CS-C73KE / CU-C73KE CS-C93KE / CU-C93KE CS

ORDER NO. MAC9810034C2

Service Manual

Room Air Conditioners

CS-C73KE / CU-C73KE



Untitled-2 1

Contents

●

●

Features .......................................................... 1

Functions ................................................... 2 – 4

●

Product Specifications ............................. 5 – 10

●

Dimensions ............................................ 11 – 12

●

Refrigeration Cycle Diagram ......................... 13

●

Block Diagram ............................................... 14

●

Wiring Diagram .............................................. 15

●

Operation Details ................................... 16 – 23

●

Installation Information .......................... 24 – 25

●

2-way, 3-way Valves .............................. 26 – 32

●

Servicing Information ............................. 33 – 36

●

Troubleshooting Guide .......................... 37 – 38

●

Technical Data ....................................... 39 – 40

●

Exploded View ................................... 41, 43, 45

●

Replacement Parts List ..................... 42, 44, 46

●

Electronic Parts List ....................................... 47



1998 Matsushita Air-Conditioning Corp. Sdn. Bhd.

(183914D)

All rights reserved. Unauthorized copying and distribution is a violation of law.

6/28/00, 5:22 PM

CS-C73KE

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

PRECAUTION OF LOW TEMPERATURE

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigeration circuit.

Features

• High Efficiency

• Compact Design

• Comfort Enviroment

– 8 hours of sleep mode operation

– Air purifying filter with deodorizing function to reduce dust, smoke and odours.

• Auto Restart

– Auto restart at random operation after power failure

• Removable and Washable

Front Panel

• Quality Improvement

– Gas leakage protection

– Prevent compressor reverse cycle

– 2-stage OLP to protect compressor

• Service Improvement

– Easy fan motor replacement procedure

• Operation Improvement

– Economy mode to reduce electrical power consumption.

– Powerful mode to reaches the desired room temperature quickly.

• Long Installation Piping

– CS/CU–C73KE, CS/CU–C93KE, long piping up to 10 meter.

– CS/CU–C123KE, long piping up to 15 meter.

Untitled-1 1

– 1 –

6/29/00, 7:37 AM MAC9512086C2

CS-C73KE

Functions

Remote Control

Untitled-1

OFF / ON

I

Operation OFF / ON

MODE

Operation Mode Selection

• AUTO

• COOL

• DRY

• FAN

Automatic Operation Mode

Cooling Operation Mode

Soft Dry Operation Mode

Air Circulation Mode

FAN SPEED

Indoor Fan Speed Selection

• h j k Low Speed l

• h j k

Medium Speed lll

• h j k

High Speed lllll

• AUTOFAN Automatic Fan Speed

AIR SWING

Airflow Direction Control

• AUTO

• MANUAL

Automatic Airflow Direction

Control

Airflow Direction Manual Control

POWERFUL

Powerful Mode Operation OFF/ON

ECONOMY

Economy Mode Operation OFF/ON

TEMP.

Room Temperature Setting

ON-TIMER

OFF-TIMER

• Temperature Setting (16

°

C to 30

°

C)

• Automatic Operation

8 HI a

2

°

C higher than standard a a

9 Lo

Standard

2

°

C lower than standard

Timer Operation Selection

• 24-hour, OFF / ON Real Timer Setting.

TIMER

Time / Timer Setting

• Hours and minutes setting.

SET

CANCEL

Timer Operation Set / Cancel

• ON Timer and OFF Timer setting and cancellation.

CLOCK

Clock Setting

• Current time setting.

SLEEP

Sleep Mode Operation OFF / ON

2

– 2 –

6/29/00, 7:37 AM MAC9512086C2

CS-C73KE

Functions

Indoor Unit

Untitled-1

POWER I

Power Switch OFF / ON

AUTO

OFF / ON

Auto Operation Button

• Used when the remote control cannot be used.

Remote Control Signal Receiving

Sound

TEST RUN

OFF / ON

• It can be controlled by pressing Auto

Operation Button for 10 seconds.

Operation Test Running / Pump

Down Switch

• Used when test running or servicing.

Operation Indication Lamps (LED)

• POWER (Red)......

Lights up in operation, blinks in Automatic

Operation Mode judging

• SLEEP (Orange).....

Lights up in Sleep

Mode Operation

• TIMER (Orange).....

Lights up in Timer

Setting

• POWERFUL (Orange)..... Lights up in Powerful

Mode Operation

• ECONOMY (Green).....

Lights up in Economy

Mode Operation

Operation Mode

• Cooling, Soft Dry, Air Circulation and

Automatic Mode.

Powerful Operation

• Reaches the desired room temperature quickly.

Economy Operation

• To reduce electrical power consumption.

– 3 –

3

Random Auto Restart Control

• Operation is restarted randomly after power failure at previous setting mode.

Anti-Freezing Control

• Anti-Freezing control for indoor heat exchanger. (Cooling and Soft Dry)

Sleep Mode Auto Control

• Indoor Fan operates at low speed.

• Operation stops after 8 hours.

Indoor Fan Speed Control

• High, Medium and Low.

• Automatic Fan Speed Mode

– Cooling : Fan rotates at Hi and Me speed. Deodorizing control is available.

– Soft Dry : Fan rotates at SLo and Lo speed. Deodorizing control is available.

Airflow Direction Control

• Automatic air swing and manual adjusted by remote control for vertical airflow.

• Manually adjusted by hand for horizontal airflow.

Starting Current Control

Time Delay Safety Control

• Restarting is inhibited for appro. 3 minutes.

7 Minutes Time Save Control

• Cooling Operation only.

6/29/00, 7:37 AM MAC9512086C2

Functions

Outdoor Unit

CU-C73KE, CU-C93KE CU-C123KE

CS-C73KE

Compressor Reverse Rotation

Protection Control

• To protect compressor from reverse rotation when there is a instantaneous power failure.

Overload Protector

• 2-Stage OLP to protect the compressor.

Overload Protector will trip when

– Temperature of compressor increases to

120

°

C.

– High temperature or high current flows to compressor.

(Refer circuit diagram for OLP characteristic)

60 Secs. Forced Operation Control

• Once the compressor is activated, it does not stop within the first 60 secs. However, it stops immediately with remote control stop signal.

Outdoor Fan Operation Control

• Inner protector.

Untitled-1 4

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6/29/00, 7:37 AM MAC9512086C2

CS-C73KE

Product Specifications

Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Volume

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

Noise Level

Electrical

Data

Input

Running Current

Air Circulation

COP

Starting Current

Piping Connection Port

(Flare piping)

Pipe Size

(Flare piping)

Drain

Hose

Inner diameter

Length

Power Cord Length

Number of core-wire

Dimensions Height

Width

Depth

Net Weight

Compressor

Type

Motor Type

Rated Output

Type

Material

Motor Type

Input

Rated Output

Fan Low

Speed Medium

High

Unit kW

Btu/h s /h

Pint/h

Phase

V

Cycle

OUTLET

INTAKE m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) dB (A)

W

A

W/W

A inch inch inch inch mm m m inch (mm) inch (mm) inch (mm) lb (kg)

W

W

W rpm rpm rpm

CS-C73KE

SIDE VIEW

2.05 - 2.00

7,000 - 6,830

1.3

2.7

Single

230 - 220

50

CU-C73KE

TOP VIEW

5.5 (190)

6.3 (220)

7.0 (250)

–

–

–

–

22.2 (780)

High 46 - 45 High 33 - 32, Low 28 - 26

600 - 550

2.8 - 2.7

G ; Half Union 3/8"

L ; Half Union 1/4"

G (gas side) ; 3/8"

L (liquid side) ; 1/4"

12

0.7

2.0

3 (1.0 mm 2 )

10-31/32 (279)

31-15/32 (799)

7-15/32 (190)

20 (9.0)

–

–

–

Cross-flow Fan

AS + Glass Fiber 30%

Induction (4-poles)

29.0 - 27.0

10

835

945

1,055

3.42 - 3.64

12

G ; 3-way valve 3/8"

L ; 2-way valve 1/4"

G (gas side) ; 3/8"


–

–

–

–

18-29/32 (480)

30-23/32 (780)

9-21/32 (245)

57 (26)

Rotary (1 cylinder) rolling piston type

Induction (2-poles)

500

Propeller Fan

AES + Glass Fiber 16%

Induction (6-poles)

54.7 - 47.9

20

–

–

685

– 5 –

Untitled-1 5 6/21/00, 10:59 AM MAC9512086C2

CS-C73KE


Heat

Exchanger

Refrigeration Oil

Capacity Control

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W

×

H

×

L)

Refrigerant Control Device

Refrigerant (R-22)

Thermostat

Protection Device

Capillary Tube

Air Filter

Length

Flow Rate

Inner Diameter

Material

Style

Compressor Capacitor

Fan Motor Capacitor

(c.c) g (oz) s

Unit mm mm

/min mm

µ

F, VAC

µ

F, VAC

• Specifications are subject to change without notice for further improvement.

CS-C73KE

Evaporator

Copper

Aluminium

Slit Fin

CU-C73KE

Condenser

Copper

Aluminium

Louver Fin

614

×

(Plate fin configuration, forced draft)

2

×

14 1

×

18

21

294

–

×

25.4

17

856

×

457.2

×

22

Capillary Tube

–

SUNISO 4GDID or

ATMOS M60 (260)

– 645 (22.8)

– Electronic Control

–

–

2 Stage Overload Protector

450

–

–

7.9

1.2

P.P.

Honeycomb

Capillary Tube

–

1.5

µ

F, 400VAC

20

1.2

µ

µ

–

F, 370VAC

F, 400VAC

Untitled-1 6

– 6 –

6/21/00, 10:59 AM MAC9512086C2

CS-C73KE


Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Volume

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

Noise Level

Electrical

Data

Input

Running Current

Air Circulation

COP

Starting Current


(Flare piping)

Pipe Size

(Flare piping)

Drain

Hose

Inner diameter

Length

Power Cord Length

Number of core-wire

Dimensions Height

Width

Depth

Net Weight

Compressor

Type

Motor Type

Rated Output

Type

Material

Motor Type

Input

Rated Output

Fan Low

Speed Medium

High

Unit kW

Btu/h s /h

Pint/h

Phase

V

Cycle

OUTLET

INTAKE

CS-C93KE

SIDE VIEW

2.75 - 2.65

9,390 - 9,050

1.6

3.4

Single

230 - 220

50

CU-C93KE

TOP VIEW m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) dB (A)

W

A

W/W


W

W

W rpm rpm rpm

6.8 (240)

7.3 (260)

8.7 (310)

–

–

–

–

22.2 (780)

High 47 - 46 High 37 - 36, Low 30 - 28

800 - 770

3.5 - 3.6

G ; Half Union 3/8"

L ; Half Union 1/4"

G (gas side) ; 3/8"


12

0.7

2.0

3 (1.0 mm 2 )

10-31/32 (279)

31-15/32 (799)

7-15/32 (190)

20 (9.0)

–

–

–

Cross-flow Fan


Induction (4-poles)

35.5 - 33.0

15

925

995

1,185

3.44 - 3.44

16.4



G (gas side) ; 3/8"


–

–

–

–

18-29/32 (480)

30-23/32 (780)

9-21/32 (245)

64 (29.0)


Induction (2-poles)

700

Propeller Fan


Induction (6-poles)

54.7 - 47.9

20

–

–

685

– 7 –

Untitled-1 7 6/21/00, 10:59 AM MAC9512086C2

CS-C73KE


Heat

Exchanger

Refrigeration Oil

Capacity Control

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W

×

H

×

L)


Refrigerant (R-22)

Thermostat

Protection Device

Capillary Tube

Air Filter

Length

Flow Rate

Inner Diameter

Material

Style


Fan Motor Capacitor

(c.c) g (oz) s

Unit mm mm

/min mm

µ

F, VAC

µ

F, VAC


CS-C93KE

Evaporator

Copper

Aluminium

Slit Fin

CU-C93KE

Condenser

Copper

Aluminium

Louver Fin

614

×


2

×

14 1

×

18

21

294

–

×

25.4

17

856

×

457.2

×

22

Capillary Tube

–

SUNISO 4GDID or

ATMOS M60 (320)

– 760 (26.8)


–

–

2-Stage Overload Protector

1,040

–

–

9.0

1.5

P.P.

Honeycomb

Capillary Tube

–

1.5

µ

F, 400VAC

30

1.2

µ

µ

–

F, 370VAC

F, 400VAC

Untitled-1 8

– 8 –

6/21/00, 10:59 AM MAC9512086C2

CS-C73KE


Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Volume

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

Noise Level

Electrical

Data

Input

Running Current

Air Circulation

COP

Starting Current


(Flare piping)

Pipe Size

(Flare piping)

Drain

Hose

Inner diameter

Length

Power Cord Length

Number of core-wire

Dimensions Height

Width

Depth

Net Weight

Compressor

Type

Motor Type

Rated Output

Type

Material

Motor Type

Input

Rated Output

Fan Low

Speed Medium

High

Unit kW

Btu/h s /h

Pint/h

Phase

V

Cycle

OUTLET

INTAKE m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) dB (A)

W

A

W/W


W

W

W rpm rpm rpm

CS-C123KE

3.65 - 3.52

12,500 - 12,000

2.1

4.4

Single

230 - 220

50

SIDE VIEW

CU-C123KE

TOP VIEW

7.4 (260)

8.0 (280)

9.0 (290)

–

–

–

–

32.2 (1130)

High 49 - 48 High 39 - 39, Low 34 - 33

1,190 - 1,150

5.3 - 5.4

G ; Half Union 1/2"

L ; Half Union 1/4"

G (gas side) ; 1/2"


12

0.7

2.0

3 (1.0 mm 2 )

10-31/32 (279)

31-15/32 (799)

7-15/32 (190)

20 (9.0)

–

–

–

Cross-flow Fan


Induction (4-poles)

35.5 - 33.0

15

1,060

1,145

1,280

3.07 - 3.06

26



G (gas side) ; 1/2"


–

–

–

–

21-1/4 (540)

27-17/32 (699)

11-7/32 (285)

82 (37)


Induction (2-poles)

1,100

Propeller Fan


Induction (6-poles)

72.0 - 68.0

25

–

–

785

– 9 –

Untitled-1 9 6/21/00, 10:59 AM MAC9512086C2

CS-C73KE


Heat

Exchanger

Refrigeration Oil

Refrigerant (R-22)

Capacity Control

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W

×

H

×

L)


Thermostat

Protection Device

Capillary Tube

Air Filter

Length

Flow Rate

Inner Diameter

Material

Style


Fan Motor Capacitor

(c.c) g (oz) s

Unit mm mm

/min mm

µ

F, VAC

µ

F, VAC


CS-C123KE

Evaporator

Copper

Aluminium

Slit Fin

CU-C123KE

Condenser

Copper

Aluminium

Louver Fin

614

×


2

×

14 1

×

20

21

294

–

×

25.4

18

782.9

×

508

×

22

Capillary Tube

–

SUNISO 4GDID or

ATMOS M60 (410)

– 815 (28.8)


–

–

2-Stage Overload Protector

535

–

–

17.0

1.7

P.P.

Honeycomb

Capillary Tube

–

1.5

µ

F, 400VAC

30

1.5

µ

µ

–

F, 370VAC

F, 400VAC

Untitled-1 10

– 10 –

6/21/00, 10:59 AM MAC9512086C2

CS-C73KE

Dimensions

CS-C73KE / CS-C93KE / CS-C123KE

<Front View>

Air intake direction

Unit : mm

190

799

Air outlet direction

Left piping hole

<Side View>

58

60

Right piping hole

<Side View>

<Back View>

60

83

Remote control transmitter

65

18

GAS SIDE

LIQUID SIDE

DRAIN PORT

C

TEMP

POWERFUL

425 48

Untitled-1

Installation plate

Relative position between the indoor unit and the installation plate <Front View>

(40)

Centre notch

710

550

Slot (2 places)

Slot (2 places)

(49)

100

Arrow

350 100

Indoor unit external dimensions line

Centre

Arrow

Right piping hole

(60)

Left piping hole

(99)

16.5

– 11 –

11 6/21/00, 10:59 AM MAC9512086C2

CS-C73KE

Dimensions

CU-C73KE / CU-C93KE

780 54

Untitled-1

105 570 105

CU-C123KE

10 cm

Space necessary for installation

10 cm

100 cm

Anchor Bolt Pitch

323 x 500

100

699

500 99

69

(52)

7.5

285

245

280

312

2-way valve at

Liquid side

(High Pressure)

3-way valve at

Gas side

(Low Pressure)

12

– 12 –

6/21/00, 10:59 AM

(323)

347

2-Way Valve at Liquid side

(High Pressure)

3-Way Valve at Gas side

(Low Pressure)

MAC9512086C2

CS-C73KE

Refrigeration Cycle Diagram




INDOOR

INTAKE

AIR

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

HEAT

EXCHENGER

TEMP.

SENSOR

2-WAY

VALVE

3-WAY

VALVE

OUTDOOR

CAPILLARY

TUBE

HEAT EXCHANGER

(CONDENSER)

COMPRESSOR

Untitled-1 13

– 13 –

6/21/00, 10:59 AM MAC9512086C2

Block Diagram

CS-C73KE

SSR

CR3

CR2

CR1

CR4

Untitled-1 14

– 14 –

6/28/00, 4:11 PM MAC9512086C2

CS-C73KE

Wiring Diagram




WIRELESS

REMOTE

CONTROL

220-230V, 50Hz

POWER SUPPLY CORD

ELECTRONIC

CONTROLLER

(RECEIVER)

CN-RCV (W)

3 2 1

DISPLAY LAMP

CN-DISP(W)

6 5 4 3 2 1

2

1

4

3

BR

B

P

RY-PWR

L

THERMAL

FUSE

(113

°

C)

ELECTRONIC

CONTROLLER

AC (W)

W

REMOTE

CONTROL No.

B A

1 2 3 4 5 6

CN-DISP(W)

7

ELECTRONIC CONTROLLER

8 9

CN-C

(G)

B

R

CAPACITOR

1

3

FAN

MOTOR

CN-FM(G)

1 3 5 7

W

TRANSFORMER

R

R

R

1 3

R

CN-FUSE(B)

B

W

BL

Y/G

INDOOR UNIT

TERMINAL

OUTDOOR UNIT

TERMINAL

GRY

1 2

1 2

Y

THERMAL

FUSE

(102

°

C)

YELLOW

B

CAPACITOR

R

PUMP DOWN SW

(TEST RUN)

AUTO SW

FAN MOTOR

BLUE

BRAND MARK

RED

COMPRESSOR TERMINAL

REMARKS:

B

W

R

O

P

: BLUE

BR : BROWN

BL : BLACK

: WHITE

: RED

: ORANGE

: PINK

Y/G : YELLOW/

GREEN

BR

R

O

Y

P

AIR

SWING

MOTOR

SENSOR

(INTAKE AIR TEMP.)

SENSOR

(PIPE TEMP.)

Resistance of Indoor Fan Motor Windings

MODEL

CONNECTION

YELLOW-BLUE

YELLOW-BROWN

BROWN-ORANGE

ORANGE-WHITE

WHITE-RED

CS-C73KE CS-C93KE CS-C123KE

CWA92288 CWA92289 CWA92290

536.5

77.1

449.5

87.7

457.4

56.1

43.9

42.7

56.1

18.6

61.2

25.3

111.4

124.1

142.5

Resistance of Outdoor Fan Motor Windings

MODEL

CONNECTION

BLUE-YELLOW

YELLOW-RED

CU-C73KE

CWA95238

310.0

Ω

409.8

Ω

CU-C93KE

@

@

@

CU-C123KE

CWA95378

174.5

Ω

331.0

Ω

Resistance of Compressor Windings

MODEL CU-C73KE CU-C93KE CU-C123KE

CONNECTION 2RS110D5CA04 2PS146D5BA04 2KS224D5CA02

C-R

C-S

5.382

Ω

5.328

Ω

3.941

Ω

3.499

Ω

2.211

Ω

2.924

Ω

J9890634

CS/CU-C73KE/C93KE/C123KE

C73KE07.DWG

COMPRESSOR

Y

CAPACITOR

– 15 –

Untitled-1 15 6/28/00, 4:11 PM MAC9512086C2

Untitled-1

CS-C73KE

Operation Details

1) Cooling Mode Operation

Cooling in operation according to Remote Control setting.

Time Delay Safety Control (3 minutes)

• When the compressor is stopped by Power Switch or Remote Control, it restarts after 3 minutes when the Power

Switch or Remote Control is turned ON.

• When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3 minutes.

7 minutes Time Saved Control

• The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is below the compressor ON temperature.


• When the compressor, outdoor fan motor & indoor fan motor are simultaneously started, the indoor fan motor will operate 1.6 second later.


• If the temperature of the indoor heat exchanger falls continously below 2

°

C for 4 minutes or more, the compressor turns off to protect the indoor heat exchanger from freezing. The fan speed setting remains the same.

• Compressor recommences when the indoor heat exchanger temperature rises to 10

°

C (Recovery).

*

3 minutes waiting of Time Delay Safety Control is valid for Cooling Operation.

Indoor Heat

Exchanger

Temperature

(°C) 10

2

4 min

Recovery

Compressor OFF



• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and indoor heat exchanger is 2.5˚C or less for 2 minutes, compressor will stop and restart automatically.

(Time Delay Safety Control is valid).

• Compressor starts for

•

∆

T

>

5 minutes

<

2.5˚C for 2 minutes

➡

Compressor

OFF

➡ Compressor restarts

(3 minutes waiting)

∆

T = Intake air temperature – Indoor heat exchanger temperature

This is to protect reverse rotation of the compressor when there is a instantaneous power failure.

– 16 –

16 6/28/00, 4:11 PM MAC9512086C2

CS-C73KE


Automatic Fan Speed Mode

When Automatic Fan Speed is selected at Remote Control during cooling operation.

• Fan speed rotates in the range of Hi to Me.

• Deodorizing Control.

.

✕ .

✕

Indoor

Fan

SLo

40" 30"

SLo stop

20" 160"

SLo stop

40"

SLo

30"

Comp.

ON OFF ON

*

1 Fan Speed is Hi until the compressor stops (when the room temperature reaches

setting temperature).

*

2 Fan Speed is Me after the compressor restarts.

* SLo: Indoor Fan rotates at 4 second intervals at low speed.

Cooling Operation Time Diagram

ON

Intake

Temperature

1.5K

Set Temp.

OFF a b c d e f g h i j k l m n o p q r s t u v w x y z

Operation

Stop

Untitled-1

1’ 3’ 1’

Basic Time

Compressor

Indoor Fan

Outdoor Fan

Operation LED

<Description of operation> d – g : Time Delay Safety Control (waiting for 3 minutes) g – h : 60 sec. Forced Operation h – o : 7 min. Time Saved Control q – t : Anti Freezing Control

7’

– 17 –

17

10 ° C

Pipe temperature

2

°

C

1’ 4’

6/28/00, 4:11 PM MAC9512086C2

CS-C73KE


2) Soft Dry Mode Operation

• The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote

Control, and then Soft Dry operation will start.

• During Soft Dry operation, the Indoor Fan will operate and stop at 4-second intervals at low speed.

• The operation will be switched on and off for up to 10 minutes “ON” and 6 minutes “OFF”. Once Soft Dry operation is turned off, it stops for 6 minutes.

Time Delay Safety Control

• Once the compressor stops, it will not start for 3 minutes during Cooling operation.


• Same as Starting Current Control for Cooling Mode operation.


• Same as Anti-Freezing Control for Cooling Mode operation. (For Soft Dry region, 6 minutes waiting is valid during compressor stops.)



• Same as Compressor Reverse Rotation Protection Control for Cooling Mode Operation. (For Soft Dry region, 6 minutes waiting is valid during compressor stops.)

Automatic Fan Speed Mode

When Automatic Fan Speed is selected at Remote Control during Soft Dry Operation.

• Fan speed rotates at SLo and Lo speed.

• Deodorizing Control.

Indoor

Fan stop

40"

ON

SLo

COMP stop

6'

OFF

Lo

stop

SLo

40"

Untitled-1

*

SLo: Indoor Fan rotates at 4-second intervals at low speed.

– 18 –

18 6/28/00, 4:11 PM

ON

MAC9512086C2

CS-C73KE


Soft Dry Operation Time Diagram

Set Temp.

Intake Air

Temperature

Cooling ON

1.5

°

C

Cooling OFF

Soft Dry ON

1.0

°

C

Soft Dry OFF, ON a b c d e f g h i j k l m n o p q r s t u v

Indoor 10

°

C

Heat Exchanger

Temp.

2

°

C

6’ 1’ 6’ 1’ 6’ 1’

Basic Time

Compressor

Indoor Fan

Outdoor Fan

Operation LED

SLo SLo SLo SLo Lo SLo SLo SLo SLo SLo

<Description of operation> a – c, p~r : Cooling Operation c – p, r – v : Soft Dry Operation e – f : Soft Dry OFF j – l q – t

: 60 sec. Forced Operation

: Anti Freezing Control

Operation

Stop

4’ 6’ 1’ 6’

SLo SLo

Untitled-1 19

– 19 –

6/28/00, 4:11 PM MAC9512086C2

CS-C73KE


3) Air Circulation Mode Operation

• When the temperature near the ceiling reaches the setting temperature, Air Circulation Mode operation commences at low airflow volume. It stops when the temperature drops to 2

°

C below the setting temperature.

Air Circulation Mode Operation Time Diagram a b c d e

ON

Setting

Temp.

2

°

C

OFF

Untitled-1

Compressor

Indoor Fan

Outdoor Fan

Operation

Indication LED

Lo Lo

Operation

Stop

4) Automatic Mode Operation

Standard for Determining Operation Mode

↑

Intake Air

Temperature

23

°

C

Cooling Mode

Soft Dry Mode

Cooling Mode

Soft Dry Mode

Setting Temperature (Standard)

25

22

°

°

C

C

(a) Indoor fan operates at Lo fan speed for 20 seconds.

(b) After judging indoor air temperature, the operation mode is determined and operation continued at the mode determined.

(c) After the operation mode has been determined, the mode does not change. However, Soft Dry mode operation includes Cooling mode operation.

(d) Room temperature adjustment.

The following are added to the setting temperature specified as above.

Cooling Soft Dry

Higher

Standard

Lower

→

→

→

+2

±

0

–2

°

°

°

C

C

C

27

25

23

°

°

°

C

C

C

24

°

C

22

°

C

20

°

C

(e) The mode judging temperature and standard setting temperature can be increased by 2

°

C, by open the circuit of

J X 2 at indoor electronic controller.

↑

Intake Air

Temperature

25

°

C

Cooling

Soft Dry

Cooling Mode

Soft Dry Mode

Setting Temperature (Standard)

27

°

C

24

°

C

– 20 –

20 6/28/00, 4:11 PM MAC9512086C2

CS-C73KE


5) Sleep Mode Auto Operation

Cooling or Soft Dry Operation

When you press the SLEEP Mode, the following movement will start to avoid overcooling.

• When the room temperature reaches the setting temperature or after 1 hour of operation, sleep shift operation starts and the airflow volume will automatically change to low.

• The setting temperature will be risen by 0.5

°

C at the start of operation and by 0.5

°

C one hour later.

Approx. 0.5

°

C increase

TEMP.

Approx. 0.5

°

C increase

0 – 1 hour

Sleep Operation button is pressed.

1 hour

Approx. 8 hours after sleep shift operation starts, stops automatically

TIME

Sleep shift Operation starts.

• The operation will stop after 8 hours.

6) Powerful Mode Operation.

• Purpose of this operation is to obtain the setting temperature quickly.

• When the Powerful Mode is set, the set temperature will be automatically decreased 3

°

C against the present setting temperature.

This operation automatically will be running under Super High Fan speed.

• Vertical Airflow Direction:-

– In 'manual' setting, the vane will automatically shift down 10

°

lower than previous setting.

– In 'Auto' setting, the vane will automatically swing up and down. However the lower limit will be shifted 10

° downward.

• Powerful Mode will operate for 15 minutes only.

• Powerful Mode will stop if:-

– Powerful mode button is pressed again.

– Stopped by ON/OFF switch.

– Timer OFF activates.

– Economy mode button is pressed.

– Sleep mode is pressed.

– Operation mode is changed.

7) Economy Mode Operation.

• Purpose of this operation is to save or reduced electrical power consumption of the room air conditioner.

• When the Economy Mode is set, the set temperature will be automatically increased 0.5

°

C against the present setting temperature. This operation automatically will be running under Random Fan speed.

(Refer operation detail no. 9 )

• Vertical Airflow Direction:-

In 'manual' or 'Auto' setting, the vane will automatically change to Auto Air Swing.

• Economy Mode will stop if:-

– Economy mode button is pressed again.

– Stopped by ON/OFF switch.

– Timer–off activates.

– Powerful mode button is pressed.

– Auto or Manual air swing button is pressed.

– 21 –

Untitled-1 21 6/28/00, 4:11 PM MAC9512086C2

Untitled-1


– Fan Speed control button is pressed.

– Sleep mode button is pressed ON.

– Operation mode is changed.

8) Random Auto Restart Control

• If there is a power failure, operation will be automatically restarted after 3 to 5 1/2 minutes when the power is resumed.

It will start with previous operation mode and airflow direction.

• Restart time is decided randomly using 4 parameter:-

Intake air temperature, setting temperature, fan speed and Air Swing Blade position.

• Auto Restart Control is not available when Timer or Sleep Mode is set.

• This control can be omitted by open the circuit of J X 1. (Refer Circuit Diagram)

9) Indoor Fan Speed Control

• Auto Fan Speed Control

When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table.

• Manual Fan Speed Control

Basic fan speed adjustment (3 settings, from Lo to Hi) can be carried out by using the Fan Speed selection button.

SHi Hi t

Me t

Lo t

SLo Random Speed

Cooling

Mode

Manual Fan Speed

Auto Fan Speed

Soft Dry Mode

Air Circulation Mode

Normal

Powerful

Economy

Normal

Powerful

Economy

Normal

Powerful

Economy

Normal

Powerful

Economy

Can setting by Remote Control

Cannot setting by Remote Control t t t t t t t t t t t t t

* SLo: Indoor Fan rotates at 4-second intervals at Low speed.

* Lo, Lo¯ or Lo¯¯ Fan Speed is operated randomly during Random Fan Speed.

Random Fan Speed

Random

A B C

Fan Speed

LO LO¯ LO¯¯

Time

Fan Motor

10"

ON

4.5" 0.5" 4.5" 0.5" 4" 1" 4" 1"

ON OFF ON OFF ON OFF ON OFF

– 22 –

CS-C73KE

22 6/28/00, 4:11 PM MAC9512086C2

CS-C73KE


10) Airflow Direction Control

Horizontal

Airflow Direction Auto-Control

•

When set a Airflow Direction Auto-Control with remote control, the louver swings up and down as shown in the diagram.

•

The louver does not swing when the Indoor Fan stops during operation.

•

When stopped with remote control, the discharge vent is closed with the louver.

36

°

61

°

Upper limit

Swing up and down

Lower limit for

Cooling Mode and

Soft Dry Mode

Lower limit for Air Circulation Mode

*

The left and right airflow direction louvers can be adjusted manually.

*

1 There is no swinging while indoor fan is stopped during Cooling and Soft Dry operation.

*

2 In Air Circulation operation, when the intake air temperature reaches set temperature, the airflow direction is changed from upper limit to lower limit. When the intake air temperature falls to 2

°

C lower than set temperature, the airflow direction is changed from lower limit to upper limit.

Airflow Direction Manual Control

•

When the manual Airflow Direction Selection Button is pressed, the automatic airflow is released and the airflow direction louver move up and down in the range shown in the diagram.

The louver can be adjusted by pressing the button to the desired louver position.

•

When the remote control is used to stop the operation, the discharge vent is closed with airflow direction louver.

36

°

61

°

Horizontal

9

°

Upper limit /0

°

18

°

27

°

Lower limit for

Cooling Mode and

Soft Dry Mode /36

°

Lower limit for Air Circulation Mode

The louver can be adjusted with in a range of

“Manual Airflow Direction Selection Button” is pressed.

*

The left and right airflow direction louvers can be adjusted manually.

11) Delay ON Timer Control

• When the Delayed ON Timer is set by using the remote control, the unit will start operate slightly before the set time, so that the room will reach nearly to the set temperature by the desired time.

• For Cooling and Soft Dry mode, the operation will start 15 minutes before the set time.

• For Automatic mode, the indoor fan will operate at Lo speed for 20 seconds, 15 minutes before the set time to detect the intake air temperature to determine the operation mode. The operation indication lamp will blink at this time.

12) Remote Control Signal Receiving Sound

•

Peep sound (Long) will be heard when:-

– Stopping the Air Conditioner using ON/OFF switch.

– Stopping the Sleep Mode.

– Stopping the Powerful Mode.

– Stopping the Economy Mode.

•

Pep sound (Short) will be heard for others.

•

To switch off the peep sound press the "Auto Operation Button" continuously for 10 seconds or more.

Repeat the above if you want to switch ON the beep sound or switch OFF and ON back the power switch at the indoor unit.

* However, if the "Auto Operation Button" have been pressed the Automatic cooling operation will be activated.

If you do not require this operation, you may change it by using the remote control.

– 23 –

Untitled-1 23 6/28/00, 4:11 PM MAC9512086C2

Untitled-2

CS-C73KE

Installation Information

Attached accessories

No.

Accessories part

Installation plate

1

2

Installation plate fixing screw

3

Remote control

POWERFUL

OFF/ON

TEMP

4

Battery

5

Air purifying filter

Qty.

No.

6

Accessories part

Band

1

7

Vinyl tape

Vinyl tape

4

8

1

2

2

Qty.

2

3

1

Accessories: Flaring piping kit

CZ-3F5, 7AEN (CS/CU-C73KE, C93KE)

CZ-4F5, 7, 10AN (CS/CU-C123KE)

SELECT THE BEST LOCATION

INDOOR UNIT

•

There should not be any heat source or steam near the unit.

•

There should not be any obstacles blocking the air circulation.

•

A place where air circulation in the room is good.

•

A place where drainage can be easily done.

•

A place where noise prevention is taken into consideration.

•

Do not install the unit near the door way.

•

Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.

•

Indoor unit of this room air conditioner shall be installed on the wall in a height of at least 2.3 m.

OUTDOOR UNIT

•

If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.

•

There should not be any animal or plant which could be affected by hot air discharged.

•

Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles.

•

Do not place any obstacles which may cause a short circuit of the discharged air.

•

If piping length is over the rated length, additional refrigerant should be added as shown in the table.

MODEL

C73KE/C93KE

C123KE

Piping size

Gas Liquid

Common

Length

Max.

Elevation

(m)

Max.

Piping

Length

(m)

Additional

Refrigerant

(g/m)

3/8"

1/2"

1/4"

1/4"

7.5

7.5

5

5

10

15

10

10

– 24 –

6/28/00, 4:16 PM 24 MAC9512086C2

CS-C73KE

Installation Information

Indoor / Outdoor unit installation diagram

Length of power supply cord Piping direction about 1.1 m

< <

about 1.8 m

< <

(Front side)

Right

Right rear

Right bottom

Left

Left rear Left bottom

Attention not to bend up drain hose

Installation parts you must purchase (

*

)

Installation plate 1

Sleeve ( * )

Bushing-Sleeve (

*

)

Putty, (Gum Type Sealer) ( * )

Bend the pipe as closely on the wall as possible, but be careful that it doesn’t break.

5 cm or more

Air purifying filter 5

(Left and right are identical)

Insulation of piping connection

•

Carry out insallation after checking for gas leaks.

•

After securing with three of the vinyl tape 7 , wrap with vinyl tape 8 .

Vinyl tape

8

Vinyl tape 7

Vinyl tape (Wide) ( * )

•

Apply after carrying out a drainage test.

•

To carry out the drainage test, remove into the air filters and pour water into the heat exchanger.

Untitled-2

10 cm or more

10 cm or more

CU-C123KE

10 cm or more

Saddle ( * )

Connecting cable

(3-CORE WIRE/1.5 mm 2 )

Locally approved cable.

Additional drain hose ( * )

1/4" Liquid side piping ( * )

Gas side piping ( * )

1/2"

10 cm or more

10 cm or more

CU-C73KE

CU-C93KE

10 cm or more

Saddle ( * )

Connecting cable

(3-CORE WIRE/1.5 mm 2 )

Locally approved cable.

Additional drain hose ( * )

1/4" Liquid side piping ( * )

Gas side piping (

*

)

3/8"

Vinyl tape ( * )

(Narrow)

•

This illustration is for explanation purposes only.

The indoor unit will actually face a different way.

– 25 –

25 6/28/00, 4:16 PM MAC9512086C2

CS-C73KE

2-way

•

3-way Valve

2-way Valve (Liquid Side) 3-way Valve (Gas Side)

Untitled-3

Works

Shipping

Evacuation

Installation and

Re-installation

Operation

Pumping down

(Transferring)

Evacuation

(Servicing)

Gas charging

(Servicing)

Pressure check

(Servicing)

Gas releasing

(Servicing)

To piping connection

Flare nut

To outdoor unit

Hexagonal wrench (4 mm)

Open position

Closed position

Valve cap

To piping connection

Flare nut

Open position

Closed position

Pin

Service port cap

To outdoor unit

Service port

Shaft Position

Close

(With valve cap)

Closed

(Counter-Clockwise)

Open

(With valve cap)

Closed

(Clockwise)

Open

Open

Open

Open

Shaft Position

Closed

(With valve cap)

Closed

(Clockwise)

Open

(With valve cap)

Open

(Counter-clockwise)

Open

Service Port

Closed

(With cap)

Open

(Push-pin)

Closed

(With cap)

Open

(Connected manifold gauge)

Open

With vacuum pump

Open

Open

Open

Open

(With charging cylinder)

Open


Open


– 26 –

26 6/28/00, 4:19 PM MAC9512086C2

CS-C73KE

1 Evacuation of Installation

WHEN INSTALLING AN AIR CONDITIONER, BE

SURE TO EVACUATE THE AIR INSIDE THE INDOOR

UNIT AND PIPES in the following procedure.

If air remain in the indoor unit and refrigeration pipes, it will affect the compressor, reduce to cooling capacity, and could lead to a malfunction.

(Indoor unit)

(Liquid side)

2-way valve

Closed

(Outdoor unit)

(Gas side)

OPEN

3-way valve

Closed

Vacuum pump

Lo Hi

CLOSE

Procedure:

(1) Connect a charging hose with a push pin to the

Low side of a charging set and the service port of a 3-way valve.

●

Be sure to connect the end of the charging hose with the push pin to the service port.

(2) Connect the centre hose of the charging set to a vacuum pump.

(3) Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 MPa (0 cmHg) to –0.1 MPa (–76 cmHg). Then evacuate the air for approximately ten minutes.

(4) Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes.

BE SURE TO TAKE THIS PROCEDURE IN ORDER

TO AVOID GAS LEAKAGE.

(5) Disconnect the charging hose from the vacuum pump and from the service port of the

3-way valve.

(6) Tighten the service port cap at a torque of

18 N•m with a torque wrench.

(7) Remove the valve caps of the 2-way valve and the 3-way valve. Position both of the valves to

“open” using a hexagonal wrench (4 mm).

(8) Mount the valve caps onto the 2-way and 3-way valves.

●

Be sure to check for gas leakage.

Caution

If gauge needle does not move from 0 cmHg to

–76 cmHg in step (3) above, take the following measures:

If the leaks stop when the piping connections are tightened further, continue working from step (3).

If the leaks do not stop when the connections are retightened, repair the location of the leak.

– 27 –

Untitled-3 27 6/28/00, 4:19 PM MAC9512086C2

2 Pumping down

(Indoor unit)

(Liquid side)

2-way valve

Closed

(Outdoor unit)

(Gas side)

Refrigerant

Reclaiming

Equipment

CLOSE

Lo Hi

CLOSE

3-way valve

Open

CS-C73KE

Untitled-3

Procedure:

(1) Confirm that both the 2-way and 3-way valves are set to the opened position.

●

●

Remove the valve stem caps and confirm that the valve stems are in the opened position.

Be sure to use a hexagonal wrench to operate the valve stems.

(2) Operate the unit for 10 to 15 minutes.

(3) Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve.

●

Connect the charge hose with the push pin to the Gas service port.

(4) Air purging of the charge hose.

● Open the low-pressure valve on the charge set slightly to purge air from the charge hose.

(5) Set the 2-way valve to the closed position.

– 28 –

(6) Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 MPa

(0 kg/cm 2 G).

If the unit cannot be operated at the cooling condition (weather is rather cool), short the

Pumping Down pins on the Main Control P.C.B.

(Simply press the pumping down button if it is equipped.)

So that the unit can be operated.

(7) Immediately set the 3-way valve to the closed position.

● Do this quickly so that the gauge ends up indicating

0.1 MPa (1 kg/cm 2 G) to 0.3 MPa (3 kg/cm 2 G)

(8) Use refrigerant reclaiming equipment to collect refrigerant from indoor unit and pipes.

(9) Disconnect the charge set, and mount the 2-way and 3-way valve’s stem caps and the service port caps.

●

●

Use a torque wrench to tighten the service port cap to a torque of 18 N•m.


(10) Disconnect pipes from indoor unit and outdoor unit.

28 6/28/00, 4:19 PM MAC9512086C2

CS-C73KE

3 Evacuation of Re-installation

WHEN RE-INSTALLING AN AIR CONDITIONER, BE

SURE TO EVACUATE THE AIR INSIDE THE INDOOR

UNIT AND PIPES in the following procedure.

If air remain in the indoor unit and refrigeration pipes, it will affect the compressor, reduce to cooling capacity, and could lead to a malfunction.

(Indoor unit)

(Liquid side)

2-way valve

Closed

(Outdoor unit)

(Gas side)

OPEN

3-way valve

Closed

Vacuum pump Lo Hi

CLOSE

Procedure:

(1) Connect a charging hose with a push pin to the

Low side of a charging set and the service port of the 3-way valve.

●

Be sure to connect the end of the charging hose with the push pin to the service port.

(2) Connect the center hose of the charging set to a vacuum pump.

(3) Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 MPa (0 cmHg) to –0.1 MPa (–76 cmHg).

Then evacuate the air for approximately ten minutes.

(4) Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes.

BE SURE TO TAKE THIS PROCEDURE IN ORDER

TO AVOID GAS LEAKAGE.

(5) Disconnect the charging hose from the vacuum pump .

(6) Charge the pipes and indoor unit with gas refrigerant from 3-way valve service port, and then discharge the refrigerant until low side (gas side) gauge needle indicates 0.3 MPa (3 kg/cm 2 )

(7) Tighten the service port cap at a torque of 18N•m with a torque wrench.

(8) Remove the valve caps of the 2-way valve and the 3-way valve. Position both of the valves to

"open" using a hexagonal wrench (4 mm).

(9) Mount valve caps onto the 2-way and 3-way valves.

●

●

●

BE SURE TO USE REFRIGERANT RECLAIM-

ING EQUIPMENT WHILE DISCHARGING THE

REFRIGERANT.

Purge the air from charge set’s centre hose.


Caution

If gauge needle does not move from 0 MPa

(0 cmHg) to –0.1 MPa (–76 cmHg) in step (3) above, take the following measures:

If the leaks stop when the piping connections are tightened further, continue working from step (3).

If the leaks do not stop when the connections are retightened, repair the location of the leak.

– 29 –

Untitled-3 29 6/28/00, 4:19 PM MAC9512086C2

4 Balance refrigerant of the 2-way, 3-way valves

(Lack of refrigerant in the refrigeration cycle)

(Indoor unit)

(Liquid side)

2-way valve

Open

(Outdoor unit)

(Gas side)

3-way valve

Open

Refrigerant

Reclaiming

Equipment

OPEN

Lo Hi

CLOSE

CS-C73KE

Untitled-3

Procedure:

(1) Confirm that both the 2-way and 3-way valves are set to the open position.

(2) Connect the charge set to the 3-way valve’s service port.

●

●

Leave the valve on the charge set closed.

Connect the charge hose with the push-pin to the service port.

(3) Connect the charge set’s centre hose to refrigerant reclaiming equipment.

● Purge the air from charge hose.

(4) Open the valve (Low side) on the charge set and discharge the refrigerant until the gauge indicates 0.05 MPa (0.5 kg/cm 2 G) to 0.1 MPa

(1 kg/cm 2 G).

●

●

If there is no air in the refrigeration cycle (the pressure when the air conditioner is not running is higher than

0.1 MPa (1 kg/cm 2 G), discharge the refrigerant until the gauge indicates 0.05 MPa (0.5 kg/cm 2 G) to 0.1

MPa (1 kg/cm 2 G). If this is the case, it will not be necessary to apply a evacuation.

Discharge the refrigerant gradually; if it is discharged too suddenly, the refrigeration oil will also be discharged.

(5) Turn on refrigerant reclaiming equipment .

– 30 –

30 6/28/00, 4:19 PM MAC9512086C2

CS-C73KE

5 Evacuation

(No refrigerant in the refrigeration cycle)

(Indoor unit)

(Liquid side)

2-way valve

Open

(Outdoor unit)

(Gas side)

Vacuum pump

OPEN

Lo Hi

CLOSE

3-way valve

Open

Procedure:

(1) Connect the vacuum pump to the charge set’s centre hose.

(2) Evacuation for approximately one hour.

●

Confirm that the gauge needle has moved toward

–0.1 MPa (–76 cmHg) [vacuum of 4 mmHg or less.]

(3) Close the valve (Low side ) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump).

(4) Disconnect the charge hose from the vacuum pump.

● Vacuum pump oil

If the vacuum pump oil becomes dirty or depleted, replenish as needed.

Untitled-3 31

– 31 –

6/28/00, 4:19 PM MAC9512086C2

6 Gas charging

(After Evacuation)

(Indoor unit)

(Liquid side)

2-way valve

Open

(Outdoor unit)

(Gas side)

Charging cylinder

Check valve

OPEN

Lo Hi

CLOSE

3-way valve

Open

CS-C73KE

Untitled-3

Procedure:

(1) Connect the charge hose to the charging cylinder.

● Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.

(2) Purge the air from the charge hose.

● Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant).

(3) Open the valve (Low side) on the charge set and charge the system with liquid refrigerant.

● If the system cannot be charged with the specified amount of refrigerant, it can be charged with a little at a time (approximately 150 g each time) while operating the air conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1 minute and then repeat the procedure. (pumping down-pin)

This is different from previous procedures. Because you are charging with liquid refrigerant from the gas side, absolutely do not attempt to charge with large amount of liquid refrigerant while operating the air conditioner.

(4) Immediately disconnect the charge hose from the

3-way valve’s service port.

- Stopping partway will allow the refrigerant to be discharged.

- If the system has been charged with liquid refrigerant while operating the air conditioner, turn off the air conditioner before disconnecting the hose.

(5) Mount the valve stem caps and the service port cap.

● Use torque wrench to tighten the service port cap to a torque of 18 N•m.

● Be sure to check for gas leakage.

32

– 32 –

6/28/00, 4:19 PM MAC9512086C2

CS-C73KE

Servicing Information

●

Inspection points for the Indoor Electronic Controller

1. The Electronic Controller, a signal Receiver and an

Indicator (Fig. 2) can be seen by the below steps:

– Remove the 2 caps and 2 screws at the bottom of the front grille. (Fig. 1)

– Remove the front grille by releasing the 2 hooks at the top of the front grille. (Fig. 1)

– Remove the control board cover by releasing the 2 tabs at left, 1 tab on top and 2 more tabs at right side of the control board cover. (Fig. 1)

Release hooks

Tabs Tab

Tabs

➞

Remove 2 caps and 2 screws

➞

Control Board

Cover

Fig. 1

Electronic Controller

2. To remove the Electronic Controller, release the hook that holding the electronic controller. (Fig. 2)

Intake Air

Sensor

●

Indoor Fan Motor removal procedure :-

1. Remove the control board by:-

– Releasing CN-C (GRN) connector

– Releasing CN-FM (GRN) connector

– Releasing CN-STM connector

– Remove the earth wire screw

– Release the intake air sensor

– Release the piping sensor

} (Fig. 2)

Earth Wire

Screw

Piping

Sensor

Signal

Receiver

Indicator

CN-C (GRN)

Hook

CN-FM

(GRN)

CN-STM

Fig. 2

Untitled-4

– Remove the right and left screws.(Fig. 3)

– Then remove the control board by pressing down the hook at the left and press up the right hook. (Fig. 3)

Left hook

(press down)

Screw

(remove)

➞

Screw

(remove) right hook

(press up)

Fig. 3

– 33 –

33 6/28/00, 4:22 PM MAC9512086C2

CS-C73KE


2. Remove the Fan Motor by :-

– Release the fan motor leadwire by pressing the hook at the center of the connector. (Fig. 4)

– Then remove the particular piece that holding the fan motor by pressing the tab. (Fig. 4)

– Remove the discharge grille and then the drain hose. (Fig. 4)

Discharge grille

Fan motor connector

Particular piece

Tab

Fan motor

Fig. 4

– Finally remove the fan motor by removing the screw. (Fig. 5)

– REMINDER - To reinstall the fan motor, adjust the connector of the fan motor as Figure 5.

Untitled-4 34

To install back the

Fan motor,

Please adjust the connector location.

Screw

Fan motor

Fig. 5

– 34 –

6/28/00, 4:22 PM MAC9512086C2

CS-C73KE


●

Cross Flow Fan Removal Procedure.

1. Remove the control board and the fan motor by referring to the "Indoor Fan Motor Removal

Procedure".

2. Remove the evaporator screw (Fig. 6)

Evaporator screw

Fig. 6

Untitled-4

3. Press the particular piece to loosen the evaporator.

(Fig. 7)

4. Remove the bearing. (Fig. 7)

5. Push up the evaporator and take out the cross flow fan. (Fig. 7)

Bearing

35 cross flow fan

Evaporator

Push up evaporator

Press the particular piece

Fig. 7

– 35 –

6/28/00, 4:22 PM MAC9512086C2

CS-C73KE


•

Remote Control Reset

When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work.

If this happens, remove the back cover of the remote control and you will find a resetting terminal, and by shorting it with a minus screwdriver, it will return to normal.

Reset terminal

RESET

•

Changing the wireless remote control transmission code

When two indoor units are installed in the same room, in order to prevent operating errors caused by using two remote controls, set up the remote control [B

↔

A] switch (SW1).

The unit is set to A when it is shipped.

Remote Control

Remote Controller

B A

B A

Switch

1

2

3

4

●

By adding a jumper wire to the remote control side and a carbon resistor (1/4 W, 10 k

Ω

) to the indoor printed circuit board, it is possible to select from 4 types of transmission codes including the condition at time of delivery condition (1).

Remote control

Switch SW B

↔

A J – B

A

B

A

B

Jumper wire

Jumper wire

Indoor printed circuit board

Switch SW1 RX

A

B

A

B

10k

10k

Ω

Ω

Note

At product delivery

Untitled-4 36

– 36 –

6/28/00, 4:22 PM MAC9512086C2

CS-C73KE

Troubleshooting Guide

Refrigeration cycle system

In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.

The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table to the right.

Normal Pressure and Outlet Air Temperature (Standard)

Gas pressure

MPa

(kg/cm 2 G)

Outlet air temperature

(°C)

Cooling mode 0.4 ~ 0.6 (4 ~ 6)

★ Condition: Indoor fan speed; High

Outdoor temperature 35°C

12 ~ 16

Difference in the intake and outlet air temperatures More than 8°C

(15 minutes after an operation is started.)

Normal

●

Measuring the air temperature difference

Less than 8°C at the cooling mode

Value of electric current during operation

Higher than specified

Dusty condenser preventing heat radiation

Excessive amount of refrigerant

●

Measuring electric current during operation

Lower than specified

Gas side pressure

Cooling Mode High

Low

Low

Inefficient compressor

Insufficient refrigerant

Clogged strainer or capillary tube

●

Measuring gas side pressure

Untitled-8 37

– 37 –

6/28/00, 5:19 PM MAC9512086C2

CS-C73KE

Troubleshooting Guide

1. Relationship between the condition of the air conditioner and pressure and electric current

Condition of the air conditioner Low Pressure

Cooling Mode

High Pressure Electric current during operation

Insufficient refrigerant

(gas leakage)

Clogged capillary tube or Strainer

V

V

V

V

V

V

Short circuit in the indoor unit

V V V

Heat radiation deficiency of the outdoor unit

Inefficient compression

B

B

B

V

B

V

●

Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.

2. Diagnosis methods of a malfunction of a compressor

Nature of fault

Insufficient compressing of a compressor

Locked compressor

Symptom

●

Electric current during operation becomes approximately 20% lower than the normal value.

●

The discharge tube of the compressor becomes abnormally hot (normally 70 to 90°C).

●

The difference between high pressure and low pressure becomes almost zero.

●

Electric current reaches a high level abnormally, and the value exceeds the limit of an ammeter. In some cases, a breaker turns off.

●

The compressor has a humming sound.

Untitled-8 38

– 38 –

6/28/00, 5:19 PM MAC9512086C2

CS-C73KE

Technical Data

L

Thermostat characteristics


• Cooling

(

°

C)

34

32

30

28

26

24

/ COMP. ON

/ COMP. OFF = Set Temperature

/ Diff. 1.5

° C

22

20

18

16

16 18 20 22 24 26 28

Thermostat Setting (Remote Control)

30 (

°

C)

• Soft Dry

(

°

C)

34

32

30

28

26

24

22

20

/ Cooling ON

/ Cooling OFF = Set Temperature,

/ Soft Dry OFF, Soft Dry ON

/ Diff. 1.5

°

C

/ Diff. 1.0

°

C

18

16

16 18 20 22 24 26 28 30

Thermostat Setting (Remote Control)

L

Operation characteristics


• Cooling Characteristic • Piping Length Characteristic

230V

220V

230V

220V

16

15

14

13

12

16

15

14

13

12

2.2

2.0

1.8

2.2

2.0

1.8

3.5

3.0

2.5

2.0

30 32 34 36 38 40 42 44

OUTDOOR ROOM TEMPERATURE (

°

C)

[Condition] Room temperature: 27/19

°

C

Cooling operation: At High fan

Piping length: 7.5 m

0.65

0.60

0.55

3.5

3.0

2.5

2.0

5

PIPING LENGTH (m)


°

C

Outdoor temperature: 35/34

°

C

Cooling opeartion: At High fan

10

0.65

0.60

0.55

– 39 –

Untitled-8 39 6/28/00, 5:19 PM MAC9512086C2

CS-C73KE

Technical Data

L

Operation characteristics


• Cooling Characteristic

230V

220V

• Piping Length Characteristic

230V

220V

Untitled-8

3.0

2.8

2.6

2.4

16

15

14

13

4.0

3.5

3.0

2.5

30 32 34 36 38 40 42 44


°

C)


°

C




• Cooling Characteristic

230V

220V

15

14

13

12

0.60

0.55

0.50

16

15

14

13

3.0

2.8

2.6

2.4

4.0

3.5

3.0

2.5

0 5

PIPING LENGTH (m)


°

C


°

C


10

0.60

0.55

0.50

• Piping Length Characteristic

230V

220V

15

14

13

12

3.8

3.6

3.4

3.2

6.0

5.5

5.0

4.5

30 32 34 36 38 40 42 44


°

C)


°

C



0.55

0.50

0.45

3.8

3.6

3.4

3.2

– 40 –

6.0

5.5

5.0

4.5

0 5 10

PIPING LENGTH (m)


°

C


°

C


15

0.50

0.45

0.40

40 6/28/00, 5:19 PM MAC9512086C2

CS-C73KE

Exploded View


6

1

4 5

6

5

7

#

"

8

2

7

3

4

\

-

3

9

!

[

:

/

;

>

.

=

<

@

$

%

& (

,

&

(

%

)

~

+

2

{

1

?

}

V

V

}

_

1

8

2

]

^

9

9

|

(Note) : The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

– 41 –

0

CS-C73KE

Untitled-8 41 6/28/00, 5:20 PM MAC9512086C2

CS-C73KE

Untitled-8

Replacement Parts List

<Model: CS-C73KE / CS-C93KE / CS-C123KE>

29

30

31

32

33

34

23

24

25

26

27

28

40

41

42

43

35

36

37

38

39

44

NO.

1

2

3

4

7

8

5

6

9

10

11

12

13

18

19

20

21

22

14

15

16

17

44a

44b

45

46

47

48

49

DESCRIPTION & NAME

CHASSY COMPLETE

PARTICULAR PIECE

FAN MOTOR

LEAD WIRE - FAN MOTOR

CROSS FLOW FAN

BEARING

SCREW - CROSS FLOW FAN

EVAPORATOR & TUBE ASS'Y COMPLETE

INTAKE AIR SENSOR HOLDER

ANTI VIBRATION BUSHING

FLARE NUT (1/4")

FLARE NUT (1/2") OR (3/8")

DISCHARGE GRILLE COMPLETE

VERTICAL VANE WITH TAB

VERTICAL VANE

CONNECTING BAR

AIR SWING MOTOR

LEAD WIRE - AIR SWING MOTOR

CAP FOR DRAIN TRAY

HORIZONTAL VANE

CONTROL BOARD

POWER SUPPLY CORD

SLIDE SWITCH

ELECTRONIC CONTROLLER

RECEIVER

INDICATOR COMPLETE

LEAD WIRE - INDICATOR

TERMINAL BOARD

INDICATOR HOLDER

TEMPERATURE SENSOR

CONTROL BOARD FRONT COVER

CONTROL BOARD TOP COVER

REMOTE CONTROL COMPLETE

REMOTE CONTROL HOLDER

FRONT GRILLE COMPLETE

INTAKE GRILLE COMPLETE

DECORATION BASE COMPLETE

TAB

AIR FILTER

GRILLE DOOR

SCREW FOR FRONT GRILLE

CAP FOR FRONT GRILLE

DRAIN HOSE

OPERATING INSTRUCTIONS

(ENG/SPA/GER/FRA/NED/ITA)

OPERATING INSTRUCTIONS (POR/GRK)

OPERATING INSTRUCTIONS (RUSSIAN)

INSTALLATION INSTRUCTIONS

INSTALLATION PLATE

BAG COMPLETE - INSTALLATION SCREW

AIR PURIFYING FILTER COMPLETE

AIR PURIFYING FILTER

1

1

1

1

1

1

2

CWF561591A

CWF561591B

CWF61668

CWH36157

CWH82C144

CWD00C111

CWD00220

(Note)

●

All parts are supplied from MACC, Malaysia (Vendor Code: 086).

● t marked parts are recommended to be kept in stock.

CWA741376

CWA67C2105

CWA28C577

CWD931018

CWA50C608

CWH13456

CWH13457

CWA75C724

CWH36161

CWE11C978

CWE22C333

CWE35C023

CWD931020

CWD00240

CWE14236

XTN4+16C

CWH52267

CWH5880580

CWF561591

CS-C73KE

CWD50C338

CWD931019

CWA92288

CWA67C2097

CWH02C060

CWH64K007

CWH4580304

CWB30C249

CWH32142

–

CWH6002140 (1/4")

CWT25005 (3/8")

CWE20C610

CWE24458

CWE24457

CWE26194

CWA98260

CWA67C2106

CWH52C003

CWE24462

CWH10965

CWA20C751

CWA04088

CWA741351

CWA74919

1

2

2

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

10

2

1

1

1

1

1

1

1

1

1

1

1

QTY

1

1

1

1

1

CS-C93KE

@

@

CWA92289

@

@

@

@

CWB30C278

@

CWH50211

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

– 42 –

42 6/28/00, 5:20 PM

CS-C123KE

@

@

CWA92290

@

@

@

@

CWB30C260

@

@

@

@

@

CWA28C578

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

@

CWT25007 (1/2")

CWE20C624

@

@

@

@

@

@

@

@

@

@

@

@

@

@

CWF61684

@

@

@

@

MAC9512086C2

CS-C73KE

Exploded View

CU-C73KE / CU-C93KE

[

7

6

?

5

4

3

2

(

:

/

>

@

-

"

;

.

<

=

& %

,

~

)

+

\

$

1

#

!

9

8



– 43 –

Untitled-8 43 6/28/00, 5:20 PM MAC9512086C2


<Model: CU-C73KE / CU-C93KE

26

27

28

29

30

31

32

NO.

1

8

9

6

7

4

5

2

3

10

11

16

17

18

19

12

13

14

15

20

21

22

23

CHASSY ASS’Y


FAN MOTOR BRACKET

SCREW – FAN MOTOR BRACKET

FAN MOTOR

SCREW – FAN MOTOR MOUNT

PROPELLER FAN

NUT – PROPELLER FAN

COMPRESSOR

ANTI – VIBRATION BUSHING

NUT – COMPRESSOR MOUNT

CONDENSER

HOLDER COUPLING ASS‘Y

3-WAY VALVE

2-WAY VALVE

TUBE ASS’Y (STRAINER CAPILLARY)

SOUND PROOF BOARD

OVERLOAD PROTECTOR

HOLDER – O.L.P.

TERMINAL COVER

NUT – TERMINAL COVER

CONTROL BOARD

TERMINAL BOARD ASS’Y

CAPACITOR – COMPRESSOR

24

25

HOLDER CAPACITOR

CAPACITOR – FAN MOTOR

FUSE HOLDER

FUSE

CABINET ASS’Y

CABINET FRONT PLATE

CONTROL BOARD COVER

HANDLE

STRAINER

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

3

1

1

3

1

Q’TY

1

1

4

1

1

1

CWH10881

CWA28K217

CWA31645

(20

µ

F, 370 V)

CWH30057

CWA31342

(1.2

µ

F, 400 V)

XCSCW011

XBA2C31TR0

CWE00K330A

CWE06C117A

CWH13302

CWE16037C

CWB11025

CU-C73KE

CWD50K525B

CWD54113

CWH4580399

CWA95238

CWH55027

CWH00K040

CWH56032

2RS110D5CA04

CWH50077

CWH56000

CWB32C323

CWH35K017A

CWB01438

CWB02277

CWT01C589

CWH15266

CWA67C2069

CWH7041200

CWH17006

CWH7080300

CU-C93KE

@

@

@

@

@

@

@

2PS146D5BA04

@

@

CWB32C119

@

@

@

CWT01C590

@

CWA67C2070

@

@

@

@

@

CWA31647

(30

µ

F, 370 V)

@

@

(Note)

●



@

@

@

@

@

@

@

REMARKS t t t t t t t t t

CS-C73KE

Untitled-8 44

– 44 –

6/28/00, 5:20 PM MAC9512086C2

CS-C73KE

Exploded View

CU-C123KE

^

\

|

]

5

4

@ ?

3

)

1

(

<

[

.

;

:

=

/

>

2

{

_

9

%

-

+

~

,

&

6

8

"

7

!

#

$



– 45 –

Untitled-8 45 6/28/00, 5:20 PM MAC9512086C2

CS-C73KE

Untitled-8


<Model: CU-C123KE

16

17

18

19

12

13

14

15

20

21

22

23

24

NO.

1

8

9

6

7

4

5

2

3

10

11

CHASSY ASS’Y


FAN MOTOR BRACKET

SCREW – FAN MOTOR BRACKET

FAN MOTOR

SCREW – FAN MOTOR MOUNT

COMPRESSOR

ANTI – VIBRATION BUSHING

NUT – COMPRESSOR MOUNT

CONDENSER

TUBE ASS'Y (STRAINER CAPILLARY)

HOLDER COUPLING ASS'Y

2-WAY VALVE

3-WAY VALVE

SOUND PROOF BOARD

SOUND PROOF MATERIAL

WIRE NET

AIR GUIDER PROPELLER FAN

OVERLOAD PROTECTOR

HOLDER – O.L.P.

TERMINAL COVER

NUT – TERMINAL COVER

CONTROL BOARD

TERMINAL BOARD ASS'Y

CAPACITOR – COMPRESSOR

25

26

HOLDER CAPACITOR

CAPACITOR – FAN MOTOR

1

1

1

1

1

1

1

1

1

1

1

1

1

CU-C123KE

CWD50K658A

CWD54254

CWH55413

CWA95378

CWH55252

2KS224D5CA02

CWH50055

CWH4582065

CWB32C334

CWT01C647

CWH35K062

CWB02514

CWB01480

CWH15288

CWG30911

CWD04197A

CWD31138

CWA67C2166

CWH7041200

CWH17006

CWH7080300

CWH10972

CWA28K217

CWA31647

(30

µ

F, 370 V)

CWH30057

CWA31227

(1.5

µ

F, 400 V)

XCSCW011

XBA2C31TR0

CWH00K087

CWH56053

CWE04217A

CWE04220A

CWE06K104A

CWE16037C

CWH13461

CWD91258

CWE03111A

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

3

4

1

Q’TY

1

1

6

1

34

35

36

31

32

33

37

27

28

29

30

FUSE HOLDER

FUSE

PROPELLER FAN ASS'Y

NUT – PROPELLER FAN

CABINET SIDE PLATE (RIGHT)

CABINET SIDE PLATE (LEFT)

CABINET FRONT PLATE

HANDLE

CONTROL BOARD COVER

PLATE FOR C.B. COVER

CABINET TOP PLATE

(Note)

●



REMARKS t t t t t t t t

46

– 46 –

6/28/00, 5:20 PM MAC9512086C2

CS-C73KE

Electronic Parts List

<Model: CWA741351

SYMBOL

C–FM

DB1

FUSE

IC4

IC5

RY–Hi, RY–M, RY–SHi

RY–PWR

SSR 1

SW2, SW3

T1

TEMP FUSE

ZNR1, ZNR2


SH CAPACITOR

DIODE

FUSE

INTEGRATED CIRCUIT

INTEGRATED CIRCUIT

ELECTRO MAGNETIC RELAY

ELECTRO MAGNETIC RELAY

TYRISTOR

PUSH SWITCH

TRANSFORMER

FUSE

DIODE

(Note)

●


A31698

A54CS1VB20E

XBA2C31TR0

A52C040

A52C094

A00160

A00106

A56W2DEH1–5

A01059

A40366

A16C204

ERZVEAV511

PART NO.

Untitled-8 47

– 47 –

6/28/00, 5:20 PM

MACC Printed in Malaysia

P990103000CT

MAC9512086C2

ECD

A

F

E

B

G

D

C

ELECTRONIC CIRCUIT DIAGRAM

•


•


•


MAIN

RECEIVER

PH302C

8 IN+

330

0.01

µ

7 IN-

0.01

µ

6 CO

5 GND

VCC1 1

OUT 2

VCC2 3

FO 4

137k

6.3V

47

µ

1

2

3

(MX-3)

CN-RCV1

R17

1k

R16

5.1k

C19

0.01

µ

TEST

R9

10k

R8

1k

CS-C73K/C93K/C1233K CS-C73K/C93K/C123K

RY-PWR DRIVE

RY-PWR

D1

ERA15-01 e

Q4 c

2SD148-4X b

R22

2.2k

R21

6.2k

INDICATOR

GRN

ECONOMY

POWERFUL

ORG

A54LNK2172B

A54LNK3171B

TIMER

ORG

ORG

SLEEP

OFF/ON

RED

(PH-6)

CN-DISP

6

5

4

3

2

1

1

2

3

4

5

6

7

8

9

(MX-9)

CN-DISP

REMOTE CONTROL NO.

SW1 RX1

1

2

OFF

ON

3

4

OFF

ON

SHORT

SHORT

RX1

SW1

R31

26.1k

R32

102k

JX2

R28

10k

C17

0.01

µ

R30

24k

R29

24k

R39

330

R38

330

R36

330

R37

330

R35

330

IC1

A52D0001G502

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

17 P47

18 P50

19

P51

20

P52

21 P53 DISPLAY

22 NC

23

P55

24

Vss

25

P56

26

P57

27

P60

28

P61

GROUND

DISPLAY

AUTO OPERATION

PUMP DOWN

29 P62

30

P63

TIMER SHORTEN

31

P64

32

P65

STEPPING

MOTOR

DRIVE

SIGNAL

RESET

RELAY DRIVE

SIGNAL

REMOTE-CONTROL

COMMAND INPUT

POWER CLOCK INPUT

8 MHz

OSC

NC 64

NC 63

NC 62

P24 61 RELAY DRIVE

SIGNAL

P23 60

P22/SCK1 59

AUTO RESTART

P21/SO1 58

P20/SI1

57

POWER

AVref

56

AVdd 55

AN17 54

ANI6 53

PIPE TEMP

INTAKE AIR TRMP

ANI5 52

ANI4 51

ANI3 50

ANI2

49

Fig.2

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Fig.2

AIR TEMP. SENSOR

(15k 3950)

Fig.1

PIPE TEMP. SENSOR

(20k 3950)

(PH4)

CN-TH

3

4

1

2

AIR SWING

MOTOR

3

4

5

1

2

(ZH5)

(MX-5)

CN-STM

3

4

5

1

2

BZ1

BZ

R23

1k

R27

20k

+

–

C16

10

µ

16V

R26

15k

+

–

C15

10

µ

16V

10

11

12

13

14

15

16

9 g

7 f

6 e

5 d

4 c

3 b

2

8 a

1

IC5

A52A2003GR2

STEPPING MOTOR DRIVE

L1

A438LM31A02T

R41

10k

R34

150k

C23

0.01

µ

+

–

C22

10

µ

16V

X1

8MHz (27pF X 2)

(GND)

CHECK PIN

C14

0.1

µ

IC2

A52BR9020F

1 R/B RS 8

2 Vcc GND 7

3 CS

4 SK

D6 6

D1 5

R24

10k

+

–

C18

10 µ

16V

C19

0.01

µ

JX1

1 2 3 4 5 6 7 8 9 c b

4.7k

10k

Q6

A55DC143XKTX

RELAY DRIVE e

5

T1

10

3 6

R1

5.1k

MAIN SWITCH

AC 220-230V

50/60Hz

102

°

C

THERMAL

FUSE c b

4.7k

10k

Q7

A55DC143XKTX

RELAY DRIVE e

CN-FUSE2 1 2

RY-M

RY-H

RY-SHI

SSR1

–

DB1

S1VD20

~

+

~

IC5

78N12H

REGULATOR

I

+

–

C1

3300 µ

35V

(NHG)

12V

G

IC4

78A05

REGULATOR

O

12

+

–

C2

470

µ

25V

(NHG)

I 5V

G

O

5

+

–

C3

100

µ

16V

(NHG)

RY-PWR

AC

(WHT)

113

°

C

THERMAL

FUSE

CN-FUSE1 1 2

ZNR2

511U

FUSE

3.15A

RY-SHI

RY-H

C4

0.1

µ

ZNR1

511U

RY-M

A56W2DEH1-5

1

2

1

2

Q1

DC114EKTX

POWER CLOCK

GENERATOR c

10k

4.7k

b

C5

0.022

µ e

+

–

C5

1

µ

50V

R3

1.0k

R2

10k e c

R4

100k

Q2

2SC2412KTX

RESET SIGNAL

GENERATION b

R5

10k c

Q3

2SC2412KTX

RESET SIGNAL

GENERATION b

ZD1

7.5EL1

R6

12k

R10

13k e

R7

6.2k

C7

0.01

µ

120

CR1

0.022

µ

120

CR2

0.022

µ

120

CR3

0.022

µ

120

CR4

0.022

µ

CN-C

(VH-3)

(GREEN)

1 2 3

C-FM

1.5

µ

400V AC

1 2 3 4 5 6 7 CN-FM

(VH-1)

(GREEN)

FUSE

3.15A

BLUE

BLUE

RED

CAPACITOR

GRY

OVER LOAD

PROTECTOR

YELLOW

COMPRESSOR

Fig. 1

Senser (Thermistor)

Characteristics

70

60

50

1

2

Pipe Temp. Sensor

Intake Air Temp. Sensor

1

40

30

20

10

0

-10 0

2

10 20 30

Temperature (

°

C)

40 50

BLUE

BLUE

RED

CAPACITOR

YELLOW

FAN MOTOR

Fig. 3

OLP Characteristics

(Compressor)

1

0.7

0.5

0.3

5

3

CS-C73K ( CWA 12343 )

20 40 60 80 100 120 140

Fig. 2

Intake Air/ Indoor Heat

Exchanger Temp.

2

1

4

3

Intake Air

Temp. Data

Indoor Heat Exchanger

Temp. Data

0 10 20 30 40 50 60 70

Temperature (

°

C)

R13

10k

C8

0.01

µ

R12

10k

R15

10k

C10

0.01

µ

R14

2k

10

6/21/00, 10:51 AM

11 12

SW2

PUMP DOWN

SW3

AUTO

13


CS-C93K ( CWA 12344 )

FAN

MOTOR

10

7

5

3

14

20 40 60 80 100 120 140

15 16

CS-C123K ( CWA 12352 )

1

0.7

0.5

0.3

5

3

2

17

20 40 60 80 100 120 140

18 19

1


ECD

G

F

E

D

C

B

A

How to use electronic circuit diagram

Before using the circuit diagram, read the following carefully.

* Voltage measurement

Voltage has been measured with a digital tester when the indoor fan is set at high fan speed under the following conditions without setting the timer.

Use them for servicing.

Voltage indication is in Red at all operations.

Cooling

Intake air temperature

Temperature setting

Discharge air temperature

Pipe temperature a. K .... k b. Type

27°C

W ... watt

16°C

* Indications for resistance

17°C

M ... M

15°C

Not indicated .... 1/4W

Not indicated .......... carbon resister

Tolerance±5%

.......... metal oxide resister

Tolerance±1%

* Indications for capacitor a. Unit b. Type

µ .... µF P .... pF

Not indicated ... ceramic capacitor

(S) .......... S series aluminium electrolytic capacitor

(Z) .......... Z series aluminium electrolytic capacitor

(SU) ....... SU series aluminium electrolytic capacitor

(P) .......... P series polyester system

(SXE) ..... SXE series aluminium electrolytic capacitor

(SRA)...... SRA series aluminium electrolytic capacitor

(KME)......KME series aluminium electrolytic capacitor

* Diode without indication .............. MA165

* Circuit Diagram is subject to change without notice for further development.

Name

Sleep Mode Waiting

Sleep Mode Operation

Real Timer

Time Delay Safety Control

Forced Operation

Time Save Control

Anti-Freezing Control

Mode Jugdement

Soft Dry

Off

On

Deodorizing Control

1

Cooling

Soft Dry

Comp. Reverse Rotation Detection

Comp./Fan motor Delay Timer

SLo Timer

Intake Air Anti-Freezing Prevention

POWERFUL MODE

Random FM Timer (ECONOMY Mode)

Random Auto Restart Control

2

TIMER TABLE

Test mode

Time

1 hr.

8 hrs.

1 hr.

10 min.

1 min.

2 min. 58 sec.

60 sec.

7 min.

4 min.

20 sec.

6 min.

10 min.

40 sec

70 sec.

20 sec.

180 sec.

40 sec.

360 sec.

5 min.

2 min.

1.6 sec.

8 sec.

16 min.

15 min.

5 sec.

0 ~ 150 sec.

2 sec.

18 sec.

4 sec.

36 sec.

30 sec.

0 sec.

0 sec.

8 sec.

96 sec.

15 sec.

5 sec.

6 sec.

48 sec.

1 min.

10 sec.

1 sec.

0 sec.

0 sec.

42 sec.

0 sec.

0 sec.

36 sec.

60 sec.

4 sec.

7 sec.

0 sec

3

Remarks

SOFT DRY: 10 min. operation

Comp. ON 5 min. and above

4

2

5

•

ELECTRONIC CIRCUIT DIAGRAM

REMOTE CONTROL

R03 x2

RESET

WIRELESS REMOTE CONTROL

C7

0.01

µ

R11

510k

LED1

SID1003BQ

Q1

2SB710

C1

47

µ

+

–

C2

47

µ

+

–

C9

0.01

µ

C8

0.01

µ

R5

2.2

1/8W

Q2

2SD602

R6

300

R1

100k

C6

0.1

µ

DOOR OPEN/CLOSE

SW1

(CLOSE:ON)

R12

51k

R13

51k

R14

51k

R9

200k

R8

200k

R7

200k

R3

51

R4

22k

R2

1.5k

X1

3.52Hz

(33P x 2)

C4

8P

(NPO)

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

C5

8P

(NPO)

SW2

X2

32.768kHz

J-B

Remote Controller No.

25 PA0

26 PA1

27 PA2

28 PA3

29 PA4

30 PA5

31 PA6

32 PA7

17 XOSC2

18 XOSC1

19 VSS

20 RESET

21 PC3

22 PC2

23 PC1

24 PC0

IC1

SEG15 56

SEG16 55

SEG17 54

SEG18 53

SEG19 52

SEG20 51

SEG21 50

SEG22 49

SEG 7 64

SEG8 63

SEG9 62

SEG10 61

SEG11 60

SEG12 59

SEG13 58

SEG14 57

SEG24 SEG 23

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

CN1

6

(POWERFUL)

SLEEP TIMER

ON

SELF

DIAGNOSIS

TIMER

CANCEL

FAN SPEED

(TEMP )

AIR SWING

AUTO

TIMER

OFF

TIMER

SET

ECONOMY

AIR SWING

MANUAL

(OFF / ON) aI

MODE

(TEMP )

CLOCK

7

2

3

0

1

SW2

OFF

ON

OFF

ON

J-B

SHORT

SHORT

8 9

PRINT PATTERN

INDOOR UNIT PRINTED CIRCUIT BOARD

TOP VIEW


PRINT PATTERN

INDOOR UNIT PRINTED CIRCUIT BOARD

BOTTOM VIEW

10

6/21/00, 10:52 AM

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