Haier HSU-18LEA03

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Please read this operation manual before using the air conditioner.

SPLIT TYPE ROOM AIR CONDITIONER

OPERATION MANUAL

0010522564

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HSU-18HEA03(T3)

HSU-18LEA13(T3)

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Operating Manual19 pages

Questions and Answers:

J
John GayJul 30, 2025
Why is my Haier HSU-18LEA03 Air Conditioner cooling poorly?
- D
  deborahrushJul 30, 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.
S
Stacy HernandezAug 3, 2025
Why is my Haier HSU-18LEA03 Air Conditioner making noise?
- L
  Lawrence HendrixAug 4, 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.
R
Renee DiazAug 9, 2025
How to stop my Haier Air Conditioner from generating smells?
- M
  Mr. Louis Howell Jr.Aug 9, 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.
J
Jessica BarrettAug 14, 2025
What to do if my Haier Air Conditioner does not restart immediately?
- D
  davidcampbellAug 14, 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.
A
Aaron RomanAug 19, 2025
Why is my Haier Air Conditioner blowing out mist or steam?
- S
  shahchelseaSep 12, 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.
C
Charles GrayAug 25, 2025
Why can't I change the fan speed in dry mode on my Haier Air Conditioner?
- R
  Robert MitchellAug 25, 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-18LEA03 Specifications

General

Brand	Haier
Model	HSU-18LEA03
Category	Air Conditioner
Language	English

Summary

Cautions

Safety Instructions and Warnings

Cautions and Safety

Installation Safety Guidelines

Covers warnings and cautions related to the proper installation of the unit.

Operational Safety

General Warnings

Lists critical warnings regarding electrical safety, operation, and repair.

General Cautions

Provides cautions on usage, placement, and interaction with the unit.

Operating Modes

Basic Operation Steps

Covers starting, stopping, selecting modes, temperature, and fan speed.

Air Flow Direction Control

HEALTH Function Operation

Activating Health Anion Function

How to start and use the health anion feature and its benefits.

TIMER Operation Guide

Setting Timer ONOFF

Instructions for setting the timer to turn the unit on or off automatically.

TIMER ON-OFF Operation

Setting Specific Timer Times

Detailed steps for setting ON and OFF times for the timer.

Comfortable SLEEP Mode

Using the SLEEP Function

How to activate and use the sleep mode for comfort.

Emergency and Test Operations

Emergency Operation

How to operate the unit when the remote controller is lost or defective.

Test Operation

Procedure for performing a test operation, especially in low temperatures.

Unit Cleaning and Maintenance

Air Filter Cleaning Steps

Step-by-step guide for removing, cleaning, and reattaching the air filter.

Troubleshooting Common Issues

Poor Cooling and Checkpoints

Lists causes and checks for poor cooling performance.

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