INVENTOR L2VI-18 User manual

Owner’s Manual
Thank you for choosing INVENTOR air
conditioning system. For correct use of
this unit, please read this manual
carefully and keep it for future
reference.
L2VI-18
L2VI-24
English
Indoor Unit
66129918209

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 un-
controlled waste disposal, recycle it responsibly to promote the sustainable reuse of mate-
rial 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 envi-
ronmental safe recycling.
R410A(R32/125: 50/50): 2087.5
Content
Operation Notices
Precautions............................................................................................................1
Parts Name............................................................................................................6
ScreenOperation Guide
Buttons on remote controller
................................................................................. 8
8
Introduction for buttons on remote controller.........................................................9
Introduction for special function ......................................................12
Operation guide...................................................................................................13
Replacement of batteries in remote controller.....................................................14
Emergency operation .......................................................................................... 15
Maintenance
Clean and Maintenance.......................................................................................15
Malfunction
Malfunction analysis ............................................................................................18
Installation Notice
Installation dimension diagram............................................................................22
Tools for installation.............................................................................................23
Selection of installation location ..........................................................................23
Requirements for electric connection .................................................................. 24
Installation
Installation of indoor unit......................................................................................25
Check after installation ........................................................................................30
Test and operation
Test operation......................................................................................................30
Attachment
.........................................................................31
Pipe expanding method
Configuration of connection pipe
....................................................................................... 33
Introduction for icons on display screen ................................................................
................

1
Precautions
Do not connect air conditioner to multi-purpose socket.
This appliance can be used by children aged from 8
Operation and Maintenance
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.
Do not spray water on indoor unit. It may cause electric
shock or malfunction.
Otherwise, it may cause fire hazard.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by
children without supervision.
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.
Do not wash the air conditioner with water to avoid
electric shock.
After removing the filter, do not touch fins to avoid injury.
Do not use fire or hair dryer to dry the filter to avoid
deformation or fire hazard.
Do disconnect power supply when cleaning air
conditioner. Otherwise, it may cause electric shock.
WARNING

Do not block air outlet or air inlet. It may cause
malfunction.
remote controller may be broken.
●Power cord is overheating or damaged.
●There’s abnormal sound during operation.
●Circuit break trips off frequently.
●Air conditioner gives off burning smell.
●Indoor unit is leaking.
contact the dealer or qualified professionals for service.
When turning on or turning off the unit by emergency
operation switch, please press this switch with an insulating
object other than metal.
outlet. It may cause personal injury or damage.
2
Precautions
conditioner and disconnect power immediately, and then
If the air conditioner operates under abnormal conditions,
it may cause malfunction, electric shock or fire hazard.
Do not spill water on the remote controller, otherwise the
electric shock or damage. Please contact dealer when
you need to repair air conditioner.
Do not repair air conditioner by yourself. It may cause
objects. It may cause damage or personal injury.
Do not step on top panel of outdoor unit, or put heavy
When below phenomenon occurs, please turn off air
Do not extend fingers or objects into air inlet or air
Maintenance must be performed by qualified
professionals. Otherwise, it may cause personal injury
or damage.
WARNING

Do install the circuit break. If not, it may cause malfunction.
of at least 3mm in all poles should be connected in fixed
wiring.
magnet buckle and heating buckle function, it can protect
the circuit-short and overload.
power supply circuit and circuit break.
3
Precautions
note the following table. Air switch should be included
Make sure the power supply matches with the
requirement of air conditioner. Unstable power supply or
incorrect wiring or malfunction. Please install proper power
supply cables before using the air conditioner.
An all-pole disconnection switch having a contact separation
Must follow the electric safety regulations when installing
the unit.
grounding wire of power socket.
Properly connect the live wire, neutral wire and
any work related to electricity and safety.
Be sure to cut off the power supply before proceeding
Including an circuit break with suitable capacity, please
Air Conditioner should be properly grounded. Incorrect
Don't use unqualified power cord.
grounding may cause electric shock.
According to the local safety regulations, use qualified
Installation must be performed by qualified professionals.
Otherwise, it may cause personal injury or damage.
Attachment
WARNING

Installation must be performed in accordance with the
persons in order to avoid a hazard.
must be properly grounding with specialized grounding
device by a professional. Please make sure it is always
grounded effectively, otherwise it may cause electric shock.
The appliance must be positioned so that the plug is
accessible.
If the length of power connection wire is insufficient, please
contact the supplier for a new one. Avoid extending the
wire by yourself.
All wires of indoor unit and outdoor unit should be
connected by a professional.
national wiring regulations.
requirement of NEC and CEC by authorized personnel
only．
4
Precautions
wire, which can't be used for other purposes.
The grounding resistance should comply with national
electric safety regulations.
The air conditioner is the first class electric appliance. It
keep the interconnection cable away from the copper
tube.
The temperature of refrigerant circuit will be high, please
the manufacturer, its service agent or similarly qualified
If the supply cord is damaged, it must be replaced by
The yellow-green wire in air conditioner is grounding
The appliance shall be installed in accordance with
Do not put through the power before finishing installation.
WARNING

The indoor unit should be installed close to the wall
reachable after finishing installation.
far away from animals or plants. If it is unavoidable,
please add the fence for safety purpose.
5
Precautions
place, only the qualified person can perform the work.
Otherwise, it may cause personal injury or damage.
If you need to relocate the air conditioner to another
must be installed in the line.
For the air conditioner without plug, an circuit break
Select a location which is out of reach for children and
For the air conditioner with plug, the plug should be
Working temperature range
Indoor side DB/WB(°C) Outdoor side DB/WB(°C)
Maximum cooling 32/23 43/26
Maximum heating 27/- 24/18
●
The operating temperature range (outdoor temperature) for cooling is -15℃~43℃;
Heating temperature range for the model without electric heating belt for chassis
is -15℃~24 Heating temperature range for the model with electric heating belt
for chassis is -20℃~24℃.
NOTICE:
WARNING

6
(Display content or position may be different from above
graphics, please refer to actual products)
Parts Name
Indoor Unit
remote control
air inlet
panel
aux.button
horizontal louver
air outlet
heating
indicator temp. indicator
cooling
indicator power indicator receiver window
drying
indicator
display
NOTICE:
Actual product may be different from above graphics, please refer to actual
products.

Parts Name
Display content or position may be different from above graphics, please refer to actual
products.
Display
W R G
temp.
indicator
display
receiver
window
W R O
temp.
indicator
display
receiver
window
heating
indicator temp. indicator
cooling
indicator power indicator receiver window
drying
indicator display
For some model:
For some model:
For some model:
For some model:
heating
indicator
temp.
indicator
cooling
indicator
power
indicator
receiver
window
drying
indicator
display
G
W
R
Power LED color indicator:
Green-status-ON.
Red -status-OFF.
Mode LED color indicator:
White-W-Cool Mode-
Red-R-Heat Mode-
Green-G-Dry Mode-
O
W
R
Power LED color indicator:
Green-status-ON.
Red -status-OFF.
Mode LED color indicator:
White-W-Cool Mode-
Red-R-Heat Mode-
Orange-O-Dry Mode-
(only for heating model)
(only for heating model)
7

8
Buttons on remote controller
Introduction for icons on display screen
1
2
3
4
5
6
7
8
9
10
11
12
ON/OFF button
MODE button
- button
+ button
FAN button
TIMER ON button
X-FAN button
TEMP button
TIMER OFF button
TURBO button
13 SLEEP button
14 LIGHT button
CLOCK button
button
Turbo mode
Send signal
Set temperature
Set time
TIMER ON /
TIMER OFF
Child lock
Up & down swing
Set fan speed
Light
Temp. display type
:Set temp.
:Outdoor ambient temp. :Indoor ambient temp.
Sleep mode
Clock
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode
1
3
5
7
9
12
2
4
6
8
11
10
14
13
X-fan mode

9
Introduction for buttons on remote controller
Note:
●After putting through the power, the air conditioner will give out a sound.
Operation indictor " " is ON (red indicator). After that, you can operate the air
conditioner by using remote controller.
● Under on status, pressing the button on the remote controller, the signal icon " "
on the display of remote controller will blink once and the air conditioner will give
out a “de” sound, which means the signal has been sent to the air conditioner.
● Under off status, set temperature and clock icon will be displayed on the display
of remote controller (If timer on, timer off and light functions are set, the corre-
sponding icons will be displayed on the display of remote controller at the same
time); Under on status, the display will show the corresponding set function icons.
ON/OFF button
1
Press this button, the unit will be turned on, press it once more, the unit will be turned
off. When turning on or turning off the unit, the Timer, Sleep function will be canceled,
but the presetting time is still remained.
MODE button
2
Press this button, Auto, Cool, Dry, Fan, Heat mode can be selected circularly. Auto mode
- button
3
Presetting temperature can be decreased. Press this button, the temperature can be set up,
+ button
4
For presetting temperature increasing. Press this button, can set up the temperature, when
unit is on. Continuously press and hold this button for more than 2 seconds, the corresponding
contents will be changed rapidly, until unpress the button then send the information, ℃ ( ℉ )
is displlaying all along. In Auto mode, the temperature can not be set up, but operate this button
can send the signal. Centigrade setting range: 16-30; Fahrenheit scale setting range 61-86.
continuously press this button and hold for two seconds, the relative contents can quickly
change, until unhold this button and send the order that the
℃ ( ℉ ) signal will be displayed
all the time. The temperature adjustment is unavailable under the Auto mode, but the order
can be sent by if pressing this button.
is default while power on. Under Auto mode, the temperature will not be displayed;
Under Heat mode, the initial value is 28
℃ (82 ℉ ); Under other modes, the initial value is
25
℃ (77 ℉ ).
AUTO COOL DRY FAN HEAT
(Only for cooling and heating unit. As for cooling only unit, it won’t have any action when it receives the signal of heating
operation.)

10
Introduction for buttons on remote controller
FAN button
5
Press this button, Auto, Low, Middle, High speed can be circularly selected. After
6
Press this button, to set up swing angle, which circularly changes as below:
This is an universal use remote controller. If remote controller sends the following three
kinds of status that the swing status of main unit will be:
When the guide louver start to swing up and down, if turn off the Swing, the air guide
louver will stop at current position.
which indicates the guide louver swings up and down between that all five positions.
powered on, Auto fan speed is default.
Note: Under the Dry mode, the fan speed isn't adjustable, low fan speed is imperative,
but when operating this button, the wireless adjustable, low fan speed is imperative.
button
7
Press this button, the clock can be set up, signal blink and display. Within 5 seconds,
the value can be adjusted by pressing + or - button, if continuously press this button for
2 seconds above, in every 0.5 seconds, the value on ten place of Minute will be increased
1. During blinking, repress the Clock button, signal will be constantly displayed and it
denotes the setting succeeded. After powered on,12:00 is defaulted to display and signal
is Clock value, otherwise is Timer value.
will be displayed. If there is signal be displayed that denotes the current time value
Middle fanLow fan
AUTO
High fan
OFF
CLOCK button
8
Timer On setting: Signal “ON” will blink and display, signal will conceal, the numerical
section will become the timer on setting status. During 5 seconds blink, by pressing + or
will be increased or decreased 1 minute. Hold pressing + or - button, 2 seconds later, it
in the one place of minute, then the one place is constant, ten numbers change in the
tens place of minute at 2.5 seconds speed and carry. During 5s blink, press the Timer
button, the timer setting succeeds. The Timer On has been set up, repress the timer On
button, the Timer On will be canceled. Before setting the Timer, please adjust the Clock
to the current actual time.
quickly change, the way of change is: During the initial 2.5 seconds, ten numbers change
- button to adjust the time value of numerical section, every press of that button, the value
TIMER ON button

11
Introduction for buttons on remote controller
X-FAN button
9
Pressing X-FAN button in COOL or DRY mode, the icon is displayed and the
TEMP button
10
Press this button, could select displaying the indoor setting temperature or indoor
TIMER OFF button
11
Once press this key to enter into TIMER OFF setup, in which case the TIMER OFF
TURBO button
12
In Cool or Heat mode, press this button can turn on or turn off the Turbo function.
SLEEP button
13
Press this button, Sleep On and Sleep Off can be selected. After powered on, Sleep
Off is defaulted. After the unit is turned off, the Sleep function is canceled. After Sleep
function set up, the signal of Sleep will display.In this mode, the time of timer can be
adjusted. Under Fan and Auto modes, this function is not available.
After turned on the Turbo function, its signal will be displayed. When switching the
mode or changing fan speed, this function will be canceled automatically.
icon will blink.
The method of setting is the same as for TIMER ON.
ambient temperature. When the indoor unit firstly power on it will display the setting
temperature, if the temperature's displaying status is changed from other status to
control signal that will return to display the setting temperature. if the users haven't
set up the temperature displaying status, that will display the setting temperature.
(This function is applicable to partial of models)
After powered on, the setting temperature displaying is defaulted, (according to cust-
omers requirements to display, if there is no requirement that will default to display
Press this button, (When displaying ), will display presetting temperature; (when
displaying ) will display indoor ambient temperature, current displaying status
will not be changed. If current displays indoor ambient temperature, if received the
other remote control signal, it will display presetting temperature, 5s later, will back
to display the ambient temperature.
(This function is applicable to partial ofmodels)
the presetting temperature and there is no icon displayed on wireless remote control).
" ", displays the ambient temperature, 5s later or within 5s, it receives other remote
indoor fan will continue operation for 10 minutes in order to dry the indoor unit even
though you have turned off the unit. After energization, X-FAN OFF is defaulted.
X-FAN is not available in AUTO, FAN or HEAT mode.

12
Introduction for buttons on remote controller
Introduction for special function
14
Press this button to select LIGHT on or off in the displayer. When the LIGHT on is set,
the icon will be displayed and the indicator light in the displayer will be on. When the
LIGHT off is set, the icon will be displayed and the indicator light in the displayer will
be off.
LIGHT button
About X-FAN function
This function indicates that moisture on evaporator of indoor unit will be blowed after
About AUTO RUN
When AUTO RUN mode is selected, the setting temperature will not be displayed on
About turbo function
If start this function, the unit will run at super-high fan speed to cool or heat quickly so
About Blow over heat
(This function is applicable to partial of models)
When the unit is running in Heat mode or Auto Heat mode, compressor and indoor fan
is running, to turn the unit off, the compressor, outdoor fan will stop running. The upper
and lower guide board rotate to horizontal position, then the indoor fan will run at low
fan speed, 10s later, the unit will turn off.
that the ambient temp. approachs the preset temp. as soon as possible.
the LCD, the unit will be in accordance with the room temp. automatically to select the
suitable running method and to make ambient comfortable.
the unit is stopped to avoid mould.
1. Having set X-FAN function on: After turning off the unit by pressing ON/OFF button
indoor fan will continue running for about 10 min. at low speed. In this period, press
X-FAN button to stop indoor fan directly.
2. Having set X-FAN function off: After turning off the unit by pressing ON/OFF button,
the complete unit will be off directly.

13
Introduction for special function
About new function of defrosting
General operation
Under switch-off state, hold MODE key for 2 seconds to enter or exit defrost H1 func-
tion. After being energized, the defrost H1 function is defaulted off. When entering
defrost H1 function, the double-8 nixie tube will display H1 under switch-off state. When
adjusting to heat mode, the double-8 nixie tube will display in flash for 5 seconds at a
frequency of 1 count/sec. After the flash is ended, the remote controller will display the
preset heating temperature. Within these 5 seconds, press of +, - or TIMER key will
cancel the display H1, while the double-8 nixie tube will display the preset temperature.
To switch the display of temperature between Celsius and Fahrenheit after entering
defrost H1 function, the temperature value to be switched will be displayed firstly before
display of H1 after 5 seconds.
1. After powered on, press ON/OFF button, the unit will
Optional operation
1. Press SLEEP button, to set sleep.
2. Press TIMER ON and TIMER OFF button, can set
3. Press LIGHT button, to control the on and off of the
4. Press TURBO button, can realize the ON and OFF
start to run. (Note: when it is powered on, the guide
2. Press MODE button, select desired running mode.
3. Pressing + or - button,to set the desired temperature.
4. Pressing FAN button, set fan speed, can select AUTO
5. Pressing button, to select the swing.
louver of main unit will close automatically.)
(It isunnecessary to set the temp. at AUTO mode.)
FAN, LOW, MID and HIGH.
the scheduled timer on or timer off.
displaying part of the unit (This function may be not
available for some units).
of TURBO function.
Operation guide

14
Replacement of batteries in remote controller
1. Press the back side of remote controller marked
the cover of battery box along the arrow direction.
2. Replace two 7# (AAA 1.5V) dry batteries, and
make sure the position of "+" polar and "-" polar
are correct.
3. Reinstall the cover of battery box.
battery
Cover of battery box
remove
reinstall
● During operation, point the remote control signal sender at the receiving
window on indoor unit.
●The distance between signal sender and receiving window should be no
more than 8m, and there should be no obstacles between them.
or wireless telephone; remote controller should be close to indoor unit during
operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the
batteries.
● If the display on remote controller is fuzzy or there’s no display, please
replace batteries.
NOTICE

15
Emergency operation
Clean and maintenance
air conditioner. When the air conditioner is turned on, it will operate under
auto mode.
aux. button
panel
WARNING:
Use insulated object to press the auto button
If remote controller is lost or damaged, please use auxiliary button to turn
on or turn off the air conditioner. The operation in details are as below:
WARNING
NOTICE:
■Turn off the air conditioner and disconnect the power before cleaning the air
conditioner to avoid electric shock.
■ Do not wash the air conditioner with water to avoid electric shock.
■ Do not use volatile liquid to clean the air conditioner.
Clean surface of indoor unit
When the surface of indoor unit is dirty, it is recommended to use a soft dry cloth
or wet cloth to wipe it.
● Do not remove the panel when cleaning it.

16
Clean and Maintenance
Clean lter
1
2
3
4
Open panel
Remove lter
Clean lter
Install lter
Pull out the panel to a certain
angle as shown in the g.
Remove the lter as in-
dicated in the g.
● Use dust catcher or water to
clean the lter.
● When the lter is very dirty, use
the water (below 45℃) to clean
it, and then put it in a shady
and cool place to dry.
Install the lter and then close the
panel cover tightly.
■ The lter should be cleaned every three months. If there is much dust in the
operation environment, clean frequency can be increased.
■ After removing the lter, do not touch ns to avoid injury.
■ Do not use re or hair dryer to dry the lter to avoid deformation or re hazard.
WARNING

17
Clean and Maintenance
1. Check whether air inlets are blocked.
2. Check whether air switch,plug and socket are in good condition.
3. Check whether filter is clean.
4. Check whether drainage pipe is damaged.
1. Disconnect power supply.
2. Clean filter and indoor unit’s panel.
Notice for recovery
1. Many packing materials are recyclable materials.
Please dispose them in appropriate recycling unit.
2. If you want to dispose the air conditioner, please contact local dealer or
consultant service center for the correct disposal method.
NOTICE: Checking before use-season
NOTICE: Checking after use-season

18
Malfunction analysis
General phenomenon analysis
Please check below items before asking for maintenance. If the malfunction still
can’t be eliminated, please contact local dealer or qualied professionals.
Phenomenon Check items Solution
Indoor unit
can’t receive
remote
controller’s
signal or
remote
controller
has no
action.
● Whether it's interfered severely
(such as static electricity, stable
voltage)?
● Whether remote controller is
within the signal receiving
range?
● Whether there are obstacles?
● Whether remote controller is
pointing at the receiving
window?
● Is sensitivity of remote contro-
ller low; fuzzy display and no
display?
● No display when operating
remote controller?
● Fluorescent lamp in room?
● Pull out the plug. Reinsert
the plug after about 3min, and
then turn on the unit again.
● Signal receiving range is 8m.
● Remove obstacles.
● Select proper angle and point
the remote controller at the re-
ceiving window on indoor unit.
● Check the batteries. If the
power of batteries is too low,
please replace them.
● Take the remote controller
close to indoor unit.
● Turn off the uoresent lamp
and then try it again.
● Check whether remote cont-
roller appears to be damaged.
If yes, replace it.
No air
emitted
from
indoor
unit
● Air inlet or air outlet of indoor
unit is blocked? ● Eliminate obstacles.
● Under heating mode, indoor
temperature is reached to set
temperature?
● After reaching to set temper-
ature, indoor unit will stop bl-
owing out air.
● Heating mode is turned on just
now? ● In order to prevent blowing out cold air, indoor unit will be
started after delaying for sev-
eral minutes, which is a nor-
mal phenomenon.