Lennox GCM Series, GHA Series, GHM Series Owner's Manual

ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH GREEK

OWNER'S MANUAL

HI WALL

GCM/GHM

GHA

ENGLISH

Room Air Conditioner

OWNER'S MANUAL

HI WALL TYPE ROOM AIR CONDITIONER

• Please read carefully and thoroughly this manual
before operating this unit.

• Contact the authorized SVC man for repair or
maintenance of this unit.

• Contact the installer for installation of this unit.

• The appliance is not intended for use by young children or
infirm persons without supervision.

• Young children should be supervised to ensure that they
do not play with the appliance.

Prior to installation, this air-conditioning
unit must be submitted for approval by the utility
service which provides electricity (EN 61000-3 Norm).

2

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

WARNING

WARNING

CAUTION

CAUTION

WARNING

WARNING

Safety precautions

Safety Precautions

Warning ................................2

Caution .................................3

Operating Instructions

Preparation before operation

..4

Remote Control Features .....5

Operation Mode Selection ......6

Additional features..............11

Care and Maintenance

Care and Maintenance .......14

Operation Tips....................16

Troubleshooting tips

Before You

Call For Service...............17

To prevent injury and property damage, follow these instructions.

Incorrect operation due to ignoring instructions will cause harm or
damage, the seriousness of which is indicated by the following
symbols.

This symbol shows the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to
property.

Plug in the power plug
properly.

Do not operate or stop the unit by
inserting or pulling out the power plug.

Do not damage or use an
unspecified power cord.

• Otherwise, it will cause electric shock
or fire due to heat generation or
electric shock.

• It will cause electric shock or fire due
to heat generation.

• It will cause electric shock or fire.

•

In the supply cord is damaged, it mut be
replaced by the manufacturer or its service
agent or a similarly quallfied person in order
to avoid a hazard. (Y Attachment)

Do not modify power cord length or
share the outlet with other appliances.

Do not operate with wet hands or in
damp environment.

Do not direct airflow at room occupants
only.

• It will cause electric shock or fire due
to heat generation.

• It may cause electric shock. • This could damage your health.

Always perform grounding work. Do not allow water to run into

electric parts.

Always install air leakage breaker
and a dedicated switching board.

• No grounding may cause electric
shock.

• It may cause failure of machine or
electric shock.

• No installation may cause fire and
electric shock accident.

Unplug the unit if strange
sounds, smell, or smoke
comes from it.

Do not use the socket if it is
loose or damaged.

Do not open the entrance
during operation.

• It may cause fire and electric
shock accident.

• It may cause fire and electric
shock.

• It may cause electric shock.

Keep firearms away.

Do not use the power cord close to the
heating tools.

Do not use the power cord near flammable
gas or combustibles, such as gasoline,
benzene, thinner, etc.

• It may cause fire. • It may cause fire and electric shock. • It may cause an explosion or fire.

■ The following items are classified by these symblos.

Never Do This

Always Do This

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3

CAUTION

CAUTION

WARNING

WARNING

Never touch the metal parts
of the unit when removing
the filter.

Do not clean the air
conditioner with water.

Ventilate well when used
together with a stove, etc.

• They are sharp and may cause
injury.

• Water may enter the unit and
degrade the insulation. It may
cause an electric shock.

• An oxygen shortage may occur.

When cleaning the unit,
first make sure the power
and breaker are turned off.

Do not put a pet or house
plant where it will be
exposed to direct air flow.

Do not use appliance for special
purpose such as animals or
vegetables, precision machine,
or conservation of art articles.

• Since the fan rotates at high
speed during operation, it may
cause injury.

• This could injure the pet or
plant.

• It may cause damage of animals
or vegetables or loss of
property.

Stop operation and close
the window in storm or
hurricane.

Hold the plug by the head of
the power plug when taking
it out.

Turn off the main power
switch when not using it for
a long time.

• Operation with windows opened
may cause wetting of indoor and
soaking of household furniture.

• It may cause electric shock and
damage.

• It may cause failure of product
or fire.

Do not place obstacles
around the absorption inlet or
instead of blowing-out inlet.

Ensure that an installation console of
the outdoor appliance is not damaged
due to the use for a long time.

Always insert the filters
securely. Clean it once
every two weeks.

• It may cause failure of appliance
or accident.

• If leaving appliance damaged,
there is concern of damage due
to the falling of product.

• Operation without filters may
cause failure.

Do not use strong detergent
such as wax or thinner but
use a soft cloth.

Do not place heavy object on the
power cord and take care so that
the cord should not be pressed.

Do not drink water drained
from air conditioner.

• Appearance may be deteriorated
due to change of product color or
scratching of its surface.

• There is danger of fire or electric
shock.

• It contains contaminants and will
make you sick.

Ventilate before operating air conditioner
when gas goes out.

Do not disassemble or modify products
randomly.

• It may cause explosion, fire and, burn. • It may cause failure and electric shock.

Use caution when unpacking and installing.
Sharp edges could cause injury.

If water enters the product, turn the power
switch of the main body of appliance off. After
taking the power-plug out from the socket,
contact with the service center.

4

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

Preparation before operation

Storage and Tips For Using the Remote Control

• The remote control may be stored mounted on a
wall.

• To operate the room air conditioner, aim the
remote control at the signal receptor which is
located on the center or the right side of the indoor
unit.

How to Insert the Batteries

Remove the battery cover by pulling it according to the
arrow direction.

Insert new batteries making sure that the (+) and (-) of
battery are installed correctly.

Reattach the cover by sliding it back into position.

NOTES:

• Use 2 AAA(1.5volt) batteries. Do not use rechargeable
batteries.

Signal Receptor

Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)

Operation Indication Lamps

On/Off : Lights up during the system operation.
Sleep Mode : Lights up during Sleep Mode Auto operation.
Timer : Lights up during Timer operation.
Defrost Mode : Lights up during Defrost Mode or Hot Start operation (Heat pump model only)

: Lights up during outdoor unit operation. (Cooling model only)

OUT

DOOR

OUTDOOR UNIT
OPERATION

5

Cooling Operation

Auto Operation

Healthy Dehumidification Operation

Flip-up door
(opened)

Heating Operation

Signal transmitter

•

Cooling Model( ), Heat Pump Model( )

ON OFF

SET

CANCEL

10

11

12

13

7
8
9
2

6
1

5
4

3

About the remote control on the system

ENGLISH

The remote control transmits the signals to the system.

Features of the Remote Control- Door Closed

Operation Mode

START/STOP BUTTON

Operation starts when this button is pressed
and stops when the button is pressed again.

OPERATION MODE SELECTION BUTTON

Used to select the operation mode.

ROOM TEMPERATURE SETTING
BUTTONS

Used to select the room temperature.

INDOOR FAN SPEED SELECTOR

Used to select fan speed in four steps
low, medium, high and CHAOS.

JET COOL

Used to start or stop the speed
cooling. (Speed cooling operates
super high fan speed in cooling mode.)

CHAOS SWING BUTTON

Used to stop or start louver movement and
set the desired up/down airflow direction.

ON/OFF TIMER BUTTONS

Used to set the time of starting and stopping
operation.

TIME SETTING BUTTONS

Used to adjust the time. (See page 11)

TIMER SET/CANCEL BUTTONS

Used to set the timer when the desired time
is obtained and to cancel the Timer
operation. (See page 11)

SLEEP MODE AUTO BUTTON

Used to set Sleep Mode Auto operation.
(See page 11)

AIR CIRCULATION BUTTON

Used to circulate the room air without cooling
or heating. (See page 12)

ROOM TEMPERATURE CHECKING
BUTTON

Used to check the room temperature.

RESET BUTTON

Used prior to resetting time or after replacing
batteries.

1

2

345

678

9

10

11

12

13

6

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

To raise the temperature

To lower the temperature

How to use the Operation Mode Selection button

Press the Start/Stop button.
The unit will respond with
a beep.

Open the door on the remote control. To select Cooling
Operation, press the Operation Mode Selection button.
Each time the button is pressed, the operation mode is
shifted in the direction of the arrow.

Close the door on the remote control. Set the temperature
lower than the room temperature. The temperature can be
set within a range of 18°C~30°C in 1°C increments.

Set the fan speed again with the door
of the remote control still closed. You
can select the fan speed in four steps­low, medium, high, or CHAOS. Each
time the button is pressed, the fan
speed mode is shifted.

Cooling Operation

1

2

3

4

Natural wind by the CHAOS logic

❏ For more fresh feeling than other fan speed, press the Indoor Fan Speed Selector and set to

CHAOS mode. In this mode, the wind blows like natural breeze by automatically changing fan
speed according to the CHAOS logic.

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7

Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

To raise the temperature

To lower the temperature

Press the Start/Stop button.
The unit will respond with
a beep.

Open the door on the remote control. To select Auto
Operation, press the Operation Mode Selection button.
Each time the button is pressed, the operation mode is
shifted in the direction of the arrow.

The temperature and fan speed are automatically set by the
electronic controls based on the actual room temperature. If
you want to change the set temperature, close the door on
the remote control and press the Room Temperature Setting
buttons. The cooler or warmer you feel, the more times (up to
two times) you should press the button. The set temperature
will then be changed automatically.

During Auto Operation:

❏ You cannot switch the indoor fan speed. It has already been set by the Fuzzy rule.
❏ If the system is not operating as desired, manually switch to another mode. The system will not

automatically switch from the cooling mode to the heating mode, or from heating to cooling, it must be
done by manually resetting.

❏ During Auto Operation, pressing the chaos swing button makes the horizontal louvers swing up and

down automatically. If you want to stop auto-swing, press the chaos swing button again.

Auto Operation

1

2

3

8

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

Press the Start/Stop button.
The unit will respond with
a beep.

Open the door on the remote control. To select Healthy
Dehumidification Operation, press the Operation Mode
Selection button.
Each time the button is pressed, the operation mode is
shifted in the direction of the arrow.

During Healthy Dehumidification Operation:

❏ If you select the dehumidification mode on the operation selection button, the A/C starts to run the

dehumidification function, automatically setting the room temp. and airflow volume to the best condition
for dehumidification based on the sensed current room temp.

In this case, however, the setting temp. is not displayed in the remote control and you are not able to
control the room temp. either.

❏ During the healthy dehumidification function, the airflow volume is automatically set according to the

optimization algorithm responding to the current room temp. status and makes the room condition
healthy and comfortable even in the high humidity season.

Healthy Dehumidification Operation

1

2

Set the fan speed again with the door
of the remote control still closed. You
can select the fan speed in four steps­low, medium, high, or CHAOS. Each
time the button is pressed, the fan
speed mode is shifted.

3

Natural wind by the CHAOS logic

❏ For more fresh feeling than other fan speed, press the Indoor Fan

Speed Selector and set to CHAOS mode. In this mode, the wind
blows like natural breeze by automatically changing fan speed
according to the CHAOS logic.

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9

Cooling

Healthy

Dehumidification

Auto

To raise the temperature

To lower the temperature

Heating

(Heat pump model only)

Press the Start/Stop button.
The unit will respond with
a beep.

Open the door on the remote control. To select Heating
Operation, press the Operation Mode Selection button.
Each time the button is pressed, the operation mode is
shifted in the direction of the arrow.

Close the door on the remote control.
Set the temperature higher than the room temperature.
The temperature can be set within a range of 16°C~30°C in
1°C increments.

Set the fan speed again with the door of the
remote control still closed. You can select
the fan speed in four steps–low, medium,
high, or CHAOS. Each time the button is
pressed, the fan speed mode is shifted.

Heating Operation(Heat pump model only)

1

2

3

4

Natural wind by the CHAOS logic

❏ For more fresh feeling than other fan speed, press the Indoor Fan Speed Selector and set to

CHAOS mode. In this mode, the wind blows like natural breeze by automatically changing fan
speed according to the CHAOS logic.

10

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

or or

NOTE:

❏ During the JET COOL function at any moment, the A/C starts to blow the cool air at

extremely high speed for 30 minutes setting the room temp. automatically to 18°C. It is
especially used to cool the room temp. in the shortest time in a hot summer.

In heat pump mode or neuro fuzzy mode however, the JET COOL function is not available.
❏ In order to return to the normal cooling mode from the JET COOL mode, you just press

either the operation mode selection button, airflow volume selection or temp. setting button
or the JET COOL button again.

Press the Start/Stop button.
The unit will respond with
a beep.

Press the Jet Cool button to operate
the speed cooling mode and the unit
will operate in super high fan speed
on cooling mode for 30 minutes.

To cancel the Jet Cool mode, press the Jet Cool button
again or the fan speed button or the room temperature
setting button and the unit will operate in high fan speed on
cooling mode.

Jet Cool Operation

1

2

3

11

Delay OFF Timer Delay ON Timer Delay OFFand ON Timer Delay ONand OFF Timer

ENGLISH

Additional features

Sleep Mode

Press the Sleep Mode Auto button to set the
time you want the unit to turn off automatically.

The Timer is programmed in one-hour
increments by pressing the Sleep Mode Auto
button 1 to 7 times.
The sleep mode is available for 1 to 7 times. To
alter the time period in steps of 1 hour, press
the Sleep Mode Button while aiming at air
conditioner.

Make sure the Sleep Mode Auto LED lights up.

To cancel the Sleep Mode, press the sleep
Mode Auto button several times until the star
( ) disappears from the operation display.

Note: The Sleep Mode will be operated at
low fan speed (cooling) or medium fan
speed (heat pump only) for quiet sleeping.

IN COOLING MODE: The temperature will
automatically rise by 1°C over the next 30
minutes and by 2°C in 1 hour for comfortable
sleeping.

Setting the Time

Time can be set only when you have pressed
the Reset button. If you have just replaced the
batteries, the Reset button should be pressed
to reset the time.

Press the Start/Stop button.

Press the Time Setting buttons until the
desired time is set.

Press the Timer SET button.

Note: Check the indicator

for A.M. and P.M.

Make sure the time is set correctly on the
remote control display.

Press the ON/OFF Timer
buttons to turn Timer on or off.

Press the Time Setting
buttons until the desired
time is set.

Press the selected on/off setting by
pressing the Timer SET button while
aiming the remote control at the signal
receptor.

To cancel the setting the timer.

Press the Timer Cancel button while
aiming remote control at the signal
receptor.
(The timer lamp on the air conditioner and
the display will go out.)

Delay Start/Pre-Set Stop

NOTE: Select one of the following four types of operation.

1

1

2

3

2

3

with the unit running

1

2

3

4

ON OFF

SET

SET

CANCEL

12

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

CAUTION

CAUTION

Fan speed is on low. Fan speed is on medium. Fan speed is on high.CHAOS Air

Air Circulation Mode

Circulates the room air without cooling or heating.
Press the Start/Stop button. the unit will respond with a beep.
Open the door on the remote control. Press the Air Circulation button. Close the door on the

remote control. Now each time that you press the Indoor Fan Speed Selector, the fan speed is
shifted from low to CHAOS and back to low again.

Note:

❏ CHAOS Air economizes power consumption and prevents overcooling. The fan speed is

automatically changed from high to low or vice versa, depending on the ambient temperature.

1

2

The up/down airflow (Vertical Airflow) can be
adjusted by using the remote control.

Press the Start/Stop button to start the unit.
Open the door on the remote control.

Press Chaos Swing button and the louvers will
swing up and down. Press the Chaos Swing
button again to set the vertical louver at the
desired airflow direction.

Note:

❏ If you press the CHAOS swing button, the

horizontal airflow direction is changed
automatically based on the CHAOS algorithm to
distribute the air in the room evenly and at the
same time to make the human body feel most
comfortable, as if enjoying a natural breeze.

❏ Always use the remote control to adjust the

up/down airflow direction. Manually moving the
vertical airflow direction louver by hand could
damage the air conditioner.

❏ When the unit is shut off, the up/down airflow

direction louver will close the air outlet vent of
the system.

To adjust left/right(Horizontal Airflow) direction
Caution :

Ensure unit is turned off before adjusting
the horizontal airflow direction control.
Carefully open vertical louver to allow
access to the horizontal airflow direction.

Adjust the left/right airflow direction by hand.

Vertical Airflow Direction Control

Do not disassemble or modify the air conditioner for special purpose.
Please contact the authorized service technician for repair or
maintenance.

ENGLISH

13

Tact Switch

(Some Models)

ON/OFF

ON/OFF

Heat pump Model

Cooling Model

Room Temp. ≥ 24°C21°C ≤ Room Temp. < 24°C Room Temp. < 21°C

Operating mode Cooling Cooling Healthy Dehumidification Heating

Indoor FAN Speed

High High High High

Setting Temperature

22°C22°C23°C24°C

ON/OFF OPERATION

Operation procedures when the remote control can't be used.
ON/OFF operation starts when this button is pressed, which is
located on the right side of the indoor unit and stops when you
press the button again.
Upon starting the ON/OFF operation, the operating conditions
are automatically set as Table 1, and the initial mode continues
during this operation.

Tact Switch Operation(Some Models)

Auto restart

In case the power comes on again after a power failure, Auto Restarting Operation is the function to
operate procedures automatically to the previous operating condition.

14

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

Helpful information

Fan speed and cooling capacity.
The cooling capacity indicated in the specification is the
value when the fan speed is set to high, and the capacity will
be lower at low or medium fan speed.
High fan speed is recommended when you wish to cool the
room quickly.

High

Speed

Care and maintenance of the air conditioner

CAUTION: Before performing any maintenance, turn off the main power to the system.

Indoor Unit

Grille, Case, and Remote Control

❏ Turn the system off before cleaning. To

clean, wipe with a soft, dry cloth. Do not
use bleach or abrasives.

NOTE:

Supply power must be disconnected before
cleaning the indoor unit.

AIR FILTERS

The air filters behind the front grille should be
checked and cleaned once every 2 weeks or more
often if neccessary.

❏

Never use any of the followings:

• Water hotter than 40°C
Could cause deformation and/or
discoloration.

• Volatile substances
Could damage the surfaces of the air
conditioner.

Lift the front access panel and pull the filter tab
slightly forward to remove the filter.

Clean the filter with a vacuum or warm, soapy
water.

• If dirt is conspicuous, wash with a
solution of detergent in lukewarm water.

• If hot water (40°C or more) is used, it
may be deformed.

After washing with water, dry well in the
shade.

Re-install the air filter.

Vertical louver

Horizontal louver

Air filters

(behind front panel)

Air outlet vent

Air inlet vent

G

a

s

o

l

i

n

e

P

o

w

d

e

r

1

2

3

4

ENGLISH

15

(Side) (Rear)

Air intake
vents

Air outlet
vents

Piping
Drain Hose

Air purifying filter

Air filter

3

2

Outdoor Unit

The heat exchanger coils and panel vents of the outdoor unit should be checked regularly. If
clogged with dirt or soot, the heat exchanger and panel
vents may be professionally steam cleaned.

NOTE:

Dirty or clogged coils will reduce the
operating efficiency of the system and cause higher operating costs.

Replacement of Purifying Filter (Optional)

• Recomended use period : About 2 years

Open front panel and remove air
filters.

Reinsert air filters and close front
panel.

Remove air purifying filters.

Insert new air purifying filters.

1

2

3

4

Safety PrecautionsOperating InstructionsCare and MaintenanceTroubleshooting Tips

16

CAUTION

Operate the air conditioner on Air circulation
mode (Refer to page 12) for 2 to 3 hours.

• This will dry out the internal mechanisms.

When air conditioner is not going to be
used for a long time.

When the air conditioner is to be used again.

Turn off the circuit breaker, and disconnect
the plug.

Remove the batteries from the remote
control.

When the air conditioner is not going to be used for a long time .

Turn off the circuit breaker when the air conditioner
is not going to be used for a long time.

Dirt may collect and may cause a fire.

Clean the air filter and install it in the indoor
unit.
(Refer to page 14 for cleaning filters.)

Check that the air inlet and outlet of the
indoor/outdoor unit are not blocked.

Do not overcool the room.

This is not good for the health
and wastes electricity.

Make sure that the doors
and windows are shut tight.

Avoid opening doors and
windows as much as possible
to keep the cool air in the room.

Keep blinds or curtains
closed.

Do not let direct sunshine enter
the room when the air
conditioner is in operation.

Clean the air filter regularly.

Blockages in the air filter
reduce the airflow and lower
cooling and dehumidifying
effects. Clean at least once
every two weeks.

Keep the room temperature
uniform.

Adjust the vertical and
horizontal airflow direction to
ensure a uniform temperature
in the room.

Ventilate the room
occasionally.

Since windows are kept closed,
it is a good idea to open them
and ventilate the room now and
then.

Operation Tips