Haier HSU-09RS03/R2(SDB), HSU-12RS03/R2(SDB) Service Manual

SERVICE MANUAL

Order No.$&69

S -Series

Haier Group

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

WARNING

Wall mounted Type

DC Inverter

Model No.

HSU-09RS03/R2(SDB)

HSU-12RS03/R2(SDB)

Removal of Front Grill

9.1

9.2

9.3

Removal of Vertical Blades and Swing Motor

9.4

9.6

9.7

9.8

9.9

5.3

5.4

5.2

Removal of Filter and Blade

Removal of Front Panel

Main function and control specification of outdoor unit

HSU-09/12RS03/R2(SDB)

Main function and control specification of indoor unit

7. Service Diagnosis

Removal of Drain Pan

9.5

Removal of Display Assembly

Function of Main thermistor

11 Description of Coding Rules of Unit Model.................................................. 98

9.10

9.12 Removal of Fan and Fan motor

9.11

9.13

9.14

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

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

HSU-09/12RS03/R2(SDB)

Removal of Outdoor Panel

Removal of Fan Motor Bracket and Partition

Removal of Compressor and Heat Exchanger

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 conduct a test operation to ensure that the equipment operates

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

1.1.1 Caution in Repair

Warning

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

arepair.

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.

HSU-09/12RS03/R2(SDB)

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

shocks.

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.

1.1.2 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

HSU-09/12RS03/R2(SDB)

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.

HSU-09/12RS03/R2(SDB)

Introduction

Domestic Air Conditioner

1.1.3 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.

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.

For

integral

units only

HSU-09/12RS03/R2(SDB)

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.

HSU-09/12RS03/R2(SDB)

2 List of fuctions

N/YyrogetaC

Healthy negative ion

Make your room full of an abundance natural negative

ions

Left&right flow

With specialized motor and flaps, the airflow can be adjusted .

Child lock

Avoid the child's wrong operation on the remote

3D air flow

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

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 asundden power blackout

Easy clean design

The panel is easy to wash and the airflow vents can be detached easily

Intelligent air

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

Anti-mold filter

Catches most small particles and remove unpleasant odors effectively.

Sleep mode

The setting temprature and the indoor noise can be adjusted to a more comfortable level when you set the "sleep mode"during night sleep

YOTUA,IH,DEM,OLdeepsnafehttcelSgnittesnaF4

Entire auto mode

When air-con is in auto mode, it decides the running mode according to temperature difference between setting temperature and indoor temperature.

ESF filter Trap harmful dust and remove unpleasant odors effectivel

Ygnitaehrogniloo

ckciuQedomrewoP

YnoitidnocnoitarepoesionrewoLedomtfoS

Y.retlifehtybsnoievitagenetareneGretlifnoievitage

human perceptible

By detecting number and location of people indoor, airflow, air speed and temperature can be adjusted

automatically

Hidden Display

When the air-con is off, you can't see the display screen, which looks like part of the panel.

electric deicer

Automatically clean ice on outdoor unit and make the unit work normally.

10ć control

Indoor temperature can be controlled at 10ć by pressing the 10ć button when leaving room.

Note: Y: Holding Functions

N : No Functions

Functions

11250(3050~20450)

9200(2350~13650)

20(160~1100) 630(180-1710)

5.19 5.24

4.57

0.15

3.3(0.9 ~6.0)

12.5.

14.5

2322(602~3440)

2.6

3.2

830

(160~1460) 920(180

~2030)

3.7

4.2

1.2

5151

0202

390X888X335

2838(774~5160)

14300

(2050~22150)

12000(2350~15000)

4.2

(0.9~6.5)

3.5(0.7~4.4)

3010(602

~3784) 3612

(774~5590)

4.22

1.6

9.52

298x800X243

390X888X335

298x800X243

12.5

14.5

37/25/23

36/24/22

HSU-09/12RS03/R2(SDB)

HSU-09RS03/R2(SDB) HSU-12RS03/R2(SDB)

2.7(0.7~4.0)

87 86

11.7

10.4

9.2

12.7

11.4

10.2

11.7

10.4

9.2

12.7

11.4

10.2

3 Specifications

LSL

0.50.5

R410aR410a

1.15

33.3

1175.5 1175.5 1175.5 1175.5

33.3

36.5

33.5

36.5

33.5

783X255643X

714X930X340

783X255643X

714X930X340

830 920

3.7

4.2

8.0

58 58

900

HSU-09/12RS03/R2(SDB)

SNB130FGYM2 SNB130FGYM2

HSU-09RS03/R2(SDB) HSU-12RS03/R2(SDB)

1.15

900

2.6

3.2

520 630

8.0

FV50S FV50S

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Connector Wring Diagram

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4.1᧶Indoor unit Connectors

Connectors

PCB(1) (Control PCB) PCBď

1Đďcontrol PCBĐ

1) CN12,CN13 connector for L&R step motor

2) CN11 connector for Up&down step motor

3) CN26 connector for DC fan motor

4) CON7 connector for communication line between the indoor and outdoor

5) CN1 connector for ambient temp. sensor and piping temp. sensor

6) CH1 connector for power L wire

7) CON12 connector for L in terminal block

8) CON2 connector for N in terminal block

8) CN32 connector for display board

9) CON6 CON8 connector for ions generator

Note: Other designations

PCB(1) (INdoor Control PCB)

1) CN48 Connector for Forced operation ON / OFF switch

2) J1 Select 25 or 35

3) RV1 Varistor

4) FUSE1 Fuse 3.15A/250VAC

PCB1

CN11 CN26 CN13

CN48

CN32 CN12

CN1

CON7 CON6

CON8

CH1

CON2

CON12

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Connector Wring Diagram

4.2: outdoor unit

Connectors

PCB(1) (Control PCB)

1) CN1ǃCN2 Connector for power N and L

2) CN3 Connector for ground

3) CN22 Connector for DC POWER 15V and 5V to the module board

4) CN22ǃCN23 Connector for CN10,CN11 on the module board

5) CN21 Connector for fan motor

6) CN10 Connector for four way valve coil

7) CN17ǃCN18ǃCN19ǃCN20 Connector for thermistors

8) CN23 Connector for communicate between the control board and the module board

9) CN26ǃCN24 Connector to P and N of the module board

10) CN4 Connector for communicate between indoor and outdoor unit

11) CN16 Connector for electric expansion valves

12) CN9ǃCN8 Connector to L and N of the module board

PCB(2) (module PCB)

CN10 Connector for the DC power 5V and 15V form the control PCB

CN11 Connector for communicate between the control board and the module board

P( CN1), N(CN5) Connector for capacitance board

LI (CN7),LO(CN6) Connector for reactor

Note: Other Designations

PCB(1) (Control PCB)

1) FUSE 1, (25A,250VAC) FUSE 2(1A,250VAC)

2)LED 1 keep light representative normal ,if keep flash interval representative trouble Alarm

3)RV1,RV2,RV3 Varistor

HSU-09/12RS03/R2(SDB)



Connector Wring Diagram



Domestic Air Conditioner

PCB(1)

CN2

CN1

CN3

CN26 CN24

CN4

CN23

CN22

CN21

CN17

CN18

CN19

CN20

CN10

CN9

CN8

CN16

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Connector Wring Diagram

PCB(2)

CN6 CN7

CN11

CN10

CN5

CN1

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Function and control

5.Funcitions and Control

5.1 Main functions and control specification of indoor unit

This specification use for HSU-09/12RS03/R2(SDB) frequency conversion air condition are

manufactured by Haier air condition parent company. "Setting value" (express in parameter) in

this specification means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter

table].

5.1.1 Temperature Adjusting function

5.1.1.1 Temperature adjusting of different levels.

(DASH operation conditions under different modes)

5.1.1.2 Select the wind volume when it is set automatic

When the wind volume is automatic, it can be switched between strong, medium and weak according

to the temperature adjusting levels.

Wind volume under the automatic wind volume mode

Temperature adjusting levels

A B C D E F G H I

Heating

Strong Strong Strong Strong Strong Medium Weak Weak SLO

cooling

Strong Strong Strong Medium Medium Weak Weak Weak

Moisture

removing

Strong Medium Medium Medium Weak Weak SLO SLO

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HSU-09/12RS03/R2(SDB)



Function and control



Domestic Air Conditioner

5.1.1.3 Wind volume limit

When the compressor is working and the max setting for indoor fan motor is medium or weak, the

upper limit of indicated frequency is as follows:

Frequency control form for wind volume in cooling mode

Limited frequency

variables

Limited frequency

Medium wind volume FQLIMMD 40Hz

Weak wind volume FQLIMLO 36Hz

Limited frequency for

up/down health wind

FUPHEAL 80Hz

5.1.2 Main functions

5.1.2.1 Warm boot

When the heat running starts or the frost removing ends and the compressor starts again, in order to

avoid cold wind, warm boot wind volume control should be done.

Heat exchange temperature

THHOT3喈37ć˅

THHOT2喈35ć喉

THHOT1喈25ć喉

THHOTR喈23ć˅



4 minutes

Stop weak setting weak stop

To control the indoor fan motor as shown in the table above according to the heat exchange

temperature The fan motor stops when the heat exchange temperature is below 25ć The fan motor is working slightly weak when the heat exchange temperature is above25 ć and below 35ć The fan motor is working weak when the heat exchange temperature is above35 ć and below 37ć

The fan motor works as set if the he heat exchange temperature remains above 38ć

slightly

weak

slightly

weak

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Function and control

5.1.2.2 When the compressor stops and remains idle for 3 minutes

1. Turn off the air conditioner by remote control; the indoor fan stops operation.

2. The temperature sensing device stops running and the indoor fan operates under wind mode.

3. When the air conditioner turns to the heating mode from other modes and the compressor fails to

start, the indoor fan will operate under wind mode.

5.1.2.3 Dehumidification running

Under the dehumidification mode the fan motor stops as the compressor stops

The operation is weak after 3 minutes’ idle mode

After stand by for 3 minutes, the compressor is on.

The compressor operates as the set wind volume when the wind volume is set to be strong, medium

or weak

The wind volume is decided according to the temperature adjusting when the wind volume is set to be

automatic.

Moisture removing running

Level H 3minutes idle mode

Compressor

OFF

Setting slightly OFF weak weak setting

weak

5.1.2.4 Automatic running

When the running mode is turned to automation after starting the system, the system will first

determine the running mode according to the current room temperature and then will run according to

the determined mode. Tr in the following selection conditions means room temperature, Ts means

setting temperature, Tp means temperature of indoor coil pipe Tr23 Choose Cooling Modeć Tr˘23 Choose Heating Modeć

After turning to the automation mode, the running mode can be switched between cooling mode, fan

mode and heating mode according to the change of the indoor ambient temperature. But the

automatic conversion between cooling mode and heating mode must be conducted after 15 minutes.

5.1.3 Special functions

5.1.3.1 Powerful running

The mode switch ends the powerful running

Enter into the silent mode, normal running mode or timed switching on mode to end the powerful

running

When in automatic mode, there are powerful and silent functions for your choice. When the main unit

is in cooling mode, it operates with powerful cooling or silent cooling. When the main unit is in heating

mode, it operates with powerful heating or silent heating. When the main unit is in wind-sending mode,

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Function and control

there are no powerful or silent modes.

There is no powerful mode for wind-sending and moisture removing

Powerful heating˖

Change the set temperature. With temperature adjusting function

The wind volume is the automatic medium

When in frost removing mode, the outdoor unit does not accept the communication signal for powerful

running

Powerful cooling˖

Change the set temperature. With temperature adjusting function

The wind volume is the automatic strong

After the compressor starts, there will be no low-intense running protection within 3 minutes

5.1.3.2 Silent running

Send the silent running signal to the outdoor unit

Under the Silent hearing mode,The wind volume is SSLO after the compressor is on,The wind volume

will be kept SSLO within 20 seconds after the compressor stops and then changes to weak

Under the Silent cooling mode the wind volume is SSLO

There is no silent mode for moisture removing and wind-sending.

5.1.3.3 Air cleaning

If the fan motor starts working after receiving the remote-control order, the aion generator starts

working and sends out ions.

The ion generator stops as the fan motor stops.

When the ion generator is OFF and the air cleaning function is on, the fan motor starts running and

the ion generator starts working again.

5.1.3.4 Timed running

Set the time duration according to the time difference between the clock for

timing and the current clock

In timing mode, the display panel will flash the light at fixed times

Timed When this function is set, operation modes on the panel display will not

OFF change. The timing icon will show and the operation stops when the set time comes.

Timed When this function is on, the panel display will only display a question mark.

ON The unit will operate as the set mode when the time comes.

Timed The unit will start operating or stop according to the order of your setting.

ON/OFF

Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Function and control

5.1.3.5 Sleeping function

a.After setting the sleeping function, the refrigerating mode and dehumidification mode will run as per

the following rules:

1 hour 1 hour 6hours

T()

Ts+2

Ts+1

Ts Sleep OFF t(hour)

b.After setting the sleeping function, the heating mode will run as per the following rules:

T() 1 hour 1 hour 3hours 3hours

Ts-2

Ts-4

Ts-5

Ts Sleep OFF t(hour)

As shown in the above diagram, after running for 1 hour under refrigerating mode and

dehumidification mode, the setting temperature will increase about1

; after another 1 hour, it will

increase about1

 again, and after 6 hours, it will cease; after running for 1 hour under heating

mode, the setting temperature will decrease about2

, after another 1 hour, it will decrease the

about 2

 again, and after 3 hours, it will increase about 1 , and after other 3 hours, it will cease.ć

5.1.3.6 Trial running

The indicated frequency for trial running is 58Hz, wind volume is strong.

The trial running will last for 30 minutes and then the unit will be powered off. The unit will exit the trial

running if it receives any remote-control signal during the trial running period.

There is no low-intense running protection.

5.1.3.7 Power failure compensation

To enter into the function please press the sleep key 10 times with 4 beeps in 7 seconds

Under the power failure compensation mode, unplug and plug again ,the indoor unit will resume

original operation

Under the power failure compensation mode, unplug and plug again, the unit will be on OFF state.

Mode, Fan speed, Healthy, Set temperature can be memoried. Swing, Timer, Sleep cannot be

memoried

Press the sleep key for 10 times with 2 beeps in 7 seconds to exit.

HSU-09/12RS03/R2(SDB)



Function and control



Domestic Air Conditioner

5.1.3.8 Rated Operation

Rated Cooling:

When receiving the instruction of indoor unit rated operation, the unit will start rated cooling operation.

Rated Heating:

When receiving the instruction of indoor unit rated operation, the unit will start rated heating operation.

5.1.3.9 IFP ˄Optional Function

Press the remote control to select and enter the human perception mode; the panel will display the

human perception symbol. Two wind velocity modes are available: fixed velocity and adjustable

velocity. The specific options and control functions are as follows:

Judge the position of the human being to have air flow control.

Follow or Avoid may be set by the remote controller. When signals are detected for 10 seconds

continuously in any area, humans are determined to be in the area and the air conditioner will enter

auto control.

(1) When signals are detected in a certain zone: ķ Wind direction following  Detect the area where human beings are and adjust the deflector to

blow conditioned air towards the human body;

When humans are detected in Zone A: See Position 4

When humans are detected in Zone C: See Position 7.

ĸ Wind direction avoiding  Detect the area where human beings are and adjust the deflector to

blow air away from the human body.

When humans are detected in Zone A: See Position 6

When humans are detected in Zone C: See Position 5.

(2) When humans are detected in both areas:

+ 47 hidden pages

Haier HSU-09RS03/R2(SDB), HSU-12RS03/R2(SDB) Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual