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

Ductless air conditioner / heat pump multi zone outdoor units
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  • Page 1 Bosch Ductless Air Conditioner / Heat Pump Climate 5000 Series Multi Zone Outdoor Units Service Manual...
  • Page 2 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Data subject to change 08.2020 | Bosch Thermotechnology Corp.

  • Page 3: Table Of Contents

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 3 Table of Contents 1 Key to Symbols and Safety Instructions 9 Disassembly Guide 1.1 Key to Symbols 9.1 Outdoor Unit - BMS500-AAM018-1CSXRA 1.2 Safety...

  • Page 4: Key To Symbols And Safety Instructions

    4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units 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 Multi Zone Outdoor Units | 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 Multi Zone Outdoor Units Service Manual 2 Part Names and Model Numbers 2.1 Outdoor Models Voltage Capacity Max Zone Regular Outdoor Units Hyper Heat Outdoor Units BMS500-AAM018-1CSXRA BMS500-AAM018-1CSXHB...

  • Page 7: Dimensions

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 7 3 Dimensions 3.1 Outdoor Unit Split type outdoor unit mounting dimensions Split Type Outdoor Unit Figure 1 Mounting Dimensions Outdoor Unit Dimensions mm (in.) mm (in.)

  • Page 8: Refrigerant Cycle Diagrams - Outdoor Models

    8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 4 Refrigerant Cycle Diagrams - Outdoor Models 4.1 For Model: 18K Multi Zone Regular System BMS500-AAM018-1CSXRA INDOOR OUTDOOR EXV A CAPILLARY A...

  • Page 9: For Models: 27K Multi Zone Regular, 27K Multi Zone Hyper Heat System Bms500-Aam027-1Csxra, Bms500-Aam027-1Csxhb

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 9 4.3 For Models: 27K Multi Zone Regular, 27K Multi Zone Hyper Heat System BMS500-AAM027-1CSXRA, BMS500-AAM027-1CSXHB INDOOR OUTDOOR EXV A CAPILLARY A LIQUID VALVE A...

  • Page 10: For Model: 48K Multi Zone Regular System Bms500-Aam048-1Csxra

    1 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 4.5 For Model: 48K Multi Zone Regular System BMS500-AAM048-1CSXRA INDOOR OUTDOOR EXV A CAPILLARY A LIQUID VALVE A EXV B CAPILLARY B...

  • Page 11: Installation Details

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 11 6 Installation Details 6.4 First Time Installation 6.1 Torque Requirements 6.4.1 Air Purging with Vacuum Pump Outer Diameter of Tube Tightening Torque Max.

  • Page 12: Adding The Refrigerant To An Existing System

    1 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 6.5 Adding the Refrigerant to an Existing System Refrigerant charging (Liquid Side) (Liquid Side) (Outdoor Unit) (Indoor Unit) (Outdoor Unit) (Indoor Unit)
  • Page 13 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 13 For models: BMS500-AAM027-1CSXRA, BMS500-AAM036-1CSXRA, BMS500-AAM048-1CSXRA, BMS500-AAM018-1CSXHB, BMS500-AAM027- 1CSXHB, BMS500-AAM036-1CSXHB For above models, there is a set of master valve, which will allow installer to vacuum and recycle the refrigerant at a faster speed.

  • Page 14: Operation Characteristics

    1 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 6.7 Operation Characteristics COOL operation HEAT operation DRY operation 63ºF - 90ºF 32ºF - 86ºF 50ºF - 90ºF Room Temperature 17ºC - 32ºC 0ºC - 30ºC...

  • Page 15: Electronic Functions

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 15 7 Electronic Functions 7.2.6 Compressor current limit protection The temperature interval for the current limit is the same as the range of the T4 7.1 Abbreviation...

  • Page 16: Operation Modes And Functions

    1 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 7.4 Operation Modes and Functions 7.2.7 Indoor / outdoor units communication protection If the indoor units do not receive the feedback signal from the outdoor units for 2 7.4.1 Capacity Request Calculation...
  • Page 17 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 17 The maximum running frequency is adjusted according to the outdoor ambient Then modify it according to a T2 average (correction): temperature. T4FREMAXC0...
  • Page 18 1 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 7.4.2 Defrost Control 7.4.3 Outdoor Fan Control Conditions for Defrost Mode: 7.4.3.1 Cooling Mode After the compressor starts and enters normal operation, mark the minimum value Under normal operating conditions, the system chooses the running fan speed of T3 from the 10th to 15th minute as T30.
  • Page 19 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 19 7.4.4.1 Cooling Mode The initial open angle of the EXV depends on the size of the indoor model. The adjustment range is 100 pulse - 400 pulse.
  • Page 20 2 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 7.4.6 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 21 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 21 When the AC enter into information enquiry status, it will display code value for the next 25s, the details are as follows:...

  • Page 22: Troubleshooting

    2 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8 Troubleshooting Safety WARNING: ELECTRICAL HAZARD Electricity power is still kept in capacitors even though power supply is shut off. Do not forget to discharge the electricity in capacitor.

  • Page 23: Multi Zone Outdoor Unit Error Codes

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 23 8.1 Multi Zone Outdoor Unit Error Codes NOTICE If below error codes appear, please turn off the system and contact an Authorized Service Provider.

  • Page 24: Quick Check By Error Codes

    2 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.2 Quick Check by Error Codes Cause IDU PCB ODU PCB Display Board IDU Fan Motor ODU Fan Motor T1 Sensor...

  • Page 25: Odu Pcb & Ipm

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 25 8.3 ODU PCB & IPM 8.3.1 PCB: Multi Zone Regular 18K, 27K & Hyper Heat 18K BMS500-AAM018-1CSXRA, BMS500-AAM027-1CSXRA, BMS500-AAM018-1CSXHB Figure 25 Bosch Thermotechnology Corp. | 08.2020...
  • Page 26 2 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.3.2 IPM: Multi Zone Regular 18K, 27K & Hyper Heat 18K BMS500-AAM018-1CSXRA, BMS500-AAM027-1CSXRA, BMS500-AAM018-1CSXHB Figure 26 Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 27 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 27 8.3.3 PCB: Multi Zone Regular 36K & Hyper Heat 27K BMS500-AAM036-1CSXRA, BMS500-AAM027-1CSXHB Figure 27 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 28 2 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.3.4 IPM: Multi Zone Regular 36K & Hyper Heat 27K BMS500-AAM036-1CSXRA, BMS500-AAM027-1CSXH Figure 28 Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 29 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 29 8.3.5 PCB: Multi Zone Regular 48K & Hyper Heat 36K BMS500-AAM048-1CSXRA, BMS500-AAM036-1CSXHB Figure 29 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 30 3 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.3.6 IPM: Multi Zone Regular 48K & Hyper Heat 36K BMS500-AAM048-1CSXRA, BMS500-AAM036-1CSXHB Figure 30 Data subject to change 08.2020 | Bosch Thermotechnology Corp.

  • Page 31: Outdoor Unit Display

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 31 8.4 Outdoor Unit Display 8.4.1 Outdoor Unit Point Check Function A check switch is included on the outdoor PCB. Push SW1 to check the unit's status while running.
  • Page 32 3 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Number of Presses Display Remark Indoor unit A room temperature (T Indoor unit B room temperature (T If the temperature is lower than 0 °C, the digital display shows “0.”...

  • Page 33: Outdoor Wiring Diagram

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 33 8.5 Outdoor Wiring Diagram 8.5.1 Regular Multi Zone (18K) Figure 32 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 34 3 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.5.2 Regular Multi Zone (27K) Figure 33 Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 35 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 35 8.5.3 Regular Multi Zone (36K) Figure 34 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 36 3 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.5.4 Regular Multi Zone (48K) Figure 35 Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 37 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 37 8.5.5 Hyper Heat Multi Zone (18K) Figure 36 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 38 3 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.5.6 Hyper Heat Multi Zone (27K) Figure 37 Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 39 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 39 8.5.7 Hyper Heat Multi Zone (36K) Figure 38 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...

  • Page 40: Diagnosis And Solution

    4 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6 Diagnosis and Solution 8.6.1 EEPROM parameter error (E0) Error Code Malfunction decision conditions Outdoor PCB main chip does not receive feedback from EEPROM chip.
  • Page 41 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 41 8.6.2 Indoor / outdoor communication error (E2) Error Code Indoor unit does not receive the feedback from outdoor unit for 120 seconds or outdoor unit does not Malfunction decision conditions receive the feedback from any one indoor unit for 180 seconds.
  • Page 42 4 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Note: IPM board - Regular: 36K & 48K Models / HyperHeat: 27K & 36K Models: Use a multimeter to test the DC voltage between 2 (old: L2) port and 3 port of outdoor unit.
  • Page 43 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 43 8.6.3 IPM / outdoor PCB communication error (E3) Error Code Malfunction decision conditions PCB main chip does not receive feedback from IPM module for 60 seconds.
  • Page 44 4 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Note: Use a multimeter to test the DC voltage between black pin and red pin of signal wire. The normal value should be around 12V.
  • Page 45 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 45 8.6.4 Open circuit or short circuit of temperature sensor (E4 (outdoor) / F1 / F2 / F3 / F4/ F5 (indoor)) Error Code...
  • Page 46 4 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.5 High / Low voltage protection (E5) Error Code Malfunction decision conditions An abnormal voltage rise or drop is detected by built-in logic in PCB...
  • Page 47 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 47 IPM Board (for 18K & 27K models) Figure 52 Bridge rectifier (for 18K & 27K models) Remark: Measure the DC voltage between + and - port. The normal value should be between 190V~250V.
  • Page 48 4 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual IPM board (for 36K model) Figure 54 Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 49 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 49 B ridge rectifier (for 48K model) Remark: Measure the DC voltage between + and - port. The normal value should be 190V~250V.
  • Page 50 5 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.6 PFC module protection error (E6) Error Code When the voltage signal that PFC sends to main control board is abnormal, the display LED will show Malfunction decision conditions "E6"...
  • Page 51 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 51 Inductance Figure 57 Two ports of the inductance Figure 58 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 52 5 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.7 Outdoor fan speed malfunction (E8) Error Code When outdoor fan speed is kept too low (300RPM) or too high (2400RPM) for certain amount of time, Malfunction decision conditions the unit will stop and the LED will display the failure.
  • Page 53 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 53 DC fan motor(control chip is inside fan motor) DC motor voltage input and output Power on and when the unit is in standby, measure the voltage of pin1-pin3,...
  • Page 54 5 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.8 High pressure protection (P1) Error Code Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure.
  • Page 55 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 55 Figure 63 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 56 5 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.9 High pressure protection (P2) Error Code Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure.
  • Page 57 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 57 Figure 65 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 58 5 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.10 Current overload protection (P3) Error Code Malfunction decision conditions If the outdoor current exceeds the current limit value, the LED will display the failure.
  • Page 59 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 59 Figure 67 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 60 6 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.11 Temperature protection of compressor discharge (P4) Error Code When the compressor discharge temperature(T5) is more than 115°C for 10 seconds, the compressor Malfunction decision conditions will stop and restart when T5 is less than 90°C.
  • Page 61 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 61 8.6.12 High temperature protection (condenser) (P5) Error Code When the outdoor pipe temperature is more than 65°C, the system will stop. The system will operate Malfunction decision conditions again when outdoor pipe temperature is less than 52°C.
  • Page 62 6 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.13 IPM malfunction (P6) Error Code When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show Malfunction decision conditions "P6"...
  • Page 63 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 63 8.6.14 High temperature protection (compressor) (P0) Error Code Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure.
  • Page 64 6 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8.6.15 Main Parts Check 1. Temperature sensor check WARNING: ELECTRICAL HAZARD Be sure to turn off all power supplies or disconnect all wires to avoid electric shock.
  • Page 65 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 65 Appendix 1 Resistance to Temperature value table for resistive sensors: T1,T2,T3,T4 (°C/°F/K Ohm) °C °F K Ohm °C °F K Ohm °C °F...
  • Page 66 6 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Appendix 2 Resistance to Discharge Temperature value table: T5 (°C/°F/K Ohm) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C...
  • Page 67 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 67 2. Compressor check Measure the resistance value of each winding by using the tester. Figure 73 Figure 74 Resistance Value per Compressor Model...
  • Page 68 6 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 3. 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 69 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 69 4. Four - Way Valve Step 1. Power on, use a digital tester to measure the voltage. When the unit operates in cooling mode, value should be 0V. When the unit operates in heating mode, the value should be about 230VAC.
  • Page 70 7 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 5. EXV check Step 1. Disconnect EXV connectors from PCB Figure 78 Step 2. Check the resistance value on EXV coil...

  • Page 71: Disassembly Guide

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 71 9 Disassembly Guide 5. Remove the top cover (3 screws). Screws Pictures are provided as a reference only. Each unit will be different depending on the your model number.
  • Page 72 7 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 8. Remove the four xing screws of the fan motor, then remove the fan motor. 3. Remove the big handle (4 screws).
  • Page 73 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 73 9.1.3 Removing the electrical parts 1. Follow steps outlined in Section 9.1.1. 2. Remove screws on IPM board (4 screws). IPM board...
  • Page 74 7 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 5. Remove the IPM board. 7. Disconnect the grounding wire (yellow-green) after removing the big handle and the right-rear panel. Figure 93 6.
  • Page 75 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 75 9.1.4 Removing the compressor 9.1.5 Removing the reactor 1. Follow steps outlined in Section 9.1.2. 1. Follow steps outlined in Section 9.1.2.

  • Page 76: Outdoor Unit - Bms500-Aam027-1Csxra, Bms500-Aam018-1Csxhb, Bms500-Aam027-1Csxhb

    7 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 9.2 Outdoor Unit - BMS500-AAM027-1CSXRA, 9.1.6 Removing the 4-way valve BMS500-AAM018-1CSXHB, BMS500-AAM027-1CSXHB 1. Follow steps outlined in Section 9.1.2. 9.2.1 Removing the panel plate 2.
  • Page 77 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 77 4. Remove the right side panel (1 screw). Screws of front panel Screw Screws of front panel Figure 105 Figure 107 5. Remove the front panel (8 screws).
  • Page 78 7 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 7. Remove the terminal board (2 screws). 4. Disconnect the fan motor connector CN14 from the IPM board. Screws of terminal board...
  • Page 79 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 79 9.2.3 Removing the electrical parts 5. Disconnect wires between IPM board and PCB as shown below. 1. Follow steps outlined in Section 9.2.1.
  • Page 80 8 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 7. Disconnect the connectors and wires connected the PCB from other parts. 8. Disconnect the grounding wire (yellow-green). Connectors: CN17: T3/T4 Temperature sensor (2p/2p,white)
  • Page 81 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 81 9.2.4 Removing the compressor 9.2.5 Removing the reactor 1. Follow steps outlined in Section 9.2.1. 1. Follow steps outlined in Section 9.2.1.
  • Page 82 8 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 9.2.6 Removing the 4-way valve 9.2.7 Removing the expansion valve 1. Follow steps outlined in Section 9.2.1. 1. Follow steps outlined in Section 9.2.1 and evacuate the refrigerant from the unit.

  • Page 83: Outdoor Unit - Bms500-Aam036-1Csxra

    Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 83 9.3 Outdoor Unit - BMS500-AAM036-1CSXRA 4. Remove the front right panel (1 screw). 9.3.1 Removing the panel plate 1. Stop operation of the system and turn “OFF” the power at the disconnect.
  • Page 84 8 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Screws of front panel Screws of right-rear panel Screws of front panel Figure 132 6. Remove terminal board and water collector cover.
  • Page 85 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 85 9.3.2 Removing the fan assembly 5. Remove the four xing screws of the fan motor, then remove the motor. 1. Follow steps outlined in Section 9.3.1.
  • Page 86 8 6 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 4. Remove screw to take out the driver board. 5. Disconnect the connectors and wires connected from PCB and other parts.
  • Page 87 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 87 9.3.4 Removing the compressor 9.3.5 Removing the 4-way valve 1. Follow steps outlined in Section 9.3.1. 1. Follow steps outlined in Section 9.3.1.

  • Page 88: Outdoor Unit - Bms500-Aam048-1Csxra, Bms500-Aam036-1Csxhb

    8 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 9.4 Outdoor Unit - BMS500-AAM048-1CSXRA, BMS500-AAM036-1CSXHB Screws of top cover 9.4.1 Removing the fan assembly 1. Stop operation of the system and turn “OFF” the power at the disconnect.
  • Page 89 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 89 7. Remove the four xing screws of the fan motor. Then remove the fan motor. 9.4.2 Removing the panel plate 1. Stop operation of the air conditioner and turn “OFF” the power breaker.
  • Page 90 9 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 9.4.3 Removing the electrical parts 3. Disconnect following connection wires and connectors from the IPM board. CN1, CN2, CN3, CN6, CN9 and U, V, W 1.
  • Page 91 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 91 7. Remove PCB. CN13 CN16 CN21 CN29 CN37 CN8 CN12 CN9 CN11 Figure 160 CN10 CN30/CN23/CN33/CN26/CN15 CN17/CN18 CN19/CN20 CN24/CN25 Figure 158 6. Disconnect the ground wire (yellow-green) after removing the big handle.
  • Page 92 9 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual 9.4.4 Removing the compressor 9.4.5 Removing the 4-way valve 1. Follow steps outlined in Section 9.4.2. 1. Follow steps outlined in Section 9.4.2.
  • Page 93 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 93 Bosch Thermotechnology Corp. | 08.2020 Data subject to change...
  • Page 94 9 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units Service Manual Data subject to change 08.2020 | Bosch Thermotechnology Corp.
  • Page 95 Service Manual Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 95 Bosch Thermotechnology Corp. | 08.2020 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 769002303 A / 08.2020...

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Bms500-aam018-1csxraBms500-aam018-1csxhbBms500-aam027-1csxraBms500-aam027-1csxhbBms500-aam036-1csxraBms500-aam036-1csxhb ... Show all

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