Haier AS30PF2LAA User manual

SERVICE MANUAL
Wall Mounted Type
ON/OFF
Model No.AS30PF2LAA
HSU-30LPA03/R2(T3&T4)
2022-05-10

Table fo contents
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. System configuration.............................................................................
9. Dimensional drawings ...........................................................................
10. Center of gravity ..................................................................................
11. Service Diagnosis ................................................................................
12. Circuit diagrams ..................................................................................
14
34
29
28
28
27
13.Remove Procedure............................................................................. 36

Intuoduction
Domestic air conditioner
1 Introduction
1.1 Model name explanation
1
A S A
Nominal cooling capacity (30000BTU/h)
Type of indoor unit: S (wall-mounted)
Indoor unit
100P Platform
Platform of indoor units:P(P platform)
22-240V 50HZ/1Ph
P
30F2A
L

Intuoduction
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

Intuoduction
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

Intuoduction
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

Intuoduction
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
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.

Intuoduction
Domestic air conditioner
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
1.2.6 Embedded wire checking before installation
Check the embedded wire diameter suitable to request:
(Power supply from indoor: 2.5kw ≥1.0mm2 3.5kw,5kw ≥1.5mm2 7kw ≥2.5mm2 ; Power supply from
outdoor
≥1.0mm2 )
Check the embedded wire are four roots, L/N/COM/GND; GND is needed, if not, thunder or high
voltage wave from power grid will impact to the performance
Using a multi-meter to test short circuit of the four roots wires, make sure no short circuit happen.

Specifications
Domestic air conditioner
2.Features
4 Fan setting :Select the fan speed LO,MED,HI,AUTO
Anti-mold filter: Catches most small particles and remove unpleasant odors effectively.
Sleep mode: The setting temperature and the indoor noise can be adjusted to a more comfortable level
when you set the “sleep mode” during night sleep.
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 sudden power blackout
Easy clean design: The panel is easy to wash and the airflow vents can be detached easily
Child lock: Avoid the child's wrong operation on the remote controller
3D air flow: The 3D airflow is able to deliver the airflow horizontally and vertically.
Auto mode: Adjust the last fixed operation mode automatically.
Power mode: Quick cooling or heating
Soft mode: Lower noise operation condition
Intelligent air: With twin-blade technology ,the airflow can be adjusted not to blow directly
RCD module: RCD module can strongly degrade formaldehyde that caused by the chemical products.
Super Nano-Quqa: Super Nano-Quqa can ionize water molecules into nanometer water ion, which can be
easily absorbed by skin.
Note: Y: Holding functions
N: No functions
7

Specifications
Domestic air conditioner
3 Specifications
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
1/Phase
50HzFrequency
220-240VVoltage
NOMINAL CAPACITY and NOMINAL INPUT
cooling heating
Capacity rated
W
Btu/h
Power Consumption(Ra W
/W
EER/COP
KWhAnnual energy consumption
m³/hMoisture Removal
TECHNICAL SPECIFICATIONS
mmW*D*HDimensions
mmW*D*HPackaged Dimensions
KG/Weight
KG/Gross weight
White//Color
Sound level
Sound
peessure(high/medium/low) dB
Sound power(high/medium/low) dB /
8
Piping
Connections
Liquid
Gas
mm
mm
Φ9.52×0.65
Φ15.88×0.8
8206(T1)/7034(T3)
28000(T1)/24000(T3)
2370(T1)/2823(T3)
11.8(T1)/8.5(T3)
6399
1316*270*365
1316*270*365
2×10³
21
24.6

Specifications
Domestic air conditioner
TECHNICAL SPECIFICATIONS-PARTS
cooling heating
Fan
nafwolfssorCepyT
WtuptuorotoM
Air flow rate(high) m³/h 1600
Speed(super/high/low) rpm 1300/1 00/ 00
Heat exchanger
Type ML fin- 7HI-HX tube
2*22*1.3hctif*egats*tnemgeS
hgiRlortnocnoitceridriA t,Left,Horizontal,Downward
Air filter Removable/Washable/Mildew Proof
Temperature control Microcomputer Control
YL-HE22ledomrellortnocetomeR
Note: the data are based on the conditions shown in the table below
4 Sensors list
type Description Qty
1erutarepmetmoorgnitcetedrofdesustIrosnesmooR
Pipe sensor Its used for detecting temperature of evaporator 1
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3412
cfm=m³/min×35.3
9
Piping length
cooling
Indoor: 27 DB/19 WB
●
Outdoor: 35 DB/24 WB 5m

Piping diagrams
Domestic air conditioner
5 Pinping diagrams
10
15.88 CuT
9.52 CuT

Connector Wiring Diagram
11 Domestic air conditioner
6.Printed Circuit Board Connector Wiring Diagram
6.1 Indoor unit
Connectors Indoor PCB
JOFF
●
OFF ON ON
JOFF OOONNN
317 324 325 387
JON ON O O
J ON
OFF ON
OFF
J ON
ON OFF
OFF
J O O O O
J ON OFF
O
O
J ON ON
OFF
OFF
OFF OOONNN
1 CN17 connector for power line L.
2 CN22 connector for compressor control
3 CN9 connector for DC fan motor.
4 CN43,CN44 connector for ION generator
5 CN7 connector for receiver display.
6 CN6 connector for Temperature sensor
7 CN35 connector for WIFI
8 CN10/11 connector for right and left step motor
9 CN5/5 connector for up and down step motor
Note: Other designations PCB
1) J5: OFF-match A code remote control; ON-match B code remote control
J6: OFF-no room card control; ON-with room card control
J1,J2,J7 combined control, corresponding to 23, 26,33and35of the machine
respectively
2) J3 and J4 combined control, corresponding to different series of display boards;
ON means keep; OFF means cut
UNIT MODEL PCB MODEL J1/J2/J7/J5/J6
AS30PF2LAA 0011800923C(E) J1-OFF/J2-ON/J7-ON/J5-ON/J6-ON
UNIT MODEL PCB MODEL J3/J4
AS30PF2LAA 0011800387D J3-ON/J4-ON
J5 OFF
ON
AB
J6 OFF
ON
N_RC RC

Connector Wiring Diagram
12 Domestic air conditioner
Connector wring
diagram
CN17
●
CN10/11
CN5/5
CN7
CN6
CN35
CN
●
22
CN9
CN43
CN44

13

Domestic air conditioner
Functions and control
Functions and control
7.1 Main functions and control specifications
●
Including brief introduction to air conditioners of series models and electric control function.
●
7.1.1 Automatic running
7.1.1.1 Automatic running mode
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
a. Tr 23 running cooling mode
b. Tr<23 running 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 Indoor temperature control
Temperature control range: 16 -30
Temperature control precision: 1
Compressor can’t be controlled by temperature sensor within 2 minutes after it starts
7.1.2.1 Cooling mode:
●
When Tr> Ts, outdoor fan motor and compressor on, and indoor fan motor run at fixed wind speed. When Tr
Ts, outdoor fan motor and compressor off, and when Tr > Ts, outdoor fan motor and compressor are working
again .If Tr=Ts, the indoor fan motor, outdoor fan motor and the compressor’s state will not change.
7.1.2.2 Heating mode:
●
When Tr Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan motor runs as in cold
blast avoidance mode, and 4 of compensation is added after compressor is started.
When Tr>Ts+5 , compressor is off, and the indoor fan motor runs as in cold blast avoidance mode.
When Tr<Ts+5 , compressor, four-ways valve and outdoor fan motor is on, and the indoor fan motor runs
as in the mode of avoiding cold blast.
7.1.3 Cooling run mode:
●
Temperature control range: 16 -30
Temperature control precision: 1
Compressor can’t be controlled by temperature sensor within 2 minutes after it starts.
Control character: when Tr Ts, outlet air from compressor is on and indoor fan motor run at fixed wind speed.
When Tr Ts, outlet air from compressor is off, and when Tr>Ts, outlet air from compressor is on.
Wind speed control: (the temperature difference is 1 )
Auto: when Tr>=Ts+3 , the wind speed is high;
when Ts+1 Tr Ts+3 , the wind speed is medium.
when Tr Ts+1 , the wind speed is low.
When temperature sensor is off, the fan motor runs at low speed.
When the wind speed changes from low to high, there is no delay, and when it changes from high to low,
there is a 3-minutes delay before conversion.
7
14

Functions and control
Manual operation: When unit is on the wind speed can be set to high, medium, low or automatic as
required (execute instruction 2 seconds later after receiving remote signal)
Compressor control The compressor can’t be controlled by temperature sensor within 2 minutes after
start up and can be only restarted at least 3 minutes later after shutdown. There is no 3-minute protection with
●
power on for the first time (over 3 minutes with power off). The compressor must stand by for 3 minutes before
it is restarted after shut down.
●
There is no 2-minute limit when changing the temperature setting or shutting down the machine through
the remote controller, and the machine can be shut down immediately.
Avoiding electrical shock: outlet air is available 2 seconds later after startup.
High temperature expiration protection:
High temperature expiration prevention: When the temp.of coil pipe is above 60 , compressor and outlet air
stop running 10 seconds later, and inlet air runs as the temp. sensor is off. When compressor stands by for 3
minute and the temp. of coil pipe is below 50 , the unit can be started again.
Protection of frost is available (disable in test run or heating mode): In order to prevent the indoor heat
exchanger from freezing (in refrigeration or dehumidifying mode), the compressor will be shut off when the
temperature of the indoor coil pipe is or below 1 and the compressor runs for over 5 minutes. When the
temperature of the indoor coil pipe ascends to over 7 , the compressor is restarted (must meet a 3-minutes
delay)
Timer on, Timer off and sleep control are available.
7.1.4 Dehumidifying mode:
Temperature control range: 16
●
-30
Control character:
When Tr (indoor temperature) > Ts (temperature setting) +2 , compressor and outdoor fan motor run
continuously with indoor fan motor running in accordance with the wind speed setting(State 1).
When Ts Tr Ts +2 , outlet air from compres
●
sor is on for 10 minutes and off for 6 minutes, the indoor fan
motor is off in 3 minutes after shut down of compressor and gives breeze in other time(State 2).
When Tr < Ts, outlet air from compressor is unavailable, and the indoor fan motor enter breeze mode 3
minutes later after shut down of compressor(State 3).
When all the ranges alternate, there is ±1 difference.
7.1.5 Heating mode:(cooling only have no the mode )
●
*Temperature control range: 16 -30
*Temperature control precision: 1
*Control Character:
When Tr Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan motor runs as in cold blast
mode, and 4 of compensation is added after compressor is started.
When Tr Ts+5 , compressor is off, and the indoor fan motor runs as in warm blast mo
Domestic air conditioner
15

Domestic air conditioner
Functions and control
When Tr<Ts+5 , compressor, four-ways valve and outdoor fan motor is on, and the indoor fan motor runs as
in the mode of avoiding cold blast.
*Control of indoor fan motor:
Manual operation: The wind speed can be set to high, medium, low or automatic as required.
Automatic operation: When Tr Ts, the wind speed is high;
When Ts Tr Ts+2 , the wind speed is medium.
When Ts+2 Tr, the wind speed is low.
*Control of air door: setting the position of air door as required.
*Compressor control The compressor can’t be controlled by temperature sensor in 2 minutes after start
up and also can’t be started again at least 3 minutes later after shut down. There are 3-minute protection with
power on for the first time (over 3 minutes with power off). The compressor must be started again 3 minutes
later after shut down.
*Avoiding electrical shock: outlet air is available 2 seconds later after start up.
*Timer on, Timer off and sleep control are available.
*Control of 4-way valve: When the unit is started for the first time, the 4-way valve starts running 10
●
seconds earlier than compressor does. After compressor stops running, the 4-way valve continues running for
2 minutes and then stops. If changing the unit from heating to cooling, the 4-way valve is shut off 2 minutes
later and compressor is started 3 minutes later.
●
*Cold draft prevention:
Compressor is interrupted during the defrosting operation and continues to run after defrosting is
completed. When the indoor exchanging temperature is below 23 , the indoor fan motor is off. When the
indoor exchanging temperature is above 23 , the indoor fan motor is running at weak speed.
If the temperature of coil pipe can’t be above 38 4 minutes later after start up fan motor is running
at the preset wind speed.
If the temperature of coil pipe is above 38 4 minutes later after start up, fan motor i
●
s running at the
preset wind speed.
If coil pipe descends to the temp. lower than 38 from 38 . fan motor is running at the preset wind
speed.
*Warm blast: If the temperature sensor is off. Compressor stops running. If the temperature of coil pipe is
above 23 , fan motor enter breeze mode; and if the temperature of coil pipe is below 20 , fan motor stops
running.
*High temperature protection and high temperature expiration protection:
High temperature prevention: When the temp. of coil pipe is above 53 , the outdoor fan motor stops.
When the temp descends to 49 , the outdoor fan motor is restarted and fan speed invertage frequency is
more than 45 seconds.
High temperature expiration prevention: When the temp.of coil pipe is above 60
●
, compressor and
outlet air stop running 10 seconds later, and inlet air runs as the temp. sensor is off. When compressor stands
by for 3 minute and the temp. of coil pipe is below 50 , the unit can be started again.
*Overcooling protection One and half a minutes later after compressor starts, if the temperature of coil
pipe is below 1 , compressor and air outlet stop, and air inlet runs according to the temp. setting.
Compressor can be restarted 3 minutes later.
*Defrosting:
Entry conditions of defrosting:
The entry conditions of defrosting are classified into two types: intelligentized defrosting and sensor
defrosting. Through selecting and judging, the models without outdoor sensor defrost according to
intelligentized defrosting, and others with sensor defrost according to sensor defrosting.
16

Domestic air conditioner
Functions and control
Intelligentized defrosting:
Indoor unit enter overload protection and air outlet stops when air outlet has been restarted and runs
over 10 minutes, and compressor runs over 45 minutes in total and over 20 minutes continuously, and the
temp. of indoor coil pipe is below 38 .
Compressor runs 20 minutes continuously, and the temp. of indoor coil pipe decreases 1 per 6
minutes and this operation repeats 3 times, and the temp. of coil pipe is below 38 , and 5 minutes later after
compressor is restarted.
When compressor runs over 3 hours in total and over 20 minutes continuously and after the temp. of
indoor coil pipe is below 38 , the system enters defrosting mode.
The difference between the temp. of indoor coil pipe and the indoor temp. is below 16 and lasts 5
minutes, compressor runs over 45 minutes in total and over 20 minutes continuously after the temp. of indoor
coil pipe is below 38 , the system enters defrosting mode.
Exit conditions of defrosting:
●
Defrosting time is higher than 9 minutes (compressor is on).
During the defrosting and 2 minutes after quitting the defrosting mode, abnormality of temp. sensor
isn’t detected.
After quitting the defrosting mode, the fan motor enter cooling prevention mode.
7.1.6 Timer function:
●
You can set 24-hour timer on or timer off as required, and the minimum time unit is 1 minute. After
setting, the indicator of indoor unit is on, and it is off when timer setting is completed. There are several timer
●
modes as follows.
7.1.6.1 Timer on: The LED of “timer on” lights up and unit behaves with halt status. Timer on is
completed, and then unit starts running with the LED of “timer on” off. The unit starts with the last setting
receiving timer signals, and sleep setting is not allowed.
7.1.6.2 Timer off: Unit starts, timer indicator lights up; when reaching time setting, the indicator goes out,
unit enters shut down mode, and sleep function can be set. If timer off and sleep are set synchronously, the
one which time is short run first. Executing shutdown instruction clear timer and sleep function.
7.1.6.3 Timer on and timer off can be set synchronously.
7.1.7 Sleep function: the timer indicator lights up
7.1.7.1 In cooling/defrosting mode, the temp. setting increases 1 one hour later after start up. After
17

7.1.7.2
7.1.2.3
7.1.8 Emergency switch input:
●
7.1.8.1
7.1.8.2
7.1.8.3
7.1.8.4
7.1.9 Test run:
7.1.9.1
7.1.9.2
7.1.10 The memory function of power down
close.
6hours
1 hour
1 hour
Ts Sleep OFF T(hour)
Ts+1
Ts+2
T( )
18