Hisense AST-12UW4RXXQA 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 NEDERLANDS FRANÇAIS РУССКИЙ ЯЗЫК DEUTSCH
ITALIANO
Questo manuale d’istruzione è fornito da trovaprezzi.it. Scopri tutte le offerte per Hisense
AST-12UW4RXXQA o cerca il tuo prodotto tra le migliori offerte di Climatizzazione

safety instructions 1
Safety Precautions 3
Indoor unit 4
Outdoor unit 4
Display introduction 5
Identification of parts 4
Maintenance 6
Protection 7
Troubleshooting 8
Select the installation locations 10
Indoor unit installation 11
Outdoor unit installation 15
Installation diagram 9
Air purging 15
Wiring diagram 14
Installation instructions 9
Contents
2
Preparation before use
Remote controller operating instructions.See"remote controller
instructions".

1
Safety instructions
To guarantee the unit work normally, please read the manual carefully before installation,
and try to install strictly according to this manual.
Do not let air enter the refrigeration system or discharge refrigerant when moving the
air conditioner.
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.
There must be an air-break switch.
Check the connecting cables and pipes carefully, make sure they are correct and firm
before connecting the power of the air conditioner.
Fuse of indoor unit: T 3.15A 250V.
For 7k 12k models ，f T 15A 250V or T 20A 250V . ~ use of outdoor unit:
For 21k 30k models ，f T 30A 250V . ~ use of outdoor unit:
Properly ground the air conditioner into the earth.
Warning: Risk of electric shock can cause injury or death: Disconnect all remote
electric power supplies before servicing .
A residual current device(RCD)with the rating of above 10mA shall be incorporated
in the fixed wiring according to the national rule
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.
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 maintenanceshall not be made by
children without supervision.
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.
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.
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.
The appliance shall not be installed in the laundry.
The appliance shall be installed in accordance with national wiring regulations.
The air conditioner must be installed by professional or qualified persons.
For 14k models ，f 20A 250V . ~18k use of outdoor unit: T

2
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 2002/96/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 R410A.Otherwise, chemical composition of
refrigerant (R410A) inside the system may change and thus affect performance of
the air conditioner.
According to the character of
pressure of the tube is very high, so be sure to be careful when you install and repair
the appliance.
refrigerant (R410A,the value of GWP is 1975), the
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.
The air conditioner must be installed by a professional engineer.
The temperature of refrigerant circuit will be high, please keep the
interconnection cable away from the copper tube.

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.
3
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 DIMMER
ECONOM Y
FEEL
FAN SPEED
CLOCK
TIMER ON TIMER OFF
SLEEP
TEMP.
TEMP.
SUPER

The figures in this manual are based on the external view of a standard model.
Consequently, the shape may differ from that of the air conditioner you have selected.
Air Intake
Air Outlet
Air Outlet
Louver
Vertical Adjustment
Louver
Horizontal Adjustment
Air Filter
Remote Controller
Connection Cord
Pipes and Power
Drain Hose
Emergency Panel
Display Panel
Note: Condensate water drains
at COOLING or DRY operation.
Identification of parts
4
Indoor unit
Outdoor unit
Air Intake
Front Panel
ON
OFF
MODE
SMART
QUIETDIMM ER
ECONO MY
FEEL
SUPER
FAN SPEED
CLOCK
TIMER ON
TIMER O FF
SLEEP
TEMP.
TEMP.

The symbols may be different from these models, but the functions are similar.
Display introduction
5
1 2 3 4 5 9
VG/VL series
Display set temperature.
It shows FC after 200 hours of usage as reminder to clean the filter.
After filter cleaning press the filter reset button located on the indoor unit behind the front
panel in order to reset the display.(optional)
Temperature indicator
Timer
Comp.
Run
Sleep
1
Running indicator
It lights up when the AC is running.
It flashes during defrosting.
Timer indicator
It lights up during set time.
Sleep indicator
It lights up in sleep mode.
Compressor indicator
It lights up when the compressor is on.
Signal Receptor
Super indicator
It lights up in super mode.
2
3
4
5
9
6
Mode indicator
Heating displays orange,others display white
7
Fan speed indicator 8

Display introduction
5
The symbols may be different from these models, but the functions are similar.
12
34
5
9
VT series
SE series
1 23 45
9
SF series/DG(Right side)
1 2 3 4 5 9

Display introduction
The symbols may be different from these models, but the functions are similar.
5
12
34
5
9
Timer Comp. Run Sleep
UL series
UQ series
UP series
9
Timer Comp. Run Sleep
12
34
5
12
34
5
9

Display introduction
The symbols may be different from these models, but the functions are similar.
5
NT series
VQ/TE/TF/DA/DG(Middle)/DH series
2
34
1 23 45
4
3
2
1
2
34
5
9
NS/DE series
9
9

Display introduction
The symbols may be different from these models, but the functions are similar.
5
VM series
9
22
34
4
1
5
NM/DF series NK series
2
3
5
4
1
9
6
4
2
3
9
TA/TC series
2
3
9
1

The symbols may be different from these models, but the functions are similar.
5
Display introduction
Emergency button 10
ON/OFF
VC series
12
34
5
Timer Comp. Run Sleep
9
SA/TD/TG/DB/DC series
91
2
34
To let the AC run or stop by pressing the button.
SC series
728
1
10

6
Maintenance
It is necessary to clean the air filter
after using it for about 100 hours.
Front panel maintenance
Air filter maintenance
Never use volatile substance
such as gasoline or polishing
powder to clean the appliance.
Clean and reinstall the air filter.
Close the front panel again.
shock!
Electric
Dangerous!
Wipe with a soft
and dry cloth.
Use soft moisture cloth
to clean if the front panel
is very dirty;
Never sprinkle water onto the indoor
unit Reinstall and shut the front panel.
Reinstall and shut the front panel by
pressing position "b" downward.
If the dirt is conspicuous,
wash it with a solution of
detergent in lukewarm water.
After cleaning, dry well in
shade.
Clean the air filter every two weeks
if the air conditioner operates in an
extremely dusty environment.
Stop the appliance and remove
the air filter.
1
23
1.Open the front panel.
2.Press the handle of the filter gently
from the front.
3. Grasp the handle and slide out the filter.
soft cloth to
clean it.
Use a dry and
bb
Turn off the appliance
first before disconnecting
from power supply.
Cut off the power supply
Grasp position "a" and
pull outward to remove the
front panel.
a
a

7
Protection
Operating condition
The protective device maybe trip and stop the appliance in the cases listed below.
HEATING
o
Outdoor air temperature is over 24 C COOLING
DRY
o
Outdoor air temperature is below -10 C
o
Room temperature is over 27 C
o
Outdoor air temperature is over *43 C
o
Room temperature is below 21 C
o
Room temperature is below 18 C
Noise pollution
Install the air conditioner at a place that can bear its weight in order to operate more quietly.
Install the outdoor unit at a place where the air discharged and the operation noise would not annoy
your neighbors.
Do not place any obstacles in front of the air outlet of the outdoor unit lest it increases the noise level.
Features of protector
If all operation has stopped, press ON/OFF button again to restart, Timer should be set again if it has
been canceled.
The protective device will work at following cases.
Restarting the unit at once after operation stops or changing mode during operation, you need to wait for
3 minutes.
Connect to power supply and turn on the unit at once, it may start 20 seconds later.
Features of HEATING mode
Preheat
Defrost
At the beginning of the HEATING operation, the airflow from the indoor unit is discharged 2-5 minutes later.
In HEATING operation the appliance will defrost (de-ice) automatically to raise efficiency.
This procedure usually lasts 2-10 minutes. During defrosting, fans stop operation.
After defrosting completes, it returns to HEATING mode automatically.
Note: Heating is NOT available for cooling only air conditioner models.
1.
2.
*For Tropical (T3) Climate condition models, the temperature point is 55℃instead of 43℃.
The temperature of some products is allowed beyond the range. In specific situation, please consult the merchant.
If the air conditioner runs in COOLING or DRY mode withdoor or window opened for a long time when relative
humidity is above 80%,dew may drip down from the outlet.

The following cases may not always be a malfunction, please check it before asking for service.
8
Troubleshooting
Trouble Analysis
Does not run
No cooling or
heating air
Ineffective control
Does not operate
immediately
Peculiar odor
A sound of
flowing water
Cracking sound is
heard
Spray mist from
the outlet
The compressor indicator(red) lights on constantly,
and indoor fan stops.
The unit is shifting from heating mode to defrost.
The indicator will lights off within ten minutes and
returns to heating mode.
Is the air filter dirty?
Are the intakes and outlets of the air
conditioner blocked？
Is the temperature set properly？
don't run
If the protector trip or fuse is blown.
If the plug is not properly plugged.
If batteries in the remote controller exhausted.
Please wait for 3 minutes and start again,
protector device may be preventing unit to work.
.
If strong interference(from excessive static
electricity discharge, power supply voltage
abnormality)presents, operation will be
abnormal. At this time, disconnect from the
power supply and connect back 2-3 seconds later.
Changing mode during operation, 3 minutes
will delay.
This odor may come from another source
such as furniture, cigarette etc, which is
sucked in the unit and blows out with the air.
Caused by the flow of refrigerant in the
air conditioner, not a trouble.
Defrosting sound in heating mode.
The sound may be generated by the expansion
or contraction of the front panel due to change
of temperature.
Mist appears when the room air becomes
very cold because of cool air discharged
from indoor unit during COOLING or DRY
operation mode.

9
Distance from ceiling
Distance from wall
should be over 50mm
Distance from the wall
Air intake distance from
the wall should be
over 250mm
Air intake distance from the wall
over 250mm
air outlet distance from the wall
should be over 500mm
should be over 200 mm
should be over 50mm
Distance from floor
over 2500mm.
should be
should be over 250mm
Installation instructions
Installation diagram
Installation must be performed in accordance with
the national wiring standards by authorized personnel only.
Above figure is only a simple presentation
of the unit, it may not match the external
appearance of the unit you purchased.

Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Pipe length is
15 meters Max.
Pipe length is
15 meters Max.
be less than 5m
be less than 5m
Height should
Height should
10
Installation instructions
Select the installation location
Location for Installing Outdoor Unit
Where it is convenient to install and well ventilated.
Avoid installing it where flammable gas could leak.
Keep the required distance apart from the wall.
The distance between Indoor and outdoor unit should
be 5 meters and can go up to maximum 15 meters
with additional refrigerant charge.
Keep the outdoor unit away from greasy dirt,
vulcanization gas exit.
Avoid installing it by the roadside where there is a risk of
muddy water.
A fixed base where it is not subject to increased operation
noise.
Where there is not any blockage of the air outlet.
Location for Installing Indoor Unit
Where there is no obstacle near the air outlet and air can be
easily blown to every corner.
Where piping and wall hole can be easily arranged.
Keep the required space from the unit to the ceiling and wall
according to the installation diagram on previous page.
Where the air filter can be easily removed.
Keep the unit and remote controller 1m or more apart from
television, radio etc.
keep as far as possible from fluorescent lamps.
Do not put anything near the air inlet to obstruct it from air
absorption.
Install on a wall that is strong enough to bear the weight of the unit.
Install in a place that will not increase operation noise and vibration.
Keep away from direct sunlight and heating sources. Do not place
flammable materials or combustion apparatuses on top of the unit.
Avoid installing under direct sunlight, in an aisle or sideway,
or near heat sources and ventilation fans. Keep away from
flammable materials, thick oil fog, and wet or uneven places.
If the height or pipe length is out of the scope of the table, please consult the merchant.
Model
7K~18K 515 520
Max. Allowable Tubing
Length at Shipment (m)
Limit of Tubing
Length (m)
Limit of Elevation
Difference H (m)
Required amount of
additional refrigerant (g/m)
21K 25K~
30K
515 530
515 540

Piping direction
1
2
3
4
trough
Note: When installing the pipe at the directions
1,2 or 4, saw the corresponding unloading piece
off the indoor unit base.
Unloading
piece
Saw the unloading piece
off along the trough
11
Installation instructions
Indoor
Outdoor
Wall hole sleeve
( hard polythene tube
prepared by user)
5mm
(tilt downward)
After connecting the piping , install the drain hose. Then connect the power cords. After connecting,
wrap the piping, cords and drain hose together with thermal insulation materials.
Indoor unit installation
Put the piping (liquid and gas pipe) and cables through the wall hole from outside or put them through
from inside after indoor piping and cables connection is complete to connect to the outdoor unit.
Decide whether to saw the unloading piece off in accordance with the piping direction.(as shown below)
3. Indoor Unit Piping Installation
Install a sleeve through the wall hole to keep the wall
tidy and clean.
Drill a hole in the wall. The hole should tilt a little
downward toward outside.
Decide the position of the hole for piping according to the
location of mounting plate.
2. Drill a Hole for Piping
. Keep the mounting plate horizontal with a horizontal ruler or dropping line.
Drill holes of 32mm in depth on the wall for fixing the plate.
Insert the plastic plugs to the hole, fix the mounting plate with tapping screws.
Inspect if the mounting plate is well fixed. Then drill a hole for piping.
1. Installing the Mounting Plate
Decide an installing location for the mounting plate according to the indoor unit location and piping direction.
Mounting plate
Tapping screw
Note: The shape of your mounting plate may be different from the one above, but the installation method is similar.
Note: As the above figure shown, the six holes matched with tapping screw on the mounting plate must be used to
fix the mounting plate, the others are prepared.

12
Installation instructions
Piping Joints Thermal Insulation:
Wrap the piping joints with thermal
insulation materials and then wrap
with a vinyl tape.
Piping Thermal Insulation:
a. Place the drain hose under the piping.
b. Insulation material uses polythene foam over 6mm in thickness.
Note: Drain hose is prepared by user.
Do not arrange the drain pipe in a way that leaves it twisted, sticking
out or waving around. Do not immerse the end of it in water.
If an extension drain hose is connected to the drain pipe, make sure
to insulated when passing along the indoor unit.
When the piping is directed to the right, piping, power
Cord and drain pipe should be thermal insulated and
fixed onto the back of the unit with a piping fixer.
Thermal insulation
wrapped with vinyl type
A. Insert the pipe fixer to the slot. B. Press to hook the pipe fixer onto the base.
Base Base Base
Piping fixer Piping fixer Hook here
Insert here
drain
hose
drain
hose
large
pipe
large
pipe
small
pipe
small
pipe
Small
pipe
Large pipe Thermal insulation
tube
Power cord
Drain hose
(prepared by user)
b. Pre-tighten them with fingers at first, then use the wrenches.
a. Connect indoor unit pipes with two wrenches. Pay special attention
to the allowed torque as shown below to prevent the pipes, connectors
and flare nuts from being deformed and damaged.
Piping Connection:
Pipe size
Model
Liquid Side ( 1/4 inch) φ6mm or
7,8,9,10,12,14,18K
12K*,14K,18K
18K*,21,22,24,25,30K
18K*,21,22,24,25,30K
7,8,9,10,12K
15~20N·m
17mm 0.5mm
0.6mm
0.6mm
0.6mm
0.6mm
22mm
24mm
22mm
27mm
30~35N·m
30~35N·m
50~55N·m
60~65N·m
Liquid Side ( 3/8 inch)φ9.53mm or
Gas Side ( inch)φ12mm or 1/2
Gas Side ( 3/8 inch)φ9.53mm or
Gas Side ( 5/8 inch)φ16mm or
Torque Nut width Min.thickness
*The unit of 12K* is bigger than the unit of 12K.The unit of 18K* is bigger than the unit of 18K.

13
4. Connecting of the Cable
Outdoor Unit
Indoor Unit
1) Remove the access door from the unit by loosening
Connect the power cord to the indoor unit by connecting
the wires to the terminals on the control board individually
in accordance with the outdoor unit connection.
the screw. Connect the wires to the terminals on the
control board individually as follows.
2) Secure the power cord onto the control
board with cable clamp.
3) Reinstall the access door to the original position
with the screw.
4) Use a recognized circuit breaker for 24K model between
the power source and the unit. A disconnecting device to
adequately disconnect all supply lines must be fitted.
Note: For some models, it is necessary to remove the cabinet to
connect to the indoor unit terminal.
Access door
Terminal(inside)
Outdoor unit
Installation instructions
Caution:
1. Never fail to have an individual power circuit specifically for the air conditioner. As for the method of
wiring, refer to the circuit diagram posted on the inside of the access door .
2. Comfirm that the cable thickness is as specified in the power source specification.
3. Check the wires and make sure that they are all tightly fastened after cable connection.
4. Be sure to install an earth leakage circuit breaker in wet or moist areas.
The figures in this manual are based on the external
view of a standard model. Consequently, the shape
may differ from that of the air conditioner you have
selected.
Cable Specifications
Attention:
The plug must be accessible even after the installation of the appliance in case there is a need to
disconnect it. If not possible, connect appliance to a double-pole switching device with contact
2
separation of at least 3 mm placed in an accessible position even after installation.
NOTE:
K* means the this model comes from indoor unit.power supply of
Capacity (Btu/h)
7K~12K
H07RN-FH05VV-F
7 12K*~ K*
Power connecting cord
Power cord
Type Type
Normal cross
- sectional area
Normal cross
- sectional area
2
1.0/1.5mm X4
2
1.0/1.5mm X3
H07RN-FH05VV-F 2
2.5mm X3 2
2.5mm X4
2
0.75mm X4
H07RN-F
2
2.5mm X3
H07RN-F
2
2.5mm X3
H07RN-F 2
2.5mm X5
H07RN-F
H07RN-F
2
1.5/2.5mm X3
H05VV-F 2
1.5mm X4
21K*~30K*
21K~30K
14K~18K
H07RN-F H07RN-F 2
1.0 mm X5/1.5
2
1.0 mm/1.5 X3
14K*~ K*18
H07RN-F 2
1.5mm X3 H07RN-F 2
1.5mm X5
Chassis
Cabinet
Front panel
Terminal (inside)
Indoor unit