Page 1 FILE NO. SVM-23032 AIR CONDITIONER (MULTI TYPE) SERVICE MANUAL < Super Modular Multi System-u SMMS-u > Outdoor MMY-MUP0721HT9P-UL MMY-MUP0961HT9P-UL MMY-MUP1201HT9P-UL MMY-MUP1441HT9P-UL MMY-MUP1681HT9P-UL MMY-MUP072H1HT9PUL MMY-MUP096H1HT9PUL MMY-MUP120H1HT9PUL...
Page 2: Table Of Contents
CONTENTS SAFETY CAUTION ..................... REFRIGERANT (R410A).................... 1. WIRING DIAGRAMS ....................2. PARTS RATING ...................... 2- 1. Outdoor Unit (MMY-MUP***1HT9P-UL*) ................2- 1-1. Winding resistance of outdoor unit main parts ............ 2- 2. Inverter Assembly ......................2- 3. Parts Layout in Outdoor Unit .................... 2- 4.
Page 3 7- 5. Troubleshooting in Test Operation .................. 7- 5-1. A Check Code is Displayed on the Remote Controller ........7- 5-2. No Remote Controller Response with Check Code..........7- 5-3. No Remote Controller Response without Check Code ........7- 5-4. Connected Indoor/Outdoor Unit Quantity Check ..........7- 6.
Page 4 11. REPLACING COMPRESSORS ................11- 1. Compressor Replacement Procedure (Outline)............11- 2. Replacement of Compressors ..................11- 3. Check Procedure to Search Cause of Compressor Oil Shortage ....... 12. OUTDOOR UNIT PARTS REPLACEMENT METHODS ........13. P.C. BOARD REPLACEMENT PROCEDURES ........... 13- 1.
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-UL (Made in Thailand model) SVM-22074 <Compact 4-Way Cassette Type> MMU-UP***1MH-UL (Made in Japan model) A10-2209 <1-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.
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Page 9 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 10 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 11 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 12 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 13 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 14 Carrying in the outdoor unit &$87,21 +DQGOH WKH RXWGRRU XQLW FDUHIXOO\ REVHUYLQJ WKH IROORZLQJ LWHPV ‡ :KHQ XVLQJ D IRUNOLIW WUXFN RU RWKHU PDFKLQHU\ IRU ORDGLQJ XQORDGLQJ LQ WUDQVSRUWDWLRQ LQVHUW WKH IRUN RI WKH IRUNOLIW WUXFN LQWR WKH UHFWDQJXODU KROHV IRU KDQGOLQJ DV VKRZQ EHORZ ‡ :KHQ OLIWLQJ XS WKH XQLW LQVHUW D URSH DEOH WR EHDU WKH XQLW¶V ZHLJKW LQWR WKH UHFWDQJXODU KROHV IRU KDQGOLQJ DQG WLH WKH XQLW IURP VLGHV $SSO\ SDGGLQJ LQ SRVLWLRQV ZKHUH WKH URSH FRPHV LQWR FRQWDFW ZLWK WKH RXWGRRU XQLW VR WKDW QR GDPDJH LV FDXVHG WR WKH RXWHU VXUIDFH RI WKH RXWGRRU XQLW 7KHUH DUH UHLQIRUFLQJ SODWHV RQ WKH VLGH VXUIDFHV VR WKH URSH FDQQRW EH SDVVHG WKURXJK Incorrect Correct Incorrect Plaster Rope board Rectangular holes for handling Side Incorrect Front/Back Correct Rectangular Reinforcing holes for Fork of the plate lifting forklift truck...
Page 15 51.4"(1305) 51.4"(1305) 39.0"(990) 50.8"(1290) 50.8"(1290) 208-230V Standard Weight Model type (in (mm)) (in (mm)) (in (mm)) (Lbs (Kg)) MMY-MUP0721HT9P-UL 19.7 (500) 15.7 (400) 26.6 (675) 551.2 (250) MMY-MUP0961HT9P-UL MMY-MUP1201HT9P-UL 25.6 (650) 14.6 (370) 23.8 (605) 760.6 (345) MMY-MUP1441HT9P-UL MMY-MUP1681HT9P-UL 25.6 (650) 14.6 (370)
Page 16 &RXSOLQJ VL]H RI EUD]HG SLSH &RQQHFWHG VHFWLRQ ([WHUQDO VL]H ,QWHUQDO VL]H Connected section Standard Min. External size Internal size outer dia. Min. depth of Thickness Standard outer dia. of connected insertion Oval value (Allowable difference) copper pipe coupling +0.001 +0.0 6.35 1/4"(±0.0012) 6.35(±0.03) 0.25" 6.45 0.28 0.24 0.0024"...
Page 17 Adding refrigerant $IWHU ¿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able 1-1 SMMS-u MMY- MUP***1HT9P-UL Amount of refrigerant 13.2 19.8 charged in factory Table 1-2 SMMS-u High heat MMY- MUP***H1HT9P-UL Amount of refrigerant 19.8 charged in factory When the outdoor unit is charged with refrigerant from the factory, the amount of refrigerant needed for the piping at the sites is not included.
Page 18 Table 2 Compensation amount of refrigerant based on outdoor unit capacity type Table 2-1 SMMS-u Outdoor unit Combination outdoor units Compensation by outdoor unit capacity type capacity type Unit 1 Unit 2 Unit 3 2.20 1.00 2.64 1.20 -0.50 -1.10 0.15 0.33 6.16...
Page 19 Table 4 Additional amount of refrigerant for indoor unit Table 4-1 Additional amount of refrigerant based on indoor unit capacity type Indoor unit capacity type Indoor unit capacity code 15.4 Additional amount of 0.44 0.88 1.32 2.20 refrigerant ※ If the outside air unit type (MMD-UP***1HFPUL) is connected, The additional amount refrigerant for outside air unit type is 0 lbs Table 4-2 Additional amount of refrigerant for 4-Way Cassette type ( MMY-UP***1HPUL) Indoor unit capacity type Indoor unit capacity code...
Page 20: Refrigerant (R410A)
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 21 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 22 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 23: Wiring Diagrams
1.WIRING DIAGRAMS 6, 8 ton Model: MMY-MUP0721HT9P-UL, MMY-MUP0961HT9P-UL, MMY-MUP072H1HT9PUL MCC-1749 MCC-1711 CN01 CN26 CN30 CN31 CN02 CN22 CN21 CN32 CN03 CN28 Mg-CTT CN03 CN11 CN35 (WHI) (BLK) 1 2 3 4 CN103 (WHI) 2 3 4 5 6 MCC-1746 1 2 3 4...
Page 24 10, 12, 14 ton Model: MMY-MUP1201HT9P-UL, MMY-MUP1441HT9P-UL, MMY-MUP1681HT9P-UL MMY-MUP096H1HT9PUL, MMY-MUP120H1HT9PUL MCC-1749 MCC-1711 CN01 CN26 CN30 CN31 CN02 CN22 CN21 CN32 CN03 CN28 CN33 Mg-CTT2 CN03 CN34 CN11 (WHI) CN35 (BLK) 1 2 3 4 YEL BLU CN103 (WHI) 2 3 4 5 6 Mg-CTT1 MCC-1746 1 2 3 4...
Page 25: Parts Rating
2. PARTS RATING 2-1. Outdoor Unit (MMY-MUP***1HT9P-UL) Part name Model Specifications ○ 1 Compressor LA772A3TB-20M Output: 4.05 kW×1 ○ 1 Compressor LA772A3TB-20M Output: 6.24 kW×1 ○ 1 Compressor. LA1201K4FB-10UC Output: 8.00 kW×1 ○ 1 Compressor LA1201K4FB-10UC Output: 9.69 kW×1 ○ 1 Compressor LA1201K4FB-10UC Output: 12.1 kW×1...
Page 26: Winding Resistance Of Outdoor Unit Main Parts
2-1-1. Winding resistance of outdoor unit main parts Checking procedure Part name Compressor Measure and compare each winding resistance by digital tester. (Model : NA772A3TB-21M) Position Resistance value Red – White 0.121 Ω ± 0.006 White – Black Black – Red (all same resistance is ok.) 68°F(20°C) Compressor Measure and compare each winding resistance by digital tester.
Page 27: Inverter Assembly
2-2. Inverter Assembly Part name Model Specifications ○ ○ ○ ○ ○ ○ ○ ○ Power supply terminal block HP-T3015-31-3P-L3S AC600V/100A, 3P － ○ ○ ○ Noise Filter P.C. board (1) MCC-1749 － ○ ○ ○ ○ ○ Noise Filter P.C. board (2) MCC-1749 －...
Page 28: Parts Layout In Outdoor Unit
2-3. Parts Layout in Outdoor Unit 6 ton, 8 ton Model: MMY-MUP0721HT9P-UL MMY-MUP0961HT9P-UL Low pressure sensor High pressure sensor High pressure Check joint (Low pressure) Check joint TO sensor (High pressure) Check joint (Liquid pipe) Compressor Accumulator 10 ton, 12 ton, 14 ton...
Page 29 High heat 6 ton Model: MMY-MUP072H1HT9PUL Low pressure sensor High pressure sensor Accumulator High pressure TO sensor Check joint Check joint Compressor (Liquid pipe) (High pressure) Check joint (Low pressure) - 29 -...
Page 30: Parts Layout In Inverter Assembly
2-4. Parts Layout in Inverter Assembly 6, 8 ton, High heat 6 ton Model: MMY-MUP0721HT9*, MUP0961HT9*, MUP072H1HT9* The Interface P.C. board sub-assembly Interface P.C. board (MCC-1747) Inverter P.C. board for fan Remove the Interface P.C. board sub-assembly (MCC-1734) Thermistor Magnet Contactor Noise Filter P.C.
Page 31 10, 12, 14 ton, High heat 8, 10 ton Model: MMY-MUP1201HT9*, MUP1441HT9*, MUP1681HT9*, MUP096H1HT9*, MUP120H1HT9* Interface P.C. board The Interface P.C. board sub-assembly Inverter P.C. board for fan 1 (MCC-1734) (MCC-1747) Inverter P.C. board for fan 2 Remove the Interface P.C. board sub-assembly (MCC-1734) Magnet Contactor 2 Thermistor 2...
Page 32: Outdoor (Inverter) Print Circuit Board
2-5. Outdoor (Inverter) Print Circuit Board 2-5-1. Interface P.C. board (MCC-1747) PMV1 Output Option Input/ Output PMV4 Output CN300 CN303 PMV2 Output CN301 PMV3 Output CN302 High pressure SW CN305,306 UART communication AC Power IN CN600 CN304 Mg-CTT Detection of power supply CN304 open phase and miswiring CN910...
Page 33: Noise Filter P.c. Board (Mcc-1749)
2-5-2. Noise Filter P.C. board (MCC-1749) 1290W 1COMP 2FAN model 990W 1COMP 1FAN model (10, 12, 14 ton, High heat 8, 10 ton) (6, 8 ton, High heat 6 ton) Power supply Output L3 Power supply output to I/F CN27 CN101 Power supply Output L1 Power supply Output L3...
Page 34: Capacitor P.c. Board (Mcc-1711)
2-5-3. Capacitor P.C. board (MCC-1711) Output CT CN35 Inverter power supply output for FAN PCB CN11 Input DC＋ REACTOR1 CN30 CN31,CN32 REACTOR2(1290W only) CN33,CN34 Input DC+ CN01 (BUS BAR) Input DC- CN03 Input DC- CN03 (BUS BAR) 190mm Power supply output for COMP PCB CN11 Parts No.
Page 35: Inverter P.c. Board For Compressor (Mcc-1746)
2-5-4. Inverter P.C. board for compressor (MCC-1746) Input DC＋ CN21(BUS-BER) INV B output U-phase CN301 INV B output V-phase Inverter power supply input CN302 CN102 INV B output W-phase CN302 Model indification symbol Control power supply output CN102 Input DC- CN31(BUS-BER) CT input CN102...
Page 36: Usb Isolate P.c. Board (Mcc-1754)
2-5-6. USB isolate P.C. board (MCC-1754) screw USB communication to I/F USB connector CN01 CN02 - 36 -...
Page 37: Refrigerant Piping Schematic Drawing
3. REFRIGERANT PIPING SCHEMATIC DRAWING Outdoor unit Standard 6,8ton／High heat 6ton Model: MMY-MUP0721*，MUP0961*，MUP072H1* Fan motor PMV1 Main heat exchanger Sub heat exchanger PMV2 Hot gas heat exchanger SV5B 4-way valve High-pressure sensor Low-pressure sensor Fusible plug Accumulator SV3D SV41 High- pressure switch SV3F...
Page 38 Standard 10,12,14ton／High heat 8,10ton Model: MMY-MUP1201*，MUP1441*，MUP1681*，MUP096H1* ，MUP120H1* Fan motor Fan motor PMV1 Left side Right side Main heat exchanger Main heat exchanger Left side Right side Sub heat exchanger Sub heat exchanger PMV2 Hot gas heat exchanger Hot gas heat exchanger PMV3 SV5B 4-way valve...
Page 39 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 40 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 41: Combined Refrigerant Piping System Schematic Diagrams
4. COMBINED REFRIGERANT PIPING SYSTEM SCHEMATIC DIAGRAMS 4-1. Refrigerant Flow (Cooling) Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) FAN motor FAN motor FAN motor PMV1 PMV1 Main heat exchanger Left side Right side Main heat exchanger Main heat exchanger Sub heat exchanger PMV2 Left side...
Page 42: Refrigerant Flow (Single Defrost)
4-2. Refrigerant Flow (Single Defrost) Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) 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 Hot gas heat exchanger Hot gas heat exchanger SV5B PMV3...
Page 43: Refrigerant Flow (Heating)
4-3. Refrigerant Flow (Heating) Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) FAN motor FAN motor FAN motor PMV1 PMV1 Left side Right side Main heat exchanger Main heat exchanger Main heat exchanger Left side Sub heat exchanger Right side PMV2 PMV2...
Page 44: Refrigerant Flow (Individual Defrost)
4-4. Refrigerant Flow (Individual Defrost) Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) FAN motor FAN motor FAN motor PMV1 PMV1 Right side Left side Main heat exchanger Main heat exchanger Main heat exchanger Sub heat exchanger Left side Right side PMV2 PMV2...
Page 45: 1) Refrigerant Flow (Automatic Emergency Cooling)
4-5-1. (1) Refrigerant Flow (Automatic emergency cooling) Set Up as Temporary Header Unit during Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Emergency Operation Trouble FAN motor FAN motor FAN motor PMV1 PMV1 Right side Main heat exchanger Left side Main heat exchanger Main heat exchanger...
Page 46: 2) Refrigerant Flow (Automatic Emergency Cooling)
4-5-1. (2) Refrigerant Flow (Manual emergency cooling) Set Up as Temporary Header Unit during Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) Emergency Operation Trouble FAN motor FAN motor FAN motor PMV1 PMV1 Right side Main heat exchanger Left side Main heat exchanger Main heat exchanger...
Page 47 4-5-2. (1) Refrigerant Flow (Manual emergency heating) Set Up as Temporary Header Unit during Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) Emergency Operation Trouble FAN motor FAN motor FAN motor PMV1 PMV1 Right side Left side Main heat exchanger Main heat exchanger Main heat exchanger Leakage from PMV:...
Page 48 4-5-2. (1) Refrigerant Flow (Manual emergency heating) Set Up as Temporary Header Unit during Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) Emergency Operation Trouble FAN motor FAN motor FAN motor PMV1 PMV1 Right side Left side Main heat exchanger Main heat exchanger Main heat exchanger Leakage from PMV:...
Page 49: Refrigerant Flow (Reclaim)
4-6. Refrigerant Flow (Reclaim) Trouble Header Unit (MMY-MUP1201*, MUP1441*，MUP1681*，MUP096H1* ，MUP120H1*) Follower Unit (MMY-MUP0721*, MUP0961*, MUP0721H1*) FAN On FAN motor FAN motor FAN motor PMV1 Open PMV1 Right side Left side Main heat exchanger Main heat exchanger Main heat exchanger Sub heat exchanger Left side Right side PMV2...
Page 50: Control Outline
5. CONTROL OUTLINE 5-1. Outdoor Unit Item Description of operation, numerical data, and other information Remarks 1. PMV1, 2, 3 control (PMV 1 and 2, 3) 1. Pulse 1) During air conditioner operation, the pulse count of a PMV1 (pulse motor valve 1) is motor valve (PMV) controlled between 75 pls and 3000 pls, During air conditioner operation, the pulse...
Page 51 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 52 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 53 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 54 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 55 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 56 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 release suppressing the thermostat-OFF due to freezing prevention due to excessive capacity even in Min speed [rps] during cooling small capacity operation. control Control condition Perform when all the following conditions are met.
Page 57: 1) Refrigerant Flow (Automatic Emergency Heating)
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 58: 2) Refrigerant Flow (Automatic Emergency Heating)
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 59: Indoor Unit
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 60 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 36˚F(+2C˚) 39˚F(+4C˚) 43˚F(+6C˚) 32˚F(+0C˚) Setup temp.
Page 61 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 62 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 63 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 64 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 65 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 66 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 67 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 68 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 69 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 70: Applied Control And Functions
6. APPLIED CONTROL AND FUNCTIONS 6-1. 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 71 When switching from the wired remote controller (RBC-AWSU**) Basic procedure Be sure to stop the air conditioner before making settings. (Change the setup while the air conditioner is not working.) Push the [ Menu] button to display the menu screen Push and hold the [ Menu] button and the [...
Page 72 Refer to the Installation Manual supplied with the outdoor unit or service manual for details about Code(DN) and Data. 0000 0001 Push the [ Menu] button to set the other Code(DN) and Data.After "Continue?" is displayed on the screen, push the "...
Page 73 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 ・208-230V Model name O.DN [003] Model name O.DN [003] Undefined 0000 MMY-UP072H1HT9P-UL...
Page 74 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 75: Applied Control Of Outdoor Unit
6-2. 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 76: Priority Operation Mode Setting
6-2-2. 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 77 CODE No.(DN) setting ■ Wired remote controller (RBC-AWSU**) Perform the advanced settings for the air conditioner. Carry out the setting operation while the indoor unit is stopped.(Turn off the air conditioning unit before starting the setting operation.) Display example of Field setting menu (2/3) AWSU52* 6.Setting louver position...
Page 78: Applied Control Of Outdoor Unit
6-2-3. 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 79 Optional application control board mounting position. Power peak-cut control PC board(TCB-PCD4UL) Wire clip Power peak-cut control PC boad Cable strap Cable strap Inverter case type B Inverter case type A (MMY-MUP0721*, 0961*, 072H1*) (MMY-MUP1201*, 1441*, 1681*, 096H1*, 120H1*) Quantity of cable straps : 2 Quantity of cable straps : 3 Operation mode selection PC board(TCB-PCMO4UL) Wire clip...
Page 80 6-2-3-1. 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 81 (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 82 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 83 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 84 6-2-3-3. 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 85 6-2-3-5. 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 86 6-2-3-6. 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 87 6-2-3-7. 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 88 6-2-3-8. 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 89 6-2-3-9. 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 90: Notice Code
6-3. 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 91 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 92: System Cooperation Defrosting
6-4. 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 93 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) Do not set the same system addresses for each system that link defrosting. For the system address, please refer to "7-4-3.
Page 94 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 95: Night Operation (Sound Reduction Control)
6-5. Night operation (Sound reduction control) ■ Overview The 'Night operation' function of RBC-AWSU** 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 96 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 97: Test Operation
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 98: Check Items Before Test Operation (Before Powering-On)
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 99 (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) U3 U4 U3 U4 U3 U4 U3 U4 Other Refrigerant Outdoor Unit...
Page 100 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? Is the gauge of the Header unit (A)
Page 101 • Check the additional amount of refrigerant. Checklist 2 Calculate total additional amount refrigerant from the compensation amount of refrigerant according to total outdoor unit capacity (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 capacity (C), and the total compensation amount of refrigerant according to the system diversity (D) Additional amount...
Page 102 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 the Standard amount Total pipe length on Additional amount of refrigerant liquid side of refrigerant...
Page 103 <According to indoor unit capacity for 4-Way Cassette type> MMY-UP***1HPUL Indoor unit Capacity code Corrective amount Number of connected Corrective amount of refrigerant capacity type of refrigerant indoor units on each indoor unit capacity Number 0.44 15.4 0.88 1.32 <According to indoor unit capacity for Medium Static Conceald Duct Type> MMY-UP***1BHPUL Indoor unit Capacity code...
Page 104 Next, refer to the following table below, calculate the corrective amount of refrigerant according to system diversity (D) Corrective amount of refrigerant varies according to the system diversity (D) Diversity D(%) Corrective amount of refrigerant (Ibs) 50% ≤ D < 60% -5.51 60% ≤...
Page 105: Check At Main Power-On
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 106 <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 107: Address Setup
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 108: Address Setup Procedure
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-MUP1201,MUP1441,MUP1681,MUP096H1, and MUP120H1.
Page 109 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 110 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 Line (system)
Page 111 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 Follower unit Header unit Follower unit Header unit P.C. board default SW101 Bit1 (No se�ng...
Page 112 4. Address setup Automatic address setup Only if the address of all indoor units in the same system is not set, the following address will be set automatically. • Refrigerant line (system) address (Indoor unit code[12]) ... The line address of the indoor units are automatically set to the same number as the line address set in both SW101 and 102 of the outdoor Header unit I/F board.
Page 113 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 114 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 115 <RBC-AWSU**> Push the [ Menu] button to display the menu screen Push and hold the [ Menu] button and the [ ] button at the same time to display the "Field setting menu". →Push and hold the buttons for more than 4 seconds Push the [ ] / [...
Page 116 ▼ (Indoor address) Push the [ ] / [ ] button to select Code No. Change Code No. to 13 with [ ] / [ ] button. Push the [ ] / [ ] button to select Data. Select the indoor unit address with [ ] / [ ] button.
Page 117 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) CODE No.
Page 118 Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To see the indoor unit address of an indoor unit which you know the position of When the unit is individual (the indoor unit is paired with a wired remote controller one-to- one), or it is a group-controlled one.
Page 119 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 120 Using wired remote controller (RBC-AMT* etc.), all the indoor units addresses in the same system are changed. (The method is available when the addresses have already been set automatically.) The method is available when the addresses have already been set. The indoor address of other refrigerant systems cannot be changed.
Page 121 Procedure to setup address 65 to 128 from the remote controller Under TCC-Link settings (factory shipping settings), setting addresses from 65 and above are not available from the remote controller. Setting the indoor address or the zone address to 65 to 128 must be done under TU2C-Link settings, which can be performed by the procedures shown below.
Page 122 Method 2 (Setting the address manually from the remote controller) Follow the procedure below if setting the indoor unit address manually from the remote controller is desired due to the indoor address not being set (factory default) and automatic address setting not being possible for reasons such as the outdoor unit installation not being installed.
Page 123 <Setting the indoor terminal resistance manually (if the farthest room is known)> 12) Set the Indoor Unit Function Code I.DN [1FC] to "0001" (indoor terminal resistance ON). 13) After installing the outdoor unit, set the Outdoor Unit Function Code O.DN [82] to "0003" (TU2C-Link) for the header outdoor unit and the follower outdoor unit.
Page 124 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 125 Communication setting If all outdoor units, indoor units, remote controllers are U series models, you can change to TU2C-LINK communication by following the steps below. (The factory default setting is TCC-LINK communication) CAUTION • Be sure to complete the address setting before communication setting. •...
Page 126 Procedure to set up the communication method manually The communication method and the terminal resistance settings can be changed by setting the outdoor DN code (O.DN) and the Indoor Unit Function Code (I.DN). (See also 6-4. Method to set Outdoor Unit Function Code No. (O.DN) for operation method.) <Procedure to set the TU2C-Link communication setting>...
Page 127 Procedure to clear the communication method (restoring the factory default [TCC-Link communication settings]) • This is a function in which the communication method setting for all the outdoor units and indoor units (every outdoor unit connected to the Uc line and every indoor unit connected to the Uv line) will reset to the TCC- Link communication settings.
Page 128 In the case of an increase in address-undefined indoor units (extension, etc.) To set up the indoor address of a unit with an address that is undefined due to the extension of indoor units or replacement of PC board, etc., follow the methods below. 1.
Page 129 3. Communication setting (Auto 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 130 Procedures for adding an indoor unit with communication method and address already set In cases of adding a new indoor unit with the TU2C-Link setup or address setup already completed due to relocation etc., perform the setup 1) to 3) below. 1) Communication method •...
Page 131 (Reference) Method to clear when communication method settings, address set / unset are coexisting • If units with different communication method settings or units with set / unset addresses are coexisting, It can be changed back to the factory default settings by performing "Clear communication method" – "Clear all addresses (line, indoor, and group addresses) at once".
Page 132 (Reference) Operations for communication method automatic setup / communication method clear, automatic address setting / address batch clear (When the outdoor unit, indoor unit, and the remote controller are all U series) - 132 -...
Page 133: Check After Address Setup When Central Control System Is Connected
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 134: Troubleshooting In Test Operation
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 135: No Remote Controller Response With Check Code
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 136 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 137 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 138: Test Operation (Test Run) Check
7-6. Test Operation (test run) 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...
Page 139: Cooling/Heating Test Operation Check
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 140 <RBC-AWSU**> Push the [ Menu] button to display the menu screen Push and hold the [ Menu] button and the [ ] button at the same time to display the "Field setting menu". →Push and hold the buttons for more than 4 seconds Push the [ ] / [...
Page 141 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: 62.6°F(17°C) 64.4°F(18°C) 62.6°F(17°C) minutes until the remote controller...
Page 142 (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 143 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 46.4°F(8°C) or more, it is normal. (2) Heating operation After operating for a minimum of 30 minutes in “HEAT”...
Page 144: Service Support Function
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 145 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 146: Function To Start/Stop (On/Off) Indoor Unit From Outdoor Unit
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 147 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 148 (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 149 (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 150 (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 151 (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 152 (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 153: Check Code Clearing Function
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 154 <RBC-AWSU**> ▼ Clearing a check code of the outdoor unit There is no such function in the remote controller. Push the [ Menu] button to display the menu screen Push and hold the [ Menu] button and the [ ] button at the same time to display the "Field setting menu".
Page 155 (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 156: Remote Controller Distinction Function
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 157: Pulse Motor Valve (Pmv) Forced Open/Close Function In Indoor Unit
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 158: Pulse Motor Valve (Pmv) Forced Open/Close Function And Solenoid Valve
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 159 [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) Pushing the push-switch [SW04] for one second sets the selected PMV# to full-open.
Page 160: Fan Operation Check In Outdoor Unit
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 161: Abnormal Outdoor Unit Discrimination Method By Fan Operating Function
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 162: Manual Adjustment Function Of Outside Temperature (To) Sensor
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 163: Refrigerant Leakage Detection
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 164: Monitor Function Of Remote Controller Switch
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 165 Display Code No. Unit format Room temperature (Use to control) °C e l l °C [0027]=27°C [0080]=80°F °F l i o °F l i o °F l i o °F Indoor discharge air temperature (TF) *1 °F Indoor fan motor number of revolutions [1000]=1000rpm t l i Suction exchanger (TSA) *1...
Page 166: Wave Tool Advance For Smms-U Series
After confirmation, download/install the Wave Tool Advance Application (WTA App.) and USER GUIDE. Be sure to read the USER GUIDE before the use of this application. <Wave Tool Advance Support URL> https://www.toshiba-carrier.co.jp/global/appli/smms_wave_tool_advance/index.htm Notice WTA App. is not supported SMMS-e series. Please use the "SMMS Wave Tool" when using the SMMS-e series.
Page 167: Confirmation For Nfc Tag Communication
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 168: Troubleshooting
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 169: Troubleshooting Method
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 170 (Check code detected by remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Description of Check code Typical fault site Remote control Operation Timer Ready Sub-code Flash No master remote control, Signals cannot be received from indoor unit; –...
Page 171 List of Check Codes (Outdoor Unit) (Check code detected by outdoor interface - typical examples) If "HELLO" is displayed on the outdoor 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 172 Check code Display of receiving unit Central Indicator light block Outdoor 7-segment display Typical problem site Description of Check code control or main remote Operation Timer Ready Sub-code Flash controller display 01: TS1 sensor Outdoor suction • Outdoor suction temperature sensor •...
Page 173 Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block Description of Check code Typical problem site 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 174 (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 Check code control or main remote Operation Timer Ready Sub-code controller Flash...
Page 175: Troubleshooting Based On Information Displayed On Remote Controller
8-3. Troubleshooting based on information displayed on remote controller When a trouble occurs in the air conditioner, the check code and the indoor unit number flash on the display of the remote controller. * The check code is only displayed during the operation.
Page 176 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 177 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 178 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 179: Check Codes List
8-4. Check Codes list For other types of outdoor units, refer to their own service manuals. Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Central Central control Continued Central control device is •...
Page 180 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code No. of indoor Dropping out of All stop Condition 1 • Check power supply to units from indoor unit All indoor unit initially indoor unit.
Page 181 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Remote Duplicated Stop of In two remote controller • Check remote controller controller master remote corresponding configuration (including settings. controller unit wireless), both controllers...
Page 182 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Outdooroutdoor All stop Signal cannot be transmitted • Check power supply to communication to other outdoor units for at outdoor units.
Page 183 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Indoor unit Indoor TCJ Stop of Sensor resistance is infinity • Check connection of TCJ sensor trouble corresponding or zero (open/short circuit). sensor connector and unit wiring.
Page 184 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Indoor unit Indoor TF Stop of Sensor resistance is infinity • Check connection of TF sensor trouble corresponding or zero (open/short circuit). sensor connector and unit wiring.
Page 185 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code 1∗: Compressor Compressor Compressor All stop Inverter current detection • Check power supply 1 side P.C. board breakdown circuit detects overcurrent voltage.
Page 186 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code 01: TK1 sensor Trouble in All stop Sensor resistance is infinity • Check connection of TK1 trouble temperature or zero (open/short circuit). sensor connector.
Page 187 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Duplicated All stop More than one indoor units • Check display on priority priority indoor have been set up as priority indoor unit.
Page 188 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Detected indoor Indoor unit Indoor external Stop of • Indoor unit has been shut When external device is address interlock corresponding down due to external...
Page 189 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code 1∗: Compressor Compressor Heat sink All stop Temperature sensor built • Check outdoor fan system 1 side P.C. board overheating into IPM (TH) is overheated.
Page 190 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Outdoor liquid All stop <During cooling operation> • Check full-close operation backflow When system is in cooling of outdoor PMV (1, 2, 3, 4). detection operation, high pressure is •...
Page 191 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) condition(s) Controller Check detection Sub-code code Activation of All stop <During cooling operation> • Check for failure in Pd high-pressure Pd sensor detects pressure pressure sensor. protection equal to or greater than •...
Page 192 ▼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. (3) Turn on the power supply and start cooling or heating operation.
Page 193 ▼How to Check Resistance of Compressor Winding (1) Turn off the power supply. (2) Remove compressor leads from the compressor P.C. board. (Be sure to remove all the leads.) (3) With each compressor, check the phase-to-phase winding resistances and winding-to-outdoor cabinet resistance using a multimeter.
Page 194: Diagnosis Procedure For Each Check Code
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Page 227: 7-Segment Display Function
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 228 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 229 (1) Display of System Information (Displayed on Header Outdoor Unit Only) SW01 SW02 SW03 Display detail − − System capacity […6.0t]~[40.0t]: 6 to 40 ton No. of outdoor units A […1]~[…3]: 1 to 3 B […P] No. of indoor units connected / No. (1) [...
Page 230 (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 231 (3) Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit) Display detail SW01 SW02 SW03 Pd pressure data Pd pressure (psi) is displayed in decimal format. ∗. ∗ ∗ (psi: Approx. 14 times magnitude of kg/cm P d. ∗. ∗ ∗ Ps pressure data P s.
Page 232 (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 233 (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 ton capacity B ...
Page 234: Oil Level Judgment Display
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 235: Smms-U Outdoor Interface P.c. Board Function Setting Change Table
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 236 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 SW105 SW106 1 2 3 4 1 2 3 4 SW100 SW100 - 236 -...
Page 237: Leakage/Clogging Of Refrigerating Cycle Circuit
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-MUP0721*, MUP0961*, MUP072H1*) Clogging Unit generating Location of Part Problem check code Detected problem and check code Symptom (Refer to next page) Outdoor PMV1, 2 Corresponding unit...
Page 238 Outdoor Unit (Standard 6,8ton / High heat 6ton) Model: MMY-MUP0721*, MUP0961*, MUP072H1* - 238 -...
Page 239 List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MUP1201*, MUP1441*, MUP096H1*, MUP120H1*) 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 240 Outdoor Unit (Standard 10,12,14ton / High heat 8,10ton) Model: MMY-MUP1201*, MUP1441*, MUP1681*, MUP096H1*, MUP120H1* - 240 -...
Page 241: Sensor Characteristics
8-10. Sensor Characteristics Outdoor Unit Temperature sensor characteristics Outdoor TS1, TS3, TE1, TE2, TE3, TL1, TL2, TL3 and TO sensors Temperature [°F(°C)] Resistance [kΩ] -4(-20) 101.7 5(-15) 76.3 14(-10) 57.7 23(-5) 44.0 32(0) Resistance 33.8 [kΩ] 41(5) 26.1 (50°F(10°C) 50(10) or above) 20.4 Resistance...
Page 242 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 243 Indoor TC1 sensor Temperature [°F(°C)] Resistance [kΩ] -4(-20) 98.3 5(-15) 73.7 14(-10) 55.8 23(-5) 42.6 32(0) 32.8 Resistance Resistance 41(5) [kΩ] [kΩ] 25.5 (50°F(10°C) (50°F(10°C) 50(10) or above) or above) 20.0 59(15) 15.7 68(20) 12.5 77(25) 10.0 86(30) 95(35) 104(40) 113(45) 122(50) 131(55)
Page 244: Pressure Sensor Output Check
0 to 602 psi (0.5 to 4.73 V output for 0 to 602 psi) 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 VOLT VOLT VOLT...
Page 245 Outdoor Unit PS sensor characteristics 0 to 325 psi (0.5 to 5V output for 0 to 325 psi) 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 246: Backup Operation (Emergency Operation)
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 247: Compressor Backup Operation Setting
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-MUP0721*, MMY-MUP0961*, MMY-MUP1201*, MMY-MUP1441*, MMY-MUP168* MMY-MUP072H1*, MMY-MUP096H1*, MMY-MUP120H1* because only one compressor is installed in these models.
Page 248: Outdoor Unit Backup Operation Setting
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 249 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.) Setup of failed follower outdoor unit Interface P.C. board of header unit SW101 SW102 SW103...
Page 250 (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 251: Unit)
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 252 (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 253: Cooling-Season Outdoor Unit Backup Operation Setting
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 254: Outdoor Unit Automatic Backup Operation Outline
9-5. Outdoor Unit Automatic Backup Operation Outline (available only for TU2C-LINK) 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 check codes occur, the automatic backup operation function allows continuous operation.
Page 255: Outdoor Unit Refrigerant Recovery Method
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 256 (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 push SW05 on the interface P.C. board. (5) Approx.
Page 257: Refrigerant Recovery Procedure B
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 258: How To Operate System While Troubled Outdoor Unit Being Repaired
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 259: Work Procedure After Repair
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 260: Replacing Compressors
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 261: Replacement Of Compressors
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 262 Model: MMY-MUP1201*,1441*,1681*,096H1*,120H1* For Standard 10,12,14 ton, High heat 8,10 ton [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 [gal] = (Weight of compressor as it was dismantled (lbs) - 93.9Ibs) x 0.1249 (Specific volume of oil: 0.1249 [gal/Ibs]) * The weight of the compressor without oil inside is 93.9Ibs.
Page 263 <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 1.84 ft*Ibs. • The tightening torque of the hexagonal bolts, used to mount the compressor, is 14.46 ft*Ibs. •...
Page 264: Check Procedure To Search Cause Of Compressor Oil Shortage
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 265 <MMY-MUP0721*,0961* and 072H1*> 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 266 <MMY-MUP1201*,1441*,1681*,096H1*,120H1*> 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 267: Outdoor Unit Parts Replacement Methods
12. OUTDOOR UNIT PARTS REPLACEMENT METHODS Part Work procedure Remarks Cabinet WARNING NFC holder Insert each NFC holder Wear a pair of gloves. claw of NFC holder into Otherwise, you will risk an injury involving a replacement each squre hole part or some other object.
Page 268 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 269 Part Work procedure Remarks WARNING Heat Discharge cabinet M5 x 0.4" (10mm), 8 pcs exchanger Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. < 6ton, 8ton > 1. Detachment 1) Remove No.
Page 270 Part Work procedure Remarks WARNING Heat 4 x 0.55" (14mm), 2 pcs exchanger Wear a pair of gloves. Discharge cabinet Otherwise, you will risk an injury involving a replacement M5 x 0.4" (10mm), 12 pcs part or some other object. <...
Page 271 Part Work procedure Remarks WARNING Heat exchanger Wear a pair of gloves. Discharge cabinet Otherwise, you will risk an injury involving a replacement M5 x 0.4" (10mm), 3 pcs part or some other object. Fix plate M5 x 0.4" (10mm), 2 pcs <...
Page 272 Part Work procedure Remarks Heat 3) Cut the pipes at the heat exchanger (Fig.21, Fig.22, Fig.23 exchanger < 10ton, 12ton, 14ton, 16ton > < 6ton, 8ton > < High heat 8ton, 10ton > (1) Header pipe at the gas side (1) Header pipe at the gas side (Main heat exchanger) (Main heat exchanger)
Page 273 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. 1. Detachment 5) Screw 1) Stop the air conditioner operation, and turn off the circuit breaker.
Page 274 Part Work procedure Remarks 2. Attachment 5) Fixing screws for the Inverter box (6 pcs). assembly (Equal to 6-16 ton) 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.
Page 275 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 276 Part Work procedure Remarks WARNING Reactor 3) Reactor box assembly Wear a pair of gloves. (6,8 ton) 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 277 Part Work procedure Remarks Reactor WARNING 4) Reactor box assembly Wear a pair of gloves. (High heat Otherwise, you will risk an injury involving a replacement 6 ton) part or some other object. 1. Detachment 1) Stop the air conditioner operation, and turn off the 3) Fix plate circuit breaker.
Page 278 Part Work procedure Remarks WARNING Reactor assembly 3) Fixed plate of reactor box Wear a pair of gloves. (10-16 ton) 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 Compressor Wear a pair of gloves. <6,8 ton> 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 280 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 281 Part Work procedure Remarks WARNING 4-way <6, 8ton> valve - 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 282 Part Work procedure Remarks WARNING Accumulator - detachment/ Wear a pair of gloves. attachment Otherwise, you will risk an injury involving a replacement <6,8 ton> 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 283 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, <10 to 16 ton> or move them away from parts to be brazed to prevent them from being fired while brazing.
Page 284: Board Replacement Procedures
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 ― 43T60440 Power supply terminal block TERMINAL (100A) AC600V/100A, 3P ― 43TN9876 Noise Filter P.C.
Page 285: Configuration Of Inverter Assembly
13-1-2. Configuration of inverter assembly MMY-MUP0721HT9* MMY-MUP0961HT9* MMY-MUP072H1HT9* Interface P.C. board (MCC-1747) The Interface P.C. board sub-assembly Inverter P.C. board for fan (MCC-1734) Remove the Interface P.C. board sub-assembly Thermistor Magnet Contactor Noise Filter P.C. board (1) (MCC-1749) Line filter Communication terminal block Power supply terminal block Capacitor P.C.
Page 286 MMY-MUP1201HT9* MMY-MUP1441HT9* MMY-MUP1681HT9* MMY-MUP096H1HT9* MMY-MUP120H1HT9* Interface P.C. board (MCC-1747) The Interface P.C. board sub-assembly Inverter P.C. board for fan 1 (MCC-1734) Inverter P.C. board for fan 2 Remove the Interface P.C. board sub-assembly (MCC-1734) Thermistor Magnet Contactor Noise Filter P.C. board (2) (MCC-1749) Line filter Communication terminal block...
Page 287: Interface P.c. Board (Mcc-1747) Replacement Procedure
13-1-3. Interface P.C. Board (MCC-1747) Replacement Procedure Target model 43TN9879: ALL models This Interface service P.C. board is commonly installed in different models. After replacing the service board, Please change the model. Included items: ①MCC-1747 : 1pcs ②Spacer : 4pcs ③Spacer : 2pcs ④Support : 1pcs ⑤Bush : 3pcs...
Page 288 (13) “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 289 Appendix 1 Data backup 1) The Outdoor DN code (O.DN) data that includes the model settings from the interface P.C. board will automatically be backed up to the Inverter P.C. board for Compressor and Inverter P.C. board for fan. Data backup Interface P.C.
Page 290 Outdoor Unit Function Code (O.DN) [003] manually according to the model name of the outdoor unit. Normal operations may not be available if the settings are different from those before replacing. Model name O.DN [003] 0000 Undefined MMY-MUP0721HT9P-UL 0001 MMY-MUP0961HT9P-UL 0002 MMY-MUP1201HT9P-UL 0003...
Page 291: Compressor P.c. Board (Mcc-1746) Replacement Procedure
13-1-4. Compressor P.C. Board (MCC-1746) Replacement Procedure Target model 43TN9883: MMY-MUP0721HT9*/0961HT9*/072H1HT9* 43TN9884: MMY-MUP1201HT9*/1441HT9*/1681HT9*/096H1HT9*/120H1HT9* This board is commonly installed in different models. Set the DIP switch (SW800) settings of the service board to match as before replacement. Included items: ① ② Spacer : 4pcs ③...
Page 292 (5) Remove 5 screws(⑦：4pcs(M4), ⑧：1pcs(M3) ). (6) Keep the removed screws as they will be reused. (7) Remove the P.C. board from the 4 spacers (②) by round-nose pliers. Set the DIP switch (SW800) settings of the service board to match as before replacement. (9) If spacers (②) are damaged, replace it and attach collars(④) and bushes(③) to the service P.C.
Page 293: Capacitor P.c. Board (Mcc-1711) Replacement Procedure
13-1-5. Capacitor P.C. Board (MCC-1711) Replacement Procedure Target model 43TN9885: MMY-MUP0721HT9*/0961HT9*/072H1HT9* 43TN9886: MMY-MUP1201HT9*/1441HT9*/1681HT9*/096H1HT9*/120H1HT9* Included items: ① MCC-1711 : 1pcs ② Spacer : 2pcs ③ Bush : ④ Collar : 5pcs 5pcs Replacement Steps: ⑤ Screw(M6) ⑦ Screw(M3) (1) Turn off the power supply of the outdoor unit and wait at least 5 minutes for the capacitor to discharge.
Page 294 (8) If spacers (②) are damaged, replace it and attach collars(④) and bushes(③) to the service P.C. board(①). ①P.C. board ③Bush ④Collar (9) Attach the Capacitor P.C. board with the five screws(⑦：5pcs (M3) ) removed in step (5). (10) Attach the reactor lead wire using the 2 or 4 screws removed in step (4) (⑥：2 or 4 pcs (M5) ). For the model has REACTOR 2, be careful not to make a mistake in the combination of lead wires.
Page 295: Fan-Motor P.c. Board (Mcc-1734) Replacement Procedure
13-1-6. Fan-Motor P.C. Board (MCC-1734) Replacement Procedure Target model 43TN9882: ALL model Set the DIP switch (SW800) settings of the service board to This board is commonly installed in different models. match as before replacement. Included items: ① MCC-1734 : 1pcs ②...
Page 296: 1). Noise Filter P.c. Board (Mcc-1749) Replacement Procedure
13-1-7(1). Noise Filter P.C. Board (MCC-1749) Replacement Procedure Target model 43TN9876: MMY-MUP0721HT9*/0961HT9*/072H1HT9* Included items: ① MCC-1749 : 1pcs ② Spacer : 4pcs ③ Spacer : 2pcs ④ Bush : 6pcs Replacement Steps: (1) Turn off the power supply of the outdoor unit and wait at least 5 minutes for the capacitor to discharge.
Page 297: 2). Noise Filter P.c. Board (Mcc-1749) Replacement Procedure
13-1-7(2). Noise Filter P.C. Board (MCC-1749) Replacement Procedure Target model 43TN9877: MMY-MUP1201HT9*/1441HT9*/1681HT9*/096H1HT9*/120H1HT9* Included items: ④ Bush : 6pcs ① MCC-1749 : 1pcs ② Spacer : 4pcs ③ Spacer : 2pcs Replacement Steps: Push (1) Turn off the power supply of the outdoor unit and Noise Filter P.C.
Page 298: Exploded Diagram/Parts List
14. EXPLODED DIAGRAM/PARTS LIST 14-1. Outdoor unit (6 ton, 8 ton) MMY-MUP0721HT9P-UL MMY-MUP0961HT9P-UL - 298 -...
Page 299 Outdoor unit (6ton, 8ton) MMY-MUP0721HT9P-UL MMY-MUP0961HT9P-UL 046 048 031 034 048 049 027 028 030 035 029 032 037 039 - 299 -...
Page 300 Outdoor unit (6ton, 8ton) MMY-MUP0721HT9P-UL MMY-MUP0961HT9P-UL - 300 -...
Page 301: Outdoor Unit (10 Ton Ton 14 Ton)
14-2. Outdoor unit (10 ton to 14 ton) Outdoor unit (10ton, 12ton, 14ton) MMY-MUP1201HT9P-UL MMY-MUP1441HT9P-UL MMY-MUP1681HT9P-UL Outdoor unit (High heat 8ton, 10ton) MMY-MUP096H1HT9PUL MMY-MUP120H1HT9PUL FAN 1 FAN 2 *1HT*P model H1HT*P model *1HT*P model *H1HT*P model - 301 -...
Page 302 Outdoor unit (10ton, 12ton, 14ton) Outdoor unit (High heat 8ton, 10ton) MMY-MUP1201HT9P-UL MMY-MUP096H1HT9PUL MMY-MUP1441HT9P-UL MMY-MUP120H1HT9PUL MMY-MUP1681HT9P-UL Upper Lower 027 028 047 048 047 048 - 302 -...
Page 303 Outdoor unit (10ton, 12ton, 14ton) Outdoor unit (High heat 8ton, 10ton) MMY-MUP1201HT* MMY-MUP096H1HT* MMY-MUP1441HT* MMY-MUP120H1HT* MMY-MUP1681HT* - 303 -...
Page 304: Outdoor Unit (16 Ton)
14-3. Outdoor unit (High heat 6ton) MMY-MUP072H1HT9PUL - 304 -...
Page 305 Outdoor unit (High heat 6ton) MMY-MUP072H1HT9PUL 047 048 053 063 037 039 027 028 030 035 029 032 047 049 - 305 -...
Page 306 Outdoor unit (High heat 6ton) MMY-MUP072H1HT9PUL - 306 -...
Page 307 Q'ty/Set MMY-MUP****HT9P-UL Ref.No. Part No. Description 0721 0961 1201 1441 1681 43T20341 FAN, PROPELLER, PS741-T 43T20359 FAN, PROPELLER, PF581-T 43T19374 BELLMOUTH 43T19375 BELLMOUTH 43T19376 BELL MOUTH, COVER 43T19377 BELL MOUTH, COVER 43T21539 MOTOR, FAN, ICF-340A1000-1 43T00817 BESE, MOTOR 43T00913 CABINET ASSY, SIDE, UP 43T00812 CABINET, FRONT, UP 43T00819...
Page 308 RUBBER, SUPPORTER, PIPE, DIA 6.4 43T49347 RUBBER, SUPPORTER, PIPE, DIA 8.0-DIA 8.0 43T49376 RUBBER, SUPPORTER, PIPE, DIA 9.5-DIA 28.6 43T49377 RUBBER, SUPPORTER, PIPE, DIA 9.5-DIA 28.6 43T01345 MARK, TOSHIBA CARRIER 43T19380 HOLDER, SENSOR, TO 43T39351 NUT, FLANGE 43T39350 WASHER 43T49357...
Page 309 Q'ty/Set MMY-MUP****HT9P-UL Ref.No. Part No. Description 072H1 096H1 120H1 43T20341 FAN, PROPELLER, PS741-T 43T20359 FAN, PROPELLER, PF581-T 43T19374 BELLMOUTH 43T19375 BELLMOUTH 43T19377 BELL MOUTH, COVER 43T21539 MOTOR, FAN, ICF-340A1000-1 43T00817 BESE, MOTOR 43T00913 CABINET ASSY, SIDE, UP 43T00812 CABINET, FRONT, UP 43T00819 CABINET, FRONT, UP 43T00914...
Page 310 RUBBER, SUPPORTER, PIPE, DIA 8.0 43T49355 RUBBER, SUPPORTER, PIPE, DIA 6.4 43T49347 RUBBER, SUPPORTER, PIPE, DIA 8.0-DIA 8.0 43T49377 RUBBER, SUPPORTER, PIPE, DIA 9.5-DIA 28.6 43T01345 MARK, TOSHIBA CARRIER 43T19380 HOLDER, SENSOR, TO 43T39351 NUT, FLANGE 43T39350 WASHER 43T49357 RUBBER, CUSHION...
Page 311 Inverter Assembly Model： MMY-MUP0721HT9*, 0961HT9*, 072H1HT9* The Interface P.C.B. sub-assembly Remove the Interface P.C.B. sub-assembly. Ref. No. Part No. Description Q'ty/Set Drawing No. 43T60440 TERMINAL, 3P, 100A 1001606403 43TN9876 PC BOARD ASSY,NOISE FILTER,MCC-1749 1142190401 43T55396 FILTER, LINE 1004135501 43TN9879 PC BOARD ASSY,INTERFACE,MCC-1747 1142090504 43TN9883 PC BOARD ASSY,COMP-IPDU,MCC-1746...
Page 312 Inverter Assembly Model： MMY-MUP1201HT9*, 1441HT9*, 1681HT9*, 096H1HT9*, 120H1HT9* The Interface P.C.B. sub-assembly Remove the Interface P.C.B. sub-assembly. Part No. Description Q'ty/Set Drawing No. Ref. No. 43T60440 TERMINAL, 3P, 100A 1001606403 43TN9877 PC BOARD ASSY,NOISE FILTER,MCC-1749 1142190402 43T60608 FUSE, 150A 1004135301 43T55397 FILTER, LINE 1004141201...

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