Haier HSU-12LEK03-Y2 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-12LEK03-Y2

Installation Manual4 pages

Service Manual72 pages

Questions and Answers:

J
Jacob TaylorJul 30, 2025
Why is my Haier Air Conditioner cooling poorly?
- S
  Samantha HillJul 31, 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.
G
griffinaaronAug 5, 2025
Why is my Haier Air Conditioner making noise?
- A
  angeldeanAug 5, 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.
T
Thomas LeeAug 11, 2025
Why won't my Haier HSU-12LEK03-Y2 Air Conditioner restart immediately?
- T
  Thomas AguilarAug 11, 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.
J
Julian ClarkeAug 18, 2025
Why does my Haier Air Conditioner generate smells?
- C
  Christopher HillAug 18, 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.
J
John LynchAug 25, 2025
Why can’t I change the fan speed in dry mode on my Haier Air Conditioner?
- R
  Richard MaddoxAug 25, 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.

Haier HSU-12LEK03-Y2 Specifications

General

Power Supply	220-240V, 50Hz
Refrigerant	R410A
Net Weight (Indoor Unit)	9 kg
Type	Split
Cooling Capacity	12000 BTU/h
Operating Temperature (Cooling)	18°C to 43°C

Summary

Parts and Functions

Indoor Unit Components

Identifies and explains the parts of the indoor air conditioner unit.

Remote Controller Functions

Details the buttons and display elements of the remote control.

Operation Modes

Advanced Operation Features

Health Operation and Anion

Using the anion generator for air purification and health benefits.

Timer Operation Settings

Programming automatic start and stop times for the unit.

Safety Cautions and Warnings

Critical Safety Warnings

Essential safety precautions for installation, operation, and electrical safety.

Operational Precautions

Guidelines for safe usage, placement, and environmental considerations.

Troubleshooting Guide

Normal Performance Checks

Common Issue Checklist

Troubleshooting steps for poor cooling, fan speed, and other system issues.

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