Samsung ND112HHXEB, ND140HHXEA, ND128HHXEB User Manual

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Features of your new air conditioner

• Cool Summer Oer

On those hot sweltering summer days and long restless nights, there is no better escape
from the heat than the cool comforts of home. Your new air conditioner brings an end to
exhausting hot summer days and lets you rest. This summer, beat the heat with your own
air conditioner.

• Cost Ecient System

Your new air conditioner not only provides maximum cooling power in the summer, but can
also be an ecient heating method in the winter with the advanced “Heat pump” system.
This technology is up to 300% more ecient than electrical heating, so you can further
reduce its running cost. Now, meet year-round needs with one air conditioner.

• Flexible installation

Duct type air conditioner is designed to be slimmer and oers dierent solutions for any
shape room allowing for specic air ow requirements. Also, the air intake can be set up on
either the bottom or rear of the unit, so there is more exibility in installation.

For easy future reference, write the model and serial
number down. You will nd your model number on the
bottom right side of the air conditioner.

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Model #
Serial #

Contents

USING PARTS

Safety precautions .................................................................................................................................................... 4

Viewing your air conditioner .................................................................................................................................. 8

HSP duct type .............................................................................................................................................................................................. 8

Using your air conditioner ...................................................................................................................................... 9

Tips on using your air conditioner ...................................................................................................................................................... 9

Cleaning the air conditioner ................................................................................................................................. 10

Maintaining your air conditioner ...................................................................................................................................................... 10

Appendix ................................................................................................................................................................... 12

Troubleshooting ....................................................................................................................................................................................... 12

Operation ranges ..................................................................................................................................................................................... 13

INSTALLATION PARTS

Safety precautions ................................................................................................................................................... 14

Accessories ................................................................................................................................................................. 16

Selecting the installation location .......................................................................................................................17

Indoor unit installation ..........................................................................................................................................19

Purging the unit .......................................................................................................................................................20

Connecting the refrigerant pipe .......................................................................................................................... 21

Cutting/aring the pipes ........................................................................................................................................ 22

Performing leak test & insulation ........................................................................................................................ 23

Drain pipe and drain hose installation ...............................................................................................................25

Wiring work ...............................................................................................................................................................29

Assigning address to indoor unit ......................................................................................................................... 32

Additional functions ............................................................................................................................................... 33

Final check and trial operation ............................................................................................................................. 34

Providing information for user .............................................................................................................................34

Troubleshooting .......................................................................................................................................................36

Option table .............................................................................................................................................................. 37

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USING PARTS

ASafety precautions

Before using your new air conditioner, please read this manual thoroughly to ensure that you know how to
safely and eciently 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 dier slightly from those described in this manual. If you have any questions, call your nearest contact
center or nd help and information online at www.samsung.com.

Important safety symbols and precautions:

WARNING

CAUTION

FORINSTALLATION

Plug the power cord into a wall socket with the power specications of the product or higher and use the
socket for this appliance only. In addition, do not use an extension cord.



Sharing a wall socket with other appliances using a power strip or extending the power cord may result in
electric shock or re.



Do not use an electric transformer. It may result in electric shock or re.



If the voltage/frequency/rated current condition is dierent, it may cause re.

The installation of this appliance must be performed by a qualied 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 rmly 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, inammable 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.

FORINSTALLATION

This appliance should be positioned in such a way that it is accessible to the power plug.



Failing to do so may result in electric shock or fire due to electric leakage.

Install your appliance on a level and hard oor that can support its weight.



Failing to do so may result in abnormal vibrations, noise, or problems with the product.

4

Hazards or unsafe practices that may result in severepersonalinjuryordeath.

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.

Unplug the power plug from the wall socket.

Do NOT disassemble.

WARNING

CAUTION

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FORINSTALLATION

CAUTION

Install the draining hose properly so that water is drained correctly.



Failing to do so may result in water overflowing and property damage.

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

Remove all foreign substances such as dust or water from the power plug terminals and contact points
using a dry cloth on a regular basis.



Unplug the power plug and clean it with a dry cloth.



Failing to do so may result in electric shock or fire.

Plug the power plug into the wall socket in the right direction so that the cord runs towards the oor.



If you plug the power plug into the socket in the opposite direction, the electric wires within the cable may be
damaged and this may result in electric shock or fire.

When the appliance or power plug or power cord is damaged, contact your nearest service center.

Plug the power plug into the wall socket rmly. Do not use a damaged power plug, damaged power cord
or loose wall socket.



This may result in electric shock or fire.

Do not pull the power cord, when unplugging the power plug.



Unplug the power plug by holding the plug.



Failing to do so may result in electric shock or fire.

Do not pull or excessively bend the power cord. Do not twist or tie the power cord. Do not hook the
power cord over a metal object, place a heavy object on the power cord, insert the power cord between
objects, or push the power cord into the space behind the appliance.



This may result in electric shock or fire.

FORPOWERSUPPLY

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.

FORUSING

WARNING

If the appliance is ooded, please contact your nearest service center.



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 center.



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 plug. Do not touch the appliance or power cord.



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 center.



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 center.

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A

Safety precautions

FORUSING

WARNING

Do not touch the power plug or the circuit breaker with wet hands.



This may result in electric shock.

Do not unplug the power plug or turn the air conditioner o with the circuit breaker while it is operating.



Plugging the power plug into the wall outlet or turning the air conditioner on from the circuit breaker may cause a
spark and result in electric shock or fire.

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 insert your ngers 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 inrm 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 o and then contact your nearest service center.



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 cooper, steel wire, etc.)other than the standard fuse.



Failing to do so may result in electric shock, fire, problems with the product, or injury.

FORUSING

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 eciency.

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.

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FORUSING

CAUTION

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 ow from the air conditioner for long
periods of time.



This may result in harm to humans, animals or plants.

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 or alcohol to
clean the appliance.



This may result in discoloration, deformation, damage, electric shock or re.

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 re.

FORCLEANING

CAUTION

Take care when cleaning the surface of the heat exchanger of the outdoor unit since it has sharp edges.



To avoid cutting your ngers, wear thick cotton gloves when cleaning it.

Do not clean the inside of the air conditioner by yourself.



For cleaning inside the appliance, contact your nearest service center.



Failure to do may result in damage, electric shock or re.

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Viewing your air conditioner

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 eciency.

Please read the user manual to get started and to make the best use of the air conditioner.

HSPDUCTTYPE

Ceiling

Air intake

Air outlet

Your air conditioner may slightly look dierent from illustration shown above depending on
your model.

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Using your air conditioner

TIPSONUSINGAIRCONDITIONER

Here are some tips that you would follow when using your air conditioner.

TOPIC RECOMMENDATION

Cooling • If current outside temperatures are much higher than the selected indoor

temperature, it may take time to bring the inner temperature to the desired
coolness.

• Avoid drastically turning down the temperature.
Energy is wasted and the room does not cool faster.

Heating • Since the air conditioner heats the room by taking heat energy from

outdoor air, the heating capacity may decrease when outdoor temperatures
are extremely low. If you feel the air conditioner insuciently heats, using
an additional heating appliance in combination with the air conditioner is
recommended.

Frost & De-ice • When the air conditioner runs in Heat mode, due to temperature dierence

between the unit and the outside air, frost will form.

 If this happens:
 - The air conditioner stops heating.

 - The air conditioner will operate automatically in De-ice mode for

10 minutes.

 - The steam produced on the outdoor unit in De-ice mode is safe.

 No intervention is required; after about 10 minutes, the air conditioner

operates again normally.

 The unit will not operate when it starts to de-ice.

Fan • Fan may not operate for about 3~5 minutes at the beginning to prevent any

cold blasts while the air conditioner is warming up.

High indoor/outdoor
temperatures

Power failure • If a power failure occurs during the operation of the air conditioner, the

Protection
mechanism

• If both indoor and outdoor temperatures are high and the air conditioner is
running in Heat mode, the outdoor unit’s fan and compressor may stop at
times. This is normal; wait until the air conditioner turns on again.

operating immediately stops and unit will be o. When power returns, the
air conditioner will run automatically.

• If the air conditioner has just been turned on after operation stops or being
plugged in, cool/warm air does not come out for 3 minutes to protect the
compressor of the outdoor unit.

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Cleaning the air conditioner

For the best performance from your air conditioner, clean it periodically. When cleaning, make sure to
unplug from the unit for user’s safety.

MAINTAININGYOURAIRCONDITIONER

If the air conditioner will not be used for an extended period of time, dry the air conditioner to maintain it
in best condition.

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 odors which may have generated from
dampness.

Periodical checks

Refer to the following chart to maintain the air conditioner properly.

Type Description Monthly

Clean the air filter (1)

Clean the condensate drain pan (2)

Indoor

unit

Outdoor

unit

Thoroughly clean the heat exchanger (2)

Clean the condensate drain pipe (2)

Replace the remote control batteries (1)

Clean the heat exchanger on the outside of the
unit (2)

Clean the heat exchanger on the inside of
the unit (2)

Clean the electric components with jets of
air (2)

Verify that all the electric components are firmly
tightened (2)

Clean the fan (2)

Verify that all the fan assembly is firmly
tightened (2)

Clean the condensate drain pan (2)

The checks and maintenance operations described are essential to guarantee the
eciency of the air conditioner. The frequency of these operations varies according to the
characteristics of the area, the amount of dust, etc.

(1) The described operations should be performed more frequently if the area of

installation is very dusty.

(2) These operations must always be performed by qualied personnel. For more detailed

information, see the Installation Manual.



Every4
months





Oncea

year



















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MAINTAININGYOURAIRCONDITIONER

Internal protections via the unit control system

This internal protection operates if an internal fault occurs in the air conditioner.

Type Description

Against cold air

De-ice cycle

Anti-protection of

internal battery

Protect

compressor

If the heat pump is operating in Heat mode, De-ice cycle is actuated to remove frost from an
outdoor unit that may have deposited at low temperatures.

The internal fan is switched o automatically and restarted only after the de-ice cycle is
completed.

The internal fan will be off to against cold air when the heat pump is heating.

The internal fan will be off to against cold air when the heat pump is heating.

The compressor will be off to protect internal battery when the air conditioner
operates in Cool mode.

The air conditioner does not start operating immediately to protect the com­pressor of the outdoor unit after it has been started.

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Appendix

TROUBLESHOOTING

Refer to the following chart if the air conditioner operates abnormally. This may save time and
unnecessary expenses.

PROBLEM SOLUTION

The air conditioner does not
operate immediately after it has
been restarted.

The air conditioner does not work
at all.

The temperature does not change. • Check if you selected Fan mode.

The cool (warm) air does not come
out of the air conditioner.

The cool (warm) air does not come
out of the air conditioner.

The fan speed does not change. • Check if you selected Auto or Dry mode.

Timer function does not set. • Check if you press the Power button on the remote control after you have set the time.
Odors permeate in the room

during operation.

The air conditioner makes a
bubbling sound.

Water is dripping from the air ow
blades.

Remote control is not working. • Check if your batteries are depleted.

The air conditioner does not turn
on or o with the wired remote
control.

The wired remote control does not
operate.

The indicators of the digital display
ashes.

• Because of the protective mechanism, the appliance does not start operating
immediately to keep the unit from overloading.
The air conditioner will start in 3 minutes.

• Check that the power plug is properly connected. Insert the power plug into the wall
socket correctly.

• Check if the circuit breaker is switched o.

• Check if there is a power failure.

• Check your fuse. Make sure it is not blown out.

Press the Mode button on the remote control to select another mode.

• Check if the set temperature is higher (lower) than the current temperature. Press the
Temperature button on the remote control to change the set temperature. Press the
Temperature button to decrease or increase the temperature.

• Check if the air lter is blocked by dirt.

• Check if the air conditioner has just been turned on. If so, wait 3 minutes. Cool air does

not come out to protect the compressor of the outdoor unit.

• Check if the air conditioner is installed in a place with a direct exposure to sunlight.
Hang curtains on windows to boost cooling eciency.

• Check if the cover or any obstacle is not near the outdoor unit.

• Check if the refrigerant pipe is too long.

• Check if the air conditioner is only available in Cool mode.

• Check if the remote control is only available for cooling model.

The air conditioner automatically adjusts the fan speed to Auto in Auto/Dry mode.

• Check if the appliance is running in a smoky area or if there is a smell entering from
outside. Operate the air conditioner in Fan mode or open the windows to air out the
room.

• A bubbling sound may be heard when the refrigerant is circulating through the
compressor. Let the air conditioner operate in a selected mode.

• When you press the Power button on the remote control, noise may be heard from the
drain pump inside the air conditioner.

• Check if the air conditioner has been cooling for an extended period of time with the
air ow blades pointed downwards. Condensation may generate due to the dierence
in temperature.

• Make sure batteries are correctly installed.

• Make sure nothing is blocking your remote control sensor.

• Check that there are strong lighting apparatus near the air conditioner. Strong light

which comes from uorescent bulbs or neon signs may interrupt the electric waves.

• Check if you set the wired remote control for group control.

• Check if TEST indicator is displayed on the wired remote control. If so, turn o the unit

and switch o the circuit breaker. Call your nearest contact center.

• Press the Power button on the remote control to turn the unit o and switch the
circuit breaker o. Then, switch it on again.

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OPERATIONRANGES

The table below indicates the temperature and humidity ranges the air conditioner can be operated
within. Refer to the table for ecient use.

MODE

COOLING 18˚C to 32˚C -5˚C to 43˚C

HEATING 27˚C or less -20˚C to 24˚C -

DRYING 18˚C to 32˚C -5˚C to 43˚C -

The standardized temperature for heating is 7˚C. If the outdoor temperature drops to 0˚C or below,
the heating capacity can be reduced depending on the temperature condition.

If the cooling operation is used at over 32˚C (indoor temperature), it does not cool at its full capacity.

OPERATIONALTEMPERATURE

INDOOR OUTDOOR

INDOOR

HUMIDITY

80%

or less

IFOUTOFCONDITIONS

Condensation may occur on the
indoor unit with risk to have either
water blow o or drops on the
oor.

Internal protection triggers and the
air conditioner will stop.

Condensation may occur on the
indoor unit with risk to have either
water blow o or drops on the
oor.

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INSTALLATION PARTS

General information

installinG the unit

Safety precautions

(Carefully follow the precautions listed below because they are essential to guarantee the safety of the
equipment.)

WARNING

 Carefully read the content of this manual before installing the air conditioner and store the manual in a safe place in

order to be able to use it as reference after installation.

 For maximum safety, installers should always carefully read the following warnings.
 Store the operation and installation manual in a safe location and remember to hand it over to the new owner if the

air conditioner is sold or transferred.

 This manual explains how to install an indoor unit with a split system with two SAMSUNG units. The use of other types

of units with different control systems may damage the units and invalidate the warranty. The manufacturer shall not
be responsible for damages arising from the use of non compliant units.

 The air conditioner is compliant with the requirements of the Low Voltage Directive (72/23/EEC),

the EMC Directive (89/336/EEC), and the Directive on pressurized equipment (97/23/EEC).



The manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection
of electric and hydraulic lines. Failure to comply with these instructions or to comply with the requirements set forth in the
“Operating limits” table, included in the manual, shall immediately invalidate the warranty.

 The air conditioner should be used only for the applications for which it has been designed: the indoor unit is not

suitable to be installed in areas used for laundry.

 Do not use the units if damaged. If problems occur, switch the unit off and disconnect it from the power supply.
 In order to prevent electric shocks, fires or injuries, always stop the unit, disable the protection switch and contact

SAMSUNG’s technical support if the unit produces smoke, if the power cable is hot or damaged or if the unit is very
noisy.

 Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly.

These operations should be performed by qualified personnel only.

 The unit contains moving parts, which should always be kept out of the reach of children.
 Do not attempt to repair, move, alter or reinstall the unit. If performed by unauthorized personnel, these operations

may cause electric shocks or fires.

 Do not place containers with liquids or other objects on the unit.


All the materials used for the manufacture and packaging of the air conditioner are recyclable.

 The packing material and exhaust batteries of the remote control(optional) must be disposed of in accordance with

current laws.

 The air conditioner contains a refrigerant that has to be disposed of as special waste. At the end of its life cycle, the air

conditioner must be disposed of in authorized centers or returned to the retailer so that it can be disposed of correctly
and safely.

• Always disconnect the air conditioner from the power supply before servicing it or
accessing its internal components.

•

Verify that installation and testing operations are performed by qualified personnel.

• Verify that the air conditioner is not installed in an easily accessible area.

IMPORTANT:When installing the unit, always remember to connect first the refrigerant tubes, then the electrical lines.

 Upon receipt, inspect the product to verify that it has not been damaged during transport. If the product appears

damaged, DO NOT INSTALL it and immediately report the damage to the carrier or retailer (if the installer or the
authorized technician has collected the material from the retailer.)

 After completing the installation, always carry out a functional test and provide the instructions on how to operate

the air conditioner to the user.

 Do not use the air conditioner in environments with hazardous substances or close to equipment that release free

flames to avoid the occurrence of fires, explosions or injuries.

 The air conditioner should be used only for the applications for which it has been designed: the indoor unit is not

suitable to be installed in areas used for laundry.

Always disassemble the electric lines before the refrigerant tubes.

14

Duct_AVXDS@@_IB_E 32725-2.10.10.06.indd 14 2011-1-22 14:40:09

 Our units must be installed in compliance with the spaces indicated in the installation manual to ensure either

Power suPPly line, fuse or circuit breaker

accessibility from both sides or ability to perform routine maintenance and repairs. The units’ components must be
accessible and that can be disassembled in conditions of complete safety either for people or things.
For this reason, where it is not observed as indicated into the Installation Manual, the cost necessary to reach and repair
the unit (in safety, as required by current regulations in force) with slings, trucks, scaffolding or any other means of
elevation won’t be considered in-warranty and charged to end user.

 Always make sure that the power supply is compliant with current safety standards. Always install the air conditioner in

compliance with current local safety standards.

 Always verify that a suitable grounding connection is available.
 Verify that the voltage and frequency of the power supply comply with the specifications and that the installed power is

sufficient to ensure the operation of any other domestic appliance connected to the same electric lines.

 Always verify that the cut-off and protection switches are suitably dimensioned.
 Verify that the air conditioner is connected to the power supply in accordance with the instructions provided in the

wiring diagram included in the manual.

 Always verify that electric connections (cable entry, section of leads, protections…) are compliant with the electric

specifications and with the instructions provided in the wiring scheme. Always verify that all connections comply with
the standards applicable to the installation of air conditioners.

 Make sure that you earth the cables.

- Do not connect the earth wire to the gas pipe, water pipe, lighting rod or telephone wire.
If earthing is not complete, electric shock or fire may occur.

 Install the circuit breaker.

- If the circuit breaker is not installed, electric shock or fire may occur.

 Make sure that the condensed water dripping from the drain hose runs out properly and safely.
 Install the power cable and communication cable of the indoor and outdoor unit at least 1m

away from the electric appliance.

 Install the indoor unit away from lighting apparatus using the ballast.

- If you use the wireless remote control, reception error may occur due to the ballast of the
lighting apparatus.

 Do not install the air conditioner in following places.

- Place where there is mineral oil or arsenic acid.

Resin parts flame and the accessories may drop or water may leak.
The capacity of the heat exchanger may reduce or the air conditioner may be out of order.

- The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air
outlet.
The copper pipe or connection pipe may corrode and refrigerant may leak.

- The place where there is a machine that generates electromagnetic waves.
The air conditioner may not operate normally due to control system.

- The place where there is a danger of existing combustible gas, carbon fiber or flammable

dust.
The place where thinner or gasoline is handled.
Gas may leak and it may cause fire.

15

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Accessories

The following accessories are supplied with the indoor unit.
The type and quantity may differ depending on the specifications.

User & Installation

manual

Insulation cover

drain

Pattern sheet

Insulation pipe in

Insulation cover

pipe in

Insulation pipe out

RubberClamp hoseFlexible hose

Insulation cover

pipe out

Cable tie

16

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Selecting the installation location

IndoorUnit

 There must be no obstacles near the air inlet and outlet.

 Install the indoor unit on a ceiling that can support its weight.

 Maintain sufficient clearance around the indoor unit.

 Make sure that the water dripping from the drain hose runs away correctly and safely.

 The indoor unit must be installed in this way, that they are out of public access. (Not touchable by the

users)



After connecting a chamber, insulate the connection part between the indoor unit and the chamber
with t10 or thicker insulation. Otherwise, there can be air leak or dew from the connection part.

 Rigid wall without vibration.

 Where it is not exposed to direct sunshine.

 Where the air filter can be removed and cleaned easily.

Spacerequirementsforinstallation&service



Construction Standard for Inspection Hole.

1) In case, the ceiling is textile, Inspection hole dose not need.

2) In case, the ceiling is plaster board, Inspection hole depends on Inside height of the ceiling.
a. Height is more than 1m : Only “B” [Inspection for PBA] is applied.
b. Height is less than 1m : Both “A” & ”B” are applied.
c. “A” & ”B” are inspection holes.

20mm or more

Unit Depth(D)+50mm

 You must have 20mm or more space between the ceiling and the bottom of indoor unit. Otherwise, the noise from

the vibration of indoor unit may bother the user.When the ceiling is under construction, the hole for check-up must
be made to take service, clean and repair the unit.

 It is possible to install the unit at an height of between 2.2~2.5m from the ground, if the unit has a duct with a well

defined lenght (300mm or more), to avoid fan motor blower contact.

Unit Width(W)

“A”=W+100mm “B”=500mm

20mm or more

D

B

Back

InsulationGuide

Thickness:more than 10mm


 I nsulate the end of the pipe and some curved area

by using separate insulator.

 I nsulate the discharge and suction part at the same time

when you insulate connection duct.

Indoor unit A B C D E Front Back

HSP Duct

Duct_AVXDS@@_IB_E 32725-2.10.10.06.indd 17 2011-1-22 14:40:12

14.0kW

(1200x650x360)

1200x650 1200x650 650x360 650x360 -

Front

A

Insulate the front and back side

in proper size at the same time

when insulating the suction

duct and discharge duct.

C

17

A

700

Selecting the installation location

ND140HH

20-ø3.2hole

(All around)

6

1236 (Suspension position)

Discharge side

Unit : mm

650

534 (Suspension position)

1200

6×150=900

1000 (Air outlet duct flange)

86 222

253

360

2×100=200

2

1

5

3

8

7

1200

1300500

OD32

28
121
137

Suction side

80

170

244

299

4

Inspection hole

No. Name Description

1 Liquid pipe connection

2 Gas pipe connection

3 Drain pipe connection

4 Drain pipe connection (Option drain pump)

ø15.88

VP25 (OD

VP25 (OD

ø9.52

(3/8”)

(5/8”)

ø32, ID ø25)

ø32, ID ø25)

5 Power supply/Communication connection

6 Air discharge grille flange

7 Suction Flange

8 Hook

3/8”

or M10

18

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Indoor unit installation

It is recommended to install theY-joint before installing the
indoor unit.

Place the pattern sheet on the ceiling at the spot where

1

you want to install the indoor unit.

Note Since the diagram is made of paper, it may

Insert bolt anchors, use existing ceiling supports or

2

construct a suitable support as shown in figure.

Install the suspension bolts depending on the ceiling

3

type.

 Ensure that the ceiling is strong enough to



 If this is not possible, create an opening on

shrink or stretch slightly due to temperature
or humidity. For this reason, before drilling
the holes maintain the correct dimensions
between the markings.

support the weight of the indoor unit.
Before hanging the unit, test the strength of
each attached suspension bolt.

If the length of suspension bolt is more

than 1.5m, it is required to prevent vibration.

the false ceiling in order to be able to use it
to perform the required operations on the
indoor unit.

Hole in anchor
Hole in plug

Suspension bolt(

Concrete

3/8”

or M10)

Ceiling support

Insert

Screw eight nuts to the suspension bolts making space

4

for hanging the indoor unit.

 You must install the suspension bolts more

Hang the indoor unit to the suspension bolts between

5

two nuts.

Note Piping must be laid and connected inside

Screw the nuts to suspend the unit.

6

Adjust level of the unit by using measurement plate for

7

all 4 sides.

Note For proper drainage of condensate, give a

than four when installing the indoor unit.

the ceiling when suspending the unit. If the
ceiling is already constructed, lay the piping
into position for connection to the unit
before placing the unit inside the ceiling.

'A' slant to the left or right side of the unit
which will be connected with the drain hose,
as shown in the figure. Make a tilt when you
wish to install the drain pump, too.

Rubber

A

Drain hose port

A

ND140HH 10mm

19

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Purging the unit

On delivery, the indoor unit is loaded with inert gas.
All this gas must therefore be purged before connecting the
assembly piping. To purge the inert gas, proceed as follows.

Unscrew the pinch pipe at the end of each refrigerant pipe.

Result: All inert gas escapes from the indoor unit.

Note To prevent dirt or foreign objects from getting

into the pipes during installation, do NOT remove
the pinch pipe completely until you are ready to
connect the piping.

 The designs and shape are subject to change

according to the model.

20

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AConnecting the refrigerant pipe

A

There are two refrigerant pipes of differing diameters:

 A smaller one for the liquid refrigerant
 A larger one for the gas refrigerant
 The inside of copper pipe must be clean & has no dust.

The connection procedure for the refrigerant pipes varies
according to the exit position of the pipes from the indoor unit,
as seen when facing the indoor in the “A” side.

 Liquid refrigerant port
 Gas refrigerant port
 Drain hose port

1

Remove the pinch pipe on the pipes and connect the
assembly pipes to each pipe, tightening the nuts, first
manually and then with a torque wrench, a spanner applying
the following torque.

Outer Diameter Torque (kgf•cm)

6.35 mm (1/4") 145~175

9.52 mm (3/8") 333~407

12.70 mm (1/2") 505~615

15.88 mm (5/8") 630~769

Note Must apply refrigerant oil on the flaring area to

prevent a leak.

Be sure that there must be no crack or kink on the bended area.

2

Refrigerant oil

Torque wrench

Flare nut

Liquid refrigerant port

Gas
refrigerant port

Drain hose connection port

Spanner

Union

 The designs and shape are subject to change

according to the model.

21

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Cutting/aring the pipes

1

Make sure that you prepared the required tools.
(pipe cutter, reamer, flaring tool and pipe holder)

If you want to shorten the pipe, cut it using a pipe cutter ensuring that

2

the cut edge remains at 90° with the side of the pipe. There are some
examples of correctly and incorrectly cut edges below.

To prevent a gas leak, remove all burrs at the cut edge of the pipe using a

3

reamer.

Carry out flaring work using flaring tool as shown below.

4

Flaring tool

Clutch type Wing nut type

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Oblique Rough Burr

A

Die

Copper pipe

A(mm)

Flare tool for

R410A clutch type

0~ 0.5 1.0~ 1.5 1.5~2.0
0~ 0.5 1.0~ 1.5 1.5~2.0
0~ 0.5 1.0~ 1.5 1.5~2.0
0~ 0.5 1.0~ 1.5 1.5~2.0

Clutch type Wing nut type

Flare nut

Conventional flare tool

Copper
pipe

York

Die

Check if you flared the pipe correctly. There are some examples of

5

incorrectly flared pipes below.

Inclined Damaged Surface Cracked Uneven Thickness

Align the pipes and tighten the flare nuts first manually and then with a

6

torque wrench, applying the following torque.

Outer diameter

(mm)

6.35 145~175 8.70 ~9.10

9.52 333~407 12.80~13.20

12.70 505~615 16.20~16.60

15.88 630~769 19.30~19.70

Connection

Torque(kgf•cm)

Flare dimension

(mm)

Flare shape

(mm)

±2°

45°

90° ±2°

R 0.4~0.8

In case of needing brazing, you must work with Nitrogen gas blowing.

22

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Performing leak test & insulation

A

Leaktest

LEAK TEST WITH NITROGEN (before opening valves)

In order to detect basic refrigerant leaks, before recreating the
vacuum and recirculating the R410A, it’s responsible of installer
to pressurize the whole system with nitrogen (using a pressure
regulator) at a pressure above 4.1MPa (gauge).

LEAK TEST WITH R410A (after opening valves)

Before opening valves, discharge all the nitrogen into the system
and create vacuum. After opening valves check leaks using a
leak detector for refrigerant R410A.

Leak check

Discharge all the nitrogen to create a vacuum and
charge the system.

Insulation

Once you have checked that there are no leaks in the system,
you can insulate the piping and hose.

1

To avoid condensation problems, place T13.0orthicker
AcrylonitrileButadienRubberseparately around each

refrigerant pipe.

Note Always make the seam of pipes face upwards.

2

Wind insulating tape around the pipes and drain hose
avoiding to compress the insulation too much.

Finish wrapping insulating tape around the rest of the

3

pipes leading to the outdoor unit.

The pipes and electrical cables connecting the indoor

4

unit with the outdoor unit must be fixed to the wall with
suitable ducts.

 The designs and shape are subject to change

according to the model.

No gap

NBR(T13.0 or thicker)

Insulation cover pipe

Insulation pipe

Indoor unit

All refrigerant connection must be accessible, in order
to permit either unit maintenance or removing it
completely.

Must fit tightly against body

Be sure to overlap
the insulation

without any gap.

23

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Performing leak test & insulation

Select the insulator of the refrigerant pipe.

5

 Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.
 Indoor temperature of 30°C and humidity of 85% is the standard condition.

If install in a high humidity condition,use one grade thicker insulator by

referring to the table below.
If installing in an unfavorable conditions, use thicker one.
 Insulator’s heat-resistance temperature should be more than 120°C.

Insulation Type(Heating/Cooling)

Pipe Pipe size

Liqued Φ6.35~Φ9.52 9t

pipe Φ12.7~Φ50.80 13t

Gas
Pipe

Φ6.35 13t 19t

Φ9.52
Φ12.70
Φ15.88
Φ19.05
Φ22.23
Φ25.40
Φ28.58
Φ31.75
Φ38.10
Φ44.45
Φ50.80 25t 38t

Standard

[30°C

,85%

19t

Refrigerant pipe before EEV kit and MCU or without EEV kit and MCU

 You can contact the gas side and liquid side pipes but the

pipes should not be pressed.



When contacting the gas side and gas side pipe, use 1 grade
thicker insulator.

Refrigerant pipe after EEV kit



Install the gas side and liquid side pipes, leave 10mm of space.



When contacting the gas side and liquid side pipe, use 1 grade

and MCU

thicker insulator.

High humidity

]

[30°C

EPDM,NBR

,over85%

←

←

25t

32t

Remarks

]

Internal temperature

is higher than 120°C

Insulation

Gas pipe

10mm

10mm 10mm

Gas pipe

Insulation

Liquid pipe

Liquid pipe

 Install the insulation not to get wider and use the adhesives on the connection part of it to

prevent moisture from entering.

 Wind the refrigerant pipe with insulation tape if it is exposed to outside sunlight.

 Install the refrigerant pipe respecting that the insulation does not get thinner on the bent

part or hanger of pipe.

 Add the additional insulation if the insulation plate gets thinner.

a× 3

Hanger

a

Refrigerant pipe insulation

Additional insulation

24

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Drain pipe and drain hose installation

Insert the flexible hose to the drain hose port.

1

Note

Fix the flexible hose to the indoor unit with the
supplied cable clamp securely.
(Use the screwdriver to fix the flexible hose
securely.)

Install the drain hose so that its length can be as short as

2

possible.
Internal diameter of the drain hose should be the same or
slightly bigger than the external diameter of the drain hose
port.

 Inner diameter of the drain hose

32mm(Inner diameter)

Note

Wrap the drain hose with the insulation drain as shown in

3

figure and secure it.

 Give a slightly slant to the drain hose for proper

drainage of condensate.

 Fix the flexible hose to the PVC with the

supplied cable tie securely.

Cable-tie

Clamp

Flexible hose

Indoor
Unit

Insulation drain hose

Insulation cover drain

Must fit tightly against
body without any gap.

No gap

25

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Drain pipe and drain hose installation

DrainpipeConnection

Without the drain pump

Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m.

1

Install U-trap at the end of the drainpipe to prevent a nasty smell to reach the indoor unit.

2

Do not install the drainpipe to upward position. It may cause water flow back to the unit.

3

Flexible hose

Ceiling

1~1.5m

Horizontal drainpipe
more than 1/100 slope

Hanger

With the drain pump

The drain pipe should be installed within 300mm to 550mm from the flexible hose and then lift

1

down 20mm or more.

Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m.

2

Install the air vent in the horizontal drainpipe to prevent water flow back to the indoor unit.

3

You may not need to install it if there were proper slope in the horizontal drainpipe.Note

The flexible hose should not be installed upward position, it may cause water flow back to the

4

indoor unit.

Air vent

300mm or less

Flexible hose

200mm
or more

20mm
or more

Within
300~550mm

1~1.5m

Hanger

Horizontal drainpipe
more than 1/100 slope

Ceiling

26

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CentralizedDrainage

Without the drain pump

Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m.

1

Install U-trap at the end of the drainpipe to prevent a nasty smell to reach the indoor unit.

2

100mm or more

Ceiling

Horizontal drainpipe
more than 1/100 slope

With the drain pump

Install main air vent at the front of the farthest indoor unit from the main drain when installed

1

indoor units are more than 3.

You may need to install individual air vent to prevent water flow back at the top of each indoor unit

2

drainpipe.

Hanger

Main drainpipe

Individual

air vent

1~1.5m

Centralized horizontal drainpipe
(more than 1/100 slope)

Main air vent

550mm or
less

27

Duct_AVXDS@@_IB_E 32725-2.10.10.06.indd 27 2011-1-22 14:40:24

A

Drain pipe and drain hose installation

Testingthedrainage

Prepare a little water about 2 liters.

1

Pour water into the base pan in the indoor unit as shown in
figure.

2

Confirm that the water flows out through the drain hose.

When the drain pump is installed, operate the unit as cooling

3

mode and check a drain pump pumping.

Check drain water drops at the end of the drain pipe.

4

Drainpipe

Drain water drops

Make sure there is no water leak at the drainage.

5

Reassemble the cover of water supply intake.

6

28

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Wiring work

Powerandcommunicationcableconnection

Before wiring work, you must turn off all power source.

1

Indoor unit power should be supplied through the breaker( ELCB or MCCB+ELB ) separated by the

2

outdoor power.
ELCB:Earth Leakage Circuit Breaker
MCCB:Molded Case Circuit Breaker
ELB:Earth Leakage Breaker

The power cable should be used only copper wires.

3

Connect the power cable{1(L), 2(N)} among the units within maximum length and communication

4

cable(F1, F2) each.

Connect V1, V2(for DC12V) and F3, F4(for communication) when installing the wired remote control.

5

Outdoor Unit

Wired Remote

Control

220-240V~

or

MCCB+

ELCB

ELB

N L

Indoor Unit 1 Indoor Unit 2 Indoor Unit 3

ELCB : Essential Installation



WARNING :
Power off before connecting any wires;
Indoor PBA will be damaged while V1,V2,F3,F4 short each
other.

Indoor Unit 4 Indoor Unit 5 Indoor Unit 6

Ceiling, wall-mounted indoor unit.



EEV kit

N L N L N L

Selectingcompressedringterminal

Silver solder

Norminal

dimensions

Duct_AVXDS@@_IB_E 32725-2.10.10.06.indd 29 2011-1-22 14:40:25

Norminal

dimensions

for cable

for screw

(mm2)

(mm)

1.5

2.5

4 6.6
4 8
4 6.6
4 8.5

4 4 9.5 ±0.2 5.6

B D d1 E F L d2 t

Standard

dimension

(mm)

Allowance

(mm)

±0.2 3.4

±0.2 4.2

Standard

dimension

(mm)

Allowance

(mm)

+0.3

-0.2

+0.3

-0.2

+0.3

-0.2

Standard

Allowance

dimension

(mm)

1.7 ±0.2 4.1 6 16 4.3

2.3 ±0.2 6 6 17.5 4.3

3.4 ±0.2 6 5 20 4.3

(mm)

Min. Min. Max.

Standard

dimension

(mm)

Allowance

(mm)

+0.2

0

+0.2

0

+0.2

0

Min.

0.7

0.8

0.9

29

AWiring work

Specificationofelectronicwire

Powersupply MCCB ELBorELCB Powercable Earthcable Communicationcable

Max : 242V
Min : 198V

X A

X A, 30mmA

0.1 sec

2.5mm

2

2.5mm

2

0.75~1.5mm

2

 Decide the capacity of ELCB(or MCCB+ELB) by below formula.

The capacity of ELCB(or MCCB+ELB) X [A] = 1.25 X 1.1 X ∑ Ai

 X

: The capacity of ELCB(or MCCB+ELB).

 ∑Ai : Sum of Rating currents of each indoor unit.


Refer to each installation manual about the rating current of indoor unit.

 Decide the power cable specification and maximum length within

10% power drop among indoor units.

n

Coef×35.6×Lk×ik

∑ (



coef: 1.55



Lk: Distance among each indoor unit[m], Ak: Power cable specification[mm2]

k=1

1000×A

k

10% of input voltage[V]

) <

ik: Running current of each unit[A]

Example of Installation

- Total power cable length L = 100(m), Running current of each units 1[A]

- Total 10 indoor units were installed

or

ELCB

MCCB+

ELB

10[A]

9[A] 1[A]

Indoor unit2Indoor unit1

20[m]10[m]0[m]

 Apply following equation.

k=1

n

∑ (

Coef×35.6×L

1000×A

k

k×ik

10% of input

) <

voltage[V]

 Calculation

 Installing with 1 sort wire.

2

2.5[mm

220[V]

] 2.5[mm2]

-2.2[V] -2.0[V]

-(2.2+2.0+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-11.2[V]

············ 2.5[mm

 Installing with 2 different sort wire.

············ 2.5[mm

220[V]

4.0[mm2] 4.0[mm2]

-1.4[V] -1.2[V]

-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-10.5[V]

30

 Rating current

Model Ratingcurrent

ND140HH 3.65A

2

] ············

208.8[V](Within 198V~242V)

2

] ············

209.5[V](Within 198V~242V)
it's okay

Indoor unit10

100[m]

it's okay

Duct_AVXDS@@_IB_E 32725-2.10.10.06.indd 30 2011-1-22 14:40:26

 Select the power cable in accordance with relevant local and national regulations.
 Wire size must comply with local and national code.

 For the power cable, use the grade of H07RN-F or H05RN-F materials.
 You should connect the power cable into the power cable terminal and fasten it with a clamp.
 The unbalanced power must be maintained within 10% of supply rating among whole indoor

units.

 If the power is unbalanced greatly, it may shorten the life of the condenser. If the unbalanced

power is exceeded over 10% of supply rating, the indoor unit is protected, stopped and the
error mode indicates.

 To protect the product from water and possible shock, you should keep the power cable and

the connection cord of the indoor and outdoor units in the iron pipe.

 Connect the power cable to the auxiliary circuit breaker.

An all pole disconnection from the power supply must be incorporated in the fixed
wiring(≥3mm).

 You must keep the cable in a protection tube.
 Keep distances of 50mm or more between power cable and communication cable.

 Maximum length of power cables are decided within 10% of power drop. If it exceeds, you

must consider another power supplying method.

 The circuit breaker(ELCB or MCCB+ELB) should be considered more capacity if many indoor

units are connected from one breaker.

 Use round pressure terminal for connections to the power terminal block.
 For wiring, use the designated power cable and connect it firmly, then secure to prevent out-

side pressure being exerted on the terminal board.

 Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small

head will strip the head and make proper tightening impossible.

 Over-tightening the terminal screws may break them.
 See the table below for tightening torque for the terminal screws.

Tighteningtorque(kgf•cm)

M 4 12.0~14.7

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Assigning address to indoor unit

SW01 SW02 SW03 SW04

SW05 SW06 SW07

Before installing the indoor unit, assign an address to the indoor unit according to the air conditioning

1

system plan.

The address of the indoor unit is assigned by adjusting MAIN(SW01, SW02) and RMC(SW03, SW04) rotary

2

switches.

 The designs and shape are subject to

change according to the model.

Setting Main Address



The MAIN address is for communication between the indoor unit and the outdoor unit.
Therefore, you must set it to operate the air conditioner properly.



You can set the MAIN address from ‘00’ to ‘99’ by mixing SW01 and SW02.
The MAIN address from ‘00’ to ‘99’ should differ from each other.



Check the indoor unit address on the plan that you are to install and set the address according to the
plan.

Note

You may not need to set main address if you selected Auto Address Setting from the
outdoor unit: see details on the outdoor unit installation manual.

WhenMAINaddressissetas"12".For Example

Setting RMC Address



The SW03, SW04 RMC switch is the address setting switch for controlling the indoor unit with the
centralized controller.



You must set the SW03,SW04 and K2 switch when using the centralized controller.

WhenRMCaddressissetas"12".For Example

SW03 SW04

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Additional functions

No. Function ON OFF

K1 External room sensor Not use Use

SW05

 K1 OFF

Heating mode : Setting temperature compensation value = 0°C
Thermo OFF  Fan OFF

SW06

K2 Centralized controller Not use Use

K3 - - -

K4 Drain Pump Not use Use

No. Function ON OFF

Heating Current Temperature

K5

K6 Filter Time 1,000 hours 2,000 hours

K7 Hot Water Heater Not use Use

K8 - - -

No. Function ON OFF

K9

Compensation

Indoor Expansion Valve For

Heating Stop

+2°C +5°C

Fix 80 step 0 or 80 step

K1 K2 K3 K4

SW05

K5 K6 K7 K8

SW06

K9 K10 K11 K12

SW07

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K10 Wired Remocon Group Master Not use Use

K11 External Control Not use Use

K12 External Control Output Thermal ON Operation ON

SW07

33

Final check and trial operation

To complete the installation, perform the following checks and tests
to ensure that the air conditioner operates correctly.

Check the following:

 Strength of the installation site
 Tightness of pipe connection to detect gas leak
 Electric wiring connection
 Heat-resistant insulation of the pipe
 Drainage
 Grounding conductor connection
 Correct operation (follow the steps below)

Providing information for user

After finishing the installation of the air conditioner, you should explain the following to the user.
Refer to appropriate pages in the user & installation manual.

How to start and stop the air conditioner

1

How to select the modes and functions

2

How to adjust the temperature and fan speed

3

How to adjust the airflow direction

4

How to set the timers

5

How to clean and replace the filters

6

Note When you complete the installation successfully, hand over the user & installation

manual to the user for storage in a handy and safe place.

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Troubleshooting

Detectionoferrors

 If an error occurs during the operation, an LED flickers and the operation is stopped except the LED.
 If you re-operate the air conditioner, it operates normally at first, then detect an error again.

LEDDisplayontheindoorunit

LEDDisplay

Indicators

ConcealedType

Abnormalconditions

Power reset

Error of temperature sensor in indoor unit
(OPEN/SHORT)

Error of heat exchanger sensor in indoor unit
Error of heat exchanger OUT sensor in indoor unit
Error of outlet temperature sensor in indoor unit
(OPEN/SHORT): For heat pump models only

Error of outdoor temperature sensor
Error of COND sensor
Error of DISCHARGE sensor

1. No communication for 2 minutes between
indoor unit and outdoor unit (communication
error for more than 2 minutes)

2. Indoor unit receiving the communication error
from outdoor unit

3. Outdoor unit tracking 3 minute error

4. When sending the communication error from
outdoor unit the mismatching of the
communication numbers and installed
numbers after completion of tracking.
(communication error for more than 2 minutes)

On Flickering





If you turn off the air conditioner when the LED is flickering, the LED is also turned off.



If you re-operate the air conditioner, it operates normally at first, then detect an error again.

Off

Green Red

StandardType

Operating

Displayed on
appropriate indoor unit
which is operating

Displayed on
appropriate indoor unit
which is operating

Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit

1. Error of indoor unit:
Displayed on the
indoor unit regardless
of operation

2. Error of outdoor unit:
Displayed on the
indoor unit which is
operating

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Troubleshooting

LEDDisplay

ConcealedType

Indicators

Abnormalconditions

Self-diagnostic error
(including the indoor unit not detected)

1. Error of electronic expansion valve close

2. Error of electronic expansion valve open

3. Breakaway of EVA OUT sensor

4. Breakaway of EVA IN sensor

5. Breakaway of COND MID sensor

6. 2nd detection of refrigerant completely leak

7. 2nd detection of high temperature COND

8. 2nd detection of high temperature DISCHARGE

9. COMP DOWN due to 2nd detection of low
pressure switch

10. Error of reverse phase

11. Compressor down due to 6th detection of
freezing

12. Self-diagnosis of condensation sensor (G8, G9)

13. Compressor down due to condensation ratio
control

Error of float switch

Error of setting option switches for optional
accessories

EEPROM error

EEPROM option error

Green

StandardType

Red

Operating

Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit

Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit

On Flickering





If you turn off the air conditioner when the LED is flickering, the LED is also turned off.



If you re-operate the air conditioner, it operates normally at first, then detect an error again.

Off

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Option table

E.S.P(ExternalStaticPressure)settingforphasecontrolmotor

With its phase control motor,you can adjust the indoor unit fan speed depending on the installation
condition.If the external static pressure is high so that the duct becomes longer or if the external static
pressure is low so that the duct becomes shorter,adjust the fan speed by referring the following table.

Static Pressure(mmAq) 5 10 15 20

Model Step Option code for indoor unit

HI

ND140HHXEA

LOW

Note  represents E.S.P(External Static Pressure)range of factory setting.

You don’t have to adjust the fan speed separately if the external static pressure of

the installation place is in . When it is out of , input the appropriate
option code.

 If you input the inappropriate option code,error may occur or the air conditioner is

out of order.
The option code must be inputted correctly by the installation specialist or service
agent.

012A24-130296 012A24-1302E6 015A24-1302F9 015A24-1303F0MID

37

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QUESTIONS OR COMMENTS?

COUNTRY CALL OR VISIT US ONLINE AT

AUSTRALIA

Duct_AVXDS@@_IB_E 32725-2.10.10.06.indd 38 2011-1-22 14:40:29

1300 362 603 www.samsung.com

Duct Type Series

HSP duct :NDHH

Air Conditioner

user & installation manual

imagine the possibilities

Thank you for purchasing this Samsung product.
To receive more complete service, please
register your product at

www.samsung.com/register

DB98-32725A-3

E

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