Panasonic CS-A73KE User manual

ServiceManual

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 – 30

●Installation Information ..........................31 – 32

●2-way, 3-way Valves..............................33 – 39

●Servicing Information.............................40 – 42

●Troubleshooting Guide ..........................43 – 44

●Technical Data.......................................45 – 48

●Exploded View...................................49, 51, 53

●Replacement Parts List .....................50, 52, 54

●Electronic Parts List.......................................55

CS-A73KE / CU-A73KE

CS-A93KE / CU-A93KE

CS-A123KE / CU-A123KE

ORDER NO. MAC9902015C2

 1999 Matsushita Air-Conditioning Corp. Sdn. Bhd.

(183914D)

tion is a violation of law.

Untitled-16 6/19/00, 11:26 AM1

– 1 –

MAC9512086C2

CS-A73KE

• High Efficiency

• Compact Design

• Comfort Enviroment

– 8 hours of sleep mode operation

– Air purifying filter with deodorizing function

to reduce dust, smoke and odours.

• Random Auto Restart

– Auto restart at randomly after power failure

• Removable and Washable

Front Panel

• Quality Improvement

– Gas leakage protection

– Prevent compressor reverse rotation

– 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–A73KE, CS/CU–A93KE, long piping up to 10

meter.

– CS/CU–A123KE, 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

Thisserviceinformationisdesignedforexperienced repairtechniciansonlyandis notdesigned foruse bythe generalpublic.Itdoesnotcontain

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-10 6/19/00, 11:04 AM1

– 2 –

MAC9512086C2

CS-A73KE

Remote Control

Functions

Operation OFF / ON

OFF / ON IRoom Temperature Setting

TEMP.

• Temperature Setting (16°C to 30°C)

• Automatic Operation

Operation with 2°C higher than

standard temperature.

Operation with standard

temperature.

Operation with 2°C lower than

standard temperature.

Operation Mode Selection

•AUTO Automatic Operation Mode

•HEAT Heating Operation Mode

•COOL Cooling Operation Mode

•DRY Soft Dry Operation 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

•h j k Medium Speed

lll

•h j k High Speed

lllll

•AUTO FAN 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

9 Lo

CLOCK

Untitled-10 6/19/00, 11:04 AM2

– 3 –

MAC9512086C2

CS-A73KE

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

– Heating : Fan speed varies from Me →

SLo in accordance with indoor

heat exchanger.

– Cooling : Fan rotates at Hi and Me

speed. Deodorizing control is

available.

– Soft Dry : Fan rotates at SLo speed.

Deodorizing control is avail-

able.

Airflow Direction Control

• Automatic air swing and manual adjusted

by remote control for vertical airflow.

• Manually adjusted by hand for horizontal

airflow.

Operation Mode

• Heating, Cooling, Soft Dry 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.

Hot-Start Control

• The indoor fan remain stop until the indoor

heat exchanger temperature reaches 30°C

• The indoor fan will operate at SLo and Lo–

when indoor heat exchanger temperature

reaches 30°C - 39°C

Untitled-10 6/19/00, 11:04 AM3

– 4 –

MAC9512086C2

CS-A73KE

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-A123KE

CU-A73KE, CU-A93KE

Deice Control

Overload Protection Control

• Outdoor fan stops when indoor heat

exchanger temperature rises to 51°C and

above, and restarts when the indoor heat

exchanger temperature drops to 49°C and

below.

• Compressor stop when indoor heat ex-

changer temperature reaches 65°C or

above. (Heating Operation Only)

4-Way Valve Control

• When the unit is switched to "OFF" during

Heating Operation, 4-way valve stays at

Heating position for 5 minutes.

Outdoor Fan Motor Control

Compressor Protection Control

• If the outdoor fan motor is not running after

compressor starts for 50 secs., compressor

will stop. (Cooling and Soft Dry Operation

only).

• To prevent frosting at outdoor heat

exchanger. (Only for Heating Operation)

•

Temperature of outdoor heat exchanger is

sensed by TRS (Thermal Reed Switch).

Untitled-10 6/19/00, 11:04 AM4

– 5 –

MAC9512086C2

CS-A73KE

Product Specifications

Cooling Capacity

Heating 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

Inner diameter

Length

Input

Running Current

COP

Starting Current

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

Unit

Btu/h

s/h

Pint/h

Phase

Cycle

OUTLET

INTAKE

m3/min (cfm)

dB (A)

W/W

inch

inch (mm)

lb (kg)

rpm

2.20 - 2.10

7,500 - 7,200

2.45 - 2.40

8,360 - 8,200

1.4

3.0

Single

230 - 220

Cooling ; 700 - 680

Heating ; 640 - 600

Cooling ; 3.6 - 3.5

Heating ; 3.4 - 3.2

Cooling ; 3.14 - 3.09

Heating ; 3.83 - 4.00

15.5

CU-A73KE

TOP VIEW

–

27.8 (981) - 26.8 (946)

Cooling ; High 47/45

Heating ; High 49/47

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-pole)

600

Propeller Fan

AES + Glass Fiber 12%

Induction (6-pole)

65.8 - 57.5

–

730 - 705

CS-A73KE

SIDE VIEW

Cooling ; 5.9 (206) - 5.7 (200)

Heating ; 6.7 (238) - 6.6 (233)

Cooling ; 6.7 (237) - 6.4 (227)

Heating ; 7.6 (269) - 7.5 (265)

Cooling ; 7.5 (260) - 7.2 (250)

Heating ; 8.5 (300) - 8.4 (300)

–

Cooling ; High 34/33, Low 29/27

Heating ; High 36/35, Low 30/28

G ; Half Union 3/8"

L ; Half Union 1/4"

G (gas side) ; 3/8"

L (liquid side) ; 1/4"

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-pole)

29.0 - 27.0

835 - 810

945 - 920

1055 - 1030

Untitled-10 6/19/00, 11:04 AM5

– 6 –

MAC9512086C2

CS-A73KE

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

(c.c)

g (oz)

s/min

(Plate fin configuration, forced draft)

Capillary Tube

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

CS-A73KE

Evaporator

Copper

Aluminium

Slit Fin

2 ×14

614 ×294 ×25.4

–

Electronic Control

–

P.P.

Honeycomb

–

1.5 µF, 400VAC

CU-A73KE

Condenser

Copper

Aluminium

Louver Fin

1 ×18

856 ×457.2 ×22

Capillary Tube

SUNISO 4GDID or

ATMOS M60 (290)

815 (28.8)

–

Overload Protector

Cooling ;850, Heating ;360

Cooling ;4.5, Heating ;10.5

Cooling ;1.1, Heating ;1.3

–

15 µF, 440VAC

1.2 µF, 400VAC

Untitled-10 6/19/00, 11:04 AM6

– 7 –

MAC9512086C2

CS-A73KE

Product Specifications

Inner diameter

Length

Input

Running Current

COP

Starting Current

Cooling Capacity

Heating 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

Btu/h

s/h

Pint/h

Phase

Cycle

OUTLET

INTAKE

m3/min (cfm)

dB (A)

W/W

inch

inch (mm)

lb (kg)

rpm

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

CS-A93KE

SIDE VIEW

Cooling ; 6.4 (226) - 5.9 (209)

Heating ; 6.8 (240) - 6.5 (228)

Cooling ; 7.6 (269) - 7.1 (251)

Heating ; 8.1 (286) - 7.7 (273)

Cooling ; 9.2 (320) - 8.9 (310)

Heating ; 9.8 (350) - 9.7 (340)

–

Cooling ; High 39/38, Low 29/28

Heating ; High 39/39, Low 30/28

G ; Half Union 3/8"

L ; Half Union 1/4"

G (gas side) ; 3/8"

L (liquid side) ; 1/4"

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-pole)

37.0 - 34.0

865 -810

1030 -970

1245 - 1215

CU-A93KE

TOP VIEW

–

27.8 (981) - 26.8 (946)

Cooling ; High 49/48

Heating ; High 49/47

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)

71 (32.0)

Rotary (1 cylinder)

rolling piston type

Induction (2-pole)

800

Propeller Fan

AES + Glass Fiber 12%

Induction (6-pole)

65.8 - 57.5

–

730 - 705

2.80 - 2.70

9,550 - 9,200

3.40 - 3.30

11,590 - 11,250

1.6

3.4

Single

230 - 220

Cooling ; 980 - 950

Heating ; 885 - 870

Cooling ; 4.6 - 4.6

Heating ; 4.2 - 4.2

Cooling ; 2.86 - 2.84

Heating ; 3.84 - 3.79

Untitled-10 6/19/00, 11:04 AM7

– 8 –

MAC9512086C2

CS-A73KE

Product Specifications

Heat

Exchanger

Refrigerant Control Device

Refrigeration Oil

Refrigeration (R-22)

Thermostat

Protection Device

Capillary Tube

Air Filter

Capacity Control

Compressor Capacitor

Fan Motor Capacitor

Description

Tube material

Fin material

Fin Type

Row / Stage

FPI

Size (W ×H ×L)

µF, VAC

Length

Flow Rate

Inner Diameter

Material

Style

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

Unit

(c.c)

g (oz)

s/min

(Plate fin configuration, forced draft)

Capillary Tube

CS-A93KE

Evaporator

Copper

Aluminium

Slit Fin

2 ×14

614 ×294 ×25.4

–

Electronic Control

–

P.P.

Honeycomb

–

1.5 µF, 400VAC

CU-A93KE

Condenser

Copper

Aluminium

Louver Fin

1 ×18

856 ×457.2 ×22

Capillary Tube

SUNISO 4GDID or

ATMOS M60 (350)

935 (33.0)

–

Overload Protector

Cooling ; 1,075, Heating ; 325

Cooling ; 5.0, Heating ; 13.4

Cooling ; 1.2, Heating ; 1.4

–

25 µF, 370VAC

1.2 µF, 400VAC

Untitled-10 6/19/00, 11:04 AM8

– 9 –

MAC9512086C2

CS-A73KE

Product Specifications

Inner diameter

Length

Input

Running Current

COP

Starting Current

Cooling Capacity

Heating 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

Btu/h

s/h

Pint/h

Phase

Cycle

OUTLET

INTAKE

m3/min (cfm)

dB (A)

W/W

inch

inch (mm)

lb (kg)

rpm

Indoor Air (Lo)

Indoor Air (Me)

Indoor Air (Hi)

Outdoor Air

3.55 - 3.40

12,110 - 11,590

4.20 - 4.05

14,320 - 13,810

2.1

4.4

Single

230 - 220

Cooling ; 1.24 - 1.20

Heating ; 1.17 - 1.13

Cooling ; 5.6 - 5.6

Heating ; 5.2 - 5.2

Cooling ; 2.86 - 2.83

Heating ; 3.59 - 3.58

CS-A123KE

SIDE VIEW

Cooling ; 7.5 (263) - 7.0 (247)

Heating ; 8.0 (281) -7.5 (266)

Cooling ; 8.1 (284) - 7.7 (271)

Heating ; 8.6 (303) - 8.3 (293)

Cooling ; 9.0 (320) - 8.8 (310)

Heating ; 9.6 (340) - 9.5 (340)

–

Cooling ; High 39/39, Low 34/33

Heating ; High 39/39, Low 33/32

G ; Half Union 1/2"

L ; Half Union 1/4"

G (gas side) ; 1/2"

L (liquid side) ; 1/4"

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-pole)

35.5 - 33.0

1060 -1000

1145 - 1100

1280 - 1260

CU-A123KE

TOP VIEW

–

35.0 (1,236) - 32.8 (1,193)

Cooling ; High 49/48

Heating ; 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)

86 (39.0)

Rotary (1 cylinder)

rolling piston type

Induction (2-pole)

1,100

Propeller Fan

AES + Glass Fiber 12%

Induction (6-pole)

71.0 - 67.0

–

805 - 780

Untitled-10 6/19/00, 11:04 AM9

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