Panasonic CS-C73KE User manual

Service Manual

Room Air Conditioners

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

CS-C73KE / CU-C73KE

CS-C93KE / CU-C93KE

CS-C123KE / CU-C123KE

ORDER NO. MAC9810034C2

 1998 Matsushita Air-Conditioning Corp. Sdn. Bhd.

(183914D)

tion is a violation of law.

Untitled-2 6/28/00, 5:22 PM1

– 1 –

MAC9512086C2

CS-C73KE

• 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.

Features

PRECAUTION OF LOW TEMPERATURE

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

!!

!

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.

!!

!

Untitled-1 6/29/00, 7:37 AM1

– 2 –

MAC9512086C2

CS-C73KE

Remote Control

Functions

Operation OFF / ON

OFF / ON IRoom Temperature Setting

TEMP.

• Temperature Setting (16°C to 30°C)

• Automatic Operation

2°C higher than standard

Standard

2°C lower than standard

Operation Mode Selection

•AUTO Automatic Operation Mode

•COOL Cooling Operation Mode

•DRY Soft Dry Operation Mode

•FAN Air Circulation Mode

MODE

TIMER Time / Timer Setting

• Hours and minutes setting.

Clock Setting

• Current time setting.

Sleep Mode Operation OFF / ON

SLEEP

Indoor Fan Speed Selection

FAN SPEED

•h j k Low Speed

l

•h j k Medium Speed

lll

•h j k High Speed

lllll

•AUTOFAN Automatic Fan Speed

•AUTO Automatic Airflow Direction

Control

•MANUAL Airflow Direction Manual Control

Airflow Direction Control

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

ON-TIMER

OFF-TIMER Timer Operation Selection

SET

CANCEL Timer Operation Set / Cancel

• ON Timer and OFF Timer setting and

cancellation.

AIR SWING

Powerful Mode Operation OFF/ON

POWERFUL

Economy Mode Operation OFF/ON

ECONOMY

8 HI

a

9 Lo

CLOCK

Untitled-1 6/29/00, 7:37 AM2

– 3 –

MAC9512086C2

CS-C73KE

Indoor Unit

Functions

Power Switch OFF / ON

POWER I

Auto Operation Button

• Used when the remote control cannot be

used.

Remote Control Signal Receiving

Sound

• It can be controlled by pressing Auto

Operation Button for 10 seconds.

AUTO

OFF / ON

Operation Test Running / Pump

Down Switch

TEST RUN

OFF / ON

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

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)

• Used when test running or servicing.

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.

Operation Mode

• Cooling, Soft Dry, Air Circulation and

Automatic Mode.

Time Delay Safety Control

• Restarting is inhibited for appro. 3 minutes.

7 Minutes Time Save Control

• Cooling Operation only.

Starting Current Control

Powerful Operation

• Reaches the desired room temperature

quickly.

Economy Operation

• To reduce electrical power consumption.

Untitled-1 6/29/00, 7:37 AM3

– 4 –

MAC9512086C2

CS-C73KE

Compressor Reverse Rotation

Protection Control

Outdoor Unit

Functions

• 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.

CU-C123KE

CU-C73KE, CU-C93KE

Untitled-1 6/29/00, 7:37 AM4

– 5 –

MAC9512086C2

CS-C73KE

Product Specifications

Inner diameter

Length

Input

Running Current

COP

Starting Current

Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Volume

Noise Level

Electrical

Data

Piping Connection Port

(Flare piping)

Pipe Size

(Flare piping)

Drain

Hose

Power Cord Length

Number of core-wire

Dimensions

Net Weight

Compressor

Air Circulation

Height

Width

Depth

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

m3/min (cfm)

dB (A)

W

A

W/W

A

inch

mm

m

inch (mm)

lb (kg)

W

rpm

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

2.05 - 2.00

7,000 - 6,830

1.3

2.7

Single

230 - 220

50

600 - 550

2.8 - 2.7

3.42 - 3.64

12

CS-C73KE

SIDE VIEW

5.5 (190)

6.3 (220)

7.0 (250)

–

High 33 - 32, Low 28 - 26

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 mm2)

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

CU-C73KE

TOP VIEW

–

22.2 (780)

High 46 - 45

G ; 3-way valve 3/8"

L ; 2-way valve 1/4"

G (gas side) ; 3/8"

L (liquid side) ; 1/4"

–

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

Untitled-1 6/21/00, 10:59 AM5

– 6 –

MAC9512086C2

CS-C73KE

Product Specifications

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W × H × L)

µF, VAC

Length

Flow Rate

Inner Diameter

Material

Style

Heat

Exchanger

Refrigerant Control Device

Refrigeration Oil

Refrigerant (R-22)

Thermostat

Protection Device

Capillary Tube

Air Filter

Capacity Control

Compressor Capacitor

Fan Motor Capacitor

Unit

mm

(c.c)

g (oz)

mm

s/min

mm

(Plate fin configuration, forced draft)

Capillary Tube

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

CS-C73KE

Evaporator

Copper

Aluminium

Slit Fin

2 × 14

21

614 × 294 × 25.4

–

Electronic Control

–

P.P.

Honeycomb

–

1.5 µF, 400VAC

CU-C73KE

Condenser

Copper

Aluminium

Louver Fin

1 × 18

17

856 × 457.2 × 22

Capillary Tube

SUNISO 4GDID or

ATMOS M60 (260)

645 (22.8)

–

2 Stage Overload Protector

450

7.9

1.2

–

20 µF, 370VAC

1.2 µF, 400VAC

Untitled-1 6/21/00, 10:59 AM6

– 7 –

MAC9512086C2

CS-C73KE

Unit

kW

Btu/h

s/h

Pint/h

Phase

V

Cycle

OUTLET

INTAKE

m3/min (cfm)

dB (A)

W

A

W/W

A

inch

mm

m

inch (mm)

lb (kg)

W

rpm

Product Specifications

Inner diameter

Length

Input

Running Current

COP

Starting Current

Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Volume

Noise Level

Electrical

Data

Piping Connection Port

(Flare piping)

Pipe Size

(Flare piping)

Drain

Hose

Power Cord Length

Number of core-wire

Dimensions

Net Weight

Compressor

Air Circulation

Height

Width

Depth

Type

Motor Type

Rated Output

Type

Material

Motor Type

Input

Rated Output

Fan Low

Speed Medium

High

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

2.75 - 2.65

9,390 - 9,050

1.6

3.4

Single

230 - 220

50

800 - 770

3.5 - 3.6

3.44 - 3.44

16.4

CS-C93KE

SIDE VIEW

6.8 (240)

7.3 (260)

8.7 (310)

–

High 37 - 36, Low 30 - 28

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 mm2)

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)

35.5 - 33.0

15

925

995

1,185

CU-C93KE

TOP VIEW

–

22.2 (780)

High 47 - 46

G ; 3-way valve 3/8"

L ; 2-way valve 1/4"

G (gas side) ; 3/8"

L (liquid side) ; 1/4"

–

18-29/32 (480)

30-23/32 (780)

9-21/32 (245)

64 (29.0)

Rotary (1 cylinder)

rolling piston type

Induction (2-poles)

700

Propeller Fan

AES + Glass Fiber 16%

Induction (6-poles)

54.7 - 47.9

20

–

685

Untitled-1 6/21/00, 10:59 AM7

– 8 –

MAC9512086C2

CS-C73KE

Heat

Exchanger

Refrigerant Control Device

Refrigeration Oil

Refrigerant (R-22)

Thermostat

Protection Device

Capillary Tube

Air Filter

Capacity Control

Compressor Capacitor

Fan Motor Capacitor

Product Specifications

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W × H × L)

µF, VAC

Length

Flow Rate

Inner Diameter

Material

Style

Unit

mm

(c.c)

g (oz)

mm

s/min

mm

(Plate fin configuration, forced draft)

Capillary Tube

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

CS-C93KE

Evaporator

Copper

Aluminium

Slit Fin

2 × 14

21

614 × 294 × 25.4

–

Electronic Control

–

P.P.

Honeycomb

–

1.5 µF, 400VAC

CU-C93KE

Condenser

Copper

Aluminium

Louver Fin

1 × 18

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

–

30 µF, 370VAC

1.2 µF, 400VAC

Untitled-1 6/21/00, 10:59 AM8

– 9 –

MAC9512086C2

CS-C73KE

Unit

kW

Btu/h

s/h

Pint/h

Phase

V

Cycle

OUTLET

INTAKE

m3/min (cfm)

dB (A)

W

A

W/W

A

inch

mm

m

inch (mm)

lb (kg)

W

rpm

Product Specifications

Inner diameter

Length

Input

Running Current

COP

Starting Current

Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Volume

Noise Level

Electrical

Data

Piping Connection Port

(Flare piping)

Pipe Size

(Flare piping)

Drain

Hose

Power Cord Length

Number of core-wire

Dimensions

Net Weight

Compressor

Air Circulation

Height

Width

Depth

Type

Motor Type

Rated Output

Type

Material

Motor Type

Input

Rated Output

Fan Low

Speed Medium

High

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

3.65 - 3.52

12,500 - 12,000

2.1

4.4

Single

230 - 220

50

1,190 - 1,150

5.3 - 5.4

3.07 - 3.06

26

CS-C123KE

SIDE VIEW

7.4 (260)

8.0 (280)

9.0 (290)

–

High 39 - 39, Low 34 - 33

G ; Half Union 1/2"

L ; Half Union 1/4"

G (gas side) ; 1/2"

L (liquid side) ; 1/4"

12

0.7

2.0

3 (1.0 mm2)

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)

35.5 - 33.0

15

1,060

1,145

1,280

CU-C123KE

TOP VIEW

–

32.2 (1130)

High 49 - 48

G ; 3-way valve 1/2"

L ; 2-way valve 1/4"

G (gas side) ; 1/2"

L (liquid side) ; 1/4"

–

21-1/4 (540)

27-17/32 (699)

11-7/32 (285)

82 (37)

Rotary (1 cylinder)

rolling piston type

Induction (2-poles)

1,100

Propeller Fan

AES + Glass Fiber 16%

Induction (6-poles)

72.0 - 68.0

25

–

785

Untitled-1 6/21/00, 10:59 AM9

– 10 –

MAC9512086C2

CS-C73KE

Product Specifications

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W × H × L)

µF, VAC

Length

Flow Rate

Inner Diameter

Material

Style

Heat

Exchanger

Refrigerant Control Device

Refrigeration Oil

Refrigerant (R-22)

Thermostat

Protection Device

Capillary Tube

Air Filter

Capacity Control

Compressor Capacitor

Fan Motor Capacitor

Unit

mm

(c.c)

g (oz)

mm

s/min

mm

(Plate fin configuration, forced draft)

Capillary Tube

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

CS-C123KE

Evaporator

Copper

Aluminium

Slit Fin

2 × 14

21

614 × 294 × 25.4

–

Electronic Control

–

P.P.

Honeycomb

–

1.5 µF, 400VAC

CU-C123KE

Condenser

Copper

Aluminium

Louver Fin

1 × 20

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

–

30 µF, 370VAC

1.5 µF, 400VAC

Untitled-1 6/21/00, 10:59 AM10

– 11 –

MAC9512086C2

CS-C73KE

799

60

58 60 83

279

60

36

190

65 18

122

TEMP

POWERFUL

C

425 48

GAS SIDE

LIQUID SIDE

DRAIN PORT

65

(40) 710 (49)

257.2 17.8

(60) (99)

100 100

350

4

550 16.5

Dimensions

CS-C73KE / CS-C93KE / CS-C123KE

Right piping hole

Centre notch

Slot (2 places)

Left piping hole

Slot (2 places)

Unit : mm

Left piping

hole

Installation

plate

Indoor unit

external

dimensions

line

Right piping hole

Air intake

direction

Remote control transmitter

Air outlet

direction

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

Arrow

Centre Arrow

Untitled-1 6/21/00, 10:59 AM11

– 12 –

MAC9512086C2

CS-C73KE

11 67 67

540

285

(323)

347

7.5

100 cm

10 cm

100 500 99 (52)

69

32162

(120)

699

Dimensions

CU-C123KE

CU-C73KE / CU-C93KE

Anchor Bolt Pitch

323 x 500

Space necessary for

installation

2-Way Valve at Liquid side

(High Pressure)

3-Way Valve at Gas side

(Low Pressure)

67

77

105105 570

467

480

280

312

245

2-way valve at

Liquid side

(High Pressure)

13

Gas side

(Low Pressure)

3-way valve at

93 27.5

780 54

Untitled-1 6/21/00, 10:59 AM12

– 13 –

MAC9512086C2

CS-C73KE

Refrigeration Cycle Diagram

CS-C73KE / CU-C73KE

CS-C93KE / CU-C93KE

CS-C123KE / CU-C123KE

COMPRESSOR

SENSOR

TEMP.

AIR HEAT

EXCHENGER

TEMP.

INDOOR OUTDOOR

HEAT EXCHANGER

(EVAPORATOR) HEAT EXCHANGER

(CONDENSER)

2-WAY

VALVE

3-WAY

TUBE

SENSOR

INTAKE

CAPILLARY

Untitled-1 6/21/00, 10:59 AM13

– 14 –

MAC9512086C2

CS-C73KE

22

11

J9990114

"C"

FUSE

3.15A

RY-PWR

RECEIVER

P.C.B.

Indoor Unit Outdoor Unit

SINGLE PHASE

AC 220-230V

50Hz

C-FM

RY-SHI

RY-HTRANS-

FORMER

(102°C)

FUSE

THERMAL

ZNR1

COMPRESSOR

FAN MOTOR

FAN

MOTOR

OVERLOAD

PROTECTOR

POWER SWITCH ELECTRONIC CONTROLLER

Indicates the electronic control unit.

Indicates the number of core wires. (Example:6C=6 core wires).

3.15A

FUSE

MAIN

CS/CU-C73KH/C93KH

C73KHBLD.DWG

TRANSMITTER

REMOTE CONTROL

WIRELESS

P.C.B.

INDICATOR

9C

MOTOR

STEPPING

5C

SENSOR

PIPE TEMP.

TEMP. SENSOR

INTAKE AIR

4C

RY-M

SSR

ZNR2

CONTROL BOX

TEMP. FUSE

(113°C)

CR1

CR2

CR4

CR3

CS-C73KE / CU-C73KE

CS-C93KE / CU-C93KE

CS-C123KE / CU-C123KE

Block Diagram

Untitled-1 6/28/00, 4:11 PM14

– 15 –

MAC9512086C2

CS-C73KE

21

PROTECTOR

OVER LOAD

TERMINAL

OUTDOOR UNIT

YELLOW

REDBLUE

COMPRESSOR TERMINAL

BRAND MARK

CAPACITOR

FAN MOTOR

CAPACITOR

R

B

Y

R

B

BGRY Y

COMPRESSOR

FUSE 3.15A B

CN-FUSE(B)

CR4

31

W

RR

R

(PIPE TEMP.)

SENSOR

(W)AC

ZNR1

(TEST RUN)

Y

7

220-230V, 50Hz

BL

CONTROLLER

ELECTRONIC

1

CN-C

(G)

ELECTRONIC CONTROLLER

4

31

2

CONTROL No.

REMOTE

AB

BR

R

O

Y

P

Y/G

BL

W

R

BR

O

W

531

W

BR

FUSE(3.15A)

L

P

MOTOR

FAN

SSR

CAPACITOR CN-FM(G)

ZNR2 RY-SHI

RY-H

RY-PWR

TRANSFORMER

PUMP DOWN SW

AUTO SW

CN-RCV (W)

(RECEIVER)

ELECTRONIC

CONTROLLER

WIRELESS

REMOTE

CONTROL

CN-DISP(W)

DISPLAY LAMP

POWER SUPPLY CORD

BR

B

Y/G

W

SENSOR

(INTAKE AIR TEMP.)

1234 54321

CN-TH(Y) CN-STM(G)

AIR

SWING

MOTOR

4321

234

MAIN SW

CN-DISP(W)

INDOOR UNIT

TERMINAL

21

THERMAL

FUSE

(102°C)

THERMAL

FUSE

(113°C)

RY-M

CR3

CR1

CR2

1

3

B

97658

123 56

W

J9890634

CS/CU-C73KE/C93KE/C123KE

C73KE07.DWG

Wiring Diagram

REMARKS:

B : BLUE

BR : BROWN

BL : BLACK

W : WHITE

R : RED

O : ORANGE

P : PINK

Y/G : YELLOW/

GREEN

MODEL

CONNECTION

YELLOW-BLUE

YELLOW-BROWN

BROWN-ORANGE

ORANGE-WHITE

WHITE-RED

Resistance of Indoor Fan Motor Windings

CS-C73KE

CWA92288

536.5

77.1

43.9

42.7

111.4

CS-C123KE

CWA92290

457.4

56.1

61.2

25.3

142.5

CS-C93KE

CWA92289

449.5

87.7

56.1

18.6

124.1

MODEL

CONNECTION

BLUE-YELLOW

YELLOW-RED

Resistance of Outdoor Fan Motor Windings

CU-C73KE

CWA95238

310.0 Ω

409.8 Ω

CU-C123KE

CWA95378

174.5 Ω

331.0 Ω

CU-C93KE

@

MODEL

CONNECTION

C-R

C-S

CU-C73KE

2RS110D5CA04

5.382 Ω

5.328 Ω

CU-C123KE

2KS224D5CA02

2.211 Ω

2.924 Ω

CU-C93KE

2PS146D5BA04

3.941 Ω

3.499 Ω

Resistance of Compressor Windings

CS-C73KE / CU-C73KE

CS-C93KE / CU-C93KE

CS-C123KE / CU-C123KE

Untitled-1 6/28/00, 4:11 PM15

– 16 –

MAC9512086C2

CS-C73KE

Operation Details

1) Cooling Mode Operation

Cooling in operation according to Remote Control setting.

• 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.

• 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 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).

∆ T = Intake air temperature – Indoor heat exchanger temperature

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

Time Delay Safety Control (3 minutes)

7 minutes Time Saved Control

Starting Current Control

Anti-Freezing Control

• 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.

Compressor Reverse Rotation

Protection Control

Recovery

4 min

Compressor OFF

Indoor Heat

Exchanger

Temperature

(°C)

2

10

•

Compressor starts for > 5 minutes

• ∆ T < 2.5˚C for 2 minutes

Compressor

restarts

(3 minutes waiting)

Compressor

OFF

➡➡

Untitled-1 6/28/00, 4:11 PM16

– 17 –

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.

Operation Details

Cooling Operation Time Diagram

* 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.

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

Operation

Stop

Indoor

Fan

Comp.

SLo SLo SLo SLo

ON ONOFF

stop stop stop

30"

stop

30"160"

1

40" 40"

20"

✕

..

.

. 2

✕

..

.

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Basic Time

Compressor

Indoor Fan

Outdoor Fan

Operation LED

1’ 3’ 1’ 7’ 1’ 4’

1.5K

ON

OFF

Intake

Temperature

Set Temp.

10°C

2°C

Pipe temperature

Untitled-1 6/28/00, 4:11 PM17

– 18 –

MAC9512086C2

CS-C73KE

Operation Details

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 opera-

tion is turned off, it stops for 6 minutes.

• 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.)

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

• Fan speed rotates at SLo and Lo speed.

• Deodorizing Control.

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

Starting Current Control

Anti-Freezing Control

Compressor Reverse Rotation

Protection Control

Automatic Fan Speed Mode

Indoor

Fan

COMP

stop stop stop

SLo Lo SLo

ON ON

OFF

40" 40"6'

Time Delay Safety Control

Untitled-1 6/28/00, 4:11 PM18

– 19 –

MAC9512086C2

CS-C73KE

Operation Details

Soft Dry Operation Time Diagram

a – c, p~r : Cooling Operation

c – p, r – v : Soft Dry Operation

e – f : Soft Dry OFF

j – l : 60 sec. Forced Operation

q – t : Anti Freezing Control

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Basic Time

Compressor

Indoor Fan

Outdoor Fan

Operation LED

1’ 1’

1’6’ 6’ 6’ 6’

4’ 1’

Cooling ON

Cooling OFF

Soft Dry ON

Soft Dry OFF, ON

1.5°C

1.0°C

SLoSLo SLo LoSLo SLo SLo SLoSLo SLo SLo SLo

Indoor

Heat Exchanger

Temp.

10°C

2°C

6’

Intake Air

Temperature

Set Temp.

Operation

Stop

Untitled-1 6/28/00, 4:11 PM19

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Panasonic CS-C73KE User manual

Panasonic CS-C73KE User manual

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