Haier H2SM-(9+12)HEK03/R2 User manual

Order No.$&9
ON/OFF EK-Series
Model No.H2SM-(9+12)HEK03/R2
©200(Qingdao Haier Air Conditioner General corp.,Ltd)
All right reserved .Unauthorized copying and distribution is a violation of law
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
SERVICE MANUAL

Table of Contents
Domestic Air Conditioner
Table of Contents
1. Introduction 1
1.1 Safety Cautions 1
1.2 Caution in Repair 1
1.3 Cautions Regarding Products after Repair 2
1.4 Inspection after Repair 4
1.5 Using Icons 5
1.6 Using Icons List 5
2. List of Functions 6
6SHFL¿FDWLRQV 7
4. Printed Circuit Board Connector Wiring Diagram 9
4.1 Indoor unit Connectors 9
4.2 Outdoor unit Connectors 10
5. Funcitions and Control 11
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5.3 Function of Main Thermistor 19
5.4 Thermistor resistance chart 20
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6.2 Instruction 29
6HUYLFH'LDJQRVLV 48
7.1 Caution for Diagnosis 48
7.2 Problem Symptoms and Measures 48
7.3 Error Codes and Description 48
7.4. Trouble Shooting 49
8 Installation 57
9. Removal Procedure 65
9.1 The removal procedure of Indoor Unit 65
9.2 The removal procedure of Outdoor Unit 75
10. Appendix
89
10.1 Piping Diagrams 89
10.2 Wiring Diagrams 90
10.3 Circuit Diagrams 91
10.4 Description of coding rules of the unit model 93
H2SM-(9+12)HEK03/R2

H2SM-(9+12)HEK03/R2 Introduction
Domestic Air Conditioner
1
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
UThis symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
cThis symbol indicates a prohibited action.
The prohibited item or action is shown inside or near the symbol.
zThis 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 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,
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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
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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
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H2SM-(9+12)HEK03/R2 Introduction
Domestic Air Conditioner
2
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. Theinternal 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
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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
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1.3 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
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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

H2SM-(9+12)HEK03/R2 Introduction
Domestic Air Conditioner
3
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
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the connections securely and route the cable properly so that there is no force pulling the
cable at the connection terminals.
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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
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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.
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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
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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.
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.
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Be sure to install the packing and seal on the installation frame properly. If the packing and
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For integral
units only

H2SM-(9+12)HEK03/R2 Introduction
Domestic Air Conditioner
4
1.4 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.
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If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
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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
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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
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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.
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H2SM-(9+12)HEK03/R2 Introduction
Domestic Air Conditioner
5
1.5 Using Icons
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described in the table below:
1.6 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
an 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
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H2SM-(9+12)HEK03/R2 List of Functions
Domestic Air Conditioner
6
2. List of Functions
Category Functions H2SM-(9+12)HEK03/R2)
Healthy negative ion make your room full of an abundance natural negative ions. N
Child lock Avoid the child's wrong operation on the remote controller Y
Dry function Make dehumiditying in the room when the unit is working in the "DRY" mode. Y
24Hour timer Use the timer function to set on,or off,or from on to off,or from off to on Y
Auto restart automatic return to previous operation conditions after asundden power blackout Y
Easy clean design 7KHSDQHOLVHDV\WRZDVKDQGWKHDLUÀRZYHQWVFDQEHGHWDFKHGHDVLO\ Y
Intelligent air :LWKWZLQEODGHWHFKQRORJ\WKHDLUÀRZFDQEHDGMXVWHGQRWWREORZGLUHFWO\ Y
$QWLPROG¿OWHU Catches most small particles and remove unpleasant odors effectively. Y
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 Y
4 Fan setting Slect the fan speed LO,MED,HI,AUTO Y
Auto mode DGMXVWWKHODVW¿[HGRSHUDWLRQPRGHDXWRPDWLFDOO\ Y
Power mode Quick cooling or heating N
Soft mode lower noise operation condition N
1HJDWLYHLRQ¿OWHU *HQHUDWHQHJDWLYHLRQVE\WKH¿OWHU N
Constant temperature
GHKXPLGL¿FDWLRQ Make dehumidifying in the room while keeping the constant temperature inside N
Note: Y : Holding Functions
N : No Functions

H2SM-(9+12)HEK03/R2 6SHFL¿FDWLRQV
Domestic Air Conditioner
7
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Model
H2SM-(9+12)HEK03/R2
Cooling Heating
Capacity Rated(Min.~Max.)
kW 2.7/3.1/5.8 2.9/3.3/6.2
Btu/h 9215/10580/19795 9897/11262/21160
kcal/h 2322/2666/4988 2494/2838/5332
Mositure Removal L/h 1.2/1.5/2.5 —
Running Current(Read) A 3.9/4.5/8.43.8/4.3/8.1
Power Consumption
Read(Min.~Max.) W 885/1015/1900 850/970/1820
Power Factor % 97 97
COP Rated (Min.~Max.) W/W 3.05/3.05/3.05 3.41/3.41/3.41
Piping
Connctions
Liquid mm ĭ
Gas mm ĭ
Drain mm ĭ
Heat Insulation Both Liquid and Gas Pipes
Max. Interunit Piping Length m 15
Max. Interunit Height
Difference m10
Chargeless m 5
Amount of Additional
Charge of Refrigerant g/m 20
Indoor Unit
Front Panel Color White
Air Flow Rate m3/min(cfm)
9K 12K
H 7.5 8.0
M 6.5 7.5
L 5.5 6
Fan
Type Cross Flow Fan
Motor Output W20
Speed Steps 3 Steps and Auto
Air Direction Control
Right / Left / Horizontal / Downward
Air Filter Removable / Washable / Mildew Proof
Running Current (Rated)
A 0.13
Power Consumption (Rated) W29
Power Factor %97
Temperature Control Microcomputer Control
Dimensions (H×W×D) mm 265×795×187
Packaged Dimensions (H×W×D) mm 360×871×304
Weight
kg 8.8
Gross Weight
kg 11.3
Operation Sound H/M/L
dBA 39/34/29 38/33/31
Sound Power
H dBA 54 54

H2SM-(9+12)HEK03/R2 6SHFL¿FDWLRQV
Domestic Air Conditioner
8
Outdoor Unit
Casing Color Ivory White
Compressor
Type Rotary compressor
Model 44A203A(9K)/PA118X1C-4FZ(12K)
Motor Output W 850(9K)/970(12K)
Oil Type NMOCZE-Gles RB68EP(9K)/
ESTER OIL VG74(12K)
Oil Charge L 270/350
Refrigerant
Model R410A
Charge kg 0.85(9K)+1.15(12K)
Air Flow Rate
(cooling/
kHeating)
m3/min(High) 31.3/27.7
m3/min(Low) 20.5/16.8
cfm(High) 1104/977
cfm(Low) 723/593
Fan Type Propeller fan
Motor Output W35
Running Current
9K/12K/(9+12)K
Norminal
Cooling
A 3.9/4.5/8.4
Heating A 3.8/4.3/8.1
Maximum
Cooling
A 5.3/5.8/11.1
Heating A5.4/5.9/11.3
Starting current Cooling
A 21.5/15/-
Heating A 21.5/15/-
Dimensions (H×W×D)(stop valve, and
bottom support is not included)
mm 820×682×310
Packaged Dimensions (H×W×D) mm 949×745×406
Weight
kg 56
Gross Weight
kg 60
Operation Sound H/L
dBA 54
Sound Power
H/L dBA
Note: The data are based the conditions shown in the table below.
Cooling Heating Piping Length
Indoor: 27°CDB/19°CDB
Outdoor: 27°CDB/19°CDB
Indoor: 20°CDB
Outdoor: 7°CDB/6°CDB
5m
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m3/min×35.3