Daewoo DSC-097L Installation and user guide

Manual de servicio

ACONDICIONADOR DE AIRE

DSC-097L DSC-127L

CONTENTS

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

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

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.

SERVICE AND MAINTENANCE

CONTROLS SPECIFICATION

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.

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.

AUTO CHANGEOVER MODE

Per Room

Temperature (RT)

Cooling only type

Mode PRE-SET Temperature PRE-SET Temperature

Mode

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

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.

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.

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.

HEAT MODE

OPT -4

15C

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.

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.

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

CONTROLS SPECIFICATION

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.

HEAT MODE

COOL MODE

Ts-1

Ts-2

Ts+1

Ts+2

1 HR 1 HR 1 HR

Time

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

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)

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)

If Ti > 63 , the compressor is turned off. After that, if Ti < 55 , the system will

start again.( For12.18 type)

C C

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

Tr-Ts

HIGH SPEED

MEDIUM SPEED

LOW SPEED

C 2C 4C

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

Tr-Ts

HIGH SPEED

MEDIUM SPEED

LOW SPEED

C 2C 4C

CONTROLS SPECIFICATION

MANUAL OPERATION BUTTON

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

HEAT

Fan speed

High

COOL 24

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

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.

This manual suits for next models

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