Haier JS025-C2 User manual

SERVICE MANUAL

Wall Mounted Type

DC Inverter

JS025-C2Model No.

This servic e informatio n is designed for experience d repai r technician s only and is not designe d for use by the genera l public.

It does not contai n warning s or caution s to advise non-technic al individuals of potentia l dangers in attemptin g to servic e a product.

Product s powered by electricit y shoul d be service d or repaire d only by experience d professiona l technicia ns. Any attemp t to service or

Repai r the produc t or product s dealt with in this servic e information by anyone else could result in seriou s injury or death

WARNING

Version V1 Date 2020-12-16

Table ofcontents

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

.44

Introduction

Domestic air conditioner

1. Introduction

1.1

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

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 conductatest operation to ensure that the equipment operates

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

Introduction

Domestic air conditioner

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 toapower 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 isagas 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 .Acharged 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 Note

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

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

Caution 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 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

Wi-Fi Control Download the Intelligent Air App to an Apple or Android smart device, and link the equipment to

the smart device for system control from whenever and wherever you want.

A-PAM Control Automatically adjusts DC bus voltage in accordance with the compressor load to increase

operation voltage range.

PID Control Maximizes the working frequency before reaching the desired temperature, and, after that,

constantly makes real-time adjustments to match room air temperature with the desired temperature.

Turbo Cooling:The special control program allows the motor to work at a higher frequency. It enables users

to enioy a cool room within a much shorter time.micro-particles including dust, virus and bacteria to provide

healthier environment.

Strong Airflow:With improved fan and air duct, the air conditioner supplies up to 25% more air volume than

the conventional.

Warm Start:Blows no cold air when the unit is starting to work at heating mode, or change from cooling

mode to heating mode.

-15°C Heating:Provides powerful heating performance in cold winter with rotary compressor, etc.

Auto Restart:Returns operation to previous air conditioner settings after a sudden power break.

88 Display:Shows clearly the real-time room temperature or desired temperature on the panel.

Auto Mode:Helps air conditioner choose cooling or heating automatically based on desired temperature and

ambient temperature.

Low Watt Standby:Lowers stand-by power consumption from 8W to about 1W by optimizing control

programme.

Intelligent Air:Directs the airflow upwards at cooling mode, and downwards at heatina mode to provide better

air conditioning performance.

Sleep Mode:Provides maximum comfort and energy saving during your good night's sleep.

Specifications

Domestic air conditioner

3.Specifications

NOMINAL DISTRIBUTION SYSTEM VOLTAGE

Phase / 1

Frequency Hz 50

Voltage V 220-240

NOMINAL CAPACITY and NOMINAL INPUT

Cooling heating

Capacity rated

KW 2.6 2.8

Btu/h 8870 9555

Power Consumption(Rated) KW 0.8 0.75

EER/COP W/W 3.23 3.71

Annual energy consumption KWh / /

Moisture Removal m³/h 1*10﹣³

TECHNICAL SPECIFICATIONS

Dimensions H*W*D mm 820×195×280

Packaged Dimensions

H*W*D mm 909*279*355

Weight / KG 8.2

Gross weight / KG 10.5

Color / / White

Sound level

Sound pressure(high/medium/low)

dB 37/33/29

Sound power dB 54

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