Page 1 FILE NO. SVM-21032 AIR CONDITIONER (MULTI TYPE) SERVICE MANUAL < Super Modular Multi System-u SMMS-u > Outdoor MMY-MUP0801HT8(J)P MMY-MUP0801HT7(J)P MMY-MUP1001HT8(J)P MMY-MUP1001HT7(J)P MMY-MUP1201HT8(J)P MMY-MUP1201HT7(J)P MMY-MUP1401HT8(J)P MMY-MUP1401HT7(J)P MMY-MUP14A1HT8(J)P MMY-MUP14A1HT7(J)P MMY-MUP1601HT8(J)P MMY-MUP1601HT7(J)P MMY-MUP1801HT8(J)P MMY-MUP1801HT7(J)P MMY-MUP2001HT8(J)P MMY-MUP2001HT7(J)P MMY-MUP2201HT8(J)P MMY-MUP2201HT7(J)P MMY-MUP2401HT8(J)P MMY-MUP2401HT7(J)P MMY-MUP0801HT8P-A MMY-MUP1001HT8P-A MMY-MUP1201HT8P-A MMY-MUP1401HT8P-A MMY-MUP14A1HT8P-A MMY-MUP1601HT8P-A...
Page 2 CONTENTS SAFETY CAUTION ....................... 6 REFRIGERANT (R410A).................... 13 1. WIRING DIAGRAMS ....................16 2. PARTS RATING ...................... 19 2- 1. Outdoor Unit (50Hz model: MMY-MUP***1HT8*) ............. 19 2- 2. Outdoor Unit (60Hz model: MMY-MUP***1HT7*) ............. 20 2- 3. Outdoor Unit (50Hz model: MMY-MUP***1HT8P-A) ............21 2- 4.
Page 3 7- 5. Troubleshooting in Test Operation ................. 136 7- 5-1. A Check Code is Displayed on the Remote Controller ........136 7- 5-2. No Remote Controller Response with Check Code..........137 7- 5-3. No Remote Controller Response without Check Code ........137 7- 5-4.
Page 4 11. REPLACING COMPRESSORS ................. 262 11- 1. Compressor Replacement Procedure (Outline)............262 11- 2. Replacement of Compressors ..................263 11- 3. Check Procedure to Search Cause of Compressor Oil Shortage ......267 12. OUTDOOR UNIT PARTS REPLACEMENT METHODS ........271 13.
Page 5 This service manual provides relevant explanations about new outdoor unit (SMMS-u). Please refer to the following service manuals for each indoor units. Model name SVM File No. <4-Way Cassette Type> MMU-UP***1HP-E/-TR　(Made in Thailand model) SVM-20095 A10-2004 MMU-UP***1H-E/-TR　(Made in Japan model) MMU-AP***4HP1-E/-TR　(Made in Thailand model) SVM-16041 <Compact 4-Way Cassette Type>...
Page 6 • 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...
Page 7 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 8 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.
Page 9 WARNIG 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.
Page 10 Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. Prohibition of modification. 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).
Page 11 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 Assembly / at user’s side.
Page 12 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.
Page 13 Refrigerant (R410A) This air conditioner adopts a HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to refrigerant (R410A) The pressure of R410A is 1.6 times higher than that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
Page 14 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 15 Communication type, model names and the maximum number of connectable units This air conditioning (U series) has new communication specifications, and TU2C- Link (U series) and TCC-Link (other than U series) differ in a communication type. For the communication type and the model names such as each unit or remote controllers, refer to the following table.
Page 16 1.WIRING DIAGRAMS 8, 10, 12, 14HP Model: MMY-MUP0801*, MUP1001*, MUP1201*, MUP1401* MCC-1748 MCC-1729 SW800 CN04 CN01 CN21 CN05 CN02 CN22 CN03 CN23 CN01 CN201 CN02 CN202 CN03 CN203 Mg-CTT CN103 CN851 (YEL) CN04 (WHI) CN102 1 2 3 2 3 4 5 (WHI) CN103 (WHI) 2 3 4 5 6...
Page 17 14A, 16, 18, 20HP Model: MMY-MUP14A1*, MUP1601*, MUP1801*, MUP2001* MCC-1748 MCC-1729 SW800 CN04 CN01 CN11 CN21 CN05 CN12 CN02 CN22 CN01 CN201 CN03 CN13 CN23 CN14 CN02 CN202 CN15 CN03 CN203 Mg-CTT CN103 CN24 CN851 (WHI) (YEL) CN04 CN102 1 2 3 2 3 4 5 (WHI) CN05...
Page 18 22, 24HP Model: MMY-MUP2201*, MUP2401* MCC-1729 (1) SW800 CN04 MCC-1748 CN05 CN01 CN11 CN21 CN01 CN201 CN02 CN12 CN22 CN02 CN202 CN13 CN03 CN23 CN03 CN203 CN14 Mg-CTT1 CN103 CN15 CN851 CN852 (WHI) (WHI) (YEL) 1 2 3 2 3 4 5 2 3 4 5 CN24 CN04...
Page 19 2. PARTS RATING 2-1. Outdoor Unit (50Hz model: MMY-MUP***1HT8(J)P) Name Model Specification ○ Compressor LA771A3TB-20M Output:4.0kW×1 ○ Compressor LA771A3TB-20M Output:5.8kW×1 ○ Compressor LA771A3TB-20M Output:7.3kW×1 ○ Compressor LA771A3TB-20M Output:10.0kW×1 ○ Compressor LA1201K4FB-10UC Output:8.0kW×1 ○ Compressor LA1201K4FB-10UC Output:9.7kW×1 ○ Compressor LA1201K4FB-10UC Output:11.5kW×1 ○...
Page 20 2-2. Outdoor Unit (60Hz model: MMY-MUP***1HT7(J)P) Name Model Specification ○ Compressor LA771A3TB-20M Output:4.0kW×1 ○ Compressor LA771A3TB-20M Output:5.8kW×1 ○ Compressor LA771A3TB-20M Output:7.3kW×1 ○ Compressor LA771A3TB-20M Output:10.0kW×1 ○ Compressor LA1201K4FB-10UC Output:8.0kW×1 ○ Compressor LA1201K4FB-10UC Output:9.7kW×1 ○ Compressor LA1201K4FB-10UC Output:11.5kW×1 ○ Compressor LA1201K4FB-10UC Output:13.0kW×1 ○...
Page 21 2-3. Outdoor Unit (50Hz model: MMY-MUP***1HT8P-A) Name Model Specification ○ Compressor LA771A3TB-20M Output:4.4kW×1 ○ Compressor LA771A3TB-20M Output:6.5kW×1 ○ Compressor LA771A3TB-20M Output:8.1kW×1 ○ Compressor LA771A3TB-20M Output:10.9kW×1 ○ Compressor LA1201K4FB-10UC Output:9.3kW×1 ○ Compressor LA1201K4FB-10UC Output:11.4kW×1 ○ Compressor LA1201K4FB-10UC Output:13.2kW×1 ○ Compressor LA1201K4FB-10UC Output:14.9kW×1 ○...
Page 22 2-4. Winding resistance of outdoor unit main parts Checking procedure Part name Compressor Measure and compare each winding resistance by digital tester. (Model : LA771A3TB-20M) Position Resistance value Red – White 0.242 Ω ±0.1 White – Black Black – Red (all same resistance is ok.) at 20°C Compressor Measure and compare each winding resistance by digital tester.
Page 23 2-5. Inverter Assembly Name Model Specifications Power supply terminal block JXO-6004 AC600V/75A, 4P Noise Filter P.C. board (1) MCC-1748 Noise Filter P.C. board (2) MCC-1748 Line filter 0.9mH/AC460V/50A Interface P.C. board MCC-1747 Inverter P.C. board for Compressor (1) MCC-1729 Inverter P.C. board for Compressor (2) MCC-1729 Inverter P.C.
Page 24 2-6. Parts Layout in Outdoor Unit - 24 -...
Page 25 2-7. Parts Layout in Inverter Assembly 8, 10, 12, 14HP Model: MMY-MUP0801*, MUP1001*, MUP1201*, MUP1401* The Interface P.C. board sub-assembly Remove the Interface P.C. board sub-assembly. Interface P.C. board Inverter P.C. board for fan (MCC-1747) (MCC-1734) Thermistor Magnet Contactor Noise Filter P.C. board (1) (MCC-1748) Inverter P.C.
Page 26 14A,16, 18, 20HP Model: MMY-MUP14A1*, MUP1601*, MUP1801*, MUP2001* Inverter P.C. board for fan 2 The Interface P.C. board sub-assembly (MCC-1734) Interface P.C. board Inverter P.C. board for fan 1 Remove the Interface P.C. board sub-assembly. (MCC-1734) (MCC-1747) Thermistor Magnet Contactor Noise Filter P.C.
Page 27 22, 24HP Model: MMY-MUP2201*, MUP2401* Inverter P.C. board for fan 2 The Interface P.C. board sub-assembly (MCC-1734) Interface P.C. board Remove the Interface P.C. board sub-assembly. Inverter P.C. board for fan 1 (MCC-1747) (MCC-1734) Magnet Contactor 2 Thermistor 2 Thermistor 1 Magnet Contactor 1 Noise Filter P.C.
Page 28 2-8. Outdoor (Inverter) Print Circuit Board 2-8-1. Interface P.C. board (MCC-1747) Option Input/ Output PMV1 Output CN300 PMV4 Output PMV2 Output CN303 CN301 High pressure SW PMV3 Output CN305,306 CN302 UART communication AC Power IN CN600 CN400 Detection of power supply open phase and miswiring Mg-CTT CN910...
Page 29 2-8-2. Noise Filter P.C. board (MCC-1748) 1290W 1Comp 2Fan model (K4 Compressor) 990W 1Comp 1Fan model (A3 Compressor) (14A/16/18/20HP) (8, 10, 12. 14HP) 1290W 2Comp 2Fan model (A3 Compressor) (22/24HP) Power supply Output L1 Power supply Output L1 Power supply output to Comp Power supply output to Comp CN21 CN102...
Page 30 2-8-3. Inverter P.C. board for compressor (MCC-1729) 1290W 2Comp 2Fan model (A3 Compressor) 1290W 1Comp 2Fan model (K4 Compressor) (22/24HP) (14A/16/18/20HP) 990W 1Comp 1Fan model (A3 Compressor) (8/10/12/14HP) Power supply Input L1 CN01 Power supply Input L2 8pin 4pin CN02 Reactor connecting terminal Power supply Input L3 CN04...
Page 31 2-8-4. Inverter P.C. board for fan (MCC-1734) Vdc input from COMP Vcc input CN01 Fan motor output CN100 Vcc output Vdc input from COMP CN301 CN101 CN02 190mm UART communication For inverter address setting CN802,CN803 SW800 - 31 -...
Page 32 2-8-5. USB isolate P.C. board (MCC-1754) screw USB communication to I/F USB connector CN01 CN02 - 32 -...
Page 33 3. REFRIGERANT PIPING SCHEMATIC DRAWING Outdoor unit 8, 10, 12, 14HP Model: MMY-MUP0801*, MUP1001*, MUP1201*, MUP1401* Fan motor PMV1 Main heat exchanger Sub heat exchanger PMV2 4-way valve High-pressure sensor Low-pressure sensor Accumulator High- SV3D pressure switch SV3F SV41 Subcool Heat exchanger PMV4 Liquid side...
Page 34 14A, 16, 18, 20HP Model: MMY-MUP14A1*,MUP1601*, MUP1801*, MUP2001* Fan motor Fan motor PMV1 Left side Right side Main heat exchanger Main heat exchanger Left side RIght side PMV2 Sub heat exchanger Sub heat exchanger PMV3 4-way valve Check Valve High-pressure sensor Low-pressure sensor...
Page 35 22, 24HP Model: MMY-MUP2201*, MUP2401* Fan motor Fan motor PMV1 Left side Right side Main heat exchanger Main heat exchanger Left side Right side PMV2 Sub heat exchanger Sub heat exchanger PMV3 4-way valve High-pressure sensor Low-pressure SV3D sensor Accumulator High- High- pressure...
Page 36 Functional Part Name SV3D (Connector CN324 WHI) 1) Reserves oil in the oil separator during OFF time. 2) Returns oil reserved in the oil separator to the compressor during ON time. SV3F (Connector CN324: WHI) 1) Supplies oil in the accumulator to the compressor 2) Shuts off the liquid refrigerant from the accumulator when the compressor dilution SV41 (SV41 •...
Page 37 Indoor unit Liquid side Gas side Cooling Heating Strainer Capillary tube Heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) U series Indoor Unit Functional Part Explanation Functional part name Functional outline Pulse Motor Valve (Connector CN082 (6P): Blue)
Page 38 4. COMBINED REFRIGERANT PIPING SYSTEM SCHEMATIC DIAGRAMS 4-1. Refrigerant Flow (Cooling) Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Fan motor Fan motor Fan motor PMV1 PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger...
Page 39 4-2. Refrigerant Flow (Single Defrost) Outdoor Unit (MMY-MUP2401*) Fan motor Fan motor PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Left side Left side...
Page 40 4-3. Refrigerant Flow (Heating) Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Fan motor Fan motor Fan motor PMV1 PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger...
Page 41 4-4. Refrigerant Flow (Individual Defrost) Header Unit (MMY-MUP2401*) Defrost Unit Follower Unit (MMY-MUP1401*) Heating Unit Fan motor Fan motor Fan motor PMV1 PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger...
Page 42 4-5-1. (1) Refrigerant Flow (Automatic emergency cooling) Set Up as Temporary Header Unit during Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Trouble Emergency Operation Fan motor Fan motor PMV1 Fan motor PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger...
Page 43 (2) Refrigerant Flow (Manual emergency cooling) Set Up as Temporary Header Unit during Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Trouble Emergency Operation Fan motor Fan motor PMV1 Fan motor PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger...
Page 44 4-5-2. (1) Refrigerant Flow (Automatic emergency heating) Set Up as Temporary Header Unit during Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Trouble Emergency Operation Fan motor Fan motor PMV1 Fan motor PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger...
Page 45 (2) Refrigerant Flow (Manual emergency heating) Set Up as Temporary Header Unit during Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Trouble Emergency Operation Fan motor Fan motor PMV1 Fan motor PMV1 Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger...
Page 46 4-6. Refrigerant Flow (Reclaim) Header Unit (MMY-MUP2401*) Follower Unit (MMY-MUP1401*) Trouble FAN On Fan motor Fan motor PMV1 Fan motor PMV1 Open Left side Left side Left side Right side Right side Right side Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger...
Page 47 5. CONTROL OUTLINE 5-1. Outdoor Unit Item Description of operation, numerical data, and other information Remarks 1. Pulse 1. PMV1, 2, 3 control (PMV 1 and 2, 3) motor valve 1) During air conditioner operation, the pulse count of a PMV1 (pulse motor valve 1) is (PMV) controlled between 75 pls and 3000 pls, During air conditioner operation, the pulse control...
Page 48 Item Description of operation, numerical data, and other information Remarks 2. Outdoor 1. Cooling fan control fan control 1) Outdoor fan speed (mode) is controlled on the basis of measurements provided by the Pd sensor. 2) For a specified period after the start of cooling operation, the header outdoor unit controls outdoor fan speed (mode) on the basis of measurements provided by the Pd sensor.
Page 49 Item Description of operation, numerical data, and other information Remarks 3. Capacity 1) The compressors of the header and follower units are controlled on the basis of • The outdoor rotation control capacity demand issued by indoor controllers. control may be performed 2) The two compressors featured in an outdoor unit operate on a rotational basis, so even when the insufficient that, every time they come to stop, their order of startup changes.
Page 50 Item Description of operation, numerical data, and other information Remarks 5. Oil This is a control for preventing oil shortage in the compressor between the outdoor units, recovery and oil equalization control is performed as follows during cooling operation and heating control operation.
Page 51 Item Description of operation, numerical data, and other information Remarks 7. Defrosting • The reverse defrosting method is used for the outdoor unit in a single system, and the control individual reverse defrosting method is used for the outdoor units in a connected system. (Reverse •...
Page 52 Item Description of operation, numerical data, and other information Remarks 8. Release (1) SV4 gas balance control valve control This control turns on SV4 when the compressor is stopped to balance the gas and reduce the starting load when the compressor is turned on next time. This control is performed independently by the center unit and each terminal unit.
Page 53 Item Description of operation, numerical data, and other information Remarks 9. Capacity This control is a capacity release control that is performed for the purpose of suppressing release the thermostat-OFF due to freezing prevention due to excessive capacity even in Min Hz control during cooling small capacity operation.
Page 54 Item Description of operation, numerical data, and other information Remarks (1) Current, power release value control 12. Inverter P.C.board The purpose of this control is to prevent high pressure rise and overheating of electric parts by reducing the compressor speed when the maximum current and maximum control for compressor power value set for each model are exceeded.
Page 55 Item Description of operation, numerical data, and other information Remarks 13. Heat Since the refrigerant cooling heat sink cools the device by the refrigerant temperature of sink the liquid pipe, if the liquid pipe temperature drops due to a gas shortage cycle, dew condensation condensation on the device may occur.
Page 56 5-2. Indoor Unit 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) Setting of indoor fan speed and existence of air direction adjustment Based on EEPROM data, select setting of the indoor fan speed and the existence of air direction adjustment.
Page 57 Item Outline of specifications Remarks Return air temperature 2) By setting the CODE No. 06, the setup temperature Room temp. shift of heating operation in heating operation can be compensated. control (Continued) Setup data Except while sensor of Setup temp. compensation +0˚C +2˚C +4˚C...
Page 58 Item Outline of specifications Remarks Air speed 1) By the command from remote control, fan speed is HH > H+ > H > L+ > L > UL selection changed. ((HH), (H+), (H), (L+), (L) or [AUTO]) Fan speed 2) When the air speed mode [AUTO] is selected, the air 4-way cassette speed varies by the difference between TA and Ts.
Page 59 Item Outline of specifications Remarks Setting of height ceiling Air speed selection mode at CODE No. [5D] or (Continued): at SW501 on P.C.board. 4-way, compact 4-way (only UP015), 2-way, 1-way (SH) (Air speed selection of UP012 or less and UP018 for Compact 4-way are only Standard.) Factory default Type 1 Type 3...
Page 60 Item Outline of specifications Remarks 1. In heating operation, the lowest temperature between Prevention of cold TCJ: Temperature of indoor TC1 sensor and the highest temperature between air discharge heat exchanger sensor TC2 and TCJ sensor is set as the upper bound of the •...
Page 61 Item Outline of specifications Remarks Refrigerant (Oil) The indoor unit which is under STOP/Thermostat- • Recovery operation normally recovery control in OFF status or which operates in [FAN] mode takes place when it detect that cooling operation performs the following controls when it received the the refrigerant is less.
Page 62 Item Outline of specifications Remarks Display of filter 1) The filter sign is displayed with LC by sending the filter- FILTER] goes on. sign [ reset signal to the remote controller when the specified The filter sign is not (Not provided to time (150H/2500H) elapsed as a result of integration of the displayed in the wireless...
Page 63 Item Outline of specifications Remarks Subject model : Louver control 1) Louver position setup 4-way cassette • When the louver position is changed, the position moves Compact 4-way necessarily to downward discharge position once to return to 2-way cassette the set position. 1-way cassette (SH) •...
Page 64 Item Outline of specifications Remarks Louver control <<Individual air direction setup>> Subject model : (Continued) UNIT LOUVER 4-way cassette • Pushing Louver select button enables every discharge Compact 4-way port to set up the air direction. The louver numbers that are displayed on the display part Setup from the remote correspond to those in the following figure.
Page 65 Item Outline of specifications Remarks Louver control <<Selection of Swing mode>> Subject model : 4-way cassette (Continued) • For the Swing mode, the following three types of modes Compact 4-way are selectable and settable by keeping Swing/Direction SWING/FIX button pushed for 4 seconds or more on the remote controller.
Page 66 Item Outline of specifications Remarks Louver control • If there is the locked louver in the unit, [ ] goes on the For the setting operation, refer to [How to set louver remote controller screen. (Continued) lock] of Installation Manual. •...
Page 67 6. APPLIED CONTROL AND FUNCTIONS 6-1. Optional connector Specifications of Indoor P.C.Board - 67 -...
Page 68 - 68 -...
Page 69 6-2. 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 individually without connecting to the remote controller or the outdoor unit. This function can be used regardless of the ON/OFF operation. However, it is recommend to avoid using this function for along time, otherwise the trouble of the equipment may occurred.
Page 70 6-3. Method to Set Indoor Unit Function DN Code (When performing this task, be sure to use a wired remote controller.) Procedure Be sure to stop the air conditioner before making settings <RBC-AMT*> Push the buttons simultaneously and hold for at least 4 seconds.
Page 71 <RBC-ASCU11*> 2,4,5 Push and hold menu button and [ ] setting button simultaneously for 10 seconds or more. • After a while, the display flashes as shown in the figure. “ALL” is displayed as indoor unit numbers during initial communication immediately after the power has been turned on. Indoor unit No.
Page 72 Indoor unit function Code No. (DN Code) table (includes functions needed to perform applied control on site) Description Item At shipment Filter display delay timer 0000: None 0001: 150H Depending on model 0002: 2500H 0003: 5000H type 0004: 10000H t l i f 0001: High degree of dirt (Half of standard time) Central control address 0001: No.1 unit...
Page 73 Description Item At shipment External static pressure Refer to next page. 0000: Standard High-ceiling adjustment (Air flow selection) Timer setting 0000: Available 0001: Unavailable 0000: Available (wired remote controller) (can be performed) (cannot be performed) Dual set point 0000: Unavailable 0002: Available 0000: Unavailable Alarm output setup...
Page 74 Item Description At shipment Notice code 0000: None 0000: None number 01 0001 ~ 0255 : Notice code 0129 : Notice code (201) Notice code 0000: None 0130 : Notice code (202) number 02 (0001 ~ 0255 : TU2C-LINK only) Notice code 0000: None number 03...
Page 75 [5d] External static pressure & High-ceiling adjustment <4-way Cassette, 2-way Cassette, 1-way Cassette SH Type> Set data High-ceiling adjustment 0000 Standard (Factory default) 0001 High ceiling 1 0003 High ceiling 3 <Compact 4-way Cassette> High-ceiling adjustment Set data 0000 Standard (Factory default) 0001 High ceiling 1 (UP015 only) 0003...
Page 76 Type DN code "10" Value Type Model 0000 1-way cassette MMU-UP***SH* 0001 4-way cassette MMU-UP***H* 0002 2-way cassette MMU-UP***WH* 0003 1-way cassette MMU-UP***YH* 0006 Concealed Duct / High Static Pressure MMD-UP***HP* 0007 Under Ceiling MMC-UP***HP* 0008 High Wall MMK-UP***HP* MML-UP***H* 0010 Floor standing cabinet 0011...
Page 77 6-4. Method to set Outdoor Unit Function Code No. (O.DN ) The settings can be changed by operating the switches on the interface board. In the TU2C-Link communication system, it can also be done by operating the wired remote controller. Applicable controls setup (settings at the site) Basic procedure...
Page 78 When switching from the wired remote controller (RBC-ASCU11*) Basic procedure Be sure to stop the air conditioner before making settings. (Change the setup while the air conditioner is not working.) 2,4,5 Push and hold menu button and [ ] setting button simultaneously for 10 seconds or more.
Page 79 Push the menu button to make Code No. [ ] flash. Change Code No. [ ] with [ ] setting button. Push the menu button to make Set data [ ] flash. Change Set data [ ] with [ ] setting button. Push OFF timer button to complete the set up.
Page 80 Outdoor Unit Function Code No. (O. DN) Table (Includes Functions Needed to Perform Applied Control on Site) Item Description At shipment Type Setting Code range : 0000 to 0255 According to type Type DN Code setting [03] 0000 0001 0002 –...
Page 81 Item Description At shipment System cooperation 0000 : None (vassal) 0001 : Prohibition 0000: None defrosting settings 1 0002 : 2-system cooperation (master unit) 0003 : 3-system cooperation (master unit) (vassal) (number cooperating) * set [01D] = 0002 or 0003 to outdoor unit set to master unit in outdoor DN code [01F] System cooperation 0000 : None 0001 to 0128: Addresses...
Page 82 6-5. Applied Control of Indoor Unit Control system using Remote location ON/OFF control box (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.
Page 83 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 84 Auto-off feature control [Function] • This function controls the indoor units individually. It is used when the start operation from outside is unnecessary but the stop operation is necessary. • A card switch box or card lock helps protect customers from forgetting to turn off the indoor unit. (not including the following Card Input 2) •...
Page 85 [Control items] Code No. (DN) Code No. (DN) ON (Status that card is inserted) OFF (Status that card is taken out) Manual prohibition release Manual prohibition Card Input 1 (Manual operation) (Operation stop) Manual prohibition release Manual prohibition Card Input 2 (Automatic operation) (Operation stop) Operation status continues...
Page 86 6-6. Applied Control of Outdoor Unit The outdoor fan high static pressure support and priority operation mode setting (cooling / heating / number of units / or priority indoor unit) functions are available by setting relevant switches provided on the interface P.C. board of the outdoor unit.
Page 87 6-6-2. Priority Operation Mode Setting Purpose/characteristics This function allows switching between priority cooling and priority heating. Four patterns of priority operation mode setting are available as shown in the table below. Select a suitable priority mode according to the needs of the customer. Setup CAUTION In the case of the priority indoor unit mode, it is necessary to set up the specific indoor unit chosen for priority...
Page 88 <RBC-AMT*> Push the buttons simultaneously and hold for at least 4 seconds. The display window will start flashing in a W HP S1 RQ# 2 # RI I little while. Verify that the displayed CODE No. is 10. W L P HU# VHW I DQ P RGH •...
Page 89 <RBC-ASCU11*> Priority set 0001 No priority set 0000 2,4,5 Push and hold menu button and [ ] setting button simultaneously for 10 seconds or more. • After a while, the display flashes as shown in the figure. “ALL” is displayed as indoor unit numbers during initial communication immediately after the power has been turned on.
Page 90 6-6-3. Applied Control of Outdoor Unit Optional control P.C. boards provide access to a range of functions as listed below. Function Outdoor unit for Control P.C. board to be used Outdoor unit interface P.C. board setting* control P.C. board TCB- TCB- TCB- Connector...
Page 91 6-6-3-1. Power peak-cut Control (Standard) (1) Four-core cable support L1: Display lamp ensuring power peak cut control Header outdoor unit Locally procured Optional PCB Power supply Display Outdoor unit relay interface PCB [OPERATION] Shield wire PJ17 CN513 SW105 [ON] [OFF] 1 2 3 4 Bit1 OFF, Bit2 OFF Shield...
Page 92 (2) Two-core cable support Setting SW105 bit1 on I/F P.C.board of the header outdoor unit to ON allows ON/OFF power peak-cut control to be switched using [ON] terminal input (SW1) alone. L1: Display lamp ensuring power peak cut control Header outdoor unit Locally procured Optional PCB Power...
Page 93 The optional P.C. board should be connected to the header outdoor unit (U1). L1: Display lamp ensuring power peak cut control Header outdoor unit Locally procured Optional PCB Power Display supply Outdoor unit relay interface PCB Shield wire [OPERATION] CN513 PJ17 SW105 [ON]...
Page 94 Note 1: Specifications of display relay contact • The terminal for display output ([Operation] terminal) must satisfy the following electrical rating. <Electrical Rating> 220 to 240 VAC, 10 mA or more, 1 A or less 24 VAC, 10 mA or more, 1 A or less (non-conductive load) When connecting a conductive load (e.g.
Page 95 6-6-3-3. Snowfall Fan Control Header outdoor unit Locally procured Connection Outdoor unit Optional PCB cable Snowfall sensor interface PCB COOL CN509 PJ17 HEAT Shield wire Operation SW1: Snowfall detection switch (snowfall sensor) An external snowfall signal turns on the outdoor unit fan. Terminal Input signal Operation...
Page 96 6-6-3-5. Night operation (sound reduction) Control Header outdoor unit Locally procured Connection Optional PCB Outdoor unit cable interface PCB CN508 PJ17 COOL HEAT Shield wire SW1: Night time signal switch Operation This function decreases noise at night or other times as necessary. Terminal Input signal Operation...
Page 97 6-6-3-6. Operation Mode Selection Control Header outdoor unit Locally procured Connection Outdoor unit Optional PCB cable interface PCB CN510 PJ17 COOL HEAT Shield wire SW1: Cooling mode specified input switch SW2: Heating mode specified input switch NOTE SW1: COOL mode selection switch SW2: HEAT mode selection switch Input signal Operation...
Page 98 6-6-3-7. Trouble/Operation Output Locally procured Header outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB OUTPUT1 CN511 PJ20 OUTPUT2 OUTPUT3 Shield wire Operation In-operation output: An in-operation indication signal is output as long as at least one indoor unit is in operation in the line.
Page 99 6-6-3-8. Compressor Operation Output Locally procured Outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB CTR1 OUTPUT1 CTR2 CN514 PJ20 OUTPUT2 Shield wire Operation When a compressor is in operation, a relay connected to the output terminal assigned to it is turned on (closed). When it is at rest, the relay is turned off (open).
Page 100 6-6-3-9. Operating Rate Output Locally procured Header outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB OUTPUT1 PJ20 CN514 OUTPUT2 MONITOR OUTPUT3 Shield wire Operation At the output terminals, a signal is present (relay closed) or absent (relay open) in various combinations according to the system operation factor, as shown in the diagram.
Page 101 6-7. Notice Code • Notice Code is a function only in TC2U-Link communication. • When the outdoor or indoor unit detects its conditions requiring caution or maintenance, this function notices you to check your units with the spanner mark (Notice code mark) on the wired remote controller or central controller display.
Page 102 2. Notice Code Display (7-segment display) on Outdoor Interface P.C. Board The notice codes detected or issued from the outdoor unit can be confirmed with 7-segment display on the P.C. board. (The notice codes detected or issued from the other outdoor unit cannot be displayed.) (1) Displaying the notice code being issued now Setting the SW01, SW02, SW03 to 1, 1, 14 respectively displays the notice code being issued from the outdoor unit on the 7-segment display 7-segment display [n.
Page 103 6-8. System Cooperation Defrosting Overview This is a function in which two systems or three systems of SMMS-u are communicably connected, and the timing of defrosting at each system is offset. Installing an indoor device of a different system in the same room and performing system cooperation defrosting suppresses the room temperature from dropping while defrosting.
Page 104 Setup method (1) Connect the header units of systems to perform system cooperation defrosting to each other by Uh (U3, U4) (Central control). (2) SW100-bit1 (termination resistance of Uh line) of master outdoor unit is turned on. (3) Set the outdoor DN code (O. DN) [01D], [01E], [01F] to the header unit in each system by the following setup method.
Page 105 Operations (contents of control) (1) Defrosting conditions for system cooperation defrosting (hereinafter referred to as “cooperation defrosting conditions”) are measured at each system, separately from normal defrosting conditions. When multiple systems satisfy the cooperation defrosting conditions at the same time, the system that has satisfied the conditions earlier starts defrosting.
Page 106 6-9. Night operation (Sound reduction control) Overview The 'Night operation' function of RBC-AMSU5* remote control can be used with SMMS-u. It reduces the • sound of outdoor unit putting priority on quietness during night time operation, etc., and the operation time can be set.
Page 107 The 'Night operation can be set by a number of remote controls. It operates according to the start time • • and the end time set by each remote controls. No.1 Indoor unit RC 22:00 06:50 Night operation Start/End time Start No.2 Indoor unit RC 12:00...
Page 108 7. TEST OPERATION 7-1. Procedure and Summary of Test Operation A test operation is carried out with the following procedure. When problems or a trouble occurs at any step, remove the causes of the problem or trouble referring to “8 TROUBLESHOOTING.” Check basic items, mainly the installation work.
Page 109 7-2. Check Items before Test Operation (before powering-on) Prior to the test operation, check the following items to verify there are no problems with the installation work. Main check items for electric wiring The communication system differs from previous period model air conditioners. Check wiring points again carefully.
Page 110 (2) In the case that a central control system is connected (before address setup) Central Remote Controller U3 U4 To other refrigerant line (1) Header Unit (A) Follower Unit (B) Follower Unit (C) Follower Unit (D) Follower Unit (E) U3 U4 U3 U4 U3 U4 U3 U4...
Page 111 Check list 1 • Using Checklist 1, check that there are no problems with the installation work. Is the capacity of the Outdoor total capacity Header unit (A) Indoor unit circuit breaker (Earth Follower unit (B) leakage breaker) Follower unit (C) appropriate? Follower unit (D) Follower unit (E)
Page 112 • Check the additional amount of refrigerant. Checklist 2 Calculate total additional amount refrigerant from the compensation amount of refrigerant according to total outdoor unit horsepower (A), the additional amount of refrigerant by the pipe diameter on the liquid side and the pipe length (B),the compensation amount of refrigerant according to indoor unit horsepower (C), and the total compensation amount of refrigerant according to the system diversity (D) Additional amount...
Page 113 Next, enter the total length for each liquid pipe diameter in the following table, and then calculate the additional amount of refrigerant by pipe length. <Additional amount of refrigerant by pipe length (B)> Pipe diameter on Standard amount Total pipe length on Additional amount of refrigerant the liquid side of refrigerant...
Page 114 <According to indoor unit horsepower for Hot Water Module (HWM)> Indoor Unit Corrective amount Number of Corrective amount Capacity of refrigerant connected indoor of refrigerant on each units indoor unit horsepower Number <According to indoor unit horsepower for Fresh Air Intake)> Corrective amount of refrigerant: 0 kg <According to indoor unit horsepower for High Efficiency 4-Way Cassette (MMU-UP∗∗∗∗H∗)>...
Page 115 7-3. Check at Main Power-on After turning on the main power of the indoor units and outdoor unit in the refrigerant line to conduct a test operation, check the following items in each outdoor and indoor unit. (After turning on the main power, be sure to check in order: indoor unit outdoor unit.) <Check on the outdoor unit>...
Page 116 <Check on the indoor unit> (1) Display check on the remote controller (in the case of a wired remote controller) Check that a frame, as shown in the following figure at left, is displayed on the LC display section of the remote controller.
Page 117 7-4. Address Setup This product requires address setup before operation. Follow this procedure for address setup. 7-4-1. Precautions (1) Address setup is not performed simply by turning on the power supply. (2) For indoor units, address setup can be done either by manual address setup or by automatic address setup: Automatic address setup: Setup from SW06 on the interface P.C.
Page 118 7-4-3. Address Setup Procedure Before setting the address, it is necessary to set the DIP-SW on the header outdoor unit interface P.C. board. 1. Follow the steps below to open the electrical control box cover (1) Loosen the screws on the left and right side of the electrical control box cover. (2) Remove the screw A for MMY-MUP220 and MUP240.
Page 119 2-2.Line (system) address setting For the central control among two or more refrigerant lines or group control among two or more refrigerant lines, set the line (system) address. (Example) Controlling a single refrigerant line centrally Controlling 2 or more refrigerant lines centrally Outdoor Outdoor Outdoor...
Page 120 Interface P.C. board on the header outdoor unit × Line address switches on the outdoor interface PC board (O : switch on, : switch off) SW101 SW102 SW103 2 3 4 2 3 4 2 3 4 SW104 SW105 SW106 2 3 4 2 3 4 SW101...
Page 121 Switch setting (setting example when controlling 2 or more refrigerant lines centrally) Outdoor units (setting manually) *The items in bold font must be set manually. Outdoor unit's interface Factory Header unit Folloer unit Header unit Folloer unit Header unit P.C. board default SW101 Bit1 (No se�ng...
Page 122 4. Open the access door cover and follow the steps below to set the address. REQUIREMENT • High voltage parts exist in the electrical control box. If you set addresses on an outdoor unit, operate the unit through the access door as shown in the illustration below to avoid electric shock.
Page 123 REQUIREMENT • When 2 or more refrigerant lines are controlled as a group, be sure to turn on all the indoor units in the group before setting addresses. • If you set the unit addresses of each line separately, each line’s header indoor unit is set separately. In that case, the Code No.
Page 124 Manual address setup from the remote controller With indoor wiring work completed and outdoor wiring work not done—in cases where indoor unit addresses are decided in advance from the wired remote controller, or in cases where addresses are change after address setup. <RBC-AMT*>...
Page 125 <RBC-ASCU11*> 4, 7, 10, 5, 6, 8, 13, 16 9, 11, 12, 14, 15 5, 6, 8, 9, 11, 12, 14, 15 Pair the indoor unit to set and the remote controller one-to-one. Turn on the power. Push and hold menu button and [ ] setting button simultaneously for 10 seconds or more.
Page 126 (Indoor address) Push the menu button to make Code No. flash. Change Code No. to 13 with [ setting button. Push the menu button to make Set data [****] flash. Set the indoor unit address with ] setting button. (TU2C-LINK : 0001~0128 TCC-LINK : 0001~0064) Push the Timer off button.
Page 127 NOTE (1) The Code No. [E04] (Indoor / outdoor communication trouble) will appear if line (system) addresses are mistakenly set. (2) When manual address setup has been done from a remote controller, and central control over refrigerant lines is to be done, setup the header unit of each line as follows: •...
Page 128 To find an indoor unit’s position from its address When checking unit numbers controlled as a group CODE No. DATA SETTING UNIT No. R.C. TEMP. ON / OFF TIMER SET TIME FILTER Stop RESET TEST SET CL (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another.
Page 129 Changing the indoor unit address using a remote controller To change an indoor unit address using a wired remote controller. <RBC-AMT*> 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.) CODE No.
Page 130 To change an indoor unit address using a wired remote controller. <RBC-ASCU11*> 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, 6 2, 4, 5...
Page 131 Resetting the address (Resetting to the factory default (address undecided)) Method 1 Clearing each address separately using a wired remote controller. Set the system address, indoor unit address and group address to “00Un” using a wired remote controller. (For the setting procedure, refer to the address setting procedures using the wired remote controller on the previous pages.) * Address not set will be either "00Un"...
Page 132 Communication setting This product needs setting either TU2C-Link or TCC-Link communication after the address setting. Follow the procedure below for the communication setting .TCC-Link communication has been set as the factory default. CAUTION • Be sure to complete the address setting before communication setting. •...
Page 133 Resetting the communication (Resetting to the factory default) 1. Turn off indoor units first, and then turn off outdoor units. (It turns on in order of Outdoor unit Indoor unit) 2. Turn on DIP switch 2 of SW106 on the header outdoor unit interface P.C.boards. 3.
Page 134 3. Communication method setting Setup procedure (1) Turn on indoor units first, and then turn on outdoor units. (2) Set the rotary switch of the interface P.C. board on the header outdoor unit to SW01=[2], SW02=[16] and SW03=[2]. (3) The 7-segment display switches between “c.c. b p s” and “c.c. 0 “ at 1-second intervals. (4) Push and hold SW04 for more than 5 seconds.
Page 135 7-4-4. Check after Address Setup when Central Control System Is Connected When the central control system is connected, check that the following setup has finished after address setup. Central remote (3) (2) controller U1 U2 U3 U4 To other refrigerant line Line address = 2 Line address = 1 Other refrigerant line...
Page 136 7-5. Troubleshooting in Test Operation If there are phenomena such as the output of a check code or the remote controller is not accepted when poweredon after wiring work or during address setup operation, the following causes are considered. 7-5-1. A Check Code is Displayed on the Remote Controller Check the code Header displayed on the...
Page 137 7-5-2. No Remote Controller Response with Check Code (Operation from the indoor remote controller is not accepted, and a check code is displayed on the 7- segment display of the interface PC board of the header unit) Indoor remote Header unit controller 7-segment Cause...
Page 138 7-5-4. Connected Indoor/Outdoor Unit Quantity Check (In checking the number of connected outdoor units and connected indoor units after address setup, a lower number of connected units is displayed (There are outdoor/ indoor units that do not operate in a test operation)) Status Cause...
Page 139 Miswiring example Remote Header unit Figure controller 7-segment Miswiring example status display Header unit Header unit Header unit Header unit Line 1 Line 2 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U1 U2 Fig 1 No response E19, 02 U1 U2 U1 U2...
Page 140 7-6. Test Operation Check 7-6-1. Fan Check START Check code appears When a check code has been Push the Start/Stop button on the remote controller. displayed on the remote controller eliminate the cause of the trouble, by referring to Check code "check code and check appears position displayed on remote...
Page 141 7-6-2. Cooling/Heating Test Operation Check The cooling/heating test operation check can be performed on both the indoor remote controller and the outdoor header unit interface PC board. (1) Test operation start/stop operation Test operation from the indoor remote controller • Wired remote controller: Refer to the items below in “Test operation” of the wired remote controller. •...
Page 142 Wireless remote controller Turn on the power of the air conditioner. <Overview of test run operations using the wireless remote controller> When power is turned on for the first time after installation, it takes approx. 5 Cooling test run: minutes until the remote controller ON/OFF 17°C 18°C...
Page 143 (2) Test operation START Refer to "Test operation procedure" Test operation for one indoor unit of the indoor remote controller. The operation does not start for approximately 3 minutes after Operation starts powering-on or stopping operation. Note: After powering-on, it may require up to 10 minutes to start the operation due to the initial communications of the system.
Page 144 Note 1: Criteria for the difference between suction and discharge temperatures (1) Cooling operation After operating for a minimum of 30 minutes in “COOL” mode, if the T dry bulb temperature difference between suction and discharge air of the indoor unit is 8°C or more, it is normal. (2) Heating operation After operating for a minimum of 30 minutes in “HEAT”...
Page 145 7-7. Service Support Function 7-7-1. Check Function for Connecting of Refrigerant and Control Lines This function is provided to check misconnection of the refrigerant pipes and the control transmission line (Wiring over lines) between indoor unit and outdoor unit by using the switch on the interface P.C. board of the header unit.
Page 146 On rotations of outdoor fans Outdoor fans may rotate slowly to control pressure when cooling with low outer air temperature or heating with excessive load. For control content, also refer to items in Section 5, “Control Outline: Outdoor Unit, Outdoor Fan Control.”...
Page 147 7-7-2. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit The following functions of the indoor unit can start or stop by the switches on the interface P.C. board of the header unit. Function Outline Setup/Release 7-segment display Cooling test Changes the mode of all the [Setup] Section A...
Page 148 NOTE 1) This start/stop function only sends the signals from the outdoor unit to the indoor unit, such as start, stop, operation mode, etc. It does not resend the signals even if the indoor unit does not follow the sent signals. NOTE 2) The above controls are not used during abnormal stop.
Page 149 (1) Cooling test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the cooling test operation mode, by using switches on the interface board of the header unit. <Operation procedure>...
Page 150 (2) Heating test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the heating test operation mode, by using switches on the interface board of the header unit. <Operation procedure>...
Page 151 (3) Fan test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the fan test operation mode by using switches on the interface P.C. board of the header unit. <Operation procedure>...
Page 152 (4) Batch start/stop (ON/OFF) function This function is provided to start/stop collectively all the indoor units connected to the same system by using switches on the interface board of the header unit. <Operation procedure> Be sure to turn on power at the indoor side Power ON before power-ON of outdoor unit.
Page 153 (5) Individual start/stop (ON/OFF) individual test operation function This function is provided to start/stop (ON/OFF) individually each indoor unit connected to the same system by using switches on the interface board of the header unit. Set SW01 [16] and set SW02, SW03 to indoor address No. (1 to 128) to be started (Refer to the following table*) - only the setup indoor unit starts operation.
Page 154 7-7-3. Check Code Clearing Function (1)Clearing from the main remote controller <RBC-AMT*> Check code clearing in outdoor unit Check code of the outdoor unit currently detected is cleared by the unit of one refrigerant circuit system to which the indoor units operated by the remote controller is connected. (Check code of the indoor unit is not cleared.) For clearing check codes, the service monitor function of the remote controller is used.
Page 155 <RBC-ASCU11*> Clearing a check code of the outdoor unit There is no such function in the remote controller. Push the [OFF timer] button for over 10 seconds. Each time the [ ] button is pushed, the recorded troubleshooting history is displayed in sequence.
Page 156 (2) Clearing check code by using switches on the interface board of the header unit Using the switches on the interface P.C. board of the header unit, this function is to clear the currently detected check code for each refrigerant circuit system without resetting the power supply. Check codes in both outdoor and indoor units are once cleared, and check code detection is performed again.
Page 157 7-7-4. Remote Controller Distinction Function This function is provided to distinguish the remote controller connected to the indoor unit from the outdoor unit for a refrigerant circuit system by using switches on the interface P.C. board of the header unit. <Distinction procedure>...
Page 158 7-7-5. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit This function is provided to open or close forcedly PMV for 2 minutes in all the indoor units by the switch operation on the interface P.C. board of the header unit. This function is also used to open PMV fully when turning off the power and executing an operation.
Page 159 7-7-6. Pulse Motor Valve (PMV) Forced Open/Close Function and Solenoid valve Forced ON Function in Outdoor Unit The solenoid valves provided to outdoor units can be forced ON (open) by switching operations at the interface P.C. board of the outdoor unit. Also, the pulse motor valves (PMV1, PMV2, PMV3, PMV4) of the outdoor unit can be forced to full-open, half open, and full-closed for two minutes.
Page 160 [Method of operating pulse motor valve (PMV) (forced open/close)] (1) Use the rotary switch [SW03] to select the PMV to operate. When [P#. ] is displayed in the PMV display, PMV# is operating according to normal control. (#: selected PMV No.) (2) Pressing the push switch [SW04] for one second sets the selected PMV# to full-open.
Page 161 7-7-7. Fan Operation Check in Outdoor Unit This function is provided to check the fan operation of the outdoor unit by using switches on the interface P.C. board in the outdoor unit. The fan speed can be controlled by setting of the switches. Use this function to check the operation or abnormal sound in the fan system.
Page 162 7-7-8. Abnormal Outdoor Unit Discrimination Method By Fan Operating Function This function is provided to forcedly operate the fan of the outdoor unit in which a check code occurred or the fan of the normal outdoor unit by the switch operation on the interface P.C. board in the header unit. To specify which one of the follower units connected to the system had problem, use this function for the system stop due to a follower unit problem (Check code [E28]).
Page 163 7-7-9. Manual Adjustment Function of Outside Temperature (TO) Sensor This function is provided to fix TO sensor value manually by the switch operation on the interface P.C. board in the outdoor unit. When the unit stops abnormally due to TO sensor failure, etc, an emergent operation is available by setting up the value manually to position near the current outside temperature.
Page 164 7-7-10. Refrigerant leakage detection The refrigerant leakage can be confirmed by using the switches on Interface P.C.board of the outdoor unit. If there is a leak, the location must be found in order to recover the refrigerant. After that, implement appropriate countermeasure and refill the refrigerant to its standard volume. Refrigerant leaks can be detected by comparing the Actual opening of PMV with the Calculated opening of PMV* during the operation.
Page 165 7-7-11. Monitor Function of Remote Controller Switch Switching to the service monitor mode <Content> The sensor temperature or operation status of the remote controller, indoor unit, or the outdoor unit can be known by switching to the service monitor mode from the remote controller. [Procedure] <RBC-AMT*>...
Page 166 Display Code No. Unit format Room temperature (Use to control) °C e l l ° ° ° 4 l i o ° l i o ° l i o ° Indoor discharge air temperature (TF) *1 °C Indoor fan motor number of revolutions [0100]=1000rpm t l i Suction exchanger (TSA) *1...
Page 167 Please read and understand license agreement, if you agree to license agreement, please click “Agree” . And download the smartphone application software and USER GUIDE. Be sure to read the USER GUIDE before the use of this application. https://www.toshiba-carrier.co.jp/global/appli/smms_wave_tool_advance/index.htm Wave Tool Advance 7-8-2. About Wave Tool Advance System Info.
Page 168 For example; How to prohibit Test operation from WTA (If you need) Rotary switch Push SW 7-segment Steps Items display SW01 SW02 SW03 SW04 SW05 SW06 Change rotary switch position for Outdoor DN code setting dn.SEt Push SW04 for activate DN code Push dn.001 Change DN code Number to "dn.005"...
Page 169 8. TROUBLESHOOTING 8-1. Overview (1) Before engaging in troubleshooting (a) Applicable models Super Modular Multi System (SMMS-u) models. (Indoor units: MM -U(A)P , Outdoor units: MMY-MUP (b) Tools and measuring devices required • Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. •...
Page 170 8-2. Troubleshooting method The remote controllers (main remote controller and central remote controller) and the interface P.C. board of an outdoor unit have an LCD display (remote controller) or a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the trouble site / trouble part may be identified in the event of a trouble by following the method described below.
Page 171 (Check code detected by remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical fault site Description of trouble Remote control Operation Timer Ready Sub-code Flash No master remote control, Signals cannot be received from indoor unit; –...
Page 172 List of Check Codes (Outdoor Unit) (Check code detected by outdoor interface - typical examples) If "HELLO" is displayed on the oudoor 7-segment for 1 minute or more, turn off the power supply once and then turn on the power supply again after passage of 30 seconds or more. When the same symptom appears, it is considered there is a possibility of I/F board trouble.
Page 173 Check code Display of receiving unit Central Indicator light block Outdoor 7-segment display Typical problem site Description of problem control or main remote Operation Timer Ready Sub-code Flash controller display 01: TS1 sensor Outdoor suction • Outdoor suction temperature sensor •...
Page 174 Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block Typical problem site Description of problem control or main remote Operation Timer Ready Sub-code controller Flash display P.C.board P.C.board Compressor Fan Motor Compressor Fan Motor Trouble in number of There are insufficient number of P.C.
Page 175 (Check code detected by Inverter of Compressor featuring in outdoor unit - typical examples) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Central Typical problem site Description of proplem control or main remote Operation Timer Ready Sub-code controller Flash...
Page 176 8-3. Troubleshooting based on information displayed on remote controller Using main remote controller (RBC-ASCU11*) <RBC-ASCU11*> (1) Confirmation and check If a problem occurs with the air conditioner, the OFF timer indicator alternately shows the check code and the indoor Unit No. in which the problem occurred.
Page 177 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”. : Blinking (0.5 seconds) : Lighting : Goes off...
Page 178 Cause of trouble Light block Check code Heat exchanger temperature sensor (TCJ) trouble Operation Timer Ready Heat exchanger temperature sensor (TC2) trouble Indoor unit temperature Heat exchanger temperature sensor (TC1) trouble sensor trouble Ambient temperature sensor (TA/TSA) trouble Alternate blinking Discharge temperature sensor (TF) trouble Discharge temperature sensor (TD1) trouble Operation Timer...
Page 179 Cause of trouble Light block Check code Operation Timer Ready Occupancy sensor trouble Outdoor EEPROM trouble Synchronized blinking Other (indications not involving check code) Cause of trouble Light block Check code Operation Timer Ready – Test run in progress Synchronized blinking Operation Timer Ready Setting incompatibility...
Page 180 8-4. Check Codes Displayed on Remote Controller and SMMS-u 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 Location Check code detection Main Outdoor 7-segment display Description System status...
Page 181 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code No. of indoor Indoor unit Indoor-outdoor All stop Condition 1 • Check power supply to units from communication One indoor unit or more indoor unit.
Page 182 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Too many All stop • Combined capacity of • Check capacities of indoor Capacity over indoor units indoor units is too large.
Page 183 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected Outdoor All stop Outdoor header unit • Check check code outdoor unit No. follower unit receives trouble code from displayed on outdoor follower unit.
Page 184 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code TD2 sensor All stop Sensor resistance is infinity • Check connection of TD2 trouble or zero (open/short circuit). sensor connector.
Page 185 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor All stop Readings of high-pressure • Check connection of high- pressure Pd sensor and low-pressure pressure Pd sensor sensor wiring Ps sensor are switched.
Page 186 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code TD1 sensor All stop Discharge temperature of • Check installation of TD1 miswiring compressor 1 (TD1) does sensor.
Page 187 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 01: TK1 oil Oil level All stop No temperature change is • Check for disconnection of circuit trouble detection detected by TK1 despite TK1 sensor.
Page 188 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor All stop Initial setting of I/F P.C. • Check model setting of — capacity not set board has not been P.C.
Page 189 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 01: Compressor All stop High-pressure SW is • Check connection of high- Activation of 1 side high-pressure activated.
Page 190 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected indoor Indoor unit Indoor overflow All stop • Float switch operates. • Check float switch address trouble •...
Page 191 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Discharge All stop Discharge temperature • Check outdoor service temperature (TD2) exceeds 115 ˚C. valves (gas side, liquid TD2 trouble side) to confirm full opening.
Page 192 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 1∗: Fan P.C. Fan INV. Outdoor fan All stop Protected operation of Fan • Check fan motor. board 1 P.C.
Page 193 Check codes Detected by Central Control Device Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Central Central control Continued Central control device is • Check for failure in central control device operation...
Page 194 Points to Note When Servicing Compressor (1) When checking the outputs of inverters, remove the wiring from all the compressors. How to Check Inverter Output (1) Turn off the power supply. (2) Remove compressor leads from the compressor P.C. board. (The model with two compressor should remove the wiring for two sets (6 leads).
Page 195 8-5. Diagnosis procedure for each check code - 195 -...
Page 196 - 196 -...
Page 197 - 197 -...
Page 198 - 198 -...
Page 199 - 199 -...
Page 200 - 200 -...
Page 201 - 201 -...
Page 202 - 202 -...
Page 203 - 203 -...
Page 204 - 204 -...
Page 205 - 205 -...
Page 206 - 206 -...
Page 207 - 207 -...
Page 208 - 208 -...
Page 209 - 209 -...
Page 210 - 210 -...
Page 211 - 211 -...
Page 212 - 212 -...
Page 213 - 213 -...
Page 214 - 214 -...
Page 215 - 215 -...
Page 216 - 216 -...
Page 217 - 217 -...
Page 218 - 218 -...
Page 219 - 219 -...
Page 220 - 220 -...
Page 221 - 221 -...
Page 222 - 222 -...
Page 223 - 223 -...
Page 224 - 224 -...
Page 225 - 225 -...
Page 226 8-6. 7-Segment Display Function 7-segment display on outdoor unit (interface P.C. board) The interface control P.C. board features a 7-segment LED display designed to check operational status. Display items can be changed by changing the combination of the number settings of rotary switches provided on the P.C.
Page 227 Checking Procedure to Be Followed in Event of Abnormal Shutdown If the system is shut down due to a trouble in the outdoor unit, perform checks in the following steps: Open the panel of the outdoor unit and inspection window of the electric parts box, and check the 7-segment display.
Page 228 (1) Display of System Information (Displayed on Header Outdoor Unit Only) SW01 SW02 SW03 Display detail − − System capacity A […8]~[120]:8 to 120 HP B [HP] No. of outdoor units A […1]~[…5]:1 to 5 B […P] No. of indoor units connected / No. (1) [...
Page 229 (2) Display of Outdoor Unit Information (Displayed on Each Outdoor Unit) SW01 SW02 SW03 Display detail Check code data A Outdoor unit No.: [U1] to [U5] B If there is no check code, [U. ∗. ] is displayed. If there is check code, [U. ∗. err] ⇔ [OOO]. [ ([OOO] : Check code, [ ] : Sub-code) (The display switches alternately)
Page 230 (3) Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit) Display detail SW01 SW02 SW03 Pd pressure data Pd pressure (MPaG) is displayed in decimal format. ∗. ∗ ∗ (MPaG: Approx. 10 times magnitude of kg/cm P d. ∗. ∗ ∗ Ps pressure data Ps pressure (MPaG) is displayed in decimal format.
Page 231 (4) Display of Outdoor Cycle Data (Displayed at Header Unit) * This method is used when displaying follower unit information on the 7-segment display of the header unit. SW01 SW02 SW03 Display detail Trouble data [U. ], : SW03 setting No. + 1 (Outdoor unit No. U2 to U5) B Check code is displayed (latest one only).
Page 232 (5) Display of Indoor Unit Information (Displayed on Header Unit Only) SW01 SW02 SW03 Display detail Indoor check code B No check code : [- - -] Indoor BUS communication signal B Upon receiving signal : [..1], Other times : [..] receiving status Indoor HP capacity B ...
Page 233 8-7. Oil Level Judgment Display The current compressor oil level judgment results can be accessed by setting the switches provided on the interface P.C. board of an outdoor unit. Perform the checks in accordance with the procedure described below. Operation Procedure (1) Start the operation.
Page 234 8-8. SMMS-u Outdoor Interface P.C. Board Function Setting Change Table 1. Switch/Function Setting Change SW No. Change contents bit1 Uh communication termination OFF: No termination resistance ON: With termination resistance resistance for central control SW100 DIP SW 2 bit Uv communication termination bit2 resistance between indoor and OFF: No termination resistance...
Page 235 Interface Board Switches and jumper wire positions to be used in the Function setup switching table SW101 SW102 SW103 1 2 3 4 1 2 3 4 1 2 3 4 SW104 SW105SW107 1 2 3 4 1 2 3 4 SW100 SW100 - 235 -...
Page 236 8-9. Leakage/Clogging of Refrigerating Cycle Circuit List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MUP0801*, 1001*, 1201*, 1401*) Clogging Unit generating Location of Part Problem check code Detected problem and check code Symptom (Refer to next page) Outdoor PMV1, 2...
Page 237 Outdoor Unit (8, 10, 12, 14HP) Model: MMY-MUP0801*, 1001*, 1201*, 1401* Fan motor PMV1 Main heat exchanger Sub heat exchanger PMV2 4-way valve High-pressure sensor Low-pressure Accumulator High- SV3D pressure switch SV3F SV41 Subcool Heat exchanger PMV4 Liquid side Liquid side Gas side Gas side Service valve...
Page 238 List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MUP14A1*, 1601*, 1801*, 2001*) Clogging Location of Unit generating Part check code Detected problem and check code Symptom Problem (Refer to next page) Outdoor PMV1, 2, 3 Corresponding unit Activation of high-pressure protection Rise of pressure...
Page 239 Outdoor Unit (14A, 16, 18, 20HP) Model: MMY-MUP14A1*, 1601*, 1801*, 2001* Fan motor Fan motor PMV1 Right side Left side Main heat exchanger Main heat exchanger Left side RIght side PMV2 Sub heat exchanger Sub heat exchanger PMV3 4-way valve Check Valve High-pressure sensor...
Page 240 List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MUP2201*, 2401*) Clogging Unit generating Location of Part check code Detected problem and check code Symptom Problem (Refer to next page) Outdoor PMV1, 2, 3 Corresponding unit Activation of high-pressure protection Rise of pressure...
Page 241 Outdoor Unit (22, 24HP) Model: MMY-MUP2201*, 2401* Fan motor Fan motor PMV1 Right side Left side Main heat exchanger Main heat exchanger Left side Right side PMV2 Sub heat exchanger Sub heat exchanger PMV3 4-way valve High-pressure sensor Low-pressure SV3D sensor Accumulator High-...
Page 242 8-10. Sensor Characteristics Outdoor Unit Temperature sensor characteristics Outdoor TS1, TS3, TE1, TE2, TE3, TL1, TL2, TL3 and TO sensors Temperature [°C] Resistance [kΩ] 101.7 76.3 57.7 44.0 33.8 Resistance 26.1 [kΩ] 20.4 (10 °C or below) Resistance 16.0 [kΩ] (10 °C or above) 13.0 10.0kΩ...
Page 243 Outdoor Unit Pressure sensor characteristics • Input/output wiring summary High pressure side (PD) Low pressure side (PS) Pin No. Input/output name Lead wire color Input/output name Lead wire color OUTPUT White — — — — OUTPUT White Black Black • Output voltage vs. pressure High pressure side (PD) Low pressure side (PS) 4.5V...
Page 244 Indoor TC1 sensor Temperature [°C] Resistance [kΩ] 98.3 73.7 55.8 42.6 32.8 Resistance Resistance [kΩ] [kΩ] 25.5 (10°C or beiow) (10°C or above) 20.0 15.7 12.5 10.0 Temperature [°C] Indoor TC2 and TCJ, TOA sensor Temperature [°C] Resistance [kΩ] 102.9 76.6 57.7 44.0...
Page 245 8-11. Pressure Sensor Output Check Outdoor Unit Pd sensor characteristics 0 to 4.15 MPa (0.5 to 4.73V output for 0 to 4.15 MPa) Voltage readings across pins 2 and 3 of CN501 on indoor unit main P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT...
Page 246 Outdoor Unit PS sensor characteristics 0 to 2.24 MPa (0.5 to 5V output for 0 to 2.24 MPa) Voltage readings across pins 2 and 3 of CN500 on indoor unit main P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT VOLT...
Page 247 9. BACKUP OPERATION (EMERGENCY OPERATION) This product offers backup modes of operation to tide over certain emergency situations. If a trouble occurs in one of the compressors, it is possible to operate the system on an emergency basis by operating only the remaining compressor, (compressor backup operation).
Page 248 9-2. Compressor Backup Operation Setting <Outline> If a failure occurs to one of the compressors installed in outdoor unit, follow the procedure described below to back up the failured compressor by using the remaining, normal compressor. Note: The backup operation of compressor cannot be done for MMY-MUP0801*, MMY-MUP1001*, MMY-MUP1201*, MMY-MUP1401*, MMY-MUP14A1*, MMY-MUP1601*, MMY-MUP1801* and MMY-MUP2001*, because only one compressor is installed in these models.
Page 249 (3) Change the connection of wiring as shown in the below. Outdoor Unit (22, 24HP) Model: MMY-MUP2201", MUP2401" 1. When compressor No.1 is failure : No change the connection of wiring 2. When compressor No.2 is failure : Connection of wiring is changed as shown below. Compressor P.C.board 1 CN21...
Page 250 9-3. Outdoor Unit Backup Operation Setting <Outline> This product allows outdoor unit backup operation setting to be performed either at the header unit or a follower unit. If any of the failure modes specified below occurs to one of the outdoor units in a multi-outdoor unit system, proceed with outdoor unit backup operation.
Page 251 Uc (U5/U6) wiring treatment Fully close gas pipe service valve. Leave service valves of liquid fully open. (if there is leakage from outdoor PMV, fully close liquid pipe.) Interface P.C. board of header unit SW101 SW102 SW103 Setup of failed follower outdoor unit [Setup of header unit] 1 2 3 4 1 2 3 4...
Page 252 (6) Turn on the power supply to all the units connected to the system other than the failed follower unit. Determine what to do with the power supply to the failed follower unit in the following manner. <In case of failure in compressor, electrical part, P.C. board> Leave the power supply off.
Page 253 9-3-2. Header outdoor unit backup operation setting (failure of header outdoor unit) <Work procedure> (1) Turn off the power supply to all the units connected to the system at the source. [Setup of failed header outdoor unit] (2) Fully close the gas pipe service valve of the failed outdoor unit. (3) Leave the service valves of the liquid pipes fully open (to prevent refrigerant stagnation in the failed).
Page 254 (8) Set Bits 1 and 2 of SW100 on the interface P.C. board same as that of the failed header unit (terminator resistance setting). Set SW101 and SW102 Turn on Bit 3 of SW103. identically to failed header SW101 SW102 SW103 1 2 3 4 1 2 3 4...
Page 255 9-4. Cooling-Season Outdoor Unit Backup Operation Setting <Outline> Limited to summer and other situations where there is no need for heating operation, this function makes it possible to get backup operation up and running quickly without going through the normal setup procedure, regardless of which type of outdoor unit has failed, the header unit or a follower unit.
Page 256 9-5. Outdoor Unit Automatic Backup Operation Outline Outline In case of the outdoor unit failure, this product supports automatic backup operation for both header and follower units. In system with connection of two or more outdoor units, if the automatic backup operation setting is ON and the following failure modes occur, the automatic backup operation function allows continuous operation.
Page 257 10. OUTDOOR UNIT REFRIGERANT RECOVERY METHOD 10-1. Refrigerant Recovery from Troubled Outdoor Unit (Reclaim) This product supports refrigerant reclaim, a function which allows refrigerant to be recovered from an outdoor unit in need of repair using a normal outdoor unit in a system featuring multiple outdoor units. START 10.1.1 Note for refrigerant recovery operation Can troubled unit energized?
Page 258 (4) [rd] [… FF] will be displayed on the 7-segment display, and reclaim operation will start. * To put the operation on hold midway, turn off the power supply to all the outdoor units, or press SW05 on the interface P.C. board. (5) Approx.
Page 259 10-1-3. Refrigerant recovery procedure B (Case that the troubled outdoor unit does not turn on) <Outline> If outdoor unit backup operation setting is performed, use an alternative refrigerant recovery procedure as described below, provided that the power cannot be turned on for the troubled outdoor unit. (Refrigerant will be recovered from the failed outdoor unit using the test cooling operation function.) Note: If the power cannot be turned on the troubled outdoor unit, the solenoid valves and PMVs of the unit cannot be turned on, so that it reduces the amount of recovered refrigerant compared to a standard...
Page 260 10-2. How to Operate System While Troubled Outdoor Unit Being Repaired <Outline> After refrigerant is recovered from the troubled outdoor unit through a reclaim operation, the overall amount of refrigerant held by the system becomes excessive, and this makes it impossible to operate the remaining outdoor units even though they are not troubled.
Page 261 10-3. Work procedure after Repair When vacuuming in the repaired outdoor unit, follow the procedure described below. <Work procedure> (1) Follow the procedure below to fully open PMV 1, 2, 3, and 4 and turn off the outdoor unit within 2 minutes after the operation is completed.
Page 262 11. REPLACING COMPRESSORS 11-1. Compressor Replacement Procedure (Outline) START WARNING In situations such as indoor unit relocation and Is the outdoor unit the only one in the system? repairs, it is not possible to recover all the refrigerant held by the system in the outdoor units. It could cause a serious accident, such as blow out or Manually open Recover refrigerant...
Page 263 11-2. Replacement of Compressors <Checking color of oil in troubled compressor> • Lay the troubled compressor down, draw a small amount of oil via the oil equalization pipe, and check its color against color samples. • Determine the number of compressors to be replaced according to the Compressor color checking result.
Page 264 Model: MMY-MUP14A1*, 1601*, 1801* and 2001* For 14A, 16, 18, 20HP [When replacing troubled compressor only] <Measuring amount of oil in troubled compressor> Put the troubled compressor above the scale to measure the amount of oil. Amount of oil in troubled compressor: A [cc] = (Weight of compressor as it was dismantled (kg) - 42.6kg) x 1042 (Specific volume of oil: 1042 [cc/kg]) * The weight of the compressor without oil inside is 42.6 kg.
Page 265 Model: MMY-MUP2201* and 2401* For 22, 24HP [When replacing normal as well as troubled compressor] - applicable to <Remove the normal compressor> • Remove the normal compressor in the same way as the troubled compressor. Note: • Be sure to insulate the removed compressor leads using insulation tape, etc. WARNING When detaching a pipe by heating with a burner at brazed joint, take care as any oil left in the piping may burn in a momentary flash of fire when the brazing filler metal melts.
Page 266 <Installing compressor> • Install a compressor by following the dismantling procedure in reverse. Notes: • The tightening torque of the screws, used to fix the compressor’s lead wires, is 2.5 N•m. • The tightening torque of the hexagonal bolts, used to mount the compressor, is 19.6 N•m. •...
Page 267 11-3. Check Procedure to Search Cause of Compressor Oil Shortage Is the wiring of the TK1 sensor and TK2 Correct the miswiring or connection. sensor of the unit with the replaced TK1: CN502 TK2: CN380 compressor correct? Are the characteristics of the TK1 and TK2 sensors of the unit Replace the troubled sensor.
Page 268 <MMY-MUP0801*, 1001*, 1201* and 1401*> Check items and procedures to follow when checking oil circuit with compressor(s) disconnected Check item Location Procedure 1) With PMV 1, 2 and 4 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
Page 269 <MMY-MUP14A1*, 1601*, 1801* and 2001*> Check items and procedures to follow when checking oil circuit with compressor(s) disconnected Check item Location Procedure 1) With PMV 1, 2, 3 and 4 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
Page 270 <MMY-MUP2201*, 2401*> Check items and procedures to follow when checking oil circuit with compressor(s) disconnected Check item Location Procedure 1) With PMV 1, 2, 3 and 4 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
Page 271 12. OUTDOOR UNIT PARTS REPLACEMENT METHODS Part Work procedure Remarks Cabinet WARNING NFC holder Wear a pair of gloves. NFC holder Otherwise, you will risk an injury involving a replacement Insert each part or some other object. claw of NFC holder into each squre hole 1.
Page 272 Part Work procedure Remarks WARNING Propeller 2) Top plate fan and Wear a pair of gloves. Fan motor Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Stop the air conditioner operation, and turn off the circuit breaker.
Page 273 Part Work procedure Remarks WARNING Heat <8 to 14HP> Discharge cabinet exchanger Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Remove No. 1. Cabinet, No.2. propeller fan/fan motor, and No.
Page 274 Part Work procedure Remarks Heat 3) Cut the pipes at the heat exchanger (Fig.6, Fig.7). exchanger (continued) <8 to 14HP> <14A to 24HP> (1) Header pipe at the gas side (Main heat exchanger) (1) Header pipe at the gas side (Main heat exchanger) (2) Distributor at the liquid (3) Header pipe at the gas side (Main heat exchanger)
Page 275 Part Work procedure Remarks WARNING Inverter assembly Wear a pair of gloves. 5) Screw Otherwise, you will risk an injury involving a replacement part or some other object. 5) Screw 1. Detachment 1) Stop the air conditioner operation, and turn off the circuit breaker.
Page 276 Part Work procedure Remarks 2. Attachment Inverter assembly 1) Carry out installation by following reverse procedure in (continued) the detachment 1) to 7). NOTE 1 Apply thickly the heat sink grease to the refrigerant cooling heat sink and install the inverter box. Return the wires to the original state.
Page 277 Part Work procedure Remarks 1. Detachment Waterproof 3) Cut the binding band cover 1) Stop the air conditioner operation, and turn off the assembly circuit breaker. 2) Remove the inverter assembly. (Refer to the detachment for No.4 inverter assembly.) 3) Remove the binding band at the upper of the refrigerant cooling heat sink and the fixing rubber at the lower.
Page 278 Part Work procedure Remarks WARNING Reactor 3) Reactor box assembly Wear a pair of gloves. (8-14HP) Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Stop the air conditioner operation, and turn off the circuit breaker.
Page 279 Part Work procedure Remarks WARNING Reactor assembly 3) Fixed plate of reactor box Wear a pair of gloves. (14A-24HP) Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Stop the air conditioner operation, and turn off the circuit breaker.
Page 280 Part Work procedure Remarks WARNING Compressor Wear a pair of gloves. <8 to 14HP> Otherwise, you will risk an injury involving a replacement part or some other object. cover Side cover 1. Detachment Remove the Front cover while cover lifting it (Upper) 1) Carry out work of No.
Page 281 Part Work procedure Remarks 2. Attachment Compressor (continued) 1) Carry out installation by following reverse procedure in the detachment 1) to 4). 2) Install the compressor and braze the pipes, and then install each wire around the compressor. (Comp.lead, Case heater, Temperature sensor (TD, TK)) Exchange a comp.
Page 282 Part Work procedure Remarks WARNING 4-way valve - <8 to 14HP> Wear a pair of gloves. detachment/ Otherwise, you will risk an injury involving a replacement attachment part or some other object. 1. Detachment 1) Carry out work of No. 1 Cabinet and disconnect wires around 4-way valve or move them away from parts to be brazed to prevent them from being fired while brazing.
Page 283 Part Work procedure Remarks WARNING Accumulator - detachment/ Wear a pair of gloves. attachment Otherwise, you will risk an injury involving a replacement <8 to 14HP> part or some other object. 1. Detachment 1) Carry out work of No. 1 Cabinet. 2) Disconnect the wires, pipe fixing rubber, or pipe cover, or move them away from parts to be brazed to prevent them from being fired while brazing.
Page 284 Part Work procedure Remarks 1. Detachment Accumulator - detachment/ 1) Carry out work of No. 1 Cabinet. attachment 2) Disconnect the wires, pipe fixing rubber, or pipe cover, <14A to 24HP> or move them away from parts to be brazed to prevent them from being fired while brazing.
Page 285 13. P.C. BOARD REPLACEMENT PROCEDURES 13-1. Replacement of outdoor P.C. board & Inverter Parts 13-1-1. List of service parts (Inverter) Parts code Description Applicable model Parts Product code Specifications Power supply terminal block JXO-6004 TERMINAL (75A) AC600V/75A,4P 43T60437 Noise Filter P.C. board (1) MCC-1748 ASM-S-PCB (N/F) —...
Page 286 13-1-2. Configuration of inverter assembly MMY-MUP0801* MMY-MUP1001* MMY-MUP1201* The Interface P.C. board sub-assembly Interface P.C. board MMY-MUP1401* (MCC-1747) Remove the Interface P.C. board sub-assembly Inverter P.C. board for fan (MCC-1734) Thermistor Magnet Contactor Noise Filter P.C. board(1) (MCC-1748) Communication terminal block Inverter P.C.
Page 287 MMY-MUP14A1* MMY-MUP1601* Interface P.C. board MMY-MUP1801* (MCC-1747) MMY-MUP2001* Inverter P.C. board for fan 2 The Interface P.C. board sub-assembly (MCC-1734) Remove the Interface P.C. board sub-assembly Inverter P.C. board for fan 1 (MCC-1734) Thermistor Magnet Contactor Noise Filter P.C. board(2) (MCC-1748) Line Filter Communication terminal block...
Page 288 MMY-MUP2201* Interface P.C. board MMY-MUP2401* (MCC-1747) Inverter P.C. board for fan 2 The Interface P.C.B. sub-assembly (MCC-1734) Remove the Interface P.C.B. sub-assembly Inverter P.C. board for fan 1 (MCC-1734) Magnet Contactor 2 Thermistor 2 Thermistor 1 Magnet Contactor 1 Noise Filter P.C. board(2) (MCC-1748) Line Filter Communication terminal block...
Page 289 13-1-3. Interface P.C. Board (MCC-1747) Replacement Procedure Subject part 43T6W890: ALL model This Interface service P.C. board is commonly installed in different models. Please perform the change by a model after replacement of a service board. Included item: MCC-1747 : 1pcs Spacer : 4pcs Spacer : 2pcs Support : 1pcs...
Page 290 (11) “L10 : Outdoor capacity not set” check code is displayed on the 7-segment display. Perform a model change by the following flow. By completing this procedure, it is restored to the state before a model setup and a setup of the outdoor DN code (O.DN) exchanging.
Page 291 Replacement Steps: (1) Turn off the power supply of the outdoor unit and wait at least 5 minutes for the capacitor to discharge. (2) Remove all of the connector and screw terminal ( : 8pcs) which were connected to the Compressor P.C. board (Remove the connectors by pulling the connector body.
Page 292 (8) Screw the Compressor P.C. board to the heat sink by the six screws ( ) that were removed in step (3). If the screws are loose, the semiconductors will generate heat, and cause it to breakdown. Do not use an electric driver or an air driver. The torque of the screws The semiconductor may receive a damage.
Page 293 (8) Screw the Fan-motor P.C. board to the heat sink by the two screws ( ) that were removed in step (3). If the screws are loose, the semiconductors will generate heat, and cause it to breakdown. Do not use an electric driver or an air driver. The torque of the screws The semiconductor may receive a damage.
Page 294 13-1-7. Noise Filter P.C. Board 2 (MCC-1748) Replacement Procedure 43T6W889: MMY-MUP14A1*/1601*/1801*/2001*/2201/*2401* Subject part Included item: MCC-1748 : 1pcs Spacer : 4pcs Spacer : 2pcs Bush : 6pcs Noise Filter P.C. board Replacement Steps: (43T6W889) Turn off the power supply of the outdoor Push unit and wait at least 5 minutes for the Lock pin...
Page 295 14. EXPLODED DIAGRAM/PARTS LIST 14-1. Outdoor unit (8, 10, 12, 14HP) MMY-MUP0801* MMY-MUP1001* MMY-MUP1201* MMY-MUP1401* 056 057 076 075 - 295 -...
Page 296 For MMY-MUP0801*, MMY-MUP1001*, MMY-MUP1201*, MMY-MUP1401* model 031 034 049 048 027 028 030 033 029 032 059 062 - 296 -...
Page 297 Outdoor Unit (8, 10, 12, 14HP) Model: MMY-MUP0801*, MUP1001*, MUP1201*, MUP1401* Fan motor PMV1 Main heat exchanger Sub heat exchanger PMV2 4-way valve High-pressure sensor Inner diameter φ1.0 × 1400mm Low-pressure φ70 (5.25 turns) Accumulator SV3D Inner diameter φ1.0 × 500mm SV41 φ50 (2.25 turns) Inner diameter...
Page 298 14-2. Outdoor unit (14A, 16, 18, 20HP) MMY-MUP14A1* MMY-MUP1601* MMY-MUP1801* MMY-MUP2001* FAN 1 FAN 2 056 057 076 075 - 298 -...
Page 299 For MMY-MUP14A1*, MMY-MUP1601*, MMY-MUP1801*, MMY-MUP2001* model Upper 038 036 063 051 045 Lower 047 045 051 044 032 029 027 028 030 035 030 033 01 6 092 05 9 062 031 034 - 299 -...
Page 300 Outdoor Unit (14A,16, 18, 20HP) Model: MMY-MUP14A1*, MUP1601*, MUP1801*, MUP2001* Fan motor Fan motor PMV1 Right side Left side Main heat exchanger Main heat exchanger Left side Right side Sub heat exchanger PMV2 Sub heat exchanger PMV3 4-way valve Check Valve High-pressure sensor Inner diameter φ1.0...
Page 301 14-3. Outdoor unit (22, 24HP) MMY-MUP2201* MMY-MUP2401* FAN 1 FAN 2 056 057 076 075 - 301 -...
Page 302 For MMY-MUP2201*, MMY-MUP2401* model 027 028 046 048 COMP 1 COMP 2 031 034 059 062 059 062 - 302 -...
Page 303 Outdoor Unit (22, 24HP) Model: MMY-MUP2201*, MUP2401* Fan motor Fan motor PMV1 Right side Left side Main heat exchanger Main heat exchanger Left side Right side Sub heat exchanger PMV2 Sub heat exchanger PMV3 4-way valve High-pressure Inner diameter sensor φ1.0 ×...
Page 304 Q'ty/Set　MMY-MUP Ref. No. Part No. Description 0801* 1001* 1201* 1401* 14A1* 1601* 1801* 2001* 2201* 2401* 43T20341 FAN,PROPELLER, PS741-T 43T20359 FAN,PROPELLER, PF581-T 43T19374 BELLMOUTH 43T19375 BELLMOUTH 43T19376 BELL MOUTH, COVER 43T19377 BELL MOUTH, COVER 43T20360 MOTOR, FAN, ICF-620A1000-1 43T00817 BESE, MOTOR 43T00811 CABINET, SIDE, UP 43T00812 CABIBET, FRONT, UP 43T00819 CABIBET, FRONT, UP...
Page 305 43T49355 RUBBER, SUPPORTER, PIPE, DIA 6.4 43T49376 RUBBER, SUPPORTER, PIPE, DIA.9.5 - DIA.28.6 43T49347 RUBBER, SUPPORTER, PIPE, DIA.6.4 - DIA.28.6 43T49377 RUBBER, SUPPORTER, PIPE, DIA.6.4 - DIA.28.6 43T01333 MARK, TOSHIBA 43T19380 HOLDER, SENSOR, TO 43T39351 NUT, FLANGE 43T39350 WASHER 43T49357 RUBBER, CUSHION 43T49387 RUBBER 43T47375 TUBE, CAPILLARY, BYPASS, 1.0×2.0×2000L...
Page 306 Inverter Assembly Model: MMY-MUP0801*, 1001*, 1201*, 1401* The Interface P.C.B.sub-assembly CN101 CN800 IC300 CN801 CN02 IC800 SW800 CN301 CN01 CN400 CN102 SW04 SW05 SW06 CN21 CN22 CN23 SW01 SW02 SW03 T101 SW104 SW105 SW106 SW100 CN04 CN03 T601 REACTOR DB01 CN02 CN01 NO POWER...
Page 307 Inverter Assembly Model : MMY-MUP14A1*, 1601*, 1801*, 2001* The Interface P.C.B.sub-assembly CN101 CN800 IC300 CN801 CN02 IC800 SW800 CN301 CN01 CN400 IC800 CN02 CN24 SW800 CN01 CN102 SW04 SW05 SW06 CN21 CN22 CN23 SW01 SW02 SW03 T101 SW104 SW105 SW106 CN15 SW100 CN04...
Page 308 Inverter Assembly Model : MMY-MUP2201*, 2401* The Interface P.C.B.sub-assembly CN101 CN800 IC300 CN801 CN02 IC800 SW800 CN301 CN01 CN800 IC300 CN101 CN400 CN801 CN02 IC800 SW800 CN24 CN301 CN01 CN102 SW04 SW05 SW06 CN04 T601 CN03 REACTOR CN21 CN22 CN23 DB01 CN02 SW01...

This manual is also suitable for:

Mmy-mup1001ht8jp Mmy-mup1201ht8jp Mmy-mup1401ht8jp Mmy-mup14a1ht8jp Mmy-mup1601ht8jp Mmy-mup1801ht8jp ... Show all

Toshiba MMY-MUP0801HT8JP Service Manual

Wiring Diagrams

Parts Rating

Outdoor Unit (50Hz Model: MMY-MUP***1HT8*)

Outdoor Unit (60Hz Model: MMY-MUP***1HT7*)

Outdoor Unit (50Hz Model: MMY-MUP***1HT8P-A)

Winding Resistance of Outdoor Unit Main Parts

Inverter Assembly

Parts Layout in Inverter Assembly

Refrigerant Piping Schematic Drawing

Combined Refrigerant Piping System Schematic Diagrams

Refrigerant Flow (Heating)

Refrigerant Flow (Individual Defrost)

Refrigerant Flow (Reclaim)

5

Indoor Unit

Applied Control and Functions

Test Operation of Indoor Unit

Method to Set Indoor Unit Function DN Code

Method to Set Outdoor Unit Function Code No. (O.DN )

Applied Control of Indoor Unit

Applied Control of Outdoor Unit

Notice Code

System Cooperation Defrosting

Night Operation (Sound Reduction Control)

Test Operation

Procedure and Summary of Test Operation

Check Items before Test Operation (before Powering-On)

Check at Main Power-On

Troubleshooting in Test Operation

Test Operation Check

Service Support Function

Wave Tool Advance for SMMS-U Series

Troubleshooting

Overview

Troubleshooting Method

Troubleshooting Based on Information Displayed on Remote Controller

Check Codes Displayed on Remote Controller and SMMS-U Outdoor Unit (7-Segment Display on I/F Board) and Locations to be Checked

Diagnosis Procedure for each Check Code

7-Segment Display Function

Oil Level Judgment Display

SMMS-U Outdoor Interface P.C. Board Function Setting Change Table

Leakage/Clogging of Refrigerating Cycle Circuit

Sensor Characteristics

Backup Operation (Emergency Operation)

Note for Backup Operation

Compressor Backup Operation Setting

Outdoor Unit Backup Operation Setting

Cooling-Season Outdoor Unit Backup Operation Setting

Outdoor Unit Automatic Backup Operation Outline

Outdoor Unit Refrigerant Recovery Method

Refrigerant Recovery from Troubled Outdoor Unit (Reclaim)

Work Procedure after Repair

Outdoor Unit (14A, 16, 18, 20HP)

Quick Links

Troubleshooting

Related Manuals for Toshiba MMY-MUP0801HT8JP

Summary of Contents for Toshiba MMY-MUP0801HT8JP

This manual is also suitable for:

Table of Contents