Samsung AQ07A1VE User manual

SERVICE Manual
INDOOR UNIT
AQ07A1VE
AQ09A1VE/B
AQ12A1VE/B
OUTDOOR UNIT
UQ07A1VE
UQ09A1VE/B
UQ12A1VE/B
CONTENTSAIR CONDITIONER
1. Precautions
2.ProductSpecifications
3.OperatingInstructions and
Installation
4.Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views andParts List
7. Block Diagrams
8. PCBDiagrams
9. Wiring Diagrams
10. Schematic Diagrams
ROOM AIR CONDITIONER

© Samsung Electronics Co., Ltd. OCT. 1998.
Printed in Korea.
Code No. DB81-10197A(1)

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, 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 neces-
sary.
9. Keep children away from the unit while it is
being repaired.
10. Be sure to clean the unit and its surround-
ing 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

2-2 Samsung Electronics
2-2 Dimensions
2-2-1 Indoor Unit
2-2-1 Outdoor Unit
Air
in
(Front view) (Remote control)
(Rear view)
(Front view)
720 145 55
245
600
10
765
(Rear view)
Air out
Installation plate

2-3
Samsung Electronics
2-3 Refrigerating Cycle Block Diagram
INDOOR UNIT OUTDOOR UNIT
Heat
exchanger
(Evaporator)
Gas side
3-way valve
2-way valve
Liquid side
Capillary tube
Cooling
Gas leak check point
Heat
exchanger
(Condenser)
Heating
Capillary tube
Check valve
Compressor
4-way valve
T
T

2-4 Samsung Electronics
MEMO

Samsung Electronics 3-1
3. Operating Instructions and Installation
3-1 Operating Instructions
NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NAMED 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 reserve or cancel the timer on and timer off.
Use this button to reserve the timer on.
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.
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 on and 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.
Temp. up 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
3-1-1 Name & Function of Key in remote controller
C
O
V
E
RT
I
M
E
R
: Auto Mode : Fan Only
: Cool Mode : Heat Mode
: Dry Mode

Operating Instructions and Installation
3-2 Samsung Electronics
1. AUTO MODE : In this mode, operation
mode(COOL, HEAT, DRY) is selected auto-
matically 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. (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)
3-1-1 Name & Function of Key in remote controller

Operating Instructions and Installation
3-3
Samsung Electronics
8. 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.
9. SWING : BLADE-H is rotated vertically by
the stepping motor.
*Memory louver : When ON/OFF button is
pressed at stop state, the BLADE-H returns
to its original location which is operating
state before stop
*Swing Set : Press the button under the
remote control is displayed on LCD the ,
and the blades move up and down, about 43°.
If the one more time press the button, bla-
tles location is stop.
10. 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 oper-
ating state, LCD displays the polling state
sequentially.
The LCD also displays the time remaining.
11. 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.
*3 minutes delay timer.
12. SELF Diagnosis
13. 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"
ON TIMER
OFF TIMER
Interruption of electric power and Power on.
Check Point
LED DISPLAY
oper-
ation
TIMER FAN
LED
:blinking : LED off
Turbo
Abnormal condition of the room sensor.
Indoor unit fan motor lock.
Abnormal condition of the indoor unit's heat exchanger sensor.