Bosch Climate 5000 Series User manual

Service Manual
Ductless Air Conditioner / Heat Pump
Multi Zone Outdoor Units
Climate 5000 Series
BTC 769102304 A / 01.2023
WARNING:
fInstallation 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.
fIn 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.
fOnly contact a licensed contractor for repair
or maintenance of this unit.

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)

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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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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
1 Key to Symbols and Safety Instructions
1.1 Key to Symbols
Warnings
Warnings in this document are identified by a
warning triangle printed against a grey background.
Keywords at the start of a warning indicate the type and seriousness
of the ensuing risk if measures to prevent the risk are not taken.
The following keywords are defined and can be used in this document:
fDANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
fWARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
fCAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
fNOTICE is used to address practices not related to personal injury.
Important information
This symbol indicates important information where there is no risk to
people or property.
1.2 Safety
Please read safety precautions before installation
Incorrect installation due to ignoring instructions can cause serious damage or
injury.
WARNING: ELECTRICAL HAZARD
fDo not modify the length of the power supply cord or use an
extension cord to power the unit.
fDo not share the electrical outlet with other appliances.
Improper or insufficient power supply can cause fire or
electrical shock.
WARNING: INSTALLATION REQUIREMENTS
fInstallation 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.
fIn 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.
fOnly contact a licensed contractor for repair or maintenance
of this unit.
fOnly use the included accessories, parts, and specified
parts for installation. Using non-standard parts can cause
water leakage, electrical shock, fire, and can cause the unit
to fail.
fInstall the unit in a solid location that can support the unit’s
weight. If the chosen location cannot support the unit’s
weight, or the installation is not done properly, the unit may
drop and cause serious injury and/or damage.
WARNING:
fThis product can expose you to chemicals including Lead
and 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.

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
WARNING: ELECTRICAL HAZARD
fFor all electrical work, follow all local and national wiring
standards, regulations, and the Installation Manual.
The power supply to the outdoor unit requires a service
disconnect at the unit. Only use a dedicated circuit. Never
share a power source connected to this system. Insufficient
electrical capacity or defects in electrical work can cause
electrical shock or fire.
fFor all electrical work, use the specified cables. Connect
cables tightly, and clamp them securely to prevent external
forces from damaging the terminal. Improper electrical
connections can overheat and cause fire, and may also
cause shock.
fAll wiring must be properly arranged to ensure that the
control board cover can close properly. If the control board
cover is not closed properly, it can lead to corrosion and
cause the connection points on the terminal to heat up,
catch fire, or cause electrical shock.
fIn certain functional environments, such as kitchens, server
rooms, etc., the use of specially designed air-conditioning
units are highly recommended.
fIf the power supply cord is damaged, it must be replaced
by the manufacturer, its service agent or similarly qualified
persons such as a licensed electrician in order to avoid a
hazard.
fThe product must be properly grounded at the time of
installation, or electrical shock may occur.
WARNING: FIRE HAZARD
fFor units that have an auxiliary electric heater, do not
install the unit within 1 meter (3 feet) of any combustible
materials.
fDo not install the unit in a location that may be exposed
to combustible gas leaks. If combustible gas accumulates
around the unit, it may cause fire.
fDo not operate your air conditioner in a wet room such as a
bathroom or laundry room. Too much exposure to water can
cause electrical components to short circuit.
NOTICE: PROPERTY DAMAGE
fInstall condensate drainage piping according to the
instructions in this manual. Improper condensate drainage
may cause water damage to your home and property.
CAUTION: CONTAINS REFRIGERANT
fThis air-conditioning unit contains fluorinated gases. For
specific information on the type of gas and the amount,
please refer to the relevant label on the outdoor unit itself.
fInstallation, service, maintenance and repair of this unit
must be performed by a certified technician.
fProduct removal and recycling must be performed by a
certified technician.
fIf the system has a leak-detection system installed, it must
be checked for leaks at least every 12 months.
fWhen the unit is checked for leaks, proper record-keeping of
all checks is required.

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
2 Part Names and Model Numbers
2.1 Outdoor Models
Voltage Capacity Max Zone Regular Outdoor Units Max Performance Outdoor Units
208-230V
18K 2 BMS500-AAM018-1CSXRC BMS500-AAM018-1CSXHC
27K 3 BMS500-AAM027-1CSXRC BMS500-AAM027-1CSXHC
36K 4 BMS500-AAM036-1CSXRC BMS500-AAM036-1CSXHC
48K 5 BMS500-AAM048-1CSXRC BMS500-AAM048-1CSXHC
Table 1
2.2 Indoor Models
Voltage Capacity Wall Mounted Indoor Units 4-Way Cassette Indoor Units Ducted Indoor Units
115V 12K BMS500-AAS012-0AHWXC – –
208-230V
6K BMS500-AAU006-1AHWXC – –
9K BMS500-AAU009-1AHWXC BMS500-AAU009-1AHCXB BMS500-AAU009-1AHDXB
12K BMS500-AAU012-1AHWXC BMS500-AAU012-1AHCXB BMS500-AAU012-1AHDXB
18K BMS500-AAU018-1AHWXC BMS500-AAU018-1AHCXB BMS500-AAU018-1AHDXB
24K BMS500-AAU024-1AHWXC BMS500-AAU024-1AHCXC BMS500-AAU024-1AHDXB
30K BMS500-AAU030-1AHWXC – –
36K BMS500-AAU036-1AHWXC BMS500-AAU036-1AHCXC BMS500-AAU036-1AHDXB
Table 2
For Indoor Units, please refer to Indoor Unit Service Manual.
2.3 Multizone Congurations
Capacity 2 ZONE 3 ZONE 4 ZONE 5 ZONE
18K
6+6
6+9
6+12
9+9
9+12
12+12
27K
6+12 6+6+6
6+18 6+6+9
9+9 6+6+12
9+12 6+6+18
9+18 6+9+9
12+12 6+9+12
12+18 6+9+18
18+18 6+12+12
6+12+18
9+9+9
9+9+12
9+9+18
9+12+12
12+12+12
Table 3

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
Capacity 2 ZONE 3 ZONE 4 ZONE 5 ZONE
36K
6+18 6+6+12 6+6+6+6
6+24 6+6+18 6+6+6+9
9+18 6+6+24 6+6+6+12
9+24 6+9+12 6+6+6+18
12+12 6+9+18 6+6+6+24
12+18 6+9+24 6+6+9+9
12+24 6+12+12 6+6+9+12
18+18 6+12+18 6+6+9+18
18+24 6+12+24 6+6+9+24
24+24 6+18+18 6+6+12+12
6+18+24 6+6+12+18
9+9+9 6+6+12+24
9+9+12 6+9+9+9
9+9+18 6+9+9+12
9+9+24 6+9+9+18
9+12+12 6+9+9+24
9+12+18 6+9+12+12
9+12+24 6+9+12+18
9+18+18 6+12+12+12
12+12+12 6+12+12+18
12+12+18 9+9+9+9
12+12+24 9+9+9+12
12+18+18 9+9+9+18
9+9+12+12
9+9+12+18
9+12+12+12
12+12+12+12
Table 4

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
Capacity 2 ZONE 3 ZONE 4 ZONE 5 ZONE
48K
9+24 6+6+24 6+6+6+18 6+6+6+6+9
9+30 6+6+30 6+6+6+24 6+6+6+6+12
9+36 6+6+36 6+6+6+30 6+6+6+6+18
12+24 6+9+24 6+6+6+36 6+6+6+6+24
12+30 6+9+30 6+6+9+18 6+6+6+6+30
12+36 6+9+36 6+6+9+24 6+6+6+6+36
18+18 6+12+18 6+6+9+30 6+6+6+9+9
18+24 6+12+24 6+6+9+36 6+6+6+9+12
18+30 6+12+30 6+6+12+12 6+6+6+9+18
18+36 6+12+36 6+6+12+18 6+6+6+9+24
24+30 6+18+18 6+6+12+24 6+6+6+9+30
24+36 6+18+24 6+6+12+30 6+6+6+9+36
30+30 6+18+30 6+6+12+36 6+6+6+12+12
6+18+36 6+6+18+18 6+6+6+12+18
6+24+24 6+6+18+24 6+6+6+12+24
6+24+30 6+6+18+30 6+6+6+12+30
9+9+18 6+6+24+24 6+6+6+18+18
9+9+24 6+9+9+12 6+6+6+18+24
9+9+30 6+9+9+18 6+6+9+9+9
9+9+36 6+9+9+24 6+6+9+9+12
9+12+12 6+9+9+30 6+6+9+9+18
9+12+18 6+9+9+36 6+6+9+9+24
9+12+24 6+9+12+12 6+6+9+9+30
9+12+30 6+9+12+18 6+6+9+12+12
9+12+36 6+9+12+24 6+6+9+12+18
9+18+18 6+9+12+30 6+6+9+12+24
9+18+24 6+9+12+36 6+6+9+12+30
9+18+30 6+9+18+18 6+6+9+18+18
9+18+36 6+9+18+24 6+6+9+18+24
9+24+24 6+9+18+30 6+6+12+12+12
9+24+30 6+12+12+12 6+6+12+12+18
12+12+12 6+12+12+18 6+6+12+12+24
12+12+18 6+12+12+24 6+6+12+18+18
12+12+24 6+12+12+30 6+9+9+9+9
12+12+30 6+12+18+18 6+9+9+9+12
12+12+36 6+12+18+24 6+9+9+9+18
12+18+18 9+9+9+9 6+9+9+9+24
12+18+24 9+9+9+12 6+9+9+9+30
12+18+30 9+9+9+18 6+9+9+12+12
12+24+24 9+9+9+24 6+9+9+12+18
18+18+18 9+9+9+30 6+9+9+12+24
18+18+24 9+9+9+36 6+9+9+18+18
9+9+12+12 6+9+12+12+12
9+9+12+18 6+9+12+12+18
9+9+12+24 6+9+12+12+24
9+9+12+30 6+12+12+12+12
9+9+18+18 6+12+12+12+18
9+9+18+24 9+9+9+9+9
9+12+12+12 9+9+9+9+12
9+12+12+18 9+9+9+9+18
9+12+12+24 9+9+9+9+24
9+12+12+30 9+9+9+12+12
9+12+18+18 9+9+9+12+18
9+12+18+24 9+9+9+12+24
12+12+12+12 9+9+12+12+12
12+12+12+18 9+9+12+12+18
12+12+12+24 9+12+12+12+12
12+12+18+18 12+12+12+12+12
Table 5

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
3 Dimensions
3.1 Outdoor Unit
Split type outdoor unit mounting dimensions
Figure 1
Split Type Outdoor Unit
H
W
W
H
A
B
D
Outdoor Model Outdoor Unit Dimensions mm (in.)
W x H x D
Mounting Dimensions
mm (in.)
Distance A Distance B
BMS500-AAM018-1CSXRC 890x673x342 (35.04x26.5x13.46) 663 (26.1) 354 (13.94)
BMS500-AAM018-1CSXHC,
BMS500-AAM027-1CSXRC,
BMS500-AAM027-1CSXHC,
BMS500-AAM036-1CSXRC
946x810x410 (37.24x31.89x16.14) 673 (26.5) 403 (15.87)
BMS500-AAM036-1CSXHC,
BMS500-AAM048-1CSXRC,
BMS500-AAM048-1CSXHC
952x1333x415 (37.48x52.48x16.34) 634 (24.96) 404 (15.9)
Table 6

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
4 Refrigerant Cycle Diagrams - Outdoor Models
4.1 For Model: 18K Multi Zone Regular System
BMS500-AAM018-1CSXRC
Figure 2
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A
CAPILLARY TUBE
EXV B
LIQUID VALVE B
GAS VALVE B
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
Accumulator High pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
4.2 For Model: 18K Multi ZoneMax Performance System
BMS500-AAM018-1CSXHC
Figure 3
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A
CAPILLARY TUBE
EXV B
LIQUID VALVE B
GAS VALVE B
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
AccumulatorHigh pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
4.3 For Models: 27K Multi Zone Regular, 27K Multi Zone
Max Performance System BMS500-AAM027-1CSXRC,
BMS500-AAM027-1CSXHC
Figure 4
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
CAPILLARY TUBE
EXV A
LIQUID VALVE A
GAS VALVE A
EXV B
LIQUID VALVE B
GAS VALVE B
EXV C
LIQUID VALVE C
GAS VALVE C
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
Accumulator High pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
4.4 For Models: 36K Multi Zone Regular System
BMS500-AAM036-1CSXRC
Figure 5
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A
CAPILLARY TUBE
EXV B
LIQUID VALVE B
GAS VALVE B
EXV C
LIQUID VALVE C
GAS VALVE C
EXV D
LIQUID VALVE D
GAS VALVE D
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
AccumulatorHigh pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
4.5 For Model: 36K Multi Zone Max Performance System
BMS500-AAM036-1CSXHC
Figure 6
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A
EXV B
LIQUID VALVE B
GAS VALVE B
EXV C
LIQUID VALVE C
GAS VALVE C
EXV D
LIQUID VALVE D
GAS VALVE D
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
AccumulatorHigh pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
EXV F
Radiator for IPM
4.6 For Model: 48K Multi Zone Regular System
BMS500-AAM048-1CSXRC
Figure 7
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A
EXV B
LIQUID VALVE B
GAS VALVE B
EXV C
LIQUID VALVE C
GAS VALVE C
EXV D
LIQUID VALVE D
GAS VALVE D
EXV E
LIQUID VALVE E
GAS VALVE E
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
AccumulatorHigh pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
T2B-E
EXV F
Radiator for IPM

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
4.7 For Model: 48K Multi Zone Max Performance System
BMS500-AAM048-1CSXHC
Figure 8
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A
CHECK VALVE
EXV B
LIQUID VALVE B
GAS VALVE B
EXV C
LIQUID VALVE C
GAS VALVE C
EXV D
LIQUID VALVE D
GAS VALVE D
EXV E
LIQUID VALVE E
GAS VALVE E
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
AccumulatorHigh pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
T2B-E
EXV F
Plate heat
exchanger EXV G
Radiator for IPM

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5 Wiring Diagrams
5.1 For Model: 18K Multi Zone Regular System
BMS500-AAM018-1CSXRC
Figure 9
5
Compressor Crankcase Heater
Base Pan Heater
Items listed as OPTIONAL depend on
the specific model installed.

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5.2 For Model: 18K Multi Zone Max Performance System
BMS500-AAM018-1CSXHC
Figure 10
Items listed as OPTIONAL depend on
the specific model installed.

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5.3 For Models: 27K Multi Zone Regular Heat & Max Performance
System BMS500-AAM027-1CSXRC, BMS500-AAM027-1CSXHC
Figure 11
Items listed as OPTIONAL depend on
the specific model installed.
This symbol indicates field wiring
Notes:

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5.4 For Model: 36K Multi Zone Regular System
BMS500-AAM036-1CSXRC
Figure 12
Items listed as OPTIONAL depend on
the specific model installed.
This symbol indicates field wiring
Notes:

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5.5 For Model: 36K Multi Zone Max Performance System
BMS500-AAM036-1CSXHC
Figure 13
MAIN CONTRO L BOARD
REVERSINGVALVE
ELEC TRONIC EXPANSIVEVALVE
HEAT _D CHASSIS HEAT ER
HEAT _Y
COMP. TOP OLPTEMP. SENSORCOMP TOP
16022000036850
Items listed as OPTIONAL depend on
the specific model installed.
Notes:
Compressor Crankcase
Heater
Base Pan Heater

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5.6 For Model: 48K Multi Zone Regular System
BMS500-AAM048-1CSXRC
Figure 14
MAIN CONTRO L BOARD
REVERSINGVALVE
ELEC TRONIC EXPANSIVEVALVE
HEAT _D CHASSI S HEATER
HEAT _Y
COMP. TOP OLPTEMP. SENSORCOMP TOP
16022000036851
Items listed as OPTIONAL depend on
the specific model installed.
Notes:
Compressor Crankcase
Heater
Base Pan Heater

20 |
Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5.7 For Model: 48K Multi Zone Max Performance System
BMS500-AAM048-1CSXHC
Figure 15
Items listed as OPTIONAL depend on
the specific model installed.
Notes:
Compressor Crankcase
Heater
Base Pan Heater