Toshiba MAR - M81HTM8 - E Service Manual
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Toshiba MAR - M81HTM8 - E Service Manual

Toshiba MAR - M81HTM8 - E Service Manual

Heat pump multi split (2-pipe)
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TOSHIBA
SERVICE MANUAL

AIR CONDITIONER

HEAT PUMP MULTI SPLIT (2-PIPE)
Outdoor Units
MAR - M81HTM8 - E
MAR - M101HTM8 - E
Multi Controllers
RBM - Y1032E - E
RBM - Y1042E - E
AUGUST 1997
Page 1

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Summary of Contents for Toshiba MAR - M81HTM8 - E

  • Page 1: Air Conditioner

    TOSHIBA SERVICE MANUAL AIR CONDITIONER HEAT PUMP MULTI SPLIT (2-PIPE) Outdoor Units MAR - M81HTM8 - E MAR - M101HTM8 - E Multi Controllers RBM - Y1032E - E RBM - Y1042E - E AUGUST 1997 Page 1...

  • Page 2: Table Of Contents

    TOSHIBA Contents 1. Specifications Outdoor Unit Multi Controller 2. Basic Permutations / Capabilities 3. Dimensional Views Outdoor Unit Multi Controller 4. Wiring Diagrams Outdoor Unit Multi Controller 5. Refrigeration Circuit Outdoor Unit Multi Controller 6. Display Information and Fault Codes 7.

  • Page 3: Specifications

    TOSHIBA 1. Specifications OUTDOOR UNITS Model MAR-M81HTM8-E MAR-M101HTM8-E Cooling Capacity 20.0 (22.4) 25.0 (28.0) Heating Capacity 20.0 (25.0) 25.0 (31.5) Power Supply 3ph,380/415v,50Hz Power Consumption (C/H) kW 8.0 / 7.7 10.1 / 10.1 Running Current (C/H) Amps 12.3 / 11.7 15.7 / 15.0...
  • Page 4 TOSHIBA 1. Specifications MULTI CONTROLLERS Model RBM-Y1032E-E RBM-Y1042E-E Number of Branches Gas Pipe (Inlet) Inch 1 1/8 1 1/8 Liquid Pipe (Inlet) Inch Branch Pipes (Gas) Inch 3/4 x 3 3/4 x 4 Branch Pipes (Liquid) Inch 3/8 x 3...
  • Page 5 TOSHIBA 2. Basic Permutations of Indoor to Outdoor Units The indoor units are given a code number according to their capacity rank - see below Model Number Code Number RAV103 RAV132/133 RAV453/160/1/2/3 RAV202/3 RAV713/260/1/2/3 RAV1003/360/1/2/3 RAV1253/460/1/2/3 Multiple indoor units may be connected to one outdoor unit, providing the total indoor code does not exceed the outdoor unit code number.

  • Page 6: Construction Views

    TOSHIBA CONSTRUCTION VIEWS MAR-M81HTM8E-E MAR-M101FHTM8E-E 98 mm 790 mm 824 mm 90 mm 750 mm 610 mm 375 mm 130 mm 160 mm AUGUST 1997 Page 6...

  • Page 7: Dimensional Drawings

    TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1032E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more...
  • Page 8 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1042E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more or more...
  • Page 9 TOSHIBA 4. Schematic Wiring Diagrams Outdoor Unit Reactor Giant Electric Starter Contactor Transistor Rectifier Smoothing Circuit 52C1 λ 2200 F/400v x 2 47k Ω /20W x 2 ℜ Noise Filter Contactor 52C2 U V W 1 2 3 4 ℜ...
  • Page 10 TOSHIBA 4. Schematic Wiring Diagrams Multi Controllers PMVA PMVB PMVC PMVD Transformer Sump Heater PJ 16 PJ 8 PJ 9 PJ 6 PJ 7 PJ 1 PJ 3 PJ 4 PJ 5 PJ 2 Float PJ 14 Switch LD 1...
  • Page 11 TOSHIBA 5. Schematic Refrigeration Diagram Outdoor Unit INVERTER COMPRESSOR H.P. SWITCH EXPANSION SERVICE VALVE PRESSURE VALVE ThD1 SENSOR PRESSURE INVERTER SWITCH COMPRESSOR DRIER LIQUID TANK HEAT CHECK VALVE EXCHANGER D.O.L. COMPRESSOR ThD2 HIGH PRESSURE RELEASE 4-WAY VALVE D.O.L. SERVICE H.P.SWITCH...
  • Page 12 TOSHIBA 5. Schematic Refrigeration Diagram Multi Controller INDOOR UNIT EXPANSION VALVE PMV(A) STRAINER BRANCH A CHECK VALVE EXPANSION VALVE PMV(B) LIQUID PIPE STRAINER STRAINER BRANCH B CHECK VALVE EXPANSION VALVE PMV(C) STRAINER BRANCH C CHECK VALVE EXPANSION VALVE PMV(D) STRAINER...

  • Page 13: Fault Codes

    TOSHIBA 6. Fault Code and Display Information Fault Codes Before reading the fault codes do not turn the power off as doing so will wipe the diagnostic memory. Caution must be taken when removing the access covers as high voltages are present.
  • Page 14 TOSHIBA 6. Fault Code and Display Information Display switch information Multicontroller Switch position Information System Communication Fault Codes Level of Demand Oil Retrieval, Superheat, Defrost Operating Mode Restart Timer Circuit Test (commissioning only) PMV(A) Position PMV(B) Position PMV(C) Position PMV(D) Position...
  • Page 15 TOSHIBA 6. Fault Code and Display Information Multi Controller Display Switch Information Switch Indicates LD 1 LD 2 Pos. |_| | |_ _ |_| | |_ _ |_| | |_ _ |_| | |_ _ Serial From B To B...
  • Page 16 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information The operating status of the outdoor unit and fault diagnosis can be made using both the display selector switch (on the interface pcb) and the eight red light emitting diodes on the interface printed circuit board.
  • Page 17 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information cont. d. Display switch set to position “3” identifies a fault condition in the outdoor unit. Details are in the fault code chart on page 13 e. Display switch set to positions “4, 5, 6 & 7” identifies the indoor unit capacity code for each branch.

  • Page 18: Circuit Test Procedure

    TOSHIBA 7. Circuit Test Procedure These systems have a feature which enables them to check that the wiring and piping connections are aligned with each other. This is carried out by allowing refigerant flow to one indoor unit at a time and monitoring that indoor unit’s coil sensor for a corresponding drop in temperature.
  • Page 19 TOSHIBA 8. Calculating The Additional Gas Charge Branch Pipes RAV-103 ; 0.030 kg/m RAV-133 ; 0.030 kg/m Main Pipes RAV-162 ; 0.030 kg/m Sub Pipes 0.19 kg/m RAV-202 ; 0.030 kg/m 0.125 kg/m RAV-262 ; 0.045 kg/m RAV-362 ; 0.045 kg/m RAV-462 ;...
  • Page 20 TOSHIBA SERVICE MANUAL AIR CONDITIONER HEAT PUMP MULTI SPLIT (2-PIPE) Outdoor Units MAR - M81HTM8 - E MAR - M101HTM8 - E Multi Controllers RBM - Y1032E - E RBM - Y1042E - E AUGUST 1997 Page 1...

  • Page 21: Calculation For Additional Gas Charge

    TOSHIBA Contents 1. Specifications Outdoor Unit Multi Controller 2. Basic Permutations / Capabilities 3. Dimensional Views Outdoor Unit Multi Controller 4. Wiring Diagrams Outdoor Unit Multi Controller 5. Refrigeration Circuit Outdoor Unit Multi Controller 6. Display Information and Fault Codes 7.

  • Page 22: Outdoor Units

    TOSHIBA 1. Specifications OUTDOOR UNITS Model MAR-M81HTM8-E MAR-M101HTM8-E Cooling Capacity 20.0 (22.4) 25.0 (28.0) Heating Capacity 20.0 (25.0) 25.0 (31.5) Power Supply 3ph,380/415v,50Hz Power Consumption (C/H) kW 8.0 / 7.7 10.1 / 10.1 Running Current (C/H) Amps 12.3 / 11.7 15.7 / 15.0...
  • Page 23 TOSHIBA 1. Specifications MULTI CONTROLLERS Model RBM-Y1032E-E RBM-Y1042E-E Number of Branches Gas Pipe (Inlet) Inch 1 1/8 1 1/8 Liquid Pipe (Inlet) Inch Branch Pipes (Gas) Inch 3/4 x 3 3/4 x 4 Branch Pipes (Liquid) Inch 3/8 x 3...
  • Page 24 TOSHIBA 2. Basic Permutations of Indoor to Outdoor Units The indoor units are given a code number according to their capacity rank - see below Model Number Code Number RAV103 RAV132/133 RAV453/160/1/2/3 RAV202/3 RAV713/260/1/2/3 RAV1003/360/1/2/3 RAV1253/460/1/2/3 Multiple indoor units may be connected to one outdoor unit, providing the total indoor code does not exceed the outdoor unit code number.
  • Page 25 TOSHIBA CONSTRUCTION VIEWS MAR-M81HTM8E-E MAR-M101FHTM8E-E 98 mm 790 mm 824 mm 90 mm 750 mm 610 mm 375 mm 130 mm 160 mm AUGUST 1997 Page 6...
  • Page 26 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1032E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more...
  • Page 27 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1042E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more or more...
  • Page 28 TOSHIBA 4. Schematic Wiring Diagrams Outdoor Unit Reactor Giant Electric Starter Contactor Transistor Rectifier Smoothing Circuit 52C1 λ 2200 F/400v x 2 47k Ω /20W x 2 ℜ Noise Filter Contactor 52C2 U V W 1 2 3 4 ℜ...
  • Page 29 TOSHIBA 4. Schematic Wiring Diagrams Multi Controllers PMVA PMVB PMVC PMVD Transformer Sump Heater PJ 16 PJ 8 PJ 9 PJ 6 PJ 7 PJ 1 PJ 3 PJ 4 PJ 5 PJ 2 Float PJ 14 Switch LD 1...
  • Page 30 TOSHIBA 5. Schematic Refrigeration Diagram Outdoor Unit INVERTER COMPRESSOR H.P. SWITCH EXPANSION SERVICE VALVE PRESSURE VALVE ThD1 SENSOR PRESSURE INVERTER SWITCH COMPRESSOR DRIER LIQUID TANK HEAT CHECK VALVE EXCHANGER D.O.L. COMPRESSOR ThD2 HIGH PRESSURE RELEASE 4-WAY VALVE D.O.L. SERVICE H.P.SWITCH...
  • Page 31 TOSHIBA 5. Schematic Refrigeration Diagram Multi Controller INDOOR UNIT EXPANSION VALVE PMV(A) STRAINER BRANCH A CHECK VALVE EXPANSION VALVE PMV(B) LIQUID PIPE STRAINER STRAINER BRANCH B CHECK VALVE EXPANSION VALVE PMV(C) STRAINER BRANCH C CHECK VALVE EXPANSION VALVE PMV(D) STRAINER...
  • Page 32 TOSHIBA 6. Fault Code and Display Information Fault Codes Before reading the fault codes do not turn the power off as doing so will wipe the diagnostic memory. Caution must be taken when removing the access covers as high voltages are present.
  • Page 33 TOSHIBA 6. Fault Code and Display Information Display switch information Multicontroller Switch position Information System Communication Fault Codes Level of Demand Oil Retrieval, Superheat, Defrost Operating Mode Restart Timer Circuit Test (commissioning only) PMV(A) Position PMV(B) Position PMV(C) Position PMV(D) Position...
  • Page 34 TOSHIBA 6. Fault Code and Display Information Multi Controller Display Switch Information Switch Indicates LD 1 LD 2 Pos. |_| | |_ _ |_| | |_ _ |_| | |_ _ |_| | |_ _ Serial From B To B...
  • Page 35 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information The operating status of the outdoor unit and fault diagnosis can be made using both the display selector switch (on the interface pcb) and the eight red light emitting diodes on the interface printed circuit board.
  • Page 36 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information cont. d. Display switch set to position “3” identifies a fault condition in the outdoor unit. Details are in the fault code chart on page 13 e. Display switch set to positions “4, 5, 6 & 7” identifies the indoor unit capacity code for each branch.
  • Page 37 TOSHIBA 7. Circuit Test Procedure These systems have a feature which enables them to check that the wiring and piping connections are aligned with each other. This is carried out by allowing refigerant flow to one indoor unit at a time and monitoring that indoor unit’s coil sensor for a corresponding drop in temperature.
  • Page 38 TOSHIBA 8. Calculating The Additional Gas Charge Branch Pipes RAV-103 ; 0.030 kg/m RAV-133 ; 0.030 kg/m Main Pipes RAV-162 ; 0.030 kg/m Sub Pipes 0.19 kg/m RAV-202 ; 0.030 kg/m 0.125 kg/m RAV-262 ; 0.045 kg/m RAV-362 ; 0.045 kg/m RAV-462 ;...
  • Page 39 TOSHIBA SERVICE MANUAL AIR CONDITIONER HEAT PUMP MULTI SPLIT (2-PIPE) Outdoor Units MAR - M81HTM8 - E MAR - M101HTM8 - E Multi Controllers RBM - Y1032E - E RBM - Y1042E - E AUGUST 1997 Page 1...
  • Page 40 TOSHIBA Contents 1. Specifications Outdoor Unit Multi Controller 2. Basic Permutations / Capabilities 3. Dimensional Views Outdoor Unit Multi Controller 4. Wiring Diagrams Outdoor Unit Multi Controller 5. Refrigeration Circuit Outdoor Unit Multi Controller 6. Display Information and Fault Codes 7.
  • Page 41 TOSHIBA 1. Specifications OUTDOOR UNITS Model MAR-M81HTM8-E MAR-M101HTM8-E Cooling Capacity 20.0 (22.4) 25.0 (28.0) Heating Capacity 20.0 (25.0) 25.0 (31.5) Power Supply 3ph,380/415v,50Hz Power Consumption (C/H) kW 8.0 / 7.7 10.1 / 10.1 Running Current (C/H) Amps 12.3 / 11.7 15.7 / 15.0...
  • Page 42 TOSHIBA 1. Specifications MULTI CONTROLLERS Model RBM-Y1032E-E RBM-Y1042E-E Number of Branches Gas Pipe (Inlet) Inch 1 1/8 1 1/8 Liquid Pipe (Inlet) Inch Branch Pipes (Gas) Inch 3/4 x 3 3/4 x 4 Branch Pipes (Liquid) Inch 3/8 x 3...
  • Page 43 TOSHIBA 2. Basic Permutations of Indoor to Outdoor Units The indoor units are given a code number according to their capacity rank - see below Model Number Code Number RAV103 RAV132/133 RAV453/160/1/2/3 RAV202/3 RAV713/260/1/2/3 RAV1003/360/1/2/3 RAV1253/460/1/2/3 Multiple indoor units may be connected to one outdoor unit, providing the total indoor code does not exceed the outdoor unit code number.
  • Page 44 TOSHIBA CONSTRUCTION VIEWS MAR-M81HTM8E-E MAR-M101FHTM8E-E 98 mm 790 mm 824 mm 90 mm 750 mm 610 mm 375 mm 130 mm 160 mm AUGUST 1997 Page 6...
  • Page 45 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1032E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more...
  • Page 46 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1042E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more or more...
  • Page 47 TOSHIBA 4. Schematic Wiring Diagrams Outdoor Unit Reactor Giant Electric Starter Contactor Transistor Rectifier Smoothing Circuit 52C1 λ 2200 F/400v x 2 47k Ω /20W x 2 ℜ Noise Filter Contactor 52C2 U V W 1 2 3 4 ℜ...
  • Page 48 TOSHIBA 4. Schematic Wiring Diagrams Multi Controllers PMVA PMVB PMVC PMVD Transformer Sump Heater PJ 16 PJ 8 PJ 9 PJ 6 PJ 7 PJ 1 PJ 3 PJ 4 PJ 5 PJ 2 Float PJ 14 Switch LD 1...
  • Page 49 TOSHIBA 5. Schematic Refrigeration Diagram Outdoor Unit INVERTER COMPRESSOR H.P. SWITCH EXPANSION SERVICE VALVE PRESSURE VALVE ThD1 SENSOR PRESSURE INVERTER SWITCH COMPRESSOR DRIER LIQUID TANK HEAT CHECK VALVE EXCHANGER D.O.L. COMPRESSOR ThD2 HIGH PRESSURE RELEASE 4-WAY VALVE D.O.L. SERVICE H.P.SWITCH...
  • Page 50 TOSHIBA 5. Schematic Refrigeration Diagram Multi Controller INDOOR UNIT EXPANSION VALVE PMV(A) STRAINER BRANCH A CHECK VALVE EXPANSION VALVE PMV(B) LIQUID PIPE STRAINER STRAINER BRANCH B CHECK VALVE EXPANSION VALVE PMV(C) STRAINER BRANCH C CHECK VALVE EXPANSION VALVE PMV(D) STRAINER...
  • Page 51 TOSHIBA 6. Fault Code and Display Information Fault Codes Before reading the fault codes do not turn the power off as doing so will wipe the diagnostic memory. Caution must be taken when removing the access covers as high voltages are present.
  • Page 52 TOSHIBA 6. Fault Code and Display Information Display switch information Multicontroller Switch position Information System Communication Fault Codes Level of Demand Oil Retrieval, Superheat, Defrost Operating Mode Restart Timer Circuit Test (commissioning only) PMV(A) Position PMV(B) Position PMV(C) Position PMV(D) Position...
  • Page 53 TOSHIBA 6. Fault Code and Display Information Multi Controller Display Switch Information Switch Indicates LD 1 LD 2 Pos. |_| | |_ _ |_| | |_ _ |_| | |_ _ |_| | |_ _ Serial From B To B...
  • Page 54 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information The operating status of the outdoor unit and fault diagnosis can be made using both the display selector switch (on the interface pcb) and the eight red light emitting diodes on the interface printed circuit board.
  • Page 55 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information cont. d. Display switch set to position “3” identifies a fault condition in the outdoor unit. Details are in the fault code chart on page 13 e. Display switch set to positions “4, 5, 6 & 7” identifies the indoor unit capacity code for each branch.
  • Page 56 TOSHIBA 7. Circuit Test Procedure These systems have a feature which enables them to check that the wiring and piping connections are aligned with each other. This is carried out by allowing refigerant flow to one indoor unit at a time and monitoring that indoor unit’s coil sensor for a corresponding drop in temperature.
  • Page 57 TOSHIBA 8. Calculating The Additional Gas Charge Branch Pipes RAV-103 ; 0.030 kg/m RAV-133 ; 0.030 kg/m Main Pipes RAV-162 ; 0.030 kg/m Sub Pipes 0.19 kg/m RAV-202 ; 0.030 kg/m 0.125 kg/m RAV-262 ; 0.045 kg/m RAV-362 ; 0.045 kg/m RAV-462 ;...
  • Page 58 TOSHIBA SERVICE MANUAL AIR CONDITIONER HEAT PUMP MULTI SPLIT (2-PIPE) Outdoor Units MAR - M81HTM8 - E MAR - M101HTM8 - E Multi Controllers RBM - Y1032E - E RBM - Y1042E - E AUGUST 1997 Page 1...
  • Page 59 TOSHIBA Contents 1. Specifications Outdoor Unit Multi Controller 2. Basic Permutations / Capabilities 3. Dimensional Views Outdoor Unit Multi Controller 4. Wiring Diagrams Outdoor Unit Multi Controller 5. Refrigeration Circuit Outdoor Unit Multi Controller 6. Display Information and Fault Codes 7.
  • Page 60 TOSHIBA 1. Specifications OUTDOOR UNITS Model MAR-M81HTM8-E MAR-M101HTM8-E Cooling Capacity 20.0 (22.4) 25.0 (28.0) Heating Capacity 20.0 (25.0) 25.0 (31.5) Power Supply 3ph,380/415v,50Hz Power Consumption (C/H) kW 8.0 / 7.7 10.1 / 10.1 Running Current (C/H) Amps 12.3 / 11.7 15.7 / 15.0...
  • Page 61 TOSHIBA 1. Specifications MULTI CONTROLLERS Model RBM-Y1032E-E RBM-Y1042E-E Number of Branches Gas Pipe (Inlet) Inch 1 1/8 1 1/8 Liquid Pipe (Inlet) Inch Branch Pipes (Gas) Inch 3/4 x 3 3/4 x 4 Branch Pipes (Liquid) Inch 3/8 x 3...

  • Page 62: Rav103

    TOSHIBA 2. Basic Permutations of Indoor to Outdoor Units The indoor units are given a code number according to their capacity rank - see below Model Number Code Number RAV103 RAV132/133 RAV453/160/1/2/3 RAV202/3 RAV713/260/1/2/3 RAV1003/360/1/2/3 RAV1253/460/1/2/3 Multiple indoor units may be connected to one outdoor unit, providing the total indoor code does not exceed the outdoor unit code number.
  • Page 63 TOSHIBA CONSTRUCTION VIEWS MAR-M81HTM8E-E MAR-M101FHTM8E-E 98 mm 790 mm 824 mm 90 mm 750 mm 610 mm 375 mm 130 mm 160 mm AUGUST 1997 Page 6...
  • Page 64 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1032E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more...
  • Page 65 TOSHIBA DIMENSIONAL DRAWINGS RBM-Y1042E-E Oval holefor hanging bolt Slit for hanging bolt 15 mm 560 mm 590 mm 90 mm 170 mm 170 mm 490 mm 90 mm Electric Parts Box 500 mm 100 mm 50 mm or more or more...
  • Page 66 TOSHIBA 4. Schematic Wiring Diagrams Outdoor Unit Reactor Giant Electric Starter Contactor Transistor Rectifier Smoothing Circuit 52C1 λ 2200 F/400v x 2 47k Ω /20W x 2 ℜ Noise Filter Contactor 52C2 U V W 1 2 3 4 ℜ...
  • Page 67 TOSHIBA 4. Schematic Wiring Diagrams Multi Controllers PMVA PMVB PMVC PMVD Transformer Sump Heater PJ 16 PJ 8 PJ 9 PJ 6 PJ 7 PJ 1 PJ 3 PJ 4 PJ 5 PJ 2 Float PJ 14 Switch LD 1...
  • Page 68 TOSHIBA 5. Schematic Refrigeration Diagram Outdoor Unit INVERTER COMPRESSOR H.P. SWITCH EXPANSION SERVICE VALVE PRESSURE VALVE ThD1 SENSOR PRESSURE INVERTER SWITCH COMPRESSOR DRIER LIQUID TANK HEAT CHECK VALVE EXCHANGER D.O.L. COMPRESSOR ThD2 HIGH PRESSURE RELEASE 4-WAY VALVE D.O.L. SERVICE H.P.SWITCH...
  • Page 69 TOSHIBA 5. Schematic Refrigeration Diagram Multi Controller INDOOR UNIT EXPANSION VALVE PMV(A) STRAINER BRANCH A CHECK VALVE EXPANSION VALVE PMV(B) LIQUID PIPE STRAINER STRAINER BRANCH B CHECK VALVE EXPANSION VALVE PMV(C) STRAINER BRANCH C CHECK VALVE EXPANSION VALVE PMV(D) STRAINER...
  • Page 70 TOSHIBA 6. Fault Code and Display Information Fault Codes Before reading the fault codes do not turn the power off as doing so will wipe the diagnostic memory. Caution must be taken when removing the access covers as high voltages are present.
  • Page 71 TOSHIBA 6. Fault Code and Display Information Display switch information Multicontroller Switch position Information System Communication Fault Codes Level of Demand Oil Retrieval, Superheat, Defrost Operating Mode Restart Timer Circuit Test (commissioning only) PMV(A) Position PMV(B) Position PMV(C) Position PMV(D) Position...
  • Page 72 TOSHIBA 6. Fault Code and Display Information Multi Controller Display Switch Information Switch Indicates LD 1 LD 2 Pos. |_| | |_ _ |_| | |_ _ |_| | |_ _ |_| | |_ _ Serial From B To B...
  • Page 73 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information The operating status of the outdoor unit and fault diagnosis can be made using both the display selector switch (on the interface pcb) and the eight red light emitting diodes on the interface printed circuit board.
  • Page 74 TOSHIBA 6. Fault Code and Display Information Outdoor Unit Display Switch Information cont. d. Display switch set to position “3” identifies a fault condition in the outdoor unit. Details are in the fault code chart on page 13 e. Display switch set to positions “4, 5, 6 & 7” identifies the indoor unit capacity code for each branch.
  • Page 75 TOSHIBA 7. Circuit Test Procedure These systems have a feature which enables them to check that the wiring and piping connections are aligned with each other. This is carried out by allowing refigerant flow to one indoor unit at a time and monitoring that indoor unit’s coil sensor for a corresponding drop in temperature.

  • Page 76: Rav202/3

    TOSHIBA 8. Calculating The Additional Gas Charge Branch Pipes RAV-103 ; 0.030 kg/m RAV-133 ; 0.030 kg/m Main Pipes RAV-162 ; 0.030 kg/m Sub Pipes 0.19 kg/m RAV-202 ; 0.030 kg/m 0.125 kg/m RAV-262 ; 0.045 kg/m RAV-362 ; 0.045 kg/m RAV-462 ;...

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Rbm - y1042e - eMar - m101htm8 - eRbm - y1032e - eMar-m81htm8-eMar-m101htm8-eRbm-y1032e-e ... Show all

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