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

Wall mounted ductless split air conditioner/ heat pump
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Service Manual
Wall Mounted Ductless Split Air Conditioner/
Heat Pump
Climate 5000 Series
WARNING:
 Installation must be performed by a licensed
contractor, and per the instructions in the
installation manual. Improper installation can
cause water leakage, electrical shock, or fire.
 In North America, installation must
be performed in accordance with the
requirement of NEC (National Electric Code)
and CEC (Canadian Electric Code) by licensed
and qualified personnel only.
 Only contact a licensed contractor for repair
or maintenance of this unit.

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Summary of Contents for Bosch Climate 5000 Series

  • Page 1 Service Manual Wall Mounted Ductless Split Air Conditioner/ Heat Pump Climate 5000 Series WARNING:  Installation must be performed by a licensed contractor, and per the instructions in the installation manual. Improper installation can cause water leakage, electrical shock, or fire.
  • Page 2 Service Manual Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 3: Table Of Contents

    7.6 Wall Mounted Unit (IDU & ODU) Error Code Diagnosis and Solution 8 Disassembly Guide 8.1 Indoor Unit - Wall Mounted Unit 8.2 Outdoor Unit Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 4: Key To Symbols And Safety Instructions

    Lead components, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings.ca.gov. Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 5  Install condensate drainage piping according to the instructions in this manual. Improper condensate drainage may cause water damage to your home and property. Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 6: Part Names And Model Numbers

    BMS500-AAS012-0CSXRC BMS500-AAU006-1AHWXC BMS500-AAS009-1CSXRC BMS500-AAU009-1AHWXC BMS500-AAS009-1CSXRC BMS500-AAS009-1CSXHC BMS500-AAU012-1AHWXC BMS500-AAS012-1CSXRC BMS500-AAS012-1CSXHC 208-230V Wall Mounted BMS500-AAU018-1AHWXC BMS500-AAS018-1CSXRC BMS500-AAS018-1CSXHC BMS500-AAU024-1AHWXC BMS500-AAS024-1CSXRC BMS500-AAS024-1CSXHC BMS500-AAS030-1AHWXC BMS500-AAS030-1CSXRC BMS500-AAS036-1AHWXC BMS500-AAS036-1CSXRC Table 1 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 7: Dimensions & Clearances

    46.9 x 11 x 14.6 1191 x 279 x 371 BMS500-AAS030-1AHWXC 50.4 x 17.9 x 14.2 1280 x 455 x 361 BMS500-AAS036-1AHWXC Table 2 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 8 3.1.1 Mounting Plates 6K, 9K & 12K Btuh Models Figure 2 18K Btuh Model Figure 3 24K, 30K & 36K Btuh Models Figure 4 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 9: Outdoor Unit

    More than 30cm (11.8in) More than 60cm (23.6in) (Service space) More than 30cm (11.8in) More than 60cm (23.6in) More than 200cm (79in) Figure 6 Outdoor Unit Clearances Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 10: Refrigerant Cycle Diagrams

    4.2 Regular and Max Performance 18K Systems Figure 8   F or Max Performance 9K, 12K, 18K System, there is no Accumulator. 1 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 11: Regular 24K, 30K Systems, Max Performance 24K System

    Service Manual 4.3 Regular 24K, 30K Systems, Max Performance 24K System Figure 9 4.4 Regular 36K System Figure 10 | 11 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 12: Light Commercial 36K, 48K, 60K Systems

    High pressure switch 3-WAY VALVE Accumulator TP Discharge temp. sensor Compressor Low pressure Oil separator switch COOLING HEATING Oil return Capillary Figure 11 1 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 13: Installation Details

    3/8" / Φ9.52 1/4" / Φ6.35 1/2" / Φ12.7 3/8" / Φ9.52 5/8" / Φ15.9 3/8" / Φ9.52 3/4" / Φ19 Table 6 | 13 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 14: First Time Installation

    If bubbles come out, the pipes are leaking. 1 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 15: Re-Installation / Indoor Unit Needs To Be Repaired

    3-way valves. 8. Use a torque wrench to tighten the caps to a torque of 18 N.m. 9. Check for gas leakage. | 15 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 16: Operation Characteristics

    (vertically to the floor), and set HIGH fan mode.  The optimum performance will be achieved during this operating temperature zone. 1 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 17: Electronic Functions

    5. Auto fan: In fan-only mode, AC operates the same as auto fan in cooling mode with the temperature set at 24°C.(Tsc =24°C) | 17 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 18 The outdoor unit will run at diff erent fan speeds according to T4 and compressor running frequency. For diff erent outdoor units, the fan speeds are diff erent. 1 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 19  Decrease: Decrease the running frequency to the lower level per 1 minute.  Hold: Keep the current frequency.  Resume: No limitation for frequency. Figure 19 Legend: TEH0=25C, TEH1=32C, TEH2=33C, | 19 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 20 If T3 is lower than 3°C and compressor running time is more than 120 minutes, at this time, if T3 is lower than TCDI1+4°C(39.2°F) for 3 minutes, the unit enters defrosting mode. 2 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 21 Quit this mode and turn off the unit when: either quit normal defrosting, turn off by RC or Press AUTO/COOL button continuously for 5s again. | 21 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 22 If the unit was already off before the power failure, the unit stands by. 6.4.12 Refrigerant leakage detection The indoor unit will automatically display "EL0C" when it detects refrigerant leakage. 2 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 23 The unit off ers a better temperature and humidity control solution in the dry mode, the room temperature can be maintained accurately as set temperature while the moisture is being removed. | 23 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 24 1. In engineer mode, press the key combination of “On/Off + Air speed” for 2s; 2. The engineer mode will be exited if there are no valid key operations for continuous 60s. 2 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 25 Causes of compressor stop 0-99 Decimal display consult with manufacturer Reserve 0-FF Table 12 0 - FF is a hexidecimal display value. Not OFF. | 25 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 26: Troubleshooting

    PCB. A screwdriver will also work as a resistive element. For reference the most common error codes are E1, P0, and P3. 2 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 27: Error Codes - Wall Mounted Indoor Unit

    If you see an error code not displayed in Table 14, contact the manufacturer as the error displayed is for development purpose only. | 27 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 28: Quick Check By Error Code

    For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control box should be replaced as a whole. 2 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 29: Odu Pcb & Ipm

    CN29 0V AC (standby) CN30 10-230V AC (running) COMP_IPM IPM1 IPM for compressor Bridge CN4_2 connect to transformer CN4_3 Table 15 | 29 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 30 IPM for DC fan CN28 connect to compressor CN29 0V AC (standby) CN30 10-200V AC (running) COMP_IPM IPM 301 IPM for compressor Table 16 3 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 31 EEPROM programmer port CN28 connect to compressor CN29 0V AC (standby) CN30 10-200V AC (running) COMP_IPM IPM 301 IPM for compressor Table 17 | 31 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 32 IPM for compressor CN27 connect to compressor CN28 0V AC (standby) CN29 10-200V AC (running) EE_PORT CN505 EEPROM programmer port Table 18 3 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 33 7.3.5 PCB: Max Performance Single Zone 24K BMS500-AAS024-1CSXHC 7.3.6 PCB: Regular Single Zone (for Wall Mounted IDU) 30K & 36K BMS500-AAS030-1CSXRC, BMS500-AAS036-1CSXRC Figure 27 | 33 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 34 CN36 4-WAY CN38 connect to 4 way valve, 208-230V AC when is ON. CN27 connect to key board CN1 Table 19 3 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 35: Indoor Wiring Diagram

    CO DE component is optional, the NETADDRESS 0~15 16~31 32~47 48~63 actual shape shall prevail. FACTORY SETTING Figure 28 | 35 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 36: Outdoor Wiring Diagram

    Service Manual 7.5 Outdoor Wiring Diagram 7.5.1 Regular Single Zone (115V 12K) Figure 29 3 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 37 Service Manual 7.5.2 Regular & Max Performance Single Zone (9K & 12K) TRANSFORMER Figure 30 | 37 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 38 Service Manual 7.5.3 Regular Single Zone (18K & 24K) & Max Performance Single Zone (18K) Figure 31 3 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 39 Service Manual 7.5.4 Max Performance Single Zone (24K) Regular Single Zone (30K & 36K) Figure 32 | 39 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 40 Service Manual 7.5.5 Light Commercial Single Zone (36K for Cassette and Ducted IDU) Figure 33 4 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 41 Service Manual 7.5.6 Light Commercial Single Zone (48K & 60K) Figure 34 | 41 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 42: Wall Mounted Unit (Idu & Odu) Error Code Diagnosis And Solution

    FLASH PC 03 Low pressure protection TS13-INV 1 times Indoor units mode confl ict(match with multi outdoor unit) TS14 Table 20 4 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 43 Figure 36 The two photos above are for reference only, they may not be identical to the PCBs shipped with your equipment. | 43 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 44 For certain models, outdoor PCB can not be removed separately. In this case, the outdoor electric control box Replace IPM board should be replaced as a whole. Figure 37 4 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 45  While if the indoor unit has malfunction, the voltage will be a certain value. Figure 38 Figure 39 | 45 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 46     Z ero crossing detection error is only valid for the unit with AC fan motor, for other models, this error is invalid. 4 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 47     F or certain models, outdoor PCB can not be removed separately. In this case, the outdoor electric control box should be replaced as a whole. | 47 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 48 Input Terminal replaced. Otherwise, replace the ODU PCB. Black White White Black Figure 43 4 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 49 UVW output for DC fan motor Table 31 CN1 Communication with main PCB Figure 45 Signal Voltage 13.5-16.5V 0~6.5V 13.5-16.5V Table 32 | 49 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 50 For certain models, outdoor unit uses combination sensor, T3,T4 and TP are the same of sensor. Figure 47 5 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 51 T1 or T2 sensor faulty  Supposed causes Indoor PCB faulty  System problems, such as leakage or blocking Table 34 Troubleshooting: Figure 48 | 51 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 52 Ensure a proper connection good ? Replace the indoor main PCB Does the error still exist ? Replace the display board Figure 49 5 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 53 Check whether the refrigerant Check whether the refrigerant system is running normally system is running normally Figure 50 | 53 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 54 Figure 51 5 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 55 Resistance value Digital tester Resistance value (+)Red (-)Black (+)Red (-)Black ∞ ∞ (Several MΩ) (Several MΩ) – Table 38 Figure 53 Figure 52 | 55 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 56     F or certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control box should be replaced as a whole. Figure 55 5 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 57 OLP. Is it zero ? is normal? Replace the outdoor control PCB . Repair the refrigerant Replace the outdoor control PCB . system . Figure 56 | 57 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 58 Check whether the refrigerant Check whether the refrigerant system is func oning properly system is func oning properly Figure 58 5 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 59 Replace the outdoor main PCB removed separately. In this case, the outdoor electric control box should be replaced as a whole. Figure 59 | 59 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 60 Check whether the electric control box should be replaced as a whole. refrigerant system is ok refrigerant system is ok Figure 60 6 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 61 Trouble is solved Trouble is solved normally ? normally ? Replace the electric control box Replace the electric control box Figure 61 | 61 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 62 3. Check corresponding temperature sensor resistance value table. Figure 62 The picture and the value are only for reference, actual condition and specifi c value may vary. 6 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 63 16.1156 2.84421 0.73119 0.24512 15.3418 2.73823 0.70944 0.23916 14.6181 2.63682 0.68844 0.23338 13.918 2.53973 0.66818 0.22776 13.2631 2.44677 0.64862 0.22231 Table 44 | 63 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 64 4.562 90.66 16.94 4.426 86.49 16.32 4.294 82.54 15.73 4.167 78.79 15.16 4.045 75.24 14.62 3.927 71.86 14.09 3.812 Table 45 6 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 65 Performance Ducted Blue - Red Blue - Black 0.65Ω 0.37Ω 0.37Ω 1.82Ω 1.82Ω 1.03Ω 1.03Ω 0.10Ω 0.10Ω Red - Black Table 47 | 65 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 66 Normal resistance value Digital tester Normal resistance value (+)Red (-)Black (+)Red (-)Black ∞ ∞ (Several MΩ) (Several MΩ) (+)Red Table 48 Figure 65 6 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 67 If the value of the voltage is not in the range, the PCB must have problems and need to be replaced. Figure 68 Figure 66 Figure 67 | 67 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 68 Color of lead winding Normal Value Red - Blue Red - Yellow About 50Ω Brown - Orange Brown - White Table 49 6 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 69 33.8 31.5 27.8 26.3 24.9 3.03 2.85 2.53 2.28 2.08 3.25 3.00 2.66 2.54 2.33 3.38 3.15 2.78 2.63 2.49 Table 51 | 69 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 70: Disassembly Guide

    3. Bend the horizontal louver lightly to loosen the hooks, then remove the horizontal louver. (see CJ_EP_002) Figure 73 Figure 71 7 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 71 7. Pull the mandril of panel to remove it. 11. Pull the four clips to remove the display board. 8. Remove the panel assembly Figure 77 Figure 75 | 71 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 72 If you want to repair the main control board assembly, perform step 1 to step 6.; If you want to repair the electrical control box subassembly, perform the following steps. Figure 79 7 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 73 Figure 84 3. Remove the two screws and remove the fi xing board of the fan motor Figure 83 Screws Figure 85 | 73 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 74 3. Remove the two screws, then remove the horizontal swing motor (see Figure 143).     T he horizontal swing motor is located in panel assembly. 7 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 75 5. Remove 1 screw, then remove the ionizer generatorfor some units). The vertical swing motor and ionizer generator are located in chassis assembly. swing motor Figure 90 | 75 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 76 5. Bend the piping carefully, separate the chassis assembly(above) and the evaporator then take the evaporator out. Figure 92 2. Disassemble the pipe clamp board. Figure 95 Figure 93 7 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)

  • Page 77: Outdoor Unit

    Figure 97 4. Remove the screws of the front right panel and then remove the front right panel (2 screws). Figure 96 | 77 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 78 Water Collecting Cover Figure 100 7. Remove the screws of the rear net and then remove the rear net (2 screws). 7 8 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 79 4. Remove the screws of water collecting cover and then remove the water collecting cover (2 screws). Right Panel Figure 107 Water Collecting Cover Figure 105 | 79 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 80 (2 screws). Water Collecting Cover Figure 110 5. Remove the screws of the front panel and then remove the front panel (7 8 0 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 81 7. Remove the connector for the DR and reactor. 8. Then remove the electronic control board. Figure 116 3. Remove the electronic installing box subassembly (4 hooks). Figure 114 | 81 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 82 4. Remove the fi xing board (2 hooks). Figure 120 Figure 118 5. Disconnect the connectors from the electronic control board Figure 119 8 2 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 83 6. Then remove the electronic control board (4 hooks). Figure 122 3. Remove the electronic installing box subassembly (4 hooks). Figure 126 Figure 123 | 83 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 84 Remove the panel plate (refer to 9.4.1 Panel Plate) before disassembling fan. 1. Remove the nut securing the fan with a spanner. 2. Remove the fan. Figure 128 D-cut Figure 130 8 4 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 85 Remove the panel plate (refer to 9.41 Panel plate) before disassembling sound blanket. 1. Remove the sound blanket (side and top) Sound Blanket (top) Figure 133 Sound Blanket (side) Figure 132 | 85 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 86 1. Remove the fl ange nut of terminal cover and remove the terminal cover. Figure 135 Terminal Cover Figure 134 8 6 | Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 87 Alternatively, please visit our Service & Support webpage to fi nd FAQs, videos, service bulletins, and more; www.boschheatingcooling.com/service or use your cellphone to scan the code below. | 87 Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
  • Page 88 United States and Canada Bosch Thermotechnology Corp. 65 Grove St. Watertown, MA 02472 Tel: 866-642-3198 Fax: 954-776-5529 www.bosch-thermotechnology.us BTC 769102301 A /11.2022 Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.

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