Page 1 FILE NO. SVM-16082-12 SERVICE MANUAL AIR-CONDITIONER (MULTI TYPE) <SUPER HEAT RECOVERY MULTI-e> Outdoor Unit Model name: MMY-MAP0726FT2P-UL Flow Selector Unit (FS unit) Model name: RBM-Y0383FUL RBM-Y0611F4PUL RBM-Y0613FUL RBM-Y0611F6PUL RBM-Y0963FUL RBM-Y0384FUL RBM-Y0614FUL RBM-Y0964FUL Revised on Jan, 2023...
Page 2: Table Of Contents
Parts Rating ............27 3-1. Outdoor Unit (208/230V model: MMY-MAP0726FT2P-UL) ......27 3-2.
Page 3 7-2. Applied Control of Outdoor Unit ..........68 7-2-1.
Page 4 TROUBLESHOOTING ..........135 9-1.
Page 5 Definition of Qualified Installer or Qualified Service Person The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
Page 6: Precautions For Safety
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 7 WARNING 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 8 If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, put a sign in place so that no- Do not bring one will approach the work location before proceeding with the work.
Page 9 When the refrigerant gas leaks during work, execute ventilation. If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to execute ventilation.
Page 10 Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
Page 11 Weight center Weight Model type (In(mm)) (In(mm)) (In(mm)) (lbs(kg)) 20.5"(520) 15.4"(390) 600(272) 24.0"(610) MAP0726FT2P-UL − 10 −...
Page 12 Multi port FS unit 8.5"(215) (Unit external dimension) (Hanging bolt pitch) Unit: in (mm) Weight [lbs (kg)] RBM-Y0611*** 28.8"(730) 31.6"(802) 11.6"(293) 14.4"(365) 3.8"(96) 84(38) F4PUL 41.4"(1,050) 44.2"(1,122) 11.6"(293) 20.7"(525) 3.8"(96) 117(53) F6PUL − 11 −...
Page 13: 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 high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
Page 14 4. Tools (1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.
Page 15: Specifications
1-1 Specifications − 14 −...
Page 16 − 15 −...
Page 17 − 16 −...
Page 18 − 17 −...
Page 19: Wiring Diagrams
Wiring Diagrams 2-1. Outdoor Unit Models: MMY-MAP0726FT2P-UL − 18 −...
Page 20: Single Port Fs Unit
2-2. Single port FS unit (Flow Selector unit) Specifications Model Name RBM-Y0383FUL RBM-Y0613FUL RBM-Y0963FUL 208/230 V - 1phase - 60 Hz Power supply Connectable indoor unit capacity (kBtu/h) Below 38 38 to below 61 61 to 96 or less Connectable indoor units Height (in) 7.49 7.49...
Page 21 <Installation space> (Unit: in (mm)) <RBM-Y0383FUL / Y0613FUL> 3.94"(100) or more 3.94"(100) or more Outdoor unit side Indoor unit side Hanging bracket 1.97"(50) or more Electrical control 9.85"(250) or more 9.85"(250) or more box cover Check, parts 17.7"×17.7"(450x450) or more <RBM-Y0383FUL (When attached pipes are used)>...
Page 22: Multi Port Fs Unit
Multi port FS unit 0611F4PUL 0611F6PUL − 21 −...
Page 23 ■In case of connecting Drain pump (locally produred) Only for Multi port FS unit (RBM-Y0611F4PUL, RBM-Y0611F6PUL) ・Connecting specifiction Connector specification Wire specification Parts Maker Type Size Type Outside Diameter Hausing J.S.T. XAP-03V-1-R AWG#28～22 0.8～1.9mm 0.08～0.33mm Contact J.S.T. SXA-001T-P0.6 CN34: External alarm input specification Locally procured switch Close Open...
Page 24 Multi port FS unit 0611F4PUL 0611F6PUL − 23 −...
Page 25: Single Port Fs Unit (Long Piping Model)
2-4. Single port FS unit (Long piping model) 2 34 2 34 − 24 −...
Page 26 SINGLE PORT FS UNIT (LONG PIPING MODEL) INSTALLATION SPACE ●Installation space − 25 −...
Page 27 ■Sound proof measure for Single port FS unit (Long piping model) Only for Single port FS unit (Long piping model) (RBM-Y0384FUL, RBM-Y0614FUL, RBM-Y0964FUL) For the customers who are disturbed by the noise of defrost operation, refrigerant flow or valve-2way, recommend the following. Item Outline Remarks...
Page 28: Parts Rating
Parts Rating 3-1. Outdoor Unit (208/230V model: MMY-MAP0726FT2P-UL) Name Model Specification Compressor DA421A3TB-20M1 Output:2.1kW×2 ○ 4-way valve coil AC208-230V 60Hz ○ AC208-230V 60Hz 2-way valve coil ○ SV3B, 11, 14, 15 AC208-230V 60Hz 2-way valve coil ○ SV2, 6, 3A, 3C, 3D, 3E...
Page 29: Outdoor Inverter (208/230V Model: Mmy-Map0726Ft2P-Ul)
3-2. Outdoor inverter (208/230V model: MMY-MAP0726FT2P-UL) Name Model Specification Power supply terminal block HP-T3015-31-3PL3S AC600V/100A, 3P ○ Relay terminal block for power supply JXO-6003 AC600V/60A, 3P ○ Communication terminal block JXO-B2J AC30V(or no more than DC42V)/1A,8P ○ Reactor(For comp.) CH-65 2.95mH/30A...
Page 30: Multi Port Fs Unit (Rbm-Y0611F4Pul, Rbm-Y0611F6Pul)
3-3. Multi port FS Unit (Model: RBM-Y0611F4PUL, RBM-Y0611F6PUL) RBM-Y0611 Parts Name Model Specification F4PUL F6PUL SVS, SVD ○ ○ 2-way valve coil VPV-MOAQ1843A0 AC208-230V 60Hz SVSS ○ ○ SVDD ○ ○ 2-way valve VPV-1204DQ55 SVS, SVD － ○ ○ SVSS ○...
Page 31: Parts Layout In Outdoor Unit
3-5. Parts Layout in Outdoor Unit Outdoor Unit (6 ton) Model: MMY-MAP0726FT* −30 −...
Page 32: Parts Layout In Inverter Assembly
3-6. Parts layout in inverter assembly Outdoor Unit (6 ton) Model: MMY-MAP0726FT2P-UL Noise Filter Inverter P.C. board for fan Interface P.C. board P.C. board [FAN IPDU] [Outdoor control P.C. board] (MCC-1682) (MCC-1610) (MCC-1673) Power supply terminal block Relay connector for...
Page 33: Outdoor (Inverter) Print Circuit Board
3-7. Outdoor (Inverter) Print Circuit Board 3-7-1. Interface P.C. board (MCC-1673) Sensor input PMV4output PMV1 output PMV3output TO CN507 CN303 CN300 CN302 TD2 CN503 TK2 CN532 TK5 CN535 TE2 CN521 TS2 CN506 Option input/output TD1 CN502 TK1 CN531 TK4 CN534 TE1 CN520 TS1 CN505 CN511 CN508 CN510 CN513 TL1 CN523 CN514 CN509 CN512...
Page 34: Inverter P.c. Board For Compressor (Mcc-1683) A3-Ipdu
3-7-2. Inverter P.C. board for compressor (MCC-1683) A3-IPDU Power supply Power supply Reactor connecting Reactor connecting input L2 input L1 terminal terminal CN03 CN04 CN02 CN05 Compressor output W-phase CN201 Compressor output V-phase CN202 Compressor output U-phase CN203 UART UART For inverter communication communication...
Page 35: Inverter P.c. Board For Fan Motor (Mcc-1610) Fan-Ipdu
3-7-3. Inverter P.C. board for fan motor (MCC-1610) FAN-IPDU For Inverter UART communication UART communication address setting CN504 CN505 J655,J656,J657,J658 Fan Motor Output U-phase CN705 Fan Motor Output V-phase CN704 Fan Motor Output W-phase CN703 Power supply Reactor connecting Reactor connecting Input terminal terminal...
Page 36: Noise Filer Pc Board (Mcc-1682 -A, -B,)
3-7-4. Noise Filter PC board (MCC-1682 -A, -B) Power supply Power supply Power supply Power supply Power supply input L2 input L1 output to I/F output to FAN output to FAN CN31 CN32 CN33 CN22 CN24 CN23 MCC-1682-A MCC-1682-B Power supply Power supply input L2 input L1...
Page 37: Refrigerant Piping Systematic Drawing
Refrigerant Piping Systematic Drawing Outdoor Unit (6 ton) Model: MMY-MAP0726FT* Propeller (Right side) (TO) Main heat exchanger Sub-heat exchanger (Right side) GEARED PMV1 (Left side) Main heat exchanger (TE1) PMV4 (TE2) SV15 Sub-heat exchanger (Left side) GEARED PMV3 (SV11) 4-way Valve (SV5) (TS1)
Page 38 Configuration of outdoor unit heat exchanger ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
Page 39 Flow Selector unit Single port FS unit RBM-Y0383FUL RBM-Y0613FUL Discharge Suction Liquid Discharge Suction Liquid gas pipe pipe gas pipe pipe gas pipe gas pipe Check valve Check valve Strainer Strainer Strainer Strainer Capillary Capillary Capillary Capillary Capillary Capillary Check Check (SVS) (SVS)
Page 40 RBM-Y0384FUL RBM-Y0614FUL Liquid pipe Discharge gas pipe Liquid pipe Discharge gas pipe Suction gas pipe Suction gas pipe SVDD SVDD (To indoor unit) (To indoor unit) (To indoor unit) (To indoor unit) Liquid pipe Gas pipe Liquid pipe Gas pipe RBM-Y0964FUL Liquid pipe Discharge gas pipe...
Page 41 Indoor Unit Liquid Gas side side Strainer Capillary tube Heat exchanger at indoor side Pulse Motor Valve (PMV) Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) Explanation of functional parts in indoor unit Pulse Motor Valve (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation 2) Controls subcool in heating operation 3) Recovers refrigerant oil in cooling operation...
Page 42: Combined Refrigerant Piping System Schematic Diagrams
Combined Refrigerant Piping System Schematic Diagrams 5-1. All Cooling mode (Operation of cooling only) when outside temperature is high (Standard: 90゜F or higher) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger...
Page 43: All Cooling Mode (Operation Of Cooling Only) When Outside Temperature Is
5-2. All Cooling mode (Operation of cooling only) when outside temperature is middle (Standard: 50゜F ~ 90゜F) / Defrost mode Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger Left side...
Page 44: All Cooling Mode (Operation Of Cooling Only) When Outside Temperature Is Low
5-3. All Cooling mode (Operation of cooling only) when outside temperature is low (Standard: 50゜F or lower) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1 Left side...
Page 45: All Heating Mode (Operation Of Heating Only)
5-4. All Heating mode (Operation of heating only) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1 Left side PMV1...
Page 46: Mainly Cooling Mode
5-5. Mainly cooling mode (Operating cooling function mainly, collective operation of cooling and heating operation) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1 Left side...
Page 47: Mainly Heating Mode
5-6. Mainly heating mode (Operating heating function mainly, collective operation of cooling and heating operation) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1 Left side...
Page 48: Emergency Operation (All Cooling Operation At Backup Of The Header Unit)
5-7. Emergency operation (All cooling operation at backup of the header unit) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Trouble When PMV leaked, service Temporal set center unit in valve at liquid side = Close fully emergency operation Fan motor Fan motor Right side Right side...
Page 49: Emergency Operation (All Heating Operation At Backup Of The Header Unit)
5-8. Emergency operation (All heating operation at backup of the header unit) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Trouble When PMV leaked, service Temporal set center unit in valve at liquid side = Close fully emergency operation Fan motor Fan motor Right side Right side...
Page 50: Refrigerant Recovery (During Pump-Down Operation) Of The Troubled Outdoor Unit) (In Case Of Trouble Of Follower Unit)
5-9. Refrigerant recovery (during pump-down operation) of the troubled outdoor unit) (In case of trouble of follower unit) Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL) Trouble Fan motor Fan motor Right side Right side Main heat exchanger Main heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1...
Page 51: Control Outline
6. CONTROL OUTLINE 6-1. Indoor Unit Control Specifications Item Specification outline Remarks Upon power 1. Identification of outdoor unit supply reset When the power supply is reset, the outdoor unit is identified, and control is redirected according to the identification result. 2.
Page 52 Item Specification outline Remarks Automatic 1. The outdoor unit determines the operational capacities of indoor units according to TS: Temperature capacity the difference between TA and TS. setting control TA: Room Cooling Heating temperature °F [°C] °F[°C] +3.6 [+2] +1.8 [+1] +1.8 [+1] -1.8 [-1] -1.8 [-1]...
Page 53 Item Specification outline Remarks Cold air 1. In heating operation, the upper limit of the fan tap is set according to the lower of TCJ: Indoor heat discharge whichever is the higher between TC2 sensor and TCJ sensor temperatures, on the exchanger sensor prevention one hand, and TC1 sensor temperature, on the other.
Page 54 Item Specification outline Remarks Cooling oil While the outdoor unit is recovering cooling oil (refrigerant), the indoor units perform • Recovery operation (refrigerant) the following control tasks: normally takes recovery place roughly every [common for operational (cooling thermostat ON / thermostat OFF / FAN), as well control 2 hours.
Page 55 Item Specification outline Remarks 14 Filter sign 1. The indoor fan’s cumulative hours of operation are counted, and when these “FILTER ” displayed display exceed the prescribed value (150H/2500H), a filter replacement signal is sent to (not applicable the remote controller to display a filter sign on it. to wireless type) 2.
Page 56 Item Specification outline Remarks 17 Louver control 1. Louver position setting • When the louver position is changed, the louver turns all the way down before settling in the set position. • Louver position is adjustable in the range shown in the diagrams below. During cooling/drying During heating/fan-only operation •...
Page 57: Outdoor Unit
6-2. Outdoor Unit Item Description of operation, numerical data, and other information Remarks 1. Pulse 1. PMV1, 3 control (PMV1, 3) motor valve 1) During air conditioner operation, the pulse count of a PMV1 (pulse motor valve 1) (PMV) During air conditioner operation. is controlled between 100pls and 3000pls.
Page 58 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 pressure 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 pressure sensor.
Page 59 Item Description of operation, numerical data, and other information Remarks 4. Oil level 1) Judgment as to whether an optimum amount of oil is present in the compressor • Oil level detection takes place regardless of the detection cases is made on the basis of the temperature readings of sensors TK1 to TK5. number of compressors, control This control function is performed by the header unit and each follower unit...
Page 60 Item Description of operation, numerical data, and other information Remarks 5. Oil This control function is aimed at preventing compressors from running out of oil by equation evening out the oil supply to outdoor units, and is basically performed by opening/ control closing solenoid valves SV3A, SV3B, SV3C, SV3D.
Page 61 Item Description of operation, numerical data, and other information Remarks 7. Defrosting 1. Defrosting commencement conditions • Frost formation temperature is 29.3 °F (-1.5°C). control • During heating operation, the cumulative duration of operation in which TE1 and • If the outdoor units are a (reverse TE2 sensor temperature falls below frost formation temperature is measured, and combination of different...
Page 62 Item Description of operation, numerical data, and other information Remarks 8. Release 1. SV2 gas balance control valve control This control function is aimed at achieving gas balance by opening SV2 while compressors are turned off so as to reduce their startup load the next time they are turned on.
Page 63 Item Description of operation, numerical data, and other information Remarks 8. Release SV41, 42 low pressure release control valve control This control function is aimed at providing low pressure protection, and is individually (cont’d) performed by the header unit and each follower unit. The control takes place during defrost operation, heating startup pattern control operation, and cooling operation.
Page 64 Item Description of operation, numerical data, and other information Remarks 11. A3-IPDU IPDU controls inverter compressors by issuing commands relating to compressor control speeds, speed increases/decreases, and current release control values via the interface P.C. board. The main control functions of the IPDU P.C. board are described below. 1.
Page 65 <Other points to note> Cooling operation under low outside temperature conditions 1) If pressure falls to extremely low levels, indoor units may be shut down via freeze prevention control based on the indoor TC sensor. 2) If pressure falls to extremely low levels, frequency may be reduced via cooling capacity control. 3) When the discharge temperature sensor reading falls below 140°F (60°C), the frequency may be increased above the level called for by the command received from the indoor unit.
Page 66: Applied Control For Outdoor Unit
Applied control for Outdoor Unit 7-1. Applied Control for 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 67: Priority Operation Mode Setting
7-1-2. 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 operation...
Page 68 (2) Indoor unit setup method for priority indoor unit mode The setting can be changed only when the system is at rest. (Be sure to turn off the system prior to this operation.) Push the buttons simultaneously and hold for at least 4 seconds.
Page 69: Applied Control Of Outdoor Unit
7-2. Applied Control of Outdoor Unit Optional control P.C. boards provide access to a range of functions as listed below. Outdoor unit Control P.C. board to be used Outdoor unit interface P.C. board setting* for control Function Jumper to be P.C.
Page 70: Power Peak-Cut Control (Standard)
7-2-1. Power peak-cut Control (Standard) Mode name : TCB-PCDM4UL (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 SW07 [ON]...
Page 71: Power Peak-Cut Control (Extended)
<SW07 Bit 2 OFF (two-step control)> Power peak-cut control is enabled as long as SW1, as shown on the wiring diagram, is ON (continuously). Jumper wire Input 100% (normal operation) 100% (normal operation) 0% (forced stop) Approx. 60% (upper limit regulated) Note 1: Specifications of display relay contact •...
Page 72: Snowfall Fan Control
7-2-3. Snowfall Fan Control Mode name : TCB-PCMO4UL Header outdoor unit Locally procured Connection Outdoor unit Optional PCB cable Snowfall sensor interface PCB COOL HEAT Shield wire SW1: Snowfall detection switch (snowfall sensor) Operation An external snowfall signal turns on the outdoor unit fan. Terminal Input signal Operation...
Page 73: Night Operation (Sound Reduction) Control
7-2-5. Night operation (sound reduction) Control Mode name: TCB-PCMO4UL Header outdoor unit Locally procured Connection Optional PCB Outdoor unit cable interface PCB 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 74: Operation Mode Selection Control
7-2-6. Operation Mode Selection Control Mode name : TCB-PCMO4UL Header outdoor unit Locally procured Connection Outdoor unit Optional PCB cable interface PCB 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 75: Trouble/Operation Output
7-2-7. Trouble/Operation Output Mode name : TCB-PCIN4UL Locally procured Header outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB OUTPUT1 SW16 CN511 PJ20 OUTPUT2 1 2 3 4 Shield OUTPUT3 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 76: Compressor Operation Output
7-2-8. Compressor Operation Output Mode name : TCB-PCIN4UL Locally procured Outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB CTR1 OUTPUT1 SW16 CTR2 CN514 PJ20 OUTPUT2 1 2 3 4 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 77: Operating Rate Output
7-2-9. Operating Rate Output Mode name : TCB-PCIN4UL Locally procured Header outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB OUTPUT1 SW16 PJ20 MONITOR CN514 OUTPUT2 1 2 3 4 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 78: Test Operation
TEST OPERATION 8-1. Procedure and Summary of Test Operation A test operation is executed with the following procedure. When a problem occurs at any step, remove the causes of the problem referring to “9 TROUBLESHOOTING.” Check basic items, mainly the installation work. Checks before test operation Be sure to enter the check results in checklist 1 and 2.
Page 79: Check Items Before Test Operation (Before Powering-On)
8-2. 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 that of R22 or R407 refrigerant “Modular Multi System” air conditioners. Check wiring points again carefully.
Page 80 (2) In the case that a central control system is connected (before address setup) (1) (4) Central remote controller To other refrigerant line Other refrigerant line o l l Outdoor unit To indoor unit Indoor unit Remote Remote Remote controller controller controller (1) Are the indoor and outdoor communication lines of the header unit connected to the U1/U2 terminals?
Page 81 Checklist 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 Follower unit (B) appropriate? Is the gauge of the Indoor unit Header unit (A) AWG power cable correct?
Page 82 Checklist 2 • Check the additional amount of refrigerant. Calculate the additional amount of refrigerant from the additional amount of refrigerant (A) by the pipe diameter on the liquid side, the pipe length to be connected, and the corrective amount of refrigerant (C) according to system horsepower.
Page 83: Check At Main Power-On
8-3. 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 84: Address Setup
8-4. Address Setup This product requires address setup before operation. Follow this procedure for address setup. 8-4-1. 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 SW15 on the interface PC board of the header unit Manual address setup: Setup from the wired remote controller.
Page 85: Address Setup Procedure
8-4-3. Address Setup Procedure No central control: Central control of 2 or more refrigerant lines: go to Address setting procedure 2 When controlling a single refrigerant line When controlling 2 or more refrigerant lines (Example) centrally centrally Address setting procedure Outdoor Central Central...
Page 86 (Example) Controlling 2 or more refrigerant lines as a group Outdoor Outdoor System wiring Indoor Indoor Indoor Indoor diagram (Group control) Remote controller (Note: The group control of more than two refrigerant systems is possible only when all the FS units are single port type.) Address setting procedure 2 Set a system address for each system using SW 13 and 14 on the interface P.C.
Page 87 Be sure to disconnect the relay connectors between the [U1U2] and [U3U4] terminals on all the header outdoor units that will be connected to the central control. (Factory default: disconnected) Turn on indoor units first, and then turn on outdoor units. About 1 minute after turning the power on, confirm that the 7-segment display on the interface U.
Page 88 Set the central control address. (For the setting of the central control address, refer to the installation manuals of the central control devices.) Header unit interface P.C. board SW15 SW04 SW05 4, 6 7-segment D600 D601 D602 D603 D604 display SW13 SW14 SW01 SW02 SW03...
Page 89 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 Header unit Follower unit Header unit Follower unit Header unit Factory default P.C.
Page 90 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. (Wiring example for 2 refrigerant lines) Arrange one indoor unit and one remote controller (Note: The group control of more than two refrigerant...
Page 91 NOTE (1) When setting the line address from the remote controller, do not use addresses 29 and 30. Addresses 29 and 30 cannot be set up on the outdoor unit. If they are incorrectly used, the code “E04” (indoor/outdoor communication circuit trouble) is output. (2) When manual address setup has been done from a remote controller, and central control over refrigerant lines is to be done, setup the header unit of each line as follows: •...
Page 92 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 93 Push and hold the TIME buttons at the same time for more than 4 seconds. At first, the line 1 and CODE No. (Address Change) are indicated on the LCD display. (Select an outdoor unit.) UNIT LOUVER SWING/FIX Push the (left side of the button) and buttons repeatedly to select a system address.
Page 94 Push the TIME buttons repeatedly to change the value indicated in the SET DATA section to that you want. Push the button. UNIT LOUVER Push the button (left side of the button) repeatedly to select another indoor UNIT No. to change.
Page 95 Push the button. • The address of one of the indoor units connected to the selected refrigerant line is indicated on the LCD display and the fan and louvers of the unit are activated. SET DATA At first, the current indoor unit address is displayed in (No system address is indicated.) CODE No.
Page 96 2) Turn on DIP switch 2 of SW30 on the interface P.C. board of the header outdoor unit if the switch is OFF. (Leave it as it is if it has already been set to ON.) Central remote controller Header Header Header Follower unit...
Page 97 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. Method 1 Set up an address individually from a wired remote controller.
Page 98: Check After Address Setup When Central Control System Is Connected
8-4-4. 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 controller To other refrigerant line Line address = 2 Line address = 1 Other refrigerant line Follower unit (B) Outdoor unit...
Page 99: Setting When Connecting Multiple Indoor Units To A Fs (Flow Selector) Unit
8-4-5. Setting when connecting multiple indoor undoor units to a FS (Flow Selector) unit ¿ Cautions to connection of indoor ¿ How to set up CODE No. [ 0E ] unit It is necessary to set up in case of the group connection.
Page 100 q Case that FE/FD setting is not necessary q Case that FE/FD setting is not necessary Single port type FS unit Single port type FS unit Piping Piping Indoor unit Indoor unit Control wiring Control wiring Remote controller between indoor between indoor Remote controller unit and FS unit...
Page 101 <In case of connecting one group operation of ◆ [ Set up example ] indoor units> [ 0E ] : Group setting Single port type FS unit 0 : Individual (Factory default) Piping 1 : Group [ 14 ] : Group Address 0: Individual Indoor unit Control wiring...
Page 102 <In case of connecting one group operation of <Incorrect connection examples> indoor units and two indoor units> Incorrect Single port type FS unit Single port type FS unit Piping Single port type FS unit Piping Indoor unit Control wiring between Remote Indoor unit indoor unit and FS unit...
Page 103 <In case of two or more branching system of FS units> Outdoor Single port type FS unit (Long piping model) unit (Same as Single port type FS unit) Piping ① Indoor unit Remote controller [ 0E ] : [ 14 ] : [ FE ] : [ FD ] : Single port type FS unit (Long piping model)
Page 104: How To Set Up The Cooling Only Indoor Unit
8-4-6. How to set up the cooling only indoor unit Select an indoor unit of which setting is to be When setting the specific indoor unit to Cooling Only changed. unit without connecting to the flow selector unit, setup to the indoor unit to become the Cooling Only unit is CODE No.
Page 105: Troubleshooting In Test Operation
8-5. Troubleshooting in Test Operation If there are phenomena such as the output of a check code or the remote controller is not accepted when powered- on after wiring work or during address setup operation, the following causes are considered. 8-5-1.
Page 106: 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
8-5-2. 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 status display Line addresses and indoor addresses of all the connected Set up addresses.
Page 107: Outdoor/Indoor Units That Do Not Operate In A Test Operation.)
8-5-4. 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.) Miswiring of communication lines between outdoor units After improvement of wiring, set up the addresses again The number of or an unconnected wire ( Fig.
Page 108 Miswiring example Remote Header unit Figure controller 7-segment Miswiring example status display Header unit Header unit U3 U4 U5 U6 Fig. 1 E19-00 response U1 U2 U1 U2 U1 U2 U1 U2 Header unit Follower unit U1 U2 U5 U6 U1 U2 U5 U6 Fig.
Page 109: Test Operation Check
8-6. Test Operation Check 8-6-1. 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, remove the cause of the trouble, referring to "Check code and check Check code position displayed on remote appears...
Page 110: Single Cooling/Single Heating Test Operation Check
8-6-2. Cooling/heating Test Operation Check The cooling/heating test operation check can be performed on both the indoor remote control and the outdoor header unit interface PC board. (1) Test operation start/stop operation Test operation from the indoor remote control • Wired remote control: Refer to the items below in “Test operation” of the wired remote control. •...
Page 111 Wireless remote control Wireless remote control (4-way Cassette type) (Ceiling type) Test run (Forced cooling operation) Test run (Forced cooling operation) Requirement: Requirement: • Finish the forced cooling operation in a short • Finish the forced cooling operation in a short time because it applies excessive strength to the time because it applies excessive strength to the air conditioner.
Page 112 (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 113: Service Support Function
8-7. Service Support Function 8-7-1. 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. However, be sure to check the following items prior to executing this check function.
Page 114 Note 1: Criteria for the difference between suction and discharge temperatures (1) Individual 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) Individual heating operation After operating for a minimum of 30 minutes in “HEAT”...
Page 115 Operation start (7-segment display) Press the push-switch SW04 on the interface P.C. board of the header unit for 2 seconds or more. The Cooling [ CC ] Operation operation starts. Heating [ HH ] Check that 7-segment display [B] shows [ CC] for cooling and [ HH] for heating.
Page 116: Function To Start/Stop (On/Off) Indoor Unit From Outdoor Unit
8-7-2. 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. p/Release 7-segment display All cooling test Changes the mode of all the [Setup] Section A Section B...
Page 117 (1) All 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 118 (2) All 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 119 (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 120 (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 121 (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 64) to be started (Refer to the following table*) - only the setup indoor unit starts operation.
Page 122: Check Code Clearing Function
8-7-3. Check code Clearing Function (1)Clearing from the main remote controller 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 123 (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 124: Remote Controller Distinction Function
8-7-4. 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 125: Pulse Motor Valve (Pmv) Forced Open/Close Function In Indoor Unit
8-7-5. 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 126: Solenoid Valve Forced Open/Close Function In Outdoor Unit
8-7-7. Solenoid Valve Forced Open/Close Function in Outdoor Unit This function is provided to forcedly open each solenoid valve mounted in the outdoor unit by the switch operation on the interface P.C. board in the outdoor unit. Use this function to check there is no refrigerant clogging with ON/ OFF operation of the solenoid valve.
Page 127: Fan Operation Check In Outdoor Unit
8-7-8. 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 frequency of 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 128: Abnormal Outdoor Unit Discrimination Method By Fan Operating Function
8-7-9. 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 129: Manual Adjustment Function Of Outside Temperature (To) Sensor
8-7-10. 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 130 <Service support function list> Refrigerant circuit and control communication line check function (Cooling [J . C] operation) Refrigerant circuit and control communication line check function (Heating operation) l l u l l o n i l e l l v i t [F .
Page 131: Refrigerant Leakage Detection
8-7-11. Refrigerant leakage detection The refrigerant leakage can be confirmed by using the switches on Interface PCB 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.
Page 132: Monitor Function Of Remote Controller Switch
8-7-12. Monitor Function of Remote Controller Switch When using a remote controller with the model name RBC-AMT32UL, the following monitor functions can be used. 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.
Page 133 Unit Remote controller display example Room temperature (Use to control) ×1 °C [0027]= 27°C Room temperature (Remote controller) ×1 °C Indoor suction air temperature (TA) × °F l i o × °F [0080]= 80 °F l i o × °F l i o ×...
Page 134: Smms Wave Tool For Smartphone
NFC TAG DEVICE SMARTPHONE QR code URL：http://www.toshiba-carrier.co.jp/global/appli/smms_wave_tool/ 8-8-1. Prohibition/Permission of the NFC Setting ・This Application enables the functions of the auto-address setup and the test operation of the outdoor unit with Smartphone within 48 hours from the power input to the outdoor unit.
Page 135: Confirmation For The Generation Of The Trouble Of The Nfc
How to set the NFC operation all time permission Follow the below procedure. Rotaly switch Push switch 7-segment display NFC operation Step setting SW01 SW02 SW03 SW04 [ A ] [ B ] (Default setting) After the power input, :below 48 hours [ nF] [ c.00 ] [NFC operation permit] :more than 48 hours...
Page 136: Troubleshooting
(1) Before engaging in troubleshooting (a) Applicable models All Super Heat Recovery Multi (SHRM-e) models. (Indoor units: MM*-AP***, Outdoor units: MMY-MAP0726FT2P-UL ) (b) Tools and measuring devices required (c) Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc.
Page 137: Troubleshooting Method
9-2. Troubleshooting Method The remote controllers (main remote controller and central control remote controller) and the interface P.C. board of an outdoor unit are provided with 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 problem site/problem part may be identified in the event of a problem by following the method described below.
Page 138 List of Check Codes (Indoor Unit) (Check code detected by indoor unit) Check code Display of receiving unit Outdoor 7-segment display Indicator light block TCC-LINK central Typical problem site Description of Check code control or main Operation Timer Ready remote controller Flash Sub-code display...
Page 139 List of Check Codes (Outdoor Unit) (Check code detected by SHRM-e outdoor interface - typical examples) If "HELLO" is displayed on the oudoor 7-segment for 1 minute or more, turn off the power supply once and then turn on the power IPDU: Intelligent Power Drive Unit (Inverter P.C.
Page 140 Check code Display of receiving unit TCC-LINK Outdoor 7-segment display Indicator light block Typical problem site Description of check code central control or main remote Operation Timer Ready Flash controller Sub-code display Outdoor suction 01: TS1 Outdoor suction temperature sensor temperature 02: TS2 (TS1,TS2) has been open/short-circuited.
Page 141 Check code Display of receiving unit TCC-LINK Outdoor 7-segment display Indicator light block Typical problem site Description of check code central control or main remote Operation Timer Ready Flash controller Sub-code display A3-IPDU Fan-IPDU ○ ○ ○ ○ ○ ○ ○...
Page 142 (Check code detected by IPDU featuring in SHRM-e standard outdoor unit - typical examples) Check code Display of receiving unit TCC-LINK Outdoor 7-segment display Indicator light block Typical problem site Description of check code central control or main remote Operation Timer Ready Flash controller Sub-code...
Page 143: Troubleshooting Based On Information Displayed On Remote Controller
9-3. Troubleshooting Based on Information Displayed on Remote Controller Using main remote controller (RBC-AMT32UL) (1) Checking and testing When a problem occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation.
Page 144 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 “9-2. Troubleshooting Method”.
Page 145 Cause of check code Heat exchanger temperature sensor (TCJ) trouble Operation Timer Ready Heat exchanger temperature sensor (TC2) trouble Indoor unit temperature sensor Heat exchanger temperature sensor (TC1) trouble troubles Ambient temperature sensor (TA/TSA) trouble Alternate blinking Discharge temperature sensor (TF) trouble Discharge temperature sensor (TD1) trouble Operation Timer Ready...
Page 146 Cause of check code Duplicated FS units FS unit overflow trouble FS unit temperature sensor(TCS) trouble Operation Timer Ready Outdoor EEPROM trouble Synchronized blinking Other (indications not involving check code) Cause of check code Operation Timer Ready – Test run in progress Synchronized blinking Operation Timer Ready...
Page 147: Check Codes Displayed On Remote Controller And Shrm-E Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked
9-4. Check Codes Displayed on Remote Controller and SHRM-e Outdoor Unit (7-Segment Display on I/F Board) and Locations to Be Checked For other types of outdoor units, refer to their own service manuals. Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations)
Page 148 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code No. of indoor Indoor Indoor-outdoor All stop • Check power supply to Condition 1 units from communication One indoor unit or more indoor unit.
Page 149 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Indoor unit not All stop Indoor unit cannot be • Check connection of found during detected after indoor indoor-outdoor automatic automatic address setting is...
Page 150 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Indoor Trouble in Stop of Periodic communication • Check remote controller unit communication corresponding between indoor header and wiring.
Page 151 Check code Location Check code detection System Outdoor 7-segment display Description Check items (locations) Main condition(s) status remote detection Check Sub-code controller code IPDU All stop Communication is disrupted • Check wiring and A3-IPDU Fan-IPDU communication between IPDUs (P.C. connectors involved in trouble boards) in inverter box.
Page 152 Check code Location Check code detection Outdoor 7-segment display System Description Check items (locations) Main status condition(s) remote detection Check Sub-code controller code TO sensor All stop Sensor resistance is infinity • Check connection of TO trouble or zero (open/short circuit). sensor connector.
Page 153 Check code Location Check code detection Outdoor 7-segment display System Description Check items (locations) Main status condition(s) remote detection Check Sub-code controller code Indoor Other indoor Stop of Indoor P.C. board does not • Check for defect in indoor P.C. –...
Page 154 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Low oil level All stop Operating compressor <All outdoor units in protection detects continuous state of corresponding line to be low oil level for about 2 hours.
Page 155 Check code Location System Check code detection Outdoor 7-segment display Description Check items (locations) Main status condition(s) remote detection Check Sub-code controller code • Check for disconnection of TK1 sensor. 01: TK1 oil circuit trouble Oil level All stop detection •...
Page 156 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Duplicated All stop • Check display on priority More than one indoor units priority indoor have been set up as priority indoor unit.
Page 157 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Trouble in No. All stop Insufficient number of IPDUs • Check model setting of A3-IPDU Fan-IPDU are detected when power is P.C.
Page 158 Check code Check code Location Outdoor 7-segment display System detection Description Check items (locations) Main status remote detection condition(s) Check Sub-code controller code 01: Compressor 1 side IPDU Activation of high- All stop High-pressure SW is • Check connection of high- pressure SW activated.
Page 159 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code • Check full-close operation Outdoor liquid All stop <During cooling operation> of outdoor PMV (1, 3, 4). backflow When system is in cooling •...
Page 160 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Detected outdoor unit No. 4-way valve All stop Abnormal refrigerating cycle • Check for trouble in main reversing data is collected during body of 4-way valve.
Page 161 Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code (Sub code: #0) • Check fan motor. Fan IPDU over current • Check for trouble in fan IPDU protection circuit Outdoor fan P.C.
Page 162 Check codes Detected by TCC-LINK Central Control Device Check code Location Check code detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Sub-code controller TCC-LINK TCC-LINK Continued Central control device is • Check for trouble in central control device.
Page 163 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 IPDU P.C. board (A3-IPDU). (Be sure to remove all the leads.) (3) Turn on the power supply and start cooling or heating operation.
Page 164: Diagnosis Procedure For Each Check Code
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Page 196: 7-Segment Display Function
9-6. 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. board (SW01, SW02 and SW03).
Page 197 (1)Display of System Information (Displayed on Header Outdoor Unit Only) − − System capacity A [… ...6.0t.]~[...38.0t.] :6 to 38 ton No. of outdoor units A […1]~[…3]:1 to 3 B […P] No. of indoor units connected / No. A […0.]~[64.]:0 to 64 (No. of units connected) of units with cooling thermostat ON B [C…0]~[C64]:0 to 64 (No.
Page 198 (2)Display of Outdoor Unit Information (Displayed on Each Outdoor Unit) Check code data Outdoor unit No.: [U1] to [U3] B Check code (only latest one displayed) If there is no check code, [– – –] is displayed. If there is sub-code, check code [ ] and sub-code [–...
Page 199 (3) Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit) SW01 SW02 SW03 Display detail PD pressure data PD pressure (psi) is displayed in decimal format. ∗ ∗ ∗ P d. ∗ ∗ ∗ PS pressure data PS pressure (psi) is displayed in decimal format. P s.
Page 200 (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. Check code data [U. ], : SW03 setting No. + 1 (Outdoor unit No. U2 to U3) B Check code is displayed (latest one only).
Page 201 (5) Display of Indoor Unit Information (Displayed on Header Unit Only) SW01 SW02 SW03 Display detail Indoor BUS communication signal Upon receiving signal: [..1], Other times: [..] receiving status Indoor check code No check code: [– – –] Indoor capacity ...
Page 202: Oil Level Judgment Display
9-7. 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 203: Shrm-E Outdoor Interface P.c. Board Function Setting Exchange Table
9-8. SHRM-e Outdoor Interface P.C. Board Function Setting Exchange Table 1. Switch/Function Setting Exchange Initial setting Part type Exchange contents at shipment bit 1 Compressor 1 backup OFF: Normal, ON: Backup when compressor 1 was in trouble bit 2 Compressor 2 backup OFF: Normal, ON: Backup when compressor 2 SW06 DIP SW 4 bit...
Page 204 2. Switching of Jumper Wire/Function Function switching setup Setup × : With jumper, : Without jumper (Cut) Initial setting jumper Part type Exchange contents at shipment Optional function Indoor unit at not selected side is kept with waiting status. Operation mode selection The mode is changed a mode which selected the operation mode of the ×...
Page 205 Interface Board Switches and jumper wire positions to be used in the Function setup switching table CN30 CN31 CN32 Interface P.C.board SW30 SW06 SW07 SW09 SW10 SW11 SW12 SW13 SW14 SW16 SW17 − 204 −...
Page 206: Leakage/Clogging Of Refrigerating Cycle Circuit
9-9. Leakage/Clogging of Refrigerating Cycle Circuit List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MAP0726*) Clogging Site of fault Part Check target unit Detected fault and check code Symptom (see next page) Outdoor PMV1, PMV3, 4 Corresponding unit Activation of high-pressure protection...
Page 207 Propeller (Right side) (TO) Main heat exchanger Sub-heat exchanger (Right side) GEARED PMV1 (Left side) Main heat exchanger SV15 (TE1) PMV4 (TE2) Sub-heat exchanger (Left side) GEARED PMV3 (SV11) 4-way Valve (SV5) (TS1) Low pressue sensor Check joint (low pressue) (TL1) Check joint (SV6)
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Page 210 <REFERENCE> An Example of Refrigerant Flow in FS Unit When Trouble Occurred Indoor unit Cool/Heat FS unit − 209 −...
Page 211: Sensor Characteristics
9-10. Sensor characteristics Outdoor Unit ▼ Temperature sensor characteristics Outdoor TS1, TS2, TE1, TE2, TL1 and TO sensors Temperature Resistance [°F (°C)] [kΩ] -4 (-20) 114.8 5 (-15) 83.9 14 (-10) 62.1 Resistance 23 (-5) 46.5 [kΩ] 32 (0) 35.2 (50 °F (10 °C) Resistance 41 (5)
Page 212 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 Input/output name Input/output name 0.5~4.3V...
Page 213 Temperature [˚F (˚C)] Resistance [kΩ] Indoor TC1 sensor -4 (-20) 98.3 5 (-15) 73.7 14 (-10) 55.8 23 (-5) 42.6 32 (0) 32.8 41 (5) 25.5 Resistance Resistance 50 (10) 20.0 [ kΩ] [ kΩ] 15.7 59 (15) ( 50˚F (10˚C) ( 50˚F (10˚C) 68 (20) 12.5...
Page 214: Pressure Sensor Output Check
9-11.Pressure sensor output check Outdoor Unit Pd sensor characteristics 0 to 639 psi (4.41 MPa) (0.5 to 5 V output for 0 to 639 psi (4.41 MPa)) Voltage readings across pins 2 and 3 of CN501 on indoor unit main P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT...
Page 215 Outdoor Unit Ps sensor characteristics 0 to 215 psi (1.47 MPa) (0.5 to 5 V output for 0 to 215 psi (1.47 MPa)) Voltage readings across pins 2 and 3 of CN500 on indoor unit main P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT...
Page 216: Backup Operation
BACKUP OPERATION (EMERGENCY OPERATION) This product offers backup modes of operation to tide over certain emergency situations. If a fault 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 217: Compressor Backup Operation Setting
10-2. Compressor Backup Operation Setting <Outline> If a fault occurs to one of the compressors installed in outdoor unit, follow the procedure described below to back up the faulty compressor by using the remaining, normal compressor. <Work Procedure> (1) Turn off the power supply to all the outdoor units connected to the system. (2) Set the DIP switches of SW06, provided on the interface P.C.
Page 218: Outdoor Unit Backup Operation Setting
10-3. 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 fault modes specified below occurs to one of the outdoor units in a multi-outdoor unit system, proceed with outdoor unit backup operation.
Page 219 [Setup of header unit] Interface P.C. board of header unit (5) Turn on Bit 2 of SW09 on the interface P.C. board of the header unit. SW06 SW07 SW09 SW10 (Setting to prevent connected indoor units capacity over trouble. (E16)) SW11 SW12 SW13...
Page 220: Header Outdoor Unit Backup Operation Setting (Failure Of Header Outdoor Unit)
10-3-2. 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 discharge gas pipe and suction gas pipe service valve of the failed outdoor unit. (3) Leave the service valves of the liquid and balance pipes fully open (to prevent refrigerant stagnation in the failed outdoor unit).
Page 221 [Selection of new header unit] (5) Select a new header unit from the follower units on the basis of the following criteria: • If only one follower unit is connected, select it as the header unit. [Setup of new header unit] (6) Set SW13 and SW14 on the interface P.C.
Page 222 (11)Turn on the power supply to all the units connected to the system other than the failed unit. Determine what to do with the power supply to the failed unit in the following manner. <In case of fault in compressor, electrical part, I/F P.C. board, or IPDU P.C. board> Leave the power supply off.
Page 223: Outdoor Unit Refrigerant Recovery Method
OUTDOOR UNIT REFRIGERANT RECOVERY METHOD 11-1. Refrigerant Recovery from Failed Outdoor Unit (Pump-Down) This product supports refrigerant pump-down, 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. 11-1-1.
Page 224 (5) [rd] [… FF] will be displayed on the 7-segment display, and pump-down operation will start. * To put the operation on hold midway, turn off the power supply to all the outdoor units, or press SW05 on the interface P.C. board. Header unit Failed outdoor unit If oil has degraded due to...
Page 225 [Setup of failed outdoor unit] (12) When the low-pressure sensor output of the failed outdoor unit falls below 0.10MPa, fully close the balance pipe packed valve, and press SW05 on the interface P.C. board to finish the pump-down operation. (13)Turn off the power supply to all the outdoor units, and recover the residual refrigerant in the outdoor unit using a refrigerant recovery device.
Page 226: Refrigerant Recovery Procedure B (Case Of Outdoor Unit Backup Operation Setting)
11-1-3. Refrigerant recovery procedure B (Case of outdoor unit backup operation setting) <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 failed outdoor unit. (Refrigerant will be recovered from the failed outdoor unit using the test cooling operation function.) Note 1: If cooling-season outdoor unit backup operation or outdoor unit backup operation is in progress with the power supply to the failed outdoor unit turned on, follow the procedure described in “11-1-2.
Page 227 [Setup of header unit] (8) While monitoring the low-pressure sensor output, adjust the pressure to around 17.4 psi by slowly closing the gas pipe service valve. (9) Compare the manifold gauge pressure of the failed unit with the low-pressure sensor output of the header unit, and wait until the two pressure readings become almost identical.
Page 228: How To Operate System While Failed Outdoor Unit Being Repaired
11-2. How to Operate System While Failed Outdoor Unit Being Repaired <Outline> After refrigerant is recovered from the failed outdoor unit through a pump-down 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 229: Work Procedure After Repair
11-3. Work procedure after Repair When vacuuming in the repaired outdoor unit, follow the procedure described below. <Work procedure> (1) Fully open PMV1 and PMV4 in accordance with the table below. Note: PMV full-opening operation via short-circuiting of the CN30 pins is automatically undone after 2 minutes, causing the valves to fully close.
Page 230: Replacing Compressors
REPLACING COMPRESSORS 12-1. Compressor Replacement Procedure (Outline) START WARNING In situations such as indoor unit relocation and repairs, Is the outdoor unit the only one in the system? it is not possible to recover all the refrigerant held by the system in the outdoor units.
Page 231: Replacement Of Compressors
12-2. Replacement of Compressors <Checking color of oil in troubled compressor> • Lay the faulty 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 color checking result. ASTM grade: Below 4 Replace the troubled compressor only.
Page 232 Amount of oil in troubled compressor A [gal]: 0.264 ≤ A < 0.502 (1) Adjust the amount of oil in the new compressor to A gal. (Lay the new compressor down and draw (0.502 - A) [gal] of oil via the oil equalization pipe.) Compressor Amount of oil in troubled compressor A [gal]: 0.502 ≤...
Page 233 [When replacing normal as well as troubled compressor] - applicable to MMY-MAP0726∗ <Remove the normal compressor> • Remove the normal compressor in the same way as the troubled compressor. Note: • Be sure to insulate the removed compressor leads using insulation tape, etc. WARNING When detaching a pipe by heating with a burner at brazed joint, take care as any oil left in the piping may burn in a momentary flash of fire when the brazing filler metal melts.
Page 234 <Installing compressor> • Install a compressor by following the dismantling procedure in reverse. • The dismantling process may have loosened compressor leads and quick connectors. Prior to installation, therefore, tighten them a little with a pair of pliers, and verify that they are tight after reconnection. Notes: •...
Page 235: Check Procedure To Search Cause Of Compressor Oil Shortage
12-3. Check Procedure to Search Cause of Compressor Oil Shortage Are the balance pipes of all outdoor units connected to the Open the balance pipe valves fully. same refrigerant line fully open? Are there any miswiring or incorrect Correct the miswiring or connection. connection of TK1, TK2, TK4 and TK1: CN531 TK2: CN532 TK5 sensor in the unit that has...
Page 236 <MMY-MAP0726 > Check items and procedures to follow when checking oil circuit with compressor(s) disconnected Check item Location Procedure 1) Pressure nitrogen from check joint of the liquid pipe under condition that PMV1, 3 and 4 are fully closed, confirm the pressure using high-pressure check joint. If pressure of the high-pressure check joint rises, leakage from any of PMV1, 3, 4 (A, B) and discharge check Leakage of outdoor PMV valve (C) is considered.
Page 237: Outdoor Unit Parts Replacement Methods
OUTDOOR UNIT PARTS REPLACEMENT METHODS Cabinet WARNING 2) Discharge cabinet Screws (4 corners) Wear a pair of gloves. 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 238 No. Part to be replaced Work procedure Remarks Cabinet 6) Protective plate ( back ) (continued) 6) Remove the protective plate (1) (back). Remove the upper hook from the middle partition plate, and then remove the lower hook from the center hole of the bottom plate.
Page 239 Propeller fan Fan motor WARNING Wear a pair of gloves. 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 2) Screws (4 corners) circuit breaker.
Page 240 Propeller fan 2. CAUTION for replacement or attachment D-cut surface of fan Fan motor 1) Insert the propeller fan while aligning the D-cut motor shaft (continued) surface of the fan motor shaft with the arrow mark ) on the fan. (If the propeller fan is tightly mounted on the shaft without securing alignment between the D-cut surface and the arrow mark (...
Page 241 Inverter assembly Fan IPDU board WARNING Wear a pair of gloves. 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. 2) Remove the inverter cover. (M4 ×...
Page 242 No. Part to be replaced Work procedure Remarks Inverter assembly 072 type (continued) 7) Hold the top board with both hands to disengage the top hook. Pull it forward 2. . Attachment Carry out installation by following the dismantling procedure in reverse 8) → 1). Before pushing the lower part in, pull the reactor leads out.
Page 243 Reactor assembly ・ 072 type case WARNING 3) Screws (2 locations) Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Stop the operation, and turn off the circuit breaker. 2) Remove the inverter assembly.
Page 244 Heat exchanger 2) Motor base WARNING Wear a pair of gloves. Otherwise, you will risk an injury involving a Heat exchanger ( right ) replacement part or some other object. Before the work, be sure to recover the refrigerant of outdoor unit into cylinders or another unit connected to Heat exchanger ( left )
Page 245 Work procedure Remarks Part to be replaced 6 2-way valve coils Pressure sensors Rear locations MMY- MAP0726FT2P-UL Liquid tank SV3D SV3B SV3E SV3A SV3C SV14 SV42 Accumlator Oil separator SV11 PS sensor PD sensor SV15 Compressor 1 Compressor 2 Inverter assmbly Front −...
Page 246 Work procedure Remarks Part to be replaced 7 Temperature sensors Product front view - locations and idenfication colors TO sensor (black) MMY- MAP0726FT2P-UL TE1 sensor (blue) TD1 sensor (yellow) TD2 sensor (red) TE2 sensor (red) TL1 sensor (white) Product rear view TK4 sensor (white) TK5 sensor (green) TS1 sensor (gray)
Page 247 Work procedure Remarks Part to be replaced 8 Pipe fixing rubber - detachment/ attachment Suction pipe <=> Distributor Oil header <=> Liquid pipe SV2 valve <=> Discharge pipe MMY- Φ3/4" (19.05) <=> Φ7/8" (22.22) Φ1" (25.4) <=> Φ1/2" (12.7) Φ1/4" (6.35) <=> Φ5/8" (15.88) MAP0726FT2P-UL SV6 valve <=>...
Page 248 Pipe fixing rubber - detachment/ WARNING attachment (common) Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Hold the pipe fixing rubber in such a manner that your fingers and thumb are in contact with the two Squeeze rubber to create small gap.
Page 249 4-way valve WARNING detachment/ attachment Wear a pair of gloves. MMY- Otherwise, you will risk an injury involving a PMV3 MAP0726FT* replacement part or some other object. PMV1 Before starting the work, be sure to recover the refrigerant of outdoor unit by removing it with a refrigerant recovery device.
Page 250: C. Board Exchange Procedures
P.C. BOARD EXCHANGE PROCEDURES ■ Outdoor Unit 14-1. Replacement of outdoor P.C. board Before replacing P.C. board, turn off the power supply of the outdoor unit. ※ Immediately after turning off the power of the outdoor unit, the electrolytic capacitors inside the unit will still have a high voltage, and there is a risk of electric shocks.
Page 251: List Of Service P.c. Boards
P.C. board type code Product code 43T6V995 Interface P.C. board MCC-1673 S-ASM-PCB(I/F) 43T6V833 Inverter P.C. board for compressor MCC-1683 S-ASM-PCB(A3IPD MMY-MAP0726FT2P-UL 43T6V776 Inverter P.C. board for fan MCC-1610 S-ASM-PCB(FAN) 43T6V834 Noise filter P.C. board MCC-1682-A,B S-ASM-PCB(N/F) 14-1-2. Configuration of inverter assembly Inverter P.C.
Page 252: Interface P.c. Board (Mcc-1673) Replacement Procedure
The jumper setting differs from original supplied PCB, therefore be sure to configure the Jumpers as in the table below. If the model is not specified, check code "L10" is displayed and the equipment will not operate. Model name Model size Service P.C. Board MMY-MAP0726FT2P-UL 990W －－－－...
Page 253: Comp-Ipdu P.c. Board (Mcc-1683) Replacement Procedure
(These screws are to be re-used after procedure.) (4) Remove the Compressor IPDU from the four spacers (③) by pinching the top of the spacers by round-nose pliers. Compressor IPDU ( 43T6V833) MMY-MAP0726FT2P-UL ① BLACK lead wire ① Reactor lead wire ③...
Page 254 (5) Set the DIP switch (SW800) setting of the service board to match the switch setting from the original PCB. -Set the DIP switch (SW800) depending on the position of the IPDU within the electrical box, as shown in the following diagram. MMY-MAP0726FT2P-UL Compressor IPDU【Left Side】 Compressor IPDU【Right Side】...
Page 255: Fan-Ipdu P.c. Board (Mcc-1610) Replacement Procedure
(3) Remove all five screws(②) which secures the FAN IPDU to the Heat sink. (These screws are to be re-used after procedure.) (4) Remove the Fan IPDU from the four PCB Mounts (③). FAN-IPDU MCC-1610 (43T6V776) MMY-MAP0726FT2P-UL ④Jumper for address setting ③ ③ ①Faston terminal RED lead wire ①Faston terminal...
Page 256 Apply the Silicone Thermal Grease to the semiconductors (IC701,DB510,DB511,Q590) on the service PC board, align the PCB mount holes on the PCB with the PCB mounts, and fix the FAN IPDU to the outdoor control unit by clipping the PCB into the PCB mounts (③). Uniformly apply the Silicone Thermal Grease to the heat dissipating surfaces of the IPM (IC701), DB510, DB511, Q590.
Page 257: Noise Filter P.c. Board (Mcc-1682 A, B) Replacement Procedure
Remove the screws ② o n the power supply terminal block ④ a nd the screws ③ s ecuring the terminal block subassembly ①. (3) The screws will be reused during the installation of the service P.C. board, so keep them in a safe place. MMY-MAP0726FT2P-UL Line Filter⑨ Noise Filter P.C. board Noise Filter P.C.
Page 258 (4) Remove the earth screws ⑤, ⑥ and the three PCB mount ⑩. • The removed earth screws ⑤, ⑥ and the PCB mount ⑩ will be reused during the installation of the service P.C. board, so keep them in a safe place. (5) Remove the noise filter P.C.
Page 259: Multi Port Fs Unit Parts Replacement Methods
MULTI PORT FS UNIT PARTS REPLACEMENT WARNING ・Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. ・Stop the power supply of the air conditioner and turn off switch of the power supply breaker. 1.
Page 260 3. . TERMINAL-PW (TB03) 1 Detachment 1) Perform work of procedure 1. of 1 Detachment . (Electoric parts cover) 2) Remove the wires from the TERMINAL-PW (TB03). Remove 3) Take off screws fixing the TERMINAL-PW (TB03). (φ4 x 0.6" (14mm), 2 pcs) from the terminal.
Page 261 5. . Top plate 1 Detachment 1) Take off the fixing screws (φ4 x 0.3" (8mm), 6 pcs) 2) Remove the top plate. Position of the screw holes (Top plate) E-BOX 2 Attachment 1) Fix the Top plate as before. Fit the non-thermal insulation material side to the E-Box side.
Page 262 Heat sink 1 Detachment Upper side 1) Take off the fixing screws. (M4 x 0.3" (8mm), 2 pcs) 2) Remove the heat sink from the coil. (SVSS or SVD) 2 Attachment Screws 1) Fix the heat sink as before. Fix the heatsink to the direction indicated in the figure. 2) Fit the screws of the heatsink (M4 x 0.3"...
Page 263 7. Coil-PMV, TCS-sensor 1 Detachment 1) Perform work of procedure 1. -1) (Electric parts cover) and 5. -1) (Top plate). 2) Cut the binding band (1 pc) which fix the Clamp filter to the wires of the Coil-PMV and the TCS-Sensor. CN720 Wire Clamp 3) Remove the Clamp filter from the wires of the Coil-PMV and...
Page 264 8. Drain hose 1 Detachment 1) Drain the drain water accumulated in the Drain pan. Claws 2) Remove the Drain hose while picking the claws Picking of the hose band. 2 Attachment 1) Pinch the claw of the horse band and make it loosen, Picking then insert the drain horse.
Page 265: Single Port Fs Unit (Long Piping Model) Parts Replacement Method
SINGLE PORT FS UNIT (LONG PIPING MODEL) PARTS REPLACEMENT METHOD WARNING ・Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. ・Stop the power supply of the air conditioner and turn off switch of the power supply breaker. 1.
Page 266 3. TERMINAL-PW (TB03) 1 Detachment 1) Perform work of procedure 1. of 1 Detachment . (Electric parts cover) 2) Remove the wires from the TERMINAL-PW (TB03). 3) Take off screws fixing the TERMINAL-PW (TB03). (φ4 x 0.6" (14mm), 2 pcs) Remove from the terminal.
Page 267 [RBM-Y0614FUL] For the leads of the coil (3pcs) that has the faston terminal of the straight type on the edge(Sleeve : colorless), connect each of them to any of the tab on the upper side of the TERMINAL (TB02)(4 places). For the leads of the coil (2pcs) that has the faston terminal of the straight type on the edge(Sleeve : green), connect each of them to any of the tab on the under side of the TERMINAL (TB02)(4 places).
Page 268 5. Top plate 1 Detachment 1) Take off the fixing screws (φ4 x 0.3" (8mm), 3 pcs) 2) Remove the top plate. Position of the screw holes (Top plate) E-BOX 2 Attachment 1) Fix the Top plate as before. 2) Fit the screws. (φ4 x 0.3" (8mm), 3 pcs.) −...
Page 269 6. Coil of 2WAY-VALVE (SVS, SVSS, SVDD, SVD) 1 Detachment 1) Perform work of procedure 1. -1) (Electric parts cover) and 5. -1) (top plate). 2) Remove lead wires of coils(SVS,SVSS, SVDD, SVD) from wire clamp. 3) Remove fixing screws with the Coil connection plate and then remove the coil. Fixing screw size SVS ,SVSS SVDD,SVD : M4x0.24"...
Page 270 Heat sink 1 Detachment Screws Upper side 1) Take off the fixing screws. (M4 x 0.3" (8mm), 2 pcs) 2) Remove the heat sink from the coil. (SVSS or SVD) 2 Attachment 1) Fix the heat sink as before. Fix the heatsink to the direction indicated in the figure. 2) Fit the screws of the heatsink (M4 x 0.3"...
Page 271 7. Coil-PMV 1 Detachment 1) Perform work of procedure 1. -1) (Erectric parts cover) and 5. -1) (Top plate). 2) Cut the binding band (1 pc) which fix the Clamp filter to the wires of the Coil-PMV and the TCS-Sensor. 3) Remove the Clamp filter from the wires of the Coil-PMV and TCS-Sensor.
Page 272 8.TCS-sensor 1 Detachment 1) Perform work of procedure 1. -1) (Erectric parts cover) and 5. -1) (Top plate). 2) Cut the binding band (1 pc) which fix the Clamp filter to the wires of the Coil-PMV and the TCS-Sensor. 3) Remove the Clamp filter from the wires of the Coil-PMV and TCS-Sensor. 4) Remove the wires of Coil-PMV from the Wire-clamp.
Page 273 9.BUSHING 1 Detachment 1) Perform work of procedure 1. of 1 Detachment . (Electric parts cover) 2) Remove Bushing from Electrical box. 2 Attachment 1) Attach Bushing to Electrical parts box. Groove Push Bushing to set its groove to steel sheet certainly. 2) Attach the Electric parts cover.
Page 274: Exploded Diagram/Parts List
EXPLODED DIAGRAM/PARTS LIST 17-1. OUTDOOR UNIT Outdoor Unit (6 ton) MMY-MAP0726FT2P-UL 017 051 087 088 − 273 −...
Page 275 Outdoor Unit (6 ton) MMY-MAP0726FT2P-UL − 274 −...
Page 276 REFRIGERATION CIRCUIT DIAGRAM Outdoor Unit (6 ton) MMY-MAP0726FT2P-UL 400V Fan motor made by Welling Right side Main heat exchanger (TO) Right side Sub-heat exchanger (PMV1) Right side M M a a i i n n h h e e a a t t e e x x c c h h a a n n g g e e r r...
Page 277 Q'ty/Set MMY- Parts Name Remarks Ref. No. MAP0726 FT2P-UL 43T20341 FAN, PROPELLER 43T20353 MOTOR, FAN, DC208-340V, 2300L 43T19365 CABINET, AIR OUTLET 43T19368 GUARD, FAN 43T00613 CABINET ASSY, SIDE, LEFT 43T00614 CABINET ASSY, SIDE, RIGHT 43T00624 CABINET, AIR INLET, FRONT 43T00620 CABINET, AIR INLET, BACK 43T00615 CABINET ASSY, FRONT, DOWN...
Page 278 RUBBER, SUPPORTER, PIPE 43T49355 RUBBER, SUPPORTER, PIPE 43T49347 RUBBER, SUPPORTER, PIPE 43T49360 RUBBER, SUPPORTER, PIPE 43T49358 BAND, FIX 43T19333 HOLDER, SENSOR 43T01315 MARK, TOSHIBA 43T63358 HOLDER, NFC 43T39351 NUT, FLANGE 43T39350 WASHER 43T47385 BOLT, COMPRESSOR 43T49357 RUBBER, CUSHION 43T47332 BONNET, 3/8 IN...
Page 279 17-2. Inverter Assembly MMY-MAP0726FT2P-UL − 278 −...
Page 280 Q'ty/Set MMY- Part No. Description Ref. No. MAP0726 FT2P-UL 43T50347 SENSOR ASSY, SERVICE 43T95303 SUPPORTER, ASSY 43T50348 SENSOR,TD (F6) 43T60440 TERMINAL, 3P, 100A 43T58331 REACTOR, CH-65 43T60457 TERMINAL, 8P 43T95301 SUPORT, SPACER 43T95302 SPACER(EDGE) 43T6V834 PC BOARD ASSY, NOISE FILTER, MCC-1682 43T6V995 PC BOARD ASSY, INTERFACE, MCC-1673 43T6V776...
Page 281 17-3. Multi port FS unit Models: RBM-Y0611F4PUL, RBM-Y0611F6PUL − 280 −...
Page 282 Q'ty/Set Parts No. Description RBM-Y0611 Ref. No. F4PUL F6PUL 43T6V766 PC BOARD ASSY, MCC-1681 43T46404 COIL, SOLENOID, VPV 43T46476 COIL-PMV 43T50347 SENSOR TCS 43T19333 HOLDER, SENSOR 43T70317 ASM-HOSE 43T83313 HOSE-BAND 43T60435 SERV-TERMINAL 43T60016 TERMINAL, 2P 43T60037 CLAMP-FILTER 43T96309 BUSHING 43T72327 DRAIN PAN ASSY 43T72328 DRAIN PAN ASSY...
Page 283 Single port FS unit RBM- 17-4. Y0383FUL, RBM-Y0613FUL Y0613 only Location Part No. Description RBM-Y0383FUL RBM-Y0613FUL 43149418 BODY ASSY, SERVICE 43149417 BODY ASSY, SERVICE 4316V338 PC BOARD ASSY, MCC-1431 COIL, SOLENOID, AC208-230 60Hz 4314N046 2WAY, COIL, ASSY 4314N125 43F60029 FILTER,NOISE 43135013 CABLE ASSY, POWER 43135017...
Page 284 RBM-Y0963FUL Location Part No. Description RBM-Y0963FUL 43149419 BODY ASSY, SERVICE 4316V338 PC BOARD ASSY, MCC-1431 COIL, SOLENOID, AC208-230 60Hz 4314N046 2WAY, COIL, ASSY 4314N125 43F60029 FILTER,NOISE 43135013 CABLE ASSY, POWER 43135017 CABLE ASSY means highly important parts to maintain product safety. –...
Page 285 RBM-Y0384FUL, RBM-Y0614FUL, RBM-Y0964FUL ④ ⑤ RBM-Y0384FUL ③ ② ⑥ RBM-Y0614FUL ② ⑨ RBM-Y0964FUL ② ① ⑧ Note: Coil only ⑦ Location Part No. Description RBM-Y0384FUL RBM-Y0614FUL RBM-Y0964FUL 4316V615 PC BOARD ASSY 4314N046 COIL, SOLENOID, AC208-230V 60HZ 43119537 PLATE, CONNECTION COIL 4314N149 COIL, PMV 43111373...
Page 286 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas NOTE 2 : leaking out, its concentration will not exceed a set limit. The standards for minimum room volume are as The refrigerant R410A which is used in the air conditioner is follows.

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Toshiba MMY-MAP0726FT2P-UL Service Manual

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