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Midea AURORA ONOFF Series User Manual

Midea AURORA ONOFF Series
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AURORA ONOFF SERIES
SM_AB_R410A_ONOFF_AR_CE_NA_1912
SERVICE MANUAL

Table of Contents

Questions and Answers:

Midea AURORA ONOFF Series Specifications

General IconGeneral
BrandMidea
ModelAURORA ONOFF Series
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions

Precautions

General safety measures for preventing injury and damage during operation and maintenance.

Information servicing(For flammable materials)

Safety procedures for working with systems containing flammable refrigerants, including checks and work practices.

Specifications

Model Reference

Lists indoor and outdoor unit models, capacities, and power supply details for identification.

Pipe Length and Drop Height

Specifies connection pipe limits and elevation requirements for optimal performance.

Electrical Wiring Diagrams

Provides wiring schematics for indoor and outdoor units across various models for installation.

Product Features

Display Function

Explains the meaning of various symbols and indicators displayed on the unit's interface.

Safety Features

Details built-in safety mechanisms like compressor delay, fan speed shutoff, and sensor redundancy.

Basic Functions

Describes core operational modes such as Cooling, Heating, Fan-only, and Auto modes.

Optional Functions

Covers supplementary features like 8°C heating, self-clean, follow me, and silence modes.

Maintenance

First Time Installation Check

Procedures for initial system setup, including leak testing and evacuation.

Refrigerant Recharge

Steps for safely adding refrigerant to the system to ensure proper operation.

Re-Installation

Procedures for recovering refrigerant and preparing the system for re-installation.

Indoor Unit Disassembly

Dimension

Provides physical dimensions (W, D, H) for indoor units based on their capacity.

Front Panel

Instructions for safely removing the indoor unit's front panel.

Electrical parts

Procedures for accessing and disconnecting electrical components within the unit.

Evaporator

Steps to remove the evaporator coil from the indoor unit assembly.

Fan motor and fan

Guide for disassembling and removing the fan motor and fan assembly.

Step motor

Instructions for removing the stepping motor that controls the louvers.

Drain Hose

Procedure for disconnecting and removing the condensate drain hose.

Outdoor Unit Disassembly

Outdoor Unit Table

A table listing outdoor unit models, panel types, and PCB board information.

Dimension

Detailed dimensional drawings for various outdoor unit panel plates.

Panel Plate

Procedures for removing front, top, and side panels of the outdoor unit.

Electrical Parts

Instructions for accessing and removing electrical components like PCB boards and wiring.

Fan Assembly

Guide for removing the fan and fan assembly from the outdoor unit.

Fan Motor

Procedure for removing the outdoor unit's fan motor.

Sound blanket

Instructions for removing the sound insulation material from the outdoor unit.

Four-way valve (for heat pump models)

Steps to detach and remove the four-way valve assembly.

Compressor

Detailed procedure for safely removing the compressor unit.

Troubleshooting

Safety Caution

Essential safety warnings and precautions before performing troubleshooting procedures.

General Troubleshooting

Explains indoor unit error codes and provides initial troubleshooting steps.

Complain Record Form

A form for documenting customer complaints and unit failure details.

Information Inquiry

Procedure to access and display unit operational data and sensor readings.

Error Diagnosis and Troubleshooting Without Error Code

Common operational issues and troubleshooting steps when no error code is present.

Quick Maintenance by Error Code

A quick reference table mapping error codes to likely faulty parts for replacement.

Troubleshooting by Error Code

In-depth diagnosis and solutions for specific error codes displayed by the unit.

Check Procedures

Specific procedures for checking critical components like sensors and fan motors.

Appendix

Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K)

Reference table for temperature sensor resistance values at various temperatures.

Temperature Sensor Resistance Value Table for TP (for some units)(°C --K)

Resistance value table for TP temperature sensors used in specific unit models.

Pressure On Service Port

Charts detailing system pressures for cooling and heating modes with different refrigerants.

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