Samsung Air conditioner

Safety Information on Installation

⚠️ 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.

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

⚠️ WARNING

• 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.

General information

⚠️ 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 manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection of electric and 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 controller (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 centres or returned to the retailer so that it can be disposed of correctly and safely.
• Wear protective equipment (such as safety gloves, goggles, and headgear) during installation and maintenance works. Installation/repair technicians may be injured if protective equipment is not properly equipped.
• Do not use means to accelerate the defrost operation or to clean, other than those recommended by Samsung.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.

Preparation

Step 1.1 Choosing the installation location

Installation location requirements

• 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.
• Before installing the indoor unit, be sure to check whether the chosen location is well-drained.

⚠️ WARNING

If appliances contain R-32 refrigerant, then the floor area of the room in which the appliances are installed, operated and stored must be larger than the minimum floor area defined in table below A (m²).

m: Total refrigerant charge in the system

A: Minimum required room area

IMPORTANT: It is mandatory to consider either the table or taking into consideration the local law regarding the minimum living space of the premises.

Minimum installation height of indoor unit is 0.6 m for floor mounted, 1.8 m for wall, 2.2 m for ceiling.

⚠️ CAUTION

Do not install the air conditioner in the following places.

• The 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.
• The place where animals may urinate on the product. Ammonia may be generated.
• The place where is close to heat sources.

Overview of installation location requirements

Diagram illustrating recommended clearances around the indoor unit for air inlet/outlet, and drain hose hole. It shows minimum distances of 125 mm (recommended) for side clearances and 100 mm (recommended) for front clearance. The drain hose can be directed left or right. Maximum pipe height is 8 m, and maximum pipe length is 15 m. A note advises making at least one round to reduce noise and vibration.

Step 1.2 Checking and preparing accessories and tools

Accessories in the indoor unit package

For AC***RNADKG:

The actual units may look different from the images depicted here.

(Unit: m)

Indoor Unit

Outer wall

Indoor Unit

Diagram showing the indoor unit and outer wall with drain hose and assembly pipe. It illustrates how to make a U-trap (A) on the pipe connected to the indoor unit at the outer wall and cut the bottom part of the insulation (about 10 mm) to prevent rainwater from getting inside through the insulation.

⚠️ CAUTION

• Comply with the length and height limits described in the figure above.
• For the product that uses the R-32 refrigerant, Install the indoor unit on the wall 1.8 m or higher from the floor.

Step 1.3 Drilling a hole through the wall

Before fixing the installation plate to a wall and then fixing the indoor unit to the installation plate, a window frame, or a gypsum board, you must determine the position of a hole (with 65 mm inner diameter) through which the pipe bundle (consisting of power and communication cables, refrigerant pipes, and drain hose) will pass and then drill that hole.

1. Determine the position of a 65 mm hole in consideration of the possible directions of the pipe bundle and the minimum distances between the hole and the installation plate.

Diagram showing possible directions of the pipe bundle relative to the indoor unit and wall. Arrows indicate directions like 'Left', 'Right', 'Bottom right', 'Rear right or left'.

(Unit: mm)

Pipe bundle hole: Ø 65 mm

⚠️ CAUTION

If changing the pipe direction from left to right, do not drastically bend it but slowly turn it in the opposite direction as shown. Otherwise, the pipe may be damaged in the process.

Diagram showing a pipe bundle hole and minimum distances (A, B, C, D) from the hole to the installation plate.

Step 1.4 Performing leak test

Leak test

LEAK TEST WITH NITROGEN (before opening valves)

In order to detect basic refrigerant leaks, before recreating the vacuum and recirculating the R-32, it's responsible of the installer to pressurize the whole system with nitrogen (using a pressure regulator) at a pressure above 4.1MPa (gauge).

LEAK TEST WITH R-32 (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 R-32.

Diagram showing the indoor unit, wall, and drain hose. It illustrates that the hole should slant downwards so the drain hose also slants downwards to drain water well.

Diagram showing test parts for the indoor unit.

Step 1.5 Wrapping the pipes with the insulation

After checking for gas leaks in the system, insulate the pipe, hose and cables. Then place the indoor unit on the installation plate.

1. To avoid condensation problems, place heat-resistant poly-ethylene foam separately around each refrigerant pipe in the lower part of the indoor unit.
2. Wrap the refrigerant pipe and the drain hose in the rear of the indoor unit with the absorbent pad.

NOTE

Wind the pipe and hose three times to the end of the indoor unit with the absorbent pad. (20mm interval)

3. Wind the pipe, assembly cable and drain hose with insulation tape.
4. Place the bundle (the pipe, assembly cable and drain hose) in the lower part of the indoor unit carefully so it doesn't project from the rear of the indoor unit.
5. Hook the indoor unit to the installation plate and move the unit to the right and left until it is securely in place.
6. Wrap the rest of the pipe with vinyl tape.
7. Attach the pipe to the wall using clamps (optional).

Diagram showing the process of wrapping pipes with insulation tape and absorbent pad.

Indoor Unit Installation

Step 2.1 Disassembling the cover panel (Only for AC***RNADKG)

1. Remove the cap screws, then the screws.

Diagram showing how to remove cap screws and regular screws using Phillips and flat-head screwdrivers.

2. Unlock the side hooks (1, 2), then centre hooks (3). Then unlock the bottom hooks (4) to pull out the cover panel.

Diagram illustrating the location of side, centre, and bottom hooks on the indoor unit cover panel.

Step 2.2 Disassembling the installation plate

Diagram showing how to detach the installation plate from the wall.

Step 2.3 Connecting the power and communication cables (assembly cable)

Diagram showing the 'Before connecting' and 'After connecting' states of wires to a control box. It illustrates correct, upside down, damaged, and non-circular connections for circular terminals.

Diagram showing the terminal block with numbered terminals (1(L), 2(N6F1 F2) and screw locations for wire holders.

• When performing electrical and earthing works, be sure to comply with the 'technical standards of electrical installations' and the 'wiring regulations' in the local regulations.
• Tighten the terminal block screw to 1.2-1.8 N•m (12-18 kgf.cm).

NOTE

• Each wire is labelled with the corresponding terminal number.
• Use shield cable (Category 5; less than 50pF/m) for noisy environmental site.
• Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord. (Code designation IEC: 60245 IEC 66/CENELEC: H07RN-F, IEC: 60245 IEC 57/CENELEC: H05RN-F)

⚠️ CAUTION

• For the terminal block wiring, use a wire with a ring terminal socket only. Regular wires without a ring terminal socket may become a hazard due to overheating of the electrical contact during installation.
• Do not connect two or more different cables to extend the length. This connection may cause fire.
• Each circular terminal must match the size of its corresponding screw in the terminal block.
• After connecting the cables, make sure that terminal numbers on the indoor and outdoor units match.
• Ensure that power and communication cables are separated; they must not be in the same cable.
• For the product that uses the R-32 refrigerant, be cautious not to generate a spark by keeping the following requirements:
  • Do not remove the fuses with power on.
  • Do not disconnect the power plug from the wall outlet with power on.
  • It is recommended to locate the outlet in a high position. Place the cords so that they are not tangled.

⚠️ WARNING

Connect the wires firmly so that wires cannot be pulled out easily. (If they are loose, it could cause burn-out of the wires.)

Step 2.4 Optional: Extending the power cable

1. Prepare the following tools.

2. As shown in the figure, peel off the shields from the rubber and wire of the power cable.
3. Peel off 20 mm of cable shields from the pre-installed tube.

Diagram showing the power cable preparation, including peeling off shields and preparing the pre-installed tube.

⚠️ CAUTION

• For information about the power cable specifications for indoor and outdoor units, refer to the installation manual.
• After peeling off cable wires from the pre-installed tube, insert a contraction tube.
• If cable wires are connected without using connecting sleeves, their contact area becomes reduced, or corrosion develops on the outer surfaces of the wires (copper wires) over a long time. This may cause an increase of resistance (reduction of passing current) and consequently may result in a fire.

Diagram showing two methods for preparing the wire core and inserting it into the connection sleeve.

4. Using a crimping tool, compress the two points and flip it over and compress another two points in the same location.
5. The compression dimension should be 8.0.

Diagram showing the compression process and the required dimension.

5. After compressing it, pull both sides of the wire to make sure it is firmly pressed.

Diagram showing two methods for compressing the wire and the required 5 mm compression distance.

6. Apply heat to the contraction tube to contract it.

Diagram showing two methods for applying heat to the contraction tube.

7. Wrap it with the insulation tape twice or more and position your contraction tube in the middle of the insulation tape.
8. Three or more layers of insulation are required.

Diagram showing two methods for wrapping the contracted tube with insulation tape, indicating 40 mm and 35 mm lengths.

Step 2.5 Installing and connecting the drain hose

1. Install the drain hose.

Diagram showing the indoor unit, wall, drain hose, assembly pipe, and connection hose. It illustrates the correct orientation for the drain hose: slant downwards, not bent, with sufficient clearance, and not dipped in water.

Diagram showing how to pour water into the drain pan to check for proper drainage.

⚠️ CAUTION

• Make sure that the indoor unit is in an upright position when you pour water to check for leakage. Make sure that the water does not overflow onto the electrical part.
• If the diameter of the connection hose is smaller than the product's drain hose, water leakage may occur.
• Inadequate installation may cause water leakage.
• If the drain hose is routed inside the room, insulate the hose so that dripping condensation does not damage the furniture or floors.
• Do not box in or cover the drain hose connection. Drain hose connection must be easily accessible and serviceable.

Step 2.6 Optional: Extending the drain hose

Diagram showing how to connect an extension drain hose (B) to the existing drain hose (A) using vinyl tape and foam insulation. It indicates a connection length of 40-45 mm and foam insulation of 20 mm or more.

Step 2.7 Optional: Changing the direction of the drain hose

For AC***RNADKG

Diagram showing how to remove a rubber cap and pour water to check the direction of the drained water. It illustrates front and side views of the drain outlet.

For AC***RNTDKG

Change the direction only when it is necessary.

1. Detach the rubber cap with the flyer.

Diagram showing how to detach a rubber cap from the drain hose outlet using a screw and screw hole.

Step 2.8 Installing and connecting the assembly pipes to the refrigerant pipes (assembly pipe)

Connect indoor and outdoor units with field-supplied copper pipes by means of flare connections. Use insulated seamless refrigeration grade pipe only, (Cu DHP type according to ISO1337), degreased and deoxidized, suitable for operating pressures of at least 4200 kPa and for burst pressure of at least 20700 kPa. Under no circumstances must sanitary type copper pipe be used.

There are 2 refrigerant pipes of different diameters:

• The smaller one is for the liquid refrigerant
• The larger one is for the gas refrigerant

A short liquid refrigerant pipe and a short gas refrigerant pipe are already fitted to the air conditioner. The connection procedure for the refrigerant pipes varies according to the exit position of each pipe when facing the wall:

Diagram showing the indoor unit from the front view, indicating knock-out pieces for pipe exit on the left (A), rear, and right (B), and underside (C). It also shows a side view with a screw and guide for attaching the pipe.

1. Cut out the appropriate knock-out piece (A, B, C) on the rear of the indoor unit unless you connect the pipe directly from the rear.
2. Smooth the cut edges.
3. Remove the protection caps of the pipes and connect the assembly pipe to each pipe. Tighten the nuts first with your hands, and then with a torque wrench, applying the following torque:

⚠️ CAUTION

• Tighten the flare nut with a torque wrench according to specified method. If the flare nut is over-tightened, the flare may break and cause refrigerant gas leakage.
• Do not box in or cover the pipe connection. All refrigerant pipe connection must be easily accessible and serviceable.

Step 2.9 Optional: Installing DPM

Diagram showing a pipe being cut with a pipe cutter, and examples of pipe ends: 90°, Oblique, Rough, Burr.

NOTE

• If you want to shorten or extend the pipes, see Step 2.10 Shortening or extending the refrigerant pipes (assembly pipe) on page 15.
• Tighten the nuts to the specified torques. If overtightened, the nuts could be broken so refrigerant may leak.
• Cut off the remaining foam insulation.
• If necessary, bend the pipe to fit along the bottom of the indoor unit. Then pull it out through the appropriate hole.
• The pipe should not project from the rear of the indoor unit.
• The bending radius should be 100 mm or more.
• Pass the pipe through the hole in the wall.
• Fix the indoor unit on the wall. Pass the cables, pipes and hose through the knock-out hole which would be connected to the outdoor unit.
• Use 2 screws to fix the indoor unit as shown in the picture 2.
• Assemble the Guide into the position of A or B as shown in the picture 3.

NOTE

The pipe will be insulated and fixed permanently into position after finishing the installation and the gas leak test.

⚠️ CAUTION

• Tighten the flare nut with a torque wrench according to specified method. If the flare nut is over-tightened, the flare may break and cause refrigerant gas leakage.
• Do not box in or cover the pipe connection. All refrigerant pipe connection must be easily accessible and serviceable.

NOTE

• To find DPM allowable indoor unit models according to outdoor unit models, refer to outdoor installation manual.
• When installing DPM, you should set "DPM setting" to the outdoor unit.
• You do not need to set the address manually for the indoor unit.
• If DPM model is not set, communication error may occur.
• While the outdoor unit is tracking the indoor unit for one minute after the power supply is turned on, the operation may stop if the remote control reception signal of the installed indoor unit is different.
• To enable Level control with the centralized controller, refer to page 28.

⚠️ CAUTION

When installing DPM, only one external controller can be connected.

Step 2.10 Shortening or extending the refrigerant pipes (assembly pipe)

Diagram showing a pipe being cut with a pipe cutter, and examples of pipe ends: 90°, Oblique, Rough, Burr.

Step 2.11 Fixing the installation plate

You can install the indoor unit on a wall, window frame, or gypsum board.

⚠️ WARNING

• Make sure that the wall, window frame, or gypsum board can withstand the weight of the indoor unit. If you install the indoor unit in a place where it is not strong enough to withstand the unit's weight, the unit could fall and cause injury.

When fixing the indoor unit on a wall

Fix the installation plate to the wall giving attention to the weight of the indoor unit.

Diagram showing a wall with a plastic anchor and installation plate, indicating dimensions and screw locations. It also shows the pipe bundle hole.

Pipe bundle hole: Ø65 mm

NOTE

If you mount the plate to a concrete wall using plastic anchors, make sure that gaps between the wall and the plate, created by projected anchor, is less than 20 mm.

When fixing the indoor unit on a window frame

1. Determine the positions of the wooden uprights to be attached to the window frame.
2. Attach the wooden uprights to the window frame giving attention to the weight of the indoor unit.
3. Attach the installation plate to the wooden upright using tapping screws.

When fixing the indoor unit on a gypsum board

1. Use stud finder to find out locations of the studs.
2. Fix the plate hanger on two studs.

Diagram showing a wall with a plastic anchor and installation plate, indicating dimensions and screw locations. It also shows the pipe bundle hole.

Pipe bundle hole: Ø 65 mm

⚠️ CAUTION

• If you fix the indoor unit on a gypsum board, use only specified anchor bolts on reference positions. Otherwise, the gypsum surrounding the joints may crumble over time and cause the screws to be loosened and stripped. This may lead to physical injury or equipment damage.
• Search for other spots if there are less than two studs, or the distance between the studs are different from the plate hanger.
• Fix the installation plate without inclining to one side.

Step 2.12 Fixing the indoor unit to the installation plate

Diagram showing the indoor unit being hooked onto the installation plate. It indicates the pipe bundle should not move during this process.

⚠️ CAUTION

Make sure that the pipe bundle does not move when you install the indoor unit onto the installation plate.

Step 2.13 Assembling the cover panel (Only for AC***RNADKG)

1. Lock the side hooks (D), then centre hooks (B). Then lock the bottom hooks (C) to engage the cover panel in place.
2. Fasten the screw (A-1), then assemble the cap screws (A-2).

Diagrams illustrating the process of locking hooks and fastening screws to reassemble the indoor unit cover panel.

Setting an indoor unit address and installation option

• Set the indoor unit address and installation option with remote controller option. Set each option separately since you cannot set the ADDRESS setting and indoor unit installation setting option at the same time. You need to set twice when setting indoor unit address and installation option.
• Please use the proper wireless remote controller which can set 24 digit option code.
• Please refer to the wired remote controller installation manual for setting with the wired remote controller.

Common steps for setting the addresses and options

1. Enter the mode for setting the options:
   • a Remove the batteries from the remote control, and then insert them again.
   • b While holding down the [High Temp Button] and [Low Temp Button] simultaneously, insert the batteries into the remote control.
   • c Make sure that you are entered to the mode for setting the options:

Diagram showing the remote control buttons: [Mode Change], [High Temp Button], [Low Temp Button], [High Fan Button], [Low Fan Button], [SET Button], [Directional Buttons].

Diagram showing the remote control display entering the option setting mode, showing "00" and "Auto".

2. Set the option values.

⚠️ CAUTION

• The total number of available options are 24: SEG1 to SEG24.
• Because SEG1, SEG7, SEG13, and SEG19 are the page options used by the previous remote control models, the modes to set values for these options are skipped automatically.
• Set a 2-digit value for each option pair in the following order: SEG2 and SEG3 → SEG4 and SEG5 → SEG6 and SEG8 → SEG9 and SEG10 → SEG11 and SEG12 → SEG14 and SEG15 → SEG16 and SEG17 → SEG18 and SEG20 → SEG21 and SEG22 → SEG23 and SEG24

Diagram showing the remote display for "On (SEG1 to SEG12)" showing "00" and "Auto".

Diagram showing the remote display for "Off (SEG13 to SEG24)" showing "00" and "Auto".

NOTE

The remote control display and buttons may vary depending on the model.

Take the steps presented in the following table:

3 Check whether the option values that you have set are correct by pressing the [Mode Button] repeatedly.

Diagram showing the display for various SEG pairs: [SEG2, SEG3] (Auto), [SEG4, SEG5] (Cool), [SEG6, SEG8] (Dry), [SEG9, SEG10] (Fan), [SEG11, SEG12] (Heat), [SEG14, SEG15] (Auto), [SEG16, SEG17] (Cool), [SEG18, SEG20] (Dry), [SEG21, SEG22] (Fan), [SEG23, SEG24] (Heat).

4 Save the option values into the indoor unit:

Press the [SET Button] ↩️ twice.

5 Check whether the air conditioner operates in accordance with the option values you have set:

• a Reset the indoor unit by pressing the [Reset Button] on the indoor or outdoor unit.
• b Remove the batteries from the remote control, insert them again, and then press the [SET Button] ↩️ on the remote control.

Emergency Temperature Output (ETO) function

⚠️ CAUTION

In order to deploy the ETO function, the MIM-B14, an external contact interface module, must be installed in each indoor unit.

The ETO is a concept of emergency operation of indoor units. If the indoor unit 1 (main indoor unit) stops because of an error, the indoor unit 2 (sub indoor unit) starts to operate.

Basically, the indoor unit 2 operates in the previous mode. [For the first time operation, it starts in 24 °C (75 °F) Auto mode.]

To set more detailed operation conditions for the indoor unit 2, use the S-net Pro.

Setting up the ETO

Diagram illustrating communication between indoor and outdoor units, main indoor unit, sub indoor unit, and an external contact interface module (MIM-B14). It shows error output ports (1, 2) and contact input ports (5, 6).

1. Main indoor unit
   • Disable the external contact control (Default).
   • Connect the S-net pro2 to F1 and F2.
   • Enable the ETO function and set the temperature and time.
2. Sub indoor unit
   • (Required) Enable the external contact control (with the installation option SEG14 - Reverse Control).
   • Connect the S-net pro2 to F1 and F2.
   • Enable the entrance control and set the mode, set temperature, and fan speed.

ETO operation specifications

1 Main indoor unit

• Based on the external contact control settings, the main indoor unit decides whether to generate output when an error (indoor unit stop) occurs.
• Based on the ETO settings, the main indoor unit decides whether to generate output according to the temperature and time conditions.

2 Sub indoor unit

• Based on the entrance control settings, the sub indoor unit decides the mode, set temperature, and fan speed when contact inputs are given.

Setting the indoor unit addresses

1 Make sure that the power is supplied to the indoor unit. If the indoor unit is not plugged in, it must include a power supply.

2 The panel(display) should be connected to an indoor unit to receive option.

3 Before installing the indoor unit, assign an address to the indoor unit according to the air conditioning system plan.

4 Assign an indoor unit address by wireless remote controller.

The initial indoor unit ADDRESS is set as "MAIN : 0, RMC: 0".

• Set Main and RMC Address only the setting is required.
• There is no need to assign the indoor unit Main Address if the outdoor unit is addressing automatically.
• The indoor unit Main address will follow the outdoor unit's automatically.
• Assign 12 digit when setting the indoor unit address.
• No need to assign SEG4, 5, 8, 10 which are non applicable. Even though those segments are set, they will be ignored.
• If you set the applicable segments with numbers other than the indicated, the initial setting will be maintained.

Option No.: 0AXXXX-1XXXXX-2XXXXX-3XXXXX

*SEG6: AJN** models should check maximum installation indoor unit number of outdoor unit. (Indoor1: 0, Indoor2: 1, ~)

⚠️ CAUTION

• When "A"~"F" is entered to SEG5~6, the indoor unit MAIN ADDRESS is not changed.
• If you set the SEG 3 as 0, the indoor unit will maintain the previous MAIN ADDRESS even if you input the option value of SEG6.
• If you set the SEG 9 as 0, the indoor unit will maintain previous RMC ADDRESS even if you input the option value of SEG11~12.

Example) If you want to set as "MAIN: 3, CHANNEL: 1, RMC: B",

assign option codes except SEG 1, 7 which are page options.

Diagrams showing remote display for Auto (On, 81), Cool (On, 00), Dry (On, 30), Fan (On, 10), Heat (On, 16).

Setting the installation options in a batch

1 Make sure that the power is supplied to the indoor unit. If the indoor unit is not plugged in, it must include a power supply.

2 The panel(display) should be connected to an indoor unit to receive option.

3 Set the installation option according to the installation condition of an air conditioner.

The default setting of an indoor unit installation option is "02000-100000-200000-300000".

• Individual control of a remote controller(SEG20) is the function that controls an indoor unit individually when there is more than one indoor unit.
• No need to assign SEG3, 6, 9, 10, 11, 16, 21, 22, 23, 24 which are non applicable. Even though those segments are set, they will be ignored.
• If you set the applicable segments with numbers other than the indicated, the initial setting will be maintained.

Option No.: 02XXXX-1XXXXX-2XXXXX-3XXXXX

If you input a number other than 0~4 on the individual control of the indoor unit(SEG 20), the indoor is set as "Indoor 1".

Example) If you want to set as "Exterior temperature sensor: USE, External control: USE

assign option codes except SEG 1, 7, 13, 19 which are page options.

*Level control: The centralized controller can limit the functions and inputs of connected products with this function enabled.

[Example: Operation mode limit (Cooling only/Heating only/No limitation), Heating temperature upper limit, Cooling temperature lower limit]

To enable 'Level control' when applying the DPM with the centralized controller, appoint the main (Set 'Use of external control [SEG14] option to 4 or higher).

Example: When installing DPM (1 Outdoor unit with 4 indoor units)

Changing the addresses and options individually

You can change each digit of set option.

NOTE

• When changing a digit of an indoor unit address setting option, set the SEG3 as 'A'.
• When changing a digit of indoor unit installation option, set the SEG3 as '2'.
• Example) When setting the 'buzzer control' into disuse status.

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 receiver & display unit

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.

When E108 error occurs, change the address and reset the system. Ex.) When address of the indoor unit #1 and #2 are set as 5, address of the indoor unit #1 will become 5 and indoor unit #2 will display E108, A002.

Diagram showing LED status: On, Flickering, Off.