Air-Con ABXEM4H4S12 - User Manual

Questions and Answers

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Edward CallahanAug 6, 2025
What to do if there is a communication failure between indoor and outdoor unit on my Air-Con Air Conditioner?
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  Cassidy MataAug 6, 2025
  If you are experiencing a communication failure between the indoor and outdoor units of your Air-Con Air Conditioner, here are a few things to check: * Ensure the communication cable is securely connected. * Verify the communication cable is not damaged. * Check the connection between the filter board and the outdoor control board, ensuring it's correct and secure. * Also, check the connection between the filter board and the terminal, making sure it is correct and secure. Additionally, the indoor control board, PFC board, power board, or outdoor control board might have failed.
C
Charles HicksAug 10, 2025
Why does my Air-Con Air Conditioner have current overload protection?
- G
  glaneAug 10, 2025
  If your Air-Con Air Conditioner is experiencing current overload protection issues, consider the following: * Check if the fan motor is running abnormally. * Inspect the condenser and evaporator for dirt and clean if necessary. * Ensure that the air inlet and outlet are not obstructed.
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lunderwoodAug 14, 2025
What causes maximum current protection in Air-Con Air Conditioner?
- M
  Michelle TaylorAug 14, 2025
  If your Air-Con Air Conditioner is experiencing maximum current protection activation, it could be due to a short circuit. Specifically, check if the outdoor control board, the drive board, or other components are short-circuited.
J
Joseph OrrAug 19, 2025
How to troubleshoot compressor exhaust temperature sensor issues in Air-Con Air Conditioner?
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  Laura Lin DVMAug 19, 2025
  If the compressor exhaust temperature sensor is malfunctioning in your Air-Con Air Conditioner, consider the following potential solutions: * Check the connection of the compressor exhaust temperature sensor to ensure it is not loose. * The compressor exhaust temperature sensor might be faulty and need replacement. * The outdoor control board could be failing.
P
Patricia RosalesAug 23, 2025
What causes outdoor coil temperature sensor issues in Air-Con Air Conditioner?
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  nathan12Aug 23, 2025
  If the outdoor coil temperature sensor is malfunctioning in your Air-Con Air Conditioner, consider the following potential solutions: * Check the connection of the outdoor coil sensor to ensure it is not loose. * The outdoor coil temperature sensor might be faulty and need replacement. * The outdoor control board could be failing.
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Lacey McdonaldAug 27, 2025
How to fix communication trouble between outdoor unit and driver in Air-Con Air Conditioner?
- A
  Aaron WashingtonAug 27, 2025
  If you're having communication issues between the outdoor unit and the driver in your Air-Con Air Conditioner: * Make sure the connection wires are securely connected. * The outdoor board or drive board might be faulty.
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Ryan SharpAug 31, 2025
What to do if the outdoor EEPROM is in trouble on my Air-Con Air Conditioner?
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  Joshua RodriguezAug 31, 2025
  If your Air-Con Air Conditioner is showing that the outdoor EEPROM is in trouble, here are some things to check: * Ensure the EEPROM chip is not loose. * Verify the EEPROM chip is inserted in the correct direction. * The EEPROM chip itself may be faulty.

Summary

Safety Considerations

General Safety & Handling

Electrical Safety Precautions

Details electrical hazards, warnings, and requirements for qualified electricians during wiring.

Installation & Servicing Safety

Installation Instructions

General Placement Guidelines

Outdoor Unit Installation Requirements

Electric Wiring Diagrams

Indoor Unit Wiring Diagram

Schematic diagram detailing the electrical connections and components for the indoor unit.

Outdoor Unit Wiring Diagram

Schematic diagram detailing the electrical connections and control board for the outdoor unit.

Refrigerant Flow System

Cooling Mode Refrigerant Flow

Cooling and Heating Mode Refrigerant Flow

Air Purging and Leakage Test

Remote Controller Functions

Remote Controller Interface and Symbols

Explains the function of each button and the meaning of symbols on the remote controller.

General Remote Controller Operations

Electrical Characteristics

Print Circuit Board Identification

Outdoor Unit PCB Details

Outdoor PCB Terminal Identification

Identifies and lists the function of each terminal on the outdoor unit's PCB.

Compressor Troubleshooting

Compressor Resistance Testing

Inverter Compressor Terminal Identification

Room Card, Fire Protection, and ON;OFF Functions

Function Introduction and Settings

EE Settings and Operations

Troubleshooting

Outdoor Unit Error Code Table

Lists error codes, descriptions, LED indications, and potential root causes for outdoor unit faults.

Indoor Unit Error Indications

Indoor Unit 7-Segment Display Errors

Explains error codes displayed on the indoor unit's 7-segment tube and their causes.

Indoor Unit LED Error Display

Describes how to check specific error codes using the sleep button on the remote controller.

Protection Troubleshooting

AC Input Voltage Protection

Diagnosing and resolving issues related to AC input over-voltage and under-voltage protection.

Over-Current Protection

Diagnosing and resolving issues related to over-current protection and its actions.

Electric Communication Troubleshooting

Communication Wiring and Connection Checks

Steps to verify wiring correctness, connection tightness, and communication signal voltage.

System Diagnosis Flowcharts

DC Fan Troubleshooting Flowchart

Flowchart for diagnosing DC fan motor issues, including checks and component replacements.

Compressor Winding and Control Board Diagnosis

Flowchart for diagnosing compressor faults and control board issues based on error code 9.

Compressor Overheat and Overload Protection Diagnosis

Flowcharts for diagnosing compressor overheating (Error 13) and current overload (Error 8).

Cooling and Heating Protection Flowcharts

Flowcharts for diagnosing anti-freeze (Error 16), outdoor coil overload (Error 21), and EEPROM issues (Error 11).

Outdoor Fan Motor Locked Rotor Protection Diagnosis

Flowchart for diagnosing outdoor fan motor issues (Error 20) and related components.

Sensor and Voltage Protection Diagnosis

Flowcharts for diagnosing sensor faults (Error 33, 34, 14, 1, 2) and voltage issues (Error 6).

Compressor Drive Troubleshooting

IPM Fastening and Compressor Wiring Diagnosis

Compressor and Communication Diagnosis

Compressor Resistance and SI;N Voltage Tests

Air-Con ABXEM4H4S12 Specifications

General

Cooling Capacity	12000 BTU/h
Power Supply	220-240V, 50Hz
Power Consumption	1100W
Energy Efficiency Ratio (EER)	3.2
Net Weight (Indoor Unit)	9 kg
Operating Temperature (Cooling)	18°C to 43°C