Haier HSU-18 User manual

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HSU-18HVA103/R2(DB) HSU-22HVA103/R2(DB)
HSU-18,22HVA103/R2(DB)

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2

HSU-18,22HVA103/R2(DB) Introduction
3
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
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.

4
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-18,22HVA103/R2(DB) Introduction

5
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.
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-18,22HVA103/R2(DB) Introduction

6
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
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-18,22HVA103/R2(DB) Introduction

7
Domestic Air Conditioner
1.1.4 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:
1.1.5 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 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 in
this manual, where he/she will find additional information on a
specific topic.
HSU-18,22HVA103/R2(DB) Introduction

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4.Printed Circuit Board Connector Wiring Diagram
4.1：Indoor unit Connectors
Connectors PCB(1)(ControlPCB)
1) CON12 Connector for fan motor
2) CN3 CN4 CN5 Connector for STEP motor
3) CN8 Connector for Pipe sensor and Room temperature sensor
4) CN7 Connector for fan feedback
5) CON21 Connector for power L wire
6) CN17 Connector for communicate and power N wire
7) CN5-1 Connector for display board
8)CON14,CON15Connectorforionsgenerator
9) CN16 Connector for communication to outdoor
10) CN11 Connector for ON / OFF switch
Note: Other designations
PCB(1) (INdoor Control PCB)
1) SW2 Select 50 or 60
2) LED1 communicate display light
3)ZE1 Varistor
4) FUSE1 Fuse 3.15A/250VAC
PCBDetail PCB(1):Control PCB (indoor unit)
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11
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PCB(1)
C0N12
CN8CN5-1
CN3
CN4
CN7
CN5
CN11
C0N15
CN17
C0N21
CON14
CN16
12
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4.2 ：outdoor unit
4.2.1 HSU-18HVA103/R2（DB）unit
Connectors
PCB(1) (Control PCB)
1) CN1,CN2 Connector for power N and L
2) CN4 Connector for ground
3) CN8 Connector for DC POWER 15Vand 5V to the module board
4) CN7 Connector for capacitance board
5) CN9 Connector for fan motor
6) CN20 Connector for four way valve coil
7) CN10,CN11,CN13Connector for thermistors
(CN11: outdoor air,CN10: heat exchanger, CN13 :discharge pipe)
8)CN14 Connector for communicate between the control board and the module board
9) CN23 ,CN24 Connector for the capacitance of fan motor
10)CN3 Connector for communicate between the indoor board and the outdoor 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 and the module board
CN1,CN2 Connector for power L and N
LI (CN3),LO(CN4) Connector for reactor
P( CN8), N(CN9) Connector for capacitance board
CN5，CN6，CN7 Connector for the U, V, W wire of the compressor
Note: Other Designations
PCB(1) (Control PCB)
1) FUSE 1, Fuse (25A,250VAC)
2)LED 1 keep light representative normal ,if keep flash interval representative trouble Alarm
3)ZE 1,ZE2,ZE3,ZE4,ZE5 Varistor
13
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PCB(1)
CN14 CN13 CN11 CN10
CN8
CN7
CN1
CN2
CN9 CN24 CN23
CN3
CN4
CN20
14
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PCB(2)
CN1
CN3 CN2 CN4
CN10
CN11
CN7
CN6
CN5
CN8
CN9
15
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4.2.2 HSU-22HVA103/R2（DB）unit
Connectors
PCB(1) (Control PCB )
1) CN2,CN3 Connector for power N and L
2) CN22 Connector for filter board
3) CN8 Connector for DC POWER 15Vand 5V to the module board
4) CN7 Connector for capacitance board
5) CN9 Connector for fan motor
6) CN20 Connector for four way valve coil
7) CN10,CN11,CN13Connector for temperature sensor thermistors
(CN11: Outdoor ambient,CN10: Frost-removing, CN13 : Exhaust)
8) CN14 Connector for communicate between the control board and the module board
9) CN1 Connector for communicate between the indoor and the outdoor units
PCB(2) (module PCB)
CN10 Connector for the DC power 5V and 15V form the control PCB
CN11 Connector for communicate between the control and the module board
CN1,CN2 Connector for power L and N
LI (CN3),LO(CN4) Connector for reactor
P( CN8), N(CN9) Connector for capacitance board
CN5，CN6，CN7 Connector for the U, V, W wire of the compressor
PCB(3) (Filter PCB)
1) P506,P507 Connector for power N and L
2) P508,P509 Connector for power N and L to indoor
3) P505,RL501 Connector for power N and L to module
3) P501,P503 Connector for capacitance anode
4) P502,P504 Connector for capacitance cathode
5) CN501 Connector for control PCB
3) P512 Connector for GNG
Note: Other Designations
PCB(1) (Control PCB)
1) FUSE 1, Fuse (3.15A,250VAC)
2)LED 1 keep light representative normal ,if keep flash interval representative trouble
Alarm
3)ZE 1,ZE2,ZE3,ZE4,ZE5 Varistor
16
'RPHVWLF$LU&RQGLWLRQHU
+68+VA1R2(DB) &RQQHFWRU:LULQJ'LDJUDP

PCB(1)
CN1
CN3 CN2CN9
CN20
CN7
CN11 CN14
CN10
CN13
CN22
17
'RPHVWLF$LU&RQGLWLRQHU
+68+VA1R2(DB) &RQQHFWRU:LULQJ'LDJUDP

PCB(2)
CN1
CN3 CN2 CN4
CN10
CN11
CN7
CN6
CN5
CN8
CN9
18
'RPHVWLF$LU&RQGLWLRQHU
+68+VA1R2(DB) &RQQHFWRU:LULQJ'LDJUDP

PCB(3)
P501
P509
P502 P505 P504 P503
P507P506
CN501 P508
P512
RL501
19
'RPHVWLF$LU&RQGLWLRQHU
+68+VA1R2(DB) &RQQHFWRU:LULQJ'LDJUDP