Toshiba HFC R407C Service Manual
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Toshiba HFC R407C Service Manual

Toshiba HFC R407C Service Manual

Super multi split type system
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A90-0233
Super
Multi System
Service Manual
Air Conditioner - Multi Split Type System
HFC
R407C

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Summary of Contents for Toshiba HFC R407C

  • Page 1 A90-0233 Super Multi System Service Manual Air Conditioner - Multi Split Type System R407C...

  • Page 3: Table Of Contents

    Contents Introduction Precautions ............................4 Components ............................6 Outline of control system ........................9 Parts specification Outdoor unit - general ......................... 12 Outdoor unit - refrigeration parts ......................13 Outdoor unit - inverter assembly ......................14 Multi Controller - general ........................15 Construction views Outdoor unit ............................

  • Page 4: Introduction Precautions

    Introduction Precautions Please read these instructions carefully before starting the installation. This equipment should only be installed by suitably trained operatives. In all cases ensure safe working practice: Observe precautions for persons in the vicinity of the works. Ensure that all local, national and international regulations are satisfied. Check that the electrical specifications of the unit meet the requirements of the site.
  • Page 5 Explanation of Toshiba serial number A serial label is attached to all Toshiba air conditioning units. Located on the label is an 8-digit number, which represents the month, year and batch number of the manufactured unit. A breakdown of the 8-digit number is defined below.

  • Page 6: Components

    Introduction Components Components - 3 pipe system Outdoor unit Model name Inverter unit MAR-F105HTM8-PE 10 HP Multi Controllers Model name No. of indoor units connectable RBM-Y1034F-PE RBM-Y1044F-PE Interface control kit Model name Requirement RBC-16DIF1-PE 3 or 4 Multi Controllers used on a system Combination of Multi Controllers, indoor units and interface kits No.

  • Page 7: Operating Conditions

    Introduction Operating conditions • Operating conditions of the unit are as follows: Outdoor temperature -5 ~ 43°C Cooling -15 ~ 21°C Heating Room temperature 18 ~ 32°C Cooling 15 ~ 29°C Heating Room humidity <80% Cooling Note 1: Cooling capacity is rated at the following temperature conditions: Indoor air inlet temperature 27°C DB, 19°C WB.
  • Page 8 Introduction Super multi system basic components 3-pipe heat pump with simultaneous heating and cooling This system allows separate operation of each indoor unit in either heating or cooling simultaneously. Indoor unit remote controller requesting cooling 3-pipe outdoor unit Cooling operation Indoor unit remote controller requesting heating T-pieces Multi Controller...

  • Page 9: Outline Of Control System

    Introduction Outline of control system The refrigerant and electrical systems of the Super Multi air conditioner are controlled by the Multi Controller and the outdoor unit microprocessors. All RAV heat pump, R-407C, 4/5 series indoor units are compatible with the Super Multi system, i.e. 1~5 HP . For system operation, initially the microprocessor in each indoor unit calculates the difference between the current room temperature (TA) and the requested temperature which has been set on the remote controller.
  • Page 10 Introduction Components Setting of indoor unit capacity codes • The setting of the indoor unit capacities is important. Set the correct indoor unit code numbers according to the indoor unit capacity. The capacities are set by the rotary switches on the printed circuit board switch A (unit A), switch B (unit B), switch C (unit C) and switch D (unit D).

  • Page 11: Indoor Units

    Introduction Components Indoor units Type Appearance Model name Capacity code on Multi Controller Cassette (4-way) RAV-164UH-PE RAV-264UH-PE RAV-364UH-PE RAV-464UH-PE Cassette (2-way) RAV-104TUH-1-PE RAV-134TUH-1-PE RAV-164TUH-1-PE RAV-104SBH-PE Built-In Horizontal RAV-164BH-PE RAV-264BH-PE RAV-364BH-PE RAV-464BH-PE Ceiling Suspended RAV-134CH/CHR-PE 3 RAV-164CH/CHR-PE 4 RAV-264CH/CHR-PE 6 RAV-364CH/CHR-PE 8 RAV-464CH/CHR-PE 10 High Wall RAV-105KH-E...

  • Page 12: Parts Specification

    Parts specification Outdoor unit Specification of 3-pipe, heat recovery outdoor unit Model name MAR-F105HTM8-PE Cooling capacity 25.0 (28.0) Heating capacity 28.0 (31.5) Power supply 380-415 V, 3 phase, 50 Hz Cooling Operating current 17.4 (19.1) Power consumption 11.8 (12.8) 2.11 (2.19) Power factor 98 (97) Heating...
  • Page 13 Parts specification Outdoor unit Specification of outdoor unit refrigeration cycle parts Parts description MAR-F105HTM8-PE Compressor model Model name MG1300CW-20 Motor type 3-phase induction motor Power supply 380-415 V, 3 phase, 50 Hz Output Pole 2/2 (inverter side/non-inverter side) Ω Coil resistance 1.49/2.51 (inverter side/non-inverter side) Compressor oil name Polyolester NISSEKI RB68AF VG 74...

  • Page 14: Outdoor Unit - Inverter Assembly

    Parts specification Outdoor unit Specification of outdoor unit inverter assembly parts Model name MAR-F105HTM8-PE Power supply 380-415 V, 3 phase, 50 Hz PC board assembly PCB (IPDU) MCC-1342 PC board assembly PCB (noise filter) MCC-1366 PC board assembly PCB (interface) MCC-1223 PC board assembly PCB (communication)
  • Page 15 Parts specification Multi Controller unit Specification of 3-pipe Multi Controller parts Model name RBM-Y1034F-PE RBM-Y1044F-PE Pulse modulating valve EV23RC7, coil DC 12 V Temperature sensor At 0°C = 32.8 kΩ, 25°C = 10 kΩ, 50°C = 3.6 kΩ Float switch FS-085-0031 PC board assembly PCB MCC-1222...
  • Page 16 Construction view Outdoor unit MAR-F105HTM8-PE Dimensional drawings 4-15 x 20 (Slot) 4 - ø 25 Grounding part of bottom plate drain holes Grounding part of bottom plate Fixing bolt pitch Foundation dimensions Pipe outlet (bottom) 1700 1582 Knock outs on 3-ø...

  • Page 17: Multi Controller - General

    Construction view Multi Controller Model RBM-Y1034F-PE 460 RBM-Y1044F-PE 530 All dimensions are in mm 2 slots for hanging bolts (12 x 52) 2 notches for hanging bolts (12 x 21) Electric parts box 3-pipe: RBM-Y1034F/Y1044F-PE Refrigerant pipe connection (brazing) Connection (brazing) Liquid side ø...

  • Page 18: Outdoor Unit

    Wiring diagrams Outdoor unit MAR-F105HTM8-PE...
  • Page 19 Wiring diagrams Outdoor unit...

  • Page 20: Multi Controller

    Wiring diagram Multi Controllers 3-pipe Multi Controller (RBM-Y1034F-PE, RBM-Y1044F-PE) Spark killer 7-segment LED Capacity rank setting Display A B C D selector switch Indoor Indoor Indoor Outdoor Indoor unit A unit C unit D unit unit B Symbol Part Name PMVA, B, C, D Pulse modulating valve Th A, B, C, D, X...
  • Page 21 Refrigeration piping schematic diagram Outdoor unit...

  • Page 22: Normal Operation - Heat Mode

    Refrigeration piping schematic diagram Normal operation - heat mode...

  • Page 23: Normal Operation - Cool Mode

    Refrigeration piping schematic diagram Normal operation - cool mode...

  • Page 24: Simultaneous Operation - Mainly Heat

    Refrigeration piping schematic diagram Simultaneous operation - mainly heat...

  • Page 25: Simultaneous Operation - Mainly Cool

    Refrigeration piping schematic diagram Simultaneous operation - mainly cool...

  • Page 26: Diagnostic Procedure

    Diagnostic procedure Outdoor unit MAR-F104HTM8-PE, 3-pipe outdoor unit Malfunction judgement is performed using the self-diagnostic function of the outdoor unit. The combination of the display switches (SW1, SW2) and the LEDs (LD 71~LD 74) indicates the diagnostic details. Located on the electrical inverter cover is a transparent window, which allows the 7-segment LED to be viewed while the unit is in operation.
  • Page 27 Diagnostic procedure Outdoor unit Communication serial signals and the system operating status are displayed by changing display switch SW2. Display Display Indication 7-segment LED display switch switch LD 71 LD 72 LD73 LD74 position position Sending/receiving status of Between Between Between Non-inverter interface control board serial...
  • Page 28 Diagnostic procedure Outdoor unit Display code conversion table - instruction frequency from Multi Controller. Display code Frequency 10.0 13.0 16.2 19.3 22.4 25.5 28.6 31.7 34.8 37.9 41.0 conversion value (Hz) Display code Frequency 44.1 47.2 50.3 53.4 56.5 59.6 62.7 65.8 68.9 72.0 75.1 78.2 81.3 84.4 87.5 90.0 conversion value (Hz) Display code conversion table - operating frequency of inverter compressor...
  • Page 29 Diagnostic procedure Outdoor unit The indoor unit capacity rank setting is displayed. Display Display Indication 7-segment LED display switch switch LD 71 LD 72 LD 73 LD 74 position position Outdoor unit HP 8 HP [8], 10 HP [A] Capacity rank of Unit A [A] Displays the code number of the indoor unit Unit B [b]...
  • Page 30 Diagnostic procedure Outdoor unit Outdoor unit - pressure sensor data Display Pressure Display Pressure Display Pressure Display Pressure (kgf/cm (kgf/cm (kgf/cm (kgf/cm 11.0 17.5 24.0 11.5 18.0 24.5 12.0 18.5 25.0 12.5 19.0 25.5 13.0 19.5 26.0 13.5 20.0 26.5 14.0 20.5 27.0...
  • Page 31 Diagnostic procedure Outdoor unit circuit test procedure 12. Outdoor unit 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 refrigerant to flow to one indoor unit at a time and monitoring that indoor unit’s coil sensor for a corresponding drop in temperature.
  • Page 32 Diagnostic procedure Multi Controller The combination of the display switch and the four 7-segment LEDs (LD 101-LD 104) indicates the diagnostic details. MCC - 1223 7-segment LED LD 102 LD 104 LD 101 LD 103 Unit D Unit B Unit A Unit C Display switch Capacity rank switches...
  • Page 33 Diagnostic procedure Multi Controller Display switch set to position “11”, “12”, “13” and “14” Multi Controller - ThA, B, C, D and X sensor conversion table Display Temp. °C Display Temp. °C Display Temp. °C Display Temp. °C -10.0 12.0 23.0 -9.0 13.0...

  • Page 34: Fault Code Display

    Fault code display Self-diagnostic function The remote controller, Multi Controller and outdoor unit have the facility to display fault codes which are used to determine any malfunction of the system. • The remote controller is provided with a “check” button and a check display. •...
  • Page 35 Fault code display Self-diagnostic function Details of the malfunction check display The following fault code display occurs when the check button is pressed for 1 second. (Note: Up to 16 indoor units can be connected to one remote controller using group control.) 2 fault codes for each of the 16 indoor units can be displayed at 2 second intervals.
  • Page 36 Fault code display Self-diagnostic function Remote controller fault code Multi Controller fault code Outdoor fault code No communication signal between Interface PCB and IPDU 04 No communication signal between Interface PCB and IPDU No communication signal between Interface PCB and 04 No communication signal between M/C and O/D No communication signal between M/C and O/D.

  • Page 37: Troubleshooting

    Troubleshooting Diagnostic procedure for check code Check code Status of air conditioner Operation cause [04] Outdoor unit stops 1. Wiring fault between indoor and Multi Inverter serial signal Indoor unit fan continues Controller or Multi Controller and outdoor short circuit interface PC board.
  • Page 38 Troubleshooting Diagnostic procedure for check code Check code Operation cause [08] 1. 4-way valve operation error. 4-way valve reversal alarm 2. TS sensor/TE sensor error. 3. Pd sensor error. 4. Fixed-speed compressor Mg-SW operation error. Is 4-way valve coil connector Modify connector connection connected? (4-way valve coil: CN 317)
  • Page 39 Troubleshooting Diagnostic procedure for check code Check code Operation cause [09] 1. Compressor running but not pumping. No temperature change in TC temperature 2. Bi-Metal thermostat protection device. 3. Compressor wiring. 4. Faulty TC temperature sensor. Is the power supply voltage to the outdoor Modify power supply unit normal?
  • Page 40 Troubleshooting Diagnostic procedure for check code Check code Status of air conditioner Operation cause [0b] Operation stops for Multi 1. Float switch disconnection. Drain pump fault Controller fault. 2. Drain pump operation error. Indoor unit or Multi Indoor unit fan continues for 3. Drain hose blockage. Controller unit fault.
  • Page 41 Troubleshooting Diagnostic procedure for check code Check code Operation cause [11] 1. Fan motor circuit connection error. Indoor fan motor short circuit alarm 2. Capacitor error. 3. Fan motor error. 4. Defective indoor PC board. Does indoor fan operate for a short period after resetting and resuming? Is there a connection error of...
  • Page 42 Troubleshooting Diagnostic procedure for check code Check code Status of air conditioner Operation cause [14] Operation stops 1. Outdoor unit power supply error. IPDU short circuit 2. Wiring error on IPDU PC board. protective operation 3. AC fuse disconnection. alarm (Power Transistor) 4.
  • Page 43 Troubleshooting Diagnostic procedure for check code Check code Operation cause [17] 1. Defective wiring of IPDU PC board. Current detection circuit alarm 2. Defective IPDU PC board. Refer to outdoor unit Is wiring connector on IPDU PC Modify connection of wiring board normal? Is compressor operation normal? Compressor error...
  • Page 44 Troubleshooting Diagnostic procedure for check code Check code Status of air conditioner Operation cause [1d] Operation stops 1. Outdoor unit power source error. Compressor error alarm 2. Inverter compressor circuit system error. Refer to outdoor unit 3. Inverter compressor error. 4.
  • Page 45 Troubleshooting Diagnostic procedure for check code Check code Status of air conditioner Operation cause [1F] Operation stops 1. Outdoor unit power source error. Compressor break down 2. Inverter compressor circuit system error. Refer to outdoor unit 3. IPDU PC board error. Is the power source voltage of the Confirm the power source supply.
  • Page 46 Troubleshooting Diagnostic procedure for check code Check code Operation cause [21] 1. Inverter high pressure SW error. Inverter high pressure SW system alarm 2. Inverter IOL operation. 3. Service valve closed. 4. Outdoor fan, capacitor error. 5. Indoor/Outdoor PMV blockage. 6.
  • Page 47 Troubleshooting Diagnostic procedure for check code Are the Does heating indoor fan connection and fan operate normally? motor normal? Repair defective Are the Multi Controller PMV/ position solenoid valves normal? Are the connector connection and coil normal? Repair defective position Is there any element to block heat exchange in the room? (1) Filter blockage...
  • Page 48 Troubleshooting Diagnostic procedure for check code Check code Operation cause [E5] 1. Inverter IOL operation. Inverter IOL operation 2. Service valve closed. 3. Outdoor PMV 1 error. 4. Miswiring of communication between indoor and outdoor unit. Is IOL circuit normal? 1.
  • Page 49 Troubleshooting Diagnostic procedure for check code Check code Operation cause [80] Gas temp. sensor (Tha) short circuit Tha sensor open/short Open/short of Tha sensor was detected. Check connector (Tha sensor: PJ1) and characteristics of sensor resistance value. When sensor is normal, replace interface PC board of the Multi Controller. Check code Operation cause [81]...
  • Page 50 Troubleshooting Diagnostic procedure for check code Check code Operation cause [88] 1. Error connection between Multi Controller Communication alarm between Multi Controller and outdoor unit. and outdoor unit 2. Outdoor PC board error (MCC-1223). 3. Multi Controller PC board error (MCC-1210). 4.
  • Page 51 Troubleshooting Diagnostic procedure for check code Check code Operation cause [8A] 1. Multi Controller PC board error. Multi Controller PC board malfunction Check lead connection between indoor unit and Multi Controller and outdoor unit. If no error is detected, replace Multi Controller board (MCC-1210). Check code Operation cause [97]...
  • Page 52 Troubleshooting Diagnostic procedure for check code Check code Operation cause [98] 1. Miswiring of XY communication cables. Central management address set-up fault 2. Duplicated network addresses. 3. Indoor PC board error, central controller error. Is the wiring connection of Check connection of wiring. communication cables to X,Y normal? Is [98] displayed only on the central controller?
  • Page 53 Troubleshooting Diagnostic procedure for check code Check code Status of air conditioner Operation cause [99] Indoor unit stops 1. Remote controller circuit connection error. Remote controller serial 2. Duplicated indoor No.1 units. signal circuit alarm 3. Remote controller error. 4. Indoor PC board error. Are A, B, C internal wires normal? Check connection of wiring.
  • Page 54 Troubleshooting Diagnostic procedure for check code Check code Operation cause [A0] Discharge temp. sensor (TD1) short circuit TD1 sensor open/short Open/short of TD1 sensor was detected. Check connector (TD1 sensor: PJ1) and characteristics of sensor resistance value. When sensor is normal, replace interface PC board of the outdoor unit. Check code Operation cause [A1]...
  • Page 55 Troubleshooting Diagnostic procedure for check code Check code Operation cause [A6] 1. Outdoor unit service valve closed. Discharge temperature TD1 and TD2 alarm 2. Cooling bypass PMV error. (>130°C) 3. TD sensor error. 4. Insufficient refrigerant, blockage in pipe. 5. Blockage of PMV assembly on the liquid line. Are the gas pipe and liquid pipe Open valves fully.
  • Page 56 Troubleshooting Diagnostic procedure for check code Check code Operation cause [A7] 1. Outdoor unit service valve closed. Suction temperature (TS) alarm (>40°C) 2. Blockage PMV assembly on the liquid line. 3. TS pressure switch error. 4. Insufficient refrigerant, blockage in pipe. Are the gas pipe and liquid pipe service valves of the outdoor unit Open valves fully.
  • Page 57 Troubleshooting Diagnostic procedure for check code Check code Operation cause [Ad] 1. Fixed-speed compressor high pressure SW error. Fixed-speed compressor fault 2. Fixed-speed compressor IOL operation. 3. Service valve closed. 4. Outdoor fan, capacitor error. 5. Multi Controller/outdoor PMV blockage. 6.
  • Page 58 Troubleshooting Diagnostic procedure for check code Are the connection Does heating indoor fan and outdoor fan motor operate normally? normal? Repair defective Is the Multi Controller PMV/ connection. solenoid valve normal? Are the connector connection and coil normal? Repair defective position.
  • Page 59 Troubleshooting Diagnostic procedure for check code Check code Operation cause [E6] 1. Power supply error. Fixed-speed IOL, OL alarm 2. Fixed-speed compressor IOL operation. 3. Service valve closed. 4. Blockage in Multi Controller PMV/outdoor PMV 1. 5. Miswiring of communication between indoor and outdoor units. OCR: Overload Current Relay Are the following items related to power supply...
  • Page 60 Troubleshooting Diagnostic procedure for check code Check code Operation cause [AE] 1. Ps pressure switch error. Low pressure fault (Ps) 2. Ps switch connection error. Detected by low pressure switch <0.02 MPa 3. Compressor compressing error. 4. 4-way valve error. 5.
  • Page 61 Troubleshooting Diagnostic procedure for check code Check code Operation cause [b5] 1. External device error. External input display fault 2. Indoor PC board error. [b6] External interlock display fault Fault on CN17 - fault on external device (accessory) Check indoor PC board. Is the external device connected If defective, replace.
  • Page 62 Troubleshooting Diagnostic procedure for check code Check code Operation cause [dA] 1. Power supply failure. Abnormal overheat of heat sink 2. Outdoor fan error. Refer to outdoor unit 3. Heat sink installation failure. 4. Blockage of heat sink cooling duct. 5.

  • Page 63: Control Features

    Control features Outdoor unit No. Control Description Diagram Defrost • During heating operation, defrost is Temp. (Heating mode) controlled by the outdoor unit heat (°C) exchanger temperature sensor (TE). • When the cumulative operating time with TE in zone [A] has amounted to 25 minutes, defrost operation starts.
  • Page 64 Control features Outdoor unit/Multi Controller No. Control Description Simultaneous a. Changeover between cooling and heating operations for each indoor unit. cooling/heating operation The solenoid valves inside the Multi Controller are energised when operation commands are sent from the indoor units. •...

  • Page 65: Valve And Sensor Function And Operation

    Valve and sensor function and operation Multi Controller Multi Controller - valve functions Symbol Name of valve Description of function PMV (A, B, C, D) Flow rate control valve This opens to the extent corresponding to the capacity and performance required of each indoor unit. SVS (A, B, C, D) Suction gas valve Opens when commands from the indoor units require...

  • Page 66: Outdoor Unit Valve Functions

    Valve and sensor function and operation Outdoor unit Outdoor unit - valve functions Symbol Name of valve Description of function 20SF 4-way reversing valve OFF: Normal operation. (4-way valve) Cooling operation ON: Low load condition when sub heat exchanger is required.

  • Page 67: Manual Operation Of Valves

    Valve and sensor function and operation Valve operation Outdoor unit - valve operation Outdoor operation mode 20SF SV15 SV13 SV14 SV16 SV17 PMV2 Cooling operation Outdoor main heat exchanger Sub heat exchanger Heating operation Simultaneous Outdoor main heat Opening degree cooling-dominant exchanger control...

  • Page 68: Sensor And Switch Operation

    Valve and sensor function and operation Sensor and switch operation Multi Controller sensor operation Temperature According to a difference between the evaporator outlet temperature and sensor (ThA, B, C, D) saturation temperature (ThX): a. Performs superheat control. (cooling operation) b. Determines the degree of opening of PMV 2. (cooling-dominant operation) Outdoor unit sensor and switch operation Discharge pressure...

  • Page 69: Leak Test

    Refrigerant pipe installation Leak test Airtight test Carry out an airtight test after the refrigerant piping is complete. For an airtight test, connect a nitrogen gas bottle as shown, and apply pressure (use oxygen-free nitrogen, OFN). The pressure test must be completed before supplying power to ensure that the Multi Controller PMVs (pulse modulating valves) are open.

  • Page 70: Vacuuming

    Refrigerant pipe installation Vacuuming Leak position check If a pressure drop is detected, check for leakage at connecting points. Locate the leakage by listening, feeling, using foaming agent, etc. - then rebraze or retighten. Air purge The air purge must be completed before supplying power to ensure the Multi Controller’s PMVs are open.

  • Page 71: Charging

    Refrigerant pipe installation Charging the system with additional refrigerant Adding the refrigerant After the airtight test, replace the vacuum pump with a refrigerant bottle to charge the system. Calculating the additional refrigerant required The Super Multi contains sufficient refrigerant to operate an installation having 5 metres of pipework (when delivered).

  • Page 72: Piping

    Additional refrigerant Piping Additional refrigerant One Multi Controller Indoor Outdoor Two Multi Controllers Indoor Outdoor Table 1 - Branch pipes RAV-10* : 0.030 kg/m Three Multi Controllers RAV-13* : 0.030 kg/m RAV-16* : 0.030 kg/m Indoor RAV-26* : 0.045 kg/m Outdoor RAV-36* : 0.045 kg/m RAV-46* : 0.045 kg/m...
  • Page 73 Refrigerant pipe installation Additional refrigerant charging method (1) Loosely connect the refrigerant cylinder hose to the gauge manifold, then open the source valve V the cylinder, purge the air in the hose, and then tighten the hose. (2) As shown in the diagram below, turn the refrigerant cylinder upside down, open the valve V on the gauge manifold, and then charge the liquid side pipe with refrigerant in the liquid state.
  • Page 74 Exploded view and service parts Outdoor unit...
  • Page 75 Exploded view and service parts Outdoor unit...
  • Page 76 Exploded view and service parts Outdoor unit Ref. Service Description Ref. Service Description part No. part No. 43A00020 Plate side (Right) 43A48005 Accumulator 43A00021 Plate side (Left) 43A48006 Liquid tank 43A00022 Air-in cabinet (Front) 43A60013 Fusible plug 43A00023 Air-in cabinet (Back) 43A43018 Condenser assembly - right 43A00024...
  • Page 77 Exploded view and service parts Outdoor unit - inverter assembly Ref. Service Description Ref. Service Description part No. part No. 43A52005 Magnetic contactor - FC - 3 43A34001 Relay 43A58009 Transformer - TT01 43A60016 Terminal block - 3P/60 A 43A55004 MF - capacitor - 8µF/450 V AC 43A55006 Reactor - CH - 25 - 2FK 43A55005 Capacitor - electrolytic - 43A60020 Fuse - 6 A...
  • Page 78 Exploded view and service parts 3-pipe Multi Controller 3-pipe Multi Controller (RBM-Y1034F-PE, RBM-Y1044F-PE) Ref. Service Description Ref. Service Description part No. part No. 43107215 Holder, sensor 43157253 Panel heater (RBM-Y1034F-PE) 43146443 Solenoid coil 43189026 Insulator, liquid A 43046151 2-way valve 43189027 Insulator, liquid B 43046156 Check valve 43189028 Insulator, header A...

  • Page 79: Multi Controller Electrical Parts

    Exploded view and service parts 3-pipe Multi Controller 3-pipe Multi Controller electrical parts assembly (RBM-Y1034F-PE, RBM-Y1044F-PE) Note: Terminal D is present on RBM-Y1044F-PE unit only. Ref. Service Description Ref. Service Description part No. part No. 43158139 Transformer (FT69) 43150166 Sensor (ThX) 43169627 PC board assembly (MCC-1222) 43151242 Micro-switch 43150162 Sensor (ThA)
  • Page 80 MADE IN UK A90-0233 Revised October 2002...

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