Samsung AJ MBLDEH Series User manual

Air conditioner
User manual
AJMBLDEH / AJ052MBMDEH
• Thank you for purchasing this Samsung air conditioner.
• Before operating this unit, please read this user manual carefully and retain it for future
reference.
DB68-06918A-03

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Safety Information 3
Safety Information 3
At a Glance 10
Indoor Unit Overview 10
Cleaning and Maintenance 11
Cleaning the Air Conditioner 11
Cleaning the air filter
Maintaining the Air Conditioner 13
Periodical checks
Appendix 15
Troubleshooting 15
Operation Features 19
Contents
Correct Disposal of This Product
(Waste Electrical & Electronic Equipment)
(Applicable in countries with separate collection systems)
This marking on the product, accessories or literature indicates that the product and its electronic accessories
(e.g. charger, headset, USB cable) should not be disposed of with other household waste at the end of their
working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal,
please separate these items from other types of waste and recycle them responsibly to promote the sustainable
reuse of material resources.
Household users should contact either the retailer where they purchased this product, or their local government
office, for details of where and how they can take these items for environmentally safe recycling.
Business users should contact their supplier and check the terms and conditions of the purchase contract. This
product and its electronic accessories should not be mixed with other commercial wastes for disposal.

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Safety Information
Before using your new air conditioner, please read this manual thoroughly
to ensure that you know how to safely and efficiently operate the extensive
features and functions of your new appliance.
Because the following operating instructions cover various models, the
characteristics of your air conditioner may differ slightly from those
described in this manual. If you have any questions, call your nearest
contact centre or find help and information online at www.samsung.com.
WARNING
Hazards or unsafe practices that may result in severe personal injury or
death.
CAUTION
Hazards or unsafe practices that may result in minor personal injury or
property damage.
Follow directions.
Do NOT attempt.
Make sure the machine is grounded to prevent electric shock.
Cut-off the power supply.
Do NOT disassemble.
FOR INSTALLATION
WARNING
Use the power line with the power specifications of the product or
higher and use the power line for this appliance only. In addition, do not
use an extension line.
• Extending the power line may result in electric shock or fire.
• Do not use an electric transformer. It may result in electric shock or fire.
• If the voltage/frequency/rated current condition is different, it may cause
fire.
Safety Information
Safety Information

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Safety Information
Safety Information
The installation of this appliance must be performed by a qualified
technician or service company.
• Failing to do so may result in electric shock, fire, explosion, problems with
the product, or injury.
Install a switch and circuit breaker dedicated to the air conditioner.
• Failing to do so may result in electric shock or fire.
Fix the outdoor unit firmly so that the electric part of the outdoor unit
is not exposed.
• Failing to do so may result in electric shock or fire.
Do not install this appliance near a heater, inflammable material. Do
not install this appliance in a humid, oily or dusty location, in a location
exposed to direct sunlight and water (rain drops). Do not install this
appliance in a location where gas may leak.
• This may result in electric shock or fire.
Never install the outdoor unit in a location such as on a high external
wall where it could fall.
• If the outdoor unit falls, it may result in injury, death or property damage.
This appliance must be properly grounded. Do not ground the appliance
to a gas pipe, plastic water pipe, or telephone line.
• Failure to do so may result in electric shock, fire, an explosion, or other
problems with the product.
• Never plug the power cord into a socket that is not grounded correctly
and make sure that it is in accordance with local and national codes.

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Safety Information
CAUTION
Install your appliance on a level and hard floor that can support its
weight.
• Failing to do so may result in abnormal vibrations, noise, or problems
with the product.
Install the draining hose properly so that water is drained correctly.
• Failing to do so may result in water overflowing and property damage.
Avoid adding drain to waste pipes as odours may arise in the future.
When installing the outdoor unit, make sure to connect the draining
hose so that draining is performed correctly.
• The water generated during the heating operation by the outdoor unit
may overflow and result in property damage.
In particular, in winter, if a block of ice falls, it may result in injury, death
or property damage.
FOR POWER SUPPLY
WARNING
When the circuit breaker is damaged, contact your nearest service
centre.
Do not pull or excessively bend the power line. Do not twist or tie the
power line. Do not hook the power line over a metal object, place a
heavy object on the power line, insert the power line between objects,
or push the power line into the space behind the appliance.
• This may result in electric shock or fire.
CAUTION
When not using the air conditioner for a long period of time or during a
thunder/lightning storm, cut the power at the circuit breaker.
• Failing to do so may result in electric shock or fire.

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Safety Information
Safety Information
FOR USING
WARNING
If the appliance is flooded, please contact your nearest service centre.
• Failing to do so may result in electric shock or fire.
If the appliance generates a strange noise, a burning smell or smoke,
unplug the power plug immediately and contact your nearest service
centre.
• Failing to do so may result in electric shock or fire.
In the event of a gas leak (such as propane gas, LP gas, etc.), ventilate
immediately without touching the power line. Do not touch the
appliance or power line.
• Do not use a ventilating fan.
• A spark may result in an explosion or fire.
To reinstall the air conditioner, please contact your nearest service
centre.
• Failing to do so may result in problems with the product, water leakage,
electric shock, or fire.
• A delivery service for the product is not provided. If you reinstall the
product in another location, additional construction expenses and an
installation fee will be charged.
• Especially, when you wish to install the product in an unusual location
such as in an industrial area or near the seaside where it is exposed to the
salt in the air, please contact your nearest service centre.
Do not touch the circuit breaker with wet hands.
• This may result in electric shock.
Do not turn the air conditioner off with the circuit breaker while it is
operating.
• Turning the air conditioner off and then on again with the circuit breaker
may cause a spark and result in electric shock or fire.

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Safety Information
After unpacking the air conditioner, keep all packaging materials well
out of the reach of children, as packaging materials can be dangerous to
children.
• If a child places a bag over its head, it may result in suffocation.
Do not touch the front panel with your hands or fingers during the
heating operation.
• This may result in electric shock or burns.
Do not insert your fingers or foreign substances into the outlet when
the air conditioner is operating or the front panel is closing.
• Take special care that children do not injure themselves by inserting their
fingers into the product.
Do not insert your fingers or foreign substances into the air inlet/outlet
of the air conditioner.
• Take special care that children do not injure themselves by inserting their
fingers into the product.
Do not strike or pull the air conditioner with excessive force.
• This may result in fire, injury, or problems with the product.
Do not place an object near the outdoor unit that allows children to
climb onto the machine.
• This may result in children seriously injuring themselves.
Do not use this air conditioner for long periods of time in badly
ventilated locations or near infirm people.
• Since this may be dangerous due to a lack of oxygen, open a window at
least once an hour.
If any foreign substance such as water has entered the appliance, cut
the power by unplugging the power plug and turning the circuit breaker
off and then contact your nearest service centre.
• Failing to do so may result in electric shock or fire.
Do not attempt to repair, disassemble, or modify the appliance yourself.
• Do not use any fuse (such as copper, steel wire, etc.)other than the
standard fuse.
• Failing to do so may result in electric shock, fire, problems with the
product, or injury.

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Safety Information
Safety Information
CAUTION
Do not place objects or devices under the indoor unit.
• Water dripping from the indoor unit may result in fire or property
damage.
Check that the installation frame of the outdoor unit is not broken at
least once a year.
• Failing to do so may result in injury, death or property damage.
Max current is measured according to IEC standard for safety and
current is measured according to ISO standard for energy efficiency.
Do not stand on top of the appliance or place objects (such as laundry,
lighted candles, lighted cigarettes, dishes, chemicals, metal objects, etc.)
on the appliance.
• This may result in electric shock, fire, problems with the product, or injury.
Do not operate the appliance with wet hands.
• This may result in electric shock.
Do not spray volatile material such as insecticide onto the surface of the
appliance.
• As well as being harmful to humans, it may also result in electric shock,
fire or problems with the product.
Do not drink the water from the air conditioner.
• The water may be harmful to humans.
Do not apply a strong impact to the remote controller and do not
disassemble the remote controller.
Do not touch the pipes connected with the product.
• This may result in burns or injury.
Do not use this air conditioner to preserve precision equipment, food,
animals, plants or cosmetics, or for any other unusual purposes.
• This may result in property damage.
Avoid directly exposing humans, animals or plants from the air flow
from the air conditioner for long periods of time.
• This may result in harm to humans, animals or plants.

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Safety Information
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 that they do not
play with the appliance.
FOR CLEANING
WARNING
Do not clean the appliance by spraying water directly onto it. Do not
use benzene, thinner, alcohol or acetone to clean the appliance.
• This may result in discoloration, deformation, damage, electric shock or fire.
Before cleaning or performing maintenance, unplug the air conditioner
from the wall socket and wait until the fan stops.
• Failing to do so may result in electric shock or fire.
CAUTION
Take care when cleaning the surface of the heat exchanger of the
outdoor unit since it has sharp edges.
• To avoid cutting your fingers, wear thick cotton gloves when cleaning it.
• This should be done by a qualified technician please contact your installer
or service centre.
Do not clean the inside of the air conditioner by yourself.
• For cleaning inside the appliance, contact your nearest service centre.
• When cleaning the internal filter, refer to the descriptions in the ‘Cleaning
and Maintaining’ section.
• Failure to do may result in damage, electric shock or fire.

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At a Glance
Indoor Unit Overview
At a Glance
Congratulations on the purchase of the air conditioner. We hope you enjoy the features of your
air conditioner and stay cool or warm with optimal efficiency.
Please read the user manual to get started and to make the best use of the air conditioner.
SLIM DUCT TYPE(AJMBLDEH)
MAS DUCT TYPE(AJ052MBMDEH)
NOTE
• Your air conditioner and display may look slightly different from the illustration shown
above depending on your model.
Air intake
Air outlet
Ceiling
Air filter (the return air side)
Air intake
Air outlet
Ceiling
Air filter (the return air side)

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Cleaning and Maintenance
Cleaning the Air Conditioner
Cleaning and Maintenance
Cleaning the air filter
For the best performance from your air conditioner, clean it periodically. When cleaning, make
sure to unplug from the unit for user’s safety.
When cleaning the filter, make sure to unplug the power from the unit. Washable foam based Air
filter captures large particles from the air. The filter is cleaned with a vacuum or by hand washing.
SLIM DUCT TYPE (AJMBLDEH)
1. Slide out the Air lter on the rear side panel to the right side.
2. Clean the Air lter with a vacuum cleaner or soft brush. If dust is too heavy, then rinse it with
running water and dry it in a ventilated area.
• For best conditions, repeat every two weeks.
• If the Air lter dries in a conned (or humid) area, odors may generate. If it occurs,
re-clean and dry it in a ventilated area.
3. Insert the Air lter back in its original position.
NOTE
• The illustration shown above may differ from yours depending on your model.
• After cleaning the filter, press the Filter Reset button on the remote control for 2 seconds to
reset the filler schedule. Filter sign indicator will be on for cleaning time.

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Cleaning and Maintenance
MAS duct type (AJ052MBMDEH)
1. Slide out the Air lter on the rear side panel to the right side.
2. Clean the Air lter with a vacuum cleaner or soft brush. If dust is too heavy, then rinse it with
running water and dry it in a ventilated area.
• For best conditions, repeat every two weeks.
• If the Air lter dries in a conned (or humid) area, odors may generate. If it occurs,
re-clean and dry it in a ventilated area.
3. Insert the Air lter back in its original position.
NOTE
• The illustration shown above may differ from yours depending on your model.
• After cleaning the filter, press the Filter Reset button on the remote control for 2 seconds to
reset the filler schedule. Filter sign indicator will be on for cleaning time.
Cleaning the Air Conditioner

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Cleaning and Maintenance
Maintaining the Air Conditioner
If the air conditioner will not be used for an extended period of time, dry the
air conditioner to maintain in best conditions.
1. Dry the air conditioner thoroughly by operating in Fan mode for 3 to 4 hours and
disconnect the power plug. There may be internal damage if moisture is left in components.
2. Before using the air conditioner again, dry the inner components of the air conditioner
again by running in Fan mode for 3 to 4 hours. This helps remove odours that may have
generated from dampness.
Periodical checks
Refer to the following chart to maintain the air conditioner properly.
Type Description Monthly Every 4
months
Once a
year
Indoor unit
Clean the air filter (1). l
Clean the condensate drain pan (2). l
Thoroughly clean the heat exchanger (2). l
Clean the condensate drain pipe (2). l
Replace the remote control batteries (1). l
Outdoor unit
Clean the heat exchanger on the outside
of the unit (2). l
Clean the heat exchanger on the inside
of the unit (2). l
Clean the electric components with jets
of air (2). l
Verify that all the electric components
are firmly tightened (2). l
Clean the fan (2). l
Verify that all the fan assembly is firmly
tightened (2). l
Clean the condensate drain pan (2). l
NOTE
• The checks and maintenance operations described above are essential to guarantee the
efficiency of the air conditioner. The frequency of these operations may vary depending on
the characteristics of the area, the amount of dust, etc.
a. The above mentioned operations should be performed more frequently if the area of
installation is very dusty.
b. These operations must always be performed by qualified personnel. For more detailed
information, refer to Installation Manual.

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Cleaning and Maintenance
This internal protection operates if an internal fault occurs in the air conditioner.
Type Description
Against cold air The internal fan will be off against cold air when the heat pump is
heating.
De-ice cycle The internal fan will be off against cold air when the heat pump is
heating.
Anti-protection of
internal battery
The compressor will be off to protect internal battery when the air
conditioner operates in Cool mode.
Protect compressor The air conditioner does not start operating immediately to protect
the compressor of the outdoor unit after it has been started.
NOTE
• If the heat pump is operating in Heat mode, the de-ice cycle is actuated to remove frost
from an outdoor unit that may have deposited at low temperatures.
• The internal fan is switched off automatically and restarted only after the de-ice cycle is
completed.
• When the de-ice cycle is operating,it may generate strange sound. It is normal operation for
product safety.
Internal protections via the unit control system
Maintaining the Air Conditioner

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Appendix
Refer to the following chart if the air conditioner operates abnormally. This may save time and
unnecessary expense.
Problem Solution
The air conditioner
does not operate
at all.
• Check if the power plug is properly connected.
• Check whether the auxiliary power switch (MCCB, ELB) is turned on.
• If the auxiliary power switch (MCCB, ELB) is turned off, the air
conditioner does not work although you press the (Power)
button.
• When you clean the air conditioner or do not use it for an extended
period of time, turn off the auxiliary power switch (MCCB, ELB).
• After the air conditioner is not used for an extended period of time,
be sure to turn on the auxiliary power switch (MCCB, ELB) 6 hours
before starting operation.
NOTE
• The auxiliary power switch (MCCB, ELB) is sold separately.
• Make sure that auxiliary power switch (MCCB, ELB) is installed
in the distribution box inside the building.
• If the air conditioner is turned off by the Timed off function, turn on
the air conditioner again by pressing the (Power) button.
The temperature
does not change.
• Check whether the Fan mode is running. In the Fan mode, the air
conditioner controls the set temperature automatically, and you
cannot change the set temperature.
Warm air does not
come out of the air
conditioner.
• Check whether the outdoor unit is designed for cooling only. In
this case, warm air does not come out although you select the Heat
mode.
• Check whether the remote control is designed only for cooling only.
Use a remote control that supports both cooling and heating.
The fan speed does
not change.
• Check whether the Auto or Dry mode is running. In these modes, the
air conditioner controls the fan speed automatically, and you cannot
change the fan speed.
The wireless
remote control
does not operate.
• Check whether the batteries are discharged. Replace the batteries
with new ones.
• Make sure that nothing is blocking the remote control sensor.
• Check whether any strong lighting sources are near the air
conditioner. Strong light which comes from fluorescent bulbs or
neon signs may interfere with the remote control.
Troubleshooting
Appendix

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Appendix
Problem Solution
The wired remote
control does not
operate.
• Check whether the indicator is displayed at the bottom right
of the remote control display. In this case, turn off both the air
conditioner and the auxiliary power switch, and then contact a
service centre.
The air conditioner
is not turned on or
off immediately
with the wired
remote control.
• Check whether the wired remote control is set for group control. In
this case, the air conditioners connected to the wired remote control
are turned on or off sequentially. This operation takes up to 32
seconds.
The Timed on/off
function does not
operate.
• Check whether you pressed the (SET) button on the remote
control after setting the on/off time. Set the on/off time.
The indoor unit
display blinks
continuously.
• Turn on the air conditioner again by pressing the (Power)
button.
• Turn off and then turn on the auxiliary power switch, and then turn
on the conditioner.
• If the indoor unit display is still blinking, contact a service centre.
I want to get
cooler air.
• Operate the air conditioner with a electric fan to save energy and
enhance the cooling efficiency.
The air is not cool
or warm enough.
• In the Cool mode, cool air does not come out if the set temperature
is higher than the current temperature.
– MR-EH00 remote control: Press the Temperature button
repeatedly until the set temperature (minimum: 18°C) is set to
lower than the current temperature.
– AR-KH00E remote control: Press the Temperature button on the
remote control. Then rotate the Wheel until the set temperature
(minimum: 18°C) is set to lower than the current temperature.
• In the Heat mode, warm air does not come out if the set temperature
is lower than the current temperature.
– MR-EH00 remote control: Press the Temperature button
repeatedly until the set temperature (maximum: 30°C) is set to
higher than the current temperature.
– AR-KH00E remote control: Press the Temperature button on the
remote control. Then rotate the Wheel until the set temperature
(maximum: 30°C) is set to higher than the current temperature.
Troubleshooting

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Appendix
Problem Solution
The air is not cool
or warm enough.
• Both cooling and heating do not operate in the Fan mode. Select the
Cool, Heat, Auto, or Dry mode.
• Check whether the air filter is blocked with dirt. A dusty filter may
decrease the cooling and heating efficiencies. Clean the air filter
frequently.
• If a cover is on the outdoor unit or any obstacle is present near the
outdoor unit, remove them.
• Install the outdoor unit in a well-ventilated place. Avoiding places
exposed to direct sunlight or close to a heating appliance.
• Place a sunscreen over the outdoor unit to protect it from direct
sunlight.
• If the indoor unit is installed in a place exposed to direct sunlight,
pull the curtains on the windows.
• Close the windows and doors to maximize the cooling and heating
efficiencies.
• If the Cool mode is stopped and then started immediately, cool air
comes out after about 3 minutes to protect the compressor of the
outdoor unit.
• When the Heat mode is started, warm air does not come out
immediately to prevent cool air from coming out at the beginning.
• If the refrigerant pipe is too long, the cooling and heating
efficiencies may be decreased. Avoid exceeding the maximum pipe
length.
The air conditioner
makes strange
noises.
• In certain conditions (especially, when the outdoor temperature is
lower than 20°C), a hissing, rumbling, or splashing sound may be
heard while the refrigerant is circulating through the air conditioner.
This is a normal operation.
• When you press the (Power) button on the remote control, noise
may be heard from the drain pump inside the air conditioner. This
noise is a normal sound.
Unpleasant odours
permeate the
room.
• If the air conditioner is running in a smoky area or if there is a smell
entering from outside, ventilate the room properly.
• If both indoor temperature and indoor humidity are high, operate
the air conditioner in the Clean or Fan mode for 1 to 2 hours.
• If the air conditioner has not been operated for an extended period
of time, clean the indoor unit and then operate the air conditioner
in the Fan mode for 3 to 4 hours to dry the inside of the indoor unit
for removal of unpleasant odours.
• If the air filter blocked with dirt, clean the air filter.

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Appendix
Problem Solution
Steam is produced
on the indoor unit.
• In winter, if the indoor humidity is high, steam may be produced
around the air outlet while the defrost function is running. This is a
normal operation.
The outdoor unit
fan continues to
operate when the
air conditioner is
turned off.
• W hen the air conditioner is turned off, the outdoor unit fan may
continue to operate to reduce noise of the refrigerant gas. This is a
normal operation.
Water drops
from the piping
connections of the
outdoor unit.
• Condensation may develop due to the difference in temperature.
This is a normal condition.
Steam is produced
on the outdoor
unit.
• In winter, when the air conditioner runs in the Heat mode, the frost
on the heat exchanger melts and steam may be produced. This is a
normal operation, neither product malfunction nor a fire.
Troubleshooting

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Appendix
Operating temperature and humidity
Mode Outdoor temperature Indoor temperature Indoor humidity
Cool mode -5°C to 43°C 16°C to 32°C 80% or less
Heat mode -15°C to 24°C 27°C or less -
Dry mode -5°C to 43°C 16°C to 32°C -
CAUTION
• If you use the air conditioner at a relative humidity above 80%, it may cause a formation of
condensation and a leakage of water on the floor.
Operation Features

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