Haier HSU-12LEA03 - 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

0010522564

HSU-18HEA13(T3)

HSU-18HEA03(T3)

HSU-12HEB03

YKS-09HEA03

YKS-12HEA03

YKS-18HEA03

HSU-12LEA03

HSU-18LEA03

HSU-22LEA03

HSU-24LEA03

HSU-09LEA03

HSU-07LEA03

HSU-05LEA03

HSU-12LEA03-W

HSU-18LEA03-W

HSU-22LEA03-W

HSU-13LEA03-T

HSU-10LEA03-T

HSU-09LEA03-W

HSU-09LEB13-H

HSU-12LEB13-H

HSU-14LEB13-H

HSU-12LEA13-H

HSU-18LEA13-H

HSU-12LEA13-F

HSU-12LEA13-M

HSU-09LEA13-F

HSU-14LEA13-H

HSU-09LEA13-H

HSU-18LEA13-M

HSU-07HEA03

HSU-09HEA03

HSU-24HEA03

AMS09H03-N

HSU-22HEA03

HSU-18HEA03

HSU-12HEA03

AMS12H03-N

AMS18H03-N

AMS22H03-N

HSU-18HEA03(T3)

HSU-18HEA13(T3)

HSU-12HEA03/(BP)

HSU-09HEA03/(BP)

PAS18L03-N(T3)

HSU-12HEA03/(DB)

HSU-09HEA03/(DB)

HSU-09CRA03-T

HSU-12CRA03-T

HSU-18CRA03-T

Contents

1

2-4

5

7

6.7

CAUTIONS

PARTS AND FUNCTIONS

OPERATION

MAINTENANCE

TROUBLE SHOOTING

HSU-18LEA03(T3)

HSU-18LEA13(T3)

HSU-09LEA03-N

HSU-10LED03-T

HSU-13LED03-T

HSU-18LED03-T

Questions and Answers:

J
Jamie WhiteAug 6, 2025
Why is my Haier HSU-12LEA03 cooling poorly?
- E
  Edward SaundersAug 6, 2025
  Poor cooling in your Haier Air Conditioner can stem from several factors. Check if the air filter is dirty and clean it if needed, as it should be cleaned every 15 days. Ensure there are no obstructions blocking the air inlet or outlet. Verify that the temperature is set correctly and that all doors and windows are closed. If direct sunlight is entering the room, use curtains to block it. Finally, reduce the number of heat sources and people in the room.
C
Christina WilkersonAug 10, 2025
Why is my Haier Air Conditioner making noise?
- J
  Jermaine DavisAug 10, 2025
  Your Haier Air Conditioner may produce noise for several reasons. A swishing or gurgling sound, especially noticeable in the first few minutes of operation, is normal due to refrigerant flow. A cracking noise during operation is also normal, caused by the casing expanding or shrinking with temperature changes. However, a big noise from airflow could indicate a dirty air filter, which needs to be checked and cleaned.
B
Brandon Welch MDAug 15, 2025
How to stop my Haier Air Conditioner from generating smells?
- K
  Kristi TuckerAug 15, 2025
  The Haier Air Conditioner might be circulating smells from the room's interior, such as furniture, paint, or cigarettes. To address this, ensure proper ventilation and try to reduce the sources of the odor in the room.
C
Carolyn WeaverAug 20, 2025
What to do if my Haier Air Conditioner does not restart immediately?
- B
  Brandon HoldenAug 20, 2025
  If your Haier Air Conditioner doesn't restart immediately after being stopped, this is normal. The unit has a built-in protection feature that delays restarting for 3 minutes to protect the system. If the electric plug is pulled out and reinserted, this protection circuit will also activate for 3 minutes. Wait for 3 minutes before attempting to restart the unit.
B
Blake EdwardsAug 26, 2025
Why is my Haier HSU-12LEA03 blowing out mist or steam?
- M
  melanieodomAug 26, 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 phenomenon during operation, so no action is required.
M
Michael SnowAug 30, 2025
Why can't I change the fan speed in dry mode on my Haier HSU-12LEA03?
- S
  Shirley AlexanderAug 31, 2025
  In DRY mode, when the room temperature becomes lower than the temperature setting +2°C, the Haier Air Conditioner will run intermittently at LOW speed, regardless of the fan setting. This is normal operation for the unit in DRY mode, and no action is required.

Haier HSU-12LEA03 Specifications

General

Brand	Haier
Model	HSU-12LEA03
Category	Air Conditioner
Language	English

Summary

Air Conditioner Parts and Functions

Indoor Unit Components

Details components of the indoor unit, including inlets, filters, and flaps.

Remote Controller Overview

Identifies buttons and functions of the remote control for operating the unit.

Display Board Indicators

Explains the indicators and symbols shown on the air conditioner's display board.

Clock Setting

Instructions on how to set the current time on the air conditioner's clock.

Operating the Air Conditioner

Unit Start and Stop

Basic procedure for turning the air conditioner unit on and off.

Auto Operation Mode

How the unit automatically selects cooling or heating based on room temperature.

Cool and Dry Operation Modes

Details on operating the air conditioner in cooling and dehumidification modes.

Heat and Fan Operation Modes

Information on heating mode and using the unit for air circulation only.

Advanced Operation Functions

Health Operation

Details on the anion generator's function for air purification.

Power and Soft Operation

Using power mode for rapid cooling/heating and soft mode for quiet operation.

Timer Operation

Instructions for setting automatic start and stop times for the unit.

Emergency and Test Operation

How to operate the unit manually when the remote is lost or for testing.

Comfortable Sleep and Power Management

Sleep Operation

How the unit adjusts temperature and operation for comfortable sleep.

Power Failure Resume

Explanation of how the unit resumes operation after a power interruption.

Maintenance and Cleaning

General Maintenance Tips

Guidance on setting temperature, cleaning the remote, and indoor body.

Air Filter Replacement

Step-by-step instructions for replacing or cleaning air purifying filters.

Safety Cautions and Warnings

Installation and Electrical Safety

Warnings regarding installation, power supply, and avoiding electric shock.

Operational Safety Precautions

Cautions on proper usage, avoiding damage, and environmental considerations.

Troubleshooting Common Issues

Normal Performance Checks

Checks for issues like system not restarting, noise, smells, or mist.

Poor Cooling Diagnosis

Troubleshooting steps for insufficient cooling, including filter and obstacles.

Applicable Ambient Temperatures

Temperature ranges for optimal operation of the air conditioner.

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