Toshiba RAV-SM456BT-TR, RAV-SM566BT-TR, RAV-SM1606BT-E, RAV-SM806BT-TR, RAV-SM1406BT-TR User Manual

...

FILE NO. A1 1-018

SERVICE MANUAL

SPLIT TYPE

INDOOR UNIT <DIGITAL INVERTER>

Concealed Duct Type

RAV-SM406BT-E RAV-SM406BT-TR RAV-SM456BT-E RAV-SM456BT-TR RAV-SM566BT-E RAV-SM566BT-TR

RAV-SM806BT-E RAV-SM806BT-TR RAV-SM1106BT-E RAV-SM1106BT-TR RAV-SM1406BT-E RAV-SM1406BT-TR

RAV-SM1606BT-E RAV-SM1606BT-TR

R410A

PRINTED IN JAPAN, Feb., 2012 ToMo

NOTE

A direct current motor is adopted for indoor fan motor in the Concealed Duct Standard Type air conditioner. Caused from its characteristics, a current limit works on the direct current motor. When replacing the high-performance filter or when opening the service board, be sure to stop the fan. If an above action is executed during the fan operation, the protective control works to stop the unit operation, and the check code “P12” may be issued. However it is not a trouble. When the desired operation has finished, be sure to reset the system to clear “P12” error code using the leak breaker of the indoor unit. Then push the operation stop button of the remote controller to return to the usual operation.

CONTENTS

Original instruction ......................................................................................... 4

Warning Indications on the Air Conditioner Unit ........................................ 6

Precaution for Safety ...................................................................................... 7

New Refrigerant (R410A) .............................................................................. 14

1. Safety Caution Concerned to New Refrigerant ..................................................... 14

2. Cautions on Installation/Service ............................................................................ 14

3. Pipe Materials .......................................................................................................... 14

1. AIR DUCTING WORK ............................................................................. 16

1-1. Static Pressure Characteristics ....................................................................... 16

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS).................................... 17

3. WIRING DIAGRAM .................................................................................. 19

4. SPECIFICATIONS OF ELECTRICAL PARTS ....................................... 20

5. CONTROL BLOCK DIAGRAM ............................................................... 21

5-1. Indoor Controller Block Diagram..................................................................... 21

5-2. Control Specifications ...................................................................................... 24

5-3. Indoor Print Circuit Board ................................................................................ 34

6. TROUBLESHOOTING ............................................................................ 36

6-1. Summary of Troubleshooting .......................................................................... 36

6-2. Check Code List (Indoor) ................................................................................. 41

6-3. Diagnostic Procedure for Each Check Code (Indoor Unit) ........................... 46

7. REPLACEMENT OF SERVICE P.C. BOARD......................................... 58

7-1. Indoort Unit ....................................................................................................... 58

– 2 –

8. SETUP AT LOCAL SITE AND OTHERS ............................................... 63

8-1. Indoor Unit......................................................................................................... 63

8-2. Setup at Local Site / Others .............................................................................. 73

8-3. How to Set up Central Control Address Number ........................................... 75

9. ADDRESS SETUP .................................................................................. 77

9-1. Address Setup .................................................................................................. 77

9-2. Address Setup & Group Control ..................................................................... 78

9-3. Address Setup (Manual Setting from Remote Controller) ............................. 81

9-4. Confirmation of Indoor Unit No. Position ........................................................ 82

10. DETACHMENTS...................................................................................... 83

11. EXPLODED VIEWS AND PARTS LIST.................................................. 89

11-1. RAV-SM406BT-E, RAV-SM456BT-E, RAV-SM566BT-E .................................... 89

11-2. RAV-SM806BT-E ................................................................................................ 91

11-3. RAV-SM406BT-TR, RAV-SM456BT-TR, RAV-SM566BT-TR ............................. 93

11-4. RAV-SM806BT-TR ............................................................................................. 95

11-5. Electric parts

RAV-SM406BT-E (TR), RAV-SM456BT-E (TR),

RAV-SM566BT-E (TR), RAV-SM806BT-E (TR) .................................................. 97

11-6. RAV-SM1106BT-E, RAV-SM1406BT-E, RAV-SM1606BT-E .............................. 98

11-7. RAV-SM1106BT-TR, RAV-SM1406BT-TR, RAV-SM1606BT-TR ..................... 100

11-8. Electric parts

RAV-SM1106BT-E (TR), RAV-SM1406BT-E (TR), RAV-SM1606BT-E (TR) .... 102

– 3 –

Original instruction

Please read carefully through these instructions that contain important information which complies with the “Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.

Generic Denomination: Air Conditioner

Definition of Qualified Installer or Qualified Service Person

The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person.

When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.

A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the table below.

Agent

Qualified installer (∗1)

Qualified service person (∗1)

Qualifications and knowledge which the agent must have

• The qualified installer is a person who installs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation.

He or she has been trained to install, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations.

• The qualified installer who is allowed to do the electrical work involved in installation, relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

• The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation, relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to refrigerant handling and piping work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

• The qualified installer who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

• The qualified service person is a person who installs, repairs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations.

• The qualified service person who is allowed to do the electrical work involved in installation, repair, relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

• The qualified service person who is allowed to do the refrigerant handling and piping work involved in installation, repair, relocation and removal has the qualifications pertaining to this refrigerant handling

she is a person who has been trained in matters relating to refrigerant handling and piping work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

• The qualified service person who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

and piping work as stipulated by the local laws and regulations, and he or

– 4 –

Definition of Protective Gear

When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing.

In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.

Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries.

Work undertaken

All types of work

Electrical-related work

Work done at heights (50 cm or more)

Transportation of heavy objects

Repair of outdoor unit

Protective gloves “Safety” working clothing

Gloves to provide protection for electricians and from heat Insulating shoes Clothing to provide protection from electric shock

Helmets for use in industry

Shoes with additional protective toe cap

Gloves to provide protection for electricians and from heat

Protective gear worn

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

Explanation

DANGER

WARNING

CAUTION

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.

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

[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.

– 5 –

Warning Indications on the Air Conditioner Unit

[Confirmation of warning label on the main unit]

Confirm that labels are indicated on the specified positions

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

Warning indication

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect all remote electric power supplies before servicing.

WARNING

Moving parts. Do not operate unit with grille removed. Stop the unit before the servicing.

Description

WARNING

ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies

before servicing.

WARNING

Moving parts. Do not operate unit with grille removed. Stop the unit before the servicing.

CA UTION

High temperature parts. You might get burned when removing

this panel.

CA UTION

Do not touch the aluminum fins of the unit. Doing so may result in injury.

CA UTION

BURST HAZARD

Open the service valves before the operation, otherwise there might be the burst.

CAUTION

High temperature parts. You might get burned when removing this panel.

CAUTION

Do not touch the aluminum fins of the unit. Doing so may result in injury.

CAUTION

BURST HAZARD Open the service valves before the operation,

otherwise there might be the burst.

– 6 –

Precaution for Safety

The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.

DANGER

Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker to the OFF position. Otherwise, electric shocks may result.

Before opening the electrical control box cover of the indoor unit or service panel of the outdoor unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts. Only a qualified installer (∗1) or qualified service person (∗1) is allowed to remove the electrical control box cover of the indoor unit or service panel of the outdoor unit and do the work required.

Tur n o ff

breaker.

Electric

shock

hazard

Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuit breaker to the OFF position, and place a "Work in progress" sign on the circuit breaker.

When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF without fail, and place a "Work in progress" sign near the circuit breaker before proceeding with the work.

When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/or service panel of Outdoor Unit inevitably to determine the failure, use gloves to provide protection for electricians, insulating shoes, clothing to provide protection from electric shock and insulating tools. Be careful not to touch the live part. Electric shock may result. Only "Qualified service person" is allowed to do this work.

Before operating the air conditioner after having completed the work, check that the electrical parts box cover of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position. You may receive an electric shock if the power is turned on without first conducting these checks.

Execute

discharge

between

terminals.

Prohibition

Stay on

protection

WARNING

Even if the circuit breaker has been set to the OFF position before the service panel is removed and the electrical parts are repaired, you will still risk receiving an electric shock. For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before proceeding with the repair work. For details on the short-circuiting procedure, refer to the Service Manual. You may receive an electric shock if the voltage stored in the capacitors has not been sufficiently discharged.

Place a "Work in progress" sign near the circuit breaker while the installation, maintenance, repair or removal work is being carried out. There is a danger of electric shocks if the circuit breaker is set to ON by mistake.

When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/or front panel of Outdoor Unit inevitably to determine the failure, put a sign "Do not enter" around the site before the work. Failure to do this may result in third person getting electric shock.

If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, wear insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to avoid touching any live parts. You may receive an electric shock if you fail to heed this warning. Only qualified service person (∗1) is allowed to do this kind of work.

Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions.

Only qualified service person (∗1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems.

General

Only a qualified installer (∗1) or qualified service person (∗1) is allowed to carry out the electrical work of the air conditioner. Under no circumstances must this work be done by an unqualified individual since failure to carry out the work properly may result in electric shocks and/or electrical leaks.

– 7 –

General

Electrical wiring work shall be conducted according to law and regulation in the community and Installation manual. Failure to do so may result in electrocution or short circuit.

To connect the electrical wires, repair the electrical parts or undertake other electrical jobs, wear gloves to provide protection for electricians, insulating shoes and clothing to provide protection from electric shocks. Failure to wear this protective gear may result in electric shocks.

Inside the air conditioner are high-voltage areas and rotating parts. Due to the danger of electric shocks or of your fingers or physical objects becoming trapped in the rotating parts, do not remove the electrical control box cover of the indoor unit or service panel of the outdoor unit. When work involving the removal of these parts is required, contact a qualified installer or a qualified service person.

Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and laws. Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage, smoking and/or a fire.

Only a qualified installer (∗1) or qualified service person (∗1) is allowed to undertake work at heights using a stand of 50 cm or more or to remove the electrical control box cover of the indoor unit to undertake work.

When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in the ladders instructions. Also wear a helmet for use in industry as protective gear to undertake the work.

Before working at heights, put a sign in place so that no-one will approach the work location, before proceeding with the work. Parts and other objects may fall from above, possibly injuring a person below. While carrying out the work, wear a helmet for protection from falling objects.

Before opening the suction board cover, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in injury through contact with the rotation parts. Only a qualified installer ( do the work required.

∗

1) or qualified service person (∗1) is allowed to remove the suction board cover and

Check earth

wires.

Prohibition of

modification.

Do not touch the aluminum fin of the unit. You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective gloves and safety work clothing, and then proceed.

Use forklift to carry in the air conditioner units and use winch or hoist at installation of them.

When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and 'safety' work clothing.

When transporting the air conditioner, do not take hold of the bands around the packing carton. You may injure yourself if the bands should break.

When the first filter comes out without connected to the other one, insert it once more to connectthe two filters together and pull out them as connected. Do not insert hands to take out the second filter. You may injure Yourself.

This air conditioner has passed the pressure test as specified in IEC 60335-2-40 Annex EE.

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.

After completing the repair or relocation work, check that the ground wires are connected properly.

Connect earth wire. (Grounding work) Incomplete grounding causes an electric shock. Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for telephone wires.

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

Use specified

par ts.

Do not bring a child close to the equipment.

When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications given in the Service Manual (or use the parts contained on the parts list in the Service Manual). Use of any parts which do not satisfy the required specifications may give rise to electric shocks,smoking and/or a fire.

If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, place "Keep out" signs around the work site before proceeding. Third-party individuals may enter the work site and receive electric shocks if this warning is not heeded.

– 8 –

Insulating

measures

No fire

Refrigerant

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 performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that coats the pipes may otherwise burn. When repairing the refrigerating cycle, take the following measures. Be attentive to fire around the cycle.

1) When using a gas stove, etc, be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire. Do not use a welder in the closed room.

2) When using it without ventilation, carbon monoxide poisoning may be caused. Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch

3) the inflammables.

The refrigerant used by this air conditioner is the R410A.

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.

Do not use any refrigerant different from the one specified for complement or replacement. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body.

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.

Assembly/

Cabling

Insulator

check

Ventilation

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.

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.

After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 1M

Ω 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.

If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.

– 9 –

Compulsion

Check after

repair

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.

Tighten the flare nut with a torque wrench in the specified manner. Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

Nitrogen gas must be used for the airtight test.

The charge hose must be connected in such a way that it is not slack.

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.

Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and water drainage. Then perform a trial run to check that the air conditioner is running properly.

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.

Do not

operate the

unit with the

valve closed.

Check after

reinstallation

Check the following matters before a test run after repairing piping. Connect the pipes surely and there is no leak of refrigerant. The valve is opened. Running the compressor under condition that the valve closes causes an abnormal high pressure resulted in damage of the parts of the compressor and etc. and moreover if there is leak of refrigerant at connecting section of pipes, the air is suctioned and causes further abnormal high pressure resulted in burst or injury.

Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury, water leakage, noise and/or vibration may result.

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.

When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe. Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in reputing, injury, etc.

When the service panel of the outdoor unit is to be opened in order for the compressor or the area around this part to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel. If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes and other parts will be very hot to the touch. In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant gloves designed to protect electricians.

Cooling check

When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor, inverter or the areas around these parts to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel. If you fail to heed this warning, you will run the risk of burning yourself because the fan motor, reactor, inverter heat sink and other parts will be very hot to the touch. In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant gloves designed to protect electricians.

– 10 –

Installation

Only a qualified installer or service person is allowed to do installation work. Inappropriate installation may result in water leakage, electric shock or fire.

Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.

If the unit is installed in a small room, take appropriate measures to prevent the refrigerant from exceeding the limit concentration even if it leaks. Consult the dealer from whom you purchased the air conditioner when you implement the measures. Accumulation of highly-concentrated refrigerant may cause an oxygen deficiency accident.

Do not install the air conditioner in a location that may be subject to a risk of expire to a combustible gas. If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.

Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure themselves or receive electric shocks if they poke their fingers or other objects into the indoor unit while the air conditioner is running.

Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the local regulations and laws.

Install the circuit breaker where it can be easily accessed by the agent.

Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner, otherwise it may cause imperfect combustion.

When mounting the rails, push them until the 3 latches click.

Insert the filters into the direction which the arrows, carved on the filters, show. (2 filters are identical)

– 11 –

Explanations given to user

• If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed.

Relocation

• Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury, water leakage, noise and/or vibration may result.

• When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe. Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in reputing, injury, etc.

1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

(

Declaration of Conformity

Manufacturer: Toshiba Carrier Corporation

336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN

uthorized Nick Ball

Representative/TCF holder: Toshiba EMEA Engineering Director

Toshiba Carrier UK Ltd. Porsham Close, Belliver Industrial Estate, PLYMOUTH, Devon, PL6 7DB. United Kingdom

Hereby declares that the machinery described below:

Generic Denomination: Air Conditioner

Model/type: RAV-SM406BT-E RAV-SM406BT-TR

RAV-SM456BT-E RAV-SM456BT-TR RAV-SM566BT-E RAV-SM566BT-TR RAV-SM806BT-E RAV-SM806BT-TR RAV-SM1106BT-E RAV-SM1106BT-TR RAV-SM1406BT-E RAV-SM1406BT-TR RAV-SM1606BT-E RAV-SM1606BT-TR

Commercial name: Digital Inverter Series / Super Digital Inverter Series Air Conditioner

Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations transposing into national law.

Complies with the provisions of the following harmonized standard:

EN 378-2: 2008 + A1: 2009

Note: This declaration becomes invalid if technical or operational modifications are introduced without the

manufacturer’s consent.

– 12 –

Specifications

Model

RAV-SM406BT-E RAV-SM456BT-E RAV-SM566BT-E RAV-SM806BT-E RAV-SM1106BT-E RAV-SM1406BT-E RAV-SM1606BT-E RAV-SM406BT-TR RAV-SM456BT-TR RAV-SM566BT-TR RAV-SM806BT-TR RAV-SM1106BT-TR

Sound power level (dBA)

Cooling Heating

∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗

Weight (kg)

23 23 23 30 40 40 40 23 23 23 30 40

RAV-SM1406BT-TR RAV-SM1606BT-TR

: Under 70 dBA

∗

∗ ∗

40 40

– 13 –

New Refrigerant (R410A)

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

1. Safety Caution Concerned to New Refrigerant

The pressure of R410A is high 1.6 times of that of the former refrigerant (R22).

Accompanied with change of refrigerant, the refrigerating oil has been also changed.

Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with new refrigerant during installation work or service work.

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

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

2. Cautions on Installation/Service

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

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

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

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

Use the clean pipes.

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

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

5) R410A refrigerant is azeotropic mixture type refrigerant.

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

3. Pipe Materials

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

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

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

1) Copper pipe

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

When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe without seam” and one with bonded oil amount 40mg/10m or less.

Also do not use crushed, deformed, discolored (especially inside) pipes. (Impurities cause clogging of expansion valves and 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.

– 14 –

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.

Used tool

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

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

Existence of

new equipment

for R410A

Ye s ∗ (Note)

Ye s N o

Ye s Ye s

Ye s N o

R410A

Whether conventional

equipment can be used

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

– 15 –

1. AIR DUCTING WORK

1-1. Static Pressure Characteristics

SM40, SM45, SM56 type SM80 type

160

140

120

Upper limit of

external static

pressure (120 Pa)

Standard air volume: 800 m³/h

Lower limit of external

static pressure (120 Pa)

100

Low

(120 Pa)

External static pressure (Pa)External static pressure (Pa)

Standard filter pressure loss

380 480 580 680 780 880 980

Air Volume (m³/h)

High (120 Pa)

High (100 Pa)

High (80 Pa)

High (65 Pa)

High (50 Pa)

High (40 Pa)

High (30 Pa)

160

140

120

Upper limit of

external static

pressure (120 Pa)

Standard air volume: 1200 m³/h

Lower limit of external

static pressure (120 Pa)

100

Low

(120 Pa)

External static pressure (Pa)

Standard filter pressure loss

570 770670 970870 11701070 13701270 1470

Air Volume (m³/h)

High (120 Pa)

High (100 Pa)

High (80 Pa)

High (65 Pa)

High (50 Pa)

High (40 Pa)

High (30 Pa)

SM110, SM140, SM160 type

160

140

Upper limit of

external static

pressure (120 Pa)

120

100

1000 1200 1400 1600 1800 2000 2200 2400 2600

Standard air volume: 1200 m³/h

Lower limit of external

static pressure (120 Pa)

Standard filter pressure loss

Air Volume (m³/h)

High (120 Pa)

High (100 Pa)

High (80 Pa)

High (65 Pa)

High (50 Pa)

High (40 Pa)

High (30 Pa)

– 16 –

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

RAV-SM406BT

RAV-SM1106BT

∗∗

∗ RAV-SM456BT

∗∗

∗

RAV-SM1406BT

∗∗

∗ RAV-SM566BT

∗∗

∗

RAV-SM1606BT

∗∗

∗ RAV-SM806BT

∗∗

∗

∗∗

∗

∗∗

– 17 –

– 18 –

3. WIRING DIAGRAM

– 19 –

4. SPECIFICATIONS OF ELECTRICAL PARTS

Concealed Duct Type

No. Parts name SpecificationsType

1 Fan motor (SM406BT / SM456BT / SM566BT) Output (Rated) 150W, 220-240VICF-340W150-2

2 Fan motor (SM806BT) Output (Rated) 150W, 220-240VICF-340W150-1

3 Fan motor (SM1106BT / SM1406BT / SM1606BT) Output (Rated) 250W, 220-240VICF-340W250-1

4 Thermo. Sensor (TA-sensor) 10kΩ at 25˚C328mm

5 Heat exchanger sensor (TCJ-sensor) 10kΩ at 25˚CØ6mm, 1000mm

6 Heat exchanger sensor (TC-sensor) 10kΩ at 25˚CØ6mm, 1000mm

7 Float switch FS-0218-102

8 Drain pump motor MDP-1401

9 Reactor 14mH, 4ACH-49-Z-T

– 20 –

5. CONTROL BLOCK DIAGRAM

5-1. Indoor Controller Block Diagram

5-1-1. In Case of Connection of Wired (Simple) Remote Controller

Wired (Simple) heder remote controller (Max. 2 units) Schedule remote controller

Indoor unit #1 (Heder)

Drain pump

Indoor

fan motor

DC280V

Display LCD Function setup

Display LED

Remote controller

communication circuit

Indoor control P.C. board (MCC-1631)

Power circuit

DC20V

DC5V

DC12V

TMP88CH47FG

(TMP88PH47FG)

Fan motor

control circuit

Remote controller

communication circuit

CPU

Driver

External output

Run

Alarm

Defrost

Thermo. ON

COOL

HEAT

FAN

Key switch

DC5V

Power circuit

CPU

H8/36109

synchronous

signal input circuit

CN2

CN1

∗3

EEPROM2

EEPROM1

TA sensor

TC sensor

TCJ sensor

Float input

Serial send/

receive circuit

Display LCD LCD driver

CPU

DC5V

Secondary

battery

(Follower)

A B

Same as left

∗2

Powe r circuit

Function setup

Key switch

(Follower)

A B

Same as left

321

∗2

321

∗ “1:1 model” connection interface

Central remote

controller(Option)

communication circuit

(Option)

P.C. board

(MCC-1440)

TCC-LINK

– 21 –

321

Outdoor unit

Up to 8 units are connectable. ∗1 ∗1 However, if “1:1 model connection interface” is

connected when 2 wired (simple) remote controllers are connected, Max. 7 units are connectable.

∗2 Connect “1:1 model connection interface” to only 1 unit and connect 1 “1:1 model connection interface” to the header unit.

∗3 It is unavailable to connect the Schedule remote controller to the simple wired remote controller.

Outdoor unit

5-1-2. In Case of Connection of Wireless Remote Controller

Indoor unit #1 (Heder)

Wireless remote controller

Receiver P.C. board

Display LED

Drain

pump

Indoor

fan motor

DC280V

Receive circuit

Buzzer

DC5V

Powe r circuit

Indoor control P.C. board (MCC-1631)

DC20V

DC5V

DC12V

TMP88CH47FG

(TVP88PH47FG)

Fan motor

Power circuit

control circuit

Remote controller

communication circuit

Remote controller

communication circuit

CPU

Driver

External output

Run

Alarm

Defrost

Thermo. ON

COOL

HEAT

FAN

Function setup SW

Temporary

operation SW

CPU

H8/36109

synchronous

signal input circuit

EEPROM2

EEPROM1

TA sensor

TC sensor

TCJ sensor

Float input

Serial send/

receive circuit

(Follower)

A B

Same as left

∗2

(Follower)

A B

Same as left

321

∗2

321

∗ “1:1 model” connection interface

(MCC-1440)

communication circuit

Central remote

controller (Option)

(Option)

P.C. board

TCC-LINK

– 22 –

321

Outdoor unit

Up to 8 units are connectable. ∗1 ∗1 However, if “1:1 model connection interface” is

connected when 2 wireless remote controllers are connected, Max. 7 units are connectable.

∗2 Connect “1:1 model connection interface” to only 1 unit and connect 1 “1:1 model connection interface” to the header unit.

Outdoor unit

5-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller

Indoor unit #1 (Heder)

Receive

circuit

Buzzer

DC5V

Powe r

circuit

Display LED

CPU

Remote controller

communication circuit

Receiver P.C. board

Function setup SW

Temporary

operation SW

Wired (Simple) heder remote controller

communication circuit

(Max. 2 units)

Display

LCD

Display

LED

Remote controller

ABAB

CPU

Function

setup

Key

switch

DC5V

Powe r

circuit

CN2

CN1

∗3

Schedule remote controllerWireless remote controller

Display

LCD

DC5V

Powe r circuit

LCD

driver

CPU

Function

setup

Key

switch

Secondary

battery

Drain pump

Indoor

fan motor

DC280V

Indoor control P.C. board (MCC-1631)

Power circuit

DC20V

DC5V

DC12V

TVP88CH47FG

(TMP88PH47FG)

control circuit

Remote controller

communication circuit

CPU

Fan motor

Driver

External output

Run

Alarm

Defrost

Thermo. ON

COOL

HEAT

FAN

CPU

H8/36109

synchronous

signal input circuit

321

EEPROM2

EEPROM1

TA sensor

TC sensor

TCJ sensor

Float input

Serial send/

receive circuit

(Follower)

A B

Same as left

∗2

Outdoor unit

(Follower)

A B

Same as left

321

Outdoor unit

∗2

321

∗ “1:1 model” connection interface

(MCC-1440)

Central remote

controller (Option)

communication circuit

(Option)

P.C. board

TCC-LINK

– 23 –

321

Outdoor unit

Up to 8 units are connectable. ∗1 ∗1 However, if “1:1 model connection interface” is

connected, Max. 7 units are connectable. ∗2 Connect “1:1 model connection interface” to only

1 unit and connect 1 “1:1 model connection interface” to the header unit.

∗3 It is unavailable to connect the Schedule remote controller to the simple wired remote controller.

5-2. Control Specifications

No.

When power supply is reset

Operation mode selection

Item

Outline of specifications

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

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

• 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

Air conditioner stops.

Fan operation

Cooling operation

Dry operation

Heating operation

α –1 < Ta < Ts + α + 1, Cooling

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

Remarks

Fan speed (rpm)

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

Room temp. control

Cooling

1.0

Ta˚C Ts +

•

α is corrected according to the outside temperature.

–1.0

Outside temp.

No To

To ≥ 24°C

24°C > To ≥ 18°C

To < 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 ( °C )

Wired type

Wireless type

COOL/DRY

18°C to 29°C

17°C to 30°C

HEAT

18°C to 29°C

17°C to 30°C

K = deg

AUTO

18°C to 29°C

17°C to 30°C

– 24 –

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°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 +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

+1.5

–1.5

Cooling

(Cooling ON)

(Cooling OFF)

Heating

Ta ˚C

Tsc or Tsh

When –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.

– 25 –

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 ˚C

+3.0

+2.5

+2.0

+1.5

+1.0

+0.5

Tsc

–0.5

HH (HH)

H+ (HH)

H (HH)

L+ (H+)

L (H)

L (L+)

• Controlling operation in case when thermostat of remote

controller works is same as a case when thermostat 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 ˚ C

(–0.5) –1.0

(0) Tsh

(+0.5) +1.0

(+1.0) +2.0

(+1.5) +3.0

(+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 ≥ 60°C, the fan speed increases by 1 step.

Tc: Indoor heat

exchanger sensor temperature

– 26 –

No.

Fan speed control (Continued)

Item

Outline of specifications

HEAT

HH H+

L+

40Pa

0000

OFF/ON

COOL

HH H+

30Pa

0001

ON/OFF

HEAT

COOL

H+

L+

H+

L+

65Pa

0002

—

HEAT

COOL

H+

L+

50Pa

0003

OFF/ON

HEAT

COOL

L+

H+

L+

80Pa

0004

—

HEAT

COOL

H+

L+

CODE No.

[5d]

SW501(1)/(2)

Tap

F1 F2 F3 F4 F5 F6 F7 F8 F9 FA

FB FC FD

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

4) If Ta ≥ 25°C when heating operation has started and when defrost operation 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) Self-clean operation When performing self-clean operation after stopping the

cooling operation, the mode becomes 310 rpm.

Remarks

HEAT

HH H+

L+

100Pa

0005

—

COOL

HH H+

L+

120Pa

0006

ON/ON

HEAT

HH H+

L+

[Self-clean ] is displayed.

COOL

HH H+

L+

Cool air discharge preventive control

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

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

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

Tc, Tcj

˚C

20 16

OFF

E zone

D zone

C zone B zone

A zone

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.

– 27 –

No.

Freeze preventive control (Low temperature release)

Item

Outline of specifications

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

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

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

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

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

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

˚C

Remarks

Tcj:

Indoor heat exchanger sensor temperature

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

• When

activation.

c d

or d is established 5 minutes after

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

Tcn:

Tc temperature when 5 minutes elapsed after activation

Tc (n – 1):

Tc temperature at start time

– 28 –

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.

Remarks

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

Drain pump control

Setup at shipment

Control temp. °C

56 (54) 52 (52)

Tc, Tcj

˚C

NOTE:

When the operation has started or when Tc or Tcj < 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.

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]

After-heat elimination

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

– 29 –

No.

Frequency fixed operation (Test run)

Item

Outline of specifications

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 ad-

justed.

• 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. (Display in the display part is same as the procedure in Item 1.)

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

1) When TEMPORARY button is pushed for 10 seconds or more, “Pi!” sound is heard and the operation changes to test run. After approx. 3 minutes, a cooling operation starts forcedly.

Check cool air starts blowing. If the operation does not start, check wiring again.

2) To stop a test operation, push TEMPORARY button once again (Approx. 1 second).

Check wiring / piping of the indoor and outdoor units in test run.

Remarks

Command frequency is approximately [S7]

TEMPORARY button

13 1) The operation time of the indoor fan is calculated, the filter

(Except wireless type)

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.

– 30 –

[FILTER ] goes on.Filter sign display

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