Bosch BMS500-AAU012-1AHWXC User Manual

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

Bosch BMS500-AAU012-1AHWXC Specifications

General

Cooling Capacity	12000 BTU
HSPF	10
Dehumidification Capacity	2.5 pints/hour
Remote Control	Yes
Timer	24-Hour
Sleep Mode	Yes
Auto Restart	Yes
Filter Type	Washable
Type	Split System
Noise Level (Outdoor)	50 dB
Refrigerant	R410A
Warranty	5 Years

Summary

Key to Symbols and Safety Instructions

Safety Precautions

Provides safety precautions before installation and general safety warnings.

Wiring Diagrams

18K Multi Zone Regular System Wiring

Provides the wiring diagram for a specific outdoor unit model.

18K Multi Zone Max Performance System Wiring

Provides the wiring diagram for a specific outdoor unit model.

27K Multi Zone System Wiring

Provides wiring diagrams for specific outdoor unit models.

36K Multi Zone Regular System Wiring

Provides the wiring diagram for a specific outdoor unit model.

36K Multi Zone Max Performance System Wiring

Provides the wiring diagram for a specific outdoor unit model.

48K Multi Zone Regular System Wiring

Provides the wiring diagram for a specific outdoor unit model.

48K Multi Zone Max Performance System Wiring

Provides the wiring diagram for a specific outdoor unit model.

Electronic Functions

Main Protection Mechanisms

Details various protection mechanisms for the compressor, fan, and inverter.

Troubleshooting

Outdoor Unit Error Codes

Lists and explains various error codes displayed by the outdoor unit.

Quick Check by Error Codes

Provides a table for quickly diagnosing issues based on error codes.

ODU PCB & IPM Board Details

Outdoor Unit Digital Display

Disassembly Guide

Outdoor Unit BMS500-AAM018-1CSXRC Disassembly

Outdoor Unit BMS500-AAM027 Series Disassembly

Outdoor Unit BMS500-AAM036/048 Series Disassembly