Lennox LMO12CI-100V232-X 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: LMO12CI-100V232-X
LMO12CO-100V232-X
LMO12HI-100V232-X
LMO12HO-100V232-X

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 they are away from the appliance.
R410A(R32/125: 50/50): 1975
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
Introduction for simple operation and other function......................................................12
Replacement of batteries in remote controller......................................................11
Emergency operation............................................................................................13
Clean and Maintenance........................................................................................13
Malfunction
Malfunction analysis.............................................................................................16
Installation Notice
Installation dimension diagram............................................................................20
Tools for installation.............................................................................................21
Selection of installation location ..........................................................................21
Requirements for electric connection ..................................................................22
Installation
Installation of indoor unit......................................................................................23
Installation of outdoor unit ...................................................................................28
Vacuum pumping.................................................................................................31
Leakage detection...............................................................................................31
Check after installation ........................................................................................32
Test and operation
Test operation......................................................................................................32
Attachment
Pipe expanding method........................................................................................33
Configuration of connection pipe..........................................................................33

1
Precautions
Warning
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 ormental 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.
.

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
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.

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
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

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
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.

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
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
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(℃) Outdoor side DB/WB(℃)
Maximum cooling 32/23 43/26
Maximum heating 27/- 24/18
●The operating temperature range (outdoor temperature) for cooling only unit is
18℃~43℃; for heat pump unit is -7
℃~ 43℃.

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

7
Buttons on remote controller
Introduction for icons on display screen
1
14
3
1
13
2
2
5
4
6
7
8
11
12
13
9
14
15
ON/OFF button
▲ button
3
FAN button
SWING button
TIMER OFF button
TURBO button
10
TEMP button
I FEEL button
button
CLOCK button
TIMER ON button
SLEEP button
Send signal
Turbo mode
8℃heating function
Set temperature
Set time
TIMER ON /
TIMER OFF
Child lock
Up & down swing
Set fan speed
ventilation operation
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
I feel
6
9
8
12
15
4
7
10
5
11
X-FAN button
/
MODE button
▲
button
X-fan mode
health function