Lennox LI036CO-180P432 User manual

Split Air Conditioner
Thank you for selecting LENNOX air conditioners.Please read this manual
carefully before operation and keep it for further reference.
OWNER'S MANUAL
LENNOX AIR CONDITIONERS
MODEL:
LI036CI-180P432
LI036CO-180P432

Content
Operation Notices
Precautions............................................................................................................1
Parts name............................................................................................................6
Screen Operation Guide
Buttons on remote controller .................................................................................7
Introduction for icons on display screen ................................................................7
Introduction for buttons on remote controller.........................................................8
Function introduction for combination buttons.....................................................11
Operation guide...................................................................................................13
Replacement of batteries in remote controller.....................................................13
Emergency operation ..........................................................................................14
Maintenance
Clean and maintenance.......................................................................................14
Malfunction
Malfunction analysis............................................................................................17
Installation Notice
Installation dimension diagram............................................................................21
Tools for installation.............................................................................................22
Selection of installation location ..........................................................................22
Requirements for electric connection..................................................................23
Installation
Installation of indoor unit......................................................................................24
Installation of outdoor unit ...................................................................................29
Vacuum pumping.................................................................................................32
Leakage detection...............................................................................................32
Check after installation........................................................................................33
Test and operation
Test operation......................................................................................................33
Attachment .........................................................................34
Pipe expanding method.......................................................................................36
Wired Controller(Optional)...................................................................................37

Explanation of Symbols
Indicates a hazardous situation that, if not avoided, will
result in death or serious injury.
Indicates a hazardous situation that, if not avoided, could
result in death or serious injury.
Indicates a hazardous situation that, if not avoided, may
result in minor or moderate injury.
Indicates important but not hazard-related information,
used to indicate risk of property damage.
Indicates a hazard that would be assigned a signal word
WARNING or CAUTION.

Precautions
1
WARNING
Do not connect air conditioner to multi-purpose socket.
This appliance is not intended for use by persons (incl-
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.
uding children) with reduced physical, sensory or men-
tal capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person respon-
sible for their safety. Children should be supervised to
ensure that they do not play with the appliance.
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.

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.
Precautions
WARNING
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.
2

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.
Precautions
WARNING
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
3

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.
Precautions
WARNING
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.
4

The indoor unit should be installed close to the wall.
Instructions for installation and use of this product are
provided by the manufacturer.
Precautions
WARNING
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
far away from animals or plants.If it is unavoidable,
please add the fence for safety purpose.
Select a location which is out of reach for children and
reachable after finishing installation.
For the air conditioner with plug, the plug should be
Working temperature range
NOTICE:
Indoor side DB/WB(℃/°F) Outdoor side DB/WB(℃/°F)
Maximum cooling 27/19(80.6/66.2) 46/24(114.8/75.2)
Maximum heating 27/-(80.6/-) 24/18(75.2/64.4)
●The operating temperature range (outdoor temperature) for cooling only unit is
-15℃~ 46℃(5 ~ 114.8°F) ; for heat pump unit is -20℃~ 46℃(-4 ~ 114.8°F).
5

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

7
Buttons on remote controller
Introduction for icons on display screen
/
F
C
H O U R
ONOFF
3
54
76
98
1110
1312
1614
15
1
2
1ON/OFF button
2- button
3+ button
4MODE button
5FAN button
9SLEEP button
10 TEMP button
11 TIMER-ON button
12 CLOCK button
13 TIMER-OFF button
14 TURBO button
15 LIGHT button
16 X-FAN button
Up & down swing
Child lock
set time
TIMER ON/TIMER OFF
turbo mode
X-fan
health mode
ventilation operation
send signal
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
I feel
Operation mode
8℃heating function
8
6SWING button
7I FEEL button
/ button
set temperature
This is a general remote controller. Some
models have this function while some do
not. Please refer to the actual models.

8
Introduction for buttons on remote controller
Note:
●After putting through power, air conditioner will give out a sound and operation
indicator " " is ON (red indicator). You can operate the air conditioner through
the remote controller.
- button
2
Press this button to decrease set temperature. Holding it down above 2 seconds
rapidly decreases set temperature. In AUTO mode, set temperature is not
adjustable.
+ button
3
Press this button to increase set temperature. Holding it down above 2 seconds
rapidly increases set temperature. In AUTO mode, set temperature is not
adjustable.
ON/OFF button
1
Press this button to turn on the unit. Press this button again to turn off the unit.
●
At ON status, after each pressing button on remote controller, the signal icon " "
indicates the signal has been sent to air conditioner.
MODE button
4
Each time you press this button, a mode is selected in a sequence that goes from
AUTO, COOL, DRY, FAN, and HEAT*, as the following:
*Note: Only for models with heating function.
After energization, AUTO mode is defaulted. In AUTO mode, the set temperature
will not be displayed on the LCD, and the unit will automatically select the suitable
operation mode in accordance with the room temperature to make indoor room
comfortable. (As for cooling only unit, it won’t have any action when it receives the
signal of heating operation.)
AUTO DRY FAN HEAT*COOL
● This is a general use remote controller, it could be used for the air conditioners
with multifunction; For some function, which the model doesn't have, if press
the corresponding button on the remote controller that the unit will keep the
original running status.

9
Introduction for buttons on remote controller
FAN button
5
This button is used for setting Fan Speed in the sequence that goes from AUTO,
, , to , then back to Auto.
Auto
Low speed Medium speed High speed
I FEEL button
7
Press this button to turn on I FEEL function. The unit automatically adjust tempera-
ture according to the sensed temperature. Press this button again to cancel I FEEL
function.
SLEEP button
9
Press this button to go into the SLEEP operation mode. Press it again to cancel
this function. This function is available in COOL, HEAT (Only for models with
heating function) mode to maintain the most comfortable temperature for you.
SWING button
6
Press this button to set up &down swing angle, which circularly changes as below:
OFF
This remote controller is universal. If any command , or is sent out, the unit
will carry out the command as
indicates the guide louver swings as:
8
Press this button to achieve the on and off of healthy and scavenging functions in
operation status. Press this button for the rst time to start scavenging function;
LCD displays " ". Press the button for the second time to start healthy and
scavenging functions simultaneously; LCD displays " " and " ". Press this
button for the third time to quit healthy and scavenging functions simultaneously.
Press the button for the fourth time to start healthy function; LCD display " ".
Press this button again to repeat the operation above. (This function is applicable
to partial of models)
/ button

10
Introduction for buttons on remote controller
TIMER-OFF button
13
Press this button to initiate the auto-off timer. To cancel the auto-timer program,
simply press the button again. TIMER OFF setting is the same as TIMER ON.
Note:
● Outdoor ambient temperature display may can’t be selected for some models.
When indoor unit receives " " signal, it displays indoor set temperature.
● Only for the model whose indoor unit has dual-8 display.
TEMP button
10
Press this button can see indoor set temperature, indoor ambient temperature or
outdoor ambient temperature on indoor unit’s display. Temperature is set circularly
by remote controller as below:
● When selecting " " by remote controller or no display, temperature indicator on
indoor unit displays set temperature.
● When selecting " " by remote controller, temperature indicator on indoor unit
displays indoor ambient temperature.
● When selecting " " by remote controller, temperature indicator on indoor unit
displays outdoor ambient temperature.
no display
TIMER-ON button
11
Press this button to initiate the auto-ON timer. To cancel the auto-timer program,
simply press this button again.
After press of this button, disappears and "ON" blinks. 00:00 is displayed for
ON time setting. Within 5 seconds, press + or - button to adjust the time value.
Every press of either button changes the time setting by 1 minute. Holding down
either button rapidly changes the time setting by 1 minute and then 10 minutes.
Within 5 Seconds after setting, press TIMER ON button to conrm.
CLOCK button
12
Press CLOCK button, blinking. Within 5 seconds, pressing + or - button adjusts
the present time. Holding down either button above 2 seconds increases or
decreases the time by 1 minute every 0.5 second and then by 10 minutes every
0.5 second. During blinking after setting, press CLOCK button again to conrm the
setting, and then will be constantly displayed.

11
Function introduction for combination buttons
TURBO button
14
Press this button to activate / deactivate the Turbo function which enables the
unitto reach the preset temperature in the shortest time. In COOL mode, the unit
will blow strong cooling air at super high fan speed. In HEAT mode, the unit will
blow strong heating air at super high fan speed.
Introduction for buttons on remote controller
LIGHT button
15
Press LIGHT button to turn on the display's light and press this button again to turn
off the display's light. If the light is turned on, is displayed. If the light is turned
off, disappears.
X-FAN button
16
Pressing X-FAN button in COOL or DRY mode, the icon is displayed and the
indoor fan will continue operation for 2 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.
Press "+" and "-" buttons simultaneously to lock or unlock the keypad. If the remote
controller is locked, is displayed. In this case, pressing any button, blinks
three times.
Combination of "+" and "-" buttons: About lock
At unit OFF, press "MODE" and "-" buttons simultaneously to switch between °C
and °F.
Combination of "MODE" and "-" buttons:
About switch between Fahrenheit and centigrade

● This function is only available for some models.
12
Function introduction for combination buttons
Press "TEMP" and "CLOCK" simultaneously in COOL mode to start energy-saving
function. Nixie tube on the remote controller displays "SE". Repeat the operation to
quit the function.
Combination of "TEMP" and "CLOCK" buttons:
About Energy-saving Function
Press "TEMP" and "CLOCK" simultaneously in HEAT mode to start 8°C Heating
Function Nixie tube on the remote controller displays " " and a selected
temperature of "8°C" (46°F if Fahrenheit is adopted). Repeat the operation to quit
the function.
Combination of "TEMP" and "CLOCK" buttons:
About 8°C Heating Function
About Back-lighting Function
★About HEALTH function (COLD PLASMA)
Turn on the unit, start up the fan (Breezing and X-FAN are excluded) and press
HEATLTH button on remote controller to start health function (If there is not
HEALTH button on remote controller, the unit defaults health function ON. )
WIFI Function
Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI
function. When WIFI function is turned on, the " " icon will be displayed on
remote controller; Long press "MODE" and "TURBO" buttons simultaneously for
10s, remote controller will send WIFI reset code and then the WIFI function will be
turned on. WIFI function is defaulted ON after energization of the remote controller.

13
1. After putting through the power, press "ON/OFF" button on remote controller to
turn on the air conditioner.
2. Press "MODE" button to select your required mode: AUTO, COOL, DRY, FAN,
HEAT.
3. Press "+" or "-" button to set your required temperature. (Temperature can’t be
adjusted under auto mode).
4. Press "FAN" button to set your required fan speed: auto, low, medium and high
speed.
5. Press "SWING" button to select fan blowing angle.
Operation guide
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.
NOTICE
● 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.
battery
Cover of battery box
remove
reinstall

14
Emergency operation
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:
air conditioner. When the air conditioner is turned on, it will operate under
auto mode.
aux. button
panel
Clean and maintenance
■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.
WARNING
NOTICE:
WARNING:
Use insulated object to press the auto button

15
Clean and maintenance
1
2
3
4
Open panel
Pull out the panel to a certain ● Use dust catcher or water to
the water (below 45℃) to clean
it, and then put it in a shady
and cool place to dry.
panel cover tightly.
operation environment, clean frequency can be increased.
WARNING

16
Clean and maintenance
1. Check whether air inlets and air outlets are blocked.
2. Check whether circuit break, plug and socket are in good condition.
4. Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
5. Check whether drainage pipe is damaged.
1. Disconnect power supply.
3. Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
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

17
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.