SAMSUNG AD18A1E2 Service Manual

ROOM AIR CONDITIONER

INDOOR UNIT AD24A1(B1)E12 AD18A1(B1)E09 AD19A1(B1)E07 AD19A1(B1)E12

SERVICE

OUTDOOR UNIT UD24A1(B1)E2 UD18A1(B1)E2 UD19A1(B1)E2

Manual

CONTENTSAIR CONDITIONER

1. Pre c a u t i o n s

2. Product Specifications

3. Operating Instructions and

I n s t a l l a t i o n

4. Disassembly and Reassembly

5. Tro u b l e s h o o t i n g

6. Exploded Views and Parts List

7. PCB Diagrams

8. Wiring Diagrams

9. Schematic Diagrams

Printed in Korea. Code No. DB81-10179A(1)

1. Precautions

1 . Warning: Prior to re p a i r, disconnect the

power cord from the circuit bre a k e r.

2 . Use proper parts: Use only exact re p l a c e m e n t

parts. (Also, we recommend replacing parts rather than repairing them.)

3 . Use the proper tools: Use the proper tools

and test equipment, and know how to use them. Using defective tools or test equipment may cause problems later-intermittent contact, for example.

4 . Power Cord: Prior to re p a i r, check the power

c o rd and replace it if necessary.

5 . Avoid using an extension cord, and avoid tap-

ping into a power cord. This practice may result in malfunction or fire .

6 . After completing repairs and re a s s e m b l y,

check the insulation resistance. Pro c e d u re : Prior to applying power, measure the re s i stance between the power cord and the gro u n d terminal. The resistance must be greater than 30 megohms.

Fig. 1-1 Avoid Dangerous Contact

Fig. 1-2 No Tapping and No Extension Cords

7 . Make sure that the grounds are adequate.

8 . Make sure that the installation conditions are

s a t i s f a c t o r y. Relocate the unit if necessary.

9 . Keep children away from the unit while it is

being re p a i re d .

1 0 . Be sure to clean the unit and its surro u n d i n g

a re a .

Fig. 1-3 No Kids Nearby!

Fig. 1-4 Clean the Unit

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1-1

M E M O

1-2

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4. Disassembly and Reassembly

Stop operation of the airconditioner and remove the power plug from the wall outlet before repairing the unit

4-1 Indoor Unit

No Parts Procedure Remark

1 Front Grille 1) Stop the air conditioner operation and

block the main power.

2) Seperate the tape of front. Panel upper.

3) Contract the second finger to the left and right handle and pull to open the inlet grille.

4) Take the left and right filter out.

5) Loosen one of the right fixing screw and seperate the terminal cover.

6) Open the cover screw and loosen three fixing screws of front grille.

7) Pull the upper left and right of discharge softly for the outside cover to be pulled out.

8) Pull softly the lower part of discharge and push it up

Caution:

Assemble the front panel and fix the hooks of left and right.

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4-1

Disassembly and Reassembly

No Parts Procedure Remark

Filter Frame

Ass'y Tray Drain

1) Loosen the left and right screw of the Holder Filter, and Separate the Holder Filter.

1) Do " ", above.

1 2 Separate the holder at the rear side of Indoor unit.

2) Take the display PCB out. (Center of indoor unit).

3) Loosen three fixing screws of left and right.

4) Pull tray drain out from the back body.

4-2

Main PCB

1) Do " ", above

1 2

2) Take all the connector of PCB upper side out. (Inclusion Power cord)

3) Separate the outdoor unit connection wire from the terminal block.

4) If pulling the Main PCB up. it will be taken out. (Separate the TRANS hook. it before).

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Disassembly and Reassembly

No Parts Procedure Remark

Heat Exchanger

1) Do " 1 2 3 4 ", above.

2) Loosen the left screws of the heat exchanger.

Lifting the heat exchanger up a little to push the up side for separation from the indoor unit

Fan Motor and

1) Do " 1 2 3 4 5 ", above.

Cross Fan

2) Loosen the fixing two screws and separate the motor holder.

3) Loosen the fixing screw of motor fan. (By use of M3 wrench) Separate the motor from the fan. Separate the fan motor the left holder bearing.

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4-3

4-2 Outdoor Unit

No Parts Procedure Remark

Cabinet

Fan Motor &

Propeller Fan

1) Turn off the unit and remove the power cable

2) Remove the top cover.

3) Remove the control box cover.

4) Unplug the ass'y cable.

5) Remove the cabi-side.

6) Remove the cabi-front.

* When you assemble the parts, check if the

each parts and electric connectors are fixed firmly.

1) Do Procedure 1 above.

2) Remove the nut flange. (Turn to the right to remove as it is a left turned screw)

3) Disassemble the propeller fan.

<UD24A1(B1)E2>

<UD18A1(B1)E2/UD19A1(B1)E2>

<UD24A1(B1)E2>

4-4

<UD18A1(B1)E2/UD19A1(B1)E2>

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3. Operating Instructions and Installation

3-1 Operating Instructions

3-1-1 Name & Function of Key in remote controller

NAME OF KEY 1 2

MODE

4 5

TURBO

OFF

(UP)

(DOWN)

On/Off Button. Use this button to start and stop air conditioner. Temp. up button.

If the button is pressed once, the setting temperature is increased by 1°C Temp. down button.

If the button is pressed once, the setting temperature is decreased by 1°C Each time you press this button,

MODE is changed in the following order.

Use this button to provide heavy duty cooling & Heating for 30 minutes.

Set up the reserve or cancel the timer off quickly

Use this button for sleep operation. (The SLEEP mode can be selected at COOL and HEAT mode.)

Adjusts air flow vertically, each time you press this button.

FUNCTION OF KEY

: Auto Mode : Cool Mode : Dry Mode

: Fan Only : Heat Mode

10 11 12 13

Each time you press this button,

O V E R

E R

ON TIMER OFF TIMER

SET CANCEL

(UP)

(DOWN)

TIME

FAN SPEED is changed in the following order.

Set up the time that operation start. Set up the time that operation stop.

Use this button to reserve the timer on and timer off. Use this button to cancel the timer on and timer off.

If the button is pressed once, the time increase by one minute during the time set mode, and ten minutes during the timer set mode.

If the button is pressed once, the time decrease by one minute during the time set mode, and ten minutes during the timer set mode.

Without regard to ON/OFF condition in remote controller, use this button to set current time. Adjust the current time using button. (Data can be transmitted after setting up the time)

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3-1

Operating Instructions and Installation

3-1-1(a) Heat Pump

1. A U TO MODE : In this mode, operation mode(COOL, HEAT, DRY) is selected automatically by the room temperature of initial o p e r a t i o n .

Room Temp Tr≥ 21°C+∆T 21°C +∆T>Tr

∆T= -2°C, -1°C, 0°C, +1°C, +2°C ∆T is controlled by setting temperature

up/down key of remote contro l l e r

2. C O O L MODE : The unit operates accord i n g to the diff e rence between the setting and room temperature. (18°C~30°C)

3. H E AT MODE : The unit operates accord i n g to the diff e rence between the setting and room temperature.(16°C~30°C) * P revention against cold wind : For about 3~5 minutes after initial operation, thermo c o n t rol or “de-ice”, the indoor fan will either not operate or operate very slowly(510 rpm), then switch to the selected fan speed. This period is to allow the indoor unit's heat-exchanger to prewarm before emitting warm air. *High temperature release function : The outdoor unit for and compressor ON/OFF c o n t rol for safety operation, when the overheat is heat exchanger of indoor unit. *De-ice : Deicing operation is controlled by indoor unit's heat exchanger temperature and accumulating time of compre s s o r ' s o p e r a t i o n . De-ice end by sensing of the pro c e s s i n g time by de-ice condition.

Cool Operation (Set Temp:AUTO SETTING)

Heat Operation (Set Temp : 22°C+∆T)

Operation Type

4. D RY MODE : Has 3 states, each determined by room temperature . The unit operates in DRY m o d e . *Co m p ressor ON/OFF Time is contro l l e d compulsorily(can not set up the fan speed, always bre e z e ) . * P rotective function : Low temperature release. (Prevention against fre e z e )

5. TURBO MODE : This mode is available in A U TO, COOL, HEAT, DRY, FAN MODE. When this button is pressed at first, the air conditioner is operated “powerful” state for 30 minutes re g a rdless of the set temperat u re, room temperature . When this button is pressed again, or when the operating time is 30 minutes, turbo operation mode is canceled and returned to the previous mode. *But, if you press the TURBO button in DRY or FAN mode that is changed with A U TO mode automatically.

6 . S L E E P MODE : Sleep mode is available

only in COOL or HEAT mode. The operation will stop after 6 hours. *In COOL mode : The setting temperature is automatically raised by 1°C each 1hour When the temperature has been raised by total of 2°C, that temperature is maint a i n e d . *In HEAT mode : The setting temperature is automatically droped by 1°C each 1hour. When the temperature has been droped by total of 2°C, that temperature is maint a i n e d .

7. FAN SPEED : Manual (3 step), Auto (4 step) Fan speed automatically varies depending on both the diff e rence between setting and the room temperature .

3-2

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Operating Instructions and Installation

8 . C O M P U L S O RY O P E R ATION :

For operating the air conditioner without the remote contro l l e r. * A U TO : The operating is the same function that A U TO MODE in the remote cont ro l l e r.

9 . SWING : BLADE-H is rotated vertically by

the stepping motor. *Memory louver : When ON/OFF button is p ressed at stop state, the BLADE-H re t u r n s to its original location which is operating state before stop *Swing Set : Press the button under the remote control is displayed on LCD the , and the blades move up and down, about 43°. If the one more time press the button, blatles location is stop.

1 0 . Quick OFF TIMER: OFF timer (quick timer)

allows reservation or cancel the timer off quickly When OFF timer button is pressed at operating state, LCD displays the polling state s e q u e n t i a l l y. The LCD also displays the time re m a i n i n g .

11 . 24-Hour ON/OFF Real Setting Ti m e r. : The

air conditioner is turned ON at a specified time using .

ON TIMER

OFF TIMER : The air Conditioner is turned OFF at a specified time using .

OFF TIMER

*ON TIMER : Only timer LED lights on. *OFF TIMER : Both timer and operation LED lights on. *3 minutes delay timer.

1 2 . SELF Diagnosis

LED DISPLAY

o p e r-

T I M E R

a t i o n

FA N

Tu r b o

Check Point

I n t e r ruption of electric power and Power on. Abnormal condition of the room sensor.

Abnormal condition of the indoor unit's heat exchanger sensor.

Indoor unit fan motor lock.

: LED blinking

: LED off

1 3 . BUZZER SOUND : Whenever the ON/OFF

button is pressed or whenever change occurs to the condition which is set up or select, the compulsory operation mode, buzzer is sounded "beep"

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3-3

3-2 Installation

3-2-1 Selecting Area for Installation

Select an area for installation that is suitable to the customer's needs.

3-2-1(a) Indoor Unit

1 . Make sure that you install the indoor unit in

an area providing good ventilation. It must not be blocked by an obstacle affecting the airflow near the air inlet and the air outlet.

2 . Make sure that you install the indoor unit in

an area allowing good air handling and endurance of vibration of the indoor unit.

3. Make sure that you install the indoor unit in an area where there is no source of heat or vapor nearby.

4 . Make sure that you install the indoor unit in

an area from which hot or cool air is spre a d evenly in a ro o m .

5 . Make sure that you install the indoor unit in

an area away from TVs, audio units, cordless phones, fluorescent lighting fixture s and other electrical appliances (at least 1 m e t e r ) .

6 . Make sure that you install the indoor unit in

an area which provides easy pipe connection with the outdoor unit, and easy drainage for condensed water.

7. Make sure that you install the indoor unit in an area which is large enough to accomodate the measurements shown in figure on the next page.

3-2-1(b) Outdoor Unit

1 . Make sure that you install the outdoor unit

in area not exposed to the rain or direct sun l i g h t .

(Install a separate sunblind if exposed to

d i rect sun light.)

2 . Make sure that you install the outdoor unit

in area allowing good air moment, not amplifying noise or vibration, especially to

avoid disturbing neighbours.

(Fix the unit firmly if it is mounted in a

high place.)

3 . Make sure that you install the outdoor unit

in area providing good ventilation and which is not dusty. It must not be blocked by any obstacle affecting the airflow near the air inlet and the air outlet.

4 . Make sure that you install the outdoor unit

in area free from animals or plants.

5 . Make sure that you install the outdoor unit

in area not blocking the traff i c .

6. Make sure that you install the outdoor unit in area easy to drain condensed water fro m the indoor unit.

7. Make sure that you install the outdoor unit in area which provides easy connection within the maximum allowable length of a coolant pipe (10 meters).

N o t e

1. Add 10 grams of refrigerant (R-22) for

every 1 meter if the pipe length exceeds the standard pipe length of 5 meters.

2. Maintain a height between the indoor and

outdoor units of less than 3 meters.

8 . Make sure that you install the outdoor unit

in an area which is large enough to accommodate the measurements

shown in figure on the next page.

3-2-1(c) Remote Control Unit

1 . Make sure that you install the remote con-

t rol unit in an area free from obstacles such as curtains etc, which may block signals f rom the remote control unit.

2. Make sure that you install the remote cont rol unit in an area not exposed to d i rect sunlight, and where there is no sourc e of heat.

3. Make sure that you install the remote cont rol unit in an area away from TVs, audio units, cordless phones, fluorescent lighting f i x t u res and other electrical appliances (at least 1 meter).

Caution

It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines), salty areas such as coast areas, areas where sulfuric gas is present such as hot spring areas. Contact your dealer for advice.

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3-2-2 Installation diagram of indoor unit and outdoor unit

Operating Instructions and Installation

A Indoor unit gas leak test check point

Indoor unit

Piping

Tape vinyl

B Drain hose installation

Cut the piping hole sloped slightly

Piping may be laid to the rear, left, right or down .

Right

Rear

Down

Remote controlRemote control holder

Rear

Left

1 2

3 4

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Piping (Liquid) 1/4” Clamper tube Piping (Gas) 1/2”, 3/8” Installation plate Installation tube Pipe-connection Vinyl tape Screw Putty Drain hose

6 7

8 9

A-UNIT

B-UNIT

Outdoor unit check point

3-5

Operating Instructions and Installation

3-2-2(a) Fixing the Installation Plate

(Unit : mm)

Installation plate

280

340

Pipe hole (ø65mm)

1. Determine the position of the pipe and drain hose hole using the right figure and drill the hole with an inner diameter of 65mm so that it slants slightly downwards.

2. If you are fixing the indoor unit to a… Then follow Steps…

Wall 3.

Window frame 4 to 6.

3. Fix the installation plate to the wall in a manner appropriate to the weight of the indoor unit.

If you are mounting the plate on a concrete wall with anchor bolts, the anchor bolts must not project by more than 20mm.

4. Determine the positions of the wooden uprights to be attached to the window frame.

3-2-2(b) Purging the Unit

5. Attach the wooden uprights to the window frame in a manner appropriate to the weight of the indoor unit.

6. Using tapped screws, attach the installation plate to the wooden uprights, as illustrated in the last figure opposite.

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

Unscrew the caps at the end of each pipe.

Result : All inert gas escapes from the indoor unit.

• To prevent dirt or foreign objects from getting into

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

3-6

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3-2-2(c) Connecting the Assembly Cable.

The outdoor unit is powered from the indoor unit via the assembly cable. If the outdoor unit is more than five metres away from the indoor unit, the cable must first be extended to a maximum of ten metre s .

1 . Extend the assembly cable if necessary. 2 . Open the front grille by pulling on the tabs on the lower right and

left sides of the indoor unit.

3 . Remove the screw securing the connector cover.

Indoor unit

Outdoor unit

(L)2(N)

COM

Earth

4 . Pass the assembly cable through the rear of the indoor unit and

connect the assembly cable to terminals 1, 2, 3, 5.

• Each wire is labelled with the corresponding terminal number. 5 . Firmly fix the ass’y cable with clamp wire holder. 6 . Pass the other end of the cable through the 65mm hole in the wall. 7 . Replace the connector cover, carefully tightening the scre w. 8 . Close the front grille. 9 . For further details on how to plug the other end of the assembly

cable into the outdoor unit, refer to page 3-8.

Operating Instructions and Installation

3-2-2(d) Installing and Connecting the Indoor Unit Drain Hose

C a re must be taken when installing the drain hose for the indoor unit to ensure that any condensa tion water is correctly drained outside.l When passing the drain hose through the 65mm hole drilled in the wall, check that none of the following situations occur.

The hose must NOT slope upw ards.

To install the drain hose, proceed as follows.

1. If necessary, connect the 2-metre extension to the drain hose. 2 . If you are using the extension, insulate the inside part of the extension drain hose with a shield.

3. Pass the drain hose under the refrigerant piping, taking care to keep the drain hose tight.

4. Pass the drain hose through the hole in the wall, making sure that it is sloping downwards, as shown in the illustrations above.

The end of the drain hose must NOT be placed in water.

Do NOT bend the hose in different directions.

Keep a clearance of at least 5cm between the end of the hose and the ground.

Do NOT place the end of the drain hose in a hollow.

Shield

Drain hose Extension drain hose

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The hose will be fixed permanently into position once the whole installation has been tested for gas leaks; refer to page 16 for further details.

3-7

Operating Instructions and Installation

3-2-2(e) Outdoor unit installation

GAS LEAK TEST

Indoor unit check point

Check for gas leak from the flare nut connections with leak detector.

WIRING CONNECTION

Two electric cables must be connected to the outdoor unit:

• The assembly cable connecting the indoor unit to the outdoor unit.

• The power cable connecting the auxiliary circuit breaker to the outdoor unit.

1 Remove the terminal board cover on the side of the outdoor unit. 2 Connect the assembly cable to terminals 1 to 5 and connect the power cable to therminals A to B.

Each wire is labelled with the corresponding terminal number. E n s u re the wire number of the indoor unit and the terminal number of the outdoor unit.

3 Connect the earth wires to the earth terminals.

Outdoor unit check point

Outdoor unit

Refer to the page opposite for further details on how to check that earthing is corre c t .

4 Replace the terminal board cover, carefully tightening the screw. 5 Connect the power cable to the auxiliary circuit breaker.

(L)

COM

(L)

Earth terminal

Earth

(N)

COM

(L)2(N)

Terminal Block

Circuit Breaker (Main Power supply cable)

Assembly cable

Earth terminal

Earth

(N)

3-8

Indoor unit

A-unit

B-unit

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Installation of drain line

In heating and ”de-ice” operation, condensed water may be generated. Install drain line as following pro c e d u re .

1. Insert drain plug into hole and then connect drain hose to drain plug.

• Inside diameter of drain hose is 18mm

Grounding

Operating Instructions and Installation

Drain hole

Drain plug

(The parts for this work are optional)

• A g rounding terminal can be found on the outdoor unit as illustrated.

Grounding screw hole

1 . When an existing grounding terminal is avil-

a b l e . ( G rounding wire of ø1.6mm or larg e r < s o l i d

w i re>or 2mm2or larger <standard wire>)

Terminal used exclusively for grounding

Grounding resistance: less than 100 ohms (existing grounding electrode)

2 . Use of a grounding electro d e .

• Specifications of grounding electro d e .

Carbon plastic Steel core

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PVC-insulated wire(2mm2x3.5m), green Terminal, M4

3-9

Operating Instructions and Installation

3-2-2(f) Flare Modification

• Tools used

Flare modification procedure

1 ) Cut the pipe using a pipe cutter.

90°

3 ) Insert a flare nut into the pipe and modifty flare .

Oblique

Raughness

2 ) Remove burrs at the tip of the pipe cut.

Burr

* Unproper flaring

C a u t i o n : Burrs not removed may result in

leakage of gas.

Pipe

Reamer

Outer diameter A(mm)

ø6.35mm 1.3 ø9.52mm 1.8 ø12.7mm 2.0

3-10

Inclined Surface

damaged

Cracked Uneven

thickness

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