73, DC 5V

Remote controller power LED D203

TCJ sensor CN102, DC 5V

TC sensor CN101, DC 5V

Microcomputer operation LED D02

EEPROM IC10

Inter-unit wire CN67, AC 200V

Option power supply CN309, AC 200V

Central control CN40, DC ± 5V

TA sensor CN104, DC 5V

Remote controller CN41, DC 20V

Fan drive CN32, DC 12V

Louver CN33, DC 20V

DC fan input/output CN210

Terminator resistor provided/not provided Remote controller A/B switch SW01

Display output/Wireless sensor CN213, DC 5V

– 67 –

High Wall Type P.C. board optional switch/Connector specifications

Function

Terminator resistor provided/Not provided

Remote controller A/B

Fan output

Connector

No.

SW01

CN32

CN61

Pin No.

Bit 1

Bit 2

Specifications

OFF: No terminator resistor, ON: Terminator resistor provided

OFF: Remote controller A ON: Remote controller B

DC12V

Output

Start/Stop input

0V (COM)

Handy prohibition input

Operation output

DC12V (COM)

Alarm output

DC12V (COM)

Defrost output

Thermo-ON output

Remarks

Setup at shipment OFF: No terminator resistor. Only 1 unit is ON during central control by custom only.

Setup at shipment OFF: Remote controller A

Setup at shipment: Linked operation of ON with operation of indoor unit and OFF with stop

* The setup of single operation by FAN button on remote

controller is executed from remote controller. (DN = 31)

HA Start/Stop input (J01: Provided/Not provided = Pulse (At shipment from factory)/Static input switch)

Operation stop of handy remote controller is permitted / prohibited by input.

ON during operation (Answer back of HA)

ON during output of alarm

ON during defrosting of outdoor unit

ON when Real thermo. ON (Comp. ON)

Optional output

Outside error input

CHK

Operation check

DISP

Display mode

EXCT

Demand

CN60

CN80

CN71

CN72

CN73

Cooling output

Heating output

Fan output

DC12V (COM)

Filter/Option/Outside error input

Check mode input

Display mode input

Demand input

ON when operation mode is cooling line (Cool, Dry, Cooing/Heating AUTO cooling)

ON when operation mode is heating line (Heat, Cooling/Heating AUTO heating)

ON when indoor fan is ON

At shipment from factory, the error code “L30” generates and optional error input to stop operation forcedly (DN:2A = 1) is controlled (Display of protection for devices attached to outside) by setup of outside error input (DN:2A = 2) for 1 minute.

Optional error input control is set up on the remote controller.

This check is used for operation check of indoor unit. (The specified operation such as indoor fan “H”, drain pump ON, etc. is executed without communication with outdoor unit or remote controller.)

Display mode, communication is enabled by indoor unit and remote controller only. (When power supply is turned on.)

Timer short (Usual)

Indoor unit forced thermo-OFF operation

– 68 –

8. TROUBLESHOOTING

8-1. Summary of Troubleshooting

1. Before troubleshooting

1) Required tools/instruments

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

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check

a) The following operations are normal.

1. Compressor does not operate.

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

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

• Does not timer operate during fan operation?

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

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

2. Indoor fan does not rotate.

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

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

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

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

• Is not defrost operation performed?

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

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

• Is not 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 wiring to the initial positions?

c) Are connecting wires of indoor unit and remote controller correct?

2. Troubleshooting procedure

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

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

NOTE :

For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer noise is considered except the items to be checked.

If there is any noise source, change the cables of the remote controller to shield cables.

→→

– 69 –

1. Before troubleshooting

1) Required tools/instruments

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

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check

a) The following operations are normal.

1. Compressor does not operate.

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

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

• Does not timer operate during fan operation?

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

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

2. Indoor fan does not rotate.

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

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

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

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

• Is not defrost operation performed?

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

• Is not forced operation performed?

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

• Is not automatic address being set up?

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

b) Did you return the wiring to the initial positions?

c) Are connecting wires 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.

– 70 –

8-2. Troubleshooting (4-Way Air Discharge Cassette Type / Under Ceiling Type)

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

P10

P12

Cause of trouble occurrence

Power 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 header and follower)

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.

– 71 –

Lamp indication

Operation

Alternate flash

Operation

Alternate flash

Operation

Timer Ready

Check code

F01

F02

F10

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 (TO) 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

Operation

Timer Ready

Simultaneous flash

F29

F31

H01

H02

H03

H04

H06

L03

L07

L08

L09

L10

L20

L29

L30

L31

Indoor EEPROM error

Outdoor EEPROM error

Compressor break down Compressor lock Current detection circuit error Outdoor compressor system error ∗1 Case thermostat worked.

⎫ ⎪ ⎬ ⎪ ⎭

Outdoor unit low pressure system error

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

in individual indoor unit. Unsetting of group address

⎫ ⎪ ⎬ ⎪

* If group construction and

⎭

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

setup mode.

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

⎫ ⎪ ⎪ ⎪ ⎬ ⎪ ⎪ ⎪ ⎭

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

– 72 –

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)

– 73 –

– 74 –

8-2-3. Check Code List (Indoor)

: 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

(Indoor unit detected)

Check code indication

TCC-LINK central &

Wired remote controller

E03

E04 E08 E10

E18

F01 F02 F10 F29 L03 L07 L08 L09 L20 L30 P01 P10 P12 P19 P31

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

(Remote controller detected)

Check code indication

Wired remote controller

E01

E02

E09

Sensor lamp indication

Block indication

Operation

Timer Ready Flash

¥ ¥

¥ ¥¥

¥¥ ¥¥ ¥¥ ¥ ¥ ¥ ¥

ll ll

l l l l

¥¡¥ ¥¡¥

¥¥

¥ ¥

Sensor lamp indication

Block indication

Operation

Timer Ready Flash

¥ ¥ ¥

ll ll ll

Representative defective position

Regular communication error between indoor and remote controller

Indoor/Outdoor serial error Duplicated indoor addresses Communication error between indoor MCU Regular communication error between

indoor master and follower units

ALT

Indoor unit, Heat exchanger (TCJ) error

ALT

Indoor unit, Heat exchanger (TC) error

ALT

Indoor unit, Room temp. sensor (TA) error

SIM

Indoor unit, other indoor P.C. board error

SIM

Duplicated setting of indoor group header unit

SIM

There is group cable in individual indoor unit.

SIM

Unset indoor group address

SIM

Unset indoor capacity

SIM

Duplicated central control system address

SIM

Outside error input to indoor unit (Interlock)

ALT

Indoor unit, AC fan error

ALT

Indoor unit, overflow detection

ALT

Indoor unit, DC fan error

ALT

4-way valve system error

ALT

Other indoor unit error

Representative defective position

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

Remote controller communication (Send) error

Duplicated master remote controller

Explanation of error contents

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

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

MCU communication error between main motor and micro computer Regular communication between indoor header and follower units is impossible,

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

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

Indoor group address is unset.

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

Explanation of error contents

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

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

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

Air conditioner operation

Automatic Operation

reset

continuation

¡ × ¡ ×

×× ×× ×× ×× ××

×× ×× ×× ××

¡ × ¡ ×

Air conditioner operation

Automatic Operation

reset

continuation

——

(Central control devices detected)

Check code indication

TCC-LINK central

C05

C06

C12

P30

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

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

Sensor lamp indication

Block indication

Operation

Timer Ready Flash

Is not displayed.

(Common use of

remote controller, etc.)

—

By warning unit

(Above-mentioned)

Representative defective position

Central control system communication (send) error

Central control system communication (receive) error

General-purpose device control interface batched warning

Group follower unit is defective.

Explanation of error contents

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

Signal receiving operation of central control system is impossible. An error on device connected to general-purpose device control interface of exclusive to

TCC-LINK/AI-NET Group follower unit is defective.

(For remote controller, above-mentioned [∗∗∗] details are displayed with unit No.

Air conditioner operation

Automatic Operation

reset

continuation

——

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 fan driving unit operated.

3. Indoor fan locked.

4. Check indoor P.C. board.

1. Check 4-way valve.

2. Check 2-way valve and check valve.

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

4. Check indoor P.C. board.

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

2. Check indoor P.C. board.

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

2. Check indoor P.C. board.

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

2. Check indoor P.C. board.

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

2. Check indoor P.C. board.

1. Check indoor EEPROM. (including socket insertion)

2. Check indoor P.C. board.

1. Check indoor P.C. board.

1. Check remote controller wiring.

2. Check indoor power supply wiring.

3. Check indoor P.C. board.

– 75 –

Error mode detected by remote controller or central controller

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

Judgment and measures

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.

∗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 (U3, U4), and [E01], [E02],

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

– 76 –

Error mode detected by outdoor unit

Operation of diagnostic function

Check code

F04

F06

F07

F12

F15

F08

F13

F31

L10

L29

P07

P15

P19

H01

H02

H03

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 valve 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

Current detection circuit error

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

Displayed when

error is detected

Judgment and measures

1. Check discharge temp. sensor (TD).

2. Check outdoor P.C. board.

1. Check temp. sensor (TE).

2. Check outdoor P.C. board.

1. Check temp. sensor (TL).

2. Check outdoor P.C. board.

1. Check suction temp. sensor (TS).

2. Check outdoor P.C. board.

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

2. Check outdoor P.C. board.

1. Check outside temp. sensor (TO).

2. Check outdoor P.C. board.

1. Check outdoor P.C. board.

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

1. Check outdoor P.C. board.

1. Check screw tightening between PC. Board and heat sink and check radiator grease.

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. (AC208V / 230V ± 10%)

2. Overload operation of refrigerating cycle

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

2. Wiring error of compressor (Open phase)

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

– 77 –

Check code

P03

H04

P04

P05

P20

P22

P26

P29

Operation of diagnostic function

Cause of operation

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

specified value was detected.

Case thermostat operation ∗ Abnormal overheat of compressor

High-pressure SW error

Power 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

Judgment and measures

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.

• Check full-open of service valve.

• Check outdoor fan error.

• Check outdoor fan motor error.

• Check clogging of outdoor PMV.

• Check loading of indoor/outdoor heat exchangers.

• Short-circuit of outdoor discharge/suction air

• Check outdoor P.C. board (I/F) error.

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

• Check miswiring of communication line between indoor and outdoor.

• Check overcharge of refrigerant.

1. Check power supply voltage. (AC208V / 230V ± 10%)

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 Valve).

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. (AC208V / 230V ± 10%)

3. Check outdoor P.C. board.

1. When performing operation while taking-off compressor

wire, P26 error occurs. Check control P.C. board.

2. When performing operation while taking-off compressor

wire, an error does not occur. (Compressor rare short)

1. Check control P.C. board.

– 78 –

8-2-4. Diagnostic Procedure for Each Check Code (Indoor Unit)

Check code [E01 error]

Is inter-unit wire of A and B normal?

YES

Is there no disconnection or

contact error of connector on harness

from terminal block of indoor unit?

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is power supplied to remote controller?

AB terminal: Approx. DC18V

YES

Correct inter-unit wire

of remote controller

Correct connection of connector.

Check circuit wiring.

Check power connection of indoor unit.

(Turn on power again.)

Check indoor P.C. board.

Defect → Replace

[E09 error]

Are 2 remote controllers set

without master unit?

Are 2 master units set in

2 remote controllers?

YES

Correct a header unit/a follower unit.

(Remote controller address connector)

Check remote controller P.C. board.

Defect → Replace

Correct as a header unit

and a follower unit.

Check remote controller P.C. board.

Defect → Replace

– 79 –

[E04 error] <In case of 4-Way Air Discharge Cassette Type>

Does outdoor operate?

YES

Check indoor P.C. board.

Defect → Replace

Is group address setup of remote controller correct?

YES

Are wiring in indoor unit and

1, 2, 3 inter-unit wires correct?

YES

Are wirings of terminal blocks

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

YES

Does D502 (Orange LED) flash

after power supply turned on again?

YES

Check outdoor P.C. board.

Defect → Replace

Check CODE No. [14].

Correct wiring and

inter-unit wires.

Correct wiring of connector

and terminal blocks.

Check indoor P.C. board.

Defect → Replace

– 80 –

[E04 error] <In case of Under Ceiling Type>

Does outdoor unit operate?

YES

Is setup of group address correct?

YES

Are 1, 2, 3 inter-unit wires normal?

YES

Are connections from connectors

of inter-terminal blocks (1, 2, 3) of indoor/outdoor units normal?

YES

Does voltage between 2 and 3

of inter-terminal blocks (1, 2, 3)

of indoor unit vary?∗

YES

∗ As shown in the following figure, perform measurement within 20 seconds after power ON.

Black

White

Inter-terminal block

Check CODE No. [14].

Correct inter-unit wire.

Correct connection of connector.

Check indoor P.C. board (MCC-1402). Defect → Replace

S5277G

Check indoor P.C. board (MCC-1402). Defect → Replace

[E10 error]

Is there no disorder of power supply?

Check indoor control P.C. board.

Defect → Replace

Does case thermo. operate?

Check outdoor P.C. board Defect → Replace

YES

Check/Correct charged refrigerant amount.

Check power supply voltage.

Correct lines.

Check and eliminate noise, etc.

– 81 –

[E18 error]

Is inter-unit wire

of A and B normal?

YES

Is there no disconnection

or contact error of connector

on harness from terminal block

of indoor unit?

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is there no contact error

of indoor/outdoor inter-unit wire

(Signal line) of the main unit?

YES

Correct inter-unit wire

of remote controller.

Correct connection of connector.

Check circuit wiring.

Check power

connection status of indoor unit

(Connect again).

Correct indoor/outdoor inter-unit wire

(Serial signal line).

Check indoor P.C. board.

Defect → Replace

[E08, L03, L07, L08 error]

E08: Duplicated indoor unit No.

L03: There are 2 or more header units in a group control.

L07: There is 1 or more group address [Individual] in a group control. L08: The indoor group address is unset. (11. ADDRESS SETUP)

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

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

[L09 error]

Is not yet capacity setting

of indoor unit set up?

YES

Set capacity data of indoor unit.

(Setup CODE No. (DN)=11)

Check indoor P.C. board.

Defect → Replace

– 82 –

[L30 error]

Are outside devices of

connector CN80 connected?

YES

Do outside devices normally work?

YES

Check cause of operation.

[P30 error] (Central controller)

Is group operation carried out?

YES

Is there check code

on wired remote controller and

simple remote controller?

Check indoor P.C. board.

Defect → Replace

Check outside devices.

Defect → Replace

YES

Check corresponding

indoor unit/outdoor unit.

Check indoor P.C. board.

Defect → Replace

– 83 –

[P10 error]

Is connection of

float switch connector

(Indoor control board CN34)

normal?

YES

Does float switch work?

YES

Does drain pump work?

YES

drain pump turned on? ∗

Is power of

YES

Is circuit wiring normal?

Check and correct wiring

and wire circuit.

NO NO

Are connector pins 1 and 2

at drain pump unit side shorted

(Resistance value 0)?

Correct connection

of connector.

YES

Check the drain pipe, etc.

Replace drain pump.

Check wiring.

∗ Check that voltage of 1-2 pin of 4-way: CN504, Under Ceiling: CN68 on the indoor P.C. board is +12V.

(1 pin is plus (+).)

Replace drain pump

and indoor P.C. board.

Check indoor P.C. board.

Defect → Replace

[F10 error]

Is connection of TA sensor connector

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

YES

Are characteristics of

TA sensor resistance value normal?

Correct connection of connector.

Replace TA sensor.

YES

Check indoor P.C. board.

Defect → Replace

∗ Refer to Characteristics-1.

– 84 –

[P12 error]

Turn off the power.

Is there no connection error or

disconnection on connectors CN333

and CN334 of indoor unit P.C. board?

Remove connectors CN333

and CN334 of indoor unit P.C. board.

Does the fan rotate without trouble when handling the fan with hands?

YES

Are resistance values between phases at fan motor connector

CN333 motor side of

indoor P.C. board correct?

Correct

∗1

• Are not coil windings between  (Red lead) and  (White lead), between between → The resistance should be the resistance value below. SP180, SP240 → Approx. 70 to 100Ω SP300, SP360, SP420 → 4-Way: Approx. 27 to 40Ω, Under Ceiling: Approx. 35 to 50Ω

• Is not grounded between cabinet and

YES

Incorrect

(White lead) and  (Black lead),



(Black lead) and  (Red lead) opened or shorted?



Correct connection

of connector.

Replace indoor fan motor.

, , 

. → It should be 10MΩ or more.

CN333

CN334

Replace indoor fan motor.

fan motor connector CN334 motor side

Is resistance value of

of indoor P.C. board correct?

Correct

Is output of

indoor fan motor position

detection signal correct?

YES

∗2

Resistance value confirmation of the fan motor position detection circuit Is not status between

→ The resistance should be approx. 5k to 20kΩ.

∗3

Confirmation of the fan motor position detection signal

• Using a voltage tester, measure voltage between CN334 under condition that CN333 and CN334 are mounted and the power supply is turned on.

→ When rotating the fan slowly with hands, the pin voltage should shake between 0 and 5V.

• Between

∗2

∗3

Incorrect

and : 5V



Replace indoor fan motor.

(Yellow lead) and  (Pink lead) opened or shorted?



Replace indoor fan motor.

and  on the indoor P.C. board



Check indoor P.C. board.

Defect → Replace

– 85 –

[F02 error]

Is connection of TC sensor connector

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

TC sensor resistance value normal?

[F01 error]

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

YES

Are characteristics of

YES

∗ Refer to Characteristics-2.

Check indoor P.C. board.

Defect → Replace

Correct connection of connector.

Replace TC sensor.

Correct connection of connector.

YES

Are characteristics of

TCJ sensor resistance value normal?

YES

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

Check indoor P.C. board.

Defect → Replace

Replace TCJ sensor.

– 86 –

[E03 error] (Header indoor unit)

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

Check A and B remote controllers.

As communication is impossible, this check code [E03] is not displayed on the remote controller and the central controller. [E01] is displayed on the remote controller.

If these check codes generate during operation, the air conditioner stops.

[F29 error]

This check code indicates a detection error of 4-Way: IC503, Under Ceiling: IC10 non-volatile memory (EEPROM) on the indoor unit P.C. board, which generated during operation of the air conditioner.

Replace the service P.C. board. ∗ When EEPROM was not inserted when power supply turned on or when the EEPROM data read/write

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

(Power ON)

(Approx.

3 minutes)

[SET] is displayed

on remote controller.

(Approx.

1 minute)

[SET]

goes off.

(Repetition)

LED (D02) on indoor unit

P.C. board flashes with

1Hz for approx. 10 seconds.

Reboot (Reset)

[P31 error] (Follower indoor unit)

When the header unit of a group operation detected [E03], [L03], [L07] or [L08] error, the follower unit of the group operation detects [P31 error] and then the unit stops.

There is no display of the check code or alarm history of the remote controller. (In this model, the mode enters in automatic address set mode when the header unit detected [L03], [L07] or [L08] error.)

– 87 –

Temperature sensor Temperature – Resistance value characteristic table

TA, TC, TCJ, TE, TS, TO sensors

Representative value

Temperature

°F (°C)

32 (0)

50 (10)

68 (20)

77 (25)

86 (30)

104 (40)

122 (50)

140 (60)

158 (70)

176 (80)

194 (90)

212 (100)

(Minimum value) (Standard value) (Maximum value)

32.33 33.80 35.30

19.63 20.35 21.09

12.23 12.59 12.95

9.75 10.00 10.25

7.764 7.990 8.218

5.013 5.192 5.375

3.312 3.451 3.594

2.236 2.343 2.454

1.540 1.623 1.709

1.082 1.146 1.213

0.7740 0.8237 0.8761

0.5634 0.6023 0.6434

Resistance value (k

TA, TC, TCJ, TE, TS, TO sensors

ΩΩ

Ω)

ΩΩ

TD, TL sensors

Representative value

Temperature

°F (°C)

32 (0)

50 (10)

68 (20)

77 (25)

86 (30)

104 (40)

122 (50)

140 (60)

158 (70)

176 (80)

194 (90)

212 (100)

(Minimum value) (Standard value) (Maximum value)

150.5 161.3 172.7

92.76 99.05 105.6

58.61 62.36 66.26

47.01 49.93 52.97

37.93 40.22 42.59

25.12 26.55 28.03

17.00 17.92 18.86

11.74 12.34 12.95

8.269 8.668 9.074

5.925 6.195 6.470

4.321 4.507 4.696

3.205 3.336 3.468

Resistance value (k

Ω)

ΩΩ

Resistance (kΩ)

(0)

(10)68(20)86(30)

104 (40)

122

(50)

140 (60)

158

(70)

176

(80)

194

(90)

212

(100)

Temperature ˚F (˚C)

TD, TL sensors

200

150

100

Resistance (kΩ) (122˚F (50˚C) or lower)

(10)68(20)86(30)

104 (40)

122

(50)

140 (60)

158

(70)

176

(80)

194

(90)

212

(100)

Resistance (kΩ) (122˚F (50˚C) or higher)

Temperature ˚F (˚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.

– 88 –

8-3. Troubleshooting (High Wall Type)

8-3-1. 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

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

Ready Timer

No indication at all

Ready Timer

Flash

Ready Timer

Alternate flash

Operation

Flash

Operation

Check code

—

E01

E02

E03

E08

E09

E10

E18

E04

P01

P10

P12

Cause of trouble occurrence

Power 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

⎫ ⎬

Receiving unit

⎭

⎫ ⎪

Miswiring or wire connection error

⎬

between receiving unit and indoor unit

⎪ ⎭

⎫

Setup error

⎬ ⎭

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 follower or between main and sub indoor twin)

Miswiring between indoor unit and outdoor unit or connection erorr (Communication stop between indoor and outdoor units)

Indoor AC fan error

Overflow was detected. Protective device of indoor unit worked.

Indoor DC fan error

⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭

⎫ ⎪ ⎬ ⎪ ⎭

⎫ ⎪

Protective device of

⎬

outdoor unit worked.

⎪ ⎭

∗1

Ready Timer

Alternate flash

Operation

P03

P04

P05

P07

P15

P19

P20

P22

P26

P29

P31

Outdoor unit discharge temp. error Outdoor high pressure system error Protective device of Case thermostat worked outdoor unit worked. Power supply error

Power supply 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)

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

– 89 –

Lamp indication

Check code

Cause of trouble occurrence

Ready Timer

Alternate flash

Ready Timer

Alternate flash

Ready Timer

Simultaneous flash

Ready Timer

Operation

F01

F02

F10

F04

F06

F07

F08

F12

F13

F15

F29

F31

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 (TL, TS, TE) error

Temp. sensor (TD) error

Temp. sensor (TO) error Sensor error of outdoor unit ∗1

Temp. sensor (TS) error

Heat sink sensor (TH) error

Temp. sensor miswiring (TE, TS)

⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭

⎫ ⎪ ⎪ ⎪ ⎪ ⎪ ⎬ ⎪ ⎪ ⎪ ⎪ ⎪ ⎭

Indoor EEPROM error

Outdoor EEPROM error

Simultaneous flash

Ready Timer

Operation

Flash

Ready Timer Operation

Simultaneous flash

Ready Timer

Operation

Simultaneous flash

H01

H02

H03

H04

L03

L07

L08

L09

L10

L20

L29

L30

Compressor break down

Compressor lock

⎫ ⎬

Outdoor compressor system error ∗1

⎭

Current detection circuit error } Power supply, outdoor P.C. board error

Case thermostat worked. }

Duplicated master indoor units

There is indoor unit of group → AUTO address connection in individual indoor unit.

Unsetting of group address

Missed setting

Compressor overheat, outdoor wiring error

⎫ ⎪ ⎬ ⎪

∗ If group construction and address

⎭

are not normal when power supply turned on, automatically goes to address setup mode.

(Unset indoor capacity)

Unset model type (Service board)

Duplicated indoor central addresses

Temp. sensor (TH) error EEPROM error Communication between outdoor MCU Heat sink overheat error Gas leak detection error 4-way valve error

Outside interlock error

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

– 90 –

8-3-2. Others (Other than Check Code)

Lamp indication

Ready Timer

Simultaneous flash

Ready Timer

Alternate flash

Operation

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)

– 91 –

– 92 –

8-3-3. Check Code List (Indoor)

: 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

(Indoor unit detected)

Check code indication

Wired remote controller

E03

E04 E08

E18

F01 F02 F10 F29 L03 L07 L08 L09 L20 L30 P12 P19 P31

² 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.

(Remote controller detected)

Check code indication

Wired remote controller

E01

E02

E09

Sensor lamp indication

Block indication

Ready Timer

ll ll l

l l l

¥ ¥ ¥ ¥

Operation

¥ ¥

¥¥ ¥¥ ¥¥ ¥¥

¥¡¥ ¥¡¥ ¥¥ ¥ ¥

Sensor lamp indication

Block indication

Ready Timer

ll ll ll

l l

¥ ¥

Operation

¥ ¥

Flash

Regular communication error between indoor and remote controller

Indoor/Outdoor serial error Duplicated indoor addresses Regular communication error between

indoor master and follower units

ALT

Indoor unit, Heat exchanger (TCJ) error

ALT

Indoor unit, Heat exchanger (TC) error

ALT

Indoor unit, Room temp. sensor (TA) error

SIM

Indoor unit, other indoor P.C. board error

SIM

Duplicated setting of indoor group master unit

SIM

There is group cable in individual indoor unit.

SIM

Unset indoor group address

SIM

Unset indoor capacity

SIM

Duplicated central control system address

SIM

Outside error input to indoor unit (Interlock)

ALT

Indoor unit, DC fan error

ALT

4-way valve system error

ALT

Other indoor unit error

Flash

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

Remote controller communication (Send) error

Duplicated master remote controller

Representative defective position

Explanation of error contents

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

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

Regular communication between indoor master and follower units is impossible, Communication between twin master (main) and follower (sub) units is impossible.

Open/short was detected on heat exchanger (TCJ). Open/short was detected on heat exchanger (TC). Open/short was detected on room temp. sensor (TA). EEPROM error (Other error may be detected. If no error, automatic address is repeated. There are multiple master units in a group.

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

Indoor group address is unset.

Capacity of indoor unit is unset. Duplicated setting of central control system address Abnormal stop by outside error (CN80) input Indoor DC fan error (Over-current/Lock, etc.) was detected. In heating operation, an error was detected by temp. down of indoor heat exchanger sensor. Follower unit in group cannot operate by warning from [E03/L03/L07/L08] of master unit.

Explanation of error contents

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

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

and follower unit continues operation.)

Air conditioner operation

Automatic Operation

reset

continuation

¡ × ¡ ×

¡ × ¡ × ¡ ×

¡ × ¡ ×

×× ×× ×× ×× ××

×× ××

¡ × ¡ ×

Air conditioner operation

Automatic Operation

reset

continuation

——

(Central control devices detected)

Check code indication

TCC-LINK central

C05

C06

C12

P30

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

Sensor lamp indication

Block indication

Ready Timer

remote controller, etc.)

Operation

Is not displayed.

(Common use of

—

By warning unit

(Above-mentioned)

Flash

Representative defective position

Central control system communication (send) error

Central control system communication (receive) error

General-purpose device control interface batched warning

Group follower unit is defective.

Explanation of error contents

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

Signal receiving operation of central control system is impossible. An error on device connected to general-purpose device control interface of exclusive to

TCC-LINK/AI-NET Group follower unit is defective.

(For remote controller, above-mentioned [∗∗∗] details are displayed with unit No.

Air conditioner operation

Automatic Operation

reset

continuation

——

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

Regular communication error between indoor aster and follower units and

E18

between main and sub units

Coming-off, disconnection or short of indoor heat exchanger temp. sensor

F01

(TCJ)

Coming-off, disconnection or short of indoor heat exchanger temp. sensor

F02

(TC)

Coming-off, disconnection or short of indoor heat exchanger temp. sensor

F10

(TA)

Indoor EEPROM error

F29

• EEPROM access error

Duplicated indoor master unit

L03

There is group wire in individual indoor

L07

unit.

Unset indoor group address

L08

Unset indoor capacity

L09

Abnormal input of outside interlock

L30

Indoor DC fan error

P12

4-way valve system error

• After heating operation has started,

P19

Own unit stops while warning is output

P31

to other indoor units.

Cause of operation

outdoor P.C. board

indoor P.C. board

indoor heat exchangers temp. is down.

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

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. Check remote controller wiring.

2. Check indoor power supply wiring.

3. 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 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. Position detection error

2. Over-current protective circuit of indoor fan driving unit operated.

3. Indoor fan locked.

4. Check indoor P.C. board.

1. Check 4-way valve.

2. Check 2-way valve and check valve.

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

4. Check indoor P.C. board.

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

2. Check indoor P.C. board.

– 93 –

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.

– 94 –

Error mode detected by outdoor unit

Operation of diagnostic function

Check code

Indoor unit

High Wall

F04

F06

F07

F08

F12

F13

F15

F31

H01

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 outside temp. sensor (TO)

Disconnection, short of suction temp. sensor (TS)

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

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

Outdoor P.C. EEPROM error

Compressor break down

∗ Although operation has star ted,

operation frequency decreases and operation stops.

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

Judgment and measures

1. Check discharge temp. sensor (TD).

2. Check outdoor P.C. board.

1. Check temp. sensor (TE).

2. Check outdoor P.C. board.

1. Check temp. sensor (TL).

2. Check outdoor P.C. board.

1. Check outside temp. sensor (TO).

2. Check outdoor P.C. board.

1. Check suction temp. sensor (TS).

2. Check outdoor P.C. board.

1. Check outdoor P.C. board.

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

2. Check outdoor P.C. board.

1. Check outdoor P.C. board.

1. Check power supply voltage. (AC208V/230V ±10V)

2. Overload operation of refrigerating cycle

H02

H03

H04

L10

L29

Compressor lock

∗ Over-current detection after

compressor start-up

Current detection circuit error

Case thermostat operation ∗ Abnor mal overheat of compressor

Unset jumper of service P.C. board

Communication error between outdoor P.C. board MCU

Stop

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

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

2. Wiring error of compressor (Open phase)

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

1. Check 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. Outdoor service P.C. board

Check model type setting jumper wire.

1. Check outdoor P.C. board.

– 95 –

Operation of diagnostic function

Check code

Indoor unit

High Wall

P03

P04

P05

P07

P15

P19

Cause of operation

Discharge temp. error

∗ Discharge temp. (TD) over

specified value was detected.

High pressure system error

Power supply voltage error

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 valve inverse error

∗ After heating operation has star ted,

indoor heat exchanger temp. lowers under the specified temp.

∗ After heating operation has

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

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

Judgment and measures

1. Check refrigerating cycle (Gas leak).

2. Trouble of electronic expansion valve.

3. Check discharge temp. sensor (TD).

1. Freezing cycle overload operation.

2. Check outdoor heat exchange sensor (TE).

3. Check outdoor P.C. board.

4. Check high-pressure switch and circuit.

1. Check power supply voltage. (AC208V/230V ±10V)

1. Check screw tightening between PC. Board and heat sink and check radiator grease.

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).

P20

P22

P26

P29

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

Stop

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

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 Valve).

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. (AC208V/230V ±10V)

3. Check outdoor P.C. board.

1. When performing operation while taking-off compressor wire, P26 error occurs. Check control P.C. board.

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

1. Check control P.C. board.

– 96 –

8-3-4. Diagnostic Procedure for Each Check Code (Indoor Unit)

Check code [E01 error]

Is inter-unit cable of A and B normal?

YES

Is there no disconnection or

contact error of connector on harness

from terminal block of indoor unit?

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is power supplied to remote controller?

AB terminal: Approx. DC18V

YES

Correct inter-unit cable of remote controller

Correct connection of connector.

Check circuit wiring.

Check power connection of indoor unit.

(Turn on power again.)

Check indoor P.C. board (MCC-1570).

Defect → Replace

[E09 error]

[E02 error]

Are 2 remote controllers set

without master unit?

Are 2 header units set in

2 remote controllers?

Communication wires

between wired remote controller and

indoor unit connected properly?

YES

Correct a header unit/a follower unit.

(Remote controller address connector)

Check remote controller P.C. board.

Defect → Replace

Correct as a header unit and a follower unit.

Check remote controller P.C. board.

Defect → Replace

Correct communication wire.

YES

Failure of wired remote controller tranmitter

→ Replace wired remote controller.

– 97 –

[E04 error]

Does outdoor unit work?

YES

Is group address set correctly?

YES

Are L1/L2/S wires normal?

YES

Are connectors from indoor unit

and outdoor unit connected normally?

YES

Is indoor unit switch SW02 setting correct?

Does voltage between indoor unit terminal

L2 and S fluctuate? (0-140V DC)

Bit 1: OFF Bit 2: OFF

YES

• Measure within 20 seconds from power on.

Check CODE No. “14”.

Correct wires.

Correct connector connection.

Correct switch setting

on MCC-1510 P.C. board.

Check MCC-1510 P.C. board.

→ Replace it if necessary.

Black

White

Terminal block

Check indoor unit board.

→ Replace defective board.

[E10 error]

Is 280V DC applied across IPDU

main circuit capacitor?

YES

Is 280V DC supplied to CDB? (CN03)

YES

Is 7V DC supplied to CDB?

Is CN06 – CN800 connection normal?

YES

Is case thermostat sensor connected?

(CN500)

YES

Is case thermostat sensor working?

YES

Check and correct

refrigerant volume.

Replace IPDU.

Correct connector connection.

Check MCC-1510 P.C. board.

→ Replace it if necessary.

Check CDB.

→ Replace it if necessary.

Is there no disorder of power supply?

Check indoor control P.C. board

(MCC-1510).

Defect → Replace

YES

Check power supply voltage.

Correct lines.

Check and eliminate noise, etc.

– 98 –

[E18 error]

Are wired remote controller

inter-unit cable of A and B normal?

YES

Is there no disconnection or

contact error of connector on harness

from terminal block of indoor unit?

Is indoor unit switch SW02 setting corrent?

Bit 1: OFF Bit 2: OFF

YES

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Correct inter-unit cable

of remote controller.

Correct connection of connector.

Check circuit wiring.

Correct switch setting

on MCC-1510 P.C. board.

Check power

connection status of indoor unit

(Connect again).

Is there no contact error

of indoor/outdoor inter-unit cable

(Signal line) of the main unit?

YES

Correct indoor/outdoor inter-unit cable

(Serial signal line).

Check indoor P.C. board

(MCC-1510).

Defect → Replace

[E08, L03, L07, L08 error]

E08: Duplicated indoor unit No.

L03: There are 2 or more master units in a group control.

L07: There is 1 or more group address [Individual] in a group control. L08: The indoor group address is unset. (11. ADDRESS SETUP)

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

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

[L09 error]

Is not yet capacity setting

of indoor unit set up?

YES

Set capacity data of indoor unit.

(Setup CODE No. (DN)=11)

Check indoor P.C. board (MCC-1510).

Defect → Replace

– 99 –

[E09 error]

double wired remote controller?

[E18 error]

Are 2 headers set by

Are A/B wires normal?

YES

Improper harness connection

from indoor unit terminal block?

Is indoor unit switch SW02 setting correct?

Bit 1: OFF Bit 2: OFF

YES

Correct one header/one follower.

(Wired remote controller address connector)

Check wired remote controller board.

→ Replace it if necessary.

Correct wired remote controller wire connection.

Correct connector connection.

Check circuit wiring.

Correct switch setting on MCC-1510 P.C. board.

YES

Group control operation?

YES

Are all indoor units powered ON?

YES

Twin or triple control?

YES

Improper signal connection

between indoor unit and outdoor unit?

YES

Check indoor unit power connection

(Power off and on).

Correct signal wire connection

between indoor unit and outdoor unit.

Check MCC-1510 P.C. board.

→ Replace it if necessary.

– 100 –

Toshiba RAV-SP420UT-UL, RAV-SP360CT-UL, RAV-SP300CT-UL, RAV-SP180CT-UL, RAV-SP240UT-UL User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual