Toshiba MMF-AP0156H-E, MMF-AP0186H-E, MMF-AP0246H-E, MMF-AP0276H-E, MMF-AP0366H-E Service Manual

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FILE NO. A10-1420

SERVICE MANUAL

AIR-CONDITIONER (MULTI TYPE)

INDOOR UNIT

MMF-AP0156H-E (TR) MMF-AP0186H-E (TR) MMF-AP0246H-E (TR) MMF-AP0276H-E (TR) MMF-AP0366H-E (TR) MMF-AP0486H-E (TR) MMF-AP0566H-E (TR)

R410A

PRINTED IN JAPAN, Jan., 2015 ToMo

CONTENTS

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

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

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) .................................................... 14

2-1. MMF-AP0156H-E (TR), AP0186H-E (TR) ........................................................................... 14

2-2. MMF-AP0246H-E(TR), AP0276H-E (TR) ............................................................................ 15

2-3. MMF-AP0366H-E (TR), AP0486H-E (TR), MMF-AP0566H-E (TR) .................................... 16

3. WIRING DIAGRAMS .............................................................................................. 17

4. PARTS RATING ...................................................................................................... 18

5. REFRIGERANT CYCLE DIAGRAM ....................................................................... 19

6. CONTROL OUTLINE.............................................................................................. 20

7. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT

CONFIGURATION) ................................................................................................. 26

7-1. Indoor controller block diagram....................................................................................... 26

7-1-1. In Case of Connection of Wired (Simple) Remote Controller .............................. 26

7-1-2. In Case of Connection of Wireless Remote Controller ........................................ 27

7-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote

Controller .................................................................................................................. 28

7-2. Indoor Print Circuit Board................................................................................................. 29

7-3. Optional connector specifications of indoor P.C. board ............................................... 30

7-4. Test operation of indoor unit ............................................................................................ 31

7-5. Method to set indoor unit function DN code................................................................... 32

7-6. Applied control of indoor unit .......................................................................................... 35

8. TROUBLESHOOTING ............................................................................................ 51

8-1. Overview ............................................................................................................................. 51

8-2. Troubleshooting method ................................................................................................... 52

8-3. Troubleshooting based on information displayed on remote controller ..................... 58

8-4. Check codes displayed on remote controller and SMMS outdoor unit (7-segment

display on I/F board) and locations to be checked ........................................................ 63

8-5. Diagnostic Procedure for Each Check Code (Indoor Unit) ............................................ 78

8-6. Sensor characteristics ......................................................................................................79

9. P.C. BOARD EXCHANGE PROCEDURES ............................................................ 81

9-1. Replacement of indoor P.C. boards ................................................................................. 81

10. DETACHMENTS................................................................................................... 86

11. EXPLODED VIEWS AND PARTS LIST ............................................................... 91

– 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 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

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 a 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.

fter work

* 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

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

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

Do not touch the aluminium fins of the unit. 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 electric 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 ff

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 electric cover 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.

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 four persons.

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 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.

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 Corporation

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

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

<Floor Standing Type> MMF-AP0156H-E MMF-AP0156H-TR MMF-AP0186H-E MMF-AP0186H-TR MMF-AP0246H-E MMF-AP0246H-TR MMF-AP0276H-E MMF-AP0276H-TR MMF-AP0366H-E MMF-AP0366H-TR MMF-AP0486H-E MMF-AP0486H-TR MMF-AP0566H-E MMF-AP0566H-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

NOTE

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

– 11 –

Specifications

Model

MMF-AP0156H-E MMF-AP0186H-E MMF-AP0246H-E MMF-AP0276H-E MMF-AP0366H-E MMF-AP0486H-E

MMF-AP0566H-E MMF-AP0156H-TR MMF-AP0186H-TR MMF-AP0246H-TR MMF-AP0276H-TR MMF-AP0366H-TR MMF-AP0486H-TR MMF-AP0566H-TR

: Under 70 dBA

∗

Weight centre and weight

Model name X(mm) Y(mm) Z(mm) Total weight (kg)

MMF-AP0156HMMF-AP0186HMMF-AP0246HMMF-AP0276HMMF-AP0366HMMF-AP0486HMMF-AP0566H-

∗ ∗ ∗ ∗ ∗ ∗ ∗

Sound presser level (dBA)

Cooling Heating

∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗

90 290 830

180 295 860 62

∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗

Weight (kg)

46 46 47 47 62 62 62 46 46 47 47 62 62 62

(Unit: mm)

Y X

– 12 –

1. SPECIFICATIONS

Floor Standing Type

Model name MMF-AP

Cooling Capacity 䋨*1䋩 kW 4.5 5.6 7.1 8.0 11.2 14.0 16.0 Heating Capacity 䋨*1䋩 kW 5.0 6.3 8.0 9.0 12.5 16.0 18.0 Electrical Power supply 1phase 50Hz 230V(220V-240V) /1phase 60Hz 220V

charastaristics

Running current Power consumption

Starting current 0.84 / 0.88 Appearance Silkey Shade (Munsell/ 1Y 8.5/8.0) Outer Height mm 1750 dimension Width mm 600

Depth mm 210 390 Weight kg 47 62 Heat exchanger Finned tube Fan Centrifugal fan Air filter Standard filter (Simple filter)

Air Flow (H/M/L) m

Controller Remote Controller Connecting Gas side mm

pipe

Drain port diameter mm 20 (One side of male screw) Sound Pressure Level (H/M/L) dB 46 / 42 / 37 49 / 45 / 39 Sound Power Level (H/M/L) dB

Liquid side mm

kW 0.055 0.089 0.135 0.160

0156H

-E(TR)

A 0.38 / 0.40 0.60 / 0.63

A 0.53 / 0.56

(780 / 660)

64 / 60 / 55 67 / 63 / 57 72 / 67 / 62

0186H

-E(TR)

(Separate power supply for indoor units is required.)

900

Ø12.7 Ø12.7

0246H

-E(TR)

Ø6.4 Ø9.5

0276H

-E(TR)

1200

(990 / 840)

0366H

-E(TR)

0.90 / 0.94

1.26 / 1.32

1920

(1620 /1380)

51 / 46 / 41

69 / 64 / 59

0486H

-E(TR)

50Hz/60Hz

0566H

-E(TR)

1.10 / 1.15

1.54 / 1.61

2160

(1730 /1560)

54 / 49 / 44

䋨*1䋩Cooling / heating capacity is based on single connection operation with standard piping length under Japanese Industrial Standard B 8615 Condition 1.

– 13 –

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

2-1. MMF-AP0156H-E (TR), AP0186H-E (TR)

Wall

Front

Floor

More than 200

Wall

More than 500

(In case of right side piping)

Front

1000 More than

Details of hole for lower side piping

Wall

4288

105

120

50x120(square)

(For under surface piping)

192

640

For M8 Screw bolt

or M8 Anchor bolt

4-lower hole

( )

Space required for installation and servicing

1730

1770

2-lower hole

For M8 Screw bolt

or M8 Anchor bolt

( )

In case of In case of

120

130 knockout

(For backside piping)

Wall

and install tightly.

There are many holes of two kinds on installation plate,

one is to fix for wall and the other is to fix for the unit.

Please choose the best holes and the installation position,

( )

Refrigerant piping position

120

135

155

(Gas side)

Refrigerant piping joint 12.7

164

(Liquid side)

Refrigerant piping joint 6.4

181

358

341

Wall

300

Details of hole for back side piping

You can also install

the installation plate by

reversing of the plate.

Wall

In case of installing distance

9288

is 50mm from wall

( )

105

to fix should separate.

Unit can be

installed 50mm

apart from wall.

210

(50x120 knockout hole)

Lower refrigenrant piping port

192

10 640

600

30x3

Wall

4025210815631

The head size of the bolt

cover

Control

1750

Refrigerant piping port(Both side)

( 80 knockout hole)

157

132

165

120

107

Drain hose

120

200

( 130 knockout hole)

Refrigerant piping hole(Back side)

180

Refrigerant piping hole(Bottom side)

(50x120 knockout hole)

Suction port

Installation plate

Discharge port

Installation plate

(Both side)

– 14 –

2-2. MMF-AP0246H-E(TR), AP0276H-E (TR)

(In case of right side piping)

More than 500

Front

Wall

Front

Floor

More than 200

Wall

1000

More than

Details of hole for lower side piping

4288

Wall

50x120(square)

(For under surface piping)

120

192

105

640

or M8 Anchor bolt

For M8 Screw bolt

4-lower hole

( )

Space required for installation and servicing

1730

1770

2-lower hole

For M8 Screw bolt

or M8 Anchor bolt

( )

120

In case of In case of

120

130 knockout

(For backside piping)

135

155

(Gas side)

Refrigerant piping joint 15.9

(Liquid side)

358

and install tightly.

one is to fix for wall and the other is to fix for the unit.

Please choose the best holes and the installation position,

There are many holes of two kinds on installation plate,

( )

Wall

Refrigerant piping position

Refrigerant piping joint 9.5

181

164

341

Details of hole for back side piping

the installation plate by

You can also install

reversing of the plate.

Wall

300

In case of installing distance

9288

is 50mm from wall

( )

installed 50mm

Unit can be

apart from wall.

210

(50x120 knockout hole)

Lower refrigenrant piping port

105

192

10 640 10

30x3

600

30x3

Discharge port

Installation plate

Wall

Control

4025210815631

to fix should separate.

The head size of the bolt

cover

1750

Refrigerant piping port(Both side)

( 80 knockout hole)

157

132

165

120

107

200

( 130 knockout hole)

Refrigerant piping hole(Back side)

Drain hose

120

180

Refrigerant piping hole(Bottom side)

(50x120 knockout hole)

Suction port

Installation plate

(Both side)

– 15 –

2-3. MMF-AP0366H-E (TR), AP0486H-E (TR), MMF-AP0566H-E (TR)

Wall

Front

Floor

More than 200

Wall

52258

50x120(square)

(For under surface piping)

Space required for installation and servicing

Details of hole for back side piping

500

More than

Front

1000

More than

120

Wall

195

192

640

or M8 Anchor bolt

For M8 Screw bolt

4-lower hole

( )

Details of hole for lower side piping

(In case of right side piping)

1730

1770

120

2-lower hole

For M8 Screw bolt

or M8 Anchor bolt

( )

You can also install

Unit can be

120

the installation plate by

installed 50mm

In case of In case of

130 knockout

(For backside piping)

and install tightly.

There are many holes of two kinds on installation plate,

one is to fix for wall and the other is to fix for the unit.

Please choose the best holes and the installation position,

reversing of the plate.

apart from wall.

390

( )

Wall

The head size of the bolt

Wall

Refrigerant piping position

to fix should separate.

Gas side

200

(Gas side)

Liquid

( 80 knockout hole)

Refrigerant piping port(Both side)

308

side

165

290

Refrigerant piping joint 15.9

(Liquid side)

Refrigerant piping joint 9.5

215

160

Drain hose outlet port(both side)

( 40 knockout hole)

120

125

380

is 50mm from wall

In case of installing distance

( )

102

258

(50x120 knockout hole)

Lower refrigenrant piping port

195

Wall

192

10 640 10

300

cover

Control

30x3

600

30x3

40252108156315910

Discharge port

Installation plate

1750

165

120

Drain hose

120

Installation plate

180

Refrigerant piping hole(Back side)

( 130 knockout hole)

Refrigerant piping hole(Bottom side)

(50x120 knockout hole)

Suction port

(Both side)

– 16 –

3. WIRING DIAGRAMS

TCJ

TC2

t˚

2t˚2

t˚

TC1

t˚

PMV

452

Connector

Parts Name

Fuse

Reactor

Fan Motor

Louver Motor

Pulse Motor Valve

Temp sensor

Terminal Block

Indoor temp sensor

(DISP)CN72

DC 7V

CN81

(BLK)

(RED)

CN521

(BLU)

CN20

CN32

(WHI)

(YEL)

CN61

421 3 55

421 3

125 6

2 31

Symbol

UART

GRL

FAN DRIVE

T10

CN**

F01

PMV

TB01,02

TC1,2,TCJ

(YEL)

CN104

CN102

(RED)

CN34

(WHI)

CN504

17 1615 1819

14 13

(WHI)

CN510

9 8 11

7 6 5 43

2 1

675321 4

(BLK)

(RED)

CN101

(BRW)

CN100

(MCC-1643)

for Indoor Unit

Control P.C. Board

CN82

(CHK)CN71

DC20V

DC15V

supply

Powe r

(BLU)

DC12V

circuit

indicates the connection terminal.

indicates the terminal block.

indicates the connector on the control P.C. board.

indicates the control P.C. board

(WHI)

CN210

indicates the protection ground.3.

BLK

WHI

Long dashed short dashed line indicates the accessories.

1. Broken line indicates the wiring at site.

Adapter for

Controller

Wireless Remote

F01

T6.3A

250V

RED

WHI

CN01

(BLU)

1 3

CN40

CN41

(BLU)

(BLK)

CN22

BLK

CN309

CN67

(YEL)

unit

Flow selector

Flow selector unit

BLK

BLU

Earth screw

,60Hz

,50Hz

220V

R(L) S(N)

Power supply

220-240V

U2 U1

TB02

B AU2U1

Controller

Wired Remote

Outdoor unit

TB01

COLOR

INDICATION

YEL:YELLOW

BLK:BLACK

Indoor unit

RED:RED

Earth screw

WHI:WHITE

BRW:BROWN

BLU:BLUE

– 17 –

4. PARTS RATING

Indoor unit

Model MMF-AP

Fan motor Pulse motor Pulse motor valve Driving motor for vertical louver TA sensor TC1 sensor TC2 sensor TCJ sensor

0156H∗0186H∗0246H∗0276H∗0366H∗0486H∗0566H

ICF-340D62-1 ICF-340WD109-1

EFM-MD12TF-1

EDM-B40YGTF-2 EDM-B60YGTF-1

MP24Z4N

Lead wire length: 1200 mm Vinyl tube

Ø4 size lead wire length: 1200 mm Vinyl tube (Blue)

Ø6 size lead wire length: 2000 mm Vinyl tube (Black)

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

∗

– 18 –

5. 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): Brown)

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

Heat exchanger

at indoor side

Fan

Sensor

(TA)

Functional outline

Sensor

(TC1)

Fan motor

– 19 –

6. 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

– 20 –

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

”

– 21 –

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

– 22 –

* 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

Elimination of

residual heat

Filter sign display (not applicable to wireless type)

*Provided in

the separately mounted type, TCB-AX32E2.

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

1. The indoor fan’s cumulative hours of operation are counted, and when these exceed the prescribed value (150H), 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.

• 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.

“FILTER

” displayed

150HFilter service life

– 23 –

NO. Item Specification outline Remarks

Operation standby Heating standby

<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

• “OPERATION

STANDBY displayed No display provided on wireless remote controller

• “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.

• “HEATING STANDBY displayed

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).

”

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.

– 24 –

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.

SAVE

Power saving mode

1. Push the

2. The “ “ segment lights up on the wired remote controller display.

button on the remote controller

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

– 25 –

7. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION)

7-1. Indoor controller block diagram

7-1-1. In Case of Connection of Wired (Simple) Remote Controller

Wired(Simple) header remote controller (Up to 2 units)

Schedule timer

Indoor unit

#1 (Header)

Display LCD

Displ

ay LED

EEPROM

Remote controller

communication circuit

Indoor control P.C. board (MCC-1643)

Remote controller

DC20V

DC5V

DC12V

communication circuit

CPU

Driver

Function setup

Key switch

DC5V

Powe r circuit

MCU

CN2

CN1

EEPROM

TA sensor

TC1 sensor

TC2 sensor

Display

LCD

DC5V

Powe r circuit

LCD

driver

CPU

(Follower)

Function setup

Secondary

Same as left

Key switch

battery

(Follower)

Same as left

PMV

Outside output

Louver

motor

Indoor

fan motor

DC 280V

Powe r

circuit

Start/Alarm

Fan motor

control cicuit

Max. 8 units are connectable. *1 The schedule timer cannot be connected to the simple wired

remote controller.

Power supply

1Ø220-240V, 50Hz

1Ø220V, 60Hz

L N

TCJ sensor

BUS

communication

circuit

U1 U2

Indoor/Outdoor communication

U1 U2

Outdoor unit

Powe r

supply

U1 U2

Outdoor

unit

U1 U2

Powe r

supply

Outdoor

unit

– 26 –

7-1-2. In Case of Connection of Wireless Remote Controller

Indoor unit

#1 (Header)

Indoor control P.C. board (MCC-1643)

Wireless remote controller kit

Receiving P. C . board

#2 #3

(Follower)(Follower)

PMV

Louver

motor

Indoor

fan motor

DC 280V

Powe r

circuit

DC20V

DC5V

DC12V

Outside output

Start/Alarm

Fan motor

control circuit

Remote controller

communication circuit

Driver

MCU

EEPROM

TA sensor

TC1 sensor

TC2 sensor

TCJ sensor

BUS

communication

uit

circ

Remote controller

communication circuit

CPU

Emergent operation

Function

setup SW

Display

Powe r

circuit

DC5V

Buzzer

Receiving

circuit

LED

Same

as left

Power supply

Outdoor

U1U2

unit

Same as left

Power supply

U1U2

Outdoor

unit

L N

Power supply

1Ø220-240V, 50Hz

1Ø220V, 60Hz

Outdoor unit

U1 U2

Indoor/Outdoor communication

U1 U2

– 27 –

7-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller

Indoor unit

#1 (Header)

PMV

Wired(Simple) header remote controller

Display LCD

EEPROM

Display LED

Indoor control P.C. board (MCC-1643)

DC20V

DC5V

DC12V

Driver

Function setup

CPU

DC5V

Remote controller

communication circuit

Remote controller

communication circuit

MCU

Key switch

Powe r circuit

EEPROM

TA sensor

TC1 sensor

TC2 sensor

TCJ sensor

Schedule timer

Display

LCD

CN2

CN1

Remote controller

communication circuit

Powe r circuit

DC5V

Buzzer

Receiving

circuit

Powe r circuit

Wireless remote controller kit

CPU

DC5V

Secondary

Receiving P. C . board

Emergent

operation

Function

setup SW

Display

LED

LCD

driver

CPU

battery

#2 #3

Function setup

Key switch

Same as left

(Follower)(Follower)

Same as left

Outside output

Louver

motor

Indoor

fan motor

DC 280V

Powe r circuit

Max. 8 units are connectable. *1 The schedule timer cannot be connected to the simple wired

remote controller.

Start/Alarm

Fan motor

control cicuit

communication

L N

Powe r supply

1Ø220-240V, 50Hz

1Ø220V, 60Hz

circuit

U1 U2

Outdoor unit

BUS

Indoor/Outdoor communication

U1U2 U1U2

Powe r supply

Outdoor

unit

Powe r

supply

Outdoor

unit

– 28 –

7-2. Indoor Print Circuit Board

(MCC-1643)

Power supply

CN67 (Black),

AC220-240V

Optiona power supply

CN309 (Yellow),

AC220-240V

DC fan motor

CN210

(White)

CHK

CN71 (White),

DC5V

Power supply LED

of remote controller

D403 (Red)

DISP

CN72 (White),

DC5V

Output for FS unit

CN81 (Black),

DC12V

Application control kit

CN521 (Red),

PMV output

DC12V, 5V

CN82 (Blue),

DC12V

HA(T10)

Louver

CN510

(White)

Remote controller

communication LED

D504 (Green)

CN61 (Yellow),

DC12V

Remote controller

CN41 (Blue),

DC20V

Indoor/Outdoor

communication

CN40 (Blue)

TC1 sensor

CN100 (Brown),

DC5V

TCJ sensor

CN102 (Red),

DC5V

TC2 sensor

CN101 (Black),

– 29 –

DC5V

TA sensor

CN104 (Yellow),

DC5V

D501 (Rde)

microprocessor

Power supply LED of

Indoor/Outdoor central

control communication LED

D503 (Yellow)

7-3. Optional connector specifications of indoor P.C. board

)noitce

les tupni citatS/ )yrotcaf morf tnempihs tA( esluP=ON/SEY :10J( tupni FFO/NO

skrameRSpecifications.oN niP

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

controller (DN [31] = 0000 → 0001)

A Htupn

∗

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

FFO/NO1

2Output (Open collector)

20V

. oN

r otcennoCnoitcnuF

1 DC12V

bition of remote controller operation stop is performed by input.

3 Remote controller prohibited input Permission/Prohi

4 Operation output (Open collector) Operation ON (Answer back of HA)

16NCAH

6Warning output (Open collector) Warning output ON

5 DC12V

ilable by indoor unit and remote controller only.

This check is used to check indoor operation. (Performs operation of indoor fan ìH ”, Louver horizontal

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

Communication is ava

20V

CN72

CN71

Connected Application control kit (TCB-PCUC1E)

1 12V

25V

4 Receive

3 Transmission

50V

CHK

Ventilation outputCN32

Operation check

DISP

Exhibition mode

Option control kit CN521

– 30 –

7-4. 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

Communication

P. C . board LED

Normal time

DISP pin open

(H)

Max. opening degree (1500 pls)

Vertical

All ignored

Lights

DISP pin short circuit

(H)

Min. opening degree (30 pls)

Vertical

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.

– 31 –

7-5. 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 button to select the desired SET DATA

associated with the selected function.

5 Push the

steady.)

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

• To change the selected function, go back to step 3.

6 When the

off state.

SET

button. (The display changes from flashing to

SET

button is pushed, the system returns to normal

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

– 32 –

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: 0 °C

Existence of [AUTO]

mode

Cooling only 0000: Heat pump

Type10 0013: Floor Standing 0013: Floor Standing

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

Louver type

(Air direction adjustment)

Temp difference of [AUTO] mode selection

COOL → HEAT, HEAT → COOL

Automatic restart of

power failure

Selection of option/error

input (TCB-PCUC1E: CN3)

HA terminal (CN61)

select

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

32TA

33 Temperature unit select 0000: °C (at factory shipment) 0001: °F 0000: °C

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

Timer setting (wired remote controller)

Whether the power

saving mode can be set by the remote controller

Presence of Application control kit (TCB-PCUC1E)

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 °C

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

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

0002: Follower unit of group

0000: No louver 0001: Swing only 0001: Swing only

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

0000: Available (can be performed) 0001: Unavailable

0000: Invalid 0001: Valid 0001: V

0000: None 0001: Exist

0001: 150H 0003: 5000H

0064: No.64 unitto 0099: Unfixed

0001: +1 °C 0010: +10 °C (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

(cannot be performed)

0001: 150H

0000: Standard

0000: 0 °C

0001: Not provided

0000: Heat pump

type

(Ts ±1.5)

(HA terminal)

0000: Available

alid

0000: None

– 33 –

Type DN code “10”

Value

0013

Floor Standing MMF-AP

Indoor Unit Capacity DN code “11”

Value

0000*

0001

0003

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

∗∗∗H∗

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

– 34 –

7-6. Applied control of indoor unit

Control system using remote controller interface (TCB-IFCB-4E2) 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-IFCB-4E2)

Input IFCB-4E2: 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-IFCB-4E2

Start/Stop input

COM (GND)

Remote controller sisabling / ending input

In-operation signal output

COM (+12V)

Error signal output

1 2

4 5 6

CN61

T10

(Yellow)

1 2

CN06

1 2

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

– 35 –

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

+ CL + buttons for 4 seconds or more.

UNIT LOUVER

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

SET

button. (OK if display goes on.)

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

Unavailable (At shipment)

Available

3 ).

6 Pushing returns the status to the usual stop status.

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

121

Outside control input of fan

To terminal

– 36 –

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 or button, specify the CODE No. 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.

00010001

0001 to the SET DATA.

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 thermo. OFF operation starts. Application control kit (TCB-PCUC1E) is necessary. Please refer to the manual of Application control kit for a detailed setting.

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

– 37 –

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

Outdoor

unit

Indoor unit 1

Indoor unit 2 Indoor unit 3

Outdoor

unit

Indoor unit 1 Indoor unit 2

Remote

controller

1Line (system) address 1 1 2 2

1Indoor unit address 2 3 1 2

Group address

Header unit

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.

– 38 –

2 Push the TEMP. / buttons repeatedly to set the CODE No. to

1212

12 .

1212

3 Push the TIME / buttons repeatedly to set a system address.

(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.)

5 Push the TEMP. / buttons repeatedly to set the CODE No. to 6 Push the TIME / buttons repeatedly to set an indoor unit address. 7 Push the

(It is OK if the display turns on.)

8 Push the TEMP. / buttons repeatedly to set the CODE No. to

SET

button.

SET

button.

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 button.

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.)

– 39 –

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).

– 40 –

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

– 41 –

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 buttons at the same time for more than 4 seconds.

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 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

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

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

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.

button to return to step 2.

6 Push the button to finish the procedure.

– 42 –

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 / buttons repeatedly to change the value indicated in the SET DATA

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 button to finish the procedure.

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

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

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

– 43 –

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.

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.)

ACAC

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

ACAC

buttons repeatedly to select a system

– 44 –

TEMP.

ON / OFF

Finish

FILTER RESET

TIMER SET

SET

TEST

5, 7

FAN

TIME

SAVE

SWING/FIX

Press to finish setting

MODE

VENT

UNIT LOUVER

4 Push the TIME / buttons repeatedly to change the value of the indoor unit address in

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.)

SET

button.

8 Push the button to finish the procedure.

– 45 –

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 “

→→

→ “

→→

00040004

0004”

00040004

00030003

→→

→ “

0003”

→→

00030003

00000000

0000” appears.

00000000

00020002

→→

→ “

0002”

→→

00020002

00050005

0005” again.

00050005

→→

→ “

→→

00010001

0001”

00010001

→→

→ “

→→

00000000

0000”.

00000000

4 Push the to return the display to normal.

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

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.)

– 46 –

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

for 4 seconds or longer to enter the service monitoring mode. 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

00 appears at first.

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.

– 47 –

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)

– 48 –

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

FA 0A 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.

– 49 –

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)

• D501 goes on at the same time when the power supply is turned on. (Goes on with operation of the main microprocessor)

• D501 flashes with 1-second interval (every 0.5 second) : When there is no EEPROM or write-in error

• D501 flashes with 10-seconds interval (every 5 second) : In DISP mode

• D501 flashes with 2-seconds interval (every 1 second) : During setting of function exchange (EEPROM)

2. D403 (Red)

• D403 goes on when power is supplied to the remote controller. (ON in hardware)

3. D503 (Yellow): Indoor/Outdoor central control

• D503 goes on for 5 seconds at the first half during communication with the central controller.

• D503 flashes for 5 seconds with 0.2-second interval at the latter half during communication with outdoor unit. (Goes on for 0.1 second, goes off for 0.1 second)

4. D504 (Green): Remote controller communication

• D504 goes on for 5 seconds at the first half during communication with remote controller. (Header unit of group)

• In the group indoor unit, D504 flashes for 5 seconds with 0.2-second interval at the latter half during communication between header and follower unit. (Goes on for 0.1 second, goes off for 0.1 second)

5. D14 (Orange)

• It flashes while receiving the serial signal from the outdoor unit. (Hardware)

6. D15 (Green)

• It flashes while sending the serial signal to the outdoor unit. (Hardware)

– 50 –

8. TROUBLESHOOTING

8-1. 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.

– 51 –

Description

tdoor unit, LCD display part (Remote controller) or

: Goes on, : Flashes, : Goes off

A (Alternate) : Flashing condition is alternate when there are two flashing LED.

S (Simultaneously) : Two LED flash simultaneously when there are two flashing LED.

) (∗

Main defective position

Flash

)

∗

Ready

Timer

Block display (

Receiver lamp display

Operation

(No central control system communication also)

No communication from remote controller and network adapter

No communication from outdoor unit

An address same to self address was detected.

Communication error between Application control kit and indoor unit P.C.

board

Regular communication between header and follower units in indoor unit

was impossible.

Open/short of heat exchanger temp. sensor (TCJ) was detected.

and outdoor

and remote controller

Regular communication error between indoor

Duplicated indoor address

Regular communication error between header

and follower in indoor unit

control kit and indoor unit

Communication error between Application

Indoor heat exchanger temp. sensor (TCJ) error

Open/short of heat exchanger temp. sensor (TC1) was detected.

Open/short of room temp. sensor (TA) was detected.

Indoor EEPROM error (Other error may be detected.)

There were multiple header units in a group.

Open/short of heat exchanger temp. sensor (TC2) was detected.

Indoor heat exchanger temp. sensor (TC2) error

Indoor or other P.C. board error

Indoor heat exchanger temp. sensor (TC1) error

Room tem. Sensor (TA) error

Indoor group address is unset. (Detected also at outdoor unit side)

There is even an indoor unit connected to group in individual indoor unit.

Duplicated setting of header in indoor group

There is group cable in individual indoor unit.

Indoor group address is unset.

Capacity of indoor unit is unset.

Setting of central control system address is duplicated.

System abnormally stopped by input of external error (CN80).

Error of indoor AC can was detected. (Fan motor thermal relay operation)

Float switch operated.

Duplicated central control system address

External error was input in indoor (Interlock).

Indoor AC fan error

Indoor overflow was detected.

Indoor capacity is unset.

header unit.

Error (Over-current, lock, etc.) of indoor DC fan was detected.

Group follower unit cannot be operated by [E03/L03/L07/L08] alarm of

Indoor DC fan error

Other indoor unit error

8-2. Troubleshooting method

When a trouble occurred, the method to judge the trouble or defective position of the air conditioner by this self-diagnosis function is shown below.

On the remote controller (Wired remote controller, Central control remote controller) and on the interface P.C. board of the ou

7-segment display part (on outdoor interface P.C. board) is provided in order to display the operation status.

The following table shows the list of each check code that each device detects. Check the check contents in the following table according to position to be checked.

Auxiliary code

Outdoor 7-segment

Check code display

TCC-LINK central

& remote controller

——

E08 Duplicated indoor unit No.

E04

E08

E03

——

E18

E11

——

F01

F02

——

L03

F29

L07

F03

F10

——

L09

L20

L30 Detected indoor unit No.

L30

L08 —

L08

——

P01

——

P10 Detected indoor unit No.

P10

P12

P31

k code display list (Indoor unit)

Check from outdoor unit: Refer to “Display of outdoor segment” in the following table.

Check from the indoor remote controller or TCC-LINK central controller: Refer to “Display on remote controller & TCC-LINK central controller” in the following table.

Check from indoor unit of wireless remote controller: Refer to Receiver lamp display” in the following table.

Chec

[Indoor unit detects error.]

– 52 –

Note) The check code display may be different according to the detected device even same error contents such as communication error.

: Flashes, : Goes off

: Goes on,

A (Alternate) : Flashing condition is alternate when there are two flashing LED.

S (Simultaneously) : Two LED flash simultaneously when there are two flashing LED.

(∗)

Description

] details is displayed together with unit No.)

∗∗∗

When signal of central control system cannot be sent, there are same

multiple central devices (AI-NET)

There were multiple network adapters (AI-NET) on remote controller

communication line.

Error of equipment connected to control interface of the general-

purpose unit exclusive to TCC-LINK/AI-NET

Group follower unit error

controller was not set (including 2 remote controllers)

When signal cannot be received from indoor unit, when header of remote

When signal cannot be sent to indoor unit

(Indoor header stops with alarm and follower unit continues operation.)

In 2-remote controller control, both remote controllers were set to header.

When signal of central control system cannot be received

(For remote controller, [

Main defective position

No remote controller header unit, remote controller

communication (receive) error

Remote controller communication (send) error

Duplicated remote controller header

Flash

∗)

Ready

Timer

Block display (

Receiver lamp display

Operation

Auxiliary code

Outdoor 7-segment

——

Check code display

Main defective position

Central control system communication (send) error

Central control system communication (receive) error

There are multiple network adapters.

Batched alarm of interface for general-purpose

equipment control

Group follower unit error

Flash

Ready

Timer

(In shared use

Block display (∗)

Receiver lamp display

Outdoor 7-segment

Check code display

Is not displayed

of remote controller)

Operation

Auxiliary code

——

—

(Abovementioned)

According to unit with alarm

——

E01

Remote controller

[Remote controller detects error.]

[Central controller detects error.]

C05

TCC-LINK central

E09

E02

C06

—

C12

P30

Note) The check code display may be different according to the detected device even same error contents such as communication error.

– 53 –

List of check codes (outdoor unit)

(Errors detected by SMMS-i 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

E31 E31 IPDU communication error

05 06

F04 – F04 ALT

F05 –

01: TE1

F06

02: TE2

F07 – F07 ALT

F08 – F08 ALT

F11 – F11

O O O O

0A 0B 0C 0D

0E 0F

Circle (O): Faulty IPDU

O O

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.

– 54 –

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.

– 55 –

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

0F 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

– 56 –

(Errors detected by IPDU featuring in SMMS-i 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 brea

Current detection circuit error

Activation of high-pressure

ALT

Heat sink overheating

ALT

error

kdown

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 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

indicated by "∗",

P20

High-pressure protection

ALT

activation

ALT

Outdoor fan IPDU error

Activation of G-Tr (IGBT)

ALT

short-circuit protection

Compressor position

ALT

detection circuit error

High-pressure (Pd) sens the criteria.

Outdoor fan IPDU detects error.

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

Compressor motor position detection error is detected.

or detected a value over

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.

– 57 –

8-3. 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

Check code

Indoor unit No. in which fault has occurred

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

TEMP.

button to select another check code.

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

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

ON / OFF

FAN

MODE

SAVE

VENT

SWING/FIX

UNIT LOUVER

3 When the button is pushed, normal display is

restored.

Normal display is restored.

Steps to follow

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

– 58 –

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

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

6 To finish off the service check, push the button.

– 59 –

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 “8-2. Troubleshooting method”.

: Goes off, : Goes on, : Flash (0.5 second)

Lamp indication

Operation

Flash

Operation

Timer Ready

No indication at all

Timer Ready

Alternate flash

Flash

Alternate flash

Check code

—

E01

E02

E03

E08

E09

E11

E12

E18

E04

E06

E07

E15

E16

E19

E20

E23

E25

E26

E28

E31

P10

P12

P13

P03

P04

P05

P07

P15

P17

P19

P20

P22

P26

P29

P31

Cause of trouble occurrence

Power supply OFF or miswiring between receiving unit and indoor unit

Receiving error

Sending error

Communication interruption

Duplicated indoor unit No. (Address)

Duplicated header units of remote controller

Communication error between Application control kit and indoor unit P.C. board

Automatic address start error

Wire connection error between indoor units, indoor power supply OFF

Miswiring or wire connection error between indoor unit and outdoor unit (Communication interruption between indoor and outdoor units)

Communication (receiving) error between indoor and outdoor units, decrease of No. of connected indoor units

Communication (sending) error between indoor and outdoor units

No indoor unit during setting of automatic address

No. of connected indoor units, capacity over

Error of No. of center unit

Disagreement of refrigerant pipe communication during setting of automatic address

Communication (sending) error between outdoor units

Duplicated setting of follower unit address

Communication (receiving) error between outdoor units, decrease of No. of connected outdoor units

Follower unit error

IPDU communication error

Indoor overflow error

Indoor fan error

Outdoor unit liquid back detection error

Outdoor unit discharge temp. (TD1) error

Outdoor unit high pressure switch operation

Outdoor unit open phase error was detected, negative phase error was detected

Outdoor unit heat sink overheat error: Heat radiation error of electric part (IGBT) in outdoor unit

Gas leak was detected: Short of refrigerant charge amount

Outdoor unit discharge temp. (TD2) error

Outdoor unit 4-way valve inverse error

High pressure protection error

Outdoor unit DC fan error

Outdoor unit G-Tr short-circuit error

Compressor position detection circuit error

Other indoor unit stopped due to error in the group.

⎫

Receiving unit

⎬ ⎭

⎫ ⎪

Miswiring or wire connection error

⎬

between receiving unit and indoor unit

⎪ ⎭

⎫

Setup error

⎬ ⎭

– 60 –

Lamp indication

Operation

Alternate flash

Operation

Alternate flash

Operation

Timer Ready

Check code

F01

F02

F03

F10

F04

F05

F06

F07

F08

F12

F13

F15

F16

F23

F24

Cause of trouble occurrence

Heat exchanger sensor (TCJ) error

Heat exchanger sensor (TC2) error

Heat exchanger sensor (TC1) error

Room temp. sensor (TA) error

Discharge temp. sensor (TD1) error

Discharge temp. sensor (TD2) error

Heat exchanger sensor (TE1) error

Liquid temp. sensor (TL) error Outdoor unit temp. sensor error

Outside temp. sensor (TO) error

Suction temp. sensor (TS1) error

Heat sink sensor (TH) error

⎫ ⎪ ⎪ ⎬

Temp. sensor error in indoor unit

⎪ ⎪ ⎭

⎫ ⎪ ⎪ ⎪ ⎪ ⎪ ⎬ ⎪ ⎪ ⎪ ⎪ ⎪ ⎭

Misconnection of heat exchanger sensor (TE) with liquid temp. sensor (TL) → Miswiring of temp. sensor in outdoor unit or miss-mounting

Miswiring between high pressure sensor (Pd) and low pressure sensor (Ps) → Misconnection of pressure sensor in outdoor unit

Low pressure sensor (Ps) error

High pressure sensor (Pd) error

⎫ ⎬

Pressure sensor error in outdoor unit

⎭

Simultaneous flash

Operation

Timer Ready

Flash

Operation

Timer Ready

Simultaneous flash

Operation

Timer Ready

Simultaneous flash

Operation

Timer Ready

F29

H01

H02

H03

H04

H06

H07

H08

H14

H16

L03

L05

L06

L07

L08

L09

L04

L10

L17

L18

L20

L28

L29

L30

Indoor unit EEPROM error

Compressor break-down

Current detection circuit error

⎫ ⎪ ⎬ ⎪ ⎭

Compressor 1 case thermo operation

Low pressure (Ps) drop error

Oil face drop detection error

Protections stop of outdoor unit

Oil face detection circuit system temp. sensor (TK1, TK2, TK3, TK4) error

Compressor 2 chase thermo operation: Protective device of outdoor unit operated.

Oil face detection circuit system error: Outdoor unit TK1, TK2, TK3, TK4 circuit system error

Duplicated header units in indoor unit

Duplicated priority indoor unit (Displayed in the room with priority)

Duplicated priority indoor unit (Displayed in a room except one with priority)

Group cable was connected to individual indoor unit.

Indoor group address was unset.

Indoor capacity was unset.

Duplicated setting of outdoor line address

Outdoor capacity was unset.

Disagreement error of outdoor unit type

COOL/HEAT select unit system error

Duplicated address of central control system

No. of connected outdoor units over

Defective No. of IPDU

Indoor unit outside interlock error

rorre metsys rosserpmoc tinu roodtuOkcol rosserpmoC

Simultaneous flash

F31

Outdoor unit EEPROM error

– 61 –

Others (Except check code)

Lamp indication

Operation

Timer Ready

Simultaneous flash

Timer Ready

Alternate flash

Check code

—

Cause of trouble occurrence

During test run

COOL/HEAT disagreement (Automatic cooling/heating setup to automatic cooling/heating unavailable model, heating setup to cooling only model)

– 62 –

8-4. 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.

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

E01 — —

E02 — —

E03 — —

E04 — —

No. of indoor units from which signal is received normally

E06 E06

— E07 —

Duplicated

E08 E08

E09 — —

E10 — —

E12 E12

E15 E15 —

indoor address

01: Indoor-outdoor communication 02: Outdooroutdoor communication

Sub-code

Location

detection

Remote controller

Indoor unit Indoor-remote

Indoor unit Indoor-outdoor

I/F Dropping out of

I/F Indoor-outdoor

Indoor unit I/F

Remote controller

Indoor unit Indoor inter-MCU

I/F Automatic address

I/F Indoor unit not

Description System status

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

Remote controller transmission error

controller communication error (detected at indoor end)

communication circuit error (detected at indoor end)

indoor unit

communication circuit error (detected at outdoor end)

Duplicated indoor address

Duplicated master remote controller

communication error

starting error

found during automatic address setting

Error detection

condition(s)

Stop of corresponding unit

All stop Indoor unit initially

All stop Signal cannot be transmitted

All stop More than one indoor unit is

Stop of corresponding unit

All stop • Indoor automatic address

All stop Indoor unit cannot be detected

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

Signal cannot be transmitted from remote controller to indoor unit.

There is no communication from remote controller (including wireless) or network adaptor.

Indoor unit is not receiving signal from outdoor unit.

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

from outdoor to indoor units for 30 seconds continuously.

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.)

Communication cannot be 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.

after indoor automatic address setting is started.

Check items (locations)

• Check remote controller inter-unit tie cable (A / B).

• Check for broken wire or connector bad contact.

• Check indoor power supply.

• Check for defect in indoor P.C. board.

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

• Check remote controller P.C. board.

• Check internal transmission circuit of remote controller.

--- Replace remote controller as necessary.

• Check remote controller and network adaptor wiring.

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

• Check indoor address setting.

• Check indoor-outdoor tie cable.

• Check outdoor termination resistance setting (SW30, Bit 2).

• Check power supply to indoor unit. (Is power turned on?)

• Check connection of indoor-outdoor communication cable.

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

• Check connection of communication connectors on outdoor P.C. board.

• Check for defect in indoor P.C. board.

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

• Check outdoor termination resistance setting (SW30, Bit 2).

• Check connection of indoor-outdoor communication circuit.

• 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 address 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.

– 63 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

00: Overloading 01-: No. of units connected

E16 E16

E18 — —

00: No header unit

E19 E19

E20 E20

E23 E23 —

E25 E25 —

E26 E26

E28 E28

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.

Sub-code

Location

detection

I/F Too many indoor

Indoor unit

I/F Error in number

I/F Connection to

I/F Outdoor outdoor

I/F Duplicated

I/F Dropping out of

I/F Outdoor follower

Description System status

units connected

Error in communication between indoor header and follower units

of outdoor header units

other line found during automatic address setting

communication transmission error

follower outdoor address

outdoor unit

unit error

Error detection

condition(s)

All stop • Combined capacity of indoor

Stop of 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 outdoor

All stop Outdoor unit initially

All stop Outdoor header unit receives

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.

Periodic communication 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.

addresses set manually.

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

error code from outdoor follower unit.

Check items (locations)

• 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).

• 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).

Disconnect inter-line tie cable in accordance with automatic address setting method explained in “Address setting” 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 7-segmentdisplay 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.

– 64 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

E31 E31

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 or Communication error between IPDU and I/F circuit board or Outdoor I/F circuit board error

SMM-i (Series 4)

01 02 03 04 05 06 07 08

09 0A 0B 0C 0D 0E

Symbol signifies site of IPDU error.

F01 — —

F02 — —

F03 — —

F04 F04 —

F05 F05 —

01: TE1 sensor error

F06 F06

02: TE2 sensor error

F07 F07 —

Sub-code

A3-IPDUFan

IPDU

O O

Location

detection

I/F IPDU

Indoor unit Indoor TCJ sensor

Indoor unit Indoor TC2 sensor

Indoor unit Indoor TC1 sensor

Description System status

communication error

error

All stop Communication is disrupted

Stop of corresponding unit

I/F TD1 sensor error All stop Sensor resistance is infinity

I/F TD2 sensor error All stop Sensor resistance is infinity

I/F TE1/TE2 sensor

error

All stop Sensor resistance is infinity

I/F TL sensor error All stop Sensor resistance is infinity

Error detection

condition(s)

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

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

or zero (open / short circuit).

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.

• 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).

• Check connection of TL sensor connector.

• Check resistance characteristics of TL sensor.

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

– 65 –

Check code

Outdoor 7-segment display

Main

remote

controller

*1 Total shutdown in case of header unit

Check

code

F08 F08 —

F10 — —

F11 — —

F12 F12 —

F13 —

F15 F15 —

F16 F16 —

F22 F22 —

F23 F23 —

F24 F24 —

F29 — —

F31 F31 —

H01 H01

Continued operation in case of follower unit

Sub-code

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

Location

detection

I/F TO sensor error All stop Sensor resistance is infinity

Indoor unit Indoor TA sensor

Indoor unit Indoor TF sensor

I/F TS1 sensor error All stop Sensor resistance is infinity

IPDU TH sensor error All stop Sensor resistance is infinity

I/F Outdoor

I/F Outdoor pressure

I/F TD3 sensor error All stop Sensor resistance is infinity

I/F Ps sensor error All stop Output voltage of Ps sensor is

I/F Pd sensor error All stop Output voltage of Pd sensor is

Indoor unit Other indoor error Stop of

I/F Outdoor EEPROM

IPDU Compressor

Description System status

error

temperature sensor wiring error (TE1, TL)

sensor wiring error (Pd, Ps)

error

breakdown

Stop of corresponding unit

All stop During compressor operation

All stop Readings of high-pressure

corresponding unit

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

All stop Inverter current detection

Error detection

condition(s)

or zero (open / short circuit).

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

or zero (open / short circuit).

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)

zero.

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

Indoor P.C. board does not operate normally.

not operate normally.

circuit detects overcurrent and shuts system down.

Check items (locations)

• 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 outdoor 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 highpressure Pd sensor connector.

• Check connection of lowpressure 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.

• 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).

– 66 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

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

H02 H02

H03 H03

H05 H05 —

H06 H06 —

H07 H07 —

3 side

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

Sub-code

Location

detection

IPDU Compressor error

IPDU Current detection

I/F TD1 sensor

I/F Activation of low-

I/F Low oil level

Description System status

(lockup) MG-CTT error

circuit error

miswiring (incomplete insertion)

pressure protection

protection

Error detection

condition(s)

All stop Overcurrent is detected

All stop Current flow of at least

All stop Discharge temperature of

All stop Low-pressure Ps sensor

All stop Operating compressor detects

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.

continuous state of low oil level for about 2 hours.

Check items (locations)

• 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 A3-IPDU 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 sides).

• 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.

• 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.

MG-CTT: Magnet contactor

– 67 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

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

H08 H08

H14 H14 —

H15 H15 —

Sub-code

Location

detection

I/F Error in

I/F Compressor 2

I/F TD2 sensor

Description System status

temperature sensor for oil level detection

case thermo activation

miswiring (incomplete insertion)

Error detection

condition(s)

All stop Sensor resistance is infinity

All stop Compressor 2 case thermo

All stop Air discharge temperature of

or zero (open / short circuit).

was activated.

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

Check items (locations)

• 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 of TK2 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).

• 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 4-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).

– 68 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

H16 H16

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

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

(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/FSMMS

I/FSMMS-i

Description System status

circuit error

Oil detection circuit error

Oil level detection circuit error

Error detection

condition(s)

All stop The temperature change of

All stop No temperature change is

TK1 cannot be detected even after Compressor 1 starts operating.

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.

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)

• Check the TK1 sensor installation.

• Check the TK1 sensor resistant characteristics.

• Check the misconnection of TK1, TK2, TK3, or TK4.

• Check the SV3E valve error.

• Check the oil circuit capillary clogging and non-return valve error.

• Check the hibernating refrigerant in compressor.

• Check the TK2 sensor installation.

• Check the TK2 sensor resistant characteristics.

• Check the misconnection of TK1, TK2, TK3, or TK4.

• Check the SV3E valve error.

• Check the oil circuit capillary clogging and non-return valve error.

• Check the hibernating refrigerant in compressor.

• Check the TK3 sensor installation.

• Check the TK3 sensor resistant characteristics.

• Check the misconnection of TK1, TK2, TK3, or TK4.

• Check the SV3E valve error.

• Check the oil circuit capillary clogging and non-return valve error.

• Check the hibernating refrigerant in compressor.

• Check the TK4 sensor installation.

• Check the TK4 sensor resistant characteristics.

• Check the misconnection of TK1, TK2, TK3, or TK4.

• Check the SV3E valve error.

• Check the oil circuit capillary clogging and non-return valve error.

• Check the hibernating refrigerant in compressor.

• Check for disconnection of TK1 sensor.

• Check resistance characteristics of TK1 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 TK2 sensor.

• Check resistance characteristics of TK2 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 TK3 sensor.

• Check resistance characteristics of TK3 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.

– 69 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

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

H16 H16

H25 H25 —

L02 L02 —

L03 — —

L04 L04 —

L05 — —

No. of priority

L06 L06

L07 — —

L08 L08 —

L09 — —

L10 L10 —

L17 L17

indoor units

Target indoor address

Sub-code

Location

detection

I/F Oil level detection

I/F TD3 sensor

Indoor unit Outdoor unit

Indoor unit Duplicated indoor

I/F Duplicated

I/F Duplicated priority

Indoor unit Connection of

Indoor unit Indoor group /

Indoor unit Indoor capacity

I/F Outdoor capacity

I/F Outdoor unit

Description System status

circuit error

miswiring (incomplete insertion)

model mismatch error

header unit

outdoor line address

indoor unit (as displayed on priority indoor unit)

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

group control cable to standalone indoor unit

addresses not set

not set

model mismatch error

Error detection

condition(s)

All stop No temperature change is

All stop Air discharge temperature

Only the target unit stopped

Stop of corresponding unit

All stop There is duplication in line

All stop More than one indoor unit has

All stop More than one indoor unit

Stop of corresponding unit

All stop Jumper wire provided on P.C.

detected by TK4 despite compressor having been started.

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

(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.

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

been set up as priority indoor unit.

have been set up as priority indoor unit.

There is at least one standalone 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.

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.

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)

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

• Check the outdoor unit model.

– 70 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

L18 L18 —

L20 — —

L28 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: error Communication error between IPDU and I/F circuit board or Outdoor I/F

L29 L29

circuit board error

SMM-i (Series 4)

01 02 03 04 05 06 07 08

09 0A 0B 0C 0D 0E

Symbol signifies site of IPDU error.

Detected indoor address

L30 L30

——L31

P01 ——

Sub-code

All IPDU

A3-IPDUFan

IPDU

O O

Location

detection

I/F Cool / heat switch

AI-NET Indoor unit

I/F Too many outdoor

I/F Error in No. of

Indoor unit External interlock

I/F Extended IC error Continued

Indoor unit Indoor fan motor

Description System status

unit error

Duplicated central control address

units connected

IPDUs

of indoor unit

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

Stop of corresponding unit

operation

error

Stop of corresponding unit

Error detection

condition(s)

The heating operation was performed without the coolonly setting configured in a coolonly room where a cool / heat switch unit is not connected.

control address setting.

outdoor units.

are detected when power is turned on.

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

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

Check items (locations)

• 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, and I/F P.C. board for defect.

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.

– 71 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

P03 —P03

P04

P05

P07

P10

P04

P05

P07

P10

Sub-code

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

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 Discharge

IPDU Activation of high-

I/F Open phase

I/F Detection of open

IPDU I/F

Indoor unit Indoor overflow

Description System status

temperature TD1 error

pressure SW

detected, Phase sequence error

phase / phase sequence

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

Heat sink overheating error

error

Error detection

condition(s)

All stop Discharge temperature (TD1)

All stop High-pressure SW is activated. • Check connection of highpressure

All stop • Phase sequence error was

All stop • Open phase is detected

All stop Temperature sensor built into

All stop • Float switch operates.

exceeds 115 ˚C.

detected when the power is turned on.

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

when power is turned on.

• Inverter DC voltage is too high (overvoltage) or too low (undervoltage).

IGBT (TH) is overheated.

• Float switch circuit is opencircuited or disconnected at connector.

Check items (locations)

• 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).

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.

• Check the phase sequence of outdoor power wiring.

• Check the outdoor PC board (I/F) error.

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

• Check power supply voltage.

• Check outdoor fan system error.

• Check heat sink cooling duct for clogging.

• Check IGBT and heat sink for thermal performance for faulty installation. (e.g. mounting screws and thermal conductivity)

• Check for defect in A3-IPDU. (faulty IGBT built-in temperature sensor (TH))

• Check float switch connector.

• Check operation of drain pump.

• Check drain pump circuit.

• Check drain pipe for clogging.

• Check for defect in indoor P.C. board.

MG-CTT: Magnet contactor

– 72 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

P12 ——

P13 —P13

P15

P17 —P17

P18 —P18

P19

P15

P19

Location

Sub-code

01: TS condition

02: TD condition I/F Gas leak detection

Detected outdoor unit No.

detection

Indoor unit Indoor fan motor

I/F Outdoor liquid

I/F Gas leakdetection

I/F Discharge

I/F 4-way valve

Description System status

error

backflow detection error

(TS1 condition)

(TD condition)

temperature TD2 error

temperature TD3 error

reversing error

Error detection

condition(s)

Stop of corresponding unit

All stop <During cooling operation>

All stop Protective shutdown due to

All stop Discharge temperature (TD2)

All stop Discharge temperature (TD3)

All stop Abnormal refrigerating cycle

• Motor speed measurements continuously deviate from target value.

• Overcurrent protection is activated.

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 ˚C In heating operation: 40 ˚C

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

exceeds 115 ˚C.

data is collected during heating operation.

Check items (locations)

• Check connection of fan connector and wiring.

• Check for defect in fan motor.

• Check for defect in indoor P.C. board.

• Check impact of outside air treatment (OA).

• Check static pressure setting.

• 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 side) to confirm full 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).

• Check for defect in main body of 4-way valve.

• Check for coil defect in 4-way 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.

– 73 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

P20 —P20

P22

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

I/F Activation of

IPDU Outdoor fan IPDU

Description System status

high-pressure protection

error

Error detection

condition(s)

All stop Pd sensor detects pressure

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)

equal to or greater than

3.6 MPa.

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 not 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 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.

• Check the fan motor.

• Check the connector connection for fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the connector connection for fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the connector connection for fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the connector connection for fan motor.

• Check the error of IPDU board for fan.

• Check the fan motor.

• Check the error of IPDU board for fan.

– 74 –

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

P22

P26

P29

P31 ——

P22

P26

P29

Sub-code

SMMS-i (Series 4)

0.: IGBT circuit

1.: 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 side 03: Compressor 3 side

Location

detection

IPDU Outdoor fan IPDU

IPDU G-TR shortcircuit

IPDU Compressor

Indoor unit Other indoor error

Description System status

error

protection error

position detection circuit error

(group follower unit error)

Error detection

condition(s)

All stop (Sub code: 0

All stop (Sub code: 1∗)

All stop (Sub code: 3∗)

All stop (Sub code:4∗)

All stop (Sub code: C∗)

All stop (Sub code: D∗)

All stop (Sub code: E∗)

All stop Overcurrent is momentarily

All stop Position detection is not going

Stop of corresponding unit

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

Fan IPDU position detection circuit Position detection is not going on normally.

Gusty wind, an obstruction, or another external factor Speed estimation is not going on normally.

Fan IPDU over current protection circuit Flow of current equal to or greater than the specified value is detected during operation of the fan.

Higher temperature than the specified value is detected during operation of the fan.

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

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

detected during startup of compressor.

on normally.

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

)

∗

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 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 (A3-IPDU).

• Check wiring and connector connection.

• Check for compressor layer shortcircuit.

• Check for defect in A3-IPDU P.C. board.

• Check indoor P.C. board.

– 75 –

Errors detected by TCC-LINK central control device

Check code

Outdoor 7-segment display

Main

remote

controller

Check

code

C05 ——

C06 ——

C12 ——

Differs according to nature of alarm-causing error

P30

(L20 displayed.) Duplicated central

Sub-code

Location

detection

TCC-LINK TCC-LINK central

Generalpurpose device I/F

TCC-LINK Group control

Description System status

control device transmission error

TCC-LINK central control device reception error

Blanket alarm for generalpurpose device control interface

follower unit error

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 addresses.

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.

– 76 –

[P12 error]

Power off.

Is not

connection error or

disconnection on the connector

CN210 of indoor unit

P.C. board?

Disconnect the connector CN210 to

the indoor P.C. board

YES

Repair the connector

connection.

Does the

fan turn smoothly when

turned by hand?

YES

Is each

resistance value

on the motor side of the

fan motor connector CN210

of the indoor P.C.

board correct?

YES

Replace the indoor

fan motor.

Model name for the indoor fan motor.

Replace the indoor

fan motor.

ICF-340D62-1, ICF-340WD109-1 <Checking procedure>

Measure the resistance of the following terminals with the tester. Internal motor circuit is damaged if the measured value is out of the range in below table.

6 5 4 321

Pin No.

Color Blue Yellow White Black — — Red

Measure by connecting the com side to ∗4 (Black) while measuring. The measurement may vary.

Measurement place Resistance value

a, b, c

Between 4 (Black) - 1 (Red)

II.

Between 4 (Black) - 5 (White)

III.

Between 4 (Black) - 6 (Yellow)

IV.

Between 4 (Black) - 7 (Blue)

∞

(MΩ)

35k – 65kΩ

130k – 170kΩ

)

(MΩ

∞

[Action if the measurement is out of the range] If any measurement in the above table is between 0 to several 100 Ω, replace the indoor P.C. board together with the motor since the indoor P.C. board is damaged.

Is F01 of the

indoor P.C.

board open?

Is R04 or R05

of the indoor P.C.

board open?

YES

Replace the indoor P.C.

board (MCC-1643).

Replace the indoor P.C.

board (MCC-1643).

Check the indoor P.C.

board (MCC-1643).

If faulty Replace

– 77 –

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

* Please refer to the multi outdoor unit service manual excluding these.

Check code

[E11 error]

Is the

connection for the

UART communication

connector (Internal board

CN521 red/Optional

board CN1 red)

normal?

Ye s

Repair of connector

connection.

Is connector

lead wire for the UART

communication

cut?

Red LED (LD1)

of external output board

not illuminated.

Red LED (LD1)

light on the external input/

output board flashes

on and off.

Ye s

Replacement of the

connector fs lead wire.

Lead wire is cut or fault

of input/output board.

Fault with the external

input/output board

→ Replace

Red LED (LD1)

of external input/output

board blinks.

Check the operating status.

Ye s

Fault with the external

input/output board

→ Replace

– 78 –

8-6. 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]

– 79 –

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

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

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

Check periodically signs of rust or scratches, etc. on coating of the outdoor units. Repair the defective position or apply the rust resisting paint if necessary. If an indoor unit operates for approx. 8 hours or more per day, usually it is necessary to clean the indoor/

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

trouble on the compressor.

Part name

Heat exchanger • Blocking with dust, damage check • Clean it when blocking is found.

Fan motor • Audibility for sound • When abnormal sound is heard

Filter

Fan

Suction/ Discharge grille

Drain pan

Face panel, Louver

External appearance

Object

Indoor Outdoor

—

Contents of check Contents of maintenance

• Visual check for dirt and breakage

• Visual check for swing and balance

• Check adhesion of dust and external appearance.

• Visual check for dirt and scratch

• Check blocking by dust and dirt of drain water.

• Check dirt and scratch. • Cleaning/Coating with repair painting

• Check rust and pealing of insulator

• Check pealing and floating of coating film

• Clean with water if dirty

• Replace if any breakage

• Replace fan when swinging or balance is remarkably poor.

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

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

• Clean drain pan, Inclination check

• Coating with repair painting

To open the access panel

Use a screwdriver to unfasten the screws of the access panel (two places), slide the cabinet upward by approximately 30mm, and pull it out toward you.

Access panel

Screws

– 80 –

9. P.C. BOARD EXCHANGE PROCEDURES

Indoor unit

9-1. Replacement of indoor P.C. boards

Part code Model type P.C. board type

431-6V-549 MMF-AP

<Note: when replacing the P.C. board for indoor unit servicing>

The nonvolatile memory (hereafter called EEPROM, IC503) on the indoor unit P.C. board before replacement includes the model specific type information and capacity codes as the factory-set value and the important setting data which have been automatically or manually set when the indoor unit is installed, such as system/ indoor/group addresses, high ceiling select setting, etc. When replacing the P.C. board for indoor unit servicing, follow the procedures below. After replacement completes, confirm whether the settings are correct by checking the indoor unit No., Group header unit/follower unit settings and perform the cooling cycle confirmation through the trial operation.

CASE 1

Before replacement, the indoor unit can be turned on and the setting data can be read out by wired remote control operation.

6H series MCC-1643

∗∗∗

EEPROM data read out [1]

Replacement of P.C. board for Indoor unit servicing and power on [2]

Writing the read out EEPROM data [3]

Power reset

(for all indoor units connected to the remote control when the group operation control is performed.)

CASE 2

The EEPROM before replacement is defective and the setting data cannot be read out.

EEPROM data read out [2]

Writing the setting data to EEPROM, such as high ceiling installation setting and

optional connection setting, etc., based on the customer information. [3]

Power reset

(for all indoor units connected to the remote control when the group operation control is performed.)

– 81 –

[1] Setting data read out from EEPROM

(

)

The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out.

Step 1 Push

Step 2 Every time when the

Step 3 After writing down all setting data, push button to return to the normal stop status.

SET

, CL and button on the remote controller simultaneously for more than 4 seconds.

* When the group operation control is performed, the unit No. displayed for the first time is the header

unit No. At this time, the CODE No. (DN) shows “10 ”. Also, the fan of the indoor unit selected starts its operation and the swing operation also starts if it has the louvers.

control is displayed in order. Specify the indoor unit No. to be replaced.

1. Change the CODE No. (DN) to setting. (this is the setting for the filter sign lighting time.) At this time, be sure to write down the setting data displayed.

2. Change the CODE No. (DN) by pushing / buttons for the temperature setting. Similarly, be sure to write down the setting data displayed.

3. Repeat the step 2-2 to set the other settings in the same way and write down the setting data as shown in the table 1 (example).

* The CODE No. (DN) are ranged from “ 01 ” to “ FF ”. The CODE No. (DN) may skip.

(It takes approx. 1 min until the remote controller operation is available again.)

UNIT LOUVER

(left side button) button is pushed, the indoor unit No. under the group

1010

0101

→→

→

01 by pushing / buttons for the temperature

→→

0101

CODE No. required at least

Contents

Type

Indoor unit capacity

System address

Indoor unit address

Group address

1. The CODE No. for the Indoor unit type and Indoor unit capacity are required to set the rotation number setting of the fan.

2. If the system/indoor/group addresses are different from those before replacement, the auto-address setting mode starts and the manual resetting may be required again. (when the multiple units group operation including twin system.)

[2] P.C. Board for indoor unit servicing replacement procedures

Step 1 Replace the P.C. board to the P.C. board for indoor unit servicing.

At this time, perform the same setting of the jumper wire (J01, J08, J09) setting (cut), switch SW501, (short-circuit) connector CN34 as the setting of the P.C. board before replacement.

If the plug for short-circuit is attached on the P.C. board before replacement, attach it on the P.C. board replaced.

Connector (CN504) for drain pump

CN504

White

Step 2 It is necessary to set indoor unit to be exchanged: Remote controller = 1 : 1

Based upon the system configuration, turn on power of the indoor unit with one of the following items.

1) Single (Individual) operation. Turn on power of the indoor units and proceed to [3].

2) Group operation A) In case that power of the exchanged indoor unit only can be turned on

Turn on power of the exchanger indoor unit only and proceed to [3].

CN34 (Red)

J01

SW501

J08

CN01

(BLU)

J09

Attach reactor's plug to connector CN01

– 82 –

B) In case that power of the indoor units cannot be turned on individually (Case 1)

a) Remove temporarily the group wire connected to the terminal blocks A and B of the

exchanged indoor unit.

b) After connecting the remote controller wire only to the removed terminal block, turn on power

of the indoor units and proceed to [3]. * When the above methods cannot be used, follow to the two cases below.

C) In case that power of the indoor units cannot be turned in individually (Case 2)

a) Remove all CN41 connectors of the indoor units in the same group except those of the

exchanged indoor unit.

b) Turn on power of the indoor units and proceed to [3].

* After [3] operation has finished, be sure to return the temporarily removed group wire or

CN41 connector to the original connection.

Indoor unit

P.C. board

A B

Group wire

(Case 1)

Indoor unit Indoor unit

A B

Remote

controller

Service P.C. board of the unit to be changed

Remove the group wire of the terminal blocks A and B of the changed indoor unit and then install the remote controller only.

Indoor unit

P.C. board

CN41

A B

Remove CN41 connectors of the indoor units other than the units to be changed in the same group.

(Case 2)

A B A B

Group wire

Remote

controller

Service P.C. board of the unit to be changed

[3] Writing the setting data to EEPROM

The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values.

Step 1 Push

Step 2 Every time when

Step 3 Select the CODE No. (DN) can be selected by pushing the / button for the temperature setting.

SET

, CL and buttons on the remote controller simultaneously for more than 4 seconds.

* In the group control operation, the unit No. displayed for the first time is the header unit No.

At this time, the CODE No. (DN) shows “10 ”. Also, the fan of the indoor unit selected starts its operation and the swing operation starts if it has the louvers. (The unit No. “ ALL ” is displayed if the auto-address setting mode is interrupted in [2] step 2 a))

UNIT LOUVER

(left side button) button is pushed, the indoor unit No. in the group control operation are displayed in order. (The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values.) Specify the indoor unit No. with its P.C. board replaced to the P.C. board for indoor unit servicing. (You cannot perform this operation if “ ALL ” is displayed.)

• Set the indoor unit type and capacity.

The factory-set values shall be written to the EEPROM by changing the type and capacity.

1. Set the CODE No. (DN) to10 . (without change)

2. Select the type by pushing / buttons for the timer setting.

(For example, 4-way Cassette Type is set to “0001”. Refer to table 2)

3. Push

SET

button.

(The operation completes if the setting data is displayed.)

4. Change the CODE No. (DN) to “11 ” by pushing / buttons

for the temperature setting.

5. Select the capacity by pushing / buttons for the timer setting.

(For example, AP027 Type is set to “0012”. Refer to table 3)

6. Push

SET

button.

(The setting completes if the setting data are displayed.)

– 83 –

<Fig. 1 RBC-AMT32E>

3651 42

Step 4 Write the on-site setting data to the EEPROM, such as address setting, etc. Perform the steps 1 and 2

above again.

Step 5 Change the CODE No. (DN) to “ 01 ” by pushing / buttons for the temperature setting.

(this is the setting for the filter sign lighting time.)

Step 6 Check the setting data displayed at this time with the setting data put down in [1].

1. If the setting data is different, modify the setting data by pushing / buttons for the timer setting

to the data put down in [1]. The operation completes if the setting data is displayed.

2. If the data is the same, proceed to next step.

Step 7 Change the CODE No. (DN) by pushing / buttons for the temperature setting.

As described above, check the setting data and modify to the data put down in [1].

Step 8 Repeat the steps 6 and 7.

Step 9 After the setting completes, push button to return to the normal stop status.

(It takes approx. 1 min until the remote controller operation is available again.) * The CODE No. (DN) are ranged from “ 01 ” to “ FF ”. The CODE No. (DN) is not limited to be serial No.

Even after modifying the data wrongly and pushing

SET

button, it is possible to return to the data

before modification by pushing CL button if the CODE No. (DN) is not changed.

<Fig. 2 EEPROM layout diagram>

The EEPROM (IC503) is attached to the IC socket. When detaching the EEPROM, use a tweezers, etc. Be sure to attach the EEPROM by fitting its direction as shown in the figure. * Do not bend the IC lead when replacing.

EEPROM

Cut out

EEPROM

Cut out

IC socke

– 84 –

Table 1. Setting data (CODE No. table (example))

CODE No. (DN)

Filter sign lighting time Depending on Type

02 Filter pollution level 0000: standard

03 Central control address 0099: Not determined

06 Heating suction temperature shift

0F Cooling only 0000: Heat pump

10 Type Depending on model type

11 Indoor unit capacity Depending on capacity type

12 System address 0099: Not determined

13 Indoor unit address 0099: Not determined

14 Group address 0099: Not determined

19 Louver type (wind direction adjustment) Depending on Type.

Temperature range of cooling/heating automatic SW control point

28 Power failure automatic recovery 0000: None

2b Thermo output SW (T10

31 Ventilation fan (standalone) 0000: Not available

32 Sensor SW (Selection of static pressure) 0000: Body sensor

60 Timer setting (wired remote controller) 0000: Available

Demand setting (outdoor unit current demand)

d0 Remote controller operation save function 0001: Enable

F6 Presence of Application control kit 0000: None

Item

Setting data Factory-set value

0002: +2 ˚C (flooring installation type: 0)

0003: 3 deg (Ts ±1.5)

) 0000: Thermo ON

0075: 75 %

Table 2. Type: CODE No. 10

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

0013 Floor Standing MMF-AP

∗∗∗H∗

Table 3. Indoor unit capacity: CODE No. 11

0000*

0001

0002

0003

0004

0005

0006

0007

0008

0009

0010

0011

0012

0013

0014

0015

Invalid

007 type

—

009 type

—

012 type

—

015 type

—

018 type

—

024 type

027 type

030 type

—

036 type

* EEPROM initial value on the P.C. board for indoor

unit servicing.

0016

0017

0018

0019

0020

0021

0022

0023

0024

0025

0026

0027

0028

0034

—

048 type

056 type

—

072 ype

—

096 type

—

– 85 –

10. DETACHMENTS

WARNING

Be sure to stop operation of the air conditioner before work and then turn off switch of the breaker.

No. Part name Procedure Remarks

Intake grille1 1. Detachment

1) Remove the two screws that fix the intake grille.

• The screws are designed to stay on the

intake grille.

2) Pull the upper part of the intake grille toward you, remove two strings that connect the intake grille with the main unit, and then remove the intake grille while lifting up it.

2. Attachment

1) Attach the intake grille in the reverse way of detachment, and then fix it with two screws.

CAUTION

For reason of safety, be sure to fix the intake grille with screws.

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

CAUTION

Screw

Intake grille

– 86 –

No. Part name Procedure Remarks

Electric parts

box

1. Detachment

1) Carry out the work of item 1-1.

Screw 1

2) Remove the Screw 1 (two screws) from the drip-proof cover on the bottom plate.

Screw 1

* This work is unnecessary for Models

AP036 to AP056.

Screw 2

3) Remove the Screw 2 (two screws) from the electrical control box cover.

4) Remove the the indoor/outdoor communication wires and the remote controller wires from each terminal block.

5) Remove the connectors and others which connected to P.C. board.

Electrical control box

Screw 2

NOTE

When removing the connectors, unlock the lock.

CN01 : Reactor (3P, Blue) CN40 : Indoor/Outdoor communication

terminal block (2P, Blue)

CN41 : Remove controller terminal block

(2P, Blue)

CN67 : Power supply terminal block

(5P: Black) CN82 : PMV output (6P, Blue) CN100 : TC1 sensor (3P, Brown)

Screw 3 Screw 3

P.C. board

CN101 : TC2 sensor (2P: Black) CN102 : TCJ sensor (2P, Red) CN104 : Room temperature (2P, Yellow) CN210 : Fan motor (7P, White) CN510 : Louver motor (20P, White)

Drip-proof cover

Electrical control box cover

6) Remove the Screw 3 (two screws) that fix the electric parts box, slide it toward right, and then remove the electric parts box.

7) Unlock the lock of the card edge spacer, and then remove the P.C. board.

2. Attachment

1) Attach the P.C. board and the electric parts box, and then perform wiring as before.

2) Attach the electrical control box cover and the drip-proof cover.

NOTE

• Check there is no incorrect wiring or no dislocation of connector.

• Set the connected part of tube of the fan motor lead wire at a place out of the electric parts box.

Connected part of tube

Card edge spacer

– 87 –

No. Part name Procedure Remarks

Access panel3

1. Detachment

1) Carry out the work of item 1-1.

2) Remove the two screws of the Access panel, slide the Access panel approx. 30mm upward, and remove the Access panel while drawing it toward you.

• The screws are designed to stay on the

Access panel.

2. Attachment

1) Attach the Access panel in the reverse way

Access panel

of detachment, and then fix it with two screws.

CAUTION

For reason of safety, be sure to fix the Access panel with screws.

– 88 –

Screw 1

Fan

Screw 1

Motor base

Screw1

Fan motor

Screw 2

Screw 3

Screw 5

Shield plate assembly

Screw 5

Screw 4

Bell mouth

Fan

Fan motor

Motor band

Fan end face

Motor shaft end face

Screw 8

Motor fixing plate

No. Part name Procedure Remarks

Fan,

4 1. Detachment

Fan motor

1) Carry out the works of items 1-1 and 3-1.

2) Cut off the bundling band that fixes the fan motor lead wire to remove the fan motor connector in the electric parts box.

Screw 1

AP015 ~ AP027

3) Remove the Screw 1 (five screws) that fix the motor base, and then take out the motor base, fan motor, and fan.

4) Loosen a Screw 2 that fixes the fan and

Fan motor

then remove the fan.

5) Remove the Screw 3 (three screws) and then remove the fan motor.

AP036 ~ AP056

3) Remove the Screw 4 (three screws) that fix the shield plate assembly, and then remove the shield plate assembly.

4) Remove the Screw 5 (five screws) that fix the ceiling plate of the fan assembly, and then draw out the fan with assembly.

5) Remove the Screw 6 (four screws) that fix the motor fixing plate, and then remove the

Screw 3

Shield plate assembly

motor fixing plate.

6) Remove the Screw 7 (four screws for left

7) Remove the a screw that fixes the fan, and

and right each) that fixes right and left bellmouth, take off left and right fan case fixing Screw 8 (four screws for left and right), and then remove the fan case.

Screw 5

Screw 4

then remove the fan from the fan motor.

8) Remove the Screw 9 (a screw for right and left each) of the left and right motor band, and then remove the fan motor.

Fan assembly

Screw 7

Screw 6

Screw 8

2. Attachment

1) Attach the fan motor, fan and others in the reverse way of detachment, and then

Bell mouth

perform wiring as before.

Fan

NOTE

Fan

• Mount AP015 to AP027 fans so that bump difference when putting motor shaft end face

• For attachment of AP036 to AP056 fans, set

• Tighten the fan screw with 4.9N•m or more

and fan end face together is within ± 1mm.

so that the fan locates at the center of the fan case.

Fan motor

Screw 6

with a torque wrench.

Fan

Screw 1

Motor base

Screw1

Screw 2

Screw 5

Fan ceiling plate

Screw 8

Motor fixing plate

Fan case

Motor band

– 89 –

Fan end face

Motor shaft end face

Screw 9

No. Part name Procedure Remarks

Relay connector

Banding band (2 positions)

PMV lead wire

Tube (for waterproof)

To PMV coil

Relay connector

Banding band (2 positions)

Tube (for waterproof)

(

)

Heat

5 1. Detachment

exchanger

1) Carry out the works of items 1-1 and 3-1.

AP015 to AP027

2) Remove the tube of the relay part of PMV, and then remove the relay connector.

3) Remove the Screw 1 (four screws) that fixes the main unit and heat exchanger assembly, and then draw out the heat exchanger assembly toward you.

4) Remove the Screw 2 (two screws) of the heat exchanger, and then remove the upper shield plate.

5) Remove the Screw 3 (four screws) of the heat exchanger assembly, and then remove the shield plate.

6) Remove three types of temperature sensors from the heat exchanger assembly.

AP036 to AP056

2) Remove the tube of the PMV relay part to remove the relay connector.

3) Remove the Screw 1 (three screws) that fixes the main unit and the heat exchanger assembly, and then draw out the heat exchanger assembly toward you.

4) Remove the Screw 2 (two screws) of the heat exchanger assembly, and then remove the upper shield plate.

5) Remove the Screw 3 (four screws) of the heart exchanger assembly, and then remove the shield plate.

6) Remove three types of the temperature sensors from the heat exchanger assembly.

To PMV coil

Screw 2 Screw 2

Screw 1

PMV lead wire

Tube

Tube (for waterproof)

(for waterproof)

To circuit board CN082 (Blue)

Screw 2

Tube (for

Tube (for waterproof)

waterproof)

To circuit board CN082

Upper shield

Screw 1

Relay connector

Banding band

Banding band (2 positions)

(2 positions)

Upper shield

Relay connector

Banding band

Banding band (2 positions)

(2 positions)

Shield plate

Screw 1 Screw 1

To PMV coil

PMV lead wire

Shield plate

Blue

Screw 1

Screw 3

Screw 2

Screw 3

2. Attachment

1) Attach the temperature sensor, shield plate, and heat exchanger assembly in the reverse way of the detachment, and then perform wiring of PMV relay lead wire as before.

– 90 –

11. EXPLODED VIEWS AND PARTS LIST

MMF-AP0156H

205

217

201

, MMF-AP0186H

∗∗

∗

∗∗

219

220

215

, MMF-AP0246H

∗∗

∗

∗∗

251

206

213

237

249

, MMF-AP0276H

∗∗

∗

∗∗

236

216

235

221, 222, 223

∗∗

∗

∗∗

202

252

242

238

255, 256 257 258

239, 240

250

212

210

254

253

226, 227, 228, 229, 243, 246

230, 231, 232, 233, 244, 245

– 91 –

Location

No.

201 202 205 206 210 212 213 215 216 217 219 220 221 222 223 224 226 227 228 229 230 231 232 233 235 236 237 238 239 240 242 243 244 245 246 249 250 251 252 253 254 255 256 257 258

Part No. Description

43109392 43100388 43F2C076 4312C133 43146707 43146726 43120271 43180238 43139132 4310A119 43101357 43101345 4314J410 4314J411 4314J358 4314J359 43F47685 43149355 43049776 43149351 43047688 43149352 43149353 43149354 43139093 3759V024 43109207 43100373 4314Q084 4314Q085 43107215 43F47609 43147195 43194029 43F49697 43172090 43197136 43109412 43F19904 43149314 43147664 43166011 43166012 43166022 43166018

GRILLE, INLET CASE ASSY MOTOR, LOUVER MOTOR, FAN, ICF-340D62-1 MOTOR, PMV, EDM-MD12TF-3 BODY, PMV FAN, MULTI BLADE AIR FILTER CLAMP, GRILLE CABINET ASSY PANEL, REMOTE CONTROLER COVER, REMOTE CONTROLER EVAPORATOR ASSY EVAPORATOR ASSY REFRIGERATION CYCLE ASSY REFRIGERATION CYCLE ASSY NUT, FLARE, 1/4, IN NUT, FLARE, 3/8, IN SOCKET, 3/8, IN SOCKET, 1/4, IN NUT, FLARE, 1/2, IN NUT, FLARE, 5/8, IN SOCKET, 1/2, IN SOCKET, 5/8, IN CONNECTION ROD GRILLE ASSY GRILLE, OUTLET, VERTICAL CABINET, LOWER DISTRIBUTOR ASSY DISTRIBUTOR ASSY HOLDER, SENSOR BONNET, 3/8, IN BONNET, 1/2 IN BONNET, 5/8 IN BONNET, 1/4, IN PAN, DRAIN WASHER GRILLE, OUTLET, HORIZONTAL HOLDER, SENSOR (TS) SHEET, PMV STRAINER REMOTE CONTROLLER, SX-A4EE REMOTE CONTROLLER, SX-A5EE REMOTE CONTROLLER, SX-U01EE REMOTE CONTROLLER, WIRELESS, WH-L11SE

Q’ty/Set MMF-AP

0156 0186 0246 0276

2 1 1 1 1 1 1 1 2 1 1 1 1

1 1

5 1 5 1 1

1 1 1 5 2 1 1 1 1 1 1

2 1 1 1 1 1 1 1 2 1 1 1 1

1 1

5 1 5 1 1

1 1 1 5 2 1 1 1 1 1 1

∗∗∗∗

2 1 1 1 1 1 1 1 2 1 1 1

1 1

1 5 1 5 1

1 1 1

1 1 5 2 1 1 1 1 1 1

H-E(TR)

2 1 1 1 1 1 1 1 2 1 1 1

1 1

1 5 1 5 1

1 1 1

1 1 5 2 1 1 1 1 1 1

– 92 –

MMF-AP0366H

, MMF-AP0486H

∗∗

∗

∗∗

, MMF-AP0566H

∗∗

∗

∗∗

∗

∗∗

205

201

218

251

219

220

223

214

249

237

236

235

216

247, 248

208

203

238

252

242

215

255, 256 257 258

250

211

210

253

254

241

227, 228, 243

231, 233, 245

– 93 –

Location

No.

201 203 205 208 210 211 214 215 216 218 219 220 223 224 227 228 231 233 235 236 237 238 241 242 243 245 247 248 249 250 251 252 253 254 255 256 257 258

Part No. Description

43109392 43102650 43F2C076 4312C134 43146707 43146723 43120272 43180238 43139132 4310A120 43101357 43101345 4314J412 4314J360 43149355 43049776 43149352 43149354 43139093 3759V024 43109207 43100373 4314Q086 43107215 43F47609 43194029 43139154 43139155 43172090 43197136 43109412 43F19904 43149314 43147664 43166011 43166012 43166022 43166018

GRILLE, INLET CASE ASSY MOTOR, LOUVER MOTOR, FAN, ICF-340WD109-1 MOTOR, PMV, EDM-MD12TF-3 BODY, PMV FAN, MULTI BLADE AIR FILTER CLAMP, GRILLE CABINET ASSY PANEL, REMOTE CONTROLER COVER, REMOTE CONTROLER EVAPORATOR ASSY REFRIGERATION CYCLE ASSY NUT, FLARE, 3/8, IN SOCKET, 3/8, IN NUT, FLARE, 5/8, IN SOCKET, 5/8, IN CONNECTION ROD GRILLE ASSY GRILLE, OUTLET, VERTICAL CABINET, LOWER DISTRIBUTOR ASSY HOLDER, SENSOR BONNET, 3/8, IN BONNET, 5/8, IN BAND, MOTOR, LEFT BAND, MOTOR, RIGHT PAN, DRAIN WASHER GRILLE, OUTLET, HORIZONTAL HOLDER, SENSOR (TS) SHEET, PMV STRAINER REMOTE CONTROLLER, SX-A4EE REMOTE CONTROLLER, SX-A5EE REMOTE CONTROLLER, SX-U01EE REMOTE CONTROLLER, WIRELESS, WH-L11SE

Q’ty/Set MMF-AP

0366 0486 0566

2 1 1 1 1 1 2 1 2 1 1 1 1 1 1 1 1 1 5 1 5 1 1 1 1 1 2 2 1 1 5 2 1 1 1 1 1 1

∗∗∗∗

H-E(TR)

2 1 1 1 1 1 2 1 2 1 1 1 1 1 1 1 1 1 5 1 5 1 1 1 1 1 2 2 1 1 5 2 1 1 1 1 1 1

– 94 –

E-Parts

404

402

406

405

401

407

408

403

Location

No.

401 402 403 404 405 406 407 408

Part No. Description

44258091 43050425 43150320 43459017 43160575 4316V549 43F50426 43160582

REACTOR, CH-49-Z-T SENSOR ASSY, SERVICE,TC(F6) SENSOR ASSY, SERVICE,TG(F4) PC BOARD ASSY, TCB-PCUC1E TERMINAL BLOCK, 2P, 20A PC BOARD ASSY, MCC-1643 SENSOR, SERVICE, TA TERMINAL, 4P

– 95 –

Q’ty/Set MMF-AP

0156, 0186, 0246, 0276, 0366, 0486, 0566

1 2 1 1 1 1 1 1

∗∗∗∗

H-E(TR)

WARNINGS ON REFRIGERANT LEAKAGE

Check of Concentration Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit.

The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its concentration should rise excessively. Suffocation from leakage of R410A is almost non-existent. With the recent increase in the number of high concentration buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared with conventional individual air conditioners. If a single unit of the multi conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an emergency, measures can be made before injury can occur). In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device. The concentration is as given below.

Total amount of refrigerant (kg)

Min. volume of the indoor unit installed room (m

≤ Concentration limit (kg/m

)

Important

NOTE 2 :

The standards for minimum room volume are as follows. (1) No partition (shaded portion)

(2) When there is an effective opening with the adjacent room

for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).

Outdoor unit

Refrigerant piping

Indoor unit

(3) If an indoor unit is installed in each partitioned room and

the refrigerant piping is interconnected, the smallest room of course becomes the object. But when a mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object.

Refrigerant piping

The concentration limit of R410A which is used in multi air conditioners is 0.3kg/m

NOTE 1 :

If there are 2 or more refrigerating systems in a single refrigerating device, the amounts of refrigerant should be as charged in each independent device.

e.g., charged amount (10kg)

Room A Room B Room C Room D Room E Room F

Outdoor unit

e.g., charged amount (15kg)

Indoor unit

For the amount of charge in this example:

The possible amount of leaked refrigerant gas in rooms A, B and C is 10kg. The possible amount of leaked refrigerant gas in rooms D, E and F is 15kg.

Outdoor unit

Very small room

Small room

Mechanical ventilation device - Gas leak detector

Medium room

Large room

Indoor unit

NOTE 3 :

The minimum indoor floor area compared with the amount of refrigerant is roughly as follows: (When the ceiling is 2.7m high)

Range below the

density limit of

0.3 kg/m

(countermeasures not needed)

Min. indoor floor area

10 20 30

Total amount of refrigerant kg

Range above the density limit of

0.3 kg/m (countermeasures needed)

TOSHIBA CARRIER CORPORATION

72-34 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8585, JAPAN

Toshiba MMF-AP0156H-E, MMF-AP0186H-E, MMF-AP0246H-E, MMF-AP0276H-E, MMF-AP0366H-E Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual