Samsung ASA24C5 User manual

SERVICE Manual
CONTENTSAIR CONDITIONER
1. Precautions
2. Product Specifications
3. Operating Instructions and
Installation
4. Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views and Parts List
7. Block Diagrams
8. PCB Diagrams
9. Wiring Diagrams
10. Schematic Diagrams
ROOM AIR CONDITIONER
INDOOR
ASA24C5(6)ME
SC24AC5(6)
ASA18C9(0)ME
SC18AC9(0)
OUTDOOR
USA24C5(6)ME
SC24AC5(6)X
USA18C9(0)ME
SC18AC9(0)X
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1-1Samsung Electronics
1. Warning: Prior to repair, disconnect the
power cord from the circuit breaker.
2. Use proper parts: Use only exact replace-
ment 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 equip-
ment may cause problems later-intermittent
contact, for example.
4. Power Cord: Prior to repair, check the
power cord and replace it if necessary.
5. Avoid using an extension cord, and avoid
tapping into a power cord. This practice
may result in malfunction or fire.
6. After completing repairs and reassembly,
check the insulation resistance.
Procedure: Prior to applying power, mea-
sure the resistance between the power cord
and the ground terminal. The resistance
must be greater than 30 megohms.
7. Make sure that the grounds are adequate.
8. Make sure that the installation conditions
are satisfactory.
Relocate the unit if necessary.
9. Keep children away from the unit while it is
being repaired.
10. Be sure to clean the unit and its surround-
ing area.
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
O.K
Fig. 1-4 Clean the Unit
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MEMO
Samsung Electronics1-2
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2-1Samsung Electronics
2. Product Specifications
2-1 Table
Model
Item
Power Sourse
Capacity KW
Air circulation (High) m3/min
Moisture removal (High) Liters/h
Available voltage range V
Running amperes A
Power input kw
Power factor %
Energy efficiency ratio BTU/wh
Compressor locked rotor amperes A
Controls/Temperature control
Control unit
Timer
Fan speed Indoor/Outdoor
Air flow direction (indoor) Horizontal
Vertical
Comperssor
Refrigerant/Amount charged at rating g
Refrigerant control
(Sound pressure) Indoor Hi/Mi/Lo dB-A
Outdoor-Hi dB-A
Refrigerant tubing connections
Max. allowable tubing length at shippint m
Refrigerant tube diameter Narrow tube (in.)
Wide tube (in.)
Refrigerant tube kit/Accessories
Unit dimensions Height mm
Width mm
Depth mm
Package dimensions Height mm
Width mm
Depth mm
Weight Net kg
Shipping kg
ASA24C5(6)ME / SC24AC5(6)
Cooling only
220-240V, 50Hz
6.90(23,500)
14.0
3.2
198 ~ 264
11.6
2.50
95.0
9.4
59
Microprocessor / I.C Thermistor
Wireless remote control
Q-Timer / 24-Hour ON or OFF
3 Steps and Turbo / 2 Step
Manual
Auto
Rotary (Toshiba)
R410A / 1,550g
Capillary tube
49 / 47 / 45
61
Flare type
20
6.35(1/4")
15.88(5/8")
Optional / Hanger-plate
ASA18C9(0)ME / SC18AC9(0)
Cooling only
220-240V, 50Hz
5.30(18,000)
13.0
2.2
198 ~ 264
7.9
1.83
95.0
9.8
52
Microprocessor / I.C Thermistor
Wireless remote control
Q-Timer / 24-Hour ON or OFF
3 Steps and Turbo / 1 Step
Manual
Auto
Rotary (Toshiba)
R410A / 1,300g
Capillary tube
46 / 44 / 42
58
Flare type
15
6.35(1/4")
12.7(1/2")
Optional / Hanger-plate
Perfor-
mance
Electrical
Rating
Features
Dimensions
&
Weight
Indoor unit Outdoor Indoor unit Outdoor
275
1080
204
372
1153
272
13
16
638
880
310
719
1023
413
60
64
275
1080
204
372
1153
272
13
16
620
787
320
692
909
444
52.5
56.0
Remarks : Rating Conditions are :
Indoor air temperature : 27.0˚C DB/19.0˚C WB
Outdoor air temperature : 35.0˚C DB/24.0˚C WB
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Samsung Electronics2-2
2-2 Major Component specifications
■Indoor unit
Model
Part No.
Controls
Control circuit fuse
Type
Dia. and length mm
Fan motor model
Pols,rpm(at 240V)
Normal out W
Coil resistance(Ambient temp.20˚C) Ω
Safety devices Type
Operating temp. Open ˚C
Run capacitor µF x VAC
Type
Model
Rating
Coil resistance (Ambient temp. 25˚C) Ω
Coil
Rows x Steps
Fin pitch mm
Face area m2
ASA24C5(6)ME / SC24AC5(6)
PD-SH30ZC-01
Microprocessor
250V, 3.15A
Cross-Flow
ø95/L = 842
IC-9430SKJ5A
4P, 1350 RPM
40W
MAIN : 160Ω
SUB : 227Ω
17AM034A5
135 ± 5°C
2.0µF X 450VAC
MSFCC20A03
DC 12V
530Ω
AL-FIN/Copper tube
2 x 15
1.2
0.265
ASA18C9(0)ME / SC18AC9(0)
PE-S1452R-00
Microprocessor
250V, 3.15A
Cross-Flow
ø95/L = 842
IC-9430SKJ5A
4P, 1350 RPM
40W
MAIN : 160Ω
SUB : 227Ω
17AM034A5
135 ± 5°C
2.0µF X 450VAC
MSFCC20A03
DC 12V
530Ω
AL-FIN/Copper tube
2 x 15
1.5
0.265
PCB
Fan
&
Fan Motor
S-Motor
Heat
Exch.
■Outdoor unit
Model
Type
Compressor model
Normal output W
Comperssor oil kind
Comperssor oil cc
Oil Specific gravity
Coil resistance(Ambient temp.25˚C) Ω
Safety devices Type
Overloal relay
Operating temp. Open ˚C
Close ˚C
Operating amp(Ambient temp.)
Run capacitor µF x VAC
Type
Dia. and length mm
Fan motor model
Pols, rpm(at240V)
Normal output W
Coil resistance(Ambient temp.20˚C) Ω
Safety devices Type
Operating temp. Open ˚C
Close ˚C
Run capacitor µF x VAC
Coil
Rows x Steps
Fin pitch mm
Face area m2
USA24C5(6)ME / SC24C5(6)X
ROTARY
PA290X3F-4MS(E)
2570
RB68AF (P.O.E)
1400
-
Start winding : 2.20
Run winding : 1.07
UP2TF7225-141
Internal Line Break
165
95
73.0 AT 2-10 SECOND
45µF X 450VAC
Propeller
ø460
OSME-906SRC
6P, 850 RPM
70W
-
-
17AM034A5
135±5°C
4µF x 450VAC
AL-FIN / Copper tube
2 x 28
1.5
0.538
USA18C9(0)ME / SC18AC9(0)X
ROTARY
PA225X3F-4MSE
1950
RB68AF (P.O.E)
1200
-
Start winding : 2.68
Run winding : 1.35
UP3SE0391-T39
Internal Line Break
160
90
26.8A / 6~16 SECOND
45µF X 450VAC
Propeller
ø405
AMASS030AVEB
4P, 1050RPM
35W
-
-
17AM037A5
150±5°C
2.5µF x 450VAC
AL-FIN / Copper tube
2 x 28
1.5
0.500
Comp-
ressor
Fan
&
Fan Motor
Heat
Exch.
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2-3Samsung Electronics
2-3 Dimensions
2-3-1 Indoor Unit
275
1080
(Remote control)
2245
115
✳The feature is subject to be varied as a model.
(Front view)
Installation plate
204
(Rear view)
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Samsung Electronics2-4
Product Specifications
■18K BTU
(Front view) (Rear view)
320
620
582
787
340
2-3-2 Outdoor Unit
■24K BTU
(Front view) (Rear view)
310
638
660
880
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2-5Samsung Electronics
2-4 Pressure Graph
■ 24K BTU
10
9
8
7
6
20 25 30 35
Outdoor drybulb temp [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
10
9
8
7
6
20 25 30 35
Outdoor drybulb temp [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
■ 18 BTU
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MEMO
Samsung Electronics2-6
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3-1Samsung Electronics
3. Operating Instructions and Installation
3-1 Operating Instructions
3-1-1 The Feature of Key in remote controller
To select the 5 way function with the remote control, press the 5 way
button one or more times until the desired mode is selected.
Each time you press the 5 way button
Each 5 way indicator on the indoor unit comes on in or der.
Each time you press this button,
FAN SPEED is changed in the following order.
Adjust air flow vertically.
Press until the appearance. the sleep timer can be used when
you are cooling your room to switch the air conditioner off
automatically after a perriod of six hours.
The ON Timer enables you to switch on the air conditioner automatically
after a given period of time that is from 30 minutes to 24 hours.
To cancel the On Time, press the (Set/Cancel) button.
The Off Timer enables you to switch off the air conditioner automatically
after a given period of time that is from 30 minutes to 24 hours.
To cancel the On Time, press the (Set/Cancel) button.
Each time you press this button
Mode is changed in the following order
Temp. down button. To decrease the temperature by the pressing
the temperature button
Temp. up button. To increase the temperatute by the pressing
the temperature button
FUNCTION OF KEY
: Auto Mode : Fan Only
: Cool Mode : Dry Mode
(DOWN)
Power On/Off button to start and stop airconditioner or timer set up
Press until the appearance. the air condition cools or heats
the room as quickly as possible. after 30minutes, the air,
the airconditioner is reset automatically to the previous mode
NAMED OF KEY
(UP)
NO
1
2
3
4
5
6
7
8
9
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Operating Instructions and Installation
Samsung Electronics3-2
1. AUTO MODE : In this mode, operation
mode(COOL) is selected automatically by
the room temperature of initial operation.
∆T= -1°C, -2°C, 0°C+1°C+2°C
∆T is controlled by setting temperature
up/down key of remote controller.
*FAN SPEED : AUTO
2. COOL MODE : The unit operates according
to the difference between the setting and
room temperature. (18°C~30°C)
3. DRY MODE : Has 3 states, each determined
by room temperature.
The unit operates in DRY mode.
*Compressor ON/OFF Time is controlled
compulsorily(can not set up the fan speed,
always breeze).
*Protective function : Low temperature
release. (Prevention against freeze)
4. TURBO MODE : This mode is available in
AUTO, COOL, DRY, FAN 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.
*But, if you press the TURBO button in DRY
or FAN mode that is changed with AUTO
mode automatically.
5. SLEEP MODE : Sleep mode is available
only in COOL or 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.
6. FAN SPEED : Manual (3 step), Auto (4 step)
Fan speed automatically varies depending
on both the difference between setting and
the room temperature.
7. COMPULSORY OPERATION :
For operating the air conditioner without
the remote controller.
*AUTO : The operating is the same func-
tion that AUTO MODE in the remote con-
troller. And each time you press the button
the 5WAY function is changed as follow.
STD ➝ NATURE ➝ POWER ➝ SAVING ➝
SILENCE ➝ POWER OFF
Each time you press This button, 5WAY
function is changed in the following order
STD(standard) ➝ NATURE ➝
POWER(High-speed) ➝ Saving(Power-
Saving) ➝ SILENCE ➝ POWER OFF
❊ STD(standard)( ) : General operation
Mode
❊ NATURE( ) : The unit is operated
according to health
pattern control
❊ POWER( ) : The unit is operated in
powerful state
❊ SAVING( ) : The unit is operated in
power saving state
❊ SILENCE( ) : The unit is operated
quitely
Each mode has Auto, Cool and SLEEP
operation designed in advance.
3-1-2 Name & Function of Key in remote controller
Operation Type
Cool Operation
Room Temp.
Tr≥25˚C+∆T Compressor ON
Tr≤24˚C+∆T Compressor OFF
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Operating Instructions and Installation
3-3Samsung Electronics
8. SWING : BLADE-H is rotated vertically by
the stepping motor.
*Swing Set : Press the button under the
remote control is displayed on LCD the
and the blades move up and down. If the one
more time press the button, blades loca-
tion is stop.
9. 24-Hour ON/OFF Real Setting Timer. : The
air conditioner is turned ON at a specified
time using .
OFF TIMER : The air Conditioner is turned
OFF at a specified time using .
*ON TIMER : Only timer LED lights on.
*OFF TIMER : Both timer and operation
LED lights on.
10. SELF Diagnosis
11. 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".
Indoor unit room temperature sensor
error(open or short)
Check Point
LED DISPLAY
TIMER STD NATURE POWER SAVING SILENCE
LED
:blinking : LED off
Indoor unit heat exchanger temperature
sensor error(open or short)
Indoor fan mal function
EEPROM error
Option error(option wasn’t set up or
option data error)
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Samsung Electronics3-4
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(18✳✳:15meters, 24✳✳:20meters).
8. Make sure that you install the outdoor unit
in an area which is large enough to accom-
modate the measurements
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
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.
1. Add (18✳✳:30g, 24✳✳:40g) of refrigerant (R410A)
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 8 meters.
Note
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Operating Instructions and Installation
3-5Samsung Electronics
Cut the piping hole
sloped slightly
3-2-2 Installation diagram of indoor unit and outdoor unit
AIndoor unit gas leak test check point
Tape vinyl
Piping
Indoor unit
BDrain hose installation
Cut the piping hole
sloped slightly
Piping (Liquid) 1/4" Putty
Clamper tube
Installation plate
Installation tube Screw
Vinyl tape Drain hose
Piping may be laid to the rear, left,
right or down .
Right
Rear Down
70mm or more
250mm
or more
200mm or more
Rear
Left
3
1
56
7
4
8
9
1
2
3
4
5
6
7
8
9
2
Remote control
“H”metere
s maximum
Remote control holder
18K BTU Piping(Gas) 1/2”
24K BTU Piping(Gas) 5/8”
Model L H
**18** 15 8
**24** 20 8
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Operating Instructions and Installation
Samsung Electronics3-6
3-2-2(a) Fixing the Installation Plate
3-2-2(b) Purging the Unit
Installation plate
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 appro-
priate 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.
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 oppo-
site.
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.


512
(Unit : mm)
415
45
60
325255
(Unit : mm)
410~730
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Operating Instructions and Installation
3-7Samsung Electronics
3-2-2(c) Connecting the Assembly Cable.
N1 L1 1 2 34NL
N1 L1 1 2 34
1
L1
N1
E1
L1
N1
E
E
NLE
Indoor
unit
Outdoor unit
Circuit Breaker
(Main Power)
The indoor unit is powered from the outdoor 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 15 metres.
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.
4. Pass the assembly cable through the rear of the indoor unit and connect the assembly cable to terminals
N1, L1, 1, 2, 3.
• 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 screw.
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.
<✳✳18✳✳>
N1 L1 1 2 34NL
N1 L1 1 2 34
Indoor
unit
Outdoor
unit
Circuit Breaker
(Main Power)
3
2
1
L1
N1
E
3
2
1
L1
N1
E
E
NLE
<✳✳24✳✳>
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Operating Instructions and Installation
Samsung Electronics3-8
3-2-2(d) Installing and Connecting the Indoor Unit Drain Hose
Care must be taken when installing the drain hose for the indoor unit to ensure that any condensa-
tion water is correctly drained outside. When passing the drain hose through the 65mm hole drilled in
the wall, check that none of the following situations occur.
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 hose must
NOT slope upw
ards.
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
5cm
less
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Operating Instructions and Installation
3-9Samsung Electronics
3-2-2(e) Outdoor unit installation
AUXILIARY POWER S/W
WIRING CONNECTION
Auxiliary power S/W should be installed near indoor
unit so that each access is possible.Main/Outdoor unit
power cords are connected to upper/lower terminal of
auxiliary power S/W.
Indoor unit connector wire should be connected to
both indoor unit connector and outdoor unit terminal
board as shown in the figure below.
ON
OFF
N1 L1 1 2 34NL
N1 L1 1 2 34
3
2
1
L1
N1
E
3
2
1
L1
N1
E
E
NLE
Distributind
board
Auxiliary
power S/W
Indoor unit
Outdoor unit
Circuit Breaker
(Main Power)
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Operating Instructions and Installation
Samsung Electronics3-10
3-2-2(f) Flare Modification
Flare modification procedure
1) Cut the pipe using a pipe cutter.
• Tools used
2) Remove burrs at the tip of the pipe cut.
Caution : Burrs not removed may result in
leakage of gas.
3) Insert a flare nut into the pipe and
modify flare.
* Unproper flaring
Outer diameter A(mm)
ø6.35mm 1.3
ø9.52mm 1.8
ø12.7mm 2.0
ø15.8mm 2.2
90
D
A
Oblique Raughness Burr
Pipe
Reamer
Inclined Surface
damaged Cracked Uneven thickness
DA
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Operating Instructions and Installation
3-11Samsung Electronics
3-2-2(g) Air-Purge Procedureand pipe.
1. Connect each assembly pipe to the appropriate valve on the
outdoor unit and tighten the flare nut.
3 Open the valve of the low pressure side of manifold gauge
counter-clockwise.
6. Mount the valve stem nuts to the 2-way and 3-way valve.
And mount the service port cap to 3-way valve.
7. Check for gas leakage.
- At this time, especially check for gas leakage from the
3-way valve’s stem nuts, and from the service port cap.
5. Set valve cork of both liquid side and gas side of packed
valve to the open position.
2 Connect the charging hose of low pressure side of manifold
gauge to the packed valve having a service port (1/2” or
5/8” Packed valve) as shown at the figure.
A
B
C
D
Outdoor unit Indoor unit
Gas pipe side
Liquid pipe side
Vacuum Pump
B
(liquid)
Valve stem Stem cap
A
(gas)
4. Purge the air from the system using vacuum pump for about
30 minutes.
- After that, please recheck that pressure is staloilization.
- Close the valve of the low pressure side of manifold gauge
clockwise.
- Remove the hose of the low pressure side of manifold
gauge.
DB98-05464A(1)-1 4/18/02 8:01 PM Page 3-11