Bosch BMS500-AAS009-1CSXRA User Manual

Bosch Ductless Air Conditioner / Heat Pump Outdoor Unit
Climate 5000 Series
Single Zone (Regular, HyperHeat, Light Commercial) ODU
Service Manual

Bosch BMS500-AAS009-1CSXRA Specifications

General

Brand	Bosch
Model	BMS500-AAS009-1CSXRA
Category	Air Conditioner
Language	English

Summary

1 Key to Symbols and Safety Instructions

1.2 Safety

Safety Warnings and Precautions

Electrical Hazard Warnings

Specific warnings regarding electrical safety during installation and maintenance.

Refrigerant Handling Precautions

Burn Hazard Warnings

4 Installation Details

6 Error Codes

6.1 Error Codes - Wall Mounted Indoor Unit

Lists error codes specific to wall-mounted indoor units.

6.2 Error Codes - 4-Way Cassette Indoor Unit

Lists error codes for 4-way cassette indoor units.

6.3 Error Codes - Ducted Indoor Unit

Lists error codes for ducted indoor units.

6.4 Quick Check by Error Codes

7 Wiring Diagrams

8 Diagnosis & Solution

8.1 EEPROM parameter error (EO/F4)

Troubleshooting steps for EEPROM parameter errors.

8.2 Indoor/outdoor unit's communication (E1)

Troubleshooting for communication errors between units.

8.3 Zero crossing detection error (E2)

Diagnosis for zero crossing detection errors.

8.4 Fan speed has been out of control (E3 / F5)

Troubleshooting fan speed issues.

8.5 Open circuit or short circuit of temperature sensor (E4/E5/F1/F2/F3/P7)

Diagnosing temperature sensor faults.

8.6 Refrigerant Leakage Detection (EC)

How to diagnose and resolve refrigerant leaks.

8.7 Water-level Alarm Malfunction (EE)

Troubleshooting water-level alarm issues.

8.8 Overload current protection (FO)

Diagnosing and resolving overload current protection faults.

8.9 IPM malfunction or IGBT over-strong current protection (PO)

Troubleshooting IPM and IGBT protection errors.

8.10 Over voltage or too low voltage protection (P1)

Diagnosing voltage protection issues.

8.11 High temperature protection of IPM module or compressor top (P2)

Troubleshooting IPM/compressor overheating.

8.12 Inverter compressor drive error (P4)

Diagnosing inverter compressor drive errors.

8.13 Low pressure protection (P6)

8.14 High temperature protection of indoor coil in heating mode (JO)

8.15 High temperature sensed at outdoor coil (J1)

8.16 High temperature sensed at compressor discharge line (J2)

8.17 PFC module protection (J3)

8.18 Communication error between outdoor unit main PCB and IPM control (J4)

8.19 High pressure switch open (J5)

8.20 Low pressure switch open (P6/J6)

8.21 AC Voltage protection (J8)