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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
Table of Contents
1 Key to Symbols and Safety Instructions 4
1.1 Key to Symbols 4
1.2 Safety 4
2 Part Names and Model Numbers 6
2.1 Outdoor Models 6
2.2 Indoor Models 6
2.3 Multizone Configurations 6
3 Dimensions 9
3.1 Outdoor Unit 9
4 Refrigerant Cycle Diagrams - Outdoor Models 10
4.1 For Model: 18K Multi Zone Regular System
BMS500-AAM018-1CSXRC 10
4.2 For Model: 18K Multi ZoneMax Performance System
BMS500-AAM018-1CSXHC 10
4.3 For Models: 27K Multi Zone Regular, 27K Multi Zone
Max Performance System BMS500-AAM027-1CSXRC,
BMS500-AAM027-1CSXHC 11
4.4 For Models: 36K Multi Zone Regular System
BMS500-AAM036-1CSXRC 11
4.5 For Model: 36K Multi Zone Max Performance System
BMS500-AAM036-1CSXHC 12
4.6 For Model: 48K Multi Zone Regular System
BMS500-AAM048-1CSXRC 12
4.7 For Model: 48K Multi Zone Max Performance System
BMS500-AAM048-1CSXHC 13
5 Wiring Diagrams 14
5.1 For Model: 18K Multi Zone Regular System
BMS500-AAM018-1CSXRC 14
5.2 For Model: 18K Multi Zone Max Performance System
BMS500-AAM018-1CSXHC 15
5.3 For Models: 27K Multi Zone Regular Heat & Max Performance
System BMS500-AAM027-1CSXRC,
BMS500-AAM027-1CSXHC 16
5.4 For Model: 36K Multi Zone Regular System
BMS500-AAM036-1CSXRC 17
5.5 For Model: 36K Multi Zone Max Performance System
BMS500-AAM036-1CSXHC 18
5.6 For Model: 48K Multi Zone Regular System
BMS500-AAM048-1CSXRC 19
5.7 For Model: 48K Multi Zone Max Performance System
BMS500-AAM048-1CSXHC 20
6 Installation Details 21
6.1 Torque Requirements 21
6.2 Connecting the Cables 21
6.3 Pipe Length and the Elevation 21
6.4 First Time Installation 22
6.5 Adding the Refrigerant to an Existing System 22
6.6 Collecting the Refrigerant Into the Outdoor Unit 24
6.7 Evacuation of the Complete Refrigeration Circuit, Indoor and
Outdoor Unit. 24
6.8 Operation Characteristics 25
7 Electronic Functions 26
7.1 Abbreviation 26
7.2 Electric Control Working Environment 26
7.3 Main Protection 26
7.4 Control and Functions 28
8 Troubleshooting 37
8.1 Multi Zone Outdoor Unit Error Codes 38
8.2 Quick Check by Error Codes 39
8.3 ODU PCB & IPM 40
8.4 Outdoor Unit Display 47
8.5 Diagnosis and Solution 52
9 Disassembly Guide 87
9.1 Outdoor Unit - BMS500-AAM018-1CSXRC 87
9.2 Outdoor Unit - BMS500-AAM027-1CSXRC,
BMS500-AAM018-1CSXHC, BMS500-AAM027-1CSXHC 91
9.3 Outdoor Unit - BMS500-AAM036-1CSXHC,
BMS500-AAM048-1CSXRC, BMS500-AAM048-1CSXHC 97
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