Toshiba MMD-AP0186BHP1-E, MMD-AP0126BHP1-E, MMD-AP0246BHP1-E, MMD-AP0276BHP1-E, MMD-AP0306BHP1-E Service Manual

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SERVICE MANUAL

AIR-CONDITIONER

MULTI TYPE

INDOOR UNIT

< Concealed Duct Standard Type >

FILE NO. SVM-16043

MMD-AP0076BHP1-E MMD-AP0096BHP1-E MMD-AP0126BHP1-E MMD-AP0156BHP1-E MMD-AP0186BHP1-E

MMD-AP0246BHP1-E MMD-AP0276BHP1-E MMD-AP0306BHP1-E MMD-AP0366BHP1-E MMD-AP0486BHP1-E MMD-AP0566BHP1-E

MMD-AP0076BHP1-TR

MMD-AP0096BH

MMD-AP0126BHP1-TR MMD-AP0156BHP1-TR MMD-AP0186BHP1-TR

MMD-AP02 MMD-AP0276BHP1-TR MMD-AP0306BHP1-TR MMD-AP0366BHP1-TR MMD-AP0486BHP1-TR MMD-AP0566BHP1-TR

46BHP1-TR

P1-TR

R410A

April

201

CONTENTS

PRECAUTIONS FOR SAFETY ................................................................................ 6

1. SPECIFICATIONS .................................................................................................. 13

2. AIR DUCTING WORK............................................................................................. 15

3. CONSTRUCTION VIEWS (EXTERNAL VIEWS).................................................... 17

4. WIRING DIAGRAMS............................................................................................... 19

5. PARTS RATING...................................................................................................... 20

6. REFRIGERANT CYCLE DIAGRAM ....................................................................... 21

7. CONTROL OUTLINE.............................................................................................. 22

8. APPLIED CONTROL AND FUNCTIONS

(INCLUDING CIRCUIT CONFIGURATION) .......................................................... 28

8-1. Indoor controller block diagram ........................................................................................ 28

8-1-1. In Case of Connection of Wired (Simple) Remote Controller ............................. 28

8-1-2. In Case of Connection of Wireless Remote Controller ....................................... 29

8-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote

Controller ................................................................................................................ 30

8-2. Indoor Print Circuit Board MCC-1631 ...............

Optional connector specifications of indoor P.C. board................................................. 32

8-3.

8-4. Test operation of indoor unit .............................................................................................33

8-5. Method to set indoor unit function DN code .................................................................... 34

8-6. Applied control of indoor unit ........................................................................................... 37

9. TROUBLESHOOTING............................................................................................ 53

9-1. Overview .............................................................................................................................. 53

9-2. Troubleshooting method ....................................................................................................54

9-3. Troubleshooting based on information displayed on remote controller ....................... 60

9-4. Check codes displayed on remote controller and SMMS outdoor unit

(7-segment display on I/F board) and locations to be checked .................................... 65

9-5. Sensor characteristics ....................................................................................................... 84

10. P.C. BOARD EXCHANGE PROCEDURES.......................................................... 85

10-1. Replacement of indoor P.C. boards................................................................................. 85

11. DETACHMENTS................................................................................................... 91

12. EXPLODED VIEWS AND PARTS LIST ............................................................... 98

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

– 2 –

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 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

Qualified installer

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.

Qualified service person

• 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 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 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.

– 3 –

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]

Indication 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.

– 4 –

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 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.

CAUTION

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

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.

CAUTION

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

CAUTION

Do not touch the aluminium 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.

CAUTION

Do not climb onto the fan guard.

Doing so may result in injury.

CAUTION

Do not touch the aluminium 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.

CAUTION

Do not climb onto the fan guard.

Doing so may result in injury.

– 5 –

PRECAUTIONS 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 for both the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result.

Before opening the electrical 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 intake grille of the indoor unit or service panel of the outdoor unit and do the work required.

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 (*1) or qualified service person (*1) is allowed to remove the suction board

Tu r n o f f

braeaker

Electric

shock hazard

Prohibition

Stay on

protection

cover and do the work required.

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 you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of burning, abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner, do not touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a qualified service person. Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until qualified service person arrives. Continuing to use the air conditioner in the trouble status may cause mechanical problems to escalate or result in electric shocks or other failure.

When you access inside of the service panel to repair electric parts, wait for about five minutes after turning off the breaker. Do not start repairing immediately.Otherwise you may get electric shock by touching terminals of high-voltage capacitors. Natural discharge of the capacitor takes about five minutes.

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.

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.

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.

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.

– 6 –

WARNIG

General

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.

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.

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.

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

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.

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.

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 intake grille 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 ladder’s 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.

When executing address setting, test run, or troubleshooting through the checking window on the electric parts box, put on insulated gloves to provide protection from electric shock. Otherwise you may receive an electric shock.

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.

Do not touch the aluminum fin of the outdoor 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.

Do not climb onto or place objects on top of the outdoor unit. You may fall or the objects may fall off of the outdoor unit and result in injury.

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

When transporting the air conditioner, wear shoes with protective toe caps, protective gloves and other protective 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.

Be sure that a heavy unit (10 kg or heavier) such as a compressor is carried by two persons.

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

Check earth

wires.

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.

Be sure to 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.

– 7 –

Prohibition of

modification.

Use specified

parts.

Do not bring

a child close

to the

equipment.

Insulating measures

No fire

Refrigerant

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

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, put a sign in place so that noone will approach the work location before proceeding with the work. Third-party individuals may enter the work site and receive electric shocks if this warning is not heeded.

Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then apply a watercut 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.

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.

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.

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.

When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to malfunction.

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.

– 8 –

Assembly /

Wiring

Insulator

check

Ventilation

Compulsion

Check after

repair

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 (500 V Megger) to check the resistance is 1 MΩ 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.

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.

Be sure to fix the screws back which have been removed for installation or other purposes.

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 sucked 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.

– 9 –

Cooling check

Installation

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.

Take care not to get burned by compressor pipes or other parts when checking the cooling cycle while running the unit as they get heated while running. Be sure to put on gloves providing protection for heat.

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.

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.

Be sure to use the company-specified products for the separately purchased parts. Use of nonspecified products may result in fire, electric shock, water leakage or other failure. Have the installation performed by a qualified installer.

Do not supply power from the power terminal block equipped on the outdoor unit to another outdoor unit. Capacity overflow may occur on the terminal block and may result in fire.

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 qualified service person (*1).

If you install the unit 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 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. (Concealed duct type only)

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

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”

– 10 –

Declaration of Conformity

Manufacturer:

TOSHIBA CARRIER (THAILAND) CO., LTD.

144 / 9 Moo 5, Bangkadi Industrial Park, Tivanon Road,

Tambon Bangkadi, Amphur Muang, Pathumthani 12000, Thailand

Authorized Representative / Nick Ball

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: Indoor unit

<Concealed Duct Standard Type> MM

D-AP0076BHP1-E(TR) MMD-AP0126BHP1-E(TR) MMD-AP0186BHP1-E(TR) MMD-AP0276BHP1-E(TR) MMD-AP0366BHP1-E(TR) MMD-AP0566BHP1-E(TR)

MMD-AP0096BHP1-E(TR), MMD-AP0156BHP1-E(TR), MMD-AP0246BHP1-E(TR), MMD-AP0306BHP1-E(TR), MMD-AP0486BHP1-E(TR),

Commercial name: Super Modular Multi System Air Conditioner

Super Heat Recovery Multi System Air Conditioner MiNi-Super Modular Multi System Air Conditioner (MiNi-SMMS series)

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

“Declaration of incorporation of partly completed machinery”

Must not be put into service until the final machinery into which it is to be incorporated has been declared in conformity with the provisions of this Directive, where appropriate.

Complies with the provisions of the following harmonized standard:

EN 378-2: 2008+A2:2012

NOTE

This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer’s consent.

– 11 –

Specifications

Model

MMD-AP0076BHP1-E

MMD-AP0096BHP1-E

MMD-AP0126BHP1-E

MMD-AP0156BHP1-E

MMD-AP0186BHP1-E

MMD-AP0246BHP1-E

MMD-AP0276BHP1-E

MMD-AP0306BHP1-E

MMD-AP0366BHP1-E

MMD-AP0486BHP1-E

MMD-AP0566BHP1-E

MMD-AP0076BHP1-TR

MMD-AP0096BHP1-TR

MMD-AP0126BHP1-TR

MMD-AP0156BHP1-TR

MMD-AP0186BHP1-TR

MMD-AP0246BHP1-TR

MMD-AP0276BHP1-TR

MMD-AP0306BHP1-TR

MMD-AP0366BHP1-TR

MMD-AP0486BHP1-TR

MMD-AP0566BHP1-TR

Sound Pressure level (dBA)

Cooling Heating

∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗

Weight (kg) Main unit

: Under 70 dBA

∗

– 12 –

1. SPECIFICATIONS

Model name

(50Hz)

MMD-AP

0076 0096 0126 0156 0186 0246 0276 0306 0366 0486 0566

∗∗∗∗

BHP1-E(TR)

Cooling/Heating capacity

Electrical

Power supply

(Note 1) (kW)

characteristics

Running current (A)

Power consumption (kW)

Starting current (A)

Appearance

Dimension Height (mm)

Width (mm)

Depth (mm)

Total weight (kg)

Heat exchanger

Soundproof / Heat-insulating meterial

Fan unit

Fan

Standard air flow (m³/h) (Med./Low)

Motor output (W)

External static pressure

(Pa)

(factory setting)

2.2/2.5 2.8/3.2 3.6/4.0 4.5/5.0 5.6/6.3 7.1/8.0 8.0/9.0 9.0/10.0 11.2/12.5 14.0/16.0 16.0/18.0

1phase 50Hz 230V(220V-240V)

0.26 0.29 0.42 0.52

0.038 0.043 0.062 0.077

0.45 0.50 0.73 0.90

0.61 1.07 1.23

0.094 0.172 0.198

1.06 1.85 2.13

Zinc hot dipping steel plate

275

700 1000 1400

750

23 30 40

Finned tube

Polyethlene foam

Centrifugal fan

540

(450/360)

570

(480/390)

800

(660/540)

150

1,200

(990/870)

1,260

(1110/930)

1,920

(1620/1380)

2,100

(1740/1500)

250

30 40 50

30-40-50-65-80-100-120 (7steps)

Remote controller

Standard filter (Long life filter)

Controller

Air filter

Connecting

External static pressure (Pa)

Gas side (mm)

9.5 12.7 15.9

pipe

Liquid side (mm)

Drain port (mm)

Sound pressure level (Note 2)

(High/Med./Low)

(dB(A))

29/26/23

25(Polyvinyl chloride tube)

30/26/23 33/29/25 36/31/27 40/36/33

9.56.4

Note 1 : The cooling capacities and electrical characteristics are measured under the conditions specified by

JIS B 8615 based on the reference piping. The reference piping consists of 5 m of main piping and 2.5 m of branch piping connected with 0 m height.

Note 2 : The sound level are measured in an anechoic chamber in accordance with JIS B 8616.

Normally, the values measured in the actual operating environment become larger than the indicated valves due to the effects of external sound.

Note : Rated conditions Cooling: Indoor air temperature 27˚C DB/19˚C WB, Outdoor air temperature 35˚C DB

Heating: Indoor air temperature 20˚C DB, Outdoor air temperature 7˚C DB/6˚C WB

– 13 –

Model name

(60Hz)

MMD-AP∗∗∗∗BHP1-E(TR)

0076 0096 0126 0156 0186 0246 0276 0306 0366 0486 0566

Cooling/Heating capacity

Electrical

Power supply

(Note 1) (kW)

characteristics

Running current (A)

Power consumption (kW)

Starting current (A)

Appearance

Dimension Height (mm)

Width (mm)

Depth (mm)

Total weight (kg)

Heat exchanger

Soundproof / Heat-insulating meterial

Fan unit

Fan

Standard air flow (m³/h) (Med./Low)

Motor output (W)

External static pressure

(Pa)

(factory setting)

2.2/2.5 2.8/3.2 3.6/4.0 4.5/5.0 5.6/6.3 7.1/8.0 8.0/9.0 9.0/10.0 11.2/12.5 14.0/16.0 16.0/18.0

1phase 60Hz 220V

0.27 0.31 0.44 0.55

0.038 0.043 0.062 0.077

0.47 0.54 0.76 0.95

0.64 1.12 1.29

0.094 0.172 0.198

1.11 1.94 2.23

Zinc hot dipping steel plate

275

700 1000 1400

750

23 30 40

Finned tube

Polyethlene foam

Centrifugal fan

540

(450/360)

570

(480/390)

800

(660/540)

150

1,200

(990/870)

1,260

(1110/930)

1,920

(1620/1380)

2,100

(1740/1500)

250

30 40 50

30-40-50-65-80-100-120 (7steps)

Remote controller

Standard filter (Long life filter)

Controller

Air filter

Connecting

External static pressure (Pa)

Gas side (mm)

9.5 12.7 15.9

pipe

Liquid side (mm)

Drain port (mm)

Sound pressure level (Note 2)

(High/Med./Low)

(dB(A))

29/26/23

25(Polyvinyl chloride tube)

30/26/23 33/29/25 36/31/27 40/36/33

9.56.4

Note 1 : The cooling capacities and electrical characteristics are measured under the conditions specified by

JIS B 8615 based on the reference piping. The reference piping consists of 5 m of main piping and 2.5 m of branch piping connected with 0 m height.

Note 2 : The sound level are measured in an anechoic chamber in accordance with JIS B 8616.

Normally, the values measured in the actual operating environment become larger than the indicated valves due to the effects of external sound.

Note : Rated conditions Cooling: Indoor air temperature 27˚C DB/19˚C WB, Outdoor air temperature 35˚C DB

Heating: Indoor air temperature 20˚C DB, Outdoor air temperature 7˚C DB/6˚C WB

– 14 –

2. AIR DUCTING WORK

AP0076 type AP0096, AP0126 type

Standard air volume: 540 m3/h

External static pressure(Pa)

External static pressure (Pa)

140

120

100

Upper limit of

external static

external static pessure(120Pa)

pressure (120 Pa)

Low (120 Pa)

Low tap(120Pa)

Standard air volume : 540m3/h

Lower limit of

Lower limit of external static

external static

pressure (120 Pa)

pessure(120Pa)

High tap(120Pa)

High tap(100Pa)

High tap (100 Pa)

High tap (80 Pa)

High tap(80Pa)

High tap (65 Pa)

High tap(65Pa)

High tap (50 Pa)

High tap(50Pa)

High tap(40Pa)

High tap (40 Pa)

High tap (30 Pa)

High tap(30Pa)

Standard filter pressure

Standard filter pressure loss

loss

High tap (120 Pa)

140

120

100

Low (120 Pa)

Low tap(120Pa)

External static pressure(Pa)

External static pressure (Pa)

Upper limit of

external static

external static pessure(120Pa)

pressure (120 Pa)

Standard air volume: 570 m3/h

Standard air volume : 570m3/h

Lower limit of

Lower limit of external static

external static

pressure (120 Pa)

pessure(120Pa)

High tap (120 Pa)

High tap(120Pa)

High tap (100 Pa)

High tap(100Pa)

High tap (80 Pa)

High tap(80Pa)

High tap (65 Pa)

High tap(65Pa)

High tap(50Pa)

High tap (50 Pa)

High tap(40Pa)

High tap (40 Pa)

High tap (30 Pa)

High tap(30Pa)

Standard filter

pressure loss

200 300 400 500 600 700 800

Air volume(m3/h)

Air Volume (m3/h)

200 300 400 500 600 700 800

AP0156, AP0186 type AP0246, AP0276 type

Standard air volume : 800m3/h

140

Upper limit of

Upper limit of external

external static

static pressure (120 Pa)

pessure(120Pa)

120

100

Low (120 Pa)

Low tap(120Pa)

External static pressure(Pa)

External static pressure (Pa)

380480580680780880980

Air Volume (m3/h)

Standard air volume: 800 m3/h

Lower limit of

Lower limit of external

external static

static pressure (120 Pa)

pessure(120Pa)

Air volume(m3/h)

High tap (120 Pa)

High tap(120Pa)

High tap (100 Pa)

High tap(100Pa)

High tap (80 Pa)

High tap(80Pa)

High tap

High tap(65Pa)

(65 Pa)

High tap (50 Pa)

High tap(50Pa)

High tap

(40 Pa)

(40P

High tap

(30 Pa)

(30Pa)

Standard filter

Standard filter pressure loss

pressure loss

140

Upper limit of external

Upper limit of

static pressure

external static

(120 Pa)

pessure(120Pa)

120

100

Low tap(120Pa)

Low (120 Pa)

External static pressure (Pa)

570 770 970 1170 1370

Air volume(m3/h)

Air Volume (m3/h)

Standard air volume: 1200 m3/h

Air Volume (m3/h)

Lower limit of

Lower limit of external

external static

static pressure

pessure(120Pa)

(120 Pa)

High tap (120 Pa)

High tap(120Pa)

High tap

High tap(100Pa)

(100 Pa)

High tap

High tap(80Pa)

(80 Pa)

High tap

High tap(65Pa)

(65 Pa)

High tap (50 Pa)

igh tap(50Pa)

High tap(40Pa)

High tap (40 Pa)

High tap

High tap(30Pa)

(30 Pa)

Standard filter

pressure loss

– 15 –

AP0306 type AP0366 type

Standard air volume: 1260 m3/h

140

120

Upper limit of

external static

pressure (120 Pa)

pessure(120Pa)

Standard air volume : 1260m3/h

Lower limit of

external static

pressure (120 Pa)

pessure(120Pa)

100

Low (120 Pa)

Low tap(120Pa)

External static pressure(Pa)

External static pressure (Pa)

630 830 1030 1230 143 0

High tap (120 Pa)

High tap(120Pa)

High tap

(100 Pa)

(100Pa)

High tap (80 Pa)

High tap(80Pa)

High tap

(65Pa)

(65 Pa)

High tap (50 Pa)

High tap(50Pa)

High tap

(40 Pa)

(40Pa)

High tap

High tap(30Pa)

(30 Pa)

Standard filter

Standard filter pressure loss

pressure loss

140

Upper limit of

external static

pessure(120Pa)

pressure (120 Pa)

120

100

Low tap(120Pa)

Low (120 Pa)

External static pressure(Pa)

External static pressure (Pa)

900 1100 1300 1 500 1700 1900 2100 2300 2500

Air volume(m3/h)

Air Volume (m3/h)

AP0486, AP0566 type

Standard air volume: 2100 m3/h

140

120

Upper limit of

external static

pressure (120 Pa)

pessure(120Pa)

Standard air volume : 2100m3/h

Lower limit of

external static

pessure(120Pa)

pressure (120 Pa)

High tap (120 Pa)

High tap(120Pa)

Standard air volume: 1920 m3/h

Standard air volume : 1920m3/h

Lower limit of

Lower limit of external static

external static

pressure (120 Pa)

pessure(120Pa)

High tap (120 Pa)

High tap(120Pa)

High tap (100 Pa)

High tap(100Pa)

High tap (80 Pa)

High tap(80Pa)

High tap (65 Pa)

High tap(65Pa)

High tap (50 Pa)

High tap(50Pa)

High tap (40 Pa)

High tap(40Pa)

High tap (30 Pa)

High tap(30Pa)

Standard filter

pressure loss

Air volume(m3/h)

Air Volume (m3/h)

100

Low tap(120Pa)

Low (120 Pa)

External static pressure(Pa)

External static pressure (Pa)

Standard filter

pressure loss

1000 1200 1400 1600 1800 2000 2200 2400 2600

Air volume(m3/h)

Air Volume (m3/h)

High tap(100Pa)

High tap (100 Pa)

High tap (80 Pa)

High tap(80Pa)

High tap (65 Pa)

High tap(65Pa)

High tap(50Pa)

High tap(40Pa)

High tap (50 Pa)

High tap (40 Pa)

High tap

(30Pa)

(30 Pa)

– 16 –

3. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

MMD-AP0076BHP1*, AP0096BHP1*, AP0126BHP1*, AP0156BHP1*, AP0186BHP1*

AP0246BHP1*, AP0276BHP1*, AP0306BHP1*, AP0366BHP1*, AP0486BHP1*, AP0566BHP1*

Hanging bolt pitch

650

750

345

187.5

355

415

570

275

180

Hanging bolt pitch B

Main unit dimension A

External dimensions of flange C

70 or more

345 or more

Drain pan / Drain pump check cover

750

650 5050

50 50

∗

113.5

131

236

Electrical control box

Dimension

AP007 ~ 018 type

AP024 ~ 030 type

AP036 ~ 056 type

ABCD

700 765 640 750

1000 1065 940 1050 500

1400 1465 1340 1450 700

Air discharge

100 or more

Check port

450

120

Service space (E for maintenance of air filter)

700

– 17 –

AP007 ~ AP018 type

AP024 ~ AP030 type

235.4

37.5

235.2

659.4

660

959.4

37.5

254

100 100

254

100 100

37.5

100

100100100100

235.4

37.5

100100

100100100100100

960

100100

254

235.2

2727

100100

254

87.5

100

100100

675

100100

87.5

AP036 ~ AP056 type

235.4

37.5

100

100100100

975

100

100100

254

100 100

27 27

37.5

1359.4

100

100100100

100

100100

100

100100100100

100100

37.5

235.2

37.5

100

1360

100100100

100

1375

– 18 –

2727

100100

254

100

100100100100100

37.5

4. WIRING DIAGRAMS

Models : MMD-AP0076BHP1*, AP0096BHP1*, AP0126BHP1*, AP0156BHP1*,

AP0186BHP1*, AP0246BHP1*, AP0276BHP1*, AP0306BHP1*, AP0366BHP1*, AP0486BHP1*, AP0566BHP1*

– 19 –

5. PARTS RATING

Model

Fan motor

Drain pump motor

Float switch

Pulse motor

Pulse motor valve

TA sensor

TC1 sensor

TC2 sensor

TCJ sensor

Model

Fan motor

Drain pump motor

Float switch

Pulse motor

Pulse motor valve

TA sensor

TC1 sensor

TC2 sensor

TCJ sensor

MMD-AP

0076BHP1 0096BHP1 0126BHP1 0156BHP1 0186BHP1

ICF-340W150-2

MDP-1401

FS-1A-31-3

EFM-MD12TF-1

EFM-25YGTCTH-2 EFM-40YGTF-1

Lead wire length: 218 mm

Ø4 size lead wire length: 1000 mm Vinyl tube (Blue)

Ø6 size lead wire length: 1000 mm Vinyl tube (Black)

Ø6 size lead wire length: 1000 mm Vinyl tube (Red)

0246BHP1

0276BHP1 0306BHP1 0366BHP1 0486BHP1

340W150-1 340W250-1

EFM-40YGTF-1 EFM-60YGTCTH-1

Ø4 size lead wire length: 1000 mm Vinyl tube (Blue)

Ø6 size lead wire length: 1000 mm Vinyl tube (Black)

Ø6 size lead wire length: 1000 mm Vinyl tube (Red)

MDP-1401

FS-1A-31-3

EFM-MD12TF-1

Lead wire length: 218 mm

0566BHP1

– 20 –

6. REFRIGERANT CYCLE DIAGRAM

Indoor unit

Gas sideLiquid side

Strainer

Pulse Motor

Valve (PMV)

Sensor

(TC2)

Capillary tube

Strainer

Sensor

(TCJ)

Explanation of functional parts in indoor unit

Functional part name

Pulse Motor Valve

PMV

Temp. Sensor (Connector CN104 (2P): Yellow)

1.TA

2.TC1

3.TC2

4.TCJ

(Connector CN082 (6P): Blue)

1) Controls super heat in cooling operation

2) Controls under cool in heating operation

3) Recovers refrigerant oil in cooling operation

4) Recovers refrigerant oil in heating operation

1) Detects indoor suction temperature

(Connector CN100 (3P):

1) Controls PMV super heat in cooling operation

(Connector CN101 (2P): Black)

1) Controls PMV under cool in heating operation

(Connector CN102 (2P): Red)

1) Controls PMV super heat in cooling operation

Brown)

Heat exchanger

at indoor side

Fan

Sensor

(TA)

Functional outline

Sensor

(TC1)

Fan motor

– 21 –

7. CONTROL OUTLINE

Indoor unit

Control specifications

NO.

Item Specification outline Remarks

Upon power supply reset

1. Identification of outdoor unit When the power supply is reset, the outdoor unit is identified, and control is redirected according to the identification result.

2. Indoor fan speed and air flow direction control availability settings Settings such as indoor fan speed and air flow direction control availability are replaced on the basis of EEPROM data.

3. If power supply reset is performed in the wake of a fault, the check code is cleared. If the abnormality persists after the Start / Stop button on the remote controller is pressed to resume operation, the check code is redisplayed on the remote controller.

Operation selection

Room temp. control

1. The operation mode changes in response to an operation selection command issued via the remote controller.

Remote controller command Control outline

STOP Air conditioner shutdown

FAN Fan operation

COOL Cooling operation

DRY Drying operation

HEAT Heating operation

1. Adjustment range - remote controller temperature setting (°C)

COOL / DRY HEAT

Wired type 18~29 18~29

Wireless type 18~30 16~30

2. In heating operation, the temperature setting may be fine-tuned via the

Ts: Temperature

Ta: Room

Shift in heating suction temperature (not applicable to remote controller thermo operation)

DN code “06”.

SET DATA 0 2 4 6

Temperature setting adjustment +0 ˚C +2 ˚C +4 ˚C +6 ˚C

setting

temperature

Automatic capacity control

Factory default

Model type SET DATA

Floor standing (standard, concealed, cabinet) 0

Other model 2

1. The outdoor unit determines the operational capacities of indoor units according to the difference between Ta and Ts.

Cooling Heating

(˚C)

–1

(˚C)

–1

–2

Ts: Temperature

setting

Ta: Room

temperature

– 22 –

NO. Item Specification outline Remarks

Fan speed control

1. The fan operates in one of the four speed modes of “HIGH (HH)”, “MED

(H)”, “LOW (L)” and “AUTO” on the basis of a command issued via the remote controller. (Concealed duct high static pressure type: HH only)

2. In AUTO fan speed mode, the air speed changes according to the

difference between Ta and Ts.

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 <H> L <L+>

A B C

F G

HH > H+ > H > L+ > L > UL or LL

• Control is identical in remote controller thermo and body thermo operation. Speed modes shown in < > apply to cooling operation under AUTO air conditioner operation mode.

• In AUTO fan speed mode, the fan speed remains the same for 3 minutes each time a speed change occurs.

However, a speed change command issued via the remote controller can override this, and the fan speed changes accordingly.

• At the beginning of cooling operation, a higher speed (steeper downward temperature gradient) is chosen.

• As long as the temperature difference remains on a boundary line, the fan speed stays the same.

Ta (˚C)

(–0.5) –1.0

(0) Tsh

(+0.5) +1.0

(+1.0) +2.0

(+1.5) +3.0

(+2.0) +4.0

Figures inside ( ) applies to remote controller thermo operation. Figures outside ( ) applies to body thermo operation. Speed modes shown in < > apply to heating operation under AUTO air conditioner operation mode.

• In AUTO fan speed mode, the fan speed remains the same for 1 minute each time a speed change occurs. However, a speed change command issued via the remote controller can override this, and the fan speed changes accordingly.

• At the beginning of heating operation, a higher speed (steeper upward temperature gradient) is chosen.

• As long as the temperature difference remains on a boundary line, the fan speed stays the same.

• When TC2 ≥ 60 °C, the fan speed is raised by one step.

3. If the air conditioner goes thermo OFF during heating operation, the fan speed drops down to LL (breeze).

L <L+>

L+ <H>

H <H+>

H+ <HH>

HH <HH>

DN code “32” “0000”: Body thermo “0001”: Remote controller thermo

TC2: Indoor heat exchanger sensor temperature

“HEATING STANDBY

displayed

”

– 23 –

NO. Item Specification outline Remarks

Cold air discharge prevention control

1. In heating operation, the upper limit of the fan tap is set according to the lower of whichever is the higher between TC2 sensor and TCJ sensor temperatures, on the one hand, and TC1 sensor temperature, on the other.

• If the fan continuously operates in zone B for 6 minutes, it automatically moves into zone C.

• During defrosting, the control point is shifted by +6 °C.

TCJ: Indoor heat exchanger sensor temperature

• In zones D and E, priority is given to the remote controller fan

˚C

A zone: OFF B zone: 26˚C or above and

C zone: 28˚C or above and

D zone: 30˚C or above and

E zone: High

below 28˚C breeze

below 30˚C Low

below 32˚C Medium

speed setting.

•In zone A, “HEATING STANDBY is displayed.

”

Freeze prevention control (low temp. release)

1. During cooling, the air conditioner is operated in the manner described below according to the temperature readings of the TC1, TC2 and TCJ sensors.

• If zone J operation is detected for 5 minutes, the air conditioner is forced into thermo OFF.

• In zone K, the timer is put on pause, with the current timer count retained.

• If zone I operation is detected, the timer count is cleared, and the air conditioner returns to normal operation.

• If continuous zone J operation forces the air conditioner into thermo OFF, the indoor fan is operated in breeze mode until it moves into zone I. The control is terminated under the following conditions:

Termination conditions

1) TC1 ≥ 12 °C, TC2 ≥ 12 °C, and TCJ ≥ 12 °C

(˚C)

P1 Q1

TC1

10˚C (5˚C)

0˚C

TC2, TCJ

–10˚C –14˚C

2) Passage of 20 minutes after stoppage

2. During cooling, the air conditioner is operated in the manner described below according to the temperature readings of the TC2 and TCJ sensors.

• If zone M operation is detected for 45 minutes, the air conditioner is forced into thermo OFF.

• In zone N, the timer is put on pause, with the current timer count retained.

• When the air conditioner goes back into zone M, timer count is resumed from the retained value.

TC1: Indoor heat exchanger sensor temperature

(˚C)

P2 Q2

TC2, TCJ

–2.0

• If zone L operation is detected, the timer count is cleared, and the air conditioner returns to normal operation.

Reset conditions

1) TC1 ≥ 12 °C, TC2 ≥ 12 °C and TCJ ≥ 12 °C

2) Passage of 20 minutes after stoppage

– 24 –

* With models

without TC2, TC2 is not part of the control parameters.

NO. Item Specification outline Remarks

Cooling oil (refrigerant) recovery control

Heating refrigerant (oil) recovery control

While the outdoor unit is recovering cooling oil (refrigerant), the indoor units perform the following control tasks: [common for operational (cooling thermo ON / thermo OFF / FAN), as well as nonoperational indoor units]

1) Open the indoor PMV to a certain degree.

2) Engage in recovery control for a specified period of time and return to normal cooling operation at the end of this period upon terminating the control.

3) Operate the drain pump throughout the recovery control period and for about 1 minute after it.

While the outdoor unit is recovering heating refrigerant (oil), the indoor units perform the following control tasks:

1) Open the indoor PMV to a certain degree.

2) Control the indoor fan according to the operation mode.

[Indoor units operating in heating thermo ON / OFF state]

Let the indoor fan continue operating, but turn it off if the temperature of the indoor heat exchanger drops.

[Indoor units operating in FAN mode]

Turn off the indoor fan and display “HEATING STANDBY

remote controller. [Non-operational indoor units]

Keep the indoor fan turned off.

3) Terminate the recovery operation depending on the TC2 temperature reading. The timing of termination is determined by each indoor unit.

4) Operate the indoor fan and drain pump for about 1 minute after the termination of the recovery operation. (Applicable to compact 4-way cassette type and 1- way cassette type)

” on the

• Recovery operation normally takes place roughly every 2 hours.

• The opening position of the indoor PMV depending on the type and capacity of the indoor unit.

• Recovery operation normally takes place roughly every hour.

• The opening position of the indoor PMV depending on the type and capacity of the indoor unit.

Defrosting control

Short intermittent operation

compensation control

Drain pump control

While the outdoor unit is engaged in defrosting control, the indoor units perform the following control tasks:

1) Open the indoor PMV to a certain degree.

2) Control the indoor fan according to the operation mode.

[Indoor units operating in heating thermo ON / OFF state]

Let the indoor fan continue operating for a while, but turn it off as the temperature of the indoor heat exchanger drops.

[Indoor units operating in FAN mode]

Let the indoor fan continue operating.

[Non-operational indoor units]

Keep the indoor fan turned off.

3) As defrosting control comes to an end, it gives way to heating refrigerant (oil) recovery control. (For control details, see “9. Heating refrigerant (oil) recovery control” above.)

1. For 5 minutes after startup, the system is forced to continue operating even if it reaches the thermo OFF region.

2. However, priority is given to cooling / heating selection, operation standby, and protective control, so that there is no overriding of thermo OFF in these cases.

1. During cooling (including DRY operation), the drain pump is operated at all times.

2. If the float switch is activated while the drain pump is in operation, the drain pump continues operating, with the relevant check code displayed.

3. If the float switch is activated while the drain pump is turned off, thermo OFF is forced on the air conditioner, with the drain pump put into operation. If the float switch continues to be activated for about 5 minutes, the drain pump is turned off, with the relevant check code displayed.

• For defrosting commencement conditions, see 5 Control Outline “10. Defrosting control (reverse defrosting method)” in SMMS-i Outdoor Unit Service Manual A10-005 above.

• The opening position of the indoor PMV depending on the type and capacity of the indoor unit.

Check code [P10]

Elimination of

residual heat

1. When the air conditioner is turned off after engaging in heating operation, the indoor fan is operated for about 30 seconds in “breeze” mode.

– 25 –

NO. Item Specification outline Remarks

Filter sign display (not applicable to wireless type)

*Provided in

the separately mounted type, TCB-AX21E.

Operation standby Heating standby

1. The indoor fan’s cumulative hours of operation are counted, and when these exceed the prescribed value (2500H), a filter replacement signal is sent to the remote controller to display a filter sign on it.

2. When a filter reset signal is received from the remote controller, the timer measuring cumulative hours is cleared. If the prescribed hours have been exceeded, the hours count is reset, with the sign on the remote controller display erased.

2500HFilter service life

<Operation standby> .......... Displayed on remote controller

1. When any of the DN codes listed below is displayed

• “P05” - Detection of an open phase in the power supply wiring

• “P10” - Detection of indoor flooding in at least one indoor unit

• “L30” - Detection of an interlock alarm in at least one indoor unit

2. Forced thermo OFF

• “COOL / DRY” operation is unavailable because at least one indoor unit is operating in “HEAT” mode.

• “HEAT” operation is unavailable because at least one indoor unit is operating in “COOL / DRY” mode under priority cooling setting (bit 1 of SW11 on outdoor I/ F P.C. board ON).

3. All indoor units not able to engage in any of the above operations stand by in thermo OFF state.

4. The indoor fan has been turned off because the system is engaged in a heat refrigerant (oil) recovery operation.

<Heating standby> .......... Displayed on remote controller

1. Normal thermo OFF

• During heating, the indoor unit goes thermo OFF as the heating temperature setting is reached.

2. During heating, the fan rotates at a breeze speed (UL or lower) or remains stationary to prevent cold air from being discharged (including defrosting operation).

3.Forced thermo OFF

• “HEAT” operation is unavailable because at least one indoor unit is operating in “COOL / DRY” mode under priority cooling setting (bit 1 of SW11 on outdoor I/ F P.C. board ON).

“FILTER

” displayed

• “OPERATION STANDBY displayed No display provided on wireless remote controller

• “HEATING STANDBY displayed

”

Selection of central control mode

1. The range of operations that can be performed via an indoor unit remote controller can be determined through the setting of the central controller.

2. Setting details

TCC-Link central control

Operation

via TCCLink

Individual

Central 1

Central 2

Central 3

Central 4

(

{

Start / stop

central control

selection

{

× ×

{

: Accessible × : Inaccessible)

{

Operation on RBC-AMT32E

Operation

mode

selection

Timer

setting

{

× × ×

{

× ×

{

Temperature

setting

{

× ×

{

Fan speed

setting

{

Air flow

direction

setting

{

RBC-

AMT32E

display

“CENTRAL

CONTROL

PROGRESS”

• In the case of a wired remote controller, “CENTRAL CONTROL IN PROGRESS

” is displayed (lit up) while in central control mode.

• The display blinks when a control function

inaccessible to a remote controller is chosen.

• A wireless remote controller has the same set of control functions, although there is no display. When a control operation is performed via a wireless remote controller while in central control mode, a peep sound alert (5 times) is provided.

– 26 –

NO. Item Specification outline Remarks

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.

• If static pressure of the used duct does not match with the setup value of

static pressure, which was decided in the static pressure setting code No. [5D], the air conditioner may stop or an error code may be displayed.

SAVE

Power saving mode

1. Push the

2. The “

button on the remote controller

“ segment lights up on the wired remote controller display.

3. The requirement capacity ratio is limited to approximately 75 %.

4. If the power saving operation is enabled, the settings are retained

when the operation is stopped, when the mode is changed, or when the power is reset. The power saving operation will be enabled the next time the operation starts.

Frequency fixed operation (Test run)

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. (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.)

Check code “P12”

The power saving operation cannot be set by the wireless remote controller or wired remote controller of AMT31E or older.

Command frequency is approximately [S7]

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.

TEMPORARY button

– 27 –

8. APPLIED CONTROL AND FUNCTIONS

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

Outdoor unit

NU1U2

U1 U2

321

Up to 8 units are connectable.

∗1 It is unavailable to connect the Schedule remote controller to the simple wired remote controller.

Same as left

(Follower)

A B

Same as left

(Follower)

A B

DC5V

Indoor unit #1 (Heder)

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

Drain pump

PMV

Indoor

fan motor

CPU

H8/36109

Driver

DC12V

DC5V

DC20V

External output

Remote controller

communication circuit

Display LCD Function setup

Key switch

CN2

CN1

∗1

CPU

Display LED

Display LCD LCD driver

CPU

Remote controller

communication circuit

Function setup

Key switch

Power circuit

DC280V

Fan motor

control circuit

CPU

TMP88CH47FG

(TMP88PH47FG)

EEPROM1

EEPROM2

TA sensor

TC1 sensor

TC2 sensor

TCJ sensor

Float input

Run

Alarm

Defrost

Thermo. ON

COOL HEAT

FAN

BUS

comunication circuit

synchronous

signal input circuit

Power supply

∅

, 220-240V, 50Hz

∅

, 220V, 60Hz

Powe r

circuit

Secondary

battery

Outdoor unit

321

(INCLUDING CIRCUIT CONFIGURATION)

8-1. Indoor controller block diagram

8-1-1. In Case of Connection of Wired (Simple) Remote Controller

– 28 –

8-1-2. In Case of Connection of Wireless Remote Controller

Indoor unit #1 (Heder)

Wireless remote controller

Receiver P.C. board

Display LED

Drain

pump

PMV

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

TC1 sensor

TC2 sensor

TCJ sensor

Float input

BUS

comunication circuit

(Follower)

A B

Same as left

(Follower)

A B

Same as left

321

Power supply

∅

, 220-240V, 50Hz

∅

, 220V, 60Hz

– 29 –

NU1U2

U1 U2

Outdoor unit

Up to 8 units are connectable.

Outdoor unit

8-1-3. 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

∗1

Schedule remote controllerWireless remote controller

Display

LCD

DC5V

Powe r circuit

LCD

driver

CPU

Function

setup

Key

switch

Secondary

battery

Drain pump

PMV

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

comunication circuit

synchronous

signal input circuit

NU1U2

Outdoor unit

(Follower)

A B

EEPROM2

EEPROM1

TA sensor

TC1 sensor

TC2 sensor

TCJ sensor

Float input

BUS

Up to 8 units are connectable.

∗1 It is unavailable to connect the Schedule remote

U1 U2

controller to the simple wired remote controller.

Same as left

Outdoor unit

(Follower)

321

A B

Same as left

321

Outdoor unit

Power supply

∅

, 220-240V, 50Hz

∅

– 30 –

, 220V, 60Hz

8-2. Indoor Print Circuit Board

MCC-1631 <Concealed duct standard type>

Float SW

FS unit output

EEPROM

TC2 sensor

TC1 sensor

TCJ sensor

TA sensor

Microcomputer 

operation LED

Used for

CHK

servicing

DISP

EXCT

Fan output

Optional output

HA(T10)Filter/Option 

DC fan return PMV output Drain pump output

DC fan output

error input

Remote controller 

inter-unit wire

Remote controller 

power supply LED

Reactor

– 31 –

Output 

power supply

Power supply

8-3. Optional connector specifications of indoor P.C. board

Function Connector No. Pin No. Specification Remarks

Fan output

Optional output

External error input

CHK Operation check

DISP Display mode

EXCT Demand

CN32

CN61

CN60

CN80

CN71

CN72

CN73

1 DC12 V Factory default setting: ON when indoor unit in

Output

Start / stop input Start / stop input for HA (J01: In place / Removed =

2 0 V (COM)

Remote controller disabling

input

4 In-operation output ON during operation (HA answerback signal)

5 DC12 V (COM)

6 Alarm output ON while alarm ON

1 DC12 V (COM)

2 Defrosting output ON while outdoor unit defrosted

3 Thermostat ON output ON while real thermostat ON (compressor ON)

Cooling output

Heating output

Fan output ON while indoor fan ON

1 DC12 V (COM) Generates test code L30 and automatically shuts

2 DC12 V (COM)

3 External error input

1 Check mode input Used for indoor operation check (prescribed

0 V

1 Display mode input Product display mode - Communication just between

0 V

1 Demand input Imposes thermostat OFF on indoor unit

20 V

operation and OFF when indoor unit at rest * Fan can be operated on its own by pressing FAN button on remote controller (DN = 31)

Pulse input (factory default) / Step input)

Enables / disables start / stop control via remote controller

ON while air conditioner in cooling or related operation (COOL, DRY or cooling under AUTO mode)

ON while air conditioner in heating operation (HEAT or heating under AUTO mode)

(air cleaner in use or via interlock wiring)

down air conditioner (only if condition persists for 1 minute)

operational status output, such as indoor fan "H" or drain pump ON, to be generated without communication with outdoor unit or remote controller)

indoor unit and remote controller enabled (upon turning on of power) Timer short-circuited out (always)

– 32 –

8-4. Test operation of indoor unit

Check function for operation of indoor unit (Functions at indoor unit side)

This function is provided to check the operation of the indoor unit singly without communication with the remote controller or the outdoor unit. This function can be used regardless of operation or stop of the system. However, if using this function for a long time, a trouble of the equipment may be caused. Limit using this function within several minutes.

[How to operate]

1) Short-circuit CHK pin (CN71 on the indoor P.C. board). The operation mode differs according to the indoor unit status in that time. Normal time: Both float SW and fan motor are normal. Abnormal time: Either one of float SW or fan motor is abnormal.

2) Restricted to the normal time, if short-circuiting DISP pin (CN72 on the indoor P.C. board) in addition to short-circuit of CHK pin (CN71 on the indoor P.C. board), the minimum opening degree (30 pls) can be set to the indoor PMV only. When open DISP pin, the maximum opening degree (1500 pls) can be obtained again.

[How to clear]

Open CHK pin. While the system is operating, it stops once but automatically returns to operation after several minutes.

Short-circuit of CHK pin

Fan motor

Indoor PMV (*)

Louver

Drain pump

Communication

P.C. board LED

Normal time

DISP pin open

(H)

Max. opening degree (1500 pls)

Horizontal

All ignored

Lights

DISP pin short circuit

(H)

Min. opening degree (30 pls)

Horizontal

All ignored

Lights

Abnormal time

Stop

Min. opening degree (30 pls)

Immediate stop

All ignored

Flashes

• To exchange the indoor PMV coil, set the indoor PMV to Max. opening degree.

• For the detailed positions of CHK pin (CN71 on indoor P.C. board) and DISP pin (CN72 on indoor P.C. board), refer to the indoor P.C. board.

– 33 –

8-5. Method to set indoor unit function DN code

(When performing this task, be sure to use a wired remote controller.)

<Procedure> To be performed only when system at rest

1 Push the

SET

+ CL buttons simultaneously and hold for at

least 4 seconds.

The unit No. displayed first is the address of the header indoor unit in group control. Then the fan and louver of the selected indoor unit move.

2 Each time the

UNIT LOUVER

button (left side of the button) is pressed, one of the indoor unit Nos. under group control is displayed in turn. Then the fan and louver of the selected indoor unit move.

3 Use the

TEMP.

button to select the CODE No. (DN code) of the

desired function.

4 Use the

associated with the selected function.

5 Push the

button to select the desired SET DATA

SET

button. (The display changes from flashing to

steady.)

• To change the selected indoor unit, go back to step 2.

• To change the selected function, go back to step

6 When the

SET

button is pushed, the system returns to normal

off state.

SET DATA

TEST

SETTING

00 01

TEMP.

TIMER SET MODEFAN

TIME

FILTER RESET

TEST

SET

UNIT

1-1

R.C.

No.

SAVE

SWING/FIX

CODE No.

ON / OFF

VENT

UNIT LOUVER

– 34 –

Function CODE No. (DN Code) table (includes all functions needed to perform applied control on site)

DN Item Description At shipment

Filter display delay timer 0000: None

Dirty state of filter 0000: Standard

Central control address 0001: No.1 unit

Specific indoor unit

priority

Heating temp shift 0000: No shift

Existence of [AUTO]

mode

Cooling only 0000: Heat pump

Type 0001: 4-way Cassette etc.

Indoor unit capacity 0000: Unfixed 0001 to 0034 According to capacity

12 Line address 0001: No.1 unit 0030: No.30 unitto 0099: Unfixed

13 Indoor unit address 0001: No.1 unit 0064: No.64 unitto 0099: Unfixed

Group address 0000: Individual

Temp difference of [AUTO] mode selection

COOL → HEAT, HEAT → COOL

Automatic restart of

power failure

Selection of option / error

input (CN70)

HA terminal (CN61)

select

31 Ventilating fan control 0000: Unavailable 0001: Available 0000: Unavailable

32 TA sensor selection 0000: Body TA sensor 0001: Remote controller sensor 0000: Body TA sensor

33 Temperature unit select 0000: ûC (at factory shipment) 0001: ûF 0000: ûC

Static pressure selection 0000: Standard

0002: 2500H 0004: 10000H

0001: High degree of dirt (Half of standard time)

0099: Unfixed

0000: No priority 0001: Priority 0000: No priority

0002: +2 ûC

0000: Provided 0001: Not provided (Automatic selection from connected outdoor unit)

0001: Cooling only (No display of [AUTO] [HEAT])

* refer to 36 page Type CODE No. [10]

0002: Follower unit of group

0000: 0 deg (For setup temperature, reversal of COOL / HEAT by } (Data value) / 2)

0000: None 0001: Restart 0000: None

0000: Filter input 0002: None

0000: Usual 0002: Fire alarm input

0001: 150H 0003: 5000H

0064: No.64 unitto 0099: Unfixed

0001: +1 ûC 0010: +10 ûC (Up to +6 recommended)

0001: Header unit of group 0099: Unfixed

0010: 10 degto 0003: 3 deg

0001: Alarm input (Air washer, etc.) 0002: None

0001: Leaving-ON prevention control 0000: Usual

According to type

0000: Standard

0002: +2 ûC (Floor type 0000: 0 ûC)

0001: Not provided

0000: Heat pump

Depending on model type

type

(Ts ±1.5)

(HA terminal)

Timer setting

(wired remote controller)

External interlock

release condition

Whether the power

saving mode can be set by the remote controller

Set data

External static

pressure

The list abpve is when SW501-1 and SW501-2 is OFF.

0000: Available (can be performed) 0001: Unavailable

0000: Operation stopped 0001: Release signal received 0000: Operation

0000: Invalid 0001: Valid 0001: Valid

0000

40 Pa

AP024

~ 030 (Factory default)

0001

30 Pa

AP007

~ 018 (Factory default)

0002

65 Pa

(cannot be performed)

0003

50 Pa

AP036

~ 056 (Factory default)

0004

80 Pa

0005

100 Pa

0000: Available

stopped

0006

120 Pa

– 35 –

Type DN code “10”

Value

0004

Concealed Duct Standard

Indoor Unit Capacity DN code “11”

Value

0000*

0001

0003e

0005

0007

0009

0011

0012

0013

0015

0017

0018

0021

0023

Capacity

Invalid

007 type

009 type

012 type

015 type

018 type

024 type

027 type

030 type

036 type

048 type

056 type

072 type

096 type

Type Model

MMD-AP

∗∗∗

BHP1

*1 Default value stored in EEPROM mounted on service P.C. board

– 36 –

8-6. Applied control of indoor unit

Control system using remote controller interface (TCB-IFCB4E2) Wiring and setting

• In the case of group control, the control system functions as long as it is connected to one of the indoor units (control P.C. board) in the group. If it is desired to access the operation and error statuses of other units, relevant signals must be brought to it from those units individually.

Control items

(1) Start / Stop input signal Start / stop of unit (2) In-operation signa Output present while unit in normal operation (3) Error signal Output present while alarm (e.g. serial communication error or operation of protective

device for indoor / outdoor unit) being activated

Wiring diagram of control system using remote controller interface (TCB-IFCB4E2)

Input IFCB4E2: No-voltage ON / OFF serial signal Output No-voltage contact (in-operation and error indication)

Contact capacity: Max. AC 240 V, 0.5 A

Indoor control P.C. board TCB-IFCB4E2

Start/Stop input

COM (GND)

Remote controller sisabling / ending input

In-operation signal output

COM (+12V)

Error signal output

1 2 3 4 5 6

CN61

T10

(Yellow)

1 2 3 4

CN06

1 2 3 4 5 6

CN13

Power supply 220-240V

ON side Start signal input

OFF side Stop signal input

COM

In-operation signal output

Error signal output

– 37 –

Ventilating fan control from remote controller

[Function]

• The start / stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system.

• The fan can be operated even if the indoor unit is not operating.

• Use a fan which can receive the no-voltage A contact as an outside input signal.

• In a group control, the units are collectively operated and they can not be individually operated.

1. Operation

Handle a wired remote controller in the following procedure. * Use the wired remote controller during stop of the system. * Be sure to set up the wired remote controller to the header unit. (Same in group control) * In a group control, if the wired remote controller is set up to the header unit, both header and follower units are

simultaneously operable.

1 Push concurrently

The unit No. displayed firstly indicates the header indoor unit address in the group control. In this time, the fan of the selected indoor unit turns on.

2 Every pushing

SET

UNIT LOUVER

+ CL +

buttons for 4 seconds or more.

button (left side of the button), the indoor unit numbers in group

control are displayed successively.

In this time, the fan of the selected indoor unit only turns on.

3 Using the setup temp

or button, specify the CODE No.

4 Using the timer time or button, select the SET DATA. (At shipment:

The setup data are as follows:

3131

31.

3131

00000000

0000)

00000000

SET DATA

00000000

0000

00000000

00010001

0001

00010001

5 Push

• To change the selected indoor unit, go to the procedure 2 ).

• To change the item to be set up, go to the procedure

6 Pushing

SET

button. (OK if display goes on.)

returns the status to the usual stop status.

Handling of operation of air to air heat exchanger or ventilating fan

Unavailable (At shipment)

2. Wiring

Relay (DC12V, procured locally) Corresponds to the relay up to one that the rated current of the operation coil is approx. 75mA

CN32

FAN DRIVE

(2P WHI)

Indoor control

P.C. board

Note) Determine the cable length between the

121

indoor control P.C. board and the relay within 2m.

Outside control input of fan

To terminal

Available

3 ).

Compact 4-way Cassette type 1-way Cassette type (SH) Concealed Duct Standard type Slim Duct type Ceiling type Corresponds up to a relay in which rated current of the operation coil is approx. 75 mA Other type models: Correspond up to a relay in which rated current of the operation coil is approx. 16 mA (Does not correspond to a terminal block type relay on the market.)

model :

– 38 –

Leaving-ON prevention control

[Function]

• This function controls the indoor units individually. It is connected with cable to the control P.C. board of the indoor unit.

• In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the CODE No. the connected indoor unit.

• It is used when the start operation from outside if unnecessary but the stop operation is necessary.

• Using a card switch box, card lock, etc, the forgotten-OFF of the indoor unit can be protected.

• When inserting a card, start / stop operation from the remote controller is allowed.

• When taking out a card, the system stops if the indoor unit is operating and start / stop operation from the remote controller is forbidden.

1. Control items

1) Outside contact ON: The start / stop operation from the remote controller is allowed.

2) Outside contact OFF: If the indoor unit is operating, it is stopped forcedly.

* When the card switch box does not perform the above contact operation, convert it using a relay with b contact.

2. Operation

Handle the wired remote controller switch in the following procedure. * Use the wired remote controller switch during stop of the system.

1 Push concurrently

2 Using the setup temp

3 Using the timer time or button, set 4 Push

SET

button.

(Status that card is inserted in the card switch box)

(Start / Stop prohibited to remote controller) (Status that card is taken out from the card switch box)

SET

+ CL +

buttons for 4 seconds or more.

or button, specify the CODE No.

00010001

to the SET DATA.

0001

00010001

2E2E

2E.

2E2E

2E is set to

2E2E

5 Push button. (The status returns to the usual stop status.)

3. Wiring

CN61

T10

(YEL)

Indoor control P.C. board

Note) Determine the cable length between the indoor control P.C. board and the relay within 2m.

121

343

565

Relay (procured locally)

Power supply

Outside contact (Card switch box, etc: Procured locally)

Power peak-cut from indoor unit

When the relay is turned on, a forced thermostat-OFF operation starts.

• Wiring example

CN73

(2P plug: RED)

Indoor control P.C. board

EXCT

Relay (procured locally)

121

Relay coil signal

Note) Determine the cable length between the indoor or outdoor control P.C. board and the relay within 2m.

* In the figure, the contact indicates a status that the card is taken out.

– 39 –

Manual address setting using the remote controller

Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller)

Wiring example of 2 refrigerant lines

Refrigerant line 1 Refrigerant line 2

Remote

controller

Group address

Outdoor

unit

Indoor unit 1

1Line (system) address 1 1 2 2

1Indoor unit address 2 3 1 2 1

Header unit

Indoor unit 2 Indoor unit 3

Follower unit2Follower unit

Outdoor

unit

Indoor unit 1 Indoor unit 2

Follower unit2Follower unit

In the example above, disconnect the remote controller connections between the indoor units and connect a wired remote controller to the target unit directly before address setting.

TEMP.

ON / OFF

Code No.SET DATA

2, 5, 8

FILTER RESET

TEST

TIMER SET

SET

TIME

FAN

MODE

SAVE

VENT

SWING/FIX

UNIT LOUVER

3, 6, 9 4, 7, 1

Pair the indoor unit to set and the remote controller one-to-one.

Turn on the power.

1 Push and hold the

LCD starts flashing.

SET

, CL and

buttons at the same time for more than 4 seconds.

– 40 –

2 Push the TEMP.

3 Push the TIME /

(Match the address with the address on the interface P.C. board of the header outdoor unit in the same refrigerant line.)

4 Push

(It is OK if the display turns on.)

SET

button.

5 Push the TEMP.

6 Push the TIME / buttons repeatedly to set an indoor unit address. 7 Push the

(It is OK if the display turns on.)

SET

button.

8 Push the TEMP.

/ buttons repeatedly to set the CODE No. to

buttons repeatedly to set a system address.

/ buttons repeatedly to set the CODE No. to

1212

12 .

1212

1313

13 .

1313

1414

14 .

1414

9 Push the TIME / buttons repeatedly to set a group address. If the indoor unit is

individual, set the address to

Individual : 0000 Header unit : 0001 Follower unit : 0002

Push the

(It is OK if the display turns on.)

Push the

The address setting is complete.

SETTING

(

SET

button.

flashes. You can control the unit after

} In case of group control

00000000

0000

; header unit,

00000000

SETTING

has disappeared.)

00010001

0001

; follower unit,

00010001

00020002

0002

00020002

NOTE

1. Do not use address numbers 29 or 30 when setting system addresses using the remote controller. These 2 address numbers cannot be used on outdoor units and the CODE No. [E04] (Indoor / outdoor communication error) will appear if they are mistakenly used.

2. If you set addresses to indoor units in 2 or more refrigerate lines manually using the remote controller and will control them centrally, set the header outdoor unit of each line as below.

• Set a system address for the header outdoor unit of each line with SW13 and 14 of their interface P.C. boards.

• Turn off dip switch 2 of SW30 on the interface P.C. boards of all the header outdoor units connected to the same central control, except the unit that has the lowest address. (For unifying the termination of the wiring for the central control of indoor and outdoor units)

• Connect the relay connectors between the [U1, U2] and [U3, U4] terminals on the header outdoor unit of each refrigerate line.

• After finishing all the settings above, set the address of the central control devices. (For the setting of the central control address, refer to the installation manuals of the central control devices.)

– 41 –

Confirming the indoor unit addresses and the position of an indoor unit using the remote controller

Confirming the numbers and positions of indoor units

To see the indoor unit address of an indoor unit which you know the position of

When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or it is a group-controlled one.

TEMP.

ON / OFF

FILTER RESET

TEST

TIMER SET

SET

TIME

FAN

MODE

SAVE

VENT

SWING/FIX

UNIT LOUVER

Starts running

(Execute it while the units are running.)

1 Push the 2 Push the

A unit numbers system address and indoor unit address of the unit. When 2 or more indoor units are connected to the remote controller (group-controlled units), a number of other connected units appears each time you push the

ON / OFF

UNIT LOUVER

button if the units stop.

button (left side of the button).

1-11-1

1-1 is indicated on the LCD (it will disappear after a few seconds). The indicated number shows the

1-11-1

UNIT LOUVER

button (left side of the button).

– 42 –

To find an indoor unit’s position from its address

When checking unit numbers controlled as a group

Stop

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

(Execute it while the units are stopped.)

The indoor unit numbers in a group are indicated one after another. The fan and louvers of the indicated units are activated.

1 Push and hold the

ALLALL

•

ALL appears on UNIT No. on the LCD display.

ALLALL

• The fans and louvers of all the indoor units in the group are activated.

UNIT LOUVER

2 Push the

unit numbers are indicated one after another.

• The first-indicated unit number is the address of the header unit.

• Only the fan and louvers of the indicated indoor unit are activated.

3 Push the button to finish the procedure.

All the indoor units in the group stop.

VENT

and

buttons at the same time for more than 4 seconds.

button (left side of the button). Each time you push the button, the indoor

– 43 –

To check all the indoor unit addresses using an arbitrary wired remote controller. (When communication wirings of 2 or more refrigerant lines are interconnected for central control)

6 3

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

2 4

(Execute it while the units are stopped.)

You can check indoor unit addresses and positions of the indoor units in a single refrigerant line. When an outdoor unit is selected, the indoor unit numbers of the refrigerant line of the selected unit are indicated one after another and the fan and louvers of the indicated indoor units are activated.

1 Push and hold the TIME and

At first, the line 1 and CODE No. (Select an outdoor unit.)

2 Push the

system address.

3 Push the

• The address of an indoor unit connected to the selected refrigerant line is indicated on the LCD display and its fan and louvers are activated.

4 Push the

unit numbers of the selected refrigerant line are indicated one after another.

• Only the fan and louvers of the indicated indoor unit are activated.

UNIT LOUVER

button (left side of the button) and

SET

button to confirm the system address selection.

UNIT LOUVER

button (left side of the button). Each time you push the button, the indoor

buttons at the same time for more than 4 seconds.

AC (Address Change) are indicated on the LCD display.

SWING/FIX

buttons repeatedly to select a

To select another system address

5 Push the

• After returning to step 2, select another system address and check the indoor unit addresses of the line.

6 Push the

button to return to step 2.

button to finish the procedure.

– 44 –

Changing the indoor unit address using a remote controller

To change an indoor unit address using a wired remote controller.

The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one-to-one), or an indoor unit in a group. (The method is available when the addresses have already been set automatically.)

3 8

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

4 5

1 2, 6, 7

(Execute it while the units are stopped.)

1 Push and hold the

(If 2 or more indoor units are controlled in a group, the first indicated UNIT No. is that of the head unit.)

UNIT LOUVER

2 Push the

to change if 2 or more units are controlled in a group. (The fan and louvers of the selected indoor unit are activated.)

(The fan of the selected indoor unit is turned on.)

3 Push the TEMP. / buttons repeatedly to select 4 Push the TIME /

section to that you want.

5 Push the

SET

button.

UNIT LOUVER

6 Push the

to change.

Repeat steps 4 to 6 to change the indoor unit addresses so as to make each of them unique.

UNIT LOUVER

7 Push the 8 If the addresses have been changed correctly, push the

SET

, CL , and

buttons at the same time for more than 4 seconds.

button (left side of the button) repeatedly to select an indoor unit number

1313

13 for CODE No.

1313

buttons repeatedly to change the value indicated in the SET DATA

button (left side of the button) repeatedly to select another indoor UNIT No.

button (left side of the button) to check the changed addresses.

button to finish the procedure.

– 45 –

To change all the indoor unit addresses using an arbitrary wired remote controller.

SWING/FIX

(The method is available when the addresses have already been set automatically.)

(When communication wirings of 2 or more refrigerant lines are interconnected for central control)

NOTE

You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller.

* Enter the address check / change mode and change the addresses.

TEMP.

TIMER SET

TIME

FILTER RESET

SET

TEST

Cancels the line selection

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

If no number appears on UNIT No., no outdoor unit exists on the line. Push button and select another line following step 2.

(Execute it while the units are stopped.)

1 Push and hold the TIME / buttons at the same time for more than 4 seconds.

ACAC

At first, the line 1 and CODE No.

2 Push

address.

3 Push the

• The address of one of the indoor units connected to the selected refrigerant line is indicated on the LCD display and

UNIT LOUVER

button (left side of the button) and

SET

button.

the fan and louvers of the unit are activated. At first, the current indoor unit address is displayed in SET DATA. (No system address is indicated.)

AC (Address Change) are indicated on the LCD display.

ACAC

buttons repeatedly to select a system

– 46 –

TEMP.

ON / OFF

4 Push the TIME /

TIMER SET

TEST

TIME

SET

Finish

FILTER RESET

5, 7

buttons repeatedly to change the value of the indoor unit address in

FAN

SAVE

SWING/FIX

Press to finish setting

MODE

VENT

UNIT LOUVER

SET DATA. Change the value in SET DATA to that of a new address.

5 Push the 6 Push the

SET

button to confirm the new address on SET DATA.

UNIT LOUVER

button (left side of the button) repeatedly to select another address to change. Each time you push the button, the indoor unit numbers in a refrigerant line are indicated one after another. Only the fan and louvers of the selected indoor unit are activated.

Repeat steps 4 to 6 to change the indoor unit addresses so as to make each of them unique.

7 Push the

(All the segments on the LCD display light up.)

8 Push the

SET

button.

button to finish the procedure.

– 47 –

Error clearing function

How to clear the error using the wired remote controller

Clearing an error of the outdoor unit Clear the currently detected outdoor unit for each refrigerant line to which the indoor unit controlled by the remote controller is connected. (The indoor unit error is not cleared.) Use the service monitoring function of the remote controller.

1 Push and hold the

, and

for 4 seconds or longer to enter the service monitoring

mode.

2 Push the

TEMP.

button to set CODE No. to “FF”.

3 The display in A of the following figure counts down as follows at 5-second intervals:

00050005

“

0005”

00050005

The error is cleared when “ However, the display counts down from “

4 Push the

→→

→ “

→→

00040004

0004”

00040004

→→

→ “

→→

00030003

0003”

00030003

00000000

0000

00000000

→→

→ “

→→

” appears.

00050005

0005

00050005

00020002

0002”

00020002

to return the display to normal.

FILTER RESET

” again.

TEMP.

TEST

→→

→ “

→→

TIMER SET

TIME

SET

00010001

0001”

00010001

FAN

SAVE

SWING/FIX

→→

→ “

→→

ON / OFF

MODE

VENT

UNIT LOUVER

00000000

0000”.

00000000

Clearing an error of the indoor unit Push the

ON / OFF

button on the remote controller.

(Only the error of the indoor unit controlled by the remote controller will be cleared.)

– 48 –

Monitoring function of wired remote controller

The following monitoring function is available if the remote controller of RBC-ATM32E is used.

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

Content

Enter the service monitoring mode using the remote controller to check the sensor temperature or operation status of the remote controller, indoor unit, and outdoor unit.

1 Push and hold the

, and CL for 4 seconds or longer to enter the service monitoring

mode.

0000

appears at first.

The service monitor lights up. The temperature of CODE No.

2 Push the

table for CODE No.

3 Push the left part of the

TEMP.

button to change to CODE No. of the item to monitor. Refer to the following

UNIT LOUVER

button (left side of the buton) to change to the item to

0000

monitor. Monitor the sensor temperature or operation status of the indoor unit and outdoor unit in the refrigerant line

4 Push the to

return the display to normal.

– 49 –

Target outdoor unit (SMMS, SHRM, Mini-SMMS – Series 1 – 2)

CODE No. Data Format Unit Remote controller display example

Indoor unit data

System unit data

00 01 02 03 04 05 08 0A

0B 0C 0D

Room temperature (in control) *1 Room temperature (Remote controller) Air Temperature (TA) Coil Temperature (TCJ) Coil Temperature (TC2) Coil Temperature (TC1) PMV Number of connected indoor units Total horse power of connected indoor units Number of connected outdoor units Total horse power of outdoor units

×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1

˚C ˚C ˚C ˚C ˚C ˚C

pls

—

[0024]=24 ˚C

[0050]=500 pls [0048]=48 [0415]=41.5 HP [0004]=4 [0420]=42 HP

Individual data 1 of outdoor unit *3

CODE No.

U1 U2 U3 U4

10 20 30 40

11 21 31 41 ×1 ˚C

12 22 32 42

13 23 33 43 ×1 MPa

Discharge temperature of compressor 1 (Td1)

Discharge temperature of compressor 2 (Td2)

Detection pressure of high-pressure sensor (Pd)

Detection pressure of low-pressure sensor (Ps)

Suction Temperature (TS)

Coil Temperature 1 (TE)

Liquid Temperature (TL)

Outdoor Temperature (TO)

Low-pressure saturation temperature (TU)

Current of compressor 1 (I1)

Current of compressor 2 (I2)

PMV1 + 2

PMV3

Compressor 1, 2 ON/OFF

Outdoor fan mode

Horse power of outdoor unit

Data Format Unit Remote controller display example

×1 ˚C

[0024]=24 ˚C

×1 MPa

[0123]=1.23 MPa

×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1

*2 ×1 ×1

˚C ˚C ˚C ˚C ˚C

A pls pls

— —

[0024]=24 ˚C

[0135]=13.5 A

[0050]=500 pls [0050]=500 pls

[0031]=Mode 31 [0016]=16HP

*1 In the case of group connection, only the header indoor unit data can be displayed. *2 01 ... Only compressor 1 is on

10 ... Only compressor 2 is on 11 ... Both compressor 1 and 2 are on

*3 The upper digit of CODE No. indicates the outdoor unit No.

U1 outdoor unit (Header unit) U2 outdoor unit (follower unit 1) U3 outdoor unit (follower unit 2) U4 outdoor unit (follower unit 3)

– 50 –

Target outdoor unit (SMMS-i – Series 4)

CODE No. Data Format Unit Remote controller display example

Indoor unit data *2

System unit data

00 01 02 03 04 05 06 08

0B 0C 0D

Room temperature (in control) Room temperature (Remote controller) Air Temperature (TA) Coil Temperature (TCJ) Coil Temperature (TC2) Coil Temperature (TC1) Discharge temperature (TF) *1 PMV Air Suction Temperature of direct expansion

coil (TSA) *1

Outdoor Air Temperature (TOA) *1 Number of connected indoor units Total horse power of connected indoor units Number of connected outdoor units Total horse power of outdoor units

×1 ×1 ×1 ×1 ×1 ×1 ×1

×1/10

×1 ˚C [0024]=24 ˚C

×1 ×1

×10

×1

×10

˚C ˚C ˚C ˚C ˚C ˚C ˚C

pls

˚C —

—

[0024]=24 ˚C

[0150]=1500 pls

[0048]=48 [0415]=41.5HP [0004]=4 [0420]=42HP

Individual data 1 of outdoor unit *3

CODE No.

U1 U2 U3 U4

10 20 30 40

11 21 31 41 ×100 MPa

12 22 32 42

13 23 33 43 ×1 ˚C

14 24 34 —

Detection pressure of high-pressure sensor (Pd)

Detection pressure of low-pressure sensor (Ps)

Discharge temperature of compressor 1 (Td1)

Discharge temperature of compressor 2 (Td2)

Discharge temperature of compressor 3 (Td3)

Suction Temperature (TS)

Coil Temperature 1 (TE1)

—

Coil Temperature 2 (TE2)

Liquid Temperature (TL)

Outdoor Temperature (TO)

PMV1 + 2

—

PMV4

Current of compressor 1 (I1)

Current of compressor 2 (I2)

—

Current of compressor 3 (I3)

Outdoor fan current (IFan)

Data Format Unit Remote controller display example

×100 MPa

[0123]=1.23 MPa

×1 ˚C

×1 ×1 ×1 ×1 ×1 ×1

×1 ×10 ×10 ×10 ×10

˚C ˚C ˚C ˚C

˚C pls pls

A A A A

[0024]=24 ˚C

[0050]=500 pls

[0135]=13.5 A

*1 The TF/TSA/TOA sensors are equipped only with some types of indoor units. The data does not appear for

other types. *2 In the case of group connection, only the header indoor unit data can be displayed. *3 The upper digit of CODE No. indicates the outdoor unit No. *4 [(The upper digit of CODE No.) – 4] indicates the outdoor unit No.

1∗, 5∗ ... U1 outdoor unit (Header unit)

2∗, 6∗ ... U2 outdoor unit (follower unit 1)

3∗, 7∗ ... U3 outdoor unit (follower unit 2)

4∗, 8∗ ... U4 outdoor unit (follower unit 3) *5 Only CODE No. 5• of U1 outdoor unit (Header unit) is displayed.

– 51 –

Individual data 2 of outdoor unit *4

CODE No.

U1 U2 U3 U4

Rotation of compressor 1

Rotation of compressor 2

—

Rotation of compressor 3

Outdoor fan mode

54 64 74 84

55 65 75 85

56 66 76 —

57 67 77 87 Heat sink temperature of outdoor fan IPDU ×1 ˚C

58 — — —

59 — — — Pressure release *5

5A — — —

5B — — —

5F 6F 7F 8F Horse power of outdoor unit ×1 HP

Heat sink temperature of compressor IPDU1

Heat sink temperature of compressor IPDU2

Heat sink temperature of compressor IPDU3

In heat/cool collecting control *5

Discharge temperature release *5

Terminal unit release (U2 / U3 / U4 outdoor unit) *5

Data Format Unit Remote controller display example

×10 ×10 ×10

×1

×1 ˚C

0: Normal 1: In collecting control

0: Normal 1: In release control

rps rps rps

Mode

[0642]=64.2 rps

[0058]=Mode 58

[0024]=24 ˚C

[0010] = In heat collecting control [0001] = In cool collecting control

[0010] = In pressure release control

[0001] = In discharge temperature release control

[0100] = In U2 outdoor unit release control [0010] = In U3 outdoor unit release control [0001] = In U4 outdoor unit release control

[0016]=16HP

*1 The TF / TSA / TOA sensors are equipped only with some types of indoor units. The data does not appear

for other types. *2 In the case of group connection, only the header indoor unit data can be displayed. *3 The upper digit of CODE No. indicates the outdoor unit No. *4 [(The upper digit of CODE No.) – 4] indicates the outdoor unit No.

1∗, 5∗ ... U1 outdoor unit (Center unit)

2∗, 6∗ ... U2 outdoor unit (terminal unit 1)

3∗, 7∗ ... U3 outdoor unit (terminal unit 2)

4∗, 8∗ ... U4 outdoor unit (terminal unit 3) *5 Only CODE No. 5∗ of U1 outdoor unit (Center unit) is displayed.

LED display of circuit board

1. D501 (Red)

• Lights up when the power is turned on (Microcomputer works)

• Blinks at 1-second intervals (0.5-second): No EEPROM, or writing error

• Blinks at 10-second intervals (5-second): No DISP mode

• Blinks at 2-second intervals (1-second): Function change being set (EEPROM)

2. D403 (Red)

• Lights up (on hardware) when the power is supplied to the remote controller

– 52 –

9. TROUBLESHOOTING

9-1. Overview

(1) Before engaging in troubleshooting

(a) Applicable models

All Super Module Multi (SMMS, SHRM, Mini-SMMS, SMMS-i) models. (Indoor units: MMO-APOOO, Outdoor units: MMY-MAPOOOO*, MCY-MAPOOOHT*)

(b) Tools and measuring devices required

• Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc.

• Multimeter, thermometer, pressure gauge, etc.

NO.

A compressor would not start • Could it just be the 3-minute delay period

An indoor fan would not start2 • Could it just be cold air discharge prevention control, which is part of heating?

An outdoor fan would not start or would

change speed for no reason

An indoor fan would not stop

The air conditioner would not respond to a

start / stop command from a remote controller

Behavior Possible cause

(3 minutes after compressor shutdown)?

• Could it just be the air conditioner having gone thermo OFF?

• Could it just be the air conditioner operating in fan mode or put on the timer?

• Could it just be the system going through initial communication?

• Could it just be cooling operation under low outside temperature conditions?

• Could it just be defrosting operation?

• Could it just be the elimination of residual heat being performed as part of the air conditioner shutdown process after heating operation?

• Could it just be the air conditioner operation under external or remote controller?

(2) Troubleshooting procedure

When a fault occurs, proceed with troubleshooting in accordance with the procedure shown below.

"E28" error

Fault

Investigate check code displayed on interface P.C. board of header unit

Investigate check code displayed on interface P.C. board of relevant follower unit

Any other fault

Check fault site or faulty part

NOTE

Rather than a genuine fault (see the List of Check Codes below), the problem could have been caused by a microprocessor malfunction attributable to a poor quality of the power source or an external noise. Check for possible noise sources, and shield the remote controller wiring and signal wires as necessary.

– 53 –

9-2. Troubleshooting method

The remote controllers (main remote controller and central control remote controller) and the interface P.C. board of an outdoor unit are provided with an LCD display (remote controller) or a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the fault site / faulty part may be identified in the event of a fault by following the method described below.

The list below summarizes check codes detected by various devices. Analyze the check code according to where it is displayed and work out the nature of the fault in consultation with the list.

• When investigating a fault on the basis of a display provided on the indoor remote controller or TCC-LINK central control remote controller See the “TCC-LINK remote controller or main remote controller display” section of the list.

• When investigating a fault on the basis of a display provided on an outdoor unit - See the “Outdoor 7segment display” section of the list.

• When investigating a fault on the basis of a wireless remote controller-controlled indoor unit - See the “Light sensor indicator light block” section of the list.

List of check codes (indoor unit)

(Error detected by indoor unit)

Check code

TCC-LINK

central control

or main remote

controller

display

Outdoor 7-segment display Indicator light block

Sub-code

E03

E04

E08 E08

E10

E18

F01 ALT

F02 ALT

F03 ALT

F10 ALT

F11 ALT

F29 SIM

L03 SIM

L07 SIM

L08 L08 SIM

L09 SIM

L20 SIM

L30 L30

P01 ALT

P10 P10

P12 ALT

P31 ALT

⎯

Duplicated indoor address Duplicated indoor address Indoor unit detects address identical to its own.

⎯

Detected indoor unit No.

⎯

Detected indoor unit No.

⎯

Display of receiving unit

Operation

Timer

Ready

IPDU: Intelligent Power Drive Unit (Inverter P.C. board)

ALT.: Flashing is alternately when there are two flashing LED SIM: Simultaneous flashing when there are two flashing LED

Typical fault site Description of error

Flash

Indoor-remote controller periodic communication erro

Indoor-outdoor periodic communication error

Indoor inter-MCU communication error

Error in periodic communication between indoor header and follower unit

Indoor heat exchanger temperature sensor (TCJ) error

Indoor heat exchanger temperature sensor (TC2) error

Indoor heat exchanger temperature sensor (TC1) error

Ambient temperature sensor (TA) error

Discharge temperature sensor (TF) error

P.C. board or other indoor error

Duplicated indoor group header unit

Connection of group control cable to stand-alone indoor unit

Indoor group address not set

Indoor capacity not set

Duplicated central control address There is duplication in central control address setting.

Indoor external error input

SIM

(interlock)

Indoor AC fan error

ALT

Indoor overflow error Float switch has been activated.

Indoor DC fan error

Other indoor unit error

Communication from remote controller or network adaptor has been lost (so has central control communication).

Signals are not being received from outdoor unit.

MCU communication between main controller and motor microcontroller is faulty.

Periodic communication between indoor header and follower units cannot be maintained.

Heat exchanger temperature sensor (TCJ) has been open / shortcircuited.

Heat exchanger temperature sensor (TC2) has been open / shortcircuited.

Heat exchanger temperature sensor (TC1) has been open / shortcircuited.

Ambient temperature sensor (TA) has been open / short-circuited.

Discharge temperature sensor (TF) has been open / shortcircuited.

Indoor EEPROM is abnormal (some other error may be detected).

There is more than one header unit in group.

There is at least one stand-alone indoor unit to which group control cable is connected.

Address setting has not been performed for one or more indoor units (also detected at outdoor unit end).

Capacity setting has not been performed for indoor unit.

Unit shutdown has been caused by external error input (CN80).

Indoor AC fan error is detected (activation of fan motor thermal relay).

Indoor DC fan error (e.g. overcurrent or lock-up) is detected.

Follower unit cannot be operated due to header unit alarm (E03 / L03 / L07 / L08).

: Goes off: Lighting, : Flashing,

– 54 –

(Error detected by main remote controller)

Display of receiving unit

Operation

Main

remote

controller

Check code

Outdoor 7-segment display Indicator light block

Sub-code

Timer

Ready

Typical fault site Description of error

Flash

E01

E02

⎯

(Error detected by central control device)

Check code

TCC-LINK

central control

Outdoor 7-segment display Indicator light block

Sub-code

C05

C06

⎯

C12

P30

⎯

Display of receiving unit

Operation

Timer

Ready

Flash

No indication (when main remote controller also in use)

⎯

As per alarm unit (see above)

No master remote controller, faulty remote controller communication (reception)

Faulty remote controller communication (transmission)

Duplicated master remote controller

Signals cannot be received from indoor unit; master remote controller has not been set (including two remote controller control).

Signals cannot be transmitted to indoor unit.

Both remote controllers have been set as master remote controller in two remote controller control (alarm and shutdown for header unit and continued operation for follower unit)

Typical fault site Description of error

Faulty central control communication (transmission)

Faulty central control communication (reception)

Multiple network adapters

Blanket alarm for generalpurpose device control interface

Group control follower unit error

Central control device is unable to transmit signal due to duplication of central control device (AI-NET).

Central control device is unable to receive signal.

Multiple network adapters are connected to remote controller communication line (AI-NET).

Device connected to general-purpose device control interface for TCC-LINK / AI-NET is faulty.

Group follower unit is faulty (unit No. and above detail [∗∗∗] displayed on main remote controller)

Note: The same error, e.g. a communication error, may result in the display of different check codes depending on the device that detects it. Moreover, check codes detected by the main remote controller / central control device do not necessarily have a direct impact on air conditioner operation.

– 55 –

List of check codes (outdoor unit)

(Errors detected by SMMS outdoor interface - typical examples)

Check code

Outdoor 7-segment display

Sub-code

Number of indoor units from which

E06

signal is received normally

E07 – (E04)

E08 Duplicated indoor address

01: Indoor-outdoor communication 02: Outdoor-outdoor

E12

communication

E15 – E15

00: Overloading

E16

01: Number of units connected

00: No header unit

E19

02: Two or more header units

01: Connection of outdoor unit from other refrigerant line

E20

02: Connection of indoor unit from other refrigerant line

E23 – E23

E25 – E25

Address of outdoor unit from which

E26

signal is not received normally

E28 Detected outdoor unit No. E28 Outdoor follower unit error

TCC-LINK

central control

or main remote

controller

display

Display of receiving unit

Indicator light block

Operation

Timer Ready

E06 Dropping out of indoor unit

(E08)

E12

E16

E19

E20

E26

Flash

Typical fault site Description of error

Indoor-outdoor communication circuit error

Duplicated indoor address

Automatic address starting error

Indoor unit not found during automatic address setting

Too many indoor units connected / overloading

Error in number of outdoor header units

Connection to other refrigerant line found during automatic address setting

Outdoor-outdoor communication transmission error

Duplicated follower outdoor address

Dropping out of outdoor unit

IPDU: Intelligent Power Drive Unit (Inverter P.C. board)

ALT.: Flashing is alternately when there are two flashing LED SIM: Simultaneous flashing when there are two flashing LED

There is no or more than one outdoor header unit

:Lighting,

: Flashing,

Indoor unit initially communicating normally fails to return signal (reduction in number of indoor units connected).

Signal cannot be transmitted to indoor units (→ indoor units left without communication from outdoor unit).

More than one indoor unit is assigned same address (also detected at indoor unit end).

• Indoor automatic address setting is started while

automatic address setting for equipment in other refrigerant line is in progress.

• Outdoor automatic address setting is started

while automatic address setting for indoor units is in progress.

Indoor unit fails to communicate while automatic address setting for indoor units is in progress.

Combined capacity of indoor units is too large (more than 135 % of combined capacity of outdoor units).

in one refrigerant line.

Indoor unit from other refrigerant line is detected while indoor automatic address setting is in progress.

Signal cannot be transmitted to other outdoor units.

There is duplication in outdoor addresses set manually.

Follower outdoor unit initially communicating normally fails to do so (reduction in number of follower outdoor units connected).

Outdoor header unit detects fault relating to follower outdoor unit (detail displayed on follower outdoor unit).

: Goes off

A3-IPDU

Fan IPDU

01 02

O 04 05

O 06 07

O 08 09

01: TE1 02: TE2

O O

E31 E31 IPDU communication error

F04 – F04 ALT

F05 –

F06

F07 – F07 ALT

F08 – F08 ALT

F11 – F11

O O O O

0A 0B 0C 0D 0E 0F

O O

Circle (O): Faulty IPDU

A3-IPDU

Fan IPDU

O O O

Outdoor discharge temperature sensor (TD1) error

Outdoor discharge

F05

F06 ALT

temperature sensor (TD2)

ALT

error

Outdoor heat exchanger temperature sensor (TE1, TE2) error

Outdoor liquid temperature sensor (TL) error

Outdoor outside air temperature sensor (TO) error

There is no communication between IPDUs (P.C. boards) in inverter box.

Outdoor discharge temperature sensor (TD1) has been open / short-circuited.

Outdoor discharge temperature sensor (TD2) has been open / short-circuited.

Outdoor heat exchanger temperature sensors (TE1, TE2) have been open / short-circuited.

Outdoor liquid temperature sensor (TL) has been open / short-circuited.

Outdoor outside air temperature sensor (TO) has been open / short-circuited.

– 56 –

Display of receiving unit

Indicator light block

Operation

Timer Ready

Flash

Typical fault site Description of error

Outdoor suction temperature sensor (TS1)

Outdoor 7-segment display

F12

Check code

TCC-LINK

central control

Sub-code

or main remote

controller

display

– F12 ALT

error

01: Compressor 1 02: Compressor 2

F13

03: Compressor 3

F13

F15 – F15 ALT

Outdoor IGBT built-in temperature sensor (TH)

ALT

error

Outdoor temperature sensor (TE1, TL) wiring error

F16 – F16 ALT

F22 – F22 ALT

Outdoor pressure sensor (Pd, Ps) wiring error

Outdoor discharge temperature sensor (TD3) error

F23 – F23 ALT

F24 – F24 ALT

Low pressure sensor (Ps) error

High pressure sensor (Pd) error

F31 – F31 SIM Outdoor EEPROM error

01: Compressor 1 02: Compressor 2

H01

03: Compressor 3

01: Compressor 1 02: Compressor 2

H02

03: Compressor 3

01: Compressor 1

H03

02: Compressor 2 03: Compressor 3

H04

H05 – H05

H01

H02

H03

H05

Compressor breakdown

Compressor error (Lock)

Current detection circuit error

Compressor 1 case thermo activation

Outdoor discharge temperature sensor (TD1) wiring error

H06 – H06

H07 – H07

01: TK1 sensor error 02: TK2 sensor error

H08

03: TK3 sensor error

H08

04: TK4 sensor error

Activation of low-pressure protection

Error in temperature sensor for oil level detection (TK1-5)

05: TK5 sensor error

H14 – H14

H15 – H15

Compressor 2 case thermo activation

Outdoor discharge temperature sensor (TD2) wiring error

01: TK1 oil circuit error 02: TK2 oil circuit error

H16

03: TK3 oil circuit error 04: TK4 oil circuit error

H16

Oil level detection circuit error

05: TK5 oil circuit error

H25 – H25

Outdoor discharge temperature sensor (TD3) wiring error

L04 – L04 SIM

L05 SIM

Number of priority indoor units

L06

(check code L05 or L06 depending on individual unit)

L06 SIM

Duplicated outdoor refrigerant line address

Duplicated priority indoor unit (as displayed on priority indoor unit)

Duplicated priority indoor unit (as displayed on indoor unit other than priority indoor unit)

Outdoor suction temperature sensor (TS1) has been open / short-circuited.

Open-circuit or short-circuit of the outdoor IGBT built-in temperature sensor (TH) was detected.

Wiring error in outdoor temperature sensors (TE1, TL) has been detected.

Wiring error in outdoor pressure sensors (Pd, Ps) has been detected.

Outdoor discharge temperature sensor (TD3) has been open / short-circuited.

Output voltage of low pressure sensor (Ps) is zero.

Output voltage of high pressure sensor (Pd) is zero or provides abnormal readings when compressors have been turned off.

Outdoor EEPROM is faulty (alarm and shutdown for header unit and continued operation for follower unit)

Overcurrent of the inverter current (Idc) detection circuit was detected.

Compressor lock was detected.

Current error was detected while the compressor was stopped.

Compressor 1 case thermo was activated for protection.

Wiring / installation error or detachment of outdoor discharge temperature sensor (TD1) has been detected.

Low pressure (Ps) sensor detects abnormally low operating pressure.

Temperature sensor for oil level detection (TK1-5) detects abnormally low oil level.

Temperature sensor for oil level detection (TK1-5) has been open / short-circuited.

Compressor 2 case thermo was activated for protection.

Wiring / installation error or detachment of outdoor discharge temperature sensor (TD2) has been detected.

No temperature change is detected by temperature sensor for oil level detection (TK1-5) despite compressor having been started.

Wiring / installation error or detachment of outdoor discharge temperature sensor (TD3) has been detected.

Identical refrigerant line address has been assigned to outdoor units belonging to different refrigerant piping systems.

More than one indoor unit has been set up as priority indoor unit.

– 57 –

Check code

Outdoor 7-segment display

Sub-code

L08

L10

L17

L18

–

TCC-LINK

central control

or main remote

controller

L28

SMMS (Series 1) 01: A3-IPDU1 error 02: A3-IPDU2 error 03: A3-IPDU1/A3-IPDU2 error 04: Fan IPDU error 05: A3-IPDU1 + Fan IPDU error 06: A3-IPDU2 + Fan IPDU error 07: All IPDU error SMMS-i (Series 4)

IPDU

O O

A3-IPDU

0D 0E

Circle (O): Faulty IPDU

Fan

IPDU

O O O

A3-IPDU Fan

L29 L29

07 08

Display of receiving unit

Indicator light block

Operation

display

(L08)

L10

L18

L28

Timer Ready

Flash

SIM

SIML17

SIM

L30 Detected indoor unit No. (L30) SIM

P03 –

P0301: Compressor 1 02: Compressor 2

P04

03: Compressor 3

P04

ALT

00: Open phase detected

01: Compressor 1

P05 P05

02: Compressor 2

ALT

03: Compressor 3

01: Compressor 1

P07 P07

02: Compressor 2

ALT

03: Compressor 3

P10

Indoor unit No. detected

P13 – P13

01: TS condition

P15

02: TD condition

(P10)

P15

ALT

P17 – P17

ALT

P18 – P18 ALT

P19 P19

Outdoor unit No. detected

ALT

P20 – P20 ALT

Typical fault site Description of error

SIM Indoor group address not set

Outdoor capacity not set

Outdoor model incompatibility error

FS (Flow Selector) unit error

Too many outdoor units connected

Error in number of IPDUs

Indoor external error input (interlock)

Outdoor discharge (TD1) temperature error

High-pressure SW activation

Open phase / power failure

Inverter DC voltage (Vdc) error MG-CTT error

Heat sink overheating error

Indoor unit overflow

Address setting has not been performed for one or more indoor units (also detected at indoor end).

Outdoor unit capacity has not been set (after P.C. board replacement).

Old model outdoor unit (prior to 3 series) has been connected.

Cooling / heating cycle error resulting from piping error is detected.

More than four outdoor units have been connected.

There are insufficient number of IPDUs (P.C. boards) in inverter box.

Indoor unit has been shut down for external error input in one refrigerant line (detected by indoor unit).

Outdoor discharge temperature sensor (TD1) has detected abnormally high temperature.

High-pressure SW was activated.

Open phase is detected when power is turned on. Inverter DC voltage is too high (overvoltage) or too low (undervoltage).

Temperature sensor built into IGBT (TH) detects overheating.

Indoor unit has been shutdown in one refrigerant line due to detection of overflow (detected by indoor unit).

Outdoor liquid backflow detection error

State of refrigerant cycle circuit indicates liquid backflow operation.

Outdoor suction temperature sensor (TS1) detects

Gas leak detection

Outdoor discharge (TD2) temperature error

Outdoor discharge (TD3) temperature error

4-way valve reversing error

Activation of high-pressure protection

sustained and repeated high temperatures that exceed standard value.

Outdoor discharge temperature sensor (TD2) detects abnormally high temperature.

Outdoor discharge temperature sensor (TD3) detects abnormally high temperature.

Abnormality in refrigerating cycle is detected during heating operation.

High pressure (Pd) sensor detects high pressure that exceeds standard value.

MG-CTT: Magnet contactor

– 58 –

(Errors detected by IPDU featuring in SMMS standard outdoor unit - typical examples)

Check code

Outdoor 7-segment display

Sub-code

01: Compressor 1 02: Compressor 2

F13 F13

03: Compressor 3

01: Compressor 1

H01 H01

02: Compressor 2 03: Compressor 3

01: Compressor 1

H02

02: Compressor 2 03: Compressor 3

01: Compressor 1

H03 H03

02: Compressor 2 03: Compressor 3

01: Compressor 1

P04 P04

02: Compressor 2 03: Compressor 3

P07 P07

TCC-LINK

central control

or main remote

controller

display

Display of receiving unit

Indicator light block

Operation

H02

Timer Ready

Typical fault site Description of error

Flash

Error in temperature sensor built into indoor

ALT

IGBT (TH)

Compressor breakdown

Current detection circuit error

Activation of high-pressure

ALT

Heat sink overheating

ALT

error

Temperature sensor built into indoor IGBT (TH) has been open / short-circuited.

Inverter current (Idc) detection circuit detects overcurrent.

Compressor lockup is detectedCompressor error (lockup)

Abnormal current is detected while inverter compressor is turned off.

High-pressure SW is activated.

Temperature sensor built into IGBT (TH) detects overheating.

P20

SMMS (Series 1) 04: Rotation difference error 06: Maximum rotation exceeded 08: Out of step 0A: Idc activation 0C: Fan lock 0d: Lock 0E: Sync error 0F: Control error

P22 P22

SMMS-i (Series 4)

0..: IGBT circuit

1..: Position detection circuit error

3..: Motor lockup error

4..: Motor current detection C..: TH sensor error D..: TH sensor error E..: Inverter DC voltage error (outdoor fan) Note: Although letters 0 to F appear at locations indicated by "∗", please ignore them.

01: Compressor 1

P26 P26

02: Compressor 2 03: Compressor 3

01: Compressor 1

P29 P29

02: Compressor 2 03: Compressor 3

P20

High-pressure protection

ALT

activation

ALT

Outdoor fan IPDU error Outdoor fan IPDU detects error.

Activation of G-Tr (IGBT)

ALT

short-circuit protection

Compressor position

ALT

detection circuit error

High-pressure (Pd) sensor detected a value over the criteria.

Short-circuit protection for compressor motor driver circuit components is activated (momentary overcurrent).

Compressor motor position detection error is detected.

Note: The above check codes are examples only, and different check codes may be displayed depending on the outdoor unit configuration (e.g. a Super heat recovery multi system). For details, see the service manual for the outdoor unit.

– 59 –

9-3. Troubleshooting based on information displayed on remote controller

Using main remote controller (RBC-AMT32E)

(1) Checking and testing When a fault occurs to an air conditioner, a check

code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation. If the display has already disappeared, access error history by following the procedure described below.

(2) Error history The error history access procedure is described below (up to four errors stored in memory).

Error history can be accessed regardless of whether the air conditioner is in operation or shut down.

<Procedure> To be performed when system at rest

1 Invoke the SERVICE CHECK mode by pressing the

SET

buttons simultaneously and holding for at least 4

seconds.

The letters “ SERVICE CHECK” light up, and the check code “01” is displayed, indicating the error history. This is accompanied by the indoor unit No. to which the error history is related and a check code.

2 To check other error history items, press the

button to select another check code.

Check code “01” (latest) → Check code “04” (oldest) Note: Error history contains four items.

3 When the

restored.

button is pushed, normal display is

Check code

TEMP.

Indoor unit No. in which fault has occurred

TEMP.

TEST

TIMER SET

TIME

SET

Steps to follow

FILTER RESET

ON / OFF

FAN

MODE

SAVE

VENT

SWING/FIX

UNIT LOUVER

Normal display is restored.

REQUIREMENT

Do not push the CL button as it would erase the whole error history of the indoor unit.

How to read displayed information

<7-segment display symbols>

23456789AbCdEFHJLP0

0 1 2 3 4 5 6 7 8 9 A b C d E F H J L P

321

– 60 –

Using TCC-LINK central control remote controller (TCB-SC642TLE2)

(1) Checking and testing When a fault occurs to an air conditioner, a

check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation. If the display has already disappeared, access error history by following the procedure described below.

(2) Error history The error history access procedure is described below (up to four errors stored in memory).

Error history can be accessed regardless of whether the air conditioner is in operation or shut down.

1 Push the

SET

buttons simultaneously and hold for at least 4 seconds.

Display of Unit No.

UNIT No.

3 - 9

R.C.

No.

Alternate blinking

Display of check code

TEST

p - 10

2 The letters “ SERVICE CHECK” light up, and the check code “01” is displayed. 3 When a group No. is selected (blinking), if there is an error history, the UNIT No. and the

latest error history information are displayed alternately.

* During this procedure, the temperature setting feature is unavailable.

Display of Unit No.

UNIT No.

3 - 9

R.C.

No.

Alternate blinking

4 To check other error history items, push the

04.).

TEMP.

Display of check code

TEST

p - 10

button to select another check code (01-

5 To check check code relating to another group, push (ZONE) and (GROUP) buttons to

select a group No. Do not push the

6 To finish off the service check, push the

button as it would erase the whole error history of the selected group.

button.

– 61 –

Using indoor unit indicators (receiving unit light block) (wireless type)

To identify the check code, check the 7-segment display on the header unit. To check for check codes not displayed on the 7-segment display, consult the “List of Check Codes (Indoor Unit)” in “9-2. Troubleshooting method”.

: Goes off

Ready

Check code

–

E01

E02

E03

E08 Duplicated indoor unit No. (address)

E09 Duplicated master remote controller

E10 Indoor unit inter-MCU communication error

E12 Automatic address starting error

E18 Error or poor contact in wiring between indoor units, indoor power turned off

E04

E06 Faulty reception in indoor-outdoor communication (dropping out of indoor unit)

E07 Faulty transmission in indoor-outdoor communication

E15 Indoor unit not found during automatic address setting

E16 Too many indoor units connected / overloading

E19 Error in number of outdoor header units

E20 Detection of refrigerant piping communication error during automatic address setting

E23 Faulty transmission in outdoor-outdoor communication

E25 Duplicated follower outdoor address

E26 Faulty reception in outdoor-outdoor communication, dropping out of outdoor unit

E28 Outdoor follower unit error

E31 IPDU communication error

P01 Indoor AC fan error

P10 Indoor overflow error

P12 Indoor DC fan error

Power turned off or error in wiring between receiving and indoor units

Faulty reception

Faulty transmission

Loss of communication

Error or poor contact in wiring between indoor and outdoor units (loss of indoor-outdoor communication)

Receiving unit

Light block Cause of fault

Operation Timer Ready

All lights out

Operation

Blinking

Operation

Operation Timer Ready

Timer

Ready

Blinking

: Lighting

: Blinking (0.5 seconds)

Error or poor contact in wiring between receiving and indoor units

Setting error

Alternate blinking

Operation Timer Ready

Alternate blinking

P13 Outdoor liquid backflow detection error

P03 Outdoor discharge (TD1) temperature error

P04 Activation of outdoor high-pressure SW

P05

P07 Outdoor heat sink overheating error - Poor cooling of electrical component (IGBT) of outdoor unit

P15 Gas leak detection - insufficient refrigerant charging

P17 Outdoor discharge (TD2) temperature error

P18 Outdoor discharge (TD3) temperature error

P19 Outdoor 4-way valve reversing error

P20 Activation of high-pressure protection

P22 Outdoor fan IPDU error

P26 Outdoor G-Tr short-circuit error

P29 Compressor position detection circuit error

P31 Shutdown of other indoor unit in group due to fault (group follower unit error)

Open phase / power failure Inverter DC voltage (Vdc) error MG-CTT error

MG-CTT: Magnet contactor

– 62 –

Light block Check code Cause of fault

Operation Timer Ready

Alternate blinking

Operation Timer Ready

Alternate blinking

F01 Heat exchanger temperature sensor (TCJ) error

F02 Heat exchanger temperature sensor (TC2) error

F03 Heat exchanger temperature sensor (TC1) error

F10 Ambient temperature sensor (TA) error

F11 Discharge temperature sensor (TF) error

F04 Discharge temperature sensor (TD1) error

F05 Discharge temperature sensor (TD2) error

F06 Heat exchanger temperature sensor (TE1, TE2) error

F07 Liquid temperature sensor (TL) error

F08 Outside air temperature sensor (TO) error

F12 Suction temperature sensor (TS1) error

F13 Heat sink sensor (TH) error

F15

F16

Wiring error in heat exchanger sensor (TE1) and liquid temperature sensor (TL) Outdoor unit temperature sensor wiring / installation error

Wiring error in outdoor high pressure sensor (Pd) and low pressure sensor (Ps) Outdoor pressure sensor wiring error

F22 Outdoor discharge temperature sensor (TD3) error

F23 Low pressure sensor (Ps) error

F24 High pressure sensor (Pd) error

Indoor unit temperature sensor errors

Outdoor unit temperature sensor errors

Outdoor unit pressure sensor errors

Operation

Synchronized blinking

Operation Timer Ready

Operation

Timer Ready

Blinking

Timer Ready

Synchronized blinking

Timer Ready

Synchronized blinking

F29 Fault in indoor EEPROM

H01 Compressor breakdown

H02 Compressor lockup

Outdoor unit compressor related errors

H03 Current detection circuit error

H05 Wiring / installation error or detachment of outdoor discharge temperature sensor (TD1)

H06 Abnormal drop in low-pressure sensor (Ps) reading

H07 Abnormal drop in oil level

Protective shutdown of outdoor unit

H08 Error in temperature sensor for oil level detection circuit (TK1, TK2, TK3, TK4 or TK5)

H15 Wiring / installation error or detachment of outdoor discharge temperature sensor (TD2)

H16 Oil level detection circuit error - Error in outdoor unit TK1, TK2, TK3, TK4 or TK5 circuit

H25 Wiring / installation error or detachment of outdoor discharge temperature sensor (TD3)

L03 Duplicated indoor group header unit

L05 Duplicated priority indoor unit (as displayed on priority indoor unit)

L06 Duplicated priority indoor unit (as displayed on indoor unit other than priority indoor unit)

L07 Connection of group control cable to stand-alone indoor unit

L08 Indoor group address not set

L09 Indoor capacity not set

L04 Duplicated outdoor refrigerant line address

L10 Outdoor capacity not set

L17 Outdoor model incompatibility error

L18 Flow selector units error

L20 Duplicated central control address

L28 Too many outdoor units connected

L29 Error in number of IPDUs

L30 Indoor external interlock error

– 63 –

Light block Check code Cause of fault

Operation

Synchronized blinking

Timer Ready

F31 Outdoor EEPROM error

Other (indications not involving check code)

Light block Check code Cause of fault

Operation Timer

Synchronized blinking

Operation Timer Ready

Alternate blinking

Ready

– Test run in progress

–

Setting incompatibility (automatic cooling / heating setting for model incapable of it and heating setting for cooling-only model)

– 64 –

9-4. Check codes displayed on remote controller and SMMS outdoor unit (7-segment

display on I/F board) and locations to be checked

For other types of outdoor units, refer to their own service manuals.

Main

remote

controller

E01

E02

E03

E04

E06 E06

Check code

Outdoor 7-segment display

Check

code

Sub-code

No. of indoor units from which signal is received normally

Location

detection

Remote controller

Indoor unit

I/F Dropping out of

Description System status

Indoor-remote controller communication error (detected at remote controller end)

Remote controller transmission error

Indoor-remote controller communication error (detected at indoor end)

Indoor-outdoor communication circuit error (detected at indoor end)

indoor unit

Error detection

condition(s)

Communication between

Stop of corresponding unit

Signal cannot be transmitted

Stop of corresponding unit

There is no communication

Stop of corresponding unit

Stop of

Indoor corresponding unit

All stop Indoor unit initially

indoor P.C. board and remote controller is disrupted.

from remote controller to indoor unit.

from remote controller (including wireless) or network adaptor.

unit is not receiving

signal from outdoor unit.

communicating normally fails to return signal for specified length of time.

Check items (locations)

Check remote controller

inter-unit tie cable (A / B).

Check for broken wire or

connector bad contact.

Check indoor power

supply.

for defect in indoor

Check

P.C. board.

remote controller

Check

address settings (when two remote controllers are in use).

remote controller

Check

P.C. board.

Check transmission circuit of remote controller.

--- Replace remote controller as necessary.

Check and network adaptor wiring.

Check order in which power was turned on for indoor and outdoor units. Check

setting.

Check

cable. Check resistance setting (SW30, Bit 2).

Check

indoor unit. (Is power turned on?)

Check indoor-outdoor communication cable.

Check connection of communication connectors on indoor P.C. board. Check

communication connectors on outdoor P.C. board.

Check

P.C. board. Check P.C. board (I/F).

internal

remote controller

indoor address

indoor-outdoor tie

outdoor termination

power supply to

connection of

for defect in indoor

for defect in outdoor

E07

I/F Indoor-outdoor

communication circuit error (detected at outdoor end)

All stop Signal cannot be transmitted

from outdoor to indoor units for 30 seconds continuously.

– 65 –

Check outdoor

resistance setting (SW30,

Bit 2).

Check connection

indoor-outdoor

communication circuit.

termination

Main

remote

controller

E08 E08

E09

E10

E12 E12

E15

E16

Check code

Outdoor 7-segment display

Check

code

E15

E16

Sub-code

Duplicated indoor address

I/F Automatic

01: Indoor-outdoor communication 02: Outdooroutdoor communication

00: Overloading 01-: No. of units connected

Location

detection

Indoor unit I/F

Remote controller

Indoor unit

I/F Indoor unit not

I/F Too many

Description System status

Duplicated indoor address

Duplicated master remote controller

Indoor interMCU communication error

address starting error

found during automatic address setting

indoor units connected

All stop Combined capacity of

Error detection

condition(s)

All stop More than one indoor unit is

Stop of corresponding unit

Communication cannot be

Stop of corresponding unit

All stop Indoor automatic address

All stop Indoor unit cannot be

assigned same address.

In two remote controller configuration (including wireless), both controllers are set up as master. (Header indoor unit is shut down with alarm, while follower indoor units continue operating.)

established / maintained upon turning on of power or during communication.

setting is started while automatic address setting for equipment in other refrigerant line is in progress.

Outdoor automatic address setting is started while automatic address setting for indoor units is in progress.

detected after indoor automatic address setting is started.

indoor units exceeds 135 % of combined capacity of outdoor units.

Note: If this code comes up after backup setting for outdoor unit failure is performed, perform "No overloading detected" setting.

< "No overloading detected " setting method> Turn on SW09/Bit 2 on I/F P.C. board of outdoor header unit.

More than 48 indoor units are connected.

Check items (locations)

Check indoor addresses. Check for any change made to remote controller connection (group / individual) since indoor address setting.

Check remote controller settings. Check remote controller P.C. boards.

Check for defect in indoor P.C. board

Perform automatic setting again after disconnecting communication cable to that refrigerant line.

Check connection of indoor-outdoor communication line.

Check for error in indoor power supply system. Check for noise from other devices. Check for power failure. Check for defect in indoor P.C. board.

Check capacities of indoor units connected.

Check combined HP capacities of indoor units. Check HP capacity settings of outdoor units. Check No. of indoor units connected. Check for defect in outdoor P.C. board (I/F).

addres

– 66 –

Main

remote

controller

E18

E19 E19

E20

E23

E25

E26

E28

Check code

Outdoor 7-segment display

Check

code

E20

E23

E25

E26

E28

Sub-code

00:

I/F Error in number No header unit 02: Two or more header units

01: Connection of outdoor unit from other line 02: Connection of indoor unit from other line

Address of outdoor unit from which signal is not received normally

Detected outdoor unit No.

Location

detection

Indoor unit

I/F Connection to

I/F Outdooroutdoor

I/F Duplicated

I/F Dropping out of

I/F Outdoor

Description System status

Stop of

Error in communication between indoor header and follower units

of outdoor header units

other line found during automatic address setting

communication transmission erro

follower outdoor address

outdoor unit

All stop Outdoor header unit receives follower uni error

Error detection

condition(s)

Periodic communication corresponding unit

All stop There is more than one

All stop Equipment from other line is

All stop Signal cannot be transmitted

All stop There is duplication in

All stop Outdoor unit initially

between indoor header and follower units cannot be maintained.

outdoor header unit in one line.

There is no outdoor header

unit in one line.

found to have been connected when indoor automatic address setting is in progress.

to other outdoor units for at least 30 seconds continuously.

outdoor addresses set manually.

communicating normally fails to return signal for specified length of time.

error code from outdoor follower unit.

Disconnect inter-line tie cable

Check items (locations)

Check remote controller

wiring.

Check indoor power supply

wiring.

Check P.C. boards of

indoor units.

Outdoor header unit is outdoor unit to which indoor outdoortie cable (U1,U2) is connected. Check connection of

indoor-outdoor communication line.

Check for defect in outdoor

P.C. board (I/F).

in accordance with automatic address setting method explained in gAddress setting h section.

Check power supply to

outdoor units. (Is power turned on?)

Check connection of tie

cables between outdoor units for bad contact or broken wire.

Check communication

connectors on outdoor P.C. boards.

Check for defect in outdoor

P.C. board (I/F).

Check termination

resistance setting for communication between outdoor units.

Note: Do not set outdoor addresses manually.

Backup setting is being

used for outdoor units.

Check power supply to

outdoor unit. (Is power turned on?)

Check connection of tie

cables between outdoor units for bad contact or broken wire.

Check communication

connectors on outdoor P.C. boards.

Check for defect in outdoor

P.C. board (I/F).

Check check code

displayed on outdoor

follower unit. <Convenient functions> If SW04 is pressed and held for at least 1 second while [E28] is displayed on the 7segmentdisplay of outdoor header unit, the fan of the outdoor unit that has been shut down due to an error comes on. If SW04 and SW05 are pressed simultaneously, the fans of normal outdoor units come on. To stop the fan or fans, press SW05 on its own.

– 67 –

Main

remote

controller

E31

Check code

Outdoor 7-segment display

Check

code

E31

Sub-code

SMMS (Series 1) 01: A3-IPDU1 error 02: A3-IPDU2 error 03: A3-IPDU1/A3IPDU2 error 04: Fan IPDU error 05: A3-IPDU1 + Fan IPDU error 06: A3-IPDU2 + Fan IPDU error 07: All IPDU error or Communication error between IPDU and I/F circuit board or Outdoor I/F circuit board error

SMMS-i (Series 4)

A3-IPDU

1 2 3 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

Symbol O signifies site of IPDU error.

Fan

IPDU

Location

Description System status

detection

I/F IPDU

communication error

Error detection

condition(s)

All stop Communication is disrupted

between IPDUs (P.C. boards) in inverter box.

Check items (locations)

Check wiring and connectors

• involved in communication between IPDU-I/F P.C. board for bad contact or broken wire.

•

Check for defect in outdoor P.C. board (I/F, A3-IPDU or Fan IPDU).

•

Check for external noise.

F01

F02

F03

F04

F05 F05

F06 F06

TE1 sensor error 02: TE2 sensor error

Indoor unit

I/F TD1 sensor

I/F TD2 sensor

I/F TE1/TE2

Indoor TCJ sensor error

Indoor TC2 sensor error

Indoor TC1 sensor error

error

All stop Sen

sensor error

Stop of corresponding unit

top of corresponding unit

Stop of corresponding unit

All stop Sensor resistance is infinity

Sensor resistance is infinity or zero (open / short circuit).

or zero (open / short circuit).

sor resistance is infinity

or zero (open / short circuit).

Check connection of TCJ sensor connector and wiring. Check resistance characteristics of TCJ sensor. Check for defect in indoor P.C. board.

Check connection of TC2 sensor connector and wiring. Check resistance characteristics of TC2 sensor. Check for defect in indoor P.C. board.

Check connection of TC1

sensor connector and wiring. Check resistance characteristics of TC1 sensor.

Check for defect in indoor

P.C. board.

Check connection of TD1

sensor connector.

Check resistance

characteristics of TD1 sensor.

Check for defect in outdoor

P.C. board (I/F).

Check connection of TD2

sensor connector.

Check resistance

characteristics of TD2 sensor.

Check for defect in outdoor

P.C. board (I/F).

Check connection of TE1/TE2

sensor connectors.

Check resistance

characteristics of TE1/TE2

sensors.

Check for defect in outdoor

P.C. board (I/F).

– 68 –

Main

remote

controller

F07 F07

F08

F10

F11

F12

F13

F15

F16

F22

F23

Check code

Outdoor 7-segment display

Check

code

F08

F12

F15

F16

F22

F23

Sub-code

01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side

Location

detection

I/F TL sensor

I/F TO sensor

Indoor unit

I/F TS1 sensor

IPDU TH sensor

I/F Outdoor

I/F TD3 sensor

I/F Ps sensor

Description System status

error

Indoor TA sensor error

Indoor TF sensor error

error

temperature sensor wiring error (TE1, TL)

pressure sensor wiring error (Pd, Ps)

error

Error detection

All stop Sensor resistance is infinity

Stop of corresponding unit

Stop of

corresponding unit

All stop Sensor resistance is infinity

All stop During compressor

All stop Readings of high-pressure

All stop Sensor

All stop Output voltage of Ps

or zero (open / short circuit).

Sensor resistance is infinity or zero (open / short circuit).

or zero (open / short circuit).

operation in HEAT mode, TE1 continuously provides temperature reading higher than indicated by TL by at least specified margin for 3 minutes or more.

Pd sensor and lowpressure Ps sensor are switched. Output voltages of both sensors are zero.

or zero. (open / short circuit)

sensor is zero.

condition(s)

resistance is infinity

Check items (locations)

Check connection of TL sensor

connector.

Check resistance

characteristics of TL sensor.

Check for defect in outdoor

P.C. board (I/F).

Check connection of TO

sensor connector.

Check resistance

characteristics of TO sensor.

Check for defect in outdoor

P.C. board (I/F).

Check connection of TA

sensor connector and wiring.

Check resistance

characteristics of TA sensor.

Check for defect in indoor P.C.

board.

Check connection of TF

sensor connector and wiring.

Check resistance

characteristics of TF sensor.

Check for defect in indoor P.C.

board.

Check connection of TS1

sensor connector

Check resistance

characteristics of TS1 sensor.

Check for defect in

P.C. board (I/F).

Defect in IGBT built-in

temperature sensor → Replace A3-IPDU P.C. board.

Check installation of TE1 and

TL sensors.

Check resistance

characteristics of TE1 and TL sensors.

Check for outdoor P.C. board

(I/F) error.

Check connection of high-

pressure Pd sensor connector.

Check connection of lowp-

ressure Ps sensor connector.

Check for defect in pressure

sensors Pd and Ps.

Check for error in outdoor P.C.

board (I/F).

Check for deficiency in

compressive output of compressor.

Check connection of TD3

sensor

connector.

Check resistance

characteristics of TD3 sensor.

Check for defect in outdoor

P.C. board (I/F).

Check for connection error

involving Ps sensor and Pd sensor connectors.

Check connection of Ps sensor

connector.

Check for defect in Ps sensor. Check for deficiency in

compressive output of compressor.

Check for defect in 4-way

valve.

Check for defect in outdoor

P.C. board (I/F).

Check for defect in SV4 circuit.

outdoor

– 69 –

Check code

Main

remote

controller

F24 F24

F29

F31 F31

H01 H01

H02 H02

H03 H03

H05 H05

H06 H06

*1 Total shutdown in case of header unit Continued operation in case of follower unit

Outdoor 7-segment display

Check

code

Sub-code

01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side

Location

detection

I/F Pd sensor

Indoor unit

I/F Outdoor

IPDU Compressor

IPDU Current

I/F TD1 sensor

I/F Activation of

Description System status

error

Other indoor error

EEPROM error

breakdown

error (lockup) MG-CTT error

detection circuit error

miswiring (incomplete insertion)

low-pressure protection

All stop Output voltage of Pd

Stop of corresponding unit

All stop *1 Outdoor P.C. board (I/F)

All stop Inverter current detection

All stop Overcurrent is

All stop Current flow of at least

All stop Discharge temperature of

All stop Low-pressure Ps sensor

Error detection

condition(s)

sensor is zero (sensor open-circuited). Pd > 4.15 MPa despite compressor having been turned off.

Indoor P.C. board does not operate normally.

does not operate normally.

circuit detects overcurrent and shuts system down.

several seconds after startup of inverter compressor.

specified magnitude is detected despite inverter compressor having been shut turned off.

compressor 1 (TD1) does not increase despite compressor being in operation.

detects operating pressure lower than 0.02 MPa.

detected

Check items (locations)

Check connection of Pd sensor connector. Check for defect in Pd sensor. Check for defect in outdoor P.C. board (I/F).

Check for defect in indoor P.C. board (faulty EEPROM)

Check power supply voltage. Check power supply noise. Check for defect in outdoor P.C. board (I/F).

Check power supply voltage. (380-415V ± 10 %). Check for defect in compressor. Check for possible cause of abnormal overloading. Check for defect in outdoor P.C. board (A3-IPDU).

Check for defect in compressor. Check power supply voltage. (380-415V ± 10 %). Check compressor system wiring, particularly for open phase. Check connection of connectors / terminals on A3IPDU P.C. board. Check conductivity of case heater. (Check for refrigerant entrapment inside compressor.) Check for defect in outdoor P.C. board (A3-IPDU). Check outdoor MG-CTT.

Check current detection circuit wiring. Check defect in outdoor P.C. board (A3-IPDU).

Check installation of TD1 sensor. Check connection of TD1 sensor connector and wiring. Check resistance characteristics of TD1 sensor. Check for defect in outdoor P.C. board (I/F).

Check service valves to confirm full opening (both gas and liquid Check outdoor PMVs for clogging (PMV1, 2). Check for defect in SV2 or SV4 circuits. Check for defect in lowpressure Ps sensor. Check indoor filter for clogging. Check valve opening status of indoor PMV. Check refrigerant piping for clogging. Check operation of outdoor fan (during heating). Check for insufficiency in refrigerant quantity.

MG-CTT: Magnet contactor

sides).

– 70 –

Main

remote

controller

H07 H07

H08 H08

Check code

Outdoor 7-segment display

Check

code

Sub-code

01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error 05: TK5 sensor error

Location

detection

I/F Low oil level

I/F Error in

Description System status

protection

temperature sensor for oil level detection

Error detection

condition(s)

All stop Operating compressor

All stop Sensor resistance is infinity

detects continuous state of low oil level for about 2 hours.

or zero (open / short circuit).

Check items (locations)

Check balance pipe service valve to confirm full opening. Check connection and installation of TK1, TK2, TK3, TK4, and TK5 sensors. Check resistance characteristics of TK1, TK2, TK3, TK4, and TK5 sensors. Check for gas or oil leak in same line. Check for refrigerant entrapment inside compressor casing. Check SV3A, SV3B, SV3C, SV3D, SV3E, and SV3F valves for defect. Check oil return circuit of oil separator for clogging. Check oil equalizing circuit for clogging.

Check connection of TK1 sensor connector. Check resistance characteristics of TK1 sensor. Check for defect in outdoor P.C. board (I/F).

Check connection of TK2 sensor connector. Check resistance characteristics sensor. Check

for defect in outdoor

P.C. board (I/F).

Check connection of TK3 sensor connector. Check resistance characteristics of TK3 sensor. Check for defect in outdoor P.C. board (I/F).

Check connection of TK4 sensor connector. Check resistance characteristics of TK4 sensor. Check for defect in outdoor P.C. board (I/F).

Check connection of TK5 sensor connector. Check resistance characteristics of TK5 sensor. Check for defect in outdoor P.C. board (I/F).

of TK2

– 71 –

Main

remote

controller

H14 H14

H15 H15

Check code

Outdoor 7-segment display

Check

code

Sub-code

Location

detection

I/F Compressor 2

I/F TD2 sensor

Description

case thermo activation

miswiring (incomplete insertion)

System status

All stop Compressor 2 case

All stop Air discharge

Error detection

condition(s)

thermo was activated.

temperature of (TD2) does not increase despite compressor 2 being in operation.

Check items (locations)

Check Compressor 2 case thermo

circuit.

(Connector, Wiring, Circuit board) Open and check the service valve. (Gas side, Liquid side) Check the outdoor PMV clogging

(PMV1, 2).

Check the SV42 circuit. Check the SV4 circuit (SV41 / 42

miswiring). Check the opening status of indoor

PMV.

Check the four-way valve error. Check the refrigerant shortage.

Check installation of TD2 sensor.

Check connection of TD2 sensor connector

and wiring.

Check resistance characteristics of TD2

sensor.

Check for defect in outdoor P.C. board (I/F).

– 72 –

Main

remote

controller

H16 H16

Check code

Outdoor 7-segment display

Check

code

Sub-code

SMMS (1 series) 01: TK1 oil circuit error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error

SMMS-i (4 series) 01: TK1 oil circuit

error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error 05: TK5 oil circuit error

Location

detection

I/F Oil detection

I/F Oil level

Description

circuit error

detection circuit error

System status

All stop The temperature

All stop No temperature

Error detection

condition(s)

change of TK1 cannot be detected even after Compressor 1 starts operating.

change of TK2 cannot be detected even after Compressor 2 starts operating.

The temperature change of TK3 cannot be detected even after Compressor 3 starts operating.

The temperature change of TK4 cannot be detected even after Compressor 4 starts operating, or the temperature difference from that of the other TK sensor changes only in the specified range for a given time or longer.

change is detected by TK1 despite compressor 1 having been started.

No temperature change is detected by TK2 despite compressor 2 having been started.

No temperature change is detected by TK3 despite compressor 3 having been started.

Check items (locations)

e TK1 sensor installation.

Check th

e TK1 sensor resistant

Check th characteristics. Check the TK3, or TK4. Check the Check the and non-return valve error Check the compressor.

Check th Check th characteristics. Check the TK3, or TK4. Check the Check the and non-return valve error. Check the compressor.

Check for Check resistance characteristics of TK1 sensor. Check for TK1, TK2, TK3, TK4, and TK5 sensors Check for faulty operation in SV3E or SV3F Check for cl circuit capillary and faulty operation in check valve. Check for compressor.

Check for Check resistance characteristics of TK2 sensor. Check for TK1, TK2, TK3, TK4, and TK5 sensors Check for faulty operation in SV3E or SV3F Check for circuit capillary and faulty operation in check valve. Check for compressor.

Check for Check resistance characteristics of TK3 sensor. Check for TK1, TK2, TK3, TK4, and TK5 sensors Check for faulty operation in SV3E or SV3F Check for circuit capillary and faulty operation in check valve. Check for compressor.

misconnection of TK1, TK2,

SV3E valve error. oil circuit capillary clogging

hibernating refrigerant in

e TK2 sensor installation. e TK2 sensor resistant

misconnection of TK1, TK2,

SV3E valve error. oil circuit capillary clogging

hibernating refrigerant in

e TK3 sensor installation. e TK3 sensor resistant

misconnection of TK1, TK2,

SV3E valve error. oil circuit capillary clogging

hibernating refrigerant in

e TK4 sensor installation. e TK4 sensor resistant

misconnection of TK1, TK2,

SV3E valve error. oil circuit capillary clogging

hibernating refrigerant in

disconnection of TK1 sensor.

connection error involving

valve.

ogging in oil equalizing

refrigerant entrapment inside

disconnection of TK2 sensor.

connection error involving

valve.

clogging in oil equalizing

refrigerant entrapment inside

disconnection of TK3 sensor.

connection error involving

valve.

clogging in oil equalizing

refrigerant entrapment inside

– 73 –

Main

remote

controller

H16 H16

H25 H25

L02 L02

L03

L04 L04

L05

L06 L06

L07

L08 L08

L09

Check code

Outdoor 7-segment display

Check

code

Sub-code

SMMS-i (4 series) 01: TK1 oil circuit error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error 05: TK5 oil circuit error

No. of priority indoor units

Location

detection

I/F Oil level

I/F TD3 sensor

Indoor unit

I/F Duplicated

Indoor unit

Description

detection circuit error

miswiring (incomplete insertion)

Outdoor unit model mismatch error

Duplicated indoor header unit

outdoor line address

priority indoor unit (as displayed on priority indoor unit)

priority indoor unit (as displayed on indoor unit other than priority indoor unit)

Connection of group control cable to standalone indoor unit

Indoor group / addresses not set

Indoor capacity not set

System status

All stop No temperature

All stop Air discharge

Only the target unit stopped

Stop of corresponding unit

All stop There is duplication

All stop More than one

Stop of corresponding unit

Error detection

condition(s)

change is detected by TK4 despite compressor having been started.

No temperature change is detected by TK5 despite compressor having been started.

temperature (TD3) does not increase despite compressor 3 being in operation.

An error was found

on the outdoor unit model.

There is more than one header unit in group.

in line address setting for outdoor units belonging to different refrigerant piping systems.

indoor unit has been set up as priority indoor unit.

indoor unit have been set up as priority indoor unit.

There is at least one stand-alone indoor unit to which group control cable is connected.

Address setting has not been performed for indoor units.

Capacity setting has not been performed for indoor unit.

Check items (locations)

Check for disconnection of TK4 sensor. Check resistance characteristics of TK4 sensor. Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors Check for faulty operation in SV3E or SV3F valve. Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. Check for refrigerant entrapment inside compressor.

Check for disconnection of TK5 sensor. Check resistance characteristics of TK5 sensor. Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors Check for faulty operation in SV3E valve. Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. Check for refrigerant entrapment inside compressor.

Check installation of TD3 sensor. Check connection of TD3 sensor connector and wiring. Check resistance characteristics of TD3 sensor. Check for defect in outdoor P.C. board (I/F).

Check the model name of the outdoor unit. Check the miswiring of the communication line between indoor and outdoor.

Check indoor addresses. Check for any change made to remote controller connection (group / individual) since indoor address setting.

Check line addresses.

Check display on priority indoor unit.

Check displays on priority indoor unit and outdoor unit.

Check indoor addresses.

Note: This code is displayed when power is turned on for the first time after installation.

Set indoor capacity. (DN = 11)

– 74 –

Main

remote

controller

L10 L10

L17 L17

L18 L18

L20

L28 L28

Check code

Outdoor 7-segment display

Check

code

Sub-code

Target indoor address

Location

Description System status

detection

I/F Outdoor

I/F Outdoor unit

I/F Cool / heat

AI-NET Indoor unit

I/F Too many

I/F Error in No. of

capacity not set

model mismatch error

switch unit error

Duplicated central control address

outdoor units connected

IPDUs

Error detection

condition(s)

All stop Jumper wire provided on P.C.

Only the target unit stopped

All stop There is duplication in central

All stop There are more than four

All stop Insufficient number of IPDUs

board for servicing I/F P.C. board has not been removed as required for given model.

The outdoor unit model is duplicate. The Cool/Heat Flex series 1/2 are duplicate.

The heating operation was

performed without the coolonly setting configured in a cool-only r heat switch unit is not connected.

oom wh

ere a cool/

control address setting.

outdoor units.

are detected when power is turned on.

Check items (locations)

Check model setting of P.C. board for servicing outdoor I/F P.C. board.

Check the outdoor unit model.

Check the remote controller setting. (DN="0F") Check the cool / heat switching unit. Check the piping connection of the switching unit. (Miswiring of discharge gas / suction gas) Check the SVS / SVD valve miswiring / misinstallation.

Check central control addresses. Check network adaptor P.C. board (applicable to AI-NET).

Check No. of outdoor units connected (Only up to 4 units

per system allowed). Check communication lines between outdoor units. Check for defect in outdoor P.C. board (I/F).

Check model setting of P.C. board for servicing outdoor I/F P.C. board. Check connection of UART communication connector. Check A3-IPDU, fan IPDU,

P.C. board for

and I/F defect.

L29 L29

SM (Series 4)

MS-i

A3-IPDU

Fan

IPDU

1 2 3 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

Symbol O signifies site of IPDU error.

– 75 –

Main

remote

controller

L30 L30

P01

P03 P03

P04 P04

Check code

Outdoor 7-segment display

Check

code

L31

Sub-code

Detected indoor address

01: Compressor 1 side 02: Compressor 2 sid

e 03: Compressor 3 side

Location

detection

Indoor unit

I/F Extended IC

Indoor unit

I/F Discharge

IPDU Activation of

Description System status

External interlock of indoor unit

error

Indoor fan motor error

temperature TD1 error

high-pressure SW

Error detection

condition(s)

Stop of corresponding unit

Continued operation

Stop of corresponding unit

All stop Discharge temperature (TD1)

All stop High-pressure SW is

Signal is present at external error input terminal (CN80) for 1 minute.

There is part failure in P.C. board (I/F).

exceeds 115 ”C.

activated.

Check items (locations)

When external device is

connected to CN80 connector:

1) Check for defect in external device.

2) Check for defect in indoor P.C. board. When external device is not connected to CN80 connector:

1) Check for defect in indoor P.C. board.

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

Check the lock of fan motor (AC fan). Check wiring.

Check outdoor service valves (gas side, liquid side) to confirm full opening. Check outdoor PMVs (PMV1, 2, 4) for clogging. Check resistance characteristics of TD1 sensor. Check for insufficiency in refrigerant quantity. Check for defect in 4-way valve. Check for leakage of SV4 circuit. Check SV4 circuit (wiring or installation error in SV41, SV42 or SV43).

Check connection of highpressure SW connector. Check for defect in Pd pressure sensor. Check outdoor service valves (gas side, liquid side) to confirm full opening. Check for defect in outdoor fan. Check for defect in outdoor fan motor. Check outdoor PMVs (PMV1, 2) for clogging. Check indoor / outdoor heat exchangers for clogging. Check for short-circuiting of outdoor suction / discharge air flows. Check SV2 circuit for clogging. Check for defect in outdoor P.C. board (I/F). Check for error in indoor fan system (possible cause of air flow reduction). Check opening status of indoor PMV. Check indoor-outdoor communication line for wiring error. Check for faulty operation of check valve in discharge pipe convergent section. Check gas balancing SV4 valve circuit. Check SV5 valve circuit. Check for refrigerant overcharging.

– 76 –

Main

remote

controller

P05 P05

P07

P10 P10

P12

Check code

Outdoor 7-segment display

Check

code

P07

Sub-code

SMMS (Series 1) 01: Open phase detected 02: Phase sequence error

SMMS-i (Series 4) 00:

01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side

Detected indoor address

Location

detection

I/F Open phase detected,

I/F Detection of open

IPDU I/F

Indoor unit

Description

Phase sequence error

phase / phase sequence

Inverter DC voltage (Vdc) error (compressor) MG-CTT error

Heat sink overheating error

Indoor overflow error All stop Float switc

Indoor fan motor error Stop of

System status

All stop Phase sequence

All stop Open phase

All stop Temperature sensor

corresponding unit

Error detection

condition(s)

error was detected when the power is turned on. Open phase was detected when the power is turned on.

detected when power is turned on. Inverter DC voltage (overvoltage) or too low (undervoltage).

built into IGBT (TH) is overheated.

operates. Float switch is open-circuited or disconnected at connector.

Motor spee measurements continuously deviate from target value. Overcurrent protection i activated.

error

is too high

circuit

Check items (locations)

Check the outdoor power wiring. Check the (I/F) error.

Check for P.C. board (I/F).

Check power Check outdoor error. Chec for clogging. Check IGBT thermal performance for faulty installation. (e.g. mounting screws and thermal conductivity) Check for (faulty IGBT built-in temperature sensor (TH))

Check float Check operation pump. Check drain Check drain Check for P.C. board.

Check connection connector and wiring. Check for Check for P.C. board. Check impact treatment (OA).

Chec

phase sequence of

outdoor PC board

defect in outdoor

supply voltage.

fan system

k heat sink cooling duct

and heat sink for

defect in A3-IPDU.

switch connector.

of drain

pump circuit.

pipe for clogging.

defect in indoor

of fan

defect in fan motor. defect in indoor

of outside air

k static pressure setting.

MG-CTT: Magnet contactor

– 77 –

Main

remote

controller

P13 P13

P15 P15

P17 P17

P18 P18

Check code

Outdoor 7-segment display

Check

code

Sub-code

01: TS condition

02: TD condition

Location

detection

I/F Outdoor liquid

I/F Gas

I/F Gas leak

I/F Discharge

Description System status

backflow detection error

leakdetection (TS1 condition)

detection (TD condition)

temperature TD2 error

temperature TD3 error

Error detection

condition(s)

All stop <During cooling operation>

All stop Protective shutdown due to

All stop Discharge temperature (TD2)

All stop Discharge temperature (TD3)

When system is in cooling operation, high pressure is detected in follower unit that has been turned off. <During heating operation> When system is in heating operation, outdoor PMV 1 or 2 continuously registers opening of 100p or less while under SH control.

sustained suction temperature at or above judgment criterion for at least 10 minutes is repeated four times or more. <TS error judgment criterion> In cooling operation: 60 In heating operation: 40

sustained discharge temperature (TD1, TD2 or TD3) at or above 108 least 10 minutes is repeated four times or more.

exceeds 115

”

C for at

Check items (locations)

Check full-close operation of outdoor PMV (1, 2, 4). Check for defect in Pd or Ps sensor. Check gas balancing circuit (SV2) for clogging. Check balance pipe. Check SV3B circuit for clogging. Check defect in outdoor P.C. board (I/F). Check capillary of oil separator oil return circuit for clogging. Check for leakage of check valve in discharge pipe convergent section.

Check for insufficiency in refrigerant quantity. Check outdoor service valves (gas side, liquid

confirm full

side) to opening. Check PMVs (PMV1, 2) for clogging. Check resistance characteristics of TS1 sensor. Check for defect in 4-way valve. Check SV4 circuit for leakage

Check for insufficiency in refrigerant quantity. Check PMVs (PMV 1, 2) for clogging. Check resistance characteristics of TD1, TD2 and TD3 sensors. Check indoor filter for clogging. Check piping for clogging. Check SV4 circuit (for leakage or coil installation error).

Check outdoor service valves (gas side, liquid side) to confirm full opening. Check outdoor PMVs (PMV1, 2, 4) for clogging. Check resistance characteristics of TD2 sensor. Check for defect in 4-way valve. Check SV4 circuit for leakage. Check SV4 circuit (for wiring or installation error involving SV41, SV42 and SV43).

Check outdoor service valves (gas side, liquid side) to confirm full opening. Check outdoor PMVs (PMV1, 2, 4) for clogging. Check resistance characteristics of TD3 sensor. Check for defect in 4-way valve. Check SV43 circuit for leakage. Check SV4 circuit (for wiring or installation error involving SV41, SV42 and SV43).

– 78 –

Main

remote

controller

P19 P19

P20 P20

Check code

Outdoor 7-segment display

Check

code

Sub-code

Detected outdoor unit No.

Location

detection

I/F 4-way valve

I/F Activation of

Description System status

reversing error

high-pressure protection

Error detection

condition(s)

All stop Abnormal refrigerating cycle

All stop Pd sensor detects pressure

data is collected during heating operation.

equal to or greater than

3.6 MPa.

Check items (locations)

Check for defect in main body of 4-way valve. Check for coil defect in 4way valve and loose connection of its connector. Check resistance characteristics of TS1 and TE1 sensors. Check output voltage characteristics of Pd and Ps pressure sensors. Check for wiring error involving TE1 and TL sensors.

Check for defect in Pd pressure sensor. Check service valves (gas side, liquid side) to confirm full opening. Check for defect in outdoor fan. Check for defect in outdoor fan motor. Check outdoor PMVs (PMV1, 2, 4) for clogging. Check indoor / outdoor heat exchangers for clogging. Check for short-circuiting of outdoor suction / discharge air flows. Check SV2 circuit for clogging. Check for defect in outdoor P.C. board (I/F). Check for defect in indoor fan system (possible cause of air flow reduction). Check opening status of indoor PMV. Check indoor-outdoor communication line for wiring error. Check for faulty operation of check valve in discharge pipe convergent section. Check gas balancing SV4 valve circuit. Check SV5 valve circuit. Check for refrigerant overcharging.

– 79 –

Main

remote

controller

P22 P22

Check code

Outdoor 7-segment display

Check

code

Sub-code

SMMS (Series 1) 08: Out of step 0A: IDC activation 0E: Sync error 0F: Control error 06: Maximum rotation exceeded 04: Rotation difference error 0D: Lock 0C: Fan lock

Location

detection

PDU Outdoor fan

Description System status

IPDU error

Error detection

condition(s)

All stop (Sub code: 08)

All stop (Sub code: 0A)

All stop (Sub code: 0E)

All stop (Sub code: 0F)

All stop (Sub code: 06)

All stop (Sub code: 04)

All stop (Sub code: 0D)

All stop (Sub code: 0C)

FAN IPDU position detection circuit Position detection is not performed properly.

FAN IPDU overcurrent protection circuit Overcurrent was detected when the fan started running or during operation.

FAN IPDU position detection circuit Position detection is not performed properly.

External factors such as blast Position detection is no performed properly. (Restarted in 6 seconds)

External factors such as blast The difference between targeted rotation and actual rotation is 25% or more. (Restarted in 6 seconds)

FAN IPDU position detection circuit Position detection is not performed properly. (No wind)

External factors such as blast Position detection is not performed properly. (Wind blows) (Restarted in 6 seconds)

Check items (locations)

Check the Check the connection for fan motor. Check the board for fan.

Check the Check the board for fan.

Check the Check the connection for fan motor. Check the board for fan.

Check the Check the board for fan.

Check the Check the

board for fan.

Check the Check the connection for fan motor. Check the board for fan.

Check the Check the

board for fan.

fan motor. connector

error of IPDU

fan motor. error of IPDU

fan motor. connector

error of IPDU

fan motor. connector

error of IPDU

fan motor. error of IPDU

fan motor. connector

error of IPDU

fan motor. error of IPDU

– 80 –

Main

remote

controller

P22 P22

P26 P26

P29 P29

P31

Check code

Outdoor 7-segment display

Check

code

Sub-code

SMMS-i (Series 4) 0

∗

: IGBT circuit

∗

: Position detection circuit error 3

∗

: Motor lockup error 4

∗

: Motor current detection C

∗

: TH sensor temperature error D

∗

: TH sensor error E

∗

: Inverter DC voltage error (outdoor fan)

Note: Although letters 0 to F appear at locations indicated by "

∗ "

, please

ignore them.

01: Compressor 1 side 02: Compressor 2 sid

e 03: Compressor 3 side

01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side

Location

detection

IPDU Outdoor fan

IPDU G-TR shortcircuit

IPDU Compressor

Indoor unit

Description System status

IPDU error

protection error

position detection circuit error

Other indoor error (group follower unit error)

Error detection

condition(s)

All stop

All stop Overcurrent is momentarily

All stop Position detection is not

Stop of corresponding unit

(Sub code: 0 Fan IPDU over current protection circuit Flow of current equal to or greater than the specified value is detected during startup of the fan.

(Sub code: 1 Fan IPDU position detection circuit Position detection is not going on normally.

(Sub code: 3 Gusty wind, an obstruction, or another external factor Speed estimation is not going on normally.

(Sub code: 4 Fan IPDU over current protection circuit Flow of current greater than the specified value is detected during operation of the fan.

(Sub code: C Higher temperature than the specified value is detected during operation of the fan.

(Sub code: D The resistance value of the sensor is infinite or zero (open or short circuit).

(Sub code: E Fan IPDU DC voltage

protection circuit The DC voltage higher or lower than the specified value is detected.

detected during startup of compressor.

going on normally.

There is error in other indoor unit in group, resulting in detection of E07/L07/L03/ L08.

∗

)

∗

)

∗

)

∗

)

equal to or

∗

)

∗

)

∗

)

Check items (locations)

Check fan motor. Check for defect in fan IPDU P.C. board.

Check fan motor. Check connection of fan motor connector. Check for defect in fan IPDU P.C. board.

Check fan motor. Check for defect in fan IPDU P.C. board.

Check fan motor. Check connection of fan motor connector. Check for defect in fan IPDU P.C. board.

Check fan motor. Check for defect in fan IPDU P.C. board.

Check for defect in fan IPDU P.C. board.

Check power voltage of the main power supply. Check for defect in fan IPDU P.C. board. Check connection of fan IPDU P.C. board.

Check connector connection and wiring on A3-IPDU P.C. board.

Check for defect in compressor (layer shortcircuit).

Check for defect in outdoor P.C. board (A3IPDU).

Check wiring and connector connection. Check for compressor layer short-circuit. Check for defect in A3IPDU P.C. board.

Check indoor P.C. board.

– 81 –

Errors detected by TCC-LINK central control device

Main

remote

controller

C06

C12

P30

Check code

Outdoor 7-segment display

Check

code

–50C

Differs according to nature of alarm-causing error

(L20 displayed.)

Sub-code

Location

detection

TCC-LINK TCC-LINK

Generalpurpose device I/F

TCC-LINK Group control

Description System status

central control device transmission error

TCC-LINK central control device reception error

Blanket alarm for generalpurpose device control interface

follower unit error

Duplicated central control address

Continued operation

Error detection

condition(s)

Central control device is unable to transmit signal.

Central control device is unable to receive signal.

Error signal is input to control interface for general-purpose devices.

Error occurs in follower unit under group control. ([P30] is displayed on central control remote controller.)

There is duplication in central control ad

dresses.

Check items (locations)

Check for defect in central control device. Check for defect in central control communication line. Check termination resistance setting.

Check for defect in central control device. Check for defect in central control communication line. Check termination resistance setting Check

power supply for devices at other end of central control communication line. Check defect in P.C. boards of devices at other end of central control communication line.

Check error input.

Check check code of unit that has generated alarm.

Check address settings.

– 82 –

Part name

Concealed Duc Fan motor

t type

Checking procedure

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

ICF-340W150-2

(MMD-AP0076BHP1

ICF-340W150-1

MMD-AP0246BHP1

(

ICF-340W250-1

MMD-AP0366BHP1

(

P0096BHP1

AP0126BHP1 AP0156BHP1 AP0186BHP1

P0276BHP1

0276BHP1

0486BHP1

AP0566BHP1

∗

∗ ∗ ∗

)

∗

Fan motor inside wiring diagram

∗

∗ ∗

∗

)

Red

White

2 3

Black

4 5

ICF-340W150-1, 2

Position

Black–Red

Black–White

Red–White

ICF-340W250-1

Position

Black–Red

Black–White

Red–White

Resistance value

14.8 ± 1.5 Ω

Resistance value

12.4 ± 1.2 Ω

Under 20 ˚C

– 83 –

9-5. Sensor characteristics

Indoor unit

Temperature sensor characteristics

Indoor TA sensor

Resistance

[kΩ]

Indoor TC1 sensor

200

150

Resistance [kΩ] (10˚C or below)

100

–30

20 30 40 50

Temperature [˚C]

–20 –10 0 10 20 30 40 50 60 70 80 90 100

Temperature [˚C]

Resistance [kΩ] (10˚C or above)

Temperature [˚C]

5 10 15 20 25 30 35 40 45 50 55 60

Temperature [˚C]

–20 –15 –10

–5

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95

100

Resistance [kΩ]

33.9

26.1

20.3

15.9

12.6

10.0

8.0

6.4

5.2

4.2

3.5

2.6

2.4

Resistance [kΩ]

99.9

74.1

55.6

42.2

32.8

25.4

19.8

15.6

12.4

10.0

8.1

6.5

5.3

4.4

3.6

3.0

2.5

2.1

1.8

1.5

1.3

1.1

1.0

0.8

0.7

Indoor TC2 and TCJ sensors

200

150

Resistance [kΩ] (10˚C or below)

100

–30

–20 –10 0 10 20 30 40 50 60 70 80 90 100

Temperature [˚C]

– 84 –

Resistance [kΩ] (10˚C or above)

Temperature [˚C]

–20 –15 –10

–5

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Resistance [kΩ]

115.2

84.2

62.3

46.6

35.2

26.9

20.7

16.1

12.6

10.0

8.0

6.4

5.2

4.2

3.5

2.8

2.4

2.0

1.6

1.4

1.2

10. P.C. BOARD EXCHANGE PROCEDURES

Indoor unit

10-1. Replacement of indoor P.C. boards

Part code Model type P.C. board type

43T6V689

MMD-AP∗∗6 BHP1∗s eries

Points to note when replacing indoor P.C. board assembly

The electrically erasable programmable read-only memory (hereinafter EEPROM) mounted on an indoor P.C. board holds important setting data, including the type and capacity codes intrinsic to the model (set at the factory), as well as the line / indoor / group addresses, high ceiling adjustment setting and the like (during installation, either automatically or manually). Proceed with the replacement of an indoor P.C. board assembly in accordance with the procedure described below. After completion of the work, check the settings again, including the indoor unit No. and group header / follower designation, and confirm the integrity of the refrigerating cycle by conducting a test operation, etc.

Method 1

If it is possible to turn on the indoor unit and read the setting data from the P.C. board to be replaced via a wired remote controller -

MCC-1631

Reading EEPROM data: Procedure 1

Replacing P.C. board and turning on power: Procedure 2

Writing EEPROM data in new EEPROM: Procedure 3

Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation)

– 85 –

Method 2

If it is not possible to turn on the indoor unit or read the setting data from the P.C. board to be replaced via a wired remote controller or operate the remote controller due to the failure of its power supply circuit -

Replacing EEPROM (For the location of this component and the method to replace it, see the “ EEPROM location diagram” section.)

• The EEPROM on the P.C. board to be replaced needs to be removed and mounted on the service P.C. board.

Replacing P.C. board and turning on power: Procedure 2

Reading EEPROM data: Procedure 1

• If data cannot be read, go to Method 3.

Replacing EEPROM again (For the location of this component and the method to replace it, see the “EEPROM location diagram” section.)

• The old EEPROM, supplied with the P.C. board to be replaced and now mounted on the service P.C. board, needs to be replaced with the new EEPROM, supplied with the service P.C. board.

Replacing P.C. board and turning on power: Procedure 2

Writing EEPROM data in new EEPROM: Procedure 3

Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation)

Method 3

If it is not possible to read the setting data due to the failure of the EEPROM itself Replacing P.C. board and turning on power: Procedure 2

Writing EEPROM data on basis of information supplied by customer (e.g. External static pressure selection setting and optional connection setting): Procedure 3

Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation)

EEPROM is attached to IC socket. To remove it, use a pair of tweezers, etc. To attach EEPROM, arrange the direction as shown in the following figures. ” In exchanging time, pay attention not to bend the lead wire of IC.

Cut out

EEPROM

Cut out

IC socket

EEPROM

J01

IC503

SW501

CN73 (RED)

T01

C08

IC101

C09

– 86 –

Procedure 1: reading setting data from EEPROM

(Read the setting data from EEPROM, including both the factory settings and any modifications made to them on site.)

1 Push the

SET

+ CL buttons simultaneously and hold for at least 4 seconds. (This number

corresponds to the same number shown on the Remote Controller Operation Diagram.)

* In the case of group control, the unit No. displayed first is the indoor unit No. of the header unit.

At the same time, the CODE No. (DN code) 10 is displayed, and the fan of the selected indoor unit comes on, with the louver swinging, depending on the model.

2 Each time the

UNIT LOUVER

button (left side of the button) is pushed, one of the indoor unit No.

under group control is displayed in turn.

* The fan of the selected indoor unit comes on, with the louvers swinging, depending on the model.

3 The

TEMP.

button allows you to move the CODE No. (DN code) up / down by one place.

4 First, change the CODE No. (DN code) from 10 to 01. (To set filter sign lighting time)

Jot down the setting data displayed.

5 Change the CODE No. (DN code) using the

Again, jot down the setting data displayed.

TEMP.

button.

6 Repeat step 5 until all the setting data has been jotted down. (See the CODE No. list.)

* CODE No. (DN code) go from 01 to FF with a few gaps along the way.

7 When finished, push the

(It takes the system about 1 minute to become responsive to remote controller operation.)

CODE No. (DN code) necessary at minimum

button to bring the system back to normal off state.

Contents

Type

Indoor unit capacity

Line address

Indoor address

Group address

The type and capacity of the indoor unit are necessary for fan speed setting.

Remote controller operation diagram

3 5

<Fig. 1 RBC-AMT32E>

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

UNIT LOUVER

VENT

3 5

<Fig. 2 RBC-AMS41E>

TEMP.

TIMER SET

FILTER RESET

TEST

SET

TIME

ON / OFF

FAN

MODE

SAVE

VENT

SWING/FIX

UNIT LOUVER

6 12

6 1

– 87–

Procedure 2: replacing P.C. board

1 Replace the faulty P.C. board with a service P.C. board.

Be sure to replicate the old jumper setting (removal), switch setting (SW501), and connector short-circuit setting (e.g. CN34) on the service P.C. board. (See the diagram at below.)

CAUTION

Don’t remove the materials. No materials. The power I.C. (IC101) may break.

< The front of the P. C. Board>

CN73

J01

(RED)

IC503

SW501

Perform the same setting of the jumper wire(J01) setting(cut), switch(SW501) as the setting of the P. C. board before replacement

T01

IC101

< The Back of the P. C. Board>

C08

C09

Materials

2 It is necessary to establish a one-to-one correspondence between the indoor unit being

serviced and the remote controller.

Turn on the indoor unit using one of the methods described below according to the system configuration.

(1) Single (stand-alone) operation

Turn on the indoor unit and proceed to Procedure 3.

(2) Group operation

A)If it is possible to selectively turn on the indoor unit being serviced

Turn on the indoor unit being serviced and proceed to Procedure 3.

B)If it is not possible to selectively turn on the indoor unit being serviced (Case 1)

a) Temporarily disconnect the group control wiring from terminals A and B of the indoor unit being serviced. b) Connect the remote controller wiring to the terminals, turn on the indoor unit, and proceed to Procedure 3. * If this method cannot be used, proceed to the alternative method described below (Case 2).

C)If it is not possible to selectively turn on the indoor unit being serviced (Case 2)

a) Remove the CN41 connectors of all other indoor units in the same group. b) Turn on the indoor unit and proceed to Procedure 3.

Case 1

Case 2

Remove CN41 connectors of all other indoor units in same group.

Indoorunit

P.C. board

A B A B A B

P.C. board

A B A B

Indoorunit

Group contrpl wiring

Indoorunit

CN 41

Group contrpl wiring

Indoorunit (one being serviced)

P.C. board

Indoorunit (one being serviced)

P.C. board

A B

Service P.C. board

Remote

controller

Service P.C. board

Remote

controller

Remove group control wiring from terminals A and B of indoor unit being serviced, and connect remote controller wiring.

* Be sure to restore the temporarily removed group control wiring and CN41 connectors to their initial states

after Procedure 3 has been completed.

– 88 –

Procedure 3: writing setting data in EEPROM

6, 8

00 04

3- 3

(The EEPROM of the service P.C. board has been set to the factory default values.)

1 Push the

for at least 4 seconds. (This number corresponds to the same number shown on the Remote Controller Operation Diagram.)

(Under UNIT No., ALL is displayed.) At the same time, the CODE No. (DN code) 10 is displayed, and the fan of the indoor unit comes on, with the louver swinging, depending on the model.

2 Push the left part of the

button) to display the indoor unit No. one by one in the group control. Specify the indoor unit No. whose service PC board was replaced.

(This operation is not available if the UNIT No. shows

3 The

(DN code) up / down by one place.

TEMP.

4 First, set the type and capacity codes of the indoor unit.

(Changing the type and capacity codes in EEPROM overwrites the factory default settings.)

(1) Set the CODE No. (DN code) to 10 (no change) (2) Use the button to select the type.

(For example, 0001 is for the 4-way cassette type.) - See the CODE No. list. (3) Push the (4) Use the

(5) Use the button to set the capacity code.

(For example, 0012 is for the 027 type.) - See the CODE No. list. (6) Push the (7) Push the

SET

TEMP.

SET

+ CL buttons simultaneously and hold

UNIT LOUVER

button allows you to moved the CODE No.

button. (The display should change from flashing to steady.)

button to set the CODE No. (DN code) to 11.

button. (The display should change from flashing to steady.)

button to bring the system back to normal off state.

button (left side of the

ALLALL

ALL

ALLALL

– (1, 5)

– (7)

<Fig. 1 RBC-AMT32E>

00 04

– (3, 6)

<Fig. 1 RBC-AMT32E>

5 Next, write any setting changes made on-site after

installation, such as address settings, in the EEPROM. Perform the tasks specified in step 1 again.

6 Use the

01 (To set filter sign lighting time)

TEMP.

button to set the CODE No. (DN code) to

7 Check the value displayed with the value jotted down in

Procedure 1 and information proved by the customer.

(1) If there is a discrepancy, change the setting in accordance with

the jotted-down value, and push the button.

(The display should change from flashing to steady.)

(2) If there is no discrepancy, do nothing.

8 Use the

Again, check the value, and change the setting if necessary.

TEMP.

button to change the CODE No. (DN code).

9 Repeat steps 6 and 7 until all the settings are checked. 10

When finished, push the

In the case of group operation, turn the unit off, reconnect the indoor-indoor group control wiring and CN41 connectors, and turn on all the indoor units. (It takes the system about 1 minute to become responsive to remote controller operation.)

* CODE No. (DN code) go from 01 to FF with a few gaps along the way. If you realize you have wrongly corrected a certain setting after pushing the initial value by pushing the

button to bring the system back to normal off state.

SET

button, you can recover the

button, provided that the CODE No. (DN code) is yet to be changed.

3- 3

– 89 –

CODE No. list (Example)

CODE No. (DN)

Filter sign lighting time

Filter pollution leve

Central control address

Heating suction temperature shift

Existence of automatic COOL/HEAT mode

Cooling only

Type

Indoor unit capacity

System address

Indoor unit address

Group address

Temperature range of cooling / heating automatic SW control point

Power failure automatic recovery

Vent Fan (Single operation)

Sensor SW (Selection of static pressure)

High ceiling select

Timer setting (wired remote controller)

Swing mode

Power save operation

Item

Setting data Factory-set value

Depending on Type

0000: standard

0099: Not determined

0002: +2 ‹C (Floor standing type: 0)

0001: No auto mode cooling / heating

0000: Heat pump

Depending on model type

Depending on capacity type

0099: Not determined

0003: 3 deg (Ts } 1.5)

0000: None

0000: Not possible

0000: Body sensor

0000: Standard

0000: Available

0001: Standard

* Automatically selection

by connected outdoor unit

Type Code No. [10]

Setting data Setting data Model Setting data ModelType Model abb. name

0004 Concealed Duct Standard MMD-AP

BHP 0000*

∗∗∗

Indoor unit capacity CODE No. [11]

Invalid

0001

0002

0003

0004

0005

0006

0007

0008

0009

0010

0011

0012

0013

0014

0015

007 type

—

009 type

—

012 type

—

015 type

—

018 type

—

024 type

027 type

030 type

—

036 type

0016

0017

0018

0019

0020

0021

0022

0023

0024

0025

0026

0027

0028

0034

—

048 type

056 type

—

072 ype

—

096 type

—

– 90 –

11. DETACHMENTS

WARNING

Be sure to stop operation of the air conditioner before

work and then turn off switch of the breaker.

Be sure to put on gloves during working time; otherwise an injury will be caused by a part, etc.

CAUTION

NOTE

In a section, Detachments, the models are expressed as follows for convenience.

AP007: MMD-AP0076BHP1-E(TR) to AP0186BHP1-E(TR)

AP024: MMD-AP0246BHP1-E(TR) to AP0306BHP1-E(TR)

AP036: MMD-AP0366BHP1-E(TR) to AP0566BHP1-E(TR)

No. Part name Procedure Remarks

Air filter

1. Detachment

1) Slide the filter toward the opposite side of the arrow mark and then pull out the filter. (In the case that two filters are provided, pull out the first filter, then the second filter will be pulled out connected with the first filter.)

2. Attachment

1) Insert the filter in the filter rail toward the arrow mark, slide it until the filter stops and then fix it. (In the case that two filters are provided, insert the second filter in the same direction after inserting the first filter.)

Back air intake

Air filter

Arrow mark

Under air intake

Air filter

– 91 –

No. Part name Procedure Remarks

Suction panel

1. Detachment

1) Remove the fixing screws A which fix the suction panel. Loosen the fixing screws B.

2) Slide the suction panel to the arrow side and then remove the panel.

2. Attachment

1) Hook the suction panel to the fixing screws B and tighten screws.

2) Attach the removed screws A to the original positions.

Under air intake

AP007 Type AP024 Type AP036 Type

Suction panel

Fixing screws B Fixing screws B

Back air intake

Fixing screws B Fixing screws B

Suction panel

Fixing screws AFixing screws A Fixing screws A

Suction panel

Fixing screws B

Fixing screws A Fixing screws A

Electric parts box cover

1. Detachment

1) Remove the screw A of the electric parts box cover to loosen screw B.

2) As shown in the right figure, when sliding it toward arrow direction and pulling to this side, the electric parts cover opens using the hinge part as a shaft.

3) Take off the slit of the electric parts box cover from the projection of the side plate and then remove the cover.

2. Attachment

1) Hook the slit of the electric parts box cover to the projection of the side plate, close the cover, enter screw B in the Key hole and then slide it.

2) Fix the electric parts box cover by tightening with screws A and B.

Fixing screws A

Projection on the side plate

Slit

Side plate

Key hole

Electric parts box cover

Hinge part

Screw B

Screw-A

– 92 –

No. Part name Procedure Remarks

Electric parts

box

1. Detachment

1) Perform works of 1 of c. (In case of under air intake) Perform works of 1 of (In case of back air intake) Perform works of 1 of

2) Remove the indoor/outdoor connecting wire and remote controller wire from each terminal block.

3) Remove the connectors which connected from the control P.C. board to other parts.

NOTE

First unlock the housing and then remove the connectors.

CN34 : Float switch (3P, Red) CN41 : Remote controller terminal block (3P,

CN504 : Drain pump (2P, White) CN67 : Power supply terminal block (5P: Black)

CN101 : TC sensor (2P: Black) CN102 : TCJ sensor (2P, Red) CN104 : Room temperature (2P, Yellow)

4) Remove screws. (Ø4 x 10, 2 pcs.)

5) Slide the electric parts box toward the arrow mark and then remove the box from the bottom side of the main unit.

Blue) (Screw part of terminal block, 2P.)

(Screw part of terminal block, 3P.)

Electric parts box

Screw Notch part

Control P.C. board

2. Attachment

1) Attach the electric parts box and then perform wiring as original.

Notes 1

Check there is no missing or contact failure on the connectors.

Notes 2

Be sure to perform wiring as original.

2) Attach air filter, suction panel, and electric parts box as original.

1. Detachment

1) Perform work of 1 of f.

(In the works of 1 of control P.C. board is available even if you do not perform works after 4)).

2) Unlock the card edge spacers (5 positions) in the electric parts box to remove the control P.C. board.

f, removal of the

2. Attachment

1) Mount control P.C. board in the electric parts box as original.

2) Attach the electric parts box as original.

3) Be sure to perform wiring as original in the electric parts box.

NOTE

Check there is no missing or contact failure on the connectors.

CAUTION When replacing PC. board, check no-mex paper is attached.

4) Attach each air filter, suction panel or electric parts box cover as original.

– 93 –

No. Part name Procedure Remarks

PMV motor

1) Open cover of the electric parts box and then remove relay connector of the PMV motor.

Relay connector of PMV motor

PMV motor

2) As shown in the right figure, using a double spanner, open the check port at the side face and then remove the PMV motor.

Side check port

– 94 –

No. Part name Procedure Remarks

Fan motor, Fan, Fan case

1. Detachment

1) Perform works until opening of the electric

parts box cover in works of 1 of f.

2) Remove connectors for fan motor wiring from control P.C. board.

CN333 : Motor power supply (5P: White) CN334 : Motor control (5P: White)

3) Open the fan case (under) and remove it while pressing claws of the fan case (under). (There are both sides of the case)

4) Remove the fixing screws (Ø5 x 10, 2 pcs.) of the fixing plate (2 pcs.) at the side of the fan motor. (The fan motor becomes temporal hanging status by fixing plate.)

5) While supporting the fan motor by hands, remove the fixing plate from the motor base to remove the fan motor.

6) Loosen the hexagonal screw hole of the fan and then pull out the fan from the shaft. (Hexagon wrench : 3mm)

2. Attachment

1) Insert the fan in the shaft while adjusting to match the hexagonal screw hole to the groove of the shaft.

2) Perform screwing the fan motor with the fixing plate (Ø5 x 10, 2 pcs.)

Fan motor wiring CN333 CN334

Fixing screw

Fixing sheet metal

NOTE

Match the fan motor with turning direction of

the fan and fix so that the AP007 type and

AP024 type fan motor wirings are at refrigerant

piping side and AP036 type is at opposite side

offrefrigerant piping.

3) While positioning so that the fan is at the center of the fan case (upper), fix the fan with hexagonal screw.

NOTE

Be sure to use a torque wrench for fixing and tighten with 4.9N•m or more.

4) Attach the fan case (under) as original and check the fan turns smoothly without coming to contact with the fan case.

5) Connect the fan motor wirings as before, close and fix the electric parts box cover. Be sure to perform wirings as original in the electric parts box.

6) Attach air filter and suction panel as original position.

AP036 Type

AP024 Type

AP007 Type

Screw with hexagonal hole

Refrigerant piping side

– 95 –

CAUTION

When replacing the fan motor, be sure to exchange the clamp filter with the fan motor lead wire.

Drain socket

Fixing screws

Float switch

Drain pump

No. Part name Procedure Remarks

Drain pan

1. Detachment

1) Remove the drain cap and then extract the drain water accumulated in the drain pan.

NOTE

When removing the drain cap, be sure to receive drain water using a bucket, etc.

2) Loosen screws which fix the bottom base. (3 positions) (For AP036 models, remove 2 screws at the center.)

3) As shown in the right figure, when sliding it toward arrow direction, the electric parts cover the bottom base opens using the hinge part as a shaft.

4) Hold handle of the drain pan and then pull off slowly.

CAUTION

When removing the drain pan, do not hold the drain socket. (Water leakage may be caused.)

2. Attachment

1) First hook the thin side of the drain pan to the discharge panel and then push in the thick side.

2) Close the bottom base and fix it with screws.

Bottom base

Do not hold the drain socket.

Screws

Drain socket

Drain pan

Discharge port panel

Handle

Drain pump

Float switch

1. Detachment

1) Perform works until opening of the electric parts box cover in works of 1 of

2) Remove the connectors which connect to float switch of the drain pump from the control P.C. board.

CN34 : Float switch (3P, Red) CN504 : Drain pump (2P, White)

3) Remove the fixing screws (2 positions) of the check cover and then take out the check cover. (To the check cover, the drain pump and float switch are attached.)

4) Pick up the hose band, shift from the pump connecting part, remove the drain hose and then remove the check cover.

5) Remove screws which fix the drain pump assembly and then remove the drain pump assembly. (Ø4 x 10, 3 pcs.)

6) Remove the resin nut switch and then remove the float switch from the fixing plate.

2. Attachment

1) Using the removed screws, fix the drain pump assembly as original.

2) Using the removed resin nut, fix the float switch as original.

3) Connect the drain hose as original and then attach the hose band.

4) Connect the drain pump and the float switch wiring as original and close the electric parts box cover for fixing. Be sure to perform wiring in the electric parts box as original.

5) Enter the corners (2 positions) of the check cover in the entering part and then fix it using fixing screws (2 positions).

Connector position CN34 CN504

Entering part

Fixing screws

Check cover

Hose band

Screws

Resin nut

Float switch

Drain pump

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No. Part name Procedure Remarks

Heat exchanger

1. Detachment

1) Recover the refrigerant gas and then remove the refrigerant pipe of the indoor unit.

2) Perform works of 1 of

3) Pull out TC sensor and TCJ sensor wirings from the holder.

4) Remove the screws (Ø4 x 8, 2 pcs.) and then remove the piping cover.

5) Remove screws (Ø4 x 8, 1pc.) of the heat exchanger fixed plate.

6) While holding the heat exchanger, remove the fixed screws (Ø4 x 8, 2 pcs.) of the end plate and then take out the heat exchanger slowly.

2. Attachment

1) Set the heat exchanger at the original position and fix it as before, using screws which removed the end plate, heat exchanger fixed plate and piping cover.

2) Enter TC sensor and TCJ sensor wirings in the holder and then perform wirings as original.

3) Attach the drain pan and the bottom base as original.

AP007 Type

End plate

AP024 Type

End plate

: Screw position

Heat exchanger fixed plate

Piping cover

Heat exchanger fixed plate

Piping cover

AP036 Type

End plate

Heat exchanger fixed plate

Piping cover

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12. EX

12-1. Concealed duct standard type

MMD-AP0076BHP1-E(TR), MMD-AP0096BHP1-E(TR), MMD-AP0126BHP1-E(TR) MMD-AP0156BHP1-E(TR), MMD-AP0186BHP1-E(TR)

PLODED VIEWS AND PARTS LIST

– 98 –

Location

No.

201 43T21448 MOTOR, FAN 1 1 1 1 1 202 43T20340 FAN, MULTI BLADE 1 1 1 1 1 203 43T70315 HOSE, DRAIN 1 1 1 1 1 204 43T44522 REFRIGERATION CYCLE ASSY 1 1 1 204 43T44523 REFRIGERATION CYCLE ASSY 1 1 205 43T22335 CASE, FAN, LOWER 1 1 1 1 1 206 43T22337 CASE, FAN, UPPER 1 1 1 1 1 207 43T72317 PAN ASSY, DRAIN 1 1 1 1 1 208 43T82319 SOCKET 1 1 1 1 1 209 43T79321 CAP, DRAIN 1 1 1 1 1 210 43T70319 HOSE,DRAIN 1 1 1 1 1 211 43T39356 FLANGE 1 1 1 1 1 212 43T47331 BONNET, 6.35 DIA 1 1 1 1 1 213 43T83311 BAND, HOSE 1 1 1 1 1 214 43T82318 SOCKET 1 1 1 214 43T82320 SOCKET 1 1 215 43T97312 NUT, FLARE, 3/8 IN 1 1 1 215 43T97317 NUT, FLARE, 1/2 IN 1 1 216 43T97311 NUT, FLARE, 1/4 IN 1 1 1 1 1 217 43T47332 BONNET, 9.52 DIA 1 1 1 217 43T47333 BONNET, 12.70 DIA 1 1 218 43T77301 PUMP ASSY 1 1 1 1 1 219 43T51312 SWITCH, FLOAT 1 1 1 1 1 220 43T83307 BAND, HOSE 1 1 1 1 1 221 43T80340 AIR FILTER 1 1 1 1 1 226 43T19333 HOLDER, SENSOR 2 2 2 2 2 227 4 3 T8 2 329 229 43T82323 FILTER, STOPPER 1 1 1 1 1

232 43T39352 PLATE,WIND 2 2 2 2 2 233 43T46416 MOTOR, PMV 1 1 1 1 1 234 43T46417 SHEET, PMV 1 1 1 1 1 235 43T46413 VALVE, PMV 1 1 1 235 43T46431 VALVE, PMV 1 1 236 43T47386 STRAINER 1 1 1 1 1 237 43T19321 FIX-P-SENSOR 1 1 1 1 1

Parts No. Description

RAIL, FILTER ASSY

MMD-AP

0076 0096 0126 0156 0186

1 1 1 1 1

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BHP1-E (TR)

– 99 –

MMD-AP0246BHP1-E(TR), MMD-AP0276BHP1-E(TR), MMD-AP0306BHP1-E(TR)

– 100 –

Toshiba MMD-AP0186BHP1-E, MMD-AP0126BHP1-E, MMD-AP0246BHP1-E, MMD-AP0276BHP1-E, MMD-AP0306BHP1-E Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual