Daewoo DSC-097L Installation and user guide

Manual de servicio
ACONDICIONADOR DE AIRE
DSC-097L DSC-127L

CONTENTS
PP
11
Contents.....................................................................................1
Service and Maintenance ..........................................................2
Exploded views and part list .....................................................15
Disassembly and reassembly ....................................................9
Block diagram ..........................................................................21
Controls specification ........................................................ ........4
Troubleshooting ........................................................................13
Wiring diagram .........................................................................20

1
1
3
3
2
2
1
1
3
3
2
2
Air Conditioner no use for a long time.
Start fan only for 3-4 hours to comple-
tely dry the inside of the indoor unit.
Set COOL mode or HEAT mode,
and select the highest setting tempera-
ture, then fan turns.
Turn off air conditioner, unplug the
power plug. Otherwise, the accumul-
ated dirt may cause fire.
FAN OPERATION
Take the batteries out of the remote
controller.
Want to use the Air Conditioner
Clean filters and replace them to origi-
nal position.Clean indoor unit with soft
cloth.
Do not use gasoline, benzene, thinner,
grinding powder, detergent,insecticide
etc. to clean units as they can hurt the
units.
Inlets and outlets of indoor and outdo-
or units shall not be covered/blocked.
Ground wire shall not be loose.
Put in batteries, and plug the power
plug.
SERVICE AND MAINTENANCE
22

33
11
1
4
4
3
3
2
2
1
1
4
4
3
3
2
2
Filters should be cleaned once every two weeks.
Take out filters.
Clean filters with a vacuum cleaner
or by typing them gently. ( If they are
very dirty, wash them in warm water
below 45 dissolved with neutral
scouring agent.)
Clean filters with clean water, then
dry them in cool air.
Insert them at original position, then
push down and close front panel.
Clean deodorization filters and air cleaner.
Take out filters first, then take out
deodorization filter and air cleaner.
Clean deodorization filter, air clean-
er with warm water below 45
dissolved with neutral scouring agent.
Clean filters with clean water, then
dry them in cool air.
Insert them at original position, then
push down and close front panel.
Deodorization filter, Air cleaner, Filters must be cleaned termly.
Open front panel only after air conditioner stops completely.
C
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SERVICE AND MAINTENANCE

CONTROLS SPECIFICATION
1
1
2
2
ABBREVIATION
Ts: Setting Temperature
Tr: Room Temperature
Ti: Indoor defrost sensor temperature
To: Outdoor defrost sensor temperature
OPERATION OF MAIN BOARD
COOL MODE
If Tr > Ts, cool operation is activated. Compressor and outdoor fan are turned on.
Indoor fan runs at the set speed.
If Tr Ts-1 cool operation is terminated. Compressor and outdoor fan are
turned off.
The range of Ts is 16-31
Indoor fan speed can be adjusted for low, medium, high and auto.Compressor will
be delayed for 3 minutes before it is turned on or off.
C
C
Indoor de-ice
This process is checked by the indoor defrost sensor (Ti). If Ti =2 , indoor fan increase
to high speed, when Ti -1 for 1 minute continuously, compressor and outdoor fan are
turn off , indoor fan increases to high speed . When Ti 8 for 5 minutes continuously,
compressor and outdoor are turn on.
de-ice operation is on for more than 8 minutes, system will return to normal operation.
C
C
AUTO CHANGEOVER MODE
Per Room
Temperature (RT)
Cooling only type
Mode PRE-SET Temperature PRE-SET Temperature Mode
24
26
RT-2 RT-2
Cool Cool
Dry RT-2 RT-2
Dry
Heat
Heat pump type
above 26
25-26
23-25
below 23
C 24 C C
C
C
C
C
FAN MODE
Indoor fan runs at the set speed while compressor and outdoor fan are turned off.
Indoor fan speed can be adjusted for low, medium and high.
When this mode is selected, the system will change from AUTO COOL to AUTO
DRY to AUTO HEAT mode according to the room temperature and will run
according to the programmed temperature set points as in the following table.
If the unit is restarted after it is stopped for less than 2 hours, it will resume at the
previously established mode before it was stopped. (i.e. AUTO COOL or AUTO
DRY or AUTO HEAT)
If the unit is restarted after it is stopped for more than 2 hours, it will run in a new
mode according to the room temperature when it is restarted.
During this mode the temperature set point can only be set + or - 2 Deg. C of the
room temperature.
C
44
CC

Outdoor de-ice
After 40 minutes of continuous heating operation, if To -4 , the outdoor de-ice
operation is activated. Compressor is turned off. Indoor fan speed reduces to low
speed. After 30 seconds delay, 4 way value and outdoor fan will be turned off, indoor
fan reduces to low speed, 15 seconds later, the compressor is turned on and indoor fan
turn off for the de-ice operation, if To 15 or 10 minutes has elapsed, the de-ice
operation will be terminated. Then, the compressor is turned off. After 30 seconds
delay, 4 way valve and outdoor fan are turned on, 15 seconds later, compressor and
outdoor fan are turned on for return to normal operation, indoor fan is turned on for
return to normal operation also.
C
C
4WV
COMPRESSOR
30S 15S
MAX 10 MINS
HEAT MODE
If Tr < Ts, heat operation is activated. Compressor and outdoor fan are turned on.
If Tr Ts + 1 , heat operation is terminated. Compressor and outdoor fan are
turned off.
The range of Ts is 16 - 31 .
Indoor fan speed can be adjusted for low, medium, high and auto.
Compressor will delay for 3 minutes before it is turned on or off.
C
C
Compressor will delay for 3 minutes before it is turned on or off.
HEAT MODE
OPT -4
15C
C
DE-ICE
INDOOR FAN
OUTDOOR FAN
30S 15S
DRY MODE
If Tr 15 , dry operation is activated. Compressor and outdoor fan are
turned on interval.
C
If Tr 23 , Compressor and outdoor fan are operating in sequence as follows:
See A of fig1 If Tr<23 Compressor and outdoor fan are operating in sequence
as follows: see B of FIG1.
C
C
Tr 23 Tr 23<
C C
OUTDOOR FAN
INDOOR FAN
COMPRESSOR
8mins 3mins 4mins
1min
2mins 3mins
8mins
1min
2mins 4mins
1min 1min
Fig.1
AB
CONTROLS SPECIFICATION
55

TIMER
Timer off can only be set when the system is operating.
Timer on can only be set when the system is off.
The maximum set time is 12 hours.
Changing of on/off state will cancel timer mode.
SLEEP MODE
In cool mode, after sleep mode is set, Ts will increase 1 in first hours, will
increase 2 in second hours and will operation as the temperature
In heat mode, after sleep mode is set, Ts will decrease 2 in first hours, will
increase 2 in second hours and will operation as the temperature
Changing of operation mode will cancel sleep mode.
C
C
C
C
HEAT MODE
COOL MODE
Ts
Ts-1
Ts-2
Ts
Ts+1
Ts+2
1 HR 1 HR 1 HR
Time
C
CONTROLS SPECIFICATION
HIGH PRESSURE PROTECTION
If Ti > 50 , the outdoor fan is turned off. After that, if Ti < 47 , the system will
start again.( For 07.09 type)
C C
C
C
Compressor ON
Outdoor Fan OFF
Compressor ON
Outdoor Fan ON
Normal Operation zone
Compressor ON
Outdoor Fan OFF
(High pressure protection)
Compressor OFF
Outdoor Fan OFF
(High pressure protection)
Compressor ON
Outdoor Fan ON
Normal Operation zone
Temp Increasing
Temp decreasing
47 C(07.09)
50 (07.09)
C
63 C
If Ti > 63 , the compressor is turned off. After that, if Ti < 50 , the system will
start again.( for 07.09 type)
If Ti > 55 , the outdoor fan is turned off. After that, if Ti < 50 , the system will
start again.( For 12.18 type)
C C
50 C(12.18)
55 (12.18)
C
If Ti > 63 , the compressor is turned off. After that, if Ti < 55 , the system will
start again.( For12.18 type)
C C
66

MANUAL SWING (STEPPING MOTOR)
If the indoor fan is operating, the louver will swing or can be stopped at a preferred
location in any mode. The louver change location follow the order of :
If a command is received, the system will respond with a beep.
BUZZER
In cool mode, if Tr-Ts < 0 , indoor fan is run at low speed.
If 0 <Tr-Ts<2 , if indoor fan is running at low speed, there will be
no change in speed , if fan is running at medium speed ,there will be
no change in speed ,if indoor fan is run at high speed ,it will change
to medium speed.
If 2 <Tr-Ts<4 indoor fan keep original speed.
If Tr-Ts>4 indoor fan is run at high speed.
AUTO FAN SPEED
C C
C
C
0
Tr-Ts
HIGH SPEED
MEDIUM SPEED
LOW SPEED
C 2C 4C
C
C
In heat mode, if Tr-Ts < 1 , indoor fan is run at low speed.
If 1 <Tr-Ts<3 , if indoor fan is run at low speed, there will be no
change in speed , if fan run at medium speed ,there will be no change
in speed , if indoor fan is run at high speed ,will change to medium
Speed.
If 3 <Tr-Ts<5 indoor fan keep original speed.
If Tr-Ts>5 indoor fan is run at high speed.
C C
C
C
0
Tr-Ts
HIGH SPEED
MEDIUM SPEED
LOW SPEED
C 2C 4C
C
C
CONTROLS SPECIFICATION
77

MANUAL OPERATION BUTTON
3
3
OPERATION OF CONTROL PANEL ON INDOOR UNIT
Every press of this button will turn the system on or off.
SYSTEM LED LIGHT
When system is operating, the RUN light is on. When system is off, the light is off.
(Cool only type)
Every time the switch is pressed, it changes in sequence of
COOL STOP.
(Heat pump type)
Every time the switch is pressed, it changes in sequence of
COOL HEAT STOP.
MANUAL run operation procedure as the following:
In the first 30 minutes operation, the compressor don't stop ,indoor fan hold high speed. After
30 minutes, emergency run operation start.
Mode Setting temperature Deflector
Swing
Swing
HEAT
Fan speed
High
High
COOL 24
C
24
C
When sleep mode is operating, the SLEEP light is on. When sleep mode is off,
the light is off.
When timer is operating, the TIME light is on. When time is over, the light is off.
CONTROLS SPECIFICATION
88

DISASSEMBLY AND REASSEMBLY
Stop operation of the air conditioner and remove the power cord before repairing the unit
Indoor unit
No Parts Procedure Remark
1 Front grille 1.Stop the air conditioner
operation and block the
main power.
2.Contract the second finger
to the left ,and right handle
and pull to open the inlet
grille.
3.Draw away signal line. (only
for B,C,D,E).
6.Put hands at the two ruts
of the body, then pull the
front panel out .
5. Loosen two fixing screw of
front grille.
Model :DSC-097L DSC-127L
1.Loosen the srew of the
electrical box cover.
2Electrical
parts
4.Take the left and right filter
out.
99

5.Loosen the earth screw in
evaporator.
8.Separate the electrical box
from the indoor unit.
4.Take all the connector of the
PCB upper side out.
3.Loosen the screw of the
inside terminal board ,
separate the board.
6.Pull softly the indoor pipe
temperature sensor out from
the pipe casing.
No Parts Procedure Remark
2.Loosen the screw of the
inside terminal board ,
separate the board.
7.Push the hook outside to take
the electrical box out easily.
DISASSEMBLY AND REASSEMBLY
1010

DISASSEMBLY AND REASSEMBLY
3
3.Separate the evaporator
from the indoor unit.
Ass’y tray
drain
1.Push the left and right hooks
to make the ass’y pulled out.
4Evaporator
2.Separete the ass’y tray drain
from the body.
1.Push the left hook and
separate the left part out of
evaporator.
3.Separate the fan motor
from the fan.
No Parts Procedure Remark
2.Push the right hook and
separate the right part out of
evaporator.
5
Fan motor and
cross fan
1111

DISASSEMBLY AND REASSEMBLY
1 Cabinet 1.Turn off the unit and remove
the power cable.
2.Remove the upper cabinet,
the front cabinet and back
cabinet.
2.separate the propeller fan
from fan motor.
1.Remove the nut flange.
(Turn to the right to remove
as it a left turned screw )
1.Loosen the fixing screw of
the base-electrical control .
2 Fan motor &
propeller fan
3
3.Loosen the fixed screw of
fan motor,separate the fan
motor from outdoor unit
Outdoor unit
No Parts Procedure Remark
Ass'y control
out
2.separate the connector.
3.Separate the ass' y control
out from the outdoor unit.
Model :DSC-097L DSC-127L
1212

If problems can not be corrected after doing below items, please
stop the air conditioner, contact our air conditioner specially eng-
aged service centre nearest to you to get help.
Is there a fault ? Fault analysis
Air conditioner does
not operate at all.
Does power fail ?
Is plug out ?
Does power fuse or switch off ?
Is voltage higher than 253 V or lower than
207V?
Is time set suitable?
Remote controller is not
available and does not
display.
It is not running
after I/O button
is pressed.
Cooling and heating
efficiency is not good.
Air will not immediately
blow out at the start
of HEAT mode. It is processing information, air will only blow
out when sufficiently warm. Please wait.
This is a way to protect compressor as per
microprocessor instructions. Please wait 3
minutes.
Does temperature set suitably ?
Are filters dirty?
Are inlets and outlets of outdoor unit blocked?
Does sleep function start during daytime?
Does indoor fan speed set low ?
Are doors and windows closed ?
If disturbed abnormally or operation modes
changed too frequently, sometimes the rem-
ote controller would lose function. Please
plug out and plug in again, it may be ok.
If remote controller displays unclear or disp-
lays all symbols, please change batteries.
Troubleshooting
131

Indoor unit fan stops
for about 10
minutes during
heating.
It is defrosting of the outdoor unit coil.It should
complete this process in about 10 minutes at
most.( It freezes when outdoor temperature is
low and humidity is high. )
Issues cracking sounds The friction sounds caused by expansion and
contraction of front panel resulting from temp-
erature changes.
You can hear the
sound of running
water
It is the sound of expanding refrigerant inside
the air conditioner.
Sound of accumulated water dropping on the
heat-exchanger.
Melting sounds of frost on heat-exchanger.
Indoor unit issue
pooosh
sound and click
sound.
Click sound of fan or compressor when switc-
hing ON/OFF.
pooosh sound of refrigerant inside the air
conditioner.
There is odd odor
in the air that air
conditioner blow out.
Air conditioner recycles should have absorbed
odors from wall, carpet , furniture and cloth
closet out into the air.
Outdoor unit leaks
water.
During cooling, connecting pipe or pipe conn-
ector is cooled to form condensates.
During heating or defrosting , melting water
and water vapor will run out.
During heating, water on heat-exchanger will
drop.
Is there a fault ? Fault analysis
Troubleshooting
141

Indoor unit
Exploded Views and Parts List
Model :DSC-097L
1515
Model :DSC-127L

Indoor unit
Exploded Views and Parts List
1616
Model :DSC-097L
NO. Part Name Quantity Item Code
1Air filter 1KFR33G.1.1.2-8
2Front panel 1KFR33G.1.1.1-1(52D)
3Right big light assem bly 1KFR33G.1.1.2.1
4Right sm all ligh t board 1KFR33G.1.1.2-3
5Enclosure 1KFR33G.1.1.2-1
6Panel lock 2KFR33G.1.1.1-2
7Swing louver assembly 1KFR33G.1.3.5
8Drain hose 1SL07-01
9Stepping motor 1DQ04-03A
10 Left sm all ligh t bo ard 1KFR33G.1.1.2-2
11 Screw cover 2KFR33G.1.1.2-7
12 Drain cap 1SL10-01
13 Air outlet assem bly 1KFR33G.1.3
14 Evaporator 1KFR25G .2(G1-4)
15 Oil bearing 1XJ04-01
16 Indoor unit fan 1KFR33G.1.4.2
17 Back panel 1KF25G .1.1(G1-4)
18 Mounting plate 1KFR33G.4.14
19 Pip e fix ed clip 1KFR33G.1.2-9
21 Electrical control cover 1KFR33G.3.1-2
22 Transfo rm er 1DQ16-03C
23 Indoor unit terminal block 1DQ12-51
24 Connecting cable clip 1KFR33G.3.1-7
25 Lamp holder 1KFR33G.3.5-1
26 Electrical control box 1KFR33G.3.1-1
27 Power supply cord clip 1KFR33G.3.1-6
28 Room temperature sensor 1DQ13-60
29 Pipe temperature sensor 1DQ13-54
30 Indoor display assembly 1KFR33G.3.5
31 Signal receiver 1KFR33G.3.4
33 Power supply cord 1KFR25G.3.3.1(G1-2)
34 Left big light board 1KFR33G.1.1.2-4
35 Electrical holder 1KFR33G.3.1-3
20 Indoor fan motor 1DQ02-02C
32 Control PCB assembly 1AS09C R61FG2.2.2
Model :DSC-127L

Exploded Views and Parts List
Outdoor unit
1717
Model :DSC-097L Model :DSC-127L

Exploded Views and Parts List
1818
Outdoor unit Model :DSC-097L Model :DSC-127L
NO. Part Name Quantity Item Code
1Air outlet grille 1KFR20W.1.1-2
2Front panel 1KFR20W.1.1-1
3Left handle 1SL05-01
4Top panel 1KFR20W.1.2-1
5Fan screw nut M6 (left revolve) 1GB41-86
6Outdoor fan 1KFR20W.1.5.1
7Outdoor fan motor 1DQ01-09C
8Outdoor fan motor supporter 1KFR20W.1.5-1
9Condenser 1AU09CR61FG4.2.1A
10 Partition 1KFR20W.1.6-1
11 Electrical install board supporter 1KFR20W.3.2-2
12 Left back side board 1KFR20W.1.2-2
13 Back cover 1KFR20W.1.2-9
14 Right back side board 1KFR20W.1.1-3
15 Electrical install board 1KFR20W.3.2-1
16 Capacitor fixer 1BJ06-01
17 Outdoor unit terminal block 1DQ12-02
18 Power supply cord clip 1SL01-04
19 Compressor capacitor 1DQ11-52
20 Fan motor capacitor 1DQ11-11
21 Capillary 1AU09CR61FG4.2.1.2A
22 High pressure value 1DG03-12
23 Low pressure value 1DG03-02
24 Valve board 1KFR35W.1.3-3
25 Compressor screw 3LD06-01
26 Compressor 1AU09HR61FG4.2.4A
27 1AU09CR61FG4.2.1.4A
28 Back board 1KFR25W.1.3(G1-4)
29 Right handle 1SL05-02
30 1AU09CR61FG4.2.1.3A

Remote controller
112233445566
77881010
Quantity
1
1
1
1
1
1
1
1
1
1
4
Ass’y PCB remocon
Screw
case up
Conduct rubber
Inlay LCD
LCD screen
Spring battery
Name
Back body
Number
11
10
1
2
3
4
5
6
7
8
9
Back cover
Conduct rubber
991111
Spring battery
Exploded Views and Parts List
1919