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Bosch BMS500-AAM036-1CSXHC User Manual

Bosch BMS500-AAM036-1CSXHC
104 pages
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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.

Table of Contents

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Bosch BMS500-AAM036-1CSXHC Specifications

General IconGeneral
BrandBosch
ModelBMS500-AAM036-1CSXHC
CategoryAir Conditioner
LanguageEnglish

Summary

Service Manual Overview

Safety Precautions

Covers critical safety warnings and precautions for operating and installing the unit.

Technical Specifications and Procedures

Models, Dimensions, Diagrams, Installation, Troubleshooting

Covers model identification, dimensions, refrigerant cycles, wiring, installation, and troubleshooting.

Safety Instructions

General Safety Precautions

Provides essential safety guidelines for installation and operation.

Hazard Warnings

Electrical and Fire Hazards

Details warnings related to electrical hazards and potential fire risks.

Refrigerant Charging

Adding Refrigerant to Existing System

Procedure for adding refrigerant to an existing system.

Refrigerant Management

Collecting and Evacuating Refrigerant

Instructions for collecting and evacuating refrigerant.

Protection Mechanisms

Compressor Protection Details

Details protection mechanisms for compressor discharge and current.

Frequency Adjustment

Temperature-Based Frequency Control

Adjusts running frequency based on ambient and coil temperatures.

Defrost and Fan Control

Defrost Operation

Details defrost control conditions and actions.

Electronic Expansion Valve (EXV)

48K Max Performance System Operation

Details EXV operation for 48K max performance systems.

EXV and System Control

EXV Operation Modes

Describes EXV control in cooling and heating modes.

Point Check Function

Engineering Troubleshooting Mode

Explains the point check function for troubleshooting.

Troubleshooting

Electrical Hazard Safety

Safety warnings related to electrical hazards during troubleshooting.

Outdoor Unit Error Codes

Error Code Descriptions

Lists and explains various outdoor unit error codes.

Troubleshooting by Error Code

Error Code Correlation

Provides a quick check guide correlating errors to potential causes.

PCB and IPM Information

18K Regular PCB Layout

Diagram and layout for the 18K regular outdoor unit PCB.

PCB and IPM Information (Continued)

27K and 36K PCB Layouts

Diagrams for 27K and 36K outdoor unit PCB layouts.

PCB Connector and Meaning Table

Details PCB connectors and their meanings.

IPM Module Information

IPM Module Connections

Illustrates IPM module connections.

IPM Module Information (Continued)

48K and 36K/48K PCB Layouts

PCB layouts for 48K and 36K/48K models.

IPM Module Connector Table

Table detailing IPM module connectors.

IPM Module Connections (48K Models)

Shows IPM module connections specific to 48K models.

Outdoor Unit Display

Point Check Function

Explains the outdoor unit point check function.

Outdoor Unit Display (Continued)

Point Check Function Details

Details the output of the point check function.

Point Check Function Details (M2OA Models)

Details point check outputs for M2OA models.

Outdoor Unit Digital Display

LED Display Codes

Lists and explains LED display codes for various unit statuses.

Diagnosis and Solution

EEPROM Parameter Error (EC 51)

Diagnoses and provides solutions for EEPROM parameter errors.

Troubleshooting: Communication Errors

Indoor/Outdoor Communication Error (EL 01)

Troubleshooting steps for indoor/outdoor communication errors.

Troubleshooting: IPM Communication Error

Troubleshooting: Sensor Malfunctions

Troubleshooting: Voltage Protection

Troubleshooting: PFC Module Protection

Troubleshooting: Fan Motor Issues

Troubleshooting: Pressure Protection

Troubleshooting: Pressure Protection (Continued)

Troubleshooting: Overload and Speed Protection

Troubleshooting: Compressor Protection

Troubleshooting: Condenser Protection

Troubleshooting: Inverter Module Malfunction

Troubleshooting: Compressor Top Temperature Protection

Troubleshooting: Fan Motor Failure

Troubleshooting: Compressor and Drive Failures

Troubleshooting: Communication Malfunctions

Disassembly Guide

Disassembly Guide (Continued)

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