Toshiba MML-AP0074NH1-E Service Manual
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Toshiba MML-AP0074NH1-E Service Manual

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Leading Innovation
SERVICE MANUAL
AIR-CONDITIONER
MML-AP0094NH1-E, -TR
MML-AP0124NH1-E, -TR
MML-AP0154NH1-E, -TR
MML-AP0184NH1-E, -TR
• This Service Manual describes contents of the new Console indoor unit.
For the outdoor unit, refer to the Manual with FILE NO. A10-005, A07-004, A05-015.
• The service parts will be supplied by TCTC.
MML-AP0074NH1-E, -TR
FILE NO. SVM-16048
MULTI TYPE
< Console Type>
April, 2016

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  • Page 1 FILE NO. SVM-16048 Leading Innovation SERVICE MANUAL AIR-CONDITIONER MULTI TYPE < Console Type> MML-AP0074NH1-E, -TR MML-AP0094NH1-E, -TR MML-AP0124NH1-E, -TR MML-AP0154NH1-E, -TR MML-AP0184NH1-E, -TR • This Service Manual describes contents of the new Console indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A10-005, A07-004, A05-015.

  • Page 2: Table Of Contents

    CONTENTS Warning Indications on the Air Conditioner Unit ......4 1. PRECAUTIONS FOR SAFETY ............ 5 2. SPECIFICATIONS ..............13 3. CONSTRUCTION VIEWS (EXTERNAL VIEWS)......15 4. WIRING DIAGRAM ..............16 5. PART RATING ................17 6. REFRIGERATING CYCLE DIAGRAM ........34 7.
  • Page 3 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.
  • Page 4 Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.

  • Page 5: Warning Indications On The Air Conditioner Unit

    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 WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD...

  • Page 6: Precautions For Safety

    1. PRECAUTIONS FOR SAFETY The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions.
  • Page 7 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 front panel of the indoor unit or service panel of the outdoor unit, set the circuit breaker to the OFF position.
  • Page 8 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 no-one will approach the Do not bring a work location before proceeding with the work.
  • Page 9 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.
  • Page 10 Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
  • Page 11 MML-AP0154NH1-TR MML-AP0184NH1-E MML-AP0184NH1-TR * Under 70 dBA Declaration of Conformity Manufacturer: TOSHIBA CARRIER (THAILAND) CO., LTD. 144/9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambon Banhkadi, Amphur Muang, Pathumthani 12000, Thailand Authorized Representative/ Nick Ball TCF holder: Toshiba EMEA Engineering Director Toshiba Carrier UK LTD.
  • Page 12 • New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
  • Page 13 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 14: Specifications

    2. SPECIFICATIONS 2-1. Indoor Unit ５０Ｈｚ Model name MML- AP0074NH1 AP0094NH1 AP0124NH1 AP0154NH1 AP0184NH1 Cooling / Heating capacity (Note 1) (kW) 2.2/2.5 2.8/3.2 3.6/4.0 4.5/5.0 5.6/6.3 Pewer Spply 1 Phase 50Hz 230V (220-240V) (Separate power supply for indoor units is required.) Running current 0.20 0.20...
  • Page 15 ６０Ｈｚ Model name MML- AP0074NH1 AP0094NH1 AP0124NH1 AP0154NH1 AP0184NH1 Cooling / Heating capacity (Note 1) (kW) 2.2/2.5 2.8/3.2 3.6/4.0 4.5/5.0 5.6/6.3 Pewer Spply 1 Phase 60Hz 220V (Separate power supply for indoor units is required.) Running current 0.17 0.17 0.19 0.25 0.36 Electrical...

  • Page 16: Construction Views (External Views)

    3. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Indoor Unit MML-AP0074NH1-E, -TR MML-AP0094NH1-E, -TR Connecting pipe Dia. 80mm MML-AP0124NH1-E, -TR AP0074 to AP0154 to MML- MML-AP0154NH1-E, -TR AP0124 type AP0184 type MML-AP0184NH1-E, -TR Liquid side dia. 6.35 dia. 6.35 Gas side dia. 9.52 dia.

  • Page 17: Wiring Diagram

    4. WIRING DIAGRAM Model: MML-AP0074NH1-E, -TR, MML-AP0094NH1-E, -TR, MML-AP0124NH1-E, -TR MML-AP0154NH1-E, -TR, MML-AP0184NH1-E, -TR Stepping motor OUTDOOR UNIT (Vertical air flow louver) U2 U1 CN22 TB02 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

  • Page 18: Part Rating

    5. PARTS RATING 5-1. Parts Rating Parts Name Type Specications ICF-340-41-1 Fan motor (for indoor) Output (Rated) 41W, 340V DC Louver motor MP24Z3N Output (Rated) 1W, 16 poles DC Damper motor MP24Z3N Output (Rated) 1W, 16 poles DC Thermo. Sensor (TA sensor) 268mm 10kΩ...
  • Page 19 5-3. Parts Name of Remote Controller n Display section In the display example, all indicators are displayed for the explanation. Display In reality only, the selected contents are indicated. section • When turning on the main power switch and leak breaker at the first time, flashes on the display part of the remote controller.
  • Page 20 9 20 19 Air volume select display Unit Number display The selected air volume mode is displayed. Unit number of the indoor unit selected with the unit select button or abnormal indication (AUTO) (HIGH) of the indoor/outdoor unit. (MED.) (LOW) Central control display Louver Number display Displayed when the air conditioner is used...
  • Page 21 n Operation section Push each button to select a desired operation. • The details of the operation needs to be set up once, afterward, the air conditioner can be used by ON / OFF pushing button only. TEMP. ON / OFF TIMER SET MODE TIME...
  • Page 22 5-4. Correct Usage • When you use the air conditioner for the first time or when you change the SET DATA value, follow the procedure below. ON / OFF From the next time, the operation displayed on the remote controller will start by pushing the button only.
  • Page 23 [In case of cooling] • Start the cooling operation after approx. 1 minute. [In case of heating (For Heat-pump model only)] • The heating operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes. •...
  • Page 24 TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Unit select button n How to set up the wind direction n How to stop swinging SWING/FIX SWING/FIX Push during operation. Push at a desired position while the louver is swinging.
  • Page 25 Adjusting airfl ow direction To automatically swing the airfl ow direction Perform this function when the air conditioner is in • Adjust the airfl ow direction properly. Otherwise, it operation. might cause discomfort and make the room temperature uneven. • Adjust the vertical airfl ow using the remote controller. •...
  • Page 26 Adjust the horizontal airfl ow Preparation • Take hold of the lever on the horizontal airfl ow louver and move them to adjust the airfl ow direction as required. • You can adjust the airfl ow at the left, and right locations of the louver.
  • Page 27 5-6. Timer Operation • A type of timer operation can be selected from the following three types. (Setting of up to 168 hours is enabled.) OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed.
  • Page 28 5-7. Installation Installation place CAUTION • Check that the air conditioner is not installed in a place subject to combustible gas leak. Accumulation of combustible gas around the unit may cause a fire. • Drain the dehumidified water from the indoor unit and outdoor unit to a well-drained place. •...
  • Page 29 5-8. Maintenance WARNING Be sure to turn off the main power switch prior to the maintenance. • Please do not intend to do the daily maintenance and/or Air Filter cleaning by yourself. 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 30 NOTE • For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner. When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended. Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if necessary.
  • Page 31 Cleaning the air fi lter Cleaning the air inlet grille Clean the air fi lters every 2 weeks. 1. Remove the air inlet grille by release the rope from the If the air fi lters are covered with dust, the performance of hook.
  • Page 32 5-9. Air Conditioner Operations and Performance Check before operation WARNING • Check whether earth wire is disconnected or out of place. • Check that air filter is installed to the indoor unit. Turn on the power switch 12 hours or more •...
  • Page 33 5-10. When the Following Symptoms are Found Check the points described below before asking repair servicing. Symptom Cause Outdoor unit • White misty cold air or • Fan of the outdoor unit stops automatically and performs defrost water is out. operation.
  • Page 34 Confirmation and check When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of the remote controller. 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 35: Refrigerating Cycle Diagram

    6. REFRIGERATING CYCLE DIAGRAM Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Distributor Sensor (TCJ) Sensor Sensor (TC2) (TC1) Sensor Fan motor (TA) Functional part name Functional outline Pulse Motor Valve (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation 2) Controls under cool in heating operation...

  • Page 36: Control Outline

    7. CONTROL OUTLINE 7-1. Control Specifications Item Outline of specifications Remarks When power 1) Distinction of outdoor unit supply is reset When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2) If resetting the power supply during occurrence of a trouble, the check code is once cleared.
  • Page 37 Item Outline of specifications Remarks Air speed selection 1) Operation with (HH), (H), (L) or [AUTO] mode is HH > H+ > H > L+ > L > UL carried out by the command from the remote controller. For the wireless remote controller type, (HH), (H+), (H), (L+), (L) or [AUTO] operation is carried out.
  • Page 38 Item Outline of specifications Remarks Recovery control for The indoor unit which is under STOP/Thermo-OFF • Recovery operation is cooling oil status or which operates in [FAN] mode performs the usually performed every (Refrigerant) following controls when it received the cooling oil 2 hours.
  • Page 39 Item Outline of specifications Remarks Display of <OPERATION READY> Displayed on the remote controller • < > display OPERATION 1) When the following check codes are indicated No display for wireless READY] remote controller • Open phase of power supply wiring [P05] was detected. PRE-HEAT] •...
  • Page 40 Item Outline of specifications Remarks Louver control 1) Louver position setup (Wired type) • The louver position can be set up in the following operation range. In cooling/dry operation In heating/fan operation • In group operation, the louver positions can be set up collectively or individually.
  • Page 41 Item Outline of specifications Remarks COMFORT When you push the COMFORT SLEEP button during cooling, • [ ] display SLEEP operation heating or A operation, the air conditioner will start the following (Wireless remote operation. controller specific The fan speed display will indicate AUTO and low speed will be used. operations) •...
  • Page 42 Item Outline of specifications Remarks QUIET operation When you push the QUIET button during cooling, • [ ] display (Wireless remote heating, fan only or A operation, the air conditioner will controller specific start the following operation. operation) • The fan speed display will indicate AUTO and low speed will be used.

  • Page 43: Configuration Of Control Circuit

    8. CONFIGURATION OF CONTROL CIRCUIT 8-1. Indoor Controller Block Diagram 8-1-1. Case of Main (Sub) Remote Controller Connected Main (Sub) master remote controller Weekly timer (Up to 2 sets) Display part Display part Function setup driver Key switch Function setup Display part DC5V Key switch...
  • Page 44 8-1-2. Case of Wireless Remote Controller Kit Connected Indoor unit Main P.C. board (MCC-1510) DC20V Remote controller communication circuit Central control Central control EEPROM remote controller communication circuit (Option) *1 Sensor display TA sensor P.C. board DC5V (MCC-5044) TC sensor Same Same Sensor...
  • Page 45 n 8-2. Indoor P.C. Board MCC-1510 TCJ sensor Microcomputer operation LED CN102, DC 5V TC2 sensor EEPROM Inter-unit wire CN101, DC 5V IC10 CN67, AC 200V TC1 sensor CN100, DC 5V HA (T10) CN61, DC 12V Option power supply CN309, AC 200V Damper CN60, DC 12V CN71, DC 5V...
  • Page 46 8-2-1.Console-Type P.C. Board Optional Switch/Connector Specifications Connector Function Specifications Remarks Terminator resistor OFF: No terminator resistor, Setup at shipment OFF: No terminator resistor. Bit 1 provided/Not provided ON: Terminator resistor provided Only 1 unit is ON during central control by custom only. SW01 OFF: Remote controller A Remote controller A/B...
  • Page 47 8-3. Functions at test run n Cooling/Heating test run check The test run for cooling/heating can be performed from either indoor remote controller or outdoor interface P .C. board. 1. Start/Finish operation of test run ¤ Test run from indoor remote controller Wired remote controller: Refer to the below item of “Test run”...
  • Page 48 u In case of wireless remote controller In case of wireless remote controller (Forced test operation is performed in a different way.) REQUIREMENT • For the operation procedure, be sure to follow the Owner’s Manual. • Finish the forced cooling operation in a short time because it applies excessive strength to the air conditioner. •...

  • Page 49: Applied Control

    9. APPLIED CONTROL 9-1. Indoor Unit 9-1-1. Setup of Selecting Function in Indoor Unit (Be Sure to Execute Setup by a Wired Remote Controller) <Procedure> Execute the setup operation while the unit stops. TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT...
  • Page 50 Table: Function selecting item numbers (DN) (Items necessary to perform the applied control at the local site are described.) Item Description At shipment Filter display delay timer 0000 : None 0001 : 150H 0001 : 150H 0002 : 2500H 0003 : 5000H 0004 : 10000H Dirty state of filter 0000 : Standard...
  • Page 51 TYPE Indoor unit capacity Item code [10] Item code [11] Setup data Type Abbreviated Model name Setup data Model 0018 Console MML-AP XXX 4NH1 0001 0003 0005 0007 0009 9-1-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E2) [Wiring and setup] •...
  • Page 52 n 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. •...
  • Page 53 n 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 item code 2E is set to the connected indoor unit.
  • Page 54 n Address setup (Manual setting from Wired remote controller) In case that addresses of the indoor units will be determined prior to piping work after wiring work (Example of 2-lines cabling) (Real line: Cabling, Broken line: Refrigerant pipe) • Set an indoor unit per a remote controller. Outdoor Outdoor •...
  • Page 55 n Confirmation of indoor unit No. position 1. To know the indoor unit addresses though position of the indoor unit is recognized • In case of individual operation (Wired remote controller : indoor unit = 1 : 1) (Follow to the procedure during operation) <Procedure>...
  • Page 56 n Function selection setup <Procedure> Perform setting while the air conditioner stops. TEST Push buttons simultaneously for 4 seconds or more. The first displayed unit No. is the master indoor unit address in the group control. In this time, fan and louver of the selected indoor unit operate. ò...
  • Page 57 n How to check all the unit No. from an arbitrary wired remote controller <Procedure> Carry out this procedure during stop of system. The indoor unit No. and the position in the identical refrigerant piping can be checked. An outdoor unit is selected, the identical refrigerant piping and the indoor unit No. are displayed one after the other, and then its fan and louver are on.
  • Page 58 n How to change all indoor addresses from an arbitrary wired remote controller (It is possible when setting has finished by automatic addresses.) Contents: The indoor unit addresses in each identical refrigerant piping line can be changed from an arbitrary wired remote controller. ¤...
  • Page 59 n Function to clear error 1. Clearing method from remote controller ¤ How to clear error of outdoor unit In the unit of refrigerant line connected by indoor unit of the remote controller to be operated, the error of the outdoor unit currently detected is cleared. (Error of the indoor unit is not cleared.) The service monitor function of the remote controller is utilized.
  • Page 60 n Monitoring function of remote controller switch When using the remote controller (Model Name: RBC-AMT32E), the following monitoring function can be utilized. Calling of display <Contents> The temperature of each sensor of the remote controller, indoor unit and outdoor unit and the operating status can be checked by calling the service monitor mode from the remote controller.

  • Page 61: Troubleshooting

    10. TROUBLESHOOTING 10-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models  S-MMS Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MMY-MAPXXXXT8X, MMY-MAPXXXHT7X ‚ Super Heat Recovery Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MMY-MAPXXXFT8X ƒ...
  • Page 62 10-2. How to check On the remote controller (Remote controller, Central control remote controller) and on the interface P.C. board of the outdoor unit, LCD display part (Remote controller) or 7-segment display part (on outdoor interface P.C. board) is provided in order to display the operation status. 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.
  • Page 63 [Remote controller detects error.] (∗) ¡: Goes on, ¥: Flashes, l: 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. Check code display Sensor lamp display Outdoor 7-segment Block display (∗)
  • Page 64 Check code display list (Outdoor unit) (∗) ¡: Goes on, ¥: Flashes, l: 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. [SMMS-i interface detects error: Main example] Check code display Sensor lamp display...
  • Page 65 (∗) ¡: Goes on, ¥: Flashes, l: 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. Check code display Sensor lamp display Outdoor 7-segment Block display Main defective position...
  • Page 66 (∗) ¡: Goes on, ¥: Flashes, l: 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. Check code display Sensor lamp display Outdoor 7-segment Block display Main defective position...
  • Page 67 Check code display list (Outdoor unit) (∗) ¡: Goes on, ¥: Flashes, l: 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. [SMMS-i unit IPDU detects error: Main example] Check code display Sensor lamp display...
  • Page 68 10-3. Troubleshooting by Check Display on Remote Controller n In case of wired remote controller (RBC-AMT32E) 1. Confirmation and check When an error occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller.
  • Page 69 n In case of central remote controller (TCB-SC642TLE2) 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 unit No. are displayed on the display section of the remote controller.
  • Page 70 n Indoor unit display part (Receiving unit) (Wireless type) When specifying the check code, check 7-segment display on the center unit. For the check code which is not displayed on the outdoor 7-segment, confirm it in Section “10-2 How to Check / Check code display list (Indoor unit)”. : Goes off, : Goes on, : Flash (0.5 second)
  • Page 71 Lamp indication Check code Cause of trouble occurrence Operation Timer Ready Heat exchanger sensor (TCJ) error ⎫ ⎪ Heat exchanger sensor (TC2) error ⎪ ⎪ Heat exchanger sensor (TC1) error Temp. sensor error in indoor unit ⎬ ⎪ Alternate flash Room temp.
  • Page 72 n Others (Except check code) Lamp indication Check code Cause of trouble occurrence Operation Timer Ready — During test run Simultaneous flash Operation Timer Ready COOL/HEAT disagreement — (Automatic cooling/heating setup to automatic cooling/heating unavailable model, heating setup to cooling only model) Alternate flash...
  • Page 73 10-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit (7-Segment Display of Interface) <In case of SUPER MODULAR MULTI SYSTEM> Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code...
  • Page 74 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller — No corresponding All stop Indoor unit is not found when indoor • Check the communication line connection between indoor and outdoor. indoor unit during automatic address start was set up.
  • Page 75 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller IPDU communication error All stop Communication of each IPDU • Check connection of communication connector and A-3-IPDU A-3-IPDU (P .C.
  • Page 76 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller — Outdoor temp sensor All stop During operation of compressor in HEAT • Check installation of TE1 sensor and TL sensor. miscabling (TE1, TL) mode, the TE1 detection temp was higher •...
  • Page 77 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller — Compressor 1 case All stop Compressor 1 case thermostat performed • Check compressor 1 case thermo circuit. (Connector, cable, P .C. board) thermo operation protective operation.
  • Page 78 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller — Outdoor unit discharge All stop While compressor 2 is operating, • Check mounting of TD2 sensor. temp.
  • Page 79 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote controller Check code Auxiliary code — — Duplicated indoor units with priority All stop Indoor units with priority were • Check display of indoor unit with priority. (Displayed on indoor unit with priority) duplicated.
  • Page 80 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller — — Indoor Indoor fan motor error Corresponding • Check the lock of fan motor (AC fan). unit only stops.
  • Page 81 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote controller Check code Auxiliary code — Outdoor liquid back All stop <In cooling> • Check full close operation of outdoor PMV (1, 2, 4). detection error While the system operated in cooling mode, high ststus •...
  • Page 82 Check code Detected Wired Outdoor 7-segment display Check code name Status Error detection condition Check item (position) position remote Check code Auxiliary code controller 0∗: IGBT circuit IPDU Outdoor fan IPDU error All stop (Auxiliary code: 08) • Fan motor check 1∗: Output circuit error between Fan IPDU position detection circuit •...
  • Page 83 Error detected by TCC-LINK central control device Check code Display on Outdoor 7-segment display Detected position Check code name Status Error detection condition Check item (position) central control Check code Auxiliary code device — TCC-LINK TCC-LINK central control device Operation Signal is not transmit from •...
  • Page 84 10-4-1. Cautions When Servicing for Compressor 1. Removing wires of both compressors check output of the inverter as described below. 10-4-2. How to Check Inverter Output 1. Turn off the power supply. 2. Remove the compressor lead cables from the compressors. (Be sure to remove lead cables of both compressors.) 3.
  • Page 85 10-5. Sensor characteristics n Temperature sensor characteristics Characteristic-1 Indoor TA sensor Temperature [ C] Characteristic-2 Indoor TC1, TC2, TCJ sensors 90 100 Temperature [ C]...

  • Page 86: Ownner's Manual

    Toshiba Carrier Corporation or, alternatively, he or she has been PARTS NAME ............7 instructed in such matters by an individual or individuals who have been trained and is thus PARTS NAME OF REMOTE CONTROLLER .
  • Page 87 Warning Indications on the Air Conditioner Unit PRECAUTIONS FOR SAFETY Warning indication Description The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. WARNING WARNING WARNING General ELECTRICAL SHOCK HAZARD • Carefully read Owner’s Manual before starting the air conditioner. There are many important things to keep in mind Disconnect all remote electric ELECTRICAL SHOCK HAZARD for daily operation.
  • Page 88 Information on the Transportation, Handling and Storage of the CAUTION Carton CAUTIONS ABOUT INSTALLATION Examples of indication on the carton • Certainly lay the drain hose for perfect draining. Wrong drainage may cause fl ooding in the house and getting furniture wet. •...
  • Page 89 Names and functions of indicators and CAUTION ACCESSORIES controls on indoor unit • Disagreement in operation mode Remote controller Remote controller holder Batteries (two) If you select AUTOMATIC OPERATION in a model Display panel with no auto-changeover (cooling/heating) control setting or if you select HEAT in a Cool Only model, an alarm sound (pi, pi) from the air conditioner due to disagreement in operation mode.
  • Page 90 Names and functions of indications on (COMFORT SLEEP) display PARTS NAME OF REMOTE CONTROLLER wireless remote controller Indicated during the OFF timer operation that automatically adjusts the room temperature and Wireless remote controller and its You can also manually select the desired fan speed the fan speed.
  • Page 91 Clock adjusting ADJUSTING CLOCK LIMITED OPERATION BY GROUP CONTROL Setting the clock NOTE Before you start operating the air conditioner, set the Group control: Operate air conditioners in more than one system in same time. clock of the remote controller using the procedures given Header indoor unit: The representative unit during group control.
  • Page 92 Dry operation Automatic operation (auto changeover) HANDLING THE REMOTE CONTROLLER This function is available only for use in combination with Start Remote controller holder a heat recovery model outdoor unit. If this function is CAUTION used with another model of outdoor unit, “A” (Auto) appears on the remote controller but the automatic Installing the remote controller holder •...
  • Page 93 Timer operation Once you select the timer operation mode, the settings Every day combined timer (setting both ON CAUTION are saved in the remote controller. and OFF timer simultaneously and activate Use the wired remote controller for timer setting if it is Thereafter, the air conditioner will start operating under every day.) also in use.
  • Page 94 Preset Operation Adjusting airfl ow direction To automatically swing the airfl ow direction CAUTION Perform this function when the air conditioner is in Set your preferred operation mode for future use. • Adjust the airfl ow direction properly. Otherwise, it operation.
  • Page 95 Adjust the horizontal airfl ow TEMPORARY OPERATION Preparation TEMPORARY operation • Take hold of the lever on the horizontal airfl ow louver and move them to adjust the airfl ow direction as This function is used to operate the unit temporarily in case you misplace the wireless remote controller or its batteries are exhausted.
  • Page 96 Filter holder MML-AP0184NH1-TR * Under 70 dBA Declaration of Conformity TOSHIBA CARRIER (THAILAND) CO., LTD. Manufacturer: 144/9 Moo 5, Bangkadi Industrial Park, Tivanon Road,Tambon Bangkadi, Amphur Muang, Pathumthani 12000, Thailand 3. Wipe out water from air inlet grille and dry it.

  • Page 97: Installation Manual

    • The qualifi ed 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 6 PIPING AND DRAIN HOSE INSTALLATION ........11...
  • Page 98 Defi nition of protective gear PRECAUTIONS FOR SAFETY PRECAUTIONS FOR SAFETY 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 The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
  • Page 99 Electrical wiring CAUTION • Only a qualifi ed installer(*1) or qualifi ed 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 unqualifi ed individual since failure to carry out New refrigerant air conditioner installation the work properly may result in electric shocks and/or electrical leaks.
  • Page 100 <Others> Installation diagram of indoor and outdoor units Name Owner’s manual Do not allow the drain hose to get slack. Installation plate Installation manual Cut the piping hole sloped slightly. SELECTION OF INSTALLATION PLACE SELECTION OF INSTALLATION PLACE 300 mm or more 300 mm or more Make sure to run the drain hose sloped downward.
  • Page 101 Remote control CUTTING A HOLE AND MOUNTING INSTALLATION CUTTING A HOLE AND MOUNTING INSTALLATION • A place where there are no obstacles such as a curtain that may block the signal from the remote control. PLATE PLATE • Do not install the remote control in a place exposed to direct sunlight or close to a heating source such as a stove. •...
  • Page 102 Mounting directly on the fl oor Concealed installation PIPING AND DRAIN HOSE INSTALLATION PIPING AND DRAIN HOSE INSTALLATION 1) Fix the leg of indoor unit on the fl oor with 2 mounting 1. Wall hole size Drainage screws. Wall hole size should be enough to keep the distance How to install indoor unit 2) Fix the upper part of indoor unit on the wall with 4 with indoor unit as shown in the following fi...
  • Page 103 REQUIREMENT REFRIGERANT PIPING REFRIGERANT PIPING ELECTRIC WORK ELECTRIC WORK Tightening with an excessive torque may crack the nut Projection margin in fl aring: B (Unit: mm) Refrigerant piping depending on installation conditions. WARNING Rigid (Clutch type) Tighten the nut within the specifi ed tightening torque. 1.
  • Page 104 Power supply wire and communication wires specifi cations Control wiring between indoor and outdoor units Power supply wire and communication wires are procured locally. NOTE For the power supply specifi cations, follow the table below. Power supply wiring and communication wiring are to be procured locally.
  • Page 105 2) How to connect the control wiring Wiring connection 1. Take the control wire out of the cable slot on the rear panel so that it produces about 600 mm form the front. 2. Remove the terminal cover (UP) How to connect the power supply wiring and control wiring 3.
  • Page 106 Wiring connection for fl ow selector unit APPLICABLE CONTROLS APPLICABLE CONTROLS How to connect the wiring of fl ow selector unit A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote Connect the power supply wire and the communication wire supplied with the fl ow selector unit to the indoor unit. controller.
  • Page 107 To secure better effect of heating Procedure TEST RUN TEST RUN Using “TEMP.” buttons, specify CODE No. When it is diffi cult to obtain satisfactory heating due to A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote installation place of the indoor unit or structure of the controller.
  • Page 108 In case of wireless remote controller (Forced test operation is performed in a different way.) TROUBLE SHOOTING TROUBLE SHOOTING REQUIREMENT A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote • For the operation procedure, be sure to follow the Owner’s Manual. controller.
  • Page 109 Check method Sending error in communication — between outdoor units On the remote controller (Wired remote controller, Central control remote controller) and the interface P.C. board of — Duplicated follower outdoor addresses the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. No.
  • Page 110 (L20 is displayed.) Duplicated central control addresses Phase missing detection/Power failure detection 01: Comp. 1 side TCC-LINK: TOSHIBA Carrier Communication Link. Inverter DC voltage error (comp.) 02: Comp. 2 side Inverter DC voltage error (comp.) 03: Comp. 3 side Inverter DC voltage error (comp.) 01: Comp.
  • Page 111 CONFIRMATION OF INDOOR UNIT SETUP Prior to delivery to the customer, check the address and setup of the indoor unit, which has been installed in this time WARNINGS ON REFRIGERANT LEAKAGE and fi ll the check sheet (Table below). Data of four units can be entered in this check sheet. Copy this sheet according to the No.

  • Page 112: Board Exchange Procedures

    13. P.C. BOARD EXCHANGE PROCEDURES Model type P.C. board model Label display on P.C. board WP-025 MML-AP 4NH1 series MCC-1510 [Requirement when replacing the service indoor P.C. board assembly] In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P .C. board before replacement, the type and capacity code exclusive to the corresponding model have been stored at shipment from the factory and the important setup data such as refrigerant line /indoor unit /group address in (AUTO/MANUAL) mode have been stored at installation.
  • Page 113 UNIT LOUVER 2. Every pushing [Unit, Louver ] button, the indoor unit address in the group are displayed successively. Specify the indoor unit No. to be replaced. 3. Using the set temperature buttons, the CODE No. (DN) can be moved up and down one by one. 4.
  • Page 114 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 ∗...
  • Page 115 H3 3 Writing of the setup contents to EEPROM (The contents of EEPROM installed on the service P .C. board have been set up at shipment from the factory.) TEST 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 116 CODE No. table (Please record the objective unit data at field) Item Memo At shipment Filter sign lighting time 0001: 150 hour Dirty state of filter 0000: Standard Central control address 0099: Unfixed Heating suction temp shift 0000: No shift PRE-DEF indication selection 0000: Standard Cooling auto mode existence...

  • Page 117: Detachments

    14. DETACHMENTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the main power supply switch or breakers are not turned off. • After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.
  • Page 118 WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. • After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.
  • Page 119 Part name Procedure Remarks Electrical parts 1) Remove screw for Terminal cover (UP). ② 1) Screw for Terminal cover (UP) Box assembly 2) Remove screw for LED base. Terminal cover (UP) (E-box) NOTE Take off control wire and wired remote controller wire before it removes E-box cover.
  • Page 120 Part name Procedure Remarks Electrical parts 8) Remove screw for pipe cover (U). (3 pcs) ② Box assembly 9) Remove screw for pipe cover (D). (E-box) 10) Remove screw for display base. 10) Screw for display base(2pcs) 11) Remove screw for earth-lead. (2 pcs) 12) Pull off the TC1, TC2, TCJ sensor.
  • Page 121 Part name Procedure Remarks Electrical parts 13) Take off PMV motor connector. ② Box assembly 14) Take off louver motor conector. (E-box) 15) Take off fan motor conector. 16) Remove screw for E-box 17) - ① Pull the upper part of the E-box. 18) - ②...
  • Page 122 Part name Procedure Remarks Electrical parts <How to remove P.C. board ASSY> ② Box assembly 19) Remove protection tube for lead from (E-box) cord clamp. (2pcs) 20) Remove screw to fix sub base to E-box. NOTE Remove protection tube from cord clamp before it pulls out E-box.
  • Page 123 Part name Procedure Remarks <Cautions at work> PMV motor Using spanners by 14mm,17mm and 19mm, remove the PMV motor. To avoid deformation of the pipes, do not use a monkey wrench. 1) Perform work of item 2) Perform work of item 3) Remove the bundling band of PMV motor lead wire.
  • Page 124 Part name Procedure Remarks Louver base 1) Remove screws for louver base. Screws for louver base (2 pcs) assembly (2 pcs) 2) - ① Pull the upper part of the louver base to upward. ② ① 2) - ② Take off the louver base by pull out in the front direction.
  • Page 125 Part name Procedure Remarks Turbo fan 1) Turn the flange nut (M10) in the counter-clockwise direction and take it off. 2) Pull out the turbo fan from the fan motor shaft. <Attention for turbo fan assemble> The tightening torque of the flange nut is 5N·m.
  • Page 126 Part name Procedure Remarks Fan motor 3) Remove the flange nut and turbo fan. (refer to ⑧) 4) Remove screws for motor holder and lead cover. (refer to ⑨)
  • Page 127 Microcomputer Part name Procedure Remarks  Common procedure 1) Turn the power supply off to stop the Replace terminal block, operation of air-conditioner. microcomputer ass’y and the P .C. board ass’y. 2) Remove the front panel. • Remove the 2 fixing screws. 3) Remove the electrical part base.

  • Page 128: Exploded Views And Parts List

    15. EXPLODED VIEWS AND PARTS LIST 15-1. Indoor Unit Model: MML-AP0074NH1-E(TR),MML-AP0094NH1-E(TR),MML-AP0124NH1-E(TR), MML-AP0154NH1-E(TR),MML-AP0184NH1-E(TR) Location Part Location Part Description Description 43T00558 FRONT PANEL ASSY 43T19333 HOLDER, SENSOR 43T09460 INLET GRILLE ASSY 43T19321 FIX-P-SENSOR AIR FILTER 43T80325 43T72310 DRAIN PAN ASSY 43T03383 BACK BODY ASSY...
  • Page 129 15-2. Indoor Unit (E-Part) Model: MML-AP0074NH1-E(TR),MML-AP0094NH1-E(TR),MML-AP0124NH1-E(TR), MML-AP0154NH1-E(TR),MML-0184NH1-E(TR) Location Part Location Part Description Description 43T50317 SENSOR;HEAT EXCHANGER 43T60078 TERMIMAL BLOCK 43T50306 TEMPERATURE SENSOR 43T60079 TERMIMAL BLOCK PC BOARD ASSY 43T50308 SENSOR HEAT EXCHANGER 43T6V687 43T69320 TEMPERATURE SENSOR 43T69900 PC BOARD ASSY,WRS-LED...
  • Page 130 TOSHIBA CARRIER (THAILAND) CO., LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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