Bosch AHUW036A2 User Manual

Service guide
230 V 1 N~/400 V 3 N~
Split Outdoor unit
6 720 813 707-00.2I
ODU Split 2
ODU Split 4...8
ODU Split 11t...15t
ODU Split 11s...15s
6 720 817 722 (2015/06)

Bosch AHUW036A2 Specifications

General

Brand	Bosch
Model	AHUW036A2
Category	Air Conditioner
Language	English

Summary

Key to Symbols and Safety Instructions

Error Handling Instructions for Split Outdoor Unit

Error Code 21: DC Peak (IPM Fault)

Details error code 21, including causes, check points, and countermeasures.

Error Code 22: Max C/T - Input Over Current

Details error code 22, including causes, check points, and countermeasures.

Error Code 23: DC Link High/Low Voltage

Details error code 23, including causes, check points, and countermeasures.

Error Code 26: DC Compressor Starting Failure

Details error code 26, including causes, check points, and countermeasures.

Error Code 27: DC Compressor Starting Failure

Details error code 27, including causes, check points, and countermeasures.

Error Code 29: Inverter Compressor Over Current

Details error code 29, including causes, check points, and countermeasures.

Error Code 32: High Temperature in Discharge Pipe

Error Code 35: Low Pressure Error

Error Codes 41, 44, 45, 46, 48: Sensor Errors

Error Code 43: High Pressure Sensor Error

Error Codes 52, 53: Communication Errors

Error Code 54: Open and Reverse Phase Error

Error Code 60: EEPROM Check Sum Error

Error Code 61: High Temperature in Condenser Pipe

Error Codes 62, 65: Heat Sink Temperature/Sensor

Error Code 67: Fan Lock Error

Check Compressor Resistances

Compressor Replacement

Electronic Expansion Valve (EEV)

Replacement Procedure for INV PCB