Bosch Climate 5000 Series Service Manual
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Bosch Climate 5000 Series Service Manual

Ductless air conditioner / heat pump outdoor unit
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Bosch Ductless Air Conditioner / Heat Pump Outdoor Unit
Climate 5000 Series
Single Zone (Regular, HyperHeat, Light Commercial) ODU
Service Manual

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Summary of Contents for Bosch Climate 5000 Series

  • Page 1 Bosch Ductless Air Conditioner / Heat Pump Outdoor Unit Climate 5000 Series Single Zone (Regular, HyperHeat, Light Commercial) ODU Service Manual...
  • Page 2 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Data subject to change 04.2020 | Bosch Thermotechnology Corp.

  • Page 3: Table Of Contents

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 3 Table of Contents 1 Key to Symbols and Safety Instructions 8.10 Over voltage or too low voltage protection (P1) 8.11 High temperature protection of IPM module or 1.1 Key to Symbols...

  • Page 4: Key To Symbols And Safety Instructions

    4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 1 Key to Symbols and Safety Instructions 1.2 Safety Please read safety precautions before installation 1.1 Key to Symbols Incorrect installation due to ignoring instructions can cause serious damage or injury.
  • Page 5 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 5 WARNING: ELECTRICAL HAZARD CAUTION: CONTAINS REFRIGERANT For all electrical work, follow all local and national wiring This air-conditioning unit contains fluorinated gases. For standards, regulations, and the Installation Manual.

  • Page 6: Part Names And Model Numbers

    6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 2 Part Names and Model Numbers 2.1 Model Numbers Voltage Indoor Type Capacity Indoor Units Regular Outdoor Units Hyper Heat Outdoor Units 115V Wall Mounted...

  • Page 7: Dimensions And Clearances

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 7 3 Dimensions and Clearances Figure 1 Outdoor Unit Dimensions mm (in.) Mounting Dimensions Outdoor Model W x H x D A mm (in.) B mm (in.) BMS500-AAS009-1CSXRA 770x555x300 (30.3x21.85x11.81)

  • Page 8: Installation Details

    8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 4 Installation Details Precharged Max Pipe Max difference Additional charge length Length in height for each ft Capacity 4.1 Torque Requirements (ft / m)

  • Page 9: Adding The Refrigerant To An Existing System

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 9 4.6 Re-Installation / Indoor Unit Needs to be Repaired Make sure the pressure display in the pressure indicator is a little higher than the atmospheric pressure. Then remove the charge hose from the gas service Collecting the refrigerant into the outdoor unit (passive recovery) valve.

  • Page 10: Re-Installation While The Outdoor Unit Needs To Be Repaired

    1 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 4.7 Re-Installation While the Outdoor Unit Needs to be Repaired Refrigerant charging Evacuation for the whole system (Indoor Unit) (Liquid Side) (Outdoor Unit)

  • Page 11: Operation Characteristics

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 11 4.8 Operation Characteristics COOL operation HEAT operation DRY operation 63ºF - 90ºF 32ºF - 86ºF 50ºF - 90ºF Room Temperature 17ºC - 32ºC 0ºC - 30ºC 10ºC - 32ºC...

  • Page 12: Electronic Functions

    1 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 5 Electronic Functions Display may look different depending on IDU type. Display is not available with Compact Cassette (9K, 12K & 5.1 Abbreviation 18k) indoor model.

  • Page 13: Operation Modes And Functions

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 13 5.4 Operation Modes and Functions 5.4.3.2 Outdoor fan operation 5.4.1 Fan mode The outdoor unit will be run at different fan speed according to T4.
  • Page 14 1 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 5.4.3.5 Evaporator coil temperature protection 5.4.6 Forced operation function Forced cooling mode: The compressor and outdoor fan keep running and the indoor fan runs at low speed. After running for 30 minutes, AC will turn to auto mode with 75.2°F (24°C) setting...
  • Page 15 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 15 5.4.9 Auto-restart function 5.4.14 Follow me The indoor unit is equipped with auto-restart function, which is carried out through If the indoor PCB receives the signal which results from pressing the an auto-restart module.
  • Page 16 1 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 5.4.16 Point check function (engineering troubleshooting mode) Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds.
  • Page 17 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 17 When the AC enter into information enquiry status, it will display code value in next 25s, the details are as follows: Enquiry information Display value...

  • Page 18: Error Codes

    1 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 6 Error Codes For other models, please connect discharge resistance (approx.100 40W) between +, - terminals of the electrolytic capacitor on the opposite side of the Safety outdoor PCB.

  • Page 19: Error Codes - 4-Way Cassette Indoor Unit

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 19 6.2 Error Codes - 4-Way Cassette Indoor Unit Operation indicator Number Cause Timer indicator Error Code ashes Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error...

  • Page 20: Error Codes - Ducted Indoor Unit

    2 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 6.3 Error Codes - Ducted Indoor Unit NOTICE If below error codes appear, please turn off the system and contact an Authorized Service Provider.

  • Page 21: Quick Check By Error Codes

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 21 6.4 Quick Check by Error Codes The table below is applicable for Single Zone system only. For detailed trouble shooting guide, please refer to Diagnosis and Solution section.

  • Page 22: Wiring Diagrams

    2 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7 Wiring Diagrams 7.1 ODU PCB & IPM 7.1.1 PCB: Regular 115V Single Zone 12K BMS500-AAS012-0CSXRB Figure 12 Number Name Description Earth: connect to Ground...
  • Page 23 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 23 7.1.2 PCB: Regular Single Zone 9K & 12K BMS500-AAS009-1CSXRA, BMS500-AAS009-1CSXXA, BMS500-AAS012- 1CSXRA, BMS500-AAS012-1CSXXA Figure 13 Number Name Description Earth: connect to Ground Power Supply...
  • Page 24 2 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.1.3 PCB: Regular Single Zone 18K & 24K BMS500-AAS018-1CSXRA, BMS500-AAS018-1CSXXA, BMS500-AAS024-1CSXRA, BMS500-AAS024-1CSXXA 7.1.4 PCB: Hyper Heat Single Zone 9K, 12K & 18K BMS500-AAS009-1CSXHB, BMS500-AAS012-1CSXHB, BMS500-AAS018-1CSXHB...
  • Page 25 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 25 7.1.5 PCB: Hyper Heat Single Zone 24K BMS500-AAS024-1CSXHB 7.1.6 PCB: Light Commercial (for Wall Mounted IDU) 30K & 36K BMS500-AAS030-1CSXRB, BMS500-AAS036-1CSXRB Figure 15 Bosch Thermotechnology Corp. | 04.2020...
  • Page 26 2 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Number Name Description CN30 Current loop communication A, signal wire, connect to the terminal (24V DC Pulse wave) CN29 Current loop communication B, signal wire, connect to the terminal (24V DC Pulse wave)
  • Page 27 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 27 7.1.7 IPM: Hyper Heat Single Zone 24K BMS500-AAS024-1CSXHB 7.1.8 IPM: Light Commercial (for Wall Mounted IDU) 30K & 36K BMS500-AAS030-1CSXRB, BMS500-AAS036-1CSXRB Figure 16 Number...
  • Page 28 2 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.1.9 PCB: Light Commercial (for Cassette & Ducted IDU) 36K BMS500-AAS030-1CSXRB, BMS500-AAS036-1CSXRB Figure 17 Data subject to change 04.2020 | Bosch Thermotechnology Corp.
  • Page 29 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 29 7.1.10 IPM: Light Commercial (for Cassette & Ducted IDU) 36K BMS500-AAS030-1CSXRB, BMS500-AAS036-1CSXRB Figure 18 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 30 3 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.1.11 PCB: Light Commercial 48K & 60K BMS500-AAS048-1CSXLB, BMS500-AAS060-1CSXLB Figure 19 Data subject to change 04.2020 | Bosch Thermotechnology Corp.
  • Page 31 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 31 7.1.12 IPM: Light Commercial 48K & 60K BMS500-AAS048-1CSXLB, BMS500-AAS060-1CSXLB Figure 20 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 32 3 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual After power on, LED3 (Green color) and LED2 (Red color) will be ashing if the unit has some problems. Problems LED3 (Green) LED2 (Red)

  • Page 33: Indoor Wiring Diagram

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 33 7.2 Indoor Wiring Diagram 7.2.1 Indoor Wiring Diagram_Wall Mounted Unit Figure 21 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 34 3 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.2.2 Indoor Wiring Diagram_4-Way Cassette Unit 9K, 12K, 18K & 24K models Figure 22 36K & 48K models Figure 23 Data subject to change...
  • Page 35 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 35 7.2.3 Indoor Wiring Diagram_4-Ducted Unit 9K, 12K, 18K & 24K models FAN FOR THE Alarm Remote FRESH AIR Output Control NOTE: Remove the short connector of J7 when you use the "on-off"...

  • Page 36: Outdoor Wiring Diagram

    3 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.4 Outdoor Wiring Diagram 7.4.1 Regular Single Zone (9K & 12K) Figure 26 Data subject to change 04.2020 | Bosch Thermotechnology Corp.
  • Page 37 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 37 7.4.2 Regular Single Zone (18K & 24K) & Hyper Heat Single Zone (9K, 12K & 18K) Figure 27 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 38 3 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.4.3 Hyper Heat Single Zone (24K) Light Commercial Single Zone (30K & 36K for Wall Mounted IDU) Figure 28 Data subject to change...
  • Page 39 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 39 7.4.4 Light Commercial Single Zone (36K for Cassette and Ducted IDU) Figure 29 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 40 4 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 7.4.5 Light Commercial Single Zone (48K & 60K) Figure 30 Data subject to change 04.2020 | Bosch Thermotechnology Corp.

  • Page 41: Diagnosis & Solution

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 41 8 Diagnosis & Solution 8.1 EEPROM parameter error (E0/F4) Error Code E0 (indoor) / F4 (outdoor) Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.

  • Page 42: Indoor / Outdoor Unit's Communication (E1)

    4 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.2 Indoor / outdoor unit’s communication (E1) Applicable models: Wall Mounted IDU System: 9K ~ 36K Cassette IDU System: 9K ~ 24K Ducted IDU System: 9K ~ 24K...
  • Page 43 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 43 Remark: Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of Use a multimeter to test the resistance of the reactor which does not outdoor unit.
  • Page 44 4 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Applicable models: Cassette IDU System: 36K ~ 48K Ducted IDU System: 36K ~ 60K Error Code Indoor unit does not receive the feedback from outdoor unit for 60 seconds or outdoor unit does not Malfunction decision conditions receive feedback from indoor unit for 120 seconds.

  • Page 45: Zero Crossing Detection Error (E2)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 45 8.3 Zero crossing detection error (E2) Error Code When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time Malfunction decision conditions interval is abnormal.

  • Page 46: Fan Speed Has Been Out Of Control (E3 / F5)

    4 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.4 Fan speed has been out of control (E3 / F5) Error Code E3 (indoor) / F5 (outdoor) When indoor / outdoor fan speed is too low or too high for certain time, the unit will stop and the LED Malfunction decision conditions will display the failure.
  • Page 47 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 47 Index 1: Indoor or Outdoor DC Fan Motor (control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector.

  • Page 48: Open Circuit Or Short Circuit Of Temperature Sensor (E4 / E5 / F1 / F2 / F3 / P7)

    4 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.5 Open circuit or short circuit of temperature sensor (E4 / E5 / F1 / F2 / F3 / P7) Error Code E4/E5/F1/F2/F3 Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.

  • Page 49: Refrigerant Leakage Detection (Ec)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 49 8.6 Refrigerant Leakage Detection (EC) Error Code De ne the initial evaporator coil temperature T2 when the compressor just starts running as Tcool. In the rst 5 minutes after the compressor starts up in cooling mode, if T2<Tcool -1.8ºF (1ºC) does not Malfunction decision conditions keep continuous 4 seconds and this situation happens 3 times, the display area will show "EC"...

  • Page 50: Water-Level Alarm Malfunction (Ee)

    5 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.7 Water-level Alarm Malfunction (EE) Error Code Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure code.

  • Page 51: Overload Current Protection (F0)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 51 8.8 Overload current protection (F0) Error Code Malfunction decision conditions An abnormal current rise is detected by checking the speci ed current detection circuit.

  • Page 52: Ipm Malfunction Or Igbt Over-Strong Current Protection (P0)

    5 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.9 IPM malfunction or IGBT over-strong current protection (P0) Error Code When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show Malfunction decision conditions “P0”...
  • Page 53 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 53 Figure 48 Figure 49 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 54 5 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Figure 50 Figure 51 Data subject to change 04.2020 | Bosch Thermotechnology Corp.

  • Page 55: Over Voltage Or Too Low Voltage Protection (P1)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 55 8.10 Over voltage or too low voltage protection (P1) Error Code Malfunction decision conditions An abnormal voltage rise or drop is detected by checking the speci ed voltage detection circuit.

  • Page 56: High Temperature Protection Of Ipm Module Or Compressor Top (P2)

    5 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.11 High temperature protection of IPM module or compressor top (P2) Error Code Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure.

  • Page 57: Inverter Compressor Drive Error (P4)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 57 8.12 Inverter compressor drive error (P4) Error Code An abnormal inverter compressor drive is detected by a special detection circuit, including Malfunction decision conditions...

  • Page 58: Low Pressure Protection (P6)

    5 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.13 Low pressure protection (P6) Error Code When the pressure of the system reaches a certain value, the low pressure protector will switch off.

  • Page 59: High Temperature Protection Of Indoor Coil In Heating Mode (J0)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 59 8.14 High temperature protection of indoor coil in heating mode (J0) Error Code When evaporator coil temperature is more than 140°F (60°C), the unit stops. It starts again only when Malfunction decision conditions the evaporator coil temperature is less than 129°F (54°C).

  • Page 60: High Temperature Sensed At Outdoor Coil (J1)

    6 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.15 High temperature sensed at outdoor coil (J1) Error Code When the outdoor pipe temperature is more than 149°F (65°C), the unit stops. It starts again only when Malfunction decision conditions the outdoor pipe temperature is less than 126°F (52°C).

  • Page 61: High Temperature Sensed At Compressor Discharge Line (J2)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 61 8.16 High temperature sensed at compressor discharge line (J2) Error Code When the compressor discharge temperature (T5) is more than 239°F (115°C) for 10 seconds, the Malfunction decision conditions compressor will stop and not restart until T5 is less than 194°F (90°C).

  • Page 62: Pfc Module Protection (J3)

    6 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.17 PFC module protection (J3) Error Code IPM sends abnormal voltage signal to compressor driver chip, the display will show error code "J3" and Malfunction decision conditions system will stop operation.

  • Page 63: Communication Error Between Outdoor Unit Main Pcb And Ipm Control (J4)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 63 8.18 Communication error between outdoor unit main PCB and IPM control (J4) Error Code Malfunction decision conditions Communication error between outdoor PCB chip and compressor driven chip...

  • Page 64: High Pressure Switch Open (J5)

    6 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.19 High pressure switch open (J5) Error Code Malfunction decision conditions If the sampling voltage is not 5V, the LED displays a failure code.

  • Page 65: Low Pressure Switch Open (P6/J6)

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 65 8.20 Low pressure switch open (P6/J6) Error Code J6/P6 Malfunction decision conditions If the sampling voltage is not 5V, the LED displays a failure code.

  • Page 66: Ac Voltage Protection (J8)

    6 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 8.21 AC Voltage protection (J8) Error Code Malfunction decision conditions An abnormal voltage rise or drop is detected by checking the speci ed voltage detection circuit.

  • Page 67: Main Parts Check

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 67 8.22 Main Parts Check Temperature sensor check WARNING: ELECTRICAL HAZARD Be sure to turn off all power supplies or disconnect all wires to avoid electric shock.
  • Page 68 6 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Appendix 1 Resistance to Temperature value table for resistive sensors: T1,T2,T3,T4 (°C/K Ohm) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C...
  • Page 69 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 69 Appendix 2 Resistance to Temperature value table for resistive sensors: T5 (°C/K Ohm) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C...
  • Page 70 7 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Compressor check Measure the resistance value of each winding by using the tester. Figure 66 Figure 67 Resistance Value 36K Light Position 30K Light...
  • Page 71 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 71 IPM continuity check WARNING: ELECTRICAL HAZARD Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before trouble shooting.
  • Page 72 7 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Suction pressure at the service port Cooling chart: °F (°C) IDT / ODT 75 (23.89) 85 (29.44) 95 (35) 105 (40.56) 115 (46.11) 70/59 10.1...

  • Page 73: Disassembly Guide

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 73 9 Disassembly Guide 9.1.2 Removing the fan assembly Remove the panel plate. Remove the nut af xing the fan, and remove the fan. This part is for reference, the photos may have slight differences with your machine.
  • Page 74 7 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Disconnect the connector for fan motor from the electronic control board. 9.1.3 Removing the electrical parts After removing the panel plate and fan assembly, remove the connector for the compressor.
  • Page 75 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 75 Disconnect the electronic expansion valve wire (Fig. 85, pos. 4) from the 9.1.4 Removing the reversing valve control board First remove the panel plates and electrical parts.

  • Page 76: Models: 12K Regular: Bms500-Aas012-1Csxra

    7 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 9.2 Models: 12K Regular: BMS500-AAS012-1CSXRA 9.2.2 Removing the fan assembly 9K & 12K Hyper Heat: BMS500-AAS009-1CSXHB, Remove the panel plate. BMS500-AAS012-1CSXHB Remove the hex nut af xing the fan, and then remove the fan.
  • Page 77 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 77 Disconnect the connector for fan motor from the electronic control board. 9.2.3 Removing the electrical parts After removing the panel plate and fan assembly, remove the connectors for the compressor.
  • Page 78 7 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Disconnect the electronic expansion valve wire. 9.2.4 Removing the reversing valve First remove the panel plates and electrical parts. Recover refrigerant from the refrigerant circuit.

  • Page 79: Models: 18K Regular: Bms500-Aas018-1Csxra

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 79 9.3 Models: 18K Regular: BMS500-AAS018-1CSXRA 9.3.2 Removing the fan assembly 9.3.1 Removing the panel plate Remove the panel plate. Remove the hex nut xing the fan, and then remove the fan.
  • Page 80 8 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Disconnect the connector for fan motor from the electronic control board. 9.3.3 Removing the electrical parts After removing the panel plate and fan assembly, remove the connectors for the compressor and reactor.
  • Page 81 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 81 Disconnect the electronic expansion valve wire. 9.3.4 Removing the reversing valve First remove the panel plates and electrical parts. Recover refrigerant from the refrigerant circuit.

  • Page 82: Models: 18K Hyper Heat: Bms500-Aas018-1Csxhb

    8 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 9.4 Models: 18K Hyper Heat: BMS500-AAS018-1CSXHB Remove front panel (7 screws). 9.4.1 Removing the panel plate Stop operation of the system and turn “OFF” the power breaker.

  • Page 83: Models: 9K, 12K & 18K Hyper Heat

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 83 9.5 Models: 9K, 12K & 18K Hyper Heat: BMS500-AAS009-1CSXHB, Remove the rear net (2 screw). BMS500-AAS012-1CSXHB, BMS500-AAS018-1CSXHB 9.5.1 Removing the electrical parts After removing the panel plate, open the control box cover (4 hooks).

  • Page 84: Bms500-Aas018-1Csxhb

    8 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 9.6 Models: 24K Regular: BMS500-AAS024-1CSXRA 9.6.2 Removing the fan assembly 24K Hyper Heat: BMS500-AAS024-1CSXHB Remove the panel plates. 30K & 36K Light Commercial for Wall Mounted IDU: BMS500-AAS030-1CSXRB, BMS500-AAS036-1CSXRB Remove the hex nut xing the fan, and then remove the fan.
  • Page 85 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 85 9.6.3 Removing the electrical parts Compressor After removing the panel plate and fan assembly, remove the connector for T3,T4,T5,sensor Pressure switch the compressor. wire Figure 124 Pull out the two blue wires connected with the reversing valve.
  • Page 86 8 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Disconnect the pressure switch connector. 9.6.4 Removing the reversing valve First remove the panel plates and electrical parts. Recover refrigerant from the refrigerant circuit.

  • Page 87: Models: 48K & 60K Light Commercial: Bms500-Aas048-1Csxlb, Bms500-Aas060-1Csxlb

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 87 9.7 Models: 48K & 60K Light Commercial: BMS500-AAS048-1CSXLB, Remove 4 screws to disassemble top cover. BMS500-AAS060-1CSXLB 9.7.1 Removing the fan assembly Stop operation of the system and turn “OFF” the power breaker.
  • Page 88 8 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Remove 4 screws and disassemble fan motor. Remove 2 screws from the terminal board and 15 screws from the right rear panel. 2 screws...
  • Page 89 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 89 9.7.3 Removing the electrical parts Disconnect the pressure switch connector. After removing the panel plate and fan assembly, remove the connector for the compressor.

  • Page 90: All Models

    9 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual 9.8 All Models 9.8.1 Removing the sound blanket Remove the panel plates. Remove the sound blanket. Sound Blanket(top) Sound Blanket(side) Figure 145 9.8.2 Removing the reversing valve Figure 146 First, remove panel plate and connection of 4-Way valve on PCB.
  • Page 91 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 91 9.8.3 Removing the compressor First, the remove the panel plate, connection of compressor on PCB. Remove refrigerant from the the system. Remove the ange nut and terminal cover.
  • Page 92 9 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Remove the hex nuts and washer xing the compressor on the bottom plate. Suction Pipe Discharge Pipe Figure 149 Heat up the brazed parts and then remove the discharge and suction pipes.
  • Page 93 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 93 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 94 9 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual Data subject to change 04.2020 | Bosch Thermotechnology Corp.
  • Page 95 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 95 Bosch Thermotechnology Corp. | 04.2020 Data subject to change...
  • Page 96 United States and Canada Bosch Thermotechnology Corp. 65 Grove Street Watertown, MA 02472 Tel: 866-642-3198 Fax: 603-965-7581 www.boschheatingandcooling.com BTC 769002302 A / 04.2020...

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