Samsung AD24A1(B1)E12 User manual

SERVICE Manual
CONTENTSAIR CONDITIONER
1. Precautions
2.ProductSpecifications
3. OperatingInstructions and
Installation
4.Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views andParts List
7. PCBDiagrams
8. Wiring Diagrams
9.Schematic Diagrams
ROOM AIR CONDITIONER
INDOOR UNIT
AD24A1(B1)E12
AD18A1(B1)E09
AD19A1(B1)E07
AD19A1(B1)E12
OUTDOOR UNIT
UD24A1(B1)E2
UD18A1(B1)E2
UD19A1(B1)E2

© Samsung Electronics Co., Ltd. NOV. 1998.
Printed in Korea.
Code No. DB81-10179A(1)

1. Warning: Prior to repair, disconnect the
power cord from the circuit breaker.
2. Use proper parts: Use only exact replacement
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 repair, check the power
cord 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 reassembly,
check the insulation resistance. Procedure:
Prior to applying power, measure the resis-
tance 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 surrounding
area.
Samsung Electronics 1-1
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
Fig. 1-4 Clean the Unit

1-2 Samsung Electronics
MEMO

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 " ", 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 " ", above
2) Take all the connector of PCB upper side
out.
(Inclusion Power cord)
3) Separate the outdoor unit connection wire
from the terminal block.
4) If pulling the Main PCB up. it will be taken
out.
(Separate the TRANS hook. it before).
1 2
1 2

Disassembly and Reassembly
4-3
Samsung Electronics
No Parts Procedure Remark
5
6
Heat Exchanger
Fan Motor and
Cross Fan
1) Do " 1 2 3 4 ", above.
2) Loosen the left screws of the heat
exchanger.
1) Do " 1 2 3 4 5 ", 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.
Lifting the heat exchanger up a little to
push the up side for separation from the
indoor unit

4-4 Samsung Electronics
4-2 Outdoor Unit
No Parts Procedure Remark
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.
<UD24A1(B1)E2>
<UD18A1(B1)E2/UD19A1(B1)E2>
<UD24A1(B1)E2>
<UD18A1(B1)E2/UD19A1(B1)E2>

Samsung Electronics 3-1
3. Operating Instructions and Installation
3-1 Operating Instructions
3-1-1 Name & Function of Key in remote controller
NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NAME OF KEY
MODE
(UP)
(DOWN)
TURBO
OFF
ON TIMER
OFF TIMER
SET
CANCEL
(UP)
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)
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.
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.
Use this button to cancel the timer on and timer off.
Use this button to reserve the timer on and timer off.
Set up the time that operation stop.
Set up the time that operation start.
Each time you press this button,
FAN SPEED is changed in the following order.
Adjusts air flow vertically,
each time you press this button.
Use this button for sleep operation.
(The SLEEP mode can be selected at COOL and HEAT mode.)
Set up the reserve or cancel the timer off quickly
Use this button to provide heavy duty cooling & Heating for 30 minutes.
Each time you press this button,
MODE is changed in the following order.: Auto Mode
: Cool Mode
: Dry Mode
: Fan Only
: Heat Mode
Temp. down button.
If the button is pressed once, the setting temperature is decreased by 1°C
Temp. up button.
If the button is pressed once, the setting temperature is increased by 1°C
On/Off Button. Use this button to start and stop air conditioner.
FUNCTION OF KEY
(DOWN)
TIME
T
I
M
E
R
C
O
V
E
R

3-2 Samsung Electronics
Operating Instructions and Installation
3-1-1(a) Heat Pump
1. AUTO MODE : In this mode, operation
mode(COOL, HEAT, DRY) is selected auto-
matically by the room temperature of initial
operation.
∆T= -2°C, -1°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. (18°C~30°C)
3. HEAT MODE : The unit operates according
to the difference between the setting and
room temperature.(16°C~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 slow-
ly(510 rpm), then switch to the selected fan
speed. This period is to allow the indoor
unit's heat-exchanger to prewarm before
emitting warm air.
*High temperature release function : The
outdoor unit for and compressor ON/OFF
control for safety operation, when the over-
heat is heat exchanger of indoor unit.
*De-ice : Deicing operation is controlled by
indoor unit's heat exchanger temperature
and accumulating time of compressor's
operation.
De-ice end by sensing of the processing
time by de-ice condition.
4. 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)
5. TURBO MODE : This mode is available in
AUTO, COOL, HEAT, 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.
6. 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.
7. FAN SPEED : Manual (3 step), Auto (4 step)
Fan speed automatically varies depending
on both the difference between setting and
the room temperature.
Room Temp
Tr≥21°C+∆T
21°C +∆T>Tr
Operation Type
Cool Operation (Set Temp:AUTO SETTING)
Heat Operation (Set Temp : 22°C+∆T)