Bosch BMS500-AAS018-1CSXRC User Manual

Service Manual
Ducted Type (Medium & High Static)
Air Conditioner / Heat Pump
Climate 5000 Series
BTC 769102303 A / 11.2022
WARNING:
 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.
 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.
 Only contact a licensed contractor for repair
or maintenance of this unit.

Bosch BMS500-AAS018-1CSXRC Specifications

General

Brand	Bosch
Model	BMS500-AAS018-1CSXRC
Category	Air Conditioner
Language	English

Summary

Key to Symbols and Safety Instructions

Safety Precautions

Details crucial safety measures for installation, operation, and maintenance.

Installation Details

Torque Requirements

Specifies torque values for various connections during installation.

Connecting the Cables

Pipe Length and Elevation Limits

First Time Installation Procedures

Re-Installation / Indoor Unit Repair

Re-Installation / Outdoor Unit Repair

Electronic Functions

Main Protection Features

Operation Modes and Functions

Cooling Mode Operation Rules

Condenser and Evaporator Temperature Protection

Heating Mode Operation Rules

Defrost Mode Operation

Point Check Function (Engineering Troubleshooting)

Details how to enter and use the engineering troubleshooting mode.

Troubleshooting

Safety Warnings for Troubleshooting

Emphasizes electrical hazards and capacitor safety before servicing.

Error Codes - Ducted Indoor Unit

Lists error codes, their causes, and indicator states for indoor units.

Quick Check by Error Codes

Provides a quick reference table for parts replacement based on error codes.

ODU PCB & IPM Information

PCB Layouts for 9K & 12K Regular/Max Performance

PCB Layout for Max Performance Single Zone 18K

PCB Layouts for Other Single Zone Models

Indoor Wiring Diagram

Wiring Diagram for 36K/48K/60K Ducted Units

Outdoor Wiring Diagram

Wiring Diagram for 9K & 12K Single Zone Units

Wiring Diagram for 18K/24K Single Zone Units

Wiring Diagram for 24K/30K/36K Single Zone Units

Wiring Diagram for 36K Light Commercial Units

Wiring Diagram for 48K & 60K Light Commercial Units

Specific Error Code Diagnosis

Provides diagnosis and solutions for EEPROM parameter errors.

Communication Error Diagnosis (EL 01)

Offers diagnosis and solutions for indoor/outdoor unit communication errors.

Zero Crossing Detection Error Diagnosis (EH 02)

Explains diagnosis and solutions for zero crossing detection errors.

Fan Speed Control Error Diagnosis (EH 03/EC 07)

Provides diagnosis and solutions for fan speed control issues.

Temperature Sensor Error Diagnosis (EC 52-EH 61)

Details diagnosis and solutions for temperature sensor open or short circuits.

Refrigerant Leakage Detection Diagnosis (EL OC)

Offers diagnosis and solutions for refrigerant leakage detection errors.

PCB/Display Board Communication Error Diagnosis (EH 06)

Provides diagnosis and solutions for communication errors between PCB and display board.

Overload Current Protection Diagnosis (PC 08)

Explains diagnosis and solutions for overload current protection.

IPM Malfunction/Over-Current Protection Diagnosis (PC 00)

Offers diagnosis and solutions for IPM malfunction or over-current protection.

Over/Under Voltage Protection Diagnosis (PC 01)

Provides diagnosis and solutions for over or under voltage protection.

Compressor/IPM Temperature Protection Diagnosis (PC 02)

Details diagnosis and solutions for compressor or IPM module temperature protection.

Inverter Compressor Drive Error Diagnosis (PC 04)

Explains diagnosis and solutions for inverter compressor drive errors.

Low Pressure Protection Diagnosis (PC 03)

Offers diagnosis and solutions for low pressure protection errors.

Communication Error between Outdoor PCB and IPM (PC 40)

Provides diagnosis and solutions for communication errors between outdoor PCB and IPM.

Main Parts Check

Disassembly Guide

Indoor Unit Disassembly Procedures

Outdoor Unit Panel Plate Identification