Haier AS24NE3HAA, HSU-12HNM03/R2, AS12NB3HAA Service Manual

SERVICE MANUAL

Wall Mounted Type

ON/OFF N-Series

AS24NE3HAAModel No.

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or Repair the product or products dealt with in this service information by anyone else could result in serious injury or death

WA RNI NG

2016 (Qingdao Haier Air Conditioner General corp. , Ltd)

Haier Group

Version V1 Date 2016-11-07

Table fo contents

Domestic air conditioner

Contents

1. Introduction ............................................................................................ 1

2. Features ................................................................................................ 7

3. Specifications ........................................................................................ 8

4. Sensors list............................................................................................ 9

5. Piping diagrams .....................................................................................10

6. Printed Circuit Board Connector Wiring Diagram..................................11

7. Functions and Control ...........................................................................

8. Dimensional drawings ...........................................................................

9. Center of gravity ....................................................................................

10. Service Diagnosis ................................................................................

11. Circuit diagrams

..................................................................................

Introduction

Domestic air conditioner

1 Introduction

1.1 Model name explanation

A S 2 4 N E 3 H A A

Indoor unit

Type of indoor unit: S (wall-mounted)

Nominal cooling capacity (24000BTU/h)

Series of indoor units: N-Series

Platform of indoor units:E Platform

Version number

Heat pump & R410A refrigerant

Apply toT1; 220~240V50HZ/1ph

Introduction

Domestic air conditioner

1.2 Safety Cautions

Be sure to read the following safety cautions before conducting repair work.

The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important

since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead

to serious accidents under some conditions if they are not followed. Therefore, be sure to observe all the safety

caution items described below.

About the pictograms

Ƹ This symbol indicates an item for which caution must be exercised.

The pictogram shows the item to which attention must be paid.

This symbol indicates a prohibited action.

The prohibited item or action is shown inside or near the symbol.

This symbol indicates an action that must be taken, or an instruction.

The instruction is shown inside or near the symbol.

After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates

Normally, and explain the cautions for operating the product to the customer.

1.2.1 Caution in Repair

Warning

Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for

a repair.

Working on the equipment that is connected to a power supply can cause an electrical shook.

If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not

touch any electrically charged sections of the equipment.

If the refrigerant gas discharges during the repair work, do not touch the discharging refrigerant gas .The

refrigerant gas can cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the welded section, release the

refrigerant gas completely at a well-ventilated place first.

If there is a gas remaining inside the compressor , the refrigerant gas or refrigerating machine oil

discharges when the pipe is disconnected, and it can cause injury.

If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas can generate

toxic gases when it contacts flames.

The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit.

Be sure to discharge the capacitor completely before conducting repair work . A charged capacitor can

cause an electrical shock.

Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug.

Plugging or unplugging the power cable plug to operate the equipment can cause an electrical shock or

fire.

Introduction

Domestic air conditioner

Warning

Do not repair the electrical components with wet hands . Working on the equipment with wet hands can

cause an electrical shock

Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical

shock.

Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid

electrical

shock.

Be sure to turn off the power switch and unplug the power cable when cleaning the equipment. The

internal fan rotates at a high speed, and cause injury.

Do not tilt the unit when removing it. The water inside the unit can spill and wet the furniture and floor.

Be sure to check that the refrigerating cycle section has cooled down sufficiently before conducting

repair

work. Working on the unit when the refrigerating cycle section is hot can cause burns.

Use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen

deficiency.

1.2.2 Cautions Regarding Products after Repair

Warning

Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to

conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can

cause an electrical shock, excessive heat generation or fire.

When relocating the equipment, make sure that the new installation site has sufficient strength to

withstand the weight of the equipment.

If the installation site does not have sufficient strength and if the installation work is not conducted

securely, the equipment can fall and cause injury.

Be sure to install the product correctly by using the provided standard installation frame.

Incorrect use of the installation frame and improper installation can cause the equipment to fall, resulting

in injury.

For

integral

units only

Be sure to install the product securely in the installation frame mounted on a window frame.

If the unit is not securely mounted, it can fall and cause injury.

For

integral

units only

Introduction

Domestic air conditioner

Warning

Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to

the electrical equipment, the internal wiring regulations and the instruction manual for installation when

conducting electrical work.

Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.

Be sure to use the specified cable to connect between the indoor and outdoor units. Make the

connections securely and route the cable properly so that there is no force pulling the cable at the

connection terminals.

Improper connections can cause excessive heat generation or fire.

When connecting the cable between the indoor and outdoor units, make sure that the terminal cover

does

not lift off or dismount because of the cable.

If the cover is not mounted properly, the terminal connection section can cause an electrical shock,

excessive heat generation or fire.

Do not damage or modify the power cable.

Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the

power cable, and heating or pulling the power cable can damage the cable.

Do not mix air or gas other than the specified refrigerant (R-410A / R22) in the refrigerant system.

If air enters the refrigerating system, an excessively high pressure results, causing equipment damage

and injury.

If the refrigerant gas leaks, be sure to locate the leak and repair it before charging the refrigerant. After

charging refrigerant, make sure that there is no refrigerant leak.

If the leak cannot be located and the repair work must be stopped, be sure to perform pump-down and

close the service valve, to prevent the refrigerant gas from leaking into the room. The refrigerant gas

itself

is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters,

stoves and ranges.

When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent

children from swallowing it.

If a child swallows the coin battery, see a doctor immediately.

Introduction

Domestic air conditioner

Caution

Installation of a leakage breaker is necessary in some cases depending on the conditions of the

installation site, to prevent electrical shocks.

Do not install the equipment in a place where there is a possibility of combustible gas leaks.

If a combustible gas leaks and remains around the unit, it can cause a fire.

Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not

installed properly, water can enter the room and wet the furniture and floor.

1.2.3 Inspection after Repair

Warning

Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet

all the way.

If the plug has dust or loose connection, it can cause an electrical shock or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to replace them.

Damaged cable and wires can cause an electrical shock, excessive heat generation or fire.

Warning

Do not use a joined power cable or extension cable, or share the same power outlet with other electrical

appliances since it can cause an electrical shock, excessive heat generation or fire.

Introduction

Domestic air conditioner

Caution

Check to see if the parts and wires are mounted and connected properly, and if the connections at the

soldered or crimped terminals are secure. Improper installation and connections can cause excessive

heat generation, fire or an electrical shock.

If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can

cause the unit to fall, resulting in injury.

Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can

cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M

ohm or higher.

Faulty insulation can cause an electrical shock.

Be sure to check the drainage of the indoor unit after the repair.

Faulty drainage can cause the water to enter the room and wet the furniture and floor.

1.2.4 Using Icons

Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in

the table below:

1.2.5 Using Icons List

Icon Type of Information Description

Note

A “note” provides information that is not indispensable, but may

nevertheless be valuable to the reader, such as tips and tricks.

Caution

A “caution” is used when there is danger that the reader, through

incorrect manipulation, may damage equipment, loose data, get

unexpected result or has to restart (part of) a procedure.

Warning

A “warning” is used when there is danger of personal injury.

Reference

A “reference” guides the reader to other places in this binder or in

this manual, where he/she will find additional information on a

specific topic.

Features

Domestic air conditioner

2.Features

4 Fan setting :Select the fan speed LO,MED,HI,AUTO

Anti-mold filter: Catches most small particles and remove unpleasant odors effectively.

Sleep mode: The setting temperature and the indoor noise can be adjusted to a more comfortable level

when you set the “sleep mode” during night sleep.

24Hour timer: Use the timer function to set on,or off,or from on to off,or from off to on

Auto restart: Automatic return to previous operation conditions after sudden power blackout

Easy clean design: The panel is easy to wash and the airflow vents can be detached easily

Child lock: Avoid the child's wrong operation on the remote controller

3D air flow: The 3D airflow is able to deliver the airflow horizontally and vertically.

Auto mode: Adjust the last fixed operation mode automatically.

Power mode: Quick cooling or heating

Soft mode: Lower noise operation condition

Intelligent air: With twin-blade technology ,the airflow can be adjusted not to blow directly

RCD module: RCD module can strongly degrade formaldehyde that caused by the chemical products.

Super Nano-Quqa: Super Nano-Quqa can ionize water molecules into nanometer water ion, which can be easily

absorbed by skin.

Note: Y: Holding functions

N: No functions

Specifications

Domestic air conditioner

3 Specifications

NOMINAL DISTRIBUTION SYSTEM VOLTAGE

1/esahP

05zHycneuqerF

032VegatloV

NOMINAL CAPACITY and NOMINAL INPUT

cooling heating

Capacity rated

KW 7.2 7.2

Btu/h 24580 24580

Power Consumption(Ra 98.1215.2WK)det

64.325.3W/WPOC/REE

h/³mlavomeRerutsioM 2.8*10 ³

TECHNICAL SPECIFICATIONS

633×248×1115mmD*W*HsnoisnemiD

614×143×1205mmD*W*HsnoisnemiDdegakcaP

16GK/thgieW

9.61GK/thgiewssorG

etihW//roloC

Sound level

Sound

peessure(high/medium/low)

49/45/40

Sensors list

Domestic air conditioner

TECHNICAL SPECIFICATIONS-PARTS

cooling heating

Fan

nafwolfssorCepyT

0505WtuptuorotoM

Air flow rate(high) m³/h 12000 1200

Speed(super/high/low) rpm 1250/1150/850 1200/ 1150 /800

Heat exchanger

Type

ML fin- 7HI-HX tube

4.1*81*3hctif*egats*tnemgeS

hgiRlortnocnoitceridriA t,Left,Horizontal,Downward

Air filter

Removable/Washable/Mildew Proof

Temperature control

Microcomputer Control

10DH-RYledomrellortnocetomeR

Note: the data are based on the conditions shown in the table below

htgnelgnipiPgnitaehgnilooc

Indoor: 27 DB/19 WB

Outdoor: 35 DB/24 WB

Indoor:20 DB

Outdoor: 7 DB/6 WB

4 Sensors list

type Description Qty

1erutarepmetmoorgnitcetedrofdesustIrosnesmooR

Pipe sensor Its used for detecting temperature of evaporator 1

Conversation formulae

Kcal/h= KW×860

Btu/h= KW×3414

cfm=m³/min×35.3

+ 24 hidden pages

Haier AS24NE3HAA, HSU-12HNM03/R2, AS12NB3HAA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual