Samsung ASH180UE User manual

SERVICE Manual
CONTENTSAIR CONDITIONER
1. Precautions
2. Product Specifications
3. OperatingInstructions and
Installation
4. Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views andParts List
7. Block Diagrams
8. PCB Diagrams
9. Wiring Diagrams
10. SchematicDiagrams
ROOM AIR CONDITIONER
ASH180UE/ASH181UE
ASH-2417ER
ASH-1808DR

© Samsung Electronics Co., Ltd. APR. 1998.
Printed in Korea.
Code No. DB81-10154A

1) Remove power cable from power outlet.
Remove power cable from an outlet prior to disassembly for
repair.
When the power cable is removed wait for at least 1 minute
and measure the voltage between the + and - terminal of the
large capacity electrolyti capacitor using a tester. Make sure
that the voltage is less than DC 10V, then starts repairing.
2) Warning about electrical shock
If you cannot avoid checking the circuits with power not dis-
connected pay special attention not to touch live parts to
avoid electric shock.
3) Use proper parts
Use genuine parts of a model if parts need to be replaced. (It
is recommended that parts are replaced rather than repaired,
to avoid electrical contact. Customers should refrain from
repairing parts themselves as this can be extremely danger-
ous.)
4) Use proper tools
Use proper tools for repair and be familiarized with handling
test equipment.
Using worn out tools may result in problems such as intermit-
tent contact, etc
5) Lead wire or power cable damaged
Check if lead wire or power cord is damaged prior to repair,
and replace if damaged.
6) Avoid tapping a power cord
Tapping a power cable or using an extension cord from a
power outlet is dangerous and should be avoided. It may
result is malfunctioning or fire.
7) Checking insulation
Be sure to check insulation resistance when assembly is com-
pleted. (Check insulation resistance between the power cord
plug and ground terminal using an ohm meter and check if it
is greater than 30MΩprior to applying the power.)
8) Check grounding
Check grounding status and fix it if not sufficient.
9) Check installation condition
Check installation condition and fix insufficient conditions.
If it is still not satisfactory find another area for installation.
10) Child care
It is recommended to have children stay away the units when
the repair is being done to avoid accidents.
Samsung Electronics 1-1
1. Precautions
Clean the unit and the area arount it.
Let the customer know that the unit has been repaired.
dangerous
No
inter connection
Brilliantly
Cleaning

1-2 Samsung Electronics
MEMO

Model ASH180UE/181UE ASH-2417ER ASH-1808DR
Item Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit
Type - Wall-mounting Wall-mounting Wall-mounting
Cooling BTU/h 17,500 21,500 18,000
Dehumiditying 3.4 5.9 3.4
Heating BTU/h 19,000 22,000 18,000
Low temp. heating BTU/h - - -
Air volume Cooling m3/min. 13.8 13.1 12.5
Heating m3/min. 14.1 13.6 13.0
Noise Cooling dB 44 55 46 57 45 57
Heating dB 44 55 46 57 45 57
Energy Cooling BTU/h.W 9.7 8.4 9.0
efficiency ratio Heating BTU/h.W 9.5 8.8 9.5
Power ø-V-Hz 1-220/240-50 1-220/240-50 1-200/220-50
Power Cooling W 1,800 2,500 2,000
consumption Heating W 2,000 2,500 1,900
Operating current Cooling A 8.0 12.0 9.5
Heating A 9.0 12.0 9.0
Power factor Cooling % 93.8(at240V) 86.8(at240V) 95.7(at220V)
Heating % 92.6(at240V) 86.8(at240V) 96.0(at220V)
Starting current A 40 72 62
Power cable Length m 6.2 6.2 6.2
Number of core wire 3Gx2.5mm2/Area 3Gx2.5mm2/Area 3Gx2.5mm2/Area
Fuse capacity A 3.15 - 3.15 - 3.15 -
Outer Width x Height mm 1,050x298x180 787x620x320 1,050x298x180 787x620x320 1,050x298x180 787x620x320
dimension x Depth inch 41.34x11.73x7.09 30.98x24.4x12.6 41.34x11.73x7.09 30.98x24.4x12.6 41.34x11.73x7.09 30.98x24.4x12.6
Weight kg 13 46 13 59 13 59
Coolant pipe Liquid OD(mm) ø6.35x5 ø6.35x5 ø6.35x5
Coolant x L(m) ø12.7x5 ø15.88x5 ø12.7x5
Drain hose ID(mm)xL(mm) ø17x2000 ø17x2000 ø17x2000
Compressor Type - Rotary - Reciprocating - Reciprocating
Motor Type - - - P.S.C - P.S.C
Rated input W - - - 2,620 2,170
Blower Type Cross-fan Propeller Cross-fan Propeller Cross-fan Propeller
Motor Type Resin Steel Resin Steel Resin Steel
Rated input W 30 60 30 60 30 60
Heat exchanger 2Row 12Step 2Row 24Step 2Row 12Step 2Row 24Step 2Row 12Step 2Row 24Step
Coolant control unit - Capillary-tube - Capillary-tube - Capillary-tube
Freezer oil capacity cc - 410 - 1,180 - 1,180
Coolant to charge(R-22) g 1,300 1,750 1,670
Cooling test condition INDOOR UNIT : DB 27˚C WB 19˚C 27˚C ,19.5˚C
OUTDOOR UNIT : DB 35˚C WB 24˚C 35˚C,24˚C
Heating test condition INDOOR UNIT : DB 20˚C
OUTDOOR UNIT : DB 7˚C WB 6˚C
Maximum operation condition INDOOR UNIT : DB 32˚C,WB 23˚C 29˚C, 19˚C 32˚C, 22.5˚C
OUTDOOR UNIT : DB 43˚C,WB 26˚C 54˚C, 24˚C 43˚C, 25.5˚C
Samsung Electronics 2-1
2. Product Specifications
2-1 Table
Perfor-
mance
Power
Electri-
cal
Chara-
cteris-
tics
Pro-
duct

2-2 Samsung Electronics
2-2 Dimensions
2-2-1 Indoor Unit
2-2-2 Outdoor Unit
Air
in
(Front view) (Remote control)
(Rear view)
(Front view) (Rear view)
787
340
582
1050 180
250 260
outer edge of
indoor unit
200 145
Air
out Installation plate
63 21
unit : mm

Samsung Electronics 3-1
3. Operating Instructions and Installation
3-1 Operating Instructions
3-1-1 Name & Function of Key in remote controller
NAMED OF KEY
ON/OFF
MODE
TURBO
MILD
Q. TIMER
FAN SPEED
SET
SWING
AUTO
TIME
TIMER/CANCEL
ON
TIMER OFF
(UP)
TIME
(DOWN)
(UP)
TEMP (DOWN)
SLEEP
FUNCTION OF KEY
Use this button to start and stop air conditioner.
Each time you press this button,
MODE is changed in the following order.
"AUTO" "COOL" "DRY" "FAN" "HEAT"
Use this button to provide heavy duty cooling (heating)
for 30 minutes.
Use this button to provide pleasant cooling (heating)
for 3 hours.
Set up the reserve or cancel the timer on and timer off quickly.
Each time you press this button,
FAN SPEED is changed in the following order.
"AUTO" " (L)" " (ME)" " (HI)" NATURAL
Adjusts air flow vertically.
Each time you press this button,
BLADE-H rotates by 8° (Changable range 50°).
Each time you press this button,
BLADE-H rotates within 35° and stop.
Without regard to ON/OFF condition in remote controller,
use this button to set current time.
Adjust the current time using TIME button.
(Data can be transmitted after setting up the time)
Use this button to reserve or cancel the timer on and timer off.
Set up the time that operation start.
Set up the time that operation stop.
If the TIME 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 TIME button is pressed once, the time decrease by one
minute during the time set mode, and ten minutes during the
timer set mode.
If the button is pressed once,
the setting temperature is increased by 1°C.
If the button is pressed once,
the setting temperature is decreased by 1°C.
Use this button for sleep operation.
(The SLEEP mode can be selected at COOL and HEAT mode.)
ONE SHOT KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
ONE SHOT KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
ONE SHOT KEY
ONE SHOT KEY
ONE SHOT KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
OR
CONTINUOUS KEY
ONE SHOT KEY
NO
1
2
3
4
5
6
7
8
9
10
11
12
13

3-2 Samsung Electronics
Operating Instructions and Installation
1. AUTO MODE: In this mode, operation
mode (COOL, HEAT) is selected automati-
cally by the room temperature of initial
operation.
∆T= -1°, -2°C, 0°C, +1°C, +2°C
∆T is controlled by setting temperature
up/down key of remote controller
2. COOL MODE: The unit operates according
to the difference between the setting and
room temperature.
The setting temperature range is
18°Cthrough 30°C.
3. HEAT MODE: The unit operates according
to the difference between the setting and
room temperature.
The setting temperature range is 16°C
through 30°C.
*Prevention against cold wind : For about
3~5 minutes after initial operation, thermo
control or °∞de-ice°±, the indoor fan will
either not operate or operate very slowly
(650 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.
*Protective function : High temperature
release.
*De-ice: Deicing operation is controlled by
indoor unit's heat exchanger temperature
and room temperature and accumulating
time of compressor's operation.
4. DRY MODE: The unit is operated at com-
pressor on state regardless of room temper-
ature for an initial 30 minutes of dehumidi-
fication operation, and the indoor fan motor
is automatically operated due to the temper-
ature difference between the room tempera-
ture and set temperature.
The compressor is automatically controlled
due to the temperature difference between
room temperature and set temperature after
operation of 30 minutes.
*Set Temperature : 23°C
*Protective function: Low temperature
release. (Prevention against freeze)
5. TURBO MODE: This mode is available only
in AUTO, COOL, HEAT mode.
When this button is pressed at first, the air
conditioner is operated "powerful" state for
30 minutes regardless of the set tempera-
ture, 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.
6. MILD MODE: This mode is available only
in AUTO, COOL, HEAT mode.
When this button is pressed at first, the air
conditioner is operated in its current state
for 3 hours.
When this button is pressed again or when
the operating time is 3 hours, mild opera-
tion mode is canceled and returned to the
previous mode.
7. SLEEP 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 main-
tained.
*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 main-
tained.
8. DE-ICE Operation: De-ice operation is con-
trolled by sensing the indoor unit's heat-
exchanger temperature and timer.
De-ice ends by sensing of the processing
time by de-ice condition.
9. FAN SPEED: Manual (3 step), Auto (4 step),
Natural
Fan speed automatically varies depending
on both the difference between setting and
the room temperature.
10. COMPULSORY OPERATION:
For operating the air conditioner without
the remote controller.
The operating is the same function that
AUTO MODE in the remote controller.
Room Temp
Tr≥21°C+∆T
21°C +∆T>Tr
Operation Type
Cool Operation (Set Temp:24°C+∆T)
Heat Operation (Set Temp : 22°C+∆T)
3-1-2 Main controller function.

Samsung Electronics 3-3
Operating Instructions and Installation
11. SWING: BLADE-H is rotated vertically by
the stepping motor.
*Memory louve: When ON/OFF button is
pressed at stop state, the BLADE-H returns
to its original location which is operating
state before stop
*Swing auto: The BLADE-H can rotate
within about 35° in the original position set
by the SWING SET button.
*Swing set: Press the SWING SET button,
then the blade rotates vertically by 8°
The BLADE-H location is dispalyed on
REMOTE CONTROL. (total 7 steps)
12. Q.TIMER: Q. timer (quick timer) allows
reservation or cancel the timer on and timer
off quickly
When Q.timer button is pressed at operat-
ing state, LCD displays the polling state
sequentially.
The LCD also displays the time remaining.
13. TIMER: The air conditioner is turned
ON/OFF at a specified time using TIMER
ON/OFF.
* Timer LED lights on.
14. SELF TEST
*Interruption of electric power and Power
on.
*Abnormal condition of the room sensor.
*Indoor unit fan motor lock.
*Abnormal condition of the indoor unit's
heat exchanger sensor.
15. TIME SHORTENING: If the "Time short"
connector pin is shorted on the main P. C. B,
the compressor's three minutes delay func-
tion is cancelled, and each operation time is
shortened to one fiftieth of its original time.
16. 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"

3-4 Samsung Electronics
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 spread
evenly in a room.
5. Make sure that you install the indoor unit in
an area away from TVs, audio units, cord-
less phones, fluorescent lighting fixtures
and other electrical appliances (at least 1
meter).
6. Make sure that you install the indoor unit in
an area which provides easy pipe connec-
tion 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 accomo-
date 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
light.
(Install a separate sunblind if exposed to
direct 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 traffic.
6. Make sure that you install the outdoor unit
in area easy to drain condensed water from
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).
Note
1. Add “A” 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 accom-
modate 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-
trol unit in an area free from obstacles such
as curtains etc, which may block signals
from the remote control unit.
2. Make sure that you install the remote con-
trol unit in an area not exposed to
direct sunlight, and where there is no source
of heat.
3. Make sure that you install the remote con-
trol unit in an area away from TVs, audio
units, cordless phones, fluorescent lighting
fixtures and other electrical appliances (at
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.
MODEL
ASH180UE
ASH181UE
ASH2417ER
ASH1808DR
“A”
10g
40g

Samsung Electronics 3-5
3-2-2 Installation diagram of indoor unit and outdoor unit
Indoor unit check
points
Avoid up
slopes
Outdoor unit
check points
* Check for gas leak from the flare nut
connections with leak detector.
Right
Rear Down
250mm
minimum
350mm or more
Left rear
Left
GAS LEAK TEST Slope of drain hose * Piping may be laid to the rear, left, right or down.
Insulation of pipe connection area
* Perform gas leakage test first, and insulate the pipe
connection area.
Use an insulation tube for insulation as shown in figure.
The insulation
tube shall be
properly finished
not to allow
any gap. Vinyl tape
(purchase locally)
Insulation
tube
Hole dimension of bolts for the outdoor unit
Fix firmly if installed in an area affected by typhoons.
Tighten the flare nut by hand first, and tighten firmly with a spanner
For more information refer to the Installation Manual.
582 ø12
Remote control
Remote control holder
10
4
5 6
Connection
pipelengh
5mmax
5~10m
Air-purge
method
Refertothe
detailed
air-purge
procedure.
Coolant
adjustment
unnecessary
Add“A”gof
coolant
<R-22>for
every1m.
(Referto
thedetailed
coolant
charge
procedure.)
Airpurge
method
Purgeair
using
avacuum
pumporan
additional
coolant
cylinder.
Refrigerant
quantity
Seetable
right.
Add“A”gof
coolant
<R-22>for
every1m.
(Referto
thedetailed
coolant
charge
procedure.)
Class
CoolantadjustmentprocedureCoolantadjustmentprocedure
Coolant-quantity
Atinstallation Atinstallation Outer diameter Fixing torque Final torque
ø6.35mm 160kg .cm 200kg .cm
ø12.7mm 500kg .cm 550kg .cm
ø15.8mm 700kg .cm 750kg .cm
Model Coolant quantity Remark
ASH180UE 1300g Self refrigerant is included with shipment.
ASH181UE
ASH-2417ER 1750g Self refrigerantisincluded with shipment.
ASH-1808DR 1670g Self refrigerantis includedwith shipment.

3-6 Samsung Electronics
Operating Instructions and Installation
3-2-2(a) Fixing the Installation Plate
3-2-2(b) Purging the Unit
Installation plate
Pipe hole (ø65mm)
260mm
250mm 145mm
Indoor unit
Installation plate Weight 200mm 100mm
250mm350mm
Pipe hole
(ø65mm)
Determine the pipe hole position using the
paper pattern for installation and drill the pipe
hole (65mm inner diameter) so that it slants
slightly downward.
1. Install the installation plate horizontally on
structural members (studs, etc.) in the wall.
2. To mount the installation plate on a concrete
wall with anchor bolts, utilize the anchor bolt
holes as illustrated in the left figure.
3. When the anchor bolts are already driven in the
wall, also utilize the anchor bolts holes to secure
the installation plate. (If an anchor bolt is too
long, adjust the projecting length to 20mm or
less.)
1. When mounting installation plate at the win-
dow frame. Use the paper patten for installation
of the wood pillar.
2. As the left Fig.
Fix the wood pillar at the wood frame and
install installation plate with screw tap.
3. Fix the wood pillar with enough strength to
bear the weight of the indoor unit.
1. Open the Grille and remove the
screw securing the cover.
2. Pass the assembly cable through
the rear of the indoor unit and
connect the assembly cable to ter-
minals 1~5.
*Each wire is labelled with the
corresponding terminal number.
3. Assembly every parts by contrary
order to disassembly.
CUTTING A HOLE
MOUNTINGTHE INSTALLATIONPLATE
When the refrigerant piping are hooked up from the rear.
When the installation plate is directly mounted on the wall.
Wood pillar
Screw
Indoor
unit
Outdoor
unit
Screw wood
Mounting at the window frame.

Samsung Electronics 3-7
3-2-2(c) Piping and drain hose installation
1. Fix the drain hose right the refrigerant piping.
2. Be careful not to form a slack of the drain hose.
3. Do not allow the piping to jut out from the back of the indoor unit.
4. Insulate both of the refrigerant pipings so that dewing and troubles
may not happen.
5. Be careful in bending the pipes. The bending radius must be
100mm or larger.
3-2-2(d) Indoor unit installation
3-2-2(e) Indoor unit installation
Operating Instructions and Installation
A.Right-hand connection with piping
AUXILIARY POWER S/W INSTALLATION OF DRAIN LINEWIRING CONNECTION
C.Under-side connection with pipingB.Left-hand connection with piping
1. Cut out the knock-out piece from the
rightside of the rear body with a knife,
etc. Smooth the cut edges.
2. Cut out the Holder-pipe slit part.
3. Support the above section to be bent
with your hand and bend the pipes
there.
AuxiliarypowerS/W
shouldbeinstalled
nearindoorunitso
thateachaccessis
possible.
Main/Outdoorunitpower
cordsareconnectedto
upper/lowerterminal
ofauxiliarypowerS/W.
Indoorunitconnectorwireshouldbe
connectedtobothindoorunit
connectorandoutdoor
unitterminalboard
asshowninthe
figurebelow.
Inheatinganddeiceoperation,
condensedwatermaybegenerated.
Installdrainlineasfollowing
procedure.
1.Insertthedrainplugintobasehole
2.Andthenconnectdrainhosetodrainplug.
1. Cut out the knock-out piece from the
leftside of the rear body with a knife,
etc. Smooth the cut edges.
1. Cut out the knock-out piece from the
underside of the rear body with a knife,
etc. Smooth the cut edges.
2. Cut out the Holder-pipe on its slit part.
Set the drain hose in the inner part of the
indoor unit and the assembly cable in lower part of it.
Wind tape round them.
1. Pass the pipes
through the
hole in the
wall and hook
the indoor
unit to the
installation
plate at the
upper and
lower hooks.
2. Move the indoor unit to the right and
left to make sure that the unit is
securely hooked on to the installation
plate.
DRAINAGE
1.Run thedrainhosesloped downward.
2. Do notinstall the drain hose asillustratedbelow.
Do not form
a rise Do not put the drain hose end
into water
Do not wave
the hose Keep a distance at least 5cm
or more
Do not put the
drain hose end
in the ditch
Ditch
3.Putwater inthe drain panandmake surethatthewaterisdrained outdoor.
4.Whenconnecting the extension drain hose, insulate the insidepartof the
extensiondrainhose withshield.
Piping
Assembly cable Drain hose
Tape
Piping
B
C
Hook
here
distributind
board
Auxiliary
power S/W
EARTH WIRE
EARTH WIRE
(POWER CABLE)
(ASSEMBLY CABLE)
AAssembly cable
Installation plate Drain hose
Hole Drain plug
Base
Drain Hose

3-8 Samsung Electronics
3-2-2(f) Grounding
(The Parts for this work are optional.)
Operating Instructions and Installation
• A grounding terminal can be found on
the outdoor unit as illustrated. 1. When an existing grounding terminal is avilable. (Grounding wire of ø1.6mm or larger<solid
wire>or 2mm2or larger <standard wire>)
2. Use of a grounding electrode.
• Specifications of grounding electrode.
Terminal used exclusively
for grounding.
Steel coreCarbon plastic
PVC-Insulated(2mm2x3.5m), green Terminal, M4
Grounding resistance ;
Less than 100 ohms
(existing grounding electrode)
No. JOB EXPLANATION PRECAUTIONS
1 Determine the • Suitable location • Avoid sandy or gravelly soil as its grounding
grounding position. a) Place that is always dank. resistance is high.
b) Hard soil rather than loose sandy soil. • The grounding wire for the telephone line cannot
be used for the grounding of the air conditioner.
• Unsuitable location • When the grounding electrode is to be installed
a) Where there are underground structures or under a place with heavy traffic, its wire must be
facilites such as gas pipes, water pipes, connected firmly with the utmost care.
telephone lines, underground cables, etc.
b) A place 2m or less from the lightning arrester
grounding electrode and its cable.
2 Drive the grounding a) Dig a hole to the size illustrated,
electrode into position. and drive in the grounding electrode.
b) Cover the top of the grounding
electrode with excavated soil.
3 Put the grounding a) If the grounding wire is too short, connect an • The grounding wire should be a green
wire in order. extention lead to it. Solder the joint and insulated wire of ø1.6mm or 2mm2or larger.
wrap it with tape. • The soldered joint should not be buried
b) Fasten the grounding wire with staples. underground.
4 Check the a) After grounding work, measure the grounding
workmanship, resistance with a grounding resistance tester.
and provide
corrective b) If the resistance is above a specified level,
measures if drive the grounding electrode in deeper
necessary. or increase the number of grounding
electrodes.
5 Connect the Secure the grounding wire to the
grounding grounding terminal of the air conditioner
wire to the air
conditioner.

Samsung Electronics 3-9
• Flare modification procedure
3-2-2(g) Flare modification
• Tools used
Tightening
knob
Cutting wheel
Clamp handle
Bar
Cone
Roller
Yoke
1) Cut the pipe using a pipe cutter.
3) Insert a flare nut into the pipe and modifty flare.
• Unproper flaring
2) Remove burrs at the tip of the pipe cut.
Caution : Burrs not removed may result
in leakage of gas.
Outer diameter A(mm)
ø6.35mm 1.3
ø12.7mm 2.0
ø15.8mm 2.2
Oblique Raughness Burr
Point
down
DA
Inclined Surface
damaged Cracked Uneven thickness
Pipe Reamer

3-10 Samsung Electronics
Operating Instructions and Installation
3-2-2(h) Air-Purge Procedure
•Use the coolant of the outdoor unit to purge air inside indoor unit and pipe.
1. Remove the caps from the 2-way valve (B)
and the 3-way valve(A).
3. Check leakage of coolant not leaking.
Leaking
• Tighten pipe fixing area one more time
and go to ®Í if gas is not leaking.
•If gas continues to leak although the
pipe fixing area has been tightened
again, repair the leaking area,
discharge the coolant completely and
refill with the required amount of new
coolant.
not
leaking
4. Open the 2-way valve again.
7. Close the cap of each valve.
5. Open the service valve cap of the 3-way
valve and press the needle valve to
discharge gas for 3 seconds and leave it
for about 1 minute.
Repeat the above procedure for 3 times
to purge air.
8. Check each valve for leakage.
6. Open the 2-way valve and 3-way valve
completely
2. Turn the 2-way valve cock approx. 45°∆
counterclockwise to open it.
Close it about 10 seconds later.
2-way valve
3-way valve
Flare nut
Stopper
Valve body valve stem
Valve stem cap
AB
C
D
Indoor unit
Outdoor unit
Half union
Gas pipe sideLiquid pipe side
3way valve2way valve
Model Liquid pipe side Gas pipe side
ASH180UE 160(ø6.35) 500(ø12.7)
ASH181UE
ASH-1808DR 160(ø6.35) 500(ø12.7)
ASH-2417ER 160(ø6.35) 700(ø15.8)
•Valve cap tightening torque kg .cm

Samsung Electronics 3-11
Operating Instructions and Installation
3-2-2(i) Refrigerant Refill
• Fill the airconditioner with coolant, or refill when necessary during use.
1. Purge air(for new installation only).
3. Connect the tank to refill with Refrigerant
7. Stop operation of the airconditioner.
9. Close the cap of each valve.
8. Close the 3-way valve, disconnect the
pressure gauge, and open the 3-way
valve again.
4. Set the unit to cool operation mode.
5. Check the pressure indicated by the
pressure gauge(low pressure side).
* Standard pressure is should be
4.0~5.0kg/cm2in a reqular,
high operation mode.
2. Turn the 3-way valve clockwise to close,
connect the pressure gauge(low
pressure side) to the service valve, and
open the 3-way valve again.
6. Open the coolant tank and fill with coolant
until the rated pressure is reached.
* It is recommended not to pour the
coolant in too quickely, but gradually
while operating a pressure valve.
Outdoor Unit
Suspension
hook
High
pressure
gauge
Hand
wheel
Finger
tight
fittings
Connected to
high pressure
side
Compound
gauge
2-way valve 3-way valve
For mounting
other end of
hose when
not in use
Charging
line

3-12 Samsung Electronics
Operating Instructions and Installation
3-2-2(j) "Pump Down" Procedure
• 'Pump down' shall be carried out when an evaporator is replaced or when the unit is relocated in
another area.
1. Remove the caps from the 2-way valve (B)
and the 3-way valve(A).
3. Set the unit to cool operation mode.
(Check if the compressor is operating.)
5. When the pressure gauge indicates "0"
turn the 3-way valve clockwise to close.
4. Turn the 2-way valve clockwise to close.
6. Stop operation of the airconditioner.
7. Close the cap of each valve.
2. Turn the 3-way valve clockwise to close
and connect a pressure gauge(low
pressure side) to the service valve, and
open the 3-way valve again.
Relocation of the airconditioner
•Refer to this procedure when the unit is relocated.
1. Carry out the pump down procedure (Refer to the details of 'pump down').
2. Remove the power cord.
3. Disconnect the assembly cable from the indoor and outdoor units.
4. Remove the flare nut connecting the indoor unit and the pipe.
At this time, cover the pipe of the indoor unit and the other pipe using a cap or vinyl plug to avoid
foreign materal entering.
5. Disconnect the pipe connected to the outdoor unit.
At this time, cover the valve of the outdoor unit and the other pipe using a cap or vinyl plug to avoid
foreign material entering.
6. Make sure you do not bend the connection pipes in the middle and store together with the cables.
7. Move the indoor and outdoor units to a new locatioon.
8. Remove the mounting plate for the indoor unit and move it to a new location.
For mounting
other end of
hose when
not in use
2-Way Valve 3-Way Valve
Compound
gauge
Suspension
hook
High
pressure
gauge
Hand
wheel
Finger
tight
fittings
Connected to
high pressure
side

4-1
Samsung Electronics
4. Disassembly and Reassembly
4-1 Indoor Unit
Stop operation of the airconditioner and remove the power plug from the wall outlet before
repairing the 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 fix-
ing 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.

Disassembly and Reassembly
4-2 Samsung Electronics
No Parts Procedure Remark
2
3
4
Filter Frame
Ass'y Tray Drain
Main PCB
1) Loosen the left and right screw of the
Holder Filter, and Separate the Holder
Filter.
1) Do "®Á®Ë", above.
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.
1) Do "®Á®Ë®È", above
2) Take all the connector of PCB (2 piece)
upper side out.