Haier HSU-12CK2S3 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-12CK2S3

Installation Manual4 pages

Questions and Answers:

S
Steve BarkerAug 8, 2025
Why is my Haier Air Conditioner cooling poorly?
- N
  Nicholas SharpAug 8, 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.
P
Pamela BeasleyAug 14, 2025
Why is my Haier HSU-12CK2S3 Air Conditioner making noise?
- L
  Lisa ReynoldsAug 14, 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.
M
Michael RodriguezAug 19, 2025
Why won't my Haier Air Conditioner restart immediately?
- S
  susansmithAug 19, 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.
S
Samuel MannAug 26, 2025
Why does my Haier Air Conditioner generate smells?
- M
  Molly WilsonAug 26, 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.
A
Anthony StephensAug 31, 2025
Why can’t I change the fan speed in dry mode on my Haier HSU-12CK2S3?
- B
  buckleynormaSep 1, 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-12CK2S3 Specifications

General

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

Summary

Parts and Functions Overview

Indoor Unit Description

Details the components and features of the indoor unit, including inlet, grille, and filters.

Remote Controller Description

Details the buttons and functions of the remote controller for operating the air conditioner.

Clock Set Operation

Instructions for setting the current time on the remote controller for timer functions.

Remote Battery Loading

Guide on how to properly insert batteries into the remote controller.

Air Conditioner Operation Modes

Unit Start and Stop

Instructions on how to turn the air conditioner unit on and off using the main button.

Auto Operation Mode

Automatic mode that adjusts cooling/heating based on room temperature.

Cool Operation Mode

Procedure for operating the unit in cooling mode to lower room temperature.

Dry Operation Mode

Mode for dehumidification, reducing moisture in the air.

Fan Operation Mode

Operation mode that only circulates air without cooling or heating.

Heat Operation Mode

Procedure for operating the unit in heating mode to raise room temperature.

Air Flow Direction Adjustment

How to adjust the horizontal and vertical louvers for airflow direction.

Advanced Operation Features

Health Operation

Utilizing the anion generator for air purification and improving air quality.

Timer Operation

Setting automatic start/stop times for the unit to manage operation.

Emergency and Test Operation

Procedures for emergency use and operational testing of the unit.

Sleep and Power Management

Comfortable Sleep Mode

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

Power Failure Resume Function

How the unit automatically resumes operation after a power interruption.

Maintenance and Cleaning Guidelines

Indoor Unit Maintenance

Instructions for cleaning and caring for the indoor unit body and its components.

Remote Controller Care

Proper methods for cleaning and maintaining the remote controller.

Cleaning Precautions

Important warnings about substances to avoid when cleaning the unit.

Air Filter Replacement and Cleaning

Steps for cleaning and attaching air purifying and standard air filters.

Safety Precautions and Cautions

General Safety Warnings

Essential warnings and cautions regarding installation, operation, and usage.

Troubleshooting Common Issues

Normal Performance Checks

Checks for normal operation phenomena like delayed restart and system noises.

Cooling Performance Issues

Troubleshooting steps for poor cooling, including filter and fan speed checks.

Multiple Checkpoints

Comprehensive checks for power, filters, obstacles, and environmental factors.

Operational Cautions and Specifications

Applicable Ambient Temperature Ranges

Specifies the operating temperature limits for different modes and unit types.

General Operational Notes

Important notes on supply cord, fuse replacement, installation height, and battery disposal.

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