Haier AS26TB1HRA User manual

SERVICE MANUAL
Wall Mounted Type
DC Inverter
AS26TB1HRA
AS35TB1HRA
Model 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 deal t with in thi s servic e infor matio n by anyon e else could res ult in seriou s injury or death
WARNING
2016(Qing dao Haie r Air Condi tione r Genera l corp . , Ltd)
All rights reser ved. Unauthoriz ed copying and distributio n is a violati on of law
Haier Group
Version V1 Date 2016-10-12

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 ..................................................................................
14
.43
27
26
26

Introduction
Domestic air conditioner
1. Introduction
1.1 Model name explanation
A S 2 6 T B 1 H R A
Indoor unit
Type of indoor unit: S (wall-mounted)
Nominal cooling capacity (2600W)
Platform of indoor units: T (T platform)
35T Platform
Version number
Indoor units
DC inverter
Apply toT1; 220~240V/50Hz/1Ph
A S 3 5 T B 1 H R A
Indoor unit
Type of indoor unit: S (wall-mounted)
Nominal cooling capacity (3500W)
Platform of indoor units: T (T platform)
35T Platform
Version number
Indoor units
DC inverter
Apply toT1; 220~240V50Hz/1Ph

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
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 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.
2

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
3

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.
4

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.
5

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
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

Features
Domestic air conditioner
2.Features
Super quiet: Lower noise operation condition
A-PAM DC inverter:With adoption of S-TYPE,S-PAM and PHASE control technology to works more
stably at low-frequency,and is more energy-saving,mor powerful at high frequency.
Long distance air supplying:
-15 Heating: When -15 can still heating natural
10 heating maintenance:Heating Holding 10 temperature
Confortable sleep The setting temperature and the indoor noise can be adjusted to a more comfortable
level when you set the “sleep mode” during night sleep.
Super match:One outdoor unit can match two or more indoor unit.
DIY auto mode: Adjust the last fixed operation mode automatically.
Turbo mode: Quick cooling or heating
Auto restart: Automatic return to previous operation conditions after sudden power blackout
24 hours timer: Use the timer function to set on,or off,or from on to off,or from off to on.
Intergrative valve cover:The valve cover is Intergrative.
2-way piping design: The pipe can shoot out both from left or right side.
Easy clean design: The panel is easy to wash and the airflow vents can be detached easily
Double 8 display:The display is Double 8 mode.
7

Specifications
Domestic air conditioner
3.Specifications-AS26TB1HRA
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
1/esahP
05zHycneuqerF
220~240
NOMINAL CAPACITY and NOMINAL INPUT
gnitaehgnilooc
Capacity rated
KW
Btu/h
0.780.69WK)detaR(noitpmusnoCrewoP
4.233.84W/WPOC/REE
h/³m
lavomeRerutsioM
TECHNICAL SPECIFICATIONS
mmD*W*HsnoisnemiD
msnoisnemiDdegakcaP mD*W*H
GK/thgieW
GK/thgiewssorG
//roloC
Sound level
Sound
peessure(Hi/Mid/Lo)
Sound power(high)
1.2*10 ³
dB(A)
White
dB(A)
2.65(1.2-3.0)
9000(4100-10200)
3.3（1.3-3.6）
11200(4400-12200)
865 200*290
954*279*355
9.0
11.2
39/35/32
49 49
39/35/32
Voltage

Specifications
Domestic air conditioner
TECHNICAL SPECIFICATIONS-PARTS
cooling heating
Fan
nafwolfssorCepyT
40WrotoM
Air flow rate(high) m³/h
Speed(Hi/Mid/Lo)
Heat exchanger
Type ML fin- 7HI-HX tube
4.1*41*3hctif*egats*tnemgeS
drawnwoD,latnoziroH,tfeL,thgiRlortnocnoitceridriA
Air filter
Removable/Washable/Mildew Proof
Temperature control
Microcomputer Control
EH-RYledomrellortnocetomeR
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
4 Sensors list
type Description Qty
1rofdesustIm and pipe sensoroo erutarepmetrotaropavednamR oorgnitceted
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414
cfm=m³/min×35.3
600
rpm 950/800/700 900/775/700
40

Specifications
Domestic air conditioner
3.Specifications-AS35TB1HRA
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
1/esahP
05zHycneuqerF
VegatloV
NOMINAL CAPACITY and NOMINAL INPUT
gnitaehgnilooc
Capacity rated
KW
Btu/h
1.050.96WK)detaR(noitpmusnoCrewoP
3.7
W/WPOC/REE
h/³m
lavomeRerutsioM
TECHNICAL SPECIFICATIONS
mmD*W*HsnoisnemiD
msnoisnemiDdegakcaP mD*W*H
GK/thgieW
GK/thgiewssorG
//roloC
Sound level
Sound
peessure(Hi/Mid/Lo)
Sound power(high)
1.2*10 ³
dB(A)
White
dB(A)
3.55(1.3-4.0)
12000(4400-13600)
4.0（1.4-4.3）
13600(4800-14700)
865 200*290
954*279*355
9.0
11.2
40/36/32
49 49
3.81
40/36/32
220~240

Specifications
Domestic air conditioner
TECHNICAL SPECIFICATIONS-PARTS
cooling heating
Fan
nafwolfssorCepyT
4040WrotoM
Air flow rate(high) m³/h
Speed(Hi/Mid/Lo)
Heat exchanger
Type ML fin- 7HI-HX tube
4.1*41*3hctif*egats*tnemgeS
drawnwoD,latnoziroH,tfeL,thgiRlortnocnoitceridriA
Air filter
Removable/Washable/Mildew Proof
Temperature control
Microcomputer Control
EH-RYledomrellortnocetomeR
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
4 Sensors list
type Description Qty
1rofdesustIm and pipe sensoroo erutarepmetrotaropavednamR oorgnitceted
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414
cfm=m³/min×35.3
650
rpm 1100/950/800 1000/850/700

Piping diagrams
Domestic air conditioner
5 Piping diagrams
10
EXV
EXV

Printed circuit board connector wiring diagram
11 Domestic air conditioner
6.Printed circuit board connector wiring diagram
Connectors
PCB(1) (Control PCB) For 09K/12K
1) CN9、CN8 Connector for fan motor and feedback
2) CN6 Connector for heat exchanger thermistor and Room temperature thermistor
3) CN5’ Connector for UP&DOWN STEP motor
4) CN11、CN11’ Connector for RIGHT&LEFT STEP motor
5) CN21（white line）、CN17(black line) Connector for indoor terminal N and L
6) CN7 Connector for display board
7) CON2、CON3 Connector for ion generator
8) CN23 (red line) Connector for communicate between the indoor board and the outdoor board
9) CN36 Connector for long-range control
10) CN34 Connector for wifi Module
11) CON1 Connector for fresh air
12) CN2 Connector for wired controller
13) CN51 Connector for room card
Note: Other designations
PCB(1) (Indoor Control PCB)
1) CN14 Connector for Forced operation ON / OFF switch
2) FUSE1 Fuse 3.15A/250VAC
UNIT MODEL PCB MODEL
AS２６/３５TB1HRA 0011800417E（23/26)
OFF ON
1 A B
2 N_RC RC
3ON ON OFF OFF
4 ON OFF ON OFF
3533 2623
UNIT MODEL MODEL
DISPLAY
0011800498
PCB
J1 OFF OFF ON ON
J2 OFF ON OFF ON
DISPLAY SERIES 325*/498* 324* 387* 317*
AS２６/３５TB1HRA

Printed circuit board connector wiring diagram
12 Domestic air conditioner
PCB(1)
CN2
CN9
CN21
CN8
CN23
CN6
CON3
CN5’
CN11’
CN7
CN14
CN17
CN51 CN34
CN11
CON1
CON2

Printed circuit board connector wiring diagram
13 Domestic air conditioner
Wiring diagrams
INDOOR UNIT
R:Red
W:White
Y:Yellow
Y/G:Yellow/Green
B:Black
BR:Brown
BL:Blue
PIPING TEMP.SENSOR
AMBIENT TEMP.SENSOR
SWITCH
EMERGENCY
INDOOR UNIT DIAGRAM
0010561514
Notes:
1.The dotted parts are optional.
2.The two pins of CN51 should be shorted,
when the second channel(RC) of SW2 is
selected.
UP-DOWN
STEPMOTOR
M
FUSE1
SW1
CN7
T3.15A/250VAC
TO OUTDOOR UNIT
1
(N) (C)
3
(L)
2
WB
Y/G
GND
CN14
CN6
CN10
LEFT STEPMOTOR
CN11
CN5'
R
C0N1 BL
(L)
CN21
N
SCN51
CN9
CN52
CN23
CN34
WIFI
CN2 WIRED CONTROLLER
FRESH AIR
RIGHT STEPMOTOR
ROOM CARD
CN5
DC FAN MOTOR
C0N2 C0N3
R
W
ION
GENERATOR
Y/G
CN11'
DISPLAY BOARD
SW2
123 4
ON
POWER SUPPLY
BR BL
Y/G
CN1

Functions and control
14 Domestic air conditioner
7.Funcitions and control
7.1 Main functions and control specification
7.1.1 Automatic operation
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≥Ts-3℃Choose Cooling Mode
Tr＜Ts-3℃Choose Heating Mode
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.
7.1.2 Cooling operation mode
Temperature control range: 16℃---30℃
Temperature difference: ±1℃
* Control features: When Tr（input airflow）>Ts（set temperature）+ temperature Backlash A, the
compressor will be opened, the indoor fan will operate at the set speed and the mode signal will be
sent to the outdoor system. When Tr（input airflow）<Ts（set temperature）- temperature Backlash
B, the compressor will be shutted, the indoor fan will operate at the set speed and the mode signal will
be sent to the outdoor system. The system will keep the original status if Tr= Ts.
Airflow speed control: (temperature difference 1℃)
Automatic: When Tr≤Ts+ 3℃, high speed.
When Ts+1℃≤Tr<Ts+3℃, medium speed
When Tr<Ts+1℃, low speed
When the sensor is off, low speed
When the airflow speed has no delay from the high to low switching, the speed should be delayed for
3 minutes (remain at high speed for 3 minutes.) before the next switch.
Manus: When the system is operating, you can set the high, medium or low speed manually. (When
the sensor is on or off, the system will change the speed 2 seconds after receiving the signal.)
*Airgate location control: the location for the airgate can be set according to your needs.
*Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or
dehumidifying). When the compressor works continuously for 6 minutes and the temperature of the
indoor coils has been below one centigrade for 10 seconds, the compressor will be stopped and the
malfunction will be recorded in the malfunction list. The indoor system will continue to run. When the
temperature of the indoor coil is raised to 9℃, the compressor will be restarted again (the requirement
of 3 minutes’ delay should be satisfied.)
* timing system on/off function.
* Dormant control function.

Functions and control
15 Domestic air conditioner
7.1.3 Dehumidifying mode.
* temperature control range: 16---30℃
* temperature difference: ±1℃
Control feature: send the dehumidifying signal to the outdoor system.
When Tr>Ts+2℃, the compressor will be turned on, the indoor fan will operate at the set speed.
When Tr is between the Ts and Ts+2℃, the outdoor system will operate at the high dehumidifying
frequency for 10 minutes and then at the low dehumidifying mode for six minutes. The indoor fan will
operate at low speed.
When Tr< Ts-1.5℃, the outsystem will be stopped, the indoor fan will be stopped for 3 minutes and
then turned to the low speed option.
All the frequency converses have a ±1℃difference.
* Wind speed control: Automatic:
When Tr≥Ts+ 5℃, high speed.
When Ts+3℃≤Tr< Ts+5℃, medium speed.
When Ts+2℃≤Tr< Ts+3℃, low speed.
When Tr<Ts+2℃, light speed.
If the outdoor fan stopped, the indoor fan will be paused for 3 minutes.
If the outdoor fan stopped for more than 3 minutes and the outdoor system still operates, the system
will be changed into light speed mode.
When the airflow speed has no delay from the high to low switching, the speed should be delayed for
3 minutes (remain at high speed for 3 minutes.) before the next switch.
Manual: When the sensor is off or Tr< Ts+3℃, the manual operation can not be made. (obligatory
automatic operation.)
*Airgate location control: the location for the airgate can be set according to your needs.
*Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or
dehumidifying). When the compressor works continuously for 6 minutes and the temperature of the
indoor coils has been below 1℃for 10 seconds, the compressor will be stopped and the malfunction
will be recorded in the malfunction list. The indoor system will continue to run. When the temperature
of the indoor coil is raised to 9℃, the compressor will be restarted again (the requirement of 3 minutes’
delay should be satisfied.)
* Coil protection (synchronic overheating protection) are installed for the four directions latch
sectioon 1
（COOL）
sectioon 2(DRY)
sectioon 3(STOP)

Functions and control
16 Domestic air conditioner
malfunctions when dehumidifying.
* Timing system on/off function.
* Dormant control function.
7.1.4 Heating operation mode.
* temperature control range: 16---30℃
* temperature difference: ±1℃
* control feature: the temperature compensation is automatically added and the system will send the
heating signals to the outdoor system.
If Tr+0.5℃≤Ts, the outdoor compressor is turned on, the indoor fan will be at the cold air proof mode.
If Tr>Ts+1.5℃, the outdoor system is turned off, the indoor fan will be at the heat residue sending
mode.
*Indoor fan control
manual control: You can choose high, medium, low and automatic speed control.
Automatic: When Tr<Ts, high speed.
When Ts≤Tr≤Ts+2℃, medium speed.
When Tr> Ts+2℃, low speed.
When the airflow speed has no delay from the high to low switching, the speed should be delayed for
3 minutes (remain at high speed for 3 minutes.) before the next switch.
*Airgate location control: the location for the airgate can be set according to your needs.
Coldair proof operation
1. The fan control functions as below:
* Residue heat sending. The indoor fan will send the residue heat at a low speed for 20 seconds.
If other conditions are satisfied, when the compressor stops, the indoor system will operate at a light
speed. The indoor fan will stop when the coil temperature is below the THHOT0.
* Defrosting. When the system receives the defrosting signal from outdoors, the indoor fan will stop
and the indoor temperature display won’t change. At the time, any indoor coil malfunctions will be
neglected. When the outdoor defrosting finishes, the coil malfunction will still be neglected until the
compressor has been started up for 30 seconds. The indoor temperature display will not change and
the system operates at the cold air proof mode.
* Automatic heating temperature compensation: when the system enters the heating mode, the
3
5
2
5
25
16
35
37 73medium speed
low speed
set
stop
weak speed