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

Bosch Climate 5000 Series Service Manual

Multi zone ductless air conditioner/heat pump
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Service Manual
Multi Zone Ductless Air Conditioner/Heat Pump
Climate 5000 Series - Gen 4

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Summary of Contents for Bosch Climate 5000 Series

  • Page 1 Service Manual Multi Zone Ductless Air Conditioner/Heat Pump Climate 5000 Series - Gen 4...
  • Page 2 Service Manual Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 3 Over current failure of outdoor DC fan motor 7.2. Wiring Diagrams 10.4.8 (PC 30) - High pressure protection 10.4.9 (PC 31) - Low pressure protection Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 4 11.2.3 Outdoor Units - BMS500-AAM048-1CSXRD, BMS500-AAM048-1CSXHD 11.3. Fan Assembly 11.4. Fan Motor 11.5. Sound blanket 11.6. Four-way valve (for heat pump models) 11.7. Compressor Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 5 State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 6 Too much exposure to water can cause electrical components to short circuit. into the system. Do NOT use any other refrigerant type. Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 7 27K Regular BMS500-AAM027-1CSXRD 27K Max Performance BMS500-AAM027-1CSXHD 36K Regular BMS500-AAM036-1CSXRD 36K Max Performance BMS500-AAM036-1CSXHD 48K Regular BMS500-AAM048-1CSXRD 48K Max Performance BMS500-AAM048-1CSXHD Table 3 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 8 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 9 The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere. Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 10 The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations. 10 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 11 Multi Zone Pairing Information 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6+6+6 6+6+9 6+12 6+9+9 BMS500-AAM018-1CSXRD 6+18 9+12 12+12 Table 8 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 11...
  • Page 12 6+12+18 6+6+12+18 9+12+12+12 6+9+9+9+9 6+12+24 6+6+12+24 12+12+12+12 6+9+9+9+12 6+18+18 6+6+18+18 6+9+9+9+18 9+9+9 6+9+9+9 9+9+9+9+9 9+9+12 6+9+9+12 9+9+9+9+12 9+9+18 6+9+9+18 Table 10 12 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 13 6+6+24 6+9+9 9+12 6+9+12 BMS500-AAM018-1CSXHD 9+18 6+9+18 9+24 6+12+12 12+12 6+12+18 12+18 9+9+9 12+24 9+9+12 18+18 9+9+18 9+12+12 12+12+12 Table 12 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 13...
  • Page 14 6+12+30 12+18+18 6+6+18+24 9+9+9+9 12+12+12+24 6+6+12+12+12 18+30 6+18+18 12+18+24 6+9+9+9 9+9+9+12 12+12+18+18 6+9+9+9+9 24+24 6+18+24 18+18+18 6+9+9+12 9+9+9+18 6+9+9+9+12 Table 14 14 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 15 9+9+9+9+12+12 6+6+9+9+18 6+9+9+12+18 9+9+9+12+12 6+6+6+9+12+12 6+9+9+9+9+9 9+9+9+9+12+18 6+6+9+9+24 6+9+9+12+24 9+9+9+12+18 6+6+6+9+12+18 6+9+9+9+9+12 9+9+9+9+12+24 6+6+9+12+12 6+9+9+18+18 9+9+9+12+24 6+6+6+9+12+24 6+9+9+9+9+18 9+9+9+12+12+12 Table 16 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 15...
  • Page 16 (946 x 810 x 410) 37.5 x 52.5 x16.34 BMS500-AAM048-1CSXRD, BMS500-AAM048-1CSXHD 25.0 (634) 15.9 (404) (952 x 1333 x 415) Table 17 16 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 17 Refrigerant Cycle Diagrams - Outdoor Models For Model: 18K Multi Zone Regular System BMS500-AAM018-1CSXRD Figure 2 For Model: 18K Multi ZoneMax Performance System BMS500-AAM018-1CSXHD Figure 3 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 17...
  • Page 18 For Models: 27K Multi Zone Regular, 27K Multi Zone Max Performance System BMS500-AAM027-1CSXRD, BMS500-AAM027-1CSXHD Figure 4 For Models: 36K Multi Zone Regular System BMS500-AAM036-1CSXRD Figure 5 18 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 19 For Model: 36K Multi Zone Max Performance System BMS500-AAM036-1CSXHD Indoor Outdoor Figure 6 For Model: 48K Multi Zone Regular System BMS500-AAM048-1CSXRD Figure 7 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 19...
  • Page 20 Service Manual For Model: 48K Multi Zone Max Performance System BMS500-AAM048-1CSXHD Figure 8 20 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 21 Service Manual Wiring Diagrams For Model: 18K Multi Zone Regular System BMS500-AAM018-1CSXRD Figure 9 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 21...
  • Page 22 Service Manual For Model: 18K Multi Zone Max Performance System BMS500-AAM018-1CSXHD Figure 10 22 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 23 Service Manual For Models: 27K Multi Zone Regular Heat & Max Performance System BMS500-AAM027-1CSXRD, BMS500-AAM027-1CSXHD Figure 11 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 23...
  • Page 24 Service Manual For Model: 36K Multi Zone Regular System BMS500-AAM036-1CSXRD Figure 12 24 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 25 Service Manual For Model: 36K Multi Zone Max Performance System BMS500-AAM036-1CSXHD Figure 13 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 25...
  • Page 26 Service Manual For Model: 48K Multi Zone Regular & Max Performance System BMS500-AAM048-1CSXRD, BMS500-AAM048-1CSXHD Figure 14 26 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 27 IDU and ODU (m) (15) (15) (15) (15) Max. height difference 33ft 33ft 33ft 33ft between IDUs (m) (10) (10) (10) (10) Table 20 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 27...
  • Page 28 1/2”-->3/8” 8-733-962-700 BMS500-AAM027-1CSXHD 1/4”-->3/8” 1/2”-->5/8” 3/8”-->1/2” Max Performance 1/2”-->3/8” 8-733-962-701 BMS500-AAM036-1CSXHD 1/4”-->3/8” 1/2”-->5/8” 1/2”-->3/8” 1/4”-->3/8” 8-733-962-702 BMS500-AAM048-1CSXHD 1/2”-->5/8” 3/8”-->1/2” Table 24 28 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 29 Appliance Amps (A) Cable Size - AWG ≤ 7 7 - 13 13 - 18 18 - 25 25 - 30 Table 25 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 29...
  • Page 30 Refer to the following figures for unit wiring . Run the main power cord through the lower line-outlet of the cord clamp. 30 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 31 1(B) 2(B) 3(B) 1(C) 2(C) 3(C) 1(D) 2(D) 3(D) L1 L2 Model A Model B L1 L2 Model C Figure 17 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 31...
  • Page 32 1(D) 2(D) 3(D) 1(E) 2(E) 3(E) Model B Model A L1 L2 Model C One-six models: L1 L2 Model A Figure 18 32 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 33 Table 27 manufacturers' specification. Fully open the 2- and 3-way valves and tighten the cap of the 2- and 3-way valves. Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 33...
  • Page 34 Mount the caps of service port and 2- and 3-way valves. Use a torque wrench to tighten the caps to a torque of 18 N.m. Figure 22 34 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 35 (vertically to the floor) and set to HIGH fan mode. • The optimum performance will be achieved during this operating temperature zone. Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 35...
  • Page 36 9.3.11 EEPROM Parameter Error If main chip does not receive feedback from EEPROM chip or parameter check error, the unit ceases operation. 36 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 37 HeatT4Zone2l Heating 9 current limit value HeatT4Zone1l Heating 5 current limit value Heating stop protection current HeatStopl Figure 25 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 37...
  • Page 38 Use the following table and final capacity request to confirm the operating frequency. Frequency (Hz) L_F2 L_F2 L_F1 L_F2 Amendatory capacity demand. Table 31 38 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 39 T1 Ts Capacity area Capacity area Norm code (N) Figure 30 Model Table 32 The final result is an integer. Figure 32 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 39...
  • Page 40 T3 remains at TCDE2°C or above for 80 seconds. • The machine runs for 10 consecutive minutes in defrost mode. Figure 34 40 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 41 AD value is detected by the chip for 36K Max Performance, actual AD value is AD value. plus AD Value of DC Voltage Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 41...
  • Page 42 If the temperature is higher than 70°C, the digital display shows “70.” If the indoor unit is not connected, the digital display shows: “--” 42 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 43 The high pressure sensor detects the pressure corresponding to The digital display shows: “--” the condensation temp (Tc) Reserved Table 34 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 43...
  • Page 44 The voltage in P3 and P4 in outdoor PCB is approximately 310V. The voltage in P5 and P6 in outdoor PCB is approximately 310V. 44 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 45 IPM Module board  Additional Refrigerant    Electric Control Box  High pressure switch  Low pressure switch  Table 37 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 45...
  • Page 46 Service Manual 10.2 ODU PCB & IPM 10.2.1 PCB: Multi Zone Regular 18K BMS500-AAM018-1CSXRD Regular 18K Figure 36 46 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 47 Used for testing COMPRESSOR Connect to compressor; 0V AC (Standy), 10-200V AC (Running) DC-FAN CN32 Connect to DC Fan Table 38 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 47...
  • Page 48 BMS00 AAM048-1CSXRD, BMS500-AAM018-1CSXHD, BMS500-AAM027-1CSXHD, BMS500-AAM036-1CSXHD, BMS500-AAM048-1CSXHD MaxP 18K, Regular & MaxP 27K, Regular 36K & Max P, Regular & MaxP 48K Figure 37 48 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 49 EEV-B CN16 EEV-C CN22 EEV-D CN14 Connect to Electric Expansion Valve EEV-E CN13 EEV-F EEV-1 CN53 EEV-2 CN44 EEV-3 Table 39 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 49...
  • Page 50 If the indoor unit is not connected, the digital display shows: “――” Indoor unit D evaporator outlet temperature (T Indoor unit E evaporator outlet temperature (T Table 40 50 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 51 00: No Fault, 01: T2B-A fault, 02: T2B-B, 03: T2B-C Fault, 04: T2B-D Fault, 05: T2B-E Fault, 06: T2B-F Fault T2B fault (The display priority is A-B-C-D-E-F) Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 51...
  • Page 52 The high pressure sensor detects the pres- sure corresponding to the condensation The digital display shows: “--” temperature (Tc) Reserved   Table 41 52 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 53 Low ambient temperature protection PC A1 Condensation protection of refrigerant pipe LC 06 High temperature protection of Inverter module (IPM) TS32 Table 42 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 53...
  • Page 54 Figure 41 The photo above is for reference only, it may not be identical to the PCB shipped with your equipment. 54 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 55 3 for tri zone, 4 for qua zone). Refer Figure 53. No first time No second time Change outdoor unit PCB assembly(include wiring) totally Figure 42 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 55...
  • Page 56 Figure 46 Check point button, press 1 time to check how many indoor units are connected. Standby Figure 47 Figure 44 56 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 57 Replace outdoor main board, and then check whether the system can run normally Replace the electric control Trouble is solved Figure 48 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 57...
  • Page 58 Use a multimeter to test the DC voltage between black pin and white pin of signal wire. The normal value should be around 5V. Figure 50 Figure 49 58 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 59 (EC 54) • Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited (EC 56) Figure 52 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 59...
  • Page 60 , replace the or inductance is normal inductance or inductance is normal inductance outdoor main PCB outdoor main PCB Figure 53 60 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 61 0 Replace the PFC module (IPM Problem is solved module) Figure 54 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 61...
  • Page 62 Service Manual Inductance Figure 55 Two ports of the inductance Figure 56 62 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 63 Replace the is normal through index 1? is normal through index 1? Replace the fan motor Replace the fan motor Figure 57 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 63...
  • Page 64 1 - RED Yellow 0~6.5V 3- BLACK 4- WHITE Blue 13.5~16.5V 5- YELLOW 6- BLUE Table 50 Figure 58 Figure 59 64 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 65 Otherwise, the PCB must has problems and need to be replaced. Figure 60 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 65...
  • Page 66 Replace the outdoor Check whether the refrigerant Check whether the refrigerant system is ok system is ok Figure 61 66 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 67 Service Manual Figure 62 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 67...
  • Page 68 Does the system has sufficient amount of refrigerant as amount of refrigerant? defined in the IOM System should operate normally Figure 63 68 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 69 Service Manual Figure 64 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 69...
  • Page 70 Does a problem still exist? Recycle the overcharged Is system pressure too high? refrigerant Check whether the refrigerant system is running normally Figure 65 70 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 71 Appendix 2. Ye s Replace outdoor main PCB Replace outdoor main PCB Replace high pressure valve assembly Figure 66 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 71...
  • Page 72 Clean the heat exchanger exchanger is dirty exchanger is dirty Replace outdoor PCB Check refrigerant level and add as necessary Figure 67 72 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 73 ? Check whether the refrigerant system is Check whether the refrigerant system is in working order in working order Figure 68 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 73...
  • Page 74 Is it zero? Replace the outdoor PCB. Refrigerant leak should be repaired Replace the outdoor PCB. and unit properly recharged. Figure 69 74 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 75 Replace the fan motor symmetrical Check the fan three-phase output for obvious open Replace the main PCB circuit Problem is solved Figure 70 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 75...
  • Page 76 Check the compressor three- phase output for obvious Replace the main PCB open circuit Trouble is solved Figure 72 76 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 77 Inverter module of PCB faulty Table 59 Troubleshooting Power off,then restart the unit 2 minutes later. Replace the inverter module PCB. Figure 73 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 77...
  • Page 78 (MVI ) of the main EXV . Does a problem remain Replace outdoor PCB Figure 74 78 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 79 . Is it within acceptable Replace the sensor . parameters ? Replace the outdoor main PCB Figure 75 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 79...
  • Page 80 1 and pin 2. Is it lower than 0.5V? Rep lace the sensor . Replace outdoor PCB Figure 76 80 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 81 Repair the leakage and recharge present ? the refrigerant . Check System for blockages and clear blockages if present . Figure 77 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 81...
  • Page 82 PCB and IPM radiator. Replace the outdoor Are they fixed tightly? control PCB. Tighten the screws and apply silicon grease. Figure 78 82 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 83 L and N well or Reconnect it well between L and N is normal correctly Does a problem remain? Replace outdoor PCB Figure 79 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 83...
  • Page 84 Room temp.(T1) sensor, • Indoor coil temp.(T2) sensor, • Outdoor coil temp.(T3) sensor, • Outdoor ambient temp.(T4) sensor, • Compressor discharge temp.(T5) sensor. 84 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 85 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 66 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 85...
  • Page 86 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 67 86 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 87 27K Max Performance 36K Max Performance Blue - Red Blue - Black 1.02 Ω 1.04 Ω 0.65Ω 0.37Ω Red - Black Table 68 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 87...
  • Page 88 Normal resistance value Digital tester Normal resistance value (+)Red (-)Black (+)Red (-)Black ∞ ∞ (Several MΩ) (Several MΩ) (+)Red Table 69 Figure 83 88 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 89 Step 2. Turn off the power, use a digital tester to measure the resistance. The value should be between 1.8~2.5 KΩ. Figure 85 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 89...
  • Page 90 Measure the resistance and voltage (to ground) of the reactor. The normal resistance should be around 0.1 ohm. Otherwise,the reactor must have malfunctioned. Figure 87 90 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 91 Remove the screws of the top cover and then remove the top cover (3 screws). One of the screws is located underneath the big handle. Figure 91 Figure 89 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 91...
  • Page 92 Remove the screws of the top cover and then remove the top cover (4 screws). Two of the screws is located underneath the big handle. Right Panel Front Panel Figure 95 Figure 93 92 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 93 Figure 98 Figure 96 Remove the screws of the right panel and then remove the right panel (12 screws). Figure 97 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 93...
  • Page 94 Remove the seven screws of the front panel and then remove the front panel. Unfix the four screws of the top cover and then remove it. Figure 100 Figure 102 94 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 95 Remove the screws on the back of the right panel and then remove the right panel and rear net.(9 screws) Figure 106 Ture over the electronic control box subassembly. Figure 104 Figure 107 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 95...
  • Page 96 Remove the support of electronic control box. Pull out the connector, remove one screw and then remove the keyboard subassembly on terminal board. Figure 109 Figure 111 96 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 97 Figure 113 Remove 8 fixing screws. Turn over the electronic control box subassembly. Figure 116 Figure 114 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 97...
  • Page 98 11. Pull out the connector, remove one screw and then remove the keyboard subassembly on terminal board. Figure 120 Figure 118 98 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 99 Remove the fixing screws of the fan motor (4 screws) Remove the fan motor. Sound Blanket(top) Sound Blanket(side) Figure 122 Figure 121 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 99...
  • Page 100 Heat up the brazed parts and then detach the the four-way valve and the pipe. Remove the four-way valve assembly with pliers. Terminal Cover Figure 124 Figure 123 100 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 101 Alternatively, please visit our Service & Support webpage to find FAQs, videos, service bulletins, and more; www.bosch-homecomfort.us/service or use your cellphone to scan the code below. Figure 126 Figure 128 Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 101...
  • Page 102 Service Manual NOTES: 102 | Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025)
  • Page 103 Service Manual NOTES: Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump - BTC 769202304 A (04.2025) | 103...
  • Page 104 United States and Canada Bosch Thermotechnology Corp. 65 Grove St. Watertown, MA 02472 Tel: 800-283-3787 www.bosch-homecomfort.us BTC 769202304 A / 04.2025 Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.