Haier HSU-12LXA03 User Manual

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Please read this operation manual before using the air conditioner.

Keep this operation manual for future reference.

SPLIT TYPE ROOM AIR CONDITIONER

OPERATION MANUAL

0010560207

Contents

1

2-4

5

7

6.7

CAUTIONS

PARTS AND FUNCTIONS

OPERATION

MAINTENANCE

TROUBLE SHOOTING

HSU-18LXA03(T3)

AS24ZE1LAA

AS24ZE2LAA

AS24ZE1HAA

HSU-18HXA03(T3)

HST-24LXA13(T3)

HST-24HXA13(T3)

HST-18LXA13(T3)

HST-18HXA13(T3)

HSU-18HXA03

HSU-18LXA03

HSU-12HXA03

HSU-12LXA03

HSU-09HXA03

HSU-09LXA03

HSU-12LZE14

HSU-18LZE14

HSU-09LZE14

AS09ZB1LAA

AS12ZB1HRA

AS09ZB1HRA

AS18ZD3HAA

HSU-18HXAR(R2DB)

HSU-18HZE/R2(DB)-DC inverter

HSU-12HZE/R2(DB)-DC inverter

HSU-09LXA03-Y3HSU-18LXA13(T3)

HSU-18HXA13(T3)

HSU-19CXAG3

HSU-19CXAR5

HSU-19CXAS3

HSU-19CXBW3

HSU-13CXAG3

HSU-13CXAR5

HSU-13CXAS3

HSU-13CXBW3

Table of Contents

Other manuals for Haier HSU-12LXA03

Operating Manual19 pages

Questions and Answers:

P
Patricia SolomonAug 6, 2025
Why is my Haier Air Conditioner not cooling well?
- J
  Jennifer EricksonAug 6, 2025
  Several factors can cause poor cooling in your Haier Air Conditioner. A dirty air filter, which should be cleaned every 15 days, can restrict airflow. Obstacles blocking the inlet and outlet will also reduce cooling efficiency, so remove any obstructions. Ensure the temperature is set correctly and that all doors and windows are closed. Direct sunlight can also impact cooling, so use curtains to block it. Finally, too many heat sources or people in the room can overwhelm the unit's cooling capacity; try to reduce these.
A
Anthony WalkerAug 10, 2025
How to restart Haier HSU-12LXA03 Air Conditioner immediately?
- J
  jeremy09Aug 11, 2025
  When your Haier Air Conditioner is stopped, it won't restart immediately. This is to protect the system and requires waiting for 3 minutes before attempting to restart the unit.
J
James AliAug 16, 2025
Why can't I change the fan speed in dry mode on my Haier HSU-12LXA03?
- J
  Jordan YoungAug 16, 2025
  In DRY mode, when the room temperature is lower than the temperature setting +2°C, your Haier Air Conditioner will run intermittently at LOW speed regardless of the FAN setting. This is a normal function.
D
Desiree MartinAug 20, 2025
Why is my Haier HSU-12LXA03 making noise?
- M
  Marcus SmithAug 21, 2025
  Various noises can be normal for your Haier Air Conditioner. A swishing or gurgling sound is often the refrigerant flowing through the system, especially noticeable in the first few minutes after starting. A cracking noise can occur as the casing expands or shrinks due to temperature changes. However, a big noise from airflow may indicate a dirty air filter, which should be checked and cleaned.
C
Christine RiveraAug 26, 2025
Why does my Haier Air Conditioner smell?
- M
  Monica RaymondAug 26, 2025
  Your Haier Air Conditioner might circulate odors from interior sources like furniture, paint, or cigarettes. To address this, consider improving air circulation or using air fresheners.
A
Amy HarrisAug 31, 2025
What to do if my Haier HSU-12LXA03 Air Conditioner blows mist?
- M
  Molly MendezAug 31, 2025
  During COOL or DRY operation, your Haier Air Conditioner may blow out mist due to the sudden cooling of indoor air. This is a normal occurrence.

Haier HSU-12LXA03 Specifications

General

Cooling Capacity	12000 BTU/h
Power Consumption (Cooling)	1100 W
Refrigerant	R410A
Weight (Indoor Unit)	8.5 kg
Weight (Outdoor Unit)	23 kg
Power Supply	220-240V, 50Hz
Type	Split
Capacity	12000 BTU/h
Power Consumption	1100 W
Features	Auto Restart, Sleep Mode
Operating Temperature (Cooling)	18°C to 43°C

Summary

Parts and Functions

Indoor Unit Components

Details on the components and indicators of the indoor unit.

Remote Controller Overview

Explanation of remote controller buttons, displays, and functions.

Operation

Unit Start/Stop and Temperature Setting

Instructions for operating the unit and adjusting temperature.

Fan Function and Air Flow Direction

Adjusting fan speed and controlling air direction.

Timer On/Off Operation

Setting on/off timers for automated operation.

Special Operation Modes

Utilizing TURBO, QUIET, and HEALTH operation modes.

Emergency and Test Operation

Using the emergency switch for operation or testing.

Comfortable Sleep Mode

Activating sleep mode for a comfortable sleeping environment.

Healthy Airflow Operation

Customizing airflow for health and comfort.

Maintenance

Unit and Remote Controller Care

Guidelines for cleaning the indoor unit and remote controller.

Air Filter Maintenance

Instructions for cleaning and replacing air filters.

Cautions

Critical Warnings

Essential safety warnings covering installation, electricity, and abnormalities.

General Cautions

Precautions for usage, placement, and environmental factors.

Trouble Shooting

Normal Performance Issues

Troubleshooting common issues like restart delays, noise, smells, and mist.

Operational Checks for Cooling

Checking power, filters, and environment for cooling problems.

Ambient Temperature Guidelines

Recommended ambient temperature ranges for operation.

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