Haier 1U71SABFRA User manual

SERVICE MANAUL
Wall Mounted Type
DC Inverter
1U71SABFRA
Model 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
WARNING
(Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group Version V1 Date 2018-06-29

Contents
Domestic air conditioner
Contents
1. Introduction ............................................................................................1
2. Specifications.........................................................................................7
3. Sensors list ............................................................................................8
4. Piping diagrams .....................................................................................9
5. Operation range....................................................................................10
6. PCB Diagram .......................................................................................11
7. Functions and Control............................................................................
8. Dimensional drawings...........................................................................
9. Conter of gravity ...................................................................................
10. Service Diagnosis ...............................................................................
11. Performance and cerves diagrams.....................................................
12. Circuit diagrams..................................................................................
15
45
31
30
30
53

Introduction
Domestic air conditioner
1 Introduction
1.1 Model name explanation
1
1 U 7 S A B F AR
The maximum combination number
Type of outdoor unit : U (normal type)
Nominal cooling capacity (7100W)
Platform of outdoor units: S (S platform)
Australia
Version number
Heat pump & R32 refrigerant
DC inverter
Apply toT1; 220~240V50Hz/1Ph
1

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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 cooling 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.
2

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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 cooling cycle section has cooled down sufficiently before conducting repair
work. Working on the unit when the cooling 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
3

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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 cooling 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.
4

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Introduction

Domestic air conditioner
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.
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.
5

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Introduction

Domestic air conditioner
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
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.
6

Specification
Domestic air conditioner
2. Specifications - 1U53RABFRA
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
1/esahP
05zHycneuqerF
220~240VegatloV
TECHNICAL SPECIFICATIONS-UNIT
Dimensions H*W*D mm
Packaged
Dimensions H*W*D m
54GK/thgieW
60GK/thgiewssorG
Sound level 69
BderusserpdnuoS
B(A)drewopdnuoS
ELECTRICAL SPECIFICATIONS
gnitaehgnilooc
8.247.51AtnerrucgninnurlanimoN
Maximum running current A 11.4 12.6
TECHNICAL SPECIFICATIONS-PARTS
gnitaehgnilooc
Compressor
rosserpmoCyratoRepyT
ledoM
1800WtuptuorotoM
Oil type
0.5LemulovegrahcliO
Fan
naflaixAepyT
93/93WtuptuorotoM
3400h/³m)hgih(etarwolfriA
mpr)wol/hgih(deepS
Heat
exchanger
Type ML fin- 7HI-HX tube
4.1*34*2.5hctif*egats*woR
7
GTD186UKQA8JT6
A C S - 6 8 R
850/300
58
NOMINAL CAPACITY and NOMINAL INPUT
gnitaehgnilooc
Capacity rated
W
Btu/h
18901710W)detaR(noitpmusnoCrewoP
4.024.15W/WPOC/REE
h/³m
lavomeRerutsioM
2.4*10 ³
7100(1900-8400)
24200(6500-28600)
7600(2000-10200)
920×385×762
1085×487×843
25900(6800-34800)

Specification
Domestic air conditioner
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 5m
3 Sensors list
type Description Qty
3 in 1
itcetedrofdesustIrosnestneibmA edisroodtuofoerutarepmetgn
Suction sensor Its used for detecting suction pipe temperature of compressor to
adjust gas flowing 1
Defrostingsensor Its used for controlling outdoor defrosting at heating mode
taeh-revofoesacnirosser
p
mocrofdesustI
rosnes
Discharging
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414
cfm=m³/min×35.3
8
TECHNICAL SPECIFICATIONS-OTHERS
Refrigerant
circuit
Refrigerant type R32
Refrigerant charge KG 1.45
Refrigerant control EXV
Piping connections
(external diameter)
liquid mm
gas mm
drain mm
Heat insulation type Both liquid and Gas pipes
Max. piping Length m 25
Max. Level Difference m
Chargeless m 10
Amount of Additional Charge of Refrigerant g/m 20
International Protection degree IP 24
12.7
17
circuit
15

Pinping diagrams
Domestic air conditioner
4.Pinping diagrams
Filter
Filter

Operation range
Domestic air conditioner
5 Operation range
-10
0
-20 16 32
-10
-20
-15
10

Wiring diagrams
Domestic air conditioner
6.PCB Diagram
11
Connectors
PCB (1) (Outdoor Control PCB)
1) CN1, CN2 Connector for power N and L
2) CN3 Connector for ground
3) CN23 Connector for DC POWER 15Vand 5V to the module board
4) CN9, CN10 Connector for CN2,CN1 on the module board
5) CN22 Connector for fan motor
6) CN11 Connector for four way valve coil
7) CN17, CN47 Connector for thermistors
8) CN24 Connector for communicate between the control board and the module board
9) CN26, CN25 Connector to P and N of the module board
10) CN36 Connector for communicate between indoor and outdoor unit
11) CN15 Connector for electric expansion valves
12) CN50 Connector for DRED-control
13) CN45 Connector for heating- protect wire of terminal block
Other Designations
1) FUSE 1, (25A, 250VAC); FUSE 2(3.15A, 250VAC)
2) LED 1 Keep light representative normal, if keep flash interval representative trouble Alarm
3) RV1, RV2, RV3 Varistor
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 (CN8), N (CN9) Connector for capacitance board
LI (CN3), LO (CN4) Connector for reactor
CN5, CN6, CN7Connector for the U, V, W wire of the compressor

Connector Wiring Diagram
Domestic Air Conditioner
12
PCB (1)
CN1
CN2
CN36
CN24
CN10 CN9
CN22
CN11
CN17
CN50
CN47
CN23CN25CN28
CN3
CN15
CN7
CN6
CN45

CN4 CN3 CN10
CN1 CN2
CN9
CN7
CN6
CN5
CN8
CN11
Connector Wiring Diagram
Domestic Air Conditioner
13
PCB (2)

Functions and control
Domestic air conditioner
Wiring diagrams
14
THE CAPACITOR RETAINS HIGH VOLTAGE EVEN AFTER THE PLUG-OFF. FOR YOUR
●
SAFETY, BE SURE TO WAIT AT LEAST 5 MINUTES.AFTER PLUG OFF AND USE A
TESTER TO CONFIRM THE VOLTAGE BETWEEN CONNECTOR CN25 AND CN28(ON MAIN
PCB BOARD) IS LESS THAN DC 10V BEFORE START SERVICING OR LED2
EXTINGUISHED.
Note:The dotted parts are optional.
The @1 and the @2 cannot exist at the time,
but must keep one of them.
B: Black W: White
R: Red Y/G: Yellow/Green
BR: Brown OR: Orange
BL: Blue GR:Gray
DON'T TOUCH CAPACITOR, EVEN AFTER PLUG-OFF ( DANGER OF ELECTRIC SHOCK)!
COMPRESSOR
OUTDOOR UNIT WIRING DIAGRAM
M
AC-N OUT
●
ELECTRIC
EXPANSION
WARNING
●
CAUTION
AC-N OUT
AC-L OUT
AMBIENT TEMP.SENSOR
TEMP.SENSOR
COMP.TEMP.SENSOR
TEMP.SENSOR
TEMP.SENSOR
DEFROST
@1
DEFROST
COMP.TEMP.SENSOR
@2
AMBIENT
BL
OR
CN3 CN1 CN4
CN2
AC-N
REACTOR
GR
LI AC-L
GR
L0
MOUDLE PCB
CN5 CN6 CN7
W
U
B
VW
R
CN8 CN9 BL
CN10
P N
CN11
B
S(V)
R(U) C(W)
CN1
AC-N
FUSE1
N
OUTDOOR PCB
TEMP.SENSOR
SUCTION
CS
CN18
HW
CN19
TC
CN17
HW
CN17
TC CS
CN24
MODULE COM
MODULE POWER
CN23
BL
B
BL(OR W)
BR(OR B)
AC FAN
MOTOR
CN43
AC FAN
M
~
CN47
XQ
VALVE
M
VALVE A
CN15
CN10
AC-L OUT
T25A 250VAC
CN9
CAP
CN25
CN28
P
CAP AC-L CN2
1(N)
●
PE
Y/G CN50
4-WAY VALVE
DC FAN
MOTOR
M
CN22
CN3
CN11
DRED LINE
BL(OR W)
BR(OR B)
BL(OR W)
N
CN6
CN7
CN36
COMB
COMA R
3(C)
12
Y/G
TO INDOOR UNIT
0010534175A
BL(OR W)
BR(OR B)
2(L)
Y/G
POWER

Functions and control
Domestic air conditioner
7. Functions and Control
7.1 Main functions and control specification
7.1.1 The operation frequency of outdoor unit and its control
7.1.1.1 The operation frequency control of compressor
7.1.1.2 The starting of compressor
7.1.1.3 The speeds of increasing or decreasing the frequency of the compressor
7.1.1.4 The calculation of the compressor’s frequency
15
The operation frequency scope of compressor˖
Mode Minimun operation frequency Maximun operation frequency
zH811zH02gnitaeH
zH09zH02noitaregirfeR
When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz for
one minute (the overheating protection of the outdoor unit air-blowing temperature, immediately decrease the
frequency when the compressor is overflowing and releasing the pressure)ˈthen it can be operated towards
the target frequency. When the machine runs normally, there’s no such process. After starting the
compressor for operation, the compressor should run according to the calculated frequency, and every
determined frequency for protection should be prior to the calculated frequency.
The speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/second
The speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds
1˅ǃThe minimum/maximum frequency limitation
AˊWhile refrigerating: ˢˉ˩˝˴ˉ is the maximum operation frequency of the compressor; ˢˉ˩
INˉ is the minimum operation frequency of the compressor.
BˊWhile heating: ˢˉ˩˝˴ˉ is the maximum operation frequency of the compressor; ˢˉ˩INˉ
is the minimum operation frequency of the compressor.
1˅ǃThe frequency limitation which is affected by the environment temperature.
Heating mode:
Serial No. Temperature scope Frequency limitation
1 Wh_c<-12 Max_hz8 117 HZ
ZH7117zh_xaM8-<c_hW2
ZH7114zh_xaM2-<c_hW3
ZH995zh_xaM5<c_hW4
ZH091zh_xaM01<c_hW5
ZH722zh_xaM71<c_hW6
ZH262zh_xaM02<c_hW7
8Wh_c≥20 Max_hz6 45 HZ
Remarks: the above are the maximum frequency limitations of the complete appliance which are affected by
the environment, and they have nothing to do with the ability of the indoor unit.
Refrigeration/dehumidification mode::
Serial No. Temperature scope Frequency limitation
ZH831zh_xaM61<c_hW1
ZH441zh_xaM22<c_hW1
ZH551zh_xaM82<c_hW1

Functions and control
Domestic air conditioner
16
ZH472zh_xaM23<c_hW2
3Wh_c≥40 Max_hz3 90 HZ
Remarks: the above are not only the maximum frequency limitations of the complete appliance which are
affected by the environment, but also the maximum ability limitation of the system. When the starting ability is
not the maximum, its maximum frequency limitation is calculated by the following equations:
The frequency limitation which is affected by the temperature and under the condition of actual ability˙the
actural running system ability*the maximum frequency which is limited by the temperature and under the
condition of maximum ability/the maximum designing ability of the system
T=ě˄Ti*Pi˅/ěPi (Ti=|Tst_i-Tnh_i the indoor environment temperature| ;Pi˙i the ability of the
indoor unit)
Refrigeration/dehumidification:
Heating mode˖
K=ěKi/the number of running machines
The calculation of the actual output frequency: when there is no healthy airflow: F =F-ED-*hPhK
When the healthy airflow has been set: F =F-ED-*hPhK˄airflow speed˅hK˄healthy airflow˅
When refrigerating, it is needed to satisfy ˢˉ˩INˉ<F<ˢˉ˩˝˴ˉ
When heating, it is needed to satisfy ˢˉ˩INˉr< F<ˢˉ˩˝˴ˉr
7.1.2˖The outdoor fan control (exchange fan)
When the fan is changed among every airflow speed (including stop blowing), in order to avoid the airflow
speed from skipping frequently, it must be kept under each mode for over 30 seconds, and then it can be
changed to another mode (when refrigerating, the time is changed to 15 seconds).
7.1.2.1˖The outdoor fan control when refrigerating or dehumidifying
T<1 ˙1˙2˙3≥4
The percentage of the
rated frequency P
70% 80% 85% 90% 100%
T<1 ˙1˙2˙3≥4
The percentage of the
rated frequency P
70% 80% 85% 90% 100%
The indoor set airflow
speed
Low Medium High Strong Quiet Healthy
airflow
The percentage of the
rated frequency Ki
80% 90% 100% 110% 70% 65%
ZH864zh_xaM84<c_hW4
5Wh_c≥48 Max_hz5 60 HZ

Functions and control
7.1.3˖The control of the outdoor electronic expansion valve
When starting the compressor: the opening size of the valve must be guaranteed to have entered into the
standard opening size, and then the compressor can be started.
When refrigeration is in vain (the machine is shut down or is in the state of retrograde operation), the opening
size of the expansion valve of the indoor unit is 5 steps;
When heating is in vain, the opening size of the expansion valve of the indoor unit is 55 steps;
When the outdoor unit is shut down, the valve is opened completely for 2 minutes, and then begin
initialization.
The scope of refrigerationg valve 90-----480 steps
The scope of heating valve 60-----480 steps
The valves are adjusted according to the degree of superheat —SHaˈƸSHa.
7.1.4˖Four way control
For the details of defrosting four-way valve control, see the defrosting process.
Four way working in other ways:
Under the mode of heating, open the four-way valve, when the compressor is not started or changed to
non-heating mode, make sure the compressor is stoped for 2 minutes, and then close the four-way valve.
Domestic air conditioner
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17
During the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed
according to the temperature conditions of the outdoor environment.
Tao˄ć˅ Tao <ć ć Taoć Taoı29ć
7leveL5leveL3leveLyrD/looC
Tao˄ć˅ Tao <ć ć Taoć Taoıć
3leveL5leveL7leveLtaeH
After the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed
according to the temperature conditions of the outdoor environment and frequency of compressor.
Frequency of cooling mode
˄Hz˅<51 51ī70 ı70
Tao˄ć˅
İ Level 3 Level 5 Level 6
22ī Level 4 Level 6 Level 7
ı Level 7
Frequency of heat mode˄Hz˅<51 51ī90 ı
Tao˄ć˅
İ Level 5Level 7Level 7
10ī Level 4Level 5Level 5
! Level 2

Functions and control
7.1.5 ˖Protection function
7.1.5.1˖TTC high temperature-preventing protection
Once the machine is started, it can run TTC overheating protection of air-blowing, but air-blowing sensor
malfunction must alarm after 4 minutes during which the compressor is started (during the course of
self-detection, there’s no such limitation)
Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms, detection
method for each time: continuously sampling for 8 times, then order them and take the mean value of the
middle 2 values), take the mean value.
TTC˄ć˅
Abnormalstop
115
Decreasing the frequency rapidly˄1HZ/second˅
110
Decreasing the frequency slowly (1HZ/10seconds)
105
The frequency doesn’t change.
98
Increasing the frequency (1HZ/10second)
95
Increasing the frequency˄1HZ/1second˅
TTC>=115ćlasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor,
others don’t last.
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