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
Samsung Electronics
1-1
Page 4
M E M O
1-2
Samsung Electronics
Page 5
2. Product Specifications
2-1 Table
ModelAM24A1(B1)E2AM26A1(B1)B2
INDOOR UNITOUTDOOR UNITINDOOR UNITOUTDOOR UNIT
ItemAM24A1(B1)E12UM24A1(B1)E2AM26A1(A1)B13UM26A1(B1)B2
TypeWall-Mounting Multi Split
•The basic performance test is based on the piping of 5MT. (Be sure to check the installing conditions as extension of the piping
may lead to performance degradetion.)
Samsung Electronics
2-1
Page 6
2-2 Dimensions
2-2-1 Indoor Unit
Air
in
Air out
2-2-1 Outdoor Unit
(Front view)
(Rear view)
815182
(Remote control)
58
22
Installation plate
2-2
(Front view)(Rear view)
660
1000335
Samsung Electronics
Page 7
2-3 Refrigerating Cycle Block Diagram
INDOOR UNIT
(A)(B)
Heat
exchanger
(Evaporator)
T2
T1
Liquid side
Gas side
2-way valve
3-way valve
OUTDOOR UNIT
Capillary tube
Compressor-B
Compressor-A
Heat
exchanger
(Evaporator)
Cooling
Gas leak
check point
Refrigerating cycle temperature and pressure
STD PressurePiping Temp.(˚C)Temp. Condition(˚C)
Operating Condition(kg/cm2G)
3-way valveDBWBDBWB
Standard5.0~5.2111127193524
A or BMax over load6.0~6.3161532234326
Low temp.3.4~3.63221152115
Cooling
A + BMax over load6.0~6.3161532234326
Samsung Electronics
Standard5.0~5.2121027193524
Low temp.3.4~3.63221152115
T1T2
IndoorOutdoor
2-3
Page 8
M E M O
2-4
Samsung Electronics
Page 9
3. Operating Instructions and Installation
3-1 Operating Instructions
3-1-1 Name & Function of Key in remote controller
NO
NAMED OF KEY
1
2
3
MODE
4
5
6
7
8
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 on and 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,
Each time you press this button,
FAN SPEED is changed in the following order.
FUNCTION OF KEY
9
C
O
10
V
E
R
11
12
13
14
15
Samsung Electronics
T
I
M
E
R
ON TIMER
OFF TIMER
SET
CANCEL
TIME
(UP)
(DOWN)
Set up the time that operation start.
Set up the time that operation stop.
Use this button to reserve the timer on.
Use this button to reserve or 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)
3-1
Page 10
Operating Instructions and Installation
3-1-2 Name & Function of Key in remote controller
1. A U TO MODE : In this mode, operation
C O O L mode is selected automatically by the
room temperature of initial operation.
Operation Type
Tr≥ 24.5°C+∆TCompressor ON
Cool Operation
Tr≤ 24°C+∆TCompressor OFF
∆T= -2°, -1°C, 0°C+1°C+2°C
∆T is controlled by setting temperature
up/down key of remote contro l l e r
* FAN SPEED : A U TO
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. 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 )
Room Temp
4. TURBO MODE : This mode is available in
A U TO, COOL, 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.
5 . S L E E P MODE : Sleep mode is available
only in COOL m o d e .
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 .
6. 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
Samsung Electronics
Page 11
Operating Instructions and Installation
7 . 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.
8 .SWING : BLADE-H is rotated vertically by
the stepping motor.
9 .Quick OFF TIMER: OFF timer (quick timer)
allows reservation or cancel the timer on
and 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 .
1 0 . 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.
11 . 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.
L E D
:
b l i n k i n g
: LED off
1 2 . 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"
Samsung Electronics
3-3
Page 12
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.
3-4
Samsung Electronics
Page 13
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
1
3
2
Tape vinyl
B Drain hose installation
Cut the piping hole
sloped slightly
Piping may be laid to the rear, left,
right or down .
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
Samsung Electronics
Page 15
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.
4 . Pass the assembly cable through the rear of the indoor unit and
connect the assembly cable to terminals 1 to 5.
• Each wire is labelled with the corresponding terminal number.
5 . Pass the other end of the cable through the 65mm hole in the wall.
6 . Replace the connector cover, carefully tightening the scre w.
7 . Close the front grille.
8 . For further details on how to plug the other end of the assembly
cable into the outdoor unit, refer to page 3-10.
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 hoseExtension drain hose
Samsung Electronics
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
Page 16
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.
Outdoor unit check point
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 that the wire number of the indoor unit and the terminal number of the out-
door unit.
3 Connect the earthing wires to the earth terminals.
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.
Indoor unit
Outdoor unitTerminal Block
4
FAN
3
COMP
2
1
(N)
(L)
3
COMP
FAN
4
1(L) 2(N)
Earth
terminal
Circuit Breaker
(Main Power cable)
3-8
A-unit
Earth
terminal
Earth
terminal
B-unit
Samsung Electronics
Page 17
Grounding
Operating Instructions and Installation
(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
a v i l 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 plasticSteel core
PVC-insulated wire(2mm2x3.5m), greenTerminal, M4
Samsung Electronics
3-9
Page 18
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
D
A
Outer diameterA(mm)
ø6.35mm1.3
ø9.52mm1.8
ø12.7mm2.0
3-10
InclinedSurface
damaged
CrackedUneven
thickness
Samsung Electronics
Page 19
Operating Instructions and Installation
3-2-2(g) Air Purging
CAUTION
The air in indoor unit and in the pipe must be purged. If air remains in the refrigeration pipes, it will affect the compressor,
reduce to cooling/heating capacity, and could lead to a malfuction. Refrigerant for air purging is not charged in the outdoor unit.
Use additional refrigerant as shown at the right figure. Each unit must be purged in turn
1. Check the piping connections
2. Connect the charging hose of low pressure side of
Manifold gauge to the packed valve having a charging
port(1/2” Packed valve)
3. Open the valve of the low pressure side of Manifold
gauge counterclockwise for 10 seconds, and then close
it to closed position.
4. Check for gas leakage.
-Check the flare connections for gas leakage.
5. Purge the air from the system.
-Loosen the liquid side(1/4”) flare nut after gas leakage
check
-Open the low pressure side valve of the Manifold
gauge for 10 seconds to purge the air from the system.
Repeat this three times or more.
-Tighten the liquid side(1/4”) flare nut when the low
pressure of the manifold gauge indicates about
0.5Kg/cm2.
6. Set valve cork of both liquid side and gas side of
packed valve to the open position.
7. Mount the valve stem nuts to the 2-way and 3-way
valve. And mount the service port cap to 3-way valve
8. 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.
INDOOR
A-UNIT
INDOOR
B-UNIT
liquid side
Gas side
Pipeline
Flare Nut
Valve cork
Pipeline
Outdoor
unit
Charging Port
Charging hose of
Low pressure hose
Samsung Electronics
<Structure of 3-way valve>
3-11
Page 20
Operating Instructions and Installation
3-2-2(h) Refrigerant Refill
If connecting pipe of more than 10 metres is installed, additional refrigerant should be charged by
extra metre. You don’t have to charge additional refrigerant up to 10 metres of connecting pipe.
1. Remove the valve stem cap and service port of 3-way
valve.
2. Connect the charging hose of low pressure side of
Manifold gauge to the packed valve having a charging
port(1/2” Packed valve) as shown at the right figure.
3. Operate the unit at the cooling mode.
4. Slowly open the valve of the low pressure side of
Manifold gauge counterclockwise until the low pressure of manifold gauge indicates 4.8 to 5.5 kg/cm2at
the high cool operation (1-unit operation) and the standard temperature.(for details, see the page 3-14)
It is recommend that refrigerant should be slowly put
in. If the refrigerant is put in too quickly, compressor
will be damaged.
•Piping length and the height
Pipe Size
Max.piping
length
A
A-UNIT
B-UNIT
Additional refrigerant charg e
( R 2 2 , g )
• When length of the pipe is
over 5u by the unit, you
should charge
the refrigerant Formulas
A-UNIT : 10gx(La-10)/m
B-UNIT : 10gx(Lb-10)/m
(La:the length of A-unit’s
pipe Lb:the total length of
1 . Confirm that both the 2-way and 3-way valves are
set to the open position.
(1) Remove the valve stem caps.
(2) Be sure to use a hexagonal wrench to operate
the Gas side valve stems.
2 . Operate the unit for 10 to 15 minutes.
3 . Stop operation and wait for 3 minutes, then con-
nect the charge set to the service port of the 3-way
v a l v e .
(1) Connect the charge hose with the push pin to
the service port.
Operating Instructions and Installation
2-Way Valve
4 . Air purging of the charge hose.
(1) Open the low-pre s s u re valve on the charge set
slightly to air purge from the charge hose.
5 . Set the liquid side 2-way valve to the closed posi-
t i o n .
6 . Operate the air conditioner at the cooling cycle
and stop operation immediately after setting the
3-way valve to the closed position when the
gauge indicates 0 kg/cm2G .
If the unit can not be operated at the Cooling
Mode(weather is rather cool), operate the unit at
the Trubo Mode. So that the unit can be operated.
7 . Disconnect the charge set, and mount the both 3-
way valve’s stem nuts and the service port cap.
Relocation of the air conditioner
• Refer to this pro c e d u re when the unit is re l o c a t e d .
1. Carry out the pump down pro c e d u re
( 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 material entering.
Cap
3-Way Valve
5. Disconnect the pipe connected to the outdoor
u n i t .
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
l o c a t i o o n .
8. Remove the mounting plate for the indoor
unit and move it to a new location.
Samsung Electronics
3-13
Page 22
Operating Instructions and Installation
3-2-3 Technical Document
•Cooling Characteristics - Outdoor Te m p e r a t u re
Stop operation of the air conditioner and remove the power cord before repairing the unit.
4-1 Indoor Unit
NoPartsProcedureRemark
1Front 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.
Samsung Electronics
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.
4-1
Page 24
Disassembly and Reassembly
NoPartsProcedureRemark
2
3
Filter Frame
Ass'y Tray Drain
1) Loosen the left and right screw of the Holder
Filter, and Separate the Holder Filter.
1) Do ①② , 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.
4-2
4
Main PCB
1) Do " ①② ", above
2) Take all the connector of PCB upper side out.
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).
Samsung Electronics
Page 25
Disassembly and Reassembly
NoPartsProcedureRemark
5
Heat Exchanger
1) Do " ①②③④ ", 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
6
Fan Motor and
Cross Fan
1) Do " ①②③④⑤ ", above.
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.
Samsung Electronics
4-3
Page 26
4-2 Outdoor Unit
NoPartsProcedureRemark
1
2
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.
4-4
Samsung Electronics
Page 27
5. Troubleshooting
5-1 Items to be checked first
1 ) Is the voltage of the power corre c t ?
The input voltage shall be rating Voltage ±10% range.
The airconditioner may not operate properly if the voltage is out of this range.
2 ) Is the link cable linking the indoor unit and the outdoor unit linked pro p e r l y ?
The indoor unit and the outdoor unit shall be linked by 5 cables.
Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.
Otherwise the airconditioner may not operate pro p e r l y.
3 ) When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the
malfunction of the airc o n d i t i o n e r.
NOOperation of air conditioner
1The COOL operation indication LED (Green) blinks when a
power plug of the indoor unit is plugged in for the first time.
2In a COOL operation mode, the compressor does not
operate at a room temperature higher than the setting
temperature that the IN DOOR FAN should operate.
In a HEAT operation mode, the compressor does not
operate at a room temperature lower than the setting
temperature that indoor fan should
operate.
3Fan speed setting is not allowed in AUTO or DRY mode.
4Compressor stops operation intermittently in DRY mode.
5Timer LED only of the indoor unit lights up and the
air conditioner does not operate.
Explanation
It indicates power is on. The LED stops blinking if the operation
ON/OFF button on the remote control unit is pushed.
In happens after a delay of 3 minutes when the compressor is reoperated. The same phenomenon occurs when a power is on.
As a phenomenon that the compressor is reoperated after a delay of
3 minutes, the indoor fan is adjusted automatically with reference
to a temperature of the air blew
The speed of the indoor fan is set to LL in DRY mode.
Fan speed is 5 steps is selected automatically in AUTO mode.
Compressor operation is controlled automatically in DRY mode
depending on the room temperature and humidity.
Timer is being activated and the unit is in ready mode.
The unit operates normally if the timer operation is cancelled.
6The compressor stops intermittently in a COOL mode or DRY
mode, and fan speed of the indoor unit decreases.
The compressor stops intermittently or the fan speed of the indoor unit
decreases to prevent inside/outside air frozen depending on the
inside/outside air temperature.
4 ) Indoor unit observes operation condition of the air conditioner, and displays self diagnosis details
on the display panel.
NODisplay
1 Operating LED blinking (1Hz)
2 TIMER LED blinking (1Hz)
3 O P E R ATING and TIMER LED blinking (1Hz)
4 FAN LED blinking (1Hz)
Samsung Electronics
Restore from power failure (input initial power)
Indoor unit Room sensor Error (open or short)
Indoor unit heat exchanger temperature sensor Error (open or short)
Indoor fan malfunctioning (for speed is Below 38Orpm)
Self Diagnosis
5-1
Page 28
5-2 Fault Diagnosis by Symptom
5-2-1 No Power (completely dead)-Initial diagnosis
1) Checklist :
(1) Is input voltage normal?
(2) Is AC power linked corre c t l y ?
(3) Are connections between primary side, secondary side of the power transformer and PCB good.
(4) Is output voltage of DC regulator IC KA7812 (IC01) normal? (11 V D C - 1 2 . 5 V D C )
(5) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC)
2 )Troubleshooting pro c e d u re
NO
YES
Replace PCB
display
Is DC voltage of PCB
display normal?
NO
Is 198~264VAC
applied to the
primary side of the power
transformer?
NO
•Check linkage between
power cord and
terminal tap
•Check fuse
Is 14~18VAC appear in
the secondary side of the
power transformer?
YESNO
Replace power
transformer
Replace resonator (X501)
Is operation normal?
YES
OK
Remove power cord and plug in again
in approx. 5 seconds
Is operation lamp blinking?
Does operation start when
run/stop button on the remote
controller unit pushed?
Is transmission display of the remote
controller unit blinking?
Is "beep"sound heard from the main
NO
Is DC voltage of the PCB module
Are voltages of #62 (compressor),
#60(4 way valve) and #61 (outdoor fan)
of the micom normal? 5VDC
Is voltage of #63 (indoor fan) of the
DC5V
Is voltage at #32 terminal of the Micom normal?
Is voltage at #64 terminal of the Micom normal?
Is voltage at #25 terminal of the micom
Are voltage at #30 and #31 of the
NO
NO
YES
NO
YES
unit?
YES
normal?
YES
micom normal?
10ms
NO
YES
normal?
10ms
YES
micom normal?
100ns
YES
Replace
micom
0VDC
5VDC
YES
NO
NO
YES
NO
NO
Normal
Refer to remote control
unit fault diagnosis
Replace PCB
module.
Are voltages at RY71(Compressor)
RY73(4-way valve) and SY72(outdoor fan)
normal? DC12V
Is voltage at SS71(indoor fan)
YES
Check connections
compressor 4-way
valve, outdoor fan and
indoor fan.
Is output voltage of ICO2 normal?
YES
Check PCB pattern.
Replace main PCB.
Is voltage output terminal of
D101~D105(IN4007) normal?
YES
OK
NO
Replace
RY71, RY73,
RY72 and
SS71
NO
Replace ICO2
NO
Replace IN4007
5-2
Samsung Electronics
Page 29
5-2-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is the indoor unit fan motor properly connected with the connector (CN73)?
(2) Is the AC voltage corre c t ?
(3) Is HALL IC in indoor fan motor properly connected with the connector (CN43)?
(4) Is the running capacitor properly connected with the terminal?
2 )Troubleshooting pro c e d u re
After unplugging out the power cord should
be reconnected within five seconds.
YES
Troubleshooting
Does the operating lamp(Green) blink?
YES
Does the Solid State Relay(SS71) work
properly?
Test rod location
+
SS71-SS71-12V
Is the supply voltage of the fan
Test rod location
PCB CN73
-
YES
motor sufficient?
Condition
Fan operateAC 180V
Normal
Voltage
Normal
voltage
NO
NO
NO
Check as in the procedur “NO power parts”
Refer tp page 5-2.
Microcomputer is out of order.
PCB is
out of order.
PCB should
be replaced.
Samsung Electronics
YES
Fan motor
is out of order.
MF-C is out of order
Replace MFC
Fan motor
should be replaced.
5-3
Page 30
Troubleshooting
5-2-3 When the Outdoor Unit Does Not Operate. (Initial Diagnosis)
1 )Checklist :
(1) Is input voltage normal?
(2) Is the set temperature of the remote control higher than room temperature in COOL m o d e ?
(3) Is the POWER IN connector (terminal-tab) linked corre c t l y ?
(4) Is the outdoor unit properly connected with the TERMINAL BLOCK connector(5P)?
1) Is AC 198 - 264V applied relay between Terminal Tap(TB71)
and RY 71 terminal No. 3
2) Is AC 198 - 264V applied relay between Terminal Tap(TB71)
andCN 71 terminal No. 1
YES
NO
YES
NO 1
1 NO
YES 3
Check as in the procedure "No Power parts"
Refer to page 5-2.
Room temperature sensor is
out of order
2
Microcomputer is
out of order.
Power relay is
out of order
A Room operation
“A”Compreessor or outdoor fan-motor replaced
2 NO
PCB should be checked.
Power relay should be
PCB should be
checked.
replaced.
B Room or C Room operating
Proceed to the checking points for the outdoor unit.
5-4
Is the room sensor normal register?
10°C20°C30°C
17.96k Ω12.09k Ω8.3k Ω
YES 3
Samsung Electronics
Page 31
5-2-4 When the UP/DOWN Louver Moter Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is input voltage normal?
(2) Is the UP/DOWN louver motor properly connected with the connector (CN61)?
2 )Troubleshooting pro c e d u re
Remove power cord and plug in again in approx. 5 seconds.
Troubleshooting
Is operating lamp blinking?
Y
Does operation start when swing button of the remote con-
Y
Check as in the procedure "No Power
parts". Refer to page 5-2.
Y
trol unit pushed?
N
Voltage at pin #33-#36 of micom (ICO4)
change?(Squarewave)
Y
Volatge at pin #10, #11, #12, #13 of IC05 (KID65003)
change?(Squarewave)
Y
N
N
Micom (IC04) is faulty.
Driver IC05 (KID65003) is faulty.
UP/DOWN louver motor is faulty.
5-2-5 In the mode, When there is no warm air current. Check this first;
(1) Is the set temperature of Remote Control lower than room temperature in Heat mode?
(2) Is the Indoor PCB properly connected with the CN71 connector?
Normal
After training on, the heating operation
should start in five minutes.
Is the munber #60 of Micom (IC04) DC 4.8 V?
Is the munber #15 of IC07 (KID65003) LOW?
Is the voltage between CN71 #3 and RY71 NO3 AC198~264?
Abnormal 4way valve of Outdoor Unit.
4 way valve should be replaced
Samsung Electronics
NO
YES
YES
YES
or connecting Cable
or connecting Cable Check.
YES
NO
NO
NO
Normal
Abnormal Micom
Abnormal IC07
Abnormal RY73
PCB should be replaced.
5-5
Page 32
Troubleshooting
5-2-6 If Operation By Remote Control Unit Is Impossible. (Initial Diagnosis)
1) Troubleshooting pro c e d u re
Remove power cord and plug in again approx. 5 Seconds
Is operation lamp blinking?
Y
“ “ sound heard from the indoor unit when
ON/OFF button on the remote control unit pushed?
N
Voltage of battery less than 2.5V (Remote Control Unit)?
N
LCD display status of REMOCON normal?
Y
Transmission display lamp ( ) blinking when
ON/OFF button on the remote control unit pushed?
Y
Voltage at PIN #30 of Remocon Micom change?
Y
Voltage at collecter of Q601 or Q602 change?
Y
N
Check as in the procedure “NO Power
parts”. Refer to page 5-2.
Y
Y
N
N
N
N
Normal
Replace battery.
LCD is faulty.
Replace button.
Micom is faulty.
Q601(C4375Y) or Q602(C1623Y) is faulty.
IR LED(CL-1L5EU) is faulty.
5-6
Voltage at pin #26 of micom (IC04) change (INDOOR UNIT)?
Y
Micom (IC04) is faulty.
N
Receiver module is faulty.
Samsung Electronics
Page 33
5-3 PCB Inspection
5-3-1 Cautions for Part Replacement
1 . The human body carries much static
e l e c t r i c i t y. Before touching a part for re p a i r,
replacement or the similar purpose, be sure
to touch a grounded metallic portion by
hand to let the static electricity go thro u g h
the matallic portion to the earth.
Espectially when handling any micro
computer or IC, carefully remove such static
electricity before touching them.
2 . When repairing any part on a work bench,
be sure to place an insulative sheet on the
bench and always keep the sheet surface
neat without any metal fragments. If any
such fragment touches a part, a secondary
t rouble will possibly be caused in the part.
Troubleshooting
5 . When soldering the lead wires of any new
part, be sure to polish them using an emery
paper or the like before solding them.
Since the lead wires of any new part are
c o v e red with an oxide film, solder cannot
a d h e re to the lead wires if not polished.
6 . When soldering any part, care should be
e x e rcised not to apply any high-wattage
soldering iron to the part for a long time.
Some parts are of so low a heat re s i s t a n c e
that they may be broken or have the
p roperties changed if a soldering iron is so
applied (Otherwise, the pattern may
possibly be separated and raised).
3. B e f o re replacing any parts, be sure to turn
o ff the power supply. If such replacement is
done with the power supply kept on, an
electric shock, short circuit or destruction of
a part may re s u l t .
4. During replacement or repair of a part,
c a refully handle it : The printed circ u i t
b o a rd has fine lead wires (jumper wires) and
glass-made parts (diode) on its substrate.
So if a circuit board is roughly handled, such
lead wires and parts will be easily broken or
damaged by bending or shock.
5-3-2 Procedure
The parts should be replaced in the following pro c e d u re .
Check for any faulty part.
Detach the faulty part.
7. The heat of the soldering iron should be
t r a n s f e red to the entire object to be soldere d .
If the solder pieces are not well fused due to
i n s u fficient transfer of the heat from the
soldering iron, no satisfactory electrical
continuity can be assured even if the
s o l d e red objects appear well connected to
each other.
8 . The solder used should be limited to a
minimum. If excessive solder is used, it will
cause inter-pattern contact, which may
cause malfunction of the circ u i t .
Replace it with a new part.
Check the operation of the new part.
The repair is completed.
Samsung Electronics
5-7
Page 34
Troubleshooting
5-3-3 Detailed Procedure
No.
Pull out the power plug from the
1
AC terminal and confirm the fuse
on the PCB assembly
Turn the power on.
2
If lamp blinks trouble is not
related to the items 1 through 4
on the right.
Set operating mode when RMC
3
switch pushed.
Except for [FAN]mode and
[TIMER] mode.
Malfunction
Checking point (symptoms)
1. Is the fuse blown?
Voltage check
1. AC voltage at both end of transformer Primary?
198 - 264V~
2. AC voltage at both end of transformer secondary?
14- 18Vac
3. DC voltage at OUT and GND of IC01
(KA7812)? 12VDC
4. DC voltage at OUT and GND of IC02? 5VDC
5. DC voltage at Q201 Base and GND change?
squarewave
Voltage check
1. Voltage of relay (RY71) coil Voltage at
pin#12, pin#5 of IC07 : 12VDC
Causes
1. Voltage over
2. Indoor unit fan motor short-circuit.
1. Irregular power code or power fuse,
or poor wiring.
2. Transformer is faulty.
3. Power circuit is faulty.
4. Power circuit is faulty.
5. Q201 is faulty.
D101~D104 (1N4007x4)
1. Relay(RY 71) coil is open.
IC07 is faulty.
Set operating mode when RMC
4
switch pushed.
1. COOL mode
2. Fan speed [AUTO]
3. Set temperature lower
than room temperature
4. Continuously operation.
Set operating mode when
5
RMC switch pushed.
1. [FAN] mode
2. Fan speed [Hi]
3. Continuously operation
2. Voltage at Terminal Tap (TB71 or 72) and
RY71 Terminal N0 3 . 198- 264V~
1. Compressor does not operate.
1. Voltage at 3 5 both ends of CN73 :
above 180V~
2. Indoor unit fan motor does not operate.
2. Relay(RY 71) contactor is faulty.
1. Temperature of Heat exchange
is lower.
2. PCB is faulty.
3. Room sensor or Heat exchanger
temperature sensor is faulty
1. Indoor unit fan motor is faulty.
2. Poor connection of indoor fan motor
and connector of RPM sensing (CN43)
5-8
Samsung Electronics
Page 35
5-4 Fault Diagnosis of Major Parts
Troubleshooting
Parts
Temp.Sensor
Heat ex. Sensor
Indoor Fan Motor
Diagnosis
Measure resistance with a tester.
Normal8KΩ~27KΩ at ambient temperature (+0°C ~ +30°C)
Abnormal∞, O Ω … open or short
Measure resistance between terminals (CN73) with a tester
NormalAt ambient temperature (10°C ~ 30°C)
betweenResistance
Red, Yellow190±10Ω
Red, Blue165±10Ω
Abnormal
Measure the voltage between ground and signal wire of the fan motor
Normal
betweenVoltage
Gray, Orange05V~4.5V
Outdoor Fan Motor
Stepping Motor
(UP/DOWN swing motor)
Yellow, Orange5V
AbnormalAbnormal if voltage does not change from 0V to 5V.
Normal At ambient temperature (10°C ~ 30°C)
betweenResistance
Black, Yellow189±10Ω
Black, Red190±10Ω
Abnormal ∞, O Ω … open or short
Measure resistance between red wire and each terminal.
Normal Approx. 380Ω at ambient temperature (20°C ~30°C)
Abnormal ∞, O Ω … open or short
Use this page to keep any special servicing information. (Service Bulletin, etc.)
If only parts number changes, Just change parts number directly on parts list.
And if you need more information, please see the service bulletin
Copyright
®œ 1995 by Samsung Electronics Co., Ltd.
All rights reserved.
This manual may not, in whole or in part, be
copied, photocopied, reproduced, translated,
or
converted to any electronic or machine readable
from without prior written permission of
Samsung Electronics Co., Ltd.
SyncMaster 17GLi/CMG7387L Service
Manual
First edition June 1995.
Tr a d e m a r k s
Samsung is a registered trademark and
SyncMaster 17GLi/CMG7387L and
MacMaster
Cable Adapter are trademark of Samsung
Electronics Co., Ltd.
Macintosh, Centris, Quadra, Duo Dock, and
Power Macintosh are trademark of Apple
computer, Inc.
All other trademarks are the property of their
respective owners.
Page 50
10. Schematic Diagrams
10-1 Indoor Unit
BLK(L)
SKY-BLUE
BROWN
BLACK
PNA4612MøøXD
220 1/8W
Samsung Electronics
10-1
Page 51
10-2 Remote Control
10-2
Samsung Electronics
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.