Haier HSU-09LEK03-Y3 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

0010518786

Contents

1

2-4

5

7

6.7

CAUTIONS

PARTS AND FUNCTIONS

OPERATION

MAINTENANCE

TROUBLE SHOOTING

HSU-09HEK03

HSU-09LEK03

HSU-12HEK03

HSU-12LEK03

HSU-09LEK13

HSU-12LEK13

HSU-07LEK03

HSU-07HEK03

HSU-18LEK13

HSU-24LEK13

HSU-12LEK13-M

HSU-18HEK03

HSU-24HEK03

HSU-18LK2S3

HSU-12LEK03-Y3

HSU-24LK2S3

HSU-18LEK03-Y3

HSU-24LEK03-Y2

HSU-09CK2S3

HSU-09LEK03-Y3

HSU-12CK2S3

HSU-09CK2W3

HSU-09CK6B3

HSU-12CK2W3

HSU-12CK6B3

HSU-18LK2W3

HSU-18LK6B3

SAS-09HEK3

SAS-12HEK3

SAS-18HEK3

SAS-24HEK3

HSU-12LEK03-Y5

HSU-09LEK03-Y5

HSU-12LH03

HSU-09LH03

HSU-18LEK03-Y5

HSU-18LH03

HSU-24LEK03-Y5

HSU-24LH03

HSU-12HH03

HSU-09HH03

HSU-18HH03

HSU-24HH03

HSU-12HEG03

HSU-09HEG03

HSU-18HEG03

HSU-24HEG03

HSU-12LEK03-Y6

HSU-18LEK03-Y6

HSU-12LEK03-Y2

HSU-24LEK03-Y3

HSU-09LEK03-Y2

HSU-18LEK03-Y2

YKS-18HEK03

YKS-24HEK03

HSU-18LEK03

HSU-24LEK03-Y6

HSU-12LEK03-Y4

HSU-18LEK03-Y4

HSU-24LEK03-Y4

HSU-09LEK03-Y4

HSU-09LEK03-Y6

HSU-18LK2W3

HSU-18LK6B2

HSU-24LK2S2

HSU-12CK6B2

HSU-24LEK03

HSU-18LEK03EK1

HSU-26HEK03

Table of Contents

Other manuals for Haier HSU-09LEK03-Y3

Installation Manual4 pages

Questions and Answers:

M
Mr. Robert AnthonyAug 14, 2025
Why is my Haier Air Conditioner cooling poorly?
- E
  Elizabeth WilsonAug 14, 2025
  Poor cooling in your Haier Air Conditioner can stem from several factors. First, check if the air filter is dirty and clean it, ideally 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 tightly. Direct sunlight can also impact cooling efficiency, so use curtains to block it. Finally, consider if there are excessive heat sources or too many people in the room.
L
lrichardsonAug 17, 2025
Why is my Haier HSU-09LEK03-Y3 Air Conditioner not cooling well?
- H
  Henry MyersAug 18, 2025
  There are several reasons why your Haier Air Conditioner might not be cooling effectively. Check if the air filter is dirty and clean it, normally it should be cleaned every 15 days. Ensure there are no obstacles blocking the air inlet and outlet. Verify that the temperature is set correctly. Make sure all doors and windows are closed. Use curtains to block direct sunlight. Reduce heat sources or the number of people in the room.
M
Melinda JamesAug 21, 2025
How to fix Haier Air Conditioner not restarting immediately?
- J
  Jeffrey BeasleyAug 21, 2025
  When the unit is stopped, it won't restart immediately until 3 minutes have elapsed to protect the system. When the electric plug is pulled out and reinserted, the protection circuit will work for 3 minutes to protect the air conditioner.
J
jason59Aug 25, 2025
Why is my Haier Air Conditioner making noise?
- D
  Donna BauerAug 25, 2025
  The swishing or gurgling noise you hear in your Haier Air Conditioner is typically refrigerant flowing through the system. You might notice it more within the first few minutes after starting the unit. Also, cracking noises can occur as the unit's casing expands or shrinks due to temperature fluctuations. If you notice a big noise from air flow, the air filter may be too dirty.
L
lorimorenoAug 27, 2025
Why won't my Haier HSU-09LEK03-Y3 restart immediately?
- A
  Aaron WhitakerAug 27, 2025
  If your Haier Air Conditioner doesn't restart immediately after being stopped, it's due to a built-in protection mechanism. The system requires a 3-minute delay before restarting to safeguard the unit. If you unplug and re-plug the air conditioner, this protection circuit activates, preventing immediate restart for about 3 minutes.
T
Tristan ChristianAug 31, 2025
Why does my Haier HSU-09LEK03-Y3 Air Conditioner generate smells?
- U
  ufowlerAug 31, 2025
  Smells from your Haier Air Conditioner can occur when the system circulates odors from the room, such as those from furniture, paint, or cigarettes.
L
lisa24Sep 3, 2025
Why can’t I change the fan speed in dry mode on my Haier HSU-09LEK03-Y3 Air Conditioner?
- T
  Tracy ButlerSep 3, 2025
  In DRY mode, the fan speed of your Haier Air Conditioner cannot be changed because when the room temperature drops below the set temperature plus 2 degrees Celsius, the unit will run intermittently at low speed, regardless of the fan setting.
J
Joanna Powell DDSSep 6, 2025
Why does my Haier HSU-09LEK03-Y3 make noise?
- C
  Christopher DaySep 6, 2025
  During operation, a swishing or gurgling noise may be heard, especially in the first 2-3 minutes after starting, due to refrigerant flowing in the system. A cracking noise may occur because the casing expands or shrinks due to temperature changes. If there's a big noise from air flow, the air filter may be too dirty.
G
Gary OwensSep 10, 2025
Why can't I change the fan speed in dry mode on my Haier Air Conditioner?
- E
  Erika NicholsonSep 10, 2025
  In DRY mode, when the room temperature becomes lower than the set temperature plus 2 degrees Celsius, the unit will run intermittently at LOW speed regardless of the FAN setting.

Haier HSU-09LEK03-Y3 Specifications

General

Type	Split
Cooling Capacity	9000 BTU/h
Energy Efficiency Ratio (EER)	3.21
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Outdoor Noise Level	52 dB(A)
Air Flow (High)	500 m³/h
Net Weight (Indoor Unit)	8 kg
Indoor Noise Level	36 dB(A)
Operating Temperature (Cooling)	18°C to 43°C

Summary

Parts and Functions Overview

Indoor Unit Components

Identifies key parts of the indoor air conditioner unit.

Remote Controller Diagram

Illustrates and labels buttons and displays on the remote control.

Outdoor Unit Components

Details the main parts of the outdoor unit of the air conditioner.

Clock Setting Procedure

Explains how to set the clock on the remote controller.

Battery Loading Instructions

Provides steps for inserting batteries into the remote controller.

Operation Modes and Features

Unit Start and Stop

Instructions on how to turn the air conditioner on and off.

Auto Operation Explained

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

Cooling Operation

Details on using the air conditioner for cooling.

Dry Operation Mode

Information on the dehumidification mode of the air conditioner.

Fan Only Operation

How to use the unit for air circulation without cooling or heating.

Heating Operation

Instructions for operating the air conditioner in heating mode.

Airflow Direction Adjustment

How to control the direction of the air flow from the unit.

Advanced Operation Features

Health Mode Operation

Explains the anion generator function for air purification.

Timer Operation Setup

Guide to setting automatic start and stop times for the unit.

Emergency and Test Operations

How to operate the unit manually or for testing purposes.

Sleep and Power Functions

Comfortable Sleep Mode

How to use the sleep mode for a comfortable night's rest.

Sleep Mode Operation Details

Describes sleep mode behavior in different operating modes (COOL, DRY, HEAT, AUTO).

Power Failure Resume Function

How the unit behaves after a power interruption.

Maintenance Guide

General Maintenance Tips

Covers cleaning the remote, indoor unit, and forbidden cleaning materials.

Air Filter Cleaning and Replacement

Instructions for cleaning and replacing standard and air purifying filters.

Standard Air Filter Attachment

Steps for correctly attaching the standard air filter.

Safety Cautions

Installation Warnings

Critical warnings regarding the installation process and self-installation.

Operational Safety Precautions

Essential safety guidelines to follow during unit operation.

Prohibited Actions

Actions that must be avoided to prevent damage or hazards.

Troubleshooting and Cautions

Normal Operation Checks

Explains normal operating sounds and behaviors of the unit.

Common Issue Diagnosis

Lists potential problems and their causes for user diagnosis.

Operational Environment Cautions

Details applicable ambient temperature ranges and other environmental considerations.

Installation and Usage Safety

Safety notes on supply cords, batteries, installation support, and user supervision.

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