Toshiba MMD-AP0481HFE Service Manual
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Toshiba MMD-AP0481HFE Service Manual

Toshiba MMD-AP0481HFE Service Manual

Fresh air intake indoor unit for s-mms
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See also: Owner's Manual , Installation Manual
FILE NO. A06-016

SERVICE MANUAL

FRESH AIR INTAKE INDOOR UNIT
for S-MMS
INDOOR UNIT
MMD-AP0481HFE
MMD-AP0721HFE
MMD-AP0961HFE
OUTDOOR UNIT
• For Service Manual of S-MMS and outdoor unit, refer to the Service Manual
(File No. A03-009, A03-010).
R410A
PRINTED IN JAPAN, Jun,2007 ToMo

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Summary of Contents for Toshiba MMD-AP0481HFE

  • Page 1: Service Manual

    FILE NO. A06-016 SERVICE MANUAL FRESH AIR INTAKE INDOOR UNIT for S-MMS INDOOR UNIT MMD-AP0481HFE MMD-AP0721HFE MMD-AP0961HFE OUTDOOR UNIT • For Service Manual of S-MMS and outdoor unit, refer to the Service Manual (File No. A03-009, A03-010). R410A PRINTED IN JAPAN, Jun,2007 ToMo...

  • Page 2: Table Of Contents

    ADOPTION OF NEW REFRIGERANT This Fresh Air Intake Indoor Unit for S-MMS is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer. WARNING Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it.
  • Page 3 6. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........49 6-1. Fresh Air Intake Indoor Unit for S-MMS ............... 49 7. WIRING DIAGRAM ................... 50 7-1. Fresh Air Intake Indoor Unit for S-MMS ............... 50 8. REFRIGERATING CYCLE DIAGRAM ............52 8-1. Fresh Air Intake Indoor Unit for S-MMS ............... 52 9.

  • Page 4: Safety Caution

    SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them. [Explanation of indications] Indication Explanation...
  • Page 5 WARNING Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs. If the earth wire is not correctly connected, contact an electric engineer for rework. Check earth wires.
  • Page 6 WARNING After the work has finished, be sure to use an insulation tester set (500V mugger) to check the resistance is 2MΩ Ω Ω Ω Ω or more between the charge section and the non-charge metal section (Earth position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s Insulator check side.
  • Page 7 • New Refrigerant (R410A) This air conditiner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
  • Page 8 4. Tools 1. Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.

  • Page 9: Outline Of Fresh Air Intake Indoor Unit

    1. OUTLINE OF FRESH AIR INTAKE INDOOR UNIT • Type: Concealed Duct High Static Pressure type Three models (5HP , 8HP , 10HP) are prepared. • Connectable outdoor unit Three series (MMY-APXXXXT8, APXXXXHT8, APXXXXHT7) of Cooling only and Heat pump super modular multi type outdoor unit •...

  • Page 10: S-Mms System Specifications To Connect Fresh Air Intake Indoor Unit

    1-1. S-MMS System Specifications to Connect Fresh Air Intake Indoor Unit 1-1-1. Combination Conditions The fresh air intake indoor unit is connectable to S-MMS (Super Modular Multi system). However this is not connectable to S-HRM (Super Heat Recovery Multi system). 0.5m or less Up to two fresh air intake indoor units 80 to 100% to capacity of the outdoor units...
  • Page 11 n System able to be combined Super Module Multi System (S-MMS) Cooling only and Heat pump series Super heat recovery multi and Mini-SMMS cannot be connected. n Range of combination • The total capacity of the indoor air conditioners and the fresh air intake indoor units is restricted 80% to 100% against the capacity of the outdoor units.

  • Page 12: Specifications

    2. SPECIFICATIONS 2-1. Fresh Air Intake Indoor Unit for S-MMS Model Indoor unit MMD- AP0481HFE AP0721HFE AP0961HFE Cooling capacity (kW) 22.4 28.0 Heating capacity (kW) 13.9 17.4 Power supply Single phase 230V (220 – 240V) 50Hz / 220V 60Hz Running current 1.43 / 1.66 2.52 / 2.75 2.73 / 3.12...

  • Page 13: Specifications Of Electrical Parts

    3. SPECIFICATIONS OF ELECTRICAL PARTS 3-1. Fresh Air Intake Indoor Unit for S-MMS MMD-AP0481HFE, MMD-AP0721HFE, MMD-AP0961HFE Model MMD-AP0481HFE MMD-AP0721HFE, MMD-AP0961HFE Fan motor STF200-160-4AR Running capacitor for fan motor 400V 6µF 400V 4µF Transformer TT13 TA sensor Lead wire length: 1200mm...

  • Page 14: Owner's Manual

    4. OWNER’S MANUAL PARTS NAME Fresh air Intake indoor unit MMD-AP0481HFE, MMD-AP0721HFE, MMD-AP0961HFE Air intake port Air supply port Cools/heats the fresh air and Intakes the fresh air with the inlet flange. sends it into the room with the air supply flange.

  • Page 15: Parts Name Of Remote Controller

    PARTS NAME OF REMOTE CONTROLLER This remote controller can singly operate maximum 8 indoor units. However one remote controller cannot operate the fresh air intake indoor unit air conditioner together with the indoor units for air conditioner. If the operation contents have been set up once, the air conditioner can be operated according to the setup contents by pushing only ON/OFF button.
  • Page 16 Operation section Push each button to select a desired operation. ON / OFF • The details of the operation needs to be set up once, the same states are used by pushing button. TEMP . ON / OFF TIMER SET MODE TIME SWING/FIX...

  • Page 17: Correct Usage

    CORRECT USAGE When you use the air conditioner for the first time or when you change SET DATA value, follow the procedure below. ON / OFF From the next time, the operation will start as set state by pushing the button.
  • Page 18 Operation mode and Function COOL : Cools the fresh air and sends it into the room HEAT : Heats the fresh air and sends it into the room : Sends the fresh air as it is • The air conditioner with the fresh air intake indoor unit controls temperature of the supply air so that it is close to the setup temperature of the remote controller.

  • Page 19: Timer Operation

    TIMER OPERATION A type of timer operation can be selected from the following three types. OFF timer : The operation stops after the set time has passed. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts after the set time has passed.

  • Page 20: Installation Manual

    5. INSTALLATION MANUAL Accessory parts and Parts to be procured locally H Accessory parts Part name Q’ty Shape Usage Installation Manual This manual (Be sure to hand over to customers) For heat insulation of Gas pipe connecting section For heat insulation of Liquid pipe connecting section Heat insulator For heat insulation of hanging bracket (AP048) For heat insulation of hanging bracket (AP072, AP096)
  • Page 21 PRECAUTIONS FOR SAFETY WARNING • Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner. Inappropriate installation may result in water leakage, electric shock or fire. • Turn off the main power supply switch or breaker before attempting any electrical work. Make sure all power switches are off.

  • Page 22: System Control Of Fresh Air Intake Indoor Unit

    SYSTEM CONTROL OF FRESH AIR INTAKE INDOOR UNIT System able to be combined The fresh air intake indoor unit is connectable to S-MMS (Super Modular Multi system). However this is not connectable to S-HRM (Super Heat Recovery Multi system and Mini-SMMS). 0.5m or less Up to two fresh air intake indoor units 80 to 100% to capacity of the outdoor units...

  • Page 23: Selection Of Installation Place

    SELECTION OF INSTALLATION PLACE WARNING • Install the air conditioner at enough strong place to withstand the weight of the unit. If the strength is not enough, the unit may fall down resulting in injury. • Install the air conditioner at a height 2.5m or more from the floor. If you insert your hands or others directly into the unit while the air conditioner operates, it is dangerous because you may contact with revolving fan or active electricity.

  • Page 24: Installation Space

    Installation space Keep the space necessary for installation and service. REQUIREMENT 1. Before installation of the unit, mount the accessories sold separately (Drain-up kit, etc.) to the unit. In addition to the air inlet panel, set also the check port at the side face. 2.

  • Page 25: Installation Of Indoor Unit

    INSTALLATION OF INDOOR UNIT WARNING Install the air conditioner certainly to sufficiently withstand the weight. If the strength is insufficient, the unit may fall down resulting in human injury. Perform a specified installation work to guard against strong wind or earthquake. An incomplete installation can cause accidents by the units falling and dropping.
  • Page 26 Installation of hanging bolt Use M10 hanging bolts (4 pcs, to be local procure). Matching to the existing structure, set pitch according to size in the unit external view as shown below. New concrete slab Steel flame structure Existing concrete slab Install the bolts with insert brackets or anchor Use existing angles or install new Use a hole-in anchors, hole-in...
  • Page 27 INSTALLATION OF INDOOR UNIT Thermal insulation Installation of indoor unit 1. Install temporarily the indoor unit. • Attach the hanging bracket to the hanging bolt. Hanging bolt Be sure to fix the hanging bracket from both up Nut (Upper side) and down sides of the hanging bracket by using the nuts (M10 procured locally) and the washer.

  • Page 28: Duct Work

    DUCT WORK CAUTION Be sure to apply heat insulation to the duct to prevent dewy condition. If there is an incomplete duct work, the water leakage into the room may happen. REQUIREMENT • In order to prevent short circuits, design the duct work so that the intake and discharge openings are not adjacent to each other.
  • Page 29 DUCT WORK Connecting flange Refer to size in the figure attached to the main unit. <MMD-AP0481HFE> <MMD-AP0721HFE, AP0961HFE> <Air supply port connecting flange> <Air supply port connecting flange> 1130 1080 8-Ø8 hole 10-Ø8 hole <Air inlet port connecting flange> <Air inlet port connecting flange>...
  • Page 30 <Procured locally/Construction> Air supply duct ∗1 High-performance filter Air supply flange Air inlet flange Heat insulator ∗1 Pre-filter Air inlet duct ∗1 Descending inclination (Sold separately) Hood Heat insulator ∗1 Canvas duct ∗1 Canvas duct ∗1 Filter chamber Product main unit (with wire netting) ∗1 Check port...

  • Page 31: Drain Piping Work

    DRAIN PIPING WORK CAUTION • Following the Installation Manual, perform the drain piping work so that water is properly drained, and apply a heat insulating so as not to cause a dewing. Inappropriate piping work may result in water leakage in the room and wet of furniture.

  • Page 32: Refrigerant Piping

    They are different according to the used outdoor unit. For details, refer to the Installation Manual attached to the outdoor unit. Piping material and dimensions Phosphor deoxidization seamless pipe for air conditioner Piping material Model MMD-AP0481HFE MMD-AP0721HFE, AP0961HFE Gas side Ø15.9 Ø22.2 Pipe size (mm) Liquid side Ø9.52...
  • Page 33 REFRIGERANT PIPING • Projection margin in flaring : Airtight test/Air purge, etc. B (Unit : mm) For airtight test, air purge, addition of refrigerant, and gas leak check, follow the Installation Manual Rigid (Clutch type) attached to the outdoor unit. Conventional REQUIREMENT R410A tool used...

  • Page 34: Electric Work

    ELECTRIC WORK WARNING 1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external strength of the wires do not transmit to the connecting part of the terminals. Incomplete connection or fixation may cause a fire, etc. 2.
  • Page 35 ELECTRIC WORK Specifications Power supply cord and communication wires are procured locally. For the power supply specifications, follow to the table below. If capacity is little, it is dangerous because overheat or seizure may be caused. For specifications of the power capacity of the outdoor unit and the power supply wires, refer to the Installation Manual attached to the outdoor unit.

  • Page 36: Wiring The Indoor Unit

    Wiring the indoor unit Be sure to connect the wire while matching the terminal numbers. Incorrect connection causes a trouble. <MMD-AP0481HFE> <MMD-AP0721HFE, AP0961HFE> U1 U2 A B U1 U2 A B R(L) S(N) R(L) S(N) R(L) S(N) Earth line Connecting cable <Wiring diagram>...

  • Page 37: Applicable Controls

    APPLICABLE CONTROLS NOTIFICATION When using the equipment at the first time, it will take a lot of time that the remote controller accepts an operation after power was on. However, it is not a trouble. • Automatic address • While automatic addressing, the operation cannot be performed on the remote controller. •...
  • Page 38 Change of lighting term of filter sign According to the installation condition, the lighting term of the filter sign (Notification of filter cleaning) can be changed. Follow to the basic operation procedure → → → → → • For the item code in Procedure , specify [01].

  • Page 39: Fan Characteristics

    Set a volume damper to the air supply duct, and then adjust the air volume so that it is kept in the range of 70 to 110% against the standard air volume. <MMD-AP0481HFE> (Standard air volume: 1080m /h, Lower limit air volume: 756m...
  • Page 40 50Hz, 240V 60Hz, 220V High static pressure tap High static pressure tap High static pressure tap High static pressure tap Mid static pressure tap Mid static pressure tap Low static pressure tap Low static pressure tap 1000 1100 1200 1000 1100 1200 Air volume (m³/h)
  • Page 41 FAN CHARACTERISTICS <MMD-AP0721HFE> (Standard air volume: 1680m /h, Lower limit air volume: 1176m /h, Upper limit air volume: 1848m 50Hz, 220V 50Hz, 230V High static pressure tap High static pressure tap Mid static Mid static pressure tap pressure tap Low static Low static pressure tap pressure tap...
  • Page 42 50Hz, 240V 60Hz, 220V High static pressure tap High static pressure tap Mid static pressure tap Mid static pressure tap Low static pressure tap Low static pressure tap High static pressure tap High static pressure tap Mid static pressure tap Mid static pressure tap Low static pressure tap...
  • Page 43 FAN CHARACTERISTICS <MMD-AP0961HFE> (Standard air volume: 2100m /h, Lower limit air volume: 1470m /h, Upper limit air volume: 2310m 50Hz, 220V 50Hz, 230V High static pressure tap High static pressure tap Mid static pressure tap Mid static pressure tap Low static Low static pressure tap pressure tap...
  • Page 44 50Hz, 240V 60Hz, 220V High static pressure tap High static pressure tap Mid static pressure tap Mid static pressure tap Low static pressure tap Low static pressure tap High static pressure tap High static pressure tap Mid static pressure tap Mid static Low static Low static...
  • Page 45 The motor wires for the fan have been connected to F at shipment from the factory. Change the wire connection if change of the external static pressure is required due to the duct resistance. <MMD-AP0481HFE> Electric parts box Control Fan motor P.C.

  • Page 46: Test Run

    TEST RUN Before test operation WARNING • Before turning on the power supply, carry out the following items. To protect the compressor at 1) Using 500V-megger, check there is 1MΩ or more between the starting time, keep power-ON terminal block of the power supply and the earth. If 1MΩ or less condition before 12 hours or more.

  • Page 47: Troubleshooting

    TROUBLESHOOTING Confirmation and check When a trouble occurred in the air conditioner, the check CODE No. code and the indoor unit No. appear on the display part UNIT No. of the remote controller. R.C. The check code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error history”...

  • Page 48: Maintenance

    New check code 1. Difference between the new check code and the current system The displaying method of the check code changes in this model and after. Check code in current system New check code Used characters Hexadecimal notation, 2 digits Alphabet + Decimal notation, 2 digits Characteristics of Few classification of communication/...

  • Page 49: Construction Views (External Views)

    Suction port connecting flange (L) (Accessory for main unit of product) X - X View detail diagram Z View Note 1) The above figure indicates Model MMD-AP0721HFE and AP0961HFE, Model MMD-AP0481HFE one fan motor and one fan is provided. AP0961HFE 1392 1260 10-M6 10-M6 Ø22.2 brazing...

  • Page 50: Wiring Diagram

    7. WIRING DIAGRAM 7-1. Fresh Air Intake Indoor Unit for S-MMS MMD-AP0481HFE (Option) 43F1 Surge absorber CN033 CN083 CN068 (GRN) (WHI) (BLU) CN030 CN104 CN102 CN101 CN100 CN103 (RED) (YEL) (RED) (BLK) (BRW) (GRN) RY007 CN080 P301 (GRN) CN073 RY004 EXCT Control P.C.
  • Page 51 MMD-AP0721HFE, MMD-AP0961HFE 43F1 Surge absorber (Option) 43F2 Surge absorber CN033 CN083 CN068 (GRN) (WHI) (BLU) CN030 CN104 CN102 CN101 CN100 CN103 (RED) (YEL) (RED) (BLK) (BRW) (GRN) RY007 CN080 P301 (GRN) CN073 RY004 EXCT (RED) Control P.C. Board RY006 CN304 (GRY) RY002 RY001 CN070...

  • Page 52: Refrigerating Cycle Diagram

    8. REFRIGERATING CYCLE DIAGRAM 8-1. Fresh Air Intake Indoor Unit for S-MMS Liquid side Gas side Sensor (TF) Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Sensor (TCJ) Sensor (TC2) Sensor (TC1) Fan motor Sensor (TA) Functional part name Function outline...

  • Page 53: Control Outline

    9. CONTROL OUTLINE 9-1. Control Specifications Item Outline of specifications Remarks When power 1) Distinction of outdoor units supply is reset When the power supply is reset, the outdoor units are distinguished, and control is selected according to the distinguished result. 2) If the power supply is reset while a trouble occurs, the check code is once cleared.
  • Page 54 Item Outline of specifications Remarks Fan control 1) On the fresh air intake indoor unit, HH tap only is provided. 2) For 1 minute after operation start, the forced fan OFF control is invalid. 3) There is no cool air discharge preventive control. 4) When refrigerant is recovered while cooling or fan operation is selected, and when cooling oil is recovered while heating operation is selected, the...
  • Page 55 Item Outline of specifications Remarks Freeze preventive 1) The cooling operation is performed as follows based on control the detected temperature of TC1 sensor, TC2 sensor (Low temperature and TCJ sensor. release) • When [J] zone is detected for 5 minutes, thermostat is forcedly off.
  • Page 56 Item Outline of specifications Remarks Drain-up kit 1) In cooling operation (including Dry operation), the drain (Separately sold kit) pump is usually operated. 2) If the float switch operates while drain pump operates, the compressor stops, the drain pump continues the operation, and a check code is output.
  • Page 57 Item Outline of specifications Remarks [Operation stand-by] <Ready stand-by>: displayed on the remote control- • [Operation stand-by] [Heating stand-by] ler. display display 1) When the following check codes are indicated. • There is an indoor air conditioner which detected indoor overflow [P10]. •...

  • Page 58: Applied Control / Function

    10. APPLIED CONTROL / FUNCTION (INCLUDING CONTROL CIRCUIT CONFIGUTATION) 10-1. Indoor Print Circuit Board <MCC-1403> – 58 –...

  • Page 59: Indoor P.c. Board Optional Connector Specifications

    10-2. Indoor P.C. Board Optional Connector Specifications Connector Function Specifications Remarks  Ventilation output Setting at shipment: Linked operation; ON with indoor air CN032 DC12V conditioner operation, OFF with stop * Single operation setting by [VENT] button of remote ‚ Output controller is performed from remote controller.

  • Page 60: Function During Test Operation

    10-3. Function during Test Operation n Cooling / Heating Test Operation Check The test operation for cooling/heating operation can be performed from either indoor remote controller or outdoor interface P .C. board. 1. Start / Stop operation of test operation •...
  • Page 61 n Operation Check Function for Indoor Air Conditioner (Function at Indoor Air Conditioner Side) This function is to check the operation by the indoor air conditioner singly without communication with the remote controller or outdoor unit. This function is available regardless of system-ON or system-OFF. However a trouble of the equipment may be caused if using this function for a long time.

  • Page 62: Function Selection Setting For Indoor Air Conditioner (For Setup, Be Sure To Use A Wired Remote Controller)

    10-4. Function Selection Setting for Indoor Air Conditioner (For setup, be sure to use a wired remote controller) <Procedure> Select a function while the air conditioner stops by RBC-AMT31E only. CODE No. DATA SETTING UNIT No. R.C. TEMP. ON / OFF TIMER SET MODE TIME...
  • Page 63 Function Select Item No. (DN) Table (Indicates items necessary to perform the applicable control at local site) Item Contents At shipment from factory Filter sign lighting time 0000: None 0001: 150H 0002: 2500H 0002: 2500H 0003: 5000H 0004: 10000H Filter dirty degree 0000: Standard 0000: Standard 0001: Heavy dirt (Half of standard time)

  • Page 64: Applicable Control Of Indoor Air Conditioner

    10-5. Applicable Control of Indoor Air Conditioner n Control system using the remote control interface (TCB-IFCB4E) [Wiring and Setting] • In case of a group control, the system operates by connecting with any indoor air conditioner (Control P .C. board) in the group. However, when taking out operation error signal from the other air conditioners, take out from the single air conditioner.
  • Page 65 n Operation of ventilating fan from remote controller [Function] • Total enthalpy heat exchanger and ventilating fan can be mounted in the system and they can be started / stopped from a wired remote controller. • Operation of the ventilating fan is available even if the indoor air conditioner does not operate. •...

  • Page 66: Demand Control

    n Leaving-on prevention control [Function] • This control controls the indoor air conditioner singly. The wire is connected to the control P .C. board of the indoor air conditioner. • In group control, the wire is connected to the indoor air conditioner (Control P.C. board) and set the item code to the connected indoor air conditioner.
  • Page 67 n Setting of indoor air conditioner in “Specific indoor air conditioner priority” mode Change the setting during stop of the system. (Be sure that setting is performed during stop of the system.) CODE No. DATA SETTING UNIT No. R.C. TEMP. ON / OFF TIMER SET MODE...

  • Page 68: Monitor Function Of Remote Controller Switch

    n Monitor function of remote controller switch Model: When using a remote controller RBC-AMT31E, the following monitor function is utilized. Calling of display <Contents> Call the service monitor mode from the remote controller. The sensor temperature or operation status of each remote controller, indoor air conditioner and outdoor unit can be observed.

  • Page 69: Trouble Diagnoses

    11. TROUBLE DIAGNOSES 11-1. Summary of trouble diagnoses 1. Before trouble diagnoses a) Applicable models All the super module multi models (Fresh air intake indoor unit: MMD-APXXXHFE, Outdoor unit: MMY-APXXXT8, MMY-APXXXHT7) b) Required tools / measuring instruments • + , – screwdrivers, spanner, radio pincher, nipper, push-pin for reset switch, etc. •...

  • Page 70: Checking Method

    11-2. Checking Method On the remote controller (Handy type, For Central control) and the interface P .C. board of the outdoor unit, LCD display part (Remote controller) to display the operation status or 7-segment display part (On the outdoor interface P .C.
  • Page 71 Check code display list (Outdoor unit) Check code display Outdoor 7-segment Representative defective position Error contents TCC-LINK central & Remote controller Sub-code No. of indoor units of normal There is no communication from indoor unit. Decrease of indoor units reception (Decrease of connected indoor units) Indoor / Outdoor communication circuit Signal cannot be sent to indoor unit.
  • Page 72 Check code display Outdoor 7-segment Representative defective position Error contents TCC-LINK central & Remote controller Sub-code Line address setup is duplicated against outdoor unit in — Duplication of outdoor line addresses different refrigerant pipe line. Duplicated indoor units with priority There are multiple indoor units with priority (Displayed in indoor unit with priority) (against indoor unit with priority)

  • Page 73: Trouble Diagnoses By Check Display Of The Remote Controller

    11-3. Trouble Diagnoses by Check Display of the Remote Controller In case of main remote controller (RBC-AMT31E) 1. Confirmation and check CODE No. When a trouble occurred on the air conditioner, the check code UNIT No. and the indoor air conditioner No. are displayed on the display R.C.
  • Page 74 In case of TCC-LINK central control remote controller (TCB-SC642TL) ZONE ZONE GROUP CODE 1234 TEST UNIT No. SET DATA SETTING R.C. GROUP SELECT ZONE 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor air conditioner No. are displayed on the display part of the remote controller.

  • Page 75: Check Code And Check Position Displayed On The Remote Controller And Outdoor Unit (7-Segment Display Of Interface)

    11-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit (7-Segment Display of Interface) Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code —...
  • Page 76 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code 01: Indoor/outdoor Automatic address start error All stop • When indoor automatic address • Setup the address again after disconnecting communication communication started, other refrigerant circuit connection with other refrigerant circuit system.
  • Page 77 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code — Duplicated outdoor All stop Outdoor addresses manually set up are Note) terminal address setup duplicated. Do not set up the outdoor address manually. No.
  • Page 78 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code — TL sensor error All stop • Resistance value of sensor is infinite or zero • Check connection of TL sensor connector. (Open/Short).
  • Page 79 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code 01: Compressor 1 side IPDU Compressor breakdown All stop Inverter current detection circuit detected • Check power voltage. (AC220–240V ± 10%). 02: Compressor 2 side over-current and stopped.
  • Page 80 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code 01: TK1 sensor error Oil level detective temp All stop • Resistance value of sensor is • Check connection of TK1 sensor connector. 02: TK2 sensor error sensor error infinite or zero.
  • Page 81 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code — — Indoor Duplicated indoor center units Corresponding There are multiple center units in • Check indoor address. unit only stops.
  • Page 82 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code — — Indoor Indoor fan motor error Corresponding • Check the lock of fan motor (AC fan). unit only stops.
  • Page 83 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code — Outdoor liquid back All stop <In cooling> • Check full close operation of outdoor PMV (1, 2). detection error While the system is operating in COOL mode, •...
  • Page 84 Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Main remote position controller Check code Sub-code 0: IGBT shortage FAN-IPDU Outdoor fan IPDU error All stop (Sub-code: 0) • Check fan motor. (Interphase short-circuit) 1: Position detection •...
  • Page 85 Error detected by TCC-LINK central control device Check code Detected Outdoor 7-segment display Check code name Status Error detection condition Check item (position) Display on central position control device Check code Sub-code — TCC-LINK TCC-LINK central control device Operation Signal is not transmit from central •...

  • Page 86: Sensor Characteristics

    11-5. Sensor Characteristics TA, TF sensor Caracteristics-1 Resistance Temperature [˚C] Caracteristics-3 TC1, TC2, TCJ sensor Resistance Resistance (10˚C or higher) (10˚C or lower) Temperature [˚C] – 86 –...

  • Page 87: Replacement Of Fan Assembly

    12. REPLACEMENT OF FAN ASSEMBLY Remove the electric parts box cover. Take off M4 screws (2 positions). Electric parts box cover Fan assembly 1) The model in the left photo is AP0721, AP0961 types. 2) The one fan is provided to AP0481 type, two are provided to AP0721, AP0961 types, respectively.
  • Page 88 Take off eight M5 screws from the cabinet and then put them on the electric parts box. Take off M5 screws (8 positions). Remove the cover plate. Cover plate Take off the self tapping M4 screws (3 positions). Removed status Pull out the fan toward you.
  • Page 89 Remove the fan assembly from the air intake unit. Fan motor Fan case, Fan Motor base Relay terminal block cover, there is the relay terminal block inside of it. Replacement of fan and fan motor Remove the relay terminal block cover. Remove the earth screw.
  • Page 90 Remove the fan motor assembly from the fan assembly. Take off M4 screws (2 positions). Z view Z view Take off M4 screws (2 positions). Take off M4 screws (2 positions). Take off M8 screws (4 positions) mounting the motor base. –...
  • Page 91 Remove parts to be replaced from the fan motor assembly. Take off M4 screws (4 positions) from the bell mouth. Remove the fan Loosen the setscrews. When replacing the fan motor, set it so that the model name label directs upward. Replace the fan motor with a new one.

  • Page 92: Board Replacing Procedures

    13. P.C. BOARD REPLACING PROCEDURES Part code Applicable Model P.C. board Model Label on P.C. board 431-6V-343 MMD-AP∗∗∗HFE series MCC-1403 03RD M02 0001 <Set the type code and capacity code and then set DN [C8] = [ ].> Notice when assembling P.C. board for indoor service Before replacement, in the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P .C.
  • Page 93 1 Read-out operation of setting contents from EEPROM (The other EEPROM contents of which settings were changed at local site than setting at shipment from factory are read out.) TEST 1) Push buttons concurrently for 4 seconds or more on the remote controller. (Corresponded to numbers in p.94.
  • Page 94 3 Write-in operation of setting contents to EEPROM (EEPROM setting contents mounted on the service P .C. board are those at shipment from factory.) TEST 1) Push buttons concurrently for 4 seconds or more on the remote controller. (Corresponded to numbers in p.94. Remote controller operation diagram) ( is displayed for UNIT No.) In this time, the item code (DN) displays .
  • Page 95 Setting contents note (Item code table (Example)) Item Contents memo At shipment from factory Filter sign lighting time 0002: 2500 hours Filter dirty degree 0000: Standard Central control address 0099: Undefined Heating suction temp shift 0000: 0°C Existence of automatic ...

  • Page 96: Exploded Views And Parts List

    14. EXPLODED VIEWS AND PARTS LIST 14-1. Fresh Air Intake Indoor Unit for S-MMS MMD-AP0481HFE 221, 222 AP0481HFE TEST ß C SETTING CODE No. SuMoTu WeTh Fr Sa DATA SETTING TEST PROGRAM1 UNIT No. ERROR PROGRAM2 R.C. PROGRAM3 TEMP. ON / OFF...
  • Page 97 MMD-AP0721HFE, MMD-AP0961HFE 221, 222 AP0721, AP0961HFE TEST ß C SETTING CODE No. SuMoTu WeTh Fr Sa DATA SETTING TEST PROGRAM1 UNIT No. ERROR PROGRAM2 R.C. PROGRAM3 TEMP. ON / OFF WEEKLY TIMER TIMER SET MODE TIME SWING/FIX VENT FILTER RESET TEST SET CL UNIT Location No.
  • Page 98 223, 224, 225 203, 236, 237 216, 217 AP0481HFE AP0721HFE AP0961HFE 210, 211, 212, 213, 214, 215 205, 206 Location Part MMD- MMD- MMD- Description AP0481HFE AP0721HFE AP0961HFE 43146707 Motor, PMV, EDM-MD12TF-3 43146723 Body, PMV — — 43146729 Body, PMV —...
  • Page 99 MMD-AP0481HFE DON'T APPLY 220-240V FOR INTER-UNIT FOR REMOTE CONTROL T10A,250V?` MMD-AP MMD-AP0721HFE, MMD-AP0961HFE ‚b‚m‚O‚P ‚q‚b ‚h‚b‚O‚P 43F2 ‚Q ”’ FAN2 43F1 ”’ T10A,250V?` ‚P FAN1   • • Ô ”’ T10A,250V?` ‚Q‚O‚O‚u‚ðˆó‰Á‚µ‚È‚¢‚±‚Æ ‚Q DON'T APP L Y 220-240V ‚Q “àŠ...
  • Page 100 WARNINGS ON REFRIGERANT LEAKAGE Important Check of Concentration Limit NOTE 2 : The room in which the air conditioner is to be installed requires a design that in the event of The standards for minimum room volume are as follows. refrigerant gas leaking out, its concentration will not (1) No partition (shaded portion) exceed a set limit.
  • Page 101 TOSHIBA CARRIER CORPORATION 2 CHOME 12-32, KONAN, MINATOKU, TOKYO, 108-0075, JAPAN Copyright © 2007 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

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