Hisense AST-09UW4RXETQ00B Technical manual

Thank you very much for purchasing this Air Conditioner. Please
read this use and installation instructions carefully before installing
and using this appliance and keep this manual for future reference.
ENGLISH 意大利文 ESPAÑOL PORTUGUÊS
ITALIANO

Product Model
List of Product Models:
Hisense factory model Hisense EU model EU indoor model EU outdoor model
AST-09UW4RXETQ00B TQ25XE0B TQ25XE0BG TQ25XE0BW
AST-12UW4RXETQ00B TQ35XE0B TQ35XE0BG TQ35XE0BW
AST-18UW4RBATQ00A TQ50BA0A TQ50BA0AG TQ50BA0AW
AST-24UW4RDBTQ00A TQ70DB0A TQ70DB0AG TQ70DB0AW
AST-09UW4RXETQ00B TQ25XE0C TQ25XE0CG TQ25XE0CW
AST-12UW4RXETQ00B TQ35XE0C TQ35XE0CG TQ35XE0CW
AST-18UW4RBATQ00A TQ50BA0B TQ50BA0BG TQ50BA0BW
AST-24UW4RDBTQ00A TQ70DB0B TQ70DB0BG TQ70DB0BW
AST-09UW4RVEDJ00A DJ25VE00A DJ25VE0AG DJ25VE0AW
AST-12UW4RVEDJ00A DJ35VE00A DJ35VE0AG DJ35VE0AW
AST-18UW4RXADJ00A DJ50XA00A DJ50XA0AG DJ50XA0AW
AST-24UW4RBBDJ00B DJ70BB00B DJ70BB0BG DJ70BB0BW
AST-09UW4RVEDJ00A DJ25VE00B DJ25VE0BG DJ25VE0BW
AST-12UW4RVEDJ00A DJ35VE00B DJ35VE0BG DJ35VE0BW
AST-18UW4RXADJ00A DJ50XA00B DJ50XA0BG DJ50XA0BW
AST-24UW4RBBDJ00B DJ70BB00C DJ70BB0CG DJ70BB0CW
AS-09UW4RYRCA01A CA25YR1A CA25YR1AG CA25YR1AW
AS-12UW4RYRCA01A CA35YR1A CA35YR1AG CA35YR1AW
AST-18UW4RXSCA01 CA50XS1A CA50XS1AG CA50XS1AW
AST-24UW4RBTCA01 CA70BT1A CA70BT1AG CA70BT1AW
AS-09UW4RYRCB01A CB25YR1A CB25YR1AG CB25YR1AW
AS-12UW4RYRCB01A CB35YR1A CB35YR1AG CB35YR1AW
AST-18UW4RXSCB01 CB50XS1A CB50XS1AG CB50XS1AW
AST-24UW4RBTCB01 CB70BT1A CB70BT1AG CB70BT1AW
AS-09UW4RYRKB01A KB25YR1A KB25YR1AG KB25YR1AW
AS-12UW4RYRKB01A KB35YR1A KB35YR1AG KB35YR1AW
AST-18UW4RXSKB01 KB50XS1A KB50XS1AG KB50XS1AW
AST-24UW4RBTKB01 KB70BT1A KB70BT1AG KB70BT1AW
AS-09UW4RYRKG01A KG25YR1A KG25YR1AG KG25YR1AW
AS-12UW4RYRKG01A KG35YR1A KG35YR1AG KG35YR1AW
AST-18UW4RXSKG01 KG50XS1A KG50XS1AG KG50XS1AW
AS-09UR4RYDCA01 DC25YD01 DC25YD01G DC25YD01W
AS-12UR4RYDCA01 DC35YD01 DC35YD01G DC35YD01W

Contents
3
1
13
14
15
16
17
17
13
Safety instructions
Preparation before use
Safety Precautions
Installation instructions
Installation diagram
Select the installation locations
Connecting of the cable
Wiring diagram
Outdoor unit installation
Air purging
4

1
Safety instructions
1. To guarantee the unit work normally, please read the manual carefully before
installation, and try to install strictly according to this manual.
2. Do not let air enter the refrigeration system or discharge refrigerant when moving the
air conditioner.
6. After installing, the consumer must operate the air conditioner correctly
according to this manual, keep a suitable storage for maintenance and moving of
the air conditioner in the future.
5. There must be an air-break switch.
4. Check the connecting cables and pipes carefully, make sure they are correct and firm
before connecting the power of the air conditioner.
7. Fuse of indoor unit: T 3.15A 250VAC or T 5A 250VAC. Please refer to the screen
printing on the circuit board for the actual parameters, which must be consistent with the
parameters on the screen printing.
8. For 7k 12k models, f T 15A 250VAC or T 20A 250VAC.
refer to the screen printing on the circuit board for the actual parameters, which must be
consistent with the parameters on the screen printing.
~ use of outdoor unit: Please
3. Properly ground the air conditioner into the earth.
10. For 24k models, f T 30A 250VAC . use of outdoor unit:
12. Warning: Risk of electric shock can cause injury or death: Disconnect all
remote electric power supplies before servicing .
11. The installation instructions for appliances that are intended to be permanently
connected to fixed wiring, and have a leakage current that may exceed 10 mA,
shall state that the installation of a residual current device (RCD) having a rated
residual operating current not exceeding 30 mA is advisable.
13. The maximum length of the connecting pipe between the indoor unit and
outdoor unit should be less than 5 meters. It will affect the efficiency of the air
conditioner if the distance longer than that length.
15. This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or instruction concerning use
of the appliance in a safe way and understand the hazards involved. Children shall
not play with the appliance. Cleaning and user maintenance shall not be made by
children without supervision.
16.The batteries in remote controller must be recycled or disposed of properly.
Disposal of Scrap Batteries --- Please discard the batteries as sorted municipal
waste at the accessible collection point.
9. For models, f 20A 250VAC. 18k use of outdoor unit: T
14. This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning use
of the appliance by a person responsible for their safety.Children should be
supervised to ensure that they do not play with the appliance.

2
Safety instructions
21. The appliance shall not be installed in the laundry.
19. The appliance shall be installed in accordance with national wiring regulations.
20. The air conditioner must be installed by professional or qualified persons.
18. If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
22. Regarding to installation, please refer to section “Installation instructions”.
23. Regarding to maintenance, please refer to section “Maintenance”.
24. For models using R32 refrigerant, piping connection should be conducted on
outdoor side.
17. If the appliance is fixed wiring, the appliance must be fitted with means for
disconnection from the supply mains having a contact separation in all poles that
provide full disconnection under over voltage category III conditions, and these
means must be incorporated in the fixed wiring in accordance with the wiring rules.

3
Preparation before use
The air conditioner has an Auto-Restart function.
Each time after the remote control is replaced with new batteries or is energized, auto presetting
heat pump.If the air conditioner you purchased is a Cooling Only one, heat pump remote controller can also be used.
remote control
Remote Control presetting
Before using the air conditioner, be sure to check and preset the following.
Auto Restart Presetting
Hold down any button on remote control to activate the back light. It automatically shuts off 10 seconds later.
Note: Back-light is an optional function.
Back-light function (optional) of Remote Control
This appliance is made of recyclable or re-usable material. Scrapping must be carried out in
compliance with local waste disposal regulations. Before scrapping it, make sure to cut off the
mains cord so that the appliance cannot be re-used.
For more detailed information on handling and recycling this product, contact your local authorities
who deal with the separate collection of rubbish or the shop where you bought the appliance.
SCRAPPING OF APPLIANCE
This appliance is marked according to the European Directive 2012/19/EC,
Waste Electrical and Electronic Equipment (WEEE).
This marking indicates that this product should not be disposed
with other household wastes throughout the EU. To prevent possible
harm to the environment or human health from uncontrolled waste
disposal,recycle it responsibly to promote the sustainable reuse of
material resources. To return your used device, please use the return
and collection systems or contact the retailer where the product was
purchased. They can take this product for environmental safe recycling.
Note
Preset
Safeguarding the environment
When charging refrigerant into the system, make sure to charge in liquid state,if the
refrigerant of the appliance is R32.Otherwise, chemical composition of refrigerant
(R32) inside the system may change and thus affect performance of the air conditioner.
According to the character of
of the tube is very high, so be sure to be careful when you install and repair the
appliance.
refrigerant (R32,the value of GWP is 675), the pressure
If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
Installation of this product must be done by experienced service technicians
professional installers only in accordance with this manual.
The temperature of refrigerant circuit will be high, please keep the
interconnection cable away from the copper tube.
For the multi system, the refrigerant refer to the multi outdoor unit.

Safety precautions
Symbols in this Use and Care Manual are interpreted as shown below.
Be sure not to do.
Pay attention to such a situation.
Grounding is essential.
Warning: Incorrect handling could
cause a serious hazard, such as death,
serious injury, etc.
4
Do not use the power supply
circuit breaker or pull off the plug
to turn it off during operation.
This may cause a fire due to
spark, etc.
Keep the power supply circuit
breaker or plug from dirt.
Connect the power supply cord
to it firmly and correctly, lest an
electric shock or a fire break out
due to insufficient contact.
Use correct power supply in
accordance with the rating plate
requirement. Otherwise, serious
faults or hazard may occur or a
fire maybe break out.
Do not knit, pull or press the power
supply cord, lest the power supply cord
be broken. An electric shock or fire is
probably caused by a broken power
supply cord.
Never insert a stick or similar obstacle
to the unit. Since the fan rotates at high
speed, this may cause an injury.
Do not repair the appliance by yourself.
If this is done incorrectly, it may cause
an electric shock, etc.
Turn off the appliance by remote
control firstly before cutting off
power supply if malfunction occurs.
It is harmful to your health if the cool
air reaches you for a long time. It is
advisable to let the air flow be
deflected to all the room.
Prevent the air flow from reaching
the gas burners and stove.
Do not touch the operation buttons
when your hands are wet.
Do not put any objects on the outdoor
unit.
It is the user's responsibility to
make the appliance be grounded
according to local codes or
ordinances by a licenced
technician.
OFF
OFF
ON
ON
ON
OFF
MODE
SMART
QUIET DIM MER
ECONOM Y
FEEL
FAN SPEED
CLOCK
TIMER ON TIMER OFF
SLEEP
TEMP.
TEMP.
SUPER

Safety precautions
Precautions for using R32 refrigerant
5
The basic installation work procedures are the same as the conventional refrigerant
(R22 or R410A). However, pay attention to the following points:
CAUTION
1. Transport of equipment containing flammable refrigerants
Compliance with the transport regulations
2. Marking of equipment using signs
Compliance with local regulations
3. Disposal of equipment using flammable refrigerants
Compliance with national regulations
4. Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's
instructions.
5. Storage of packed (unsold) equipment
Storage package protection should be constructed such that mechanical
damage to the equipment inside the package will not cause a leak of the
refrigerant charge.
The maximum number of pieces of equipment permitted to be stored together
will be determined by local regulations.
6. Information on servicing
6-1 Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimised. For repair
to the refrigerating system, the following precautions shall be complied with
prior to conducting work on the system.
6-2 Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the
risk of flammable gas or vapour being present while the work is being
performed.
6-3 General work area
All maintenance staff and others working in the local area shall be instructed
on the nature of work being carried out. Work in confined spaces shall be
avoided.
The area around the workspace shall be sectioned off. Ensure that the
conditions within the area have been made safe by control of flammable
material.
6-4 Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and
during work, to ensure the technician is aware of potentially flammable
atmospheres.
Ensure that the leak detection equipment being used is suitable for use with
flammable refrigerants, i.e. non-sparking, adequately sealed or intrinsically
safe.

Safety precautions
6
CAUTION
6-5 Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any
associated parts, appropriate fire extinguishing equipment shall be available
to hand.
Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
6-6 No ignition sources
No person carrying out work in relation to a refrigeration system which involves
exposing any pipe work that contains or has contained flammable refrigerant
shall use any sources of ignition in such a manner that it may lead to the risk of
fire or explosion.
All possible ignition sources, including cigarette smoking, should be kept
sufficiently far away from the site of installation, repairing, removing and
disposal, during which flammable refrigerant can possibly be released to the
surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to
make sure that there are no flammable hazards or ignition risks. “No Smoking”
signs shall be displayed.
6-7 Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before
breaking into the system or conducting any hot work.
A degree of ventilation shall continue during the period that the work is carried
out.
The ventilation should safely disperse any released refrigerant and preferably
expel it externally into the atmosphere.
6-8 Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification.
At all times the manufacturer's maintenance and service guidelines shall be
followed. If in doubt consult the manufacturer's technical department for
assistance.
The following checks shall be applied to installations using flammable
refrigerants:
– The charge size is in accordance with the room size within which the
refrigerant containing parts are installed;
– The ventilation machinery and outlets are operating adequately and are not
obstructed;
– If an indirect refrigerating circuit is being used, the secondary circuit shall be
checked for the presence of refrigerant;
– Marking to the equipment continues to be visible and legible. Markings and
signs that are illegible shall be corrected;
– Refrigeration pipe or components are installed in a position where they are
unlikely to be exposed to any substance which may corrode refrigerant
containing components, unless the components are constructed of materials

Safety precautions
7
CAUTION
which are inherently resistant to being corroded or are suitably protected
against being so corroded.
6-9 Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures.
If a fault exists that could compromise safety, then no electrical supply shall be
connected to the circuit until it is satisfactorily dealt with.
If the fault cannot be corrected immediately but it is necessary to continue
operation, an adequate temporary solution shall be used.
This shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
– That capacitors are discharged: this shall be done in a safe manner to avoid
possibility of sparking;
– That there no live electrical components and wiring are exposed while
charging, recovering or purging the system;
– That there is continuity of earth bonding.
7. Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be
disconnected from the equipment being worked upon prior to any removal of
sealed covers, etc.
If it is absolutely necessary to have an electrical supply to equipment during
servicing, then a permanently operating form of leak detection shall be located
at the most critical point to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on
electrical components, the casing is not altered in such a way that the level of
protection is affected.
This shall include damage to cables, excessive number of connections,
terminals not made to original specification, damage to seals, incorrect fitting
of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no
longer serve the purpose of preventing the ingress of flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer's
specifications.
NOTE:
The use of silicon sealant may inhibit the effectiveness of some types of
leak detection equipment. Intrinsically safe components do not have to be
isolated prior to working on them.
8. Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit
without ensuring that this will not exceed the permissible voltage and current
permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while