Panasonic CS-C73KE, CU-C93KECS-C123KE, CU-C73KECS-C93KE, CU-C123KE Service Manual
ORDER NO. MAC9810034C2
Service Manual
Room Air Conditioners
CS-C73KE / CU-C73KE
CS-C93KE / CU-C93KE
CS-C123KE / CU-C123KE
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.
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.
– 1 –
Functions
Remote Control
CS-C73KE
OFF / ON I
MODE
FAN SPEED
AIR SWING
Operation OFF / ON
Operation Mode Selection
• AUTO Automatic Operation Mode
• COOL Cooling Operation Mode
• DRY Soft Dry Operation Mode
• FAN Air Circulation Mode
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
Airflow Direction Control
• AUTO Automatic Airflow Direction
Control
• MANUAL Airflow Direction Manual Control
TEMP.
ON-TIMER
OFF-TIMER
TIMER
SET
CANCEL
CLOCK
Room Temperature Setting
• Temperature Setting (16°C to 30°C)
• Automatic Operation
8 HI
a
a
a
9 Lo
2°C higher than standard
Standard
2°C lower than standard
Timer Operation Selection
• 24-hour, OFF / ON Real Timer Setting.
Time / Timer Setting
• Hours and minutes setting.
Timer Operation Set / Cancel
• ON Timer and OFF Timer setting and
cancellation.
Clock Setting
• Current time setting.
POWERFUL
ECONOMY
Powerful Mode Operation OFF/ON
Economy Mode Operation OFF/ON
– 2 –
SLEEP
Sleep Mode Operation OFF / ON
CS-C73KE
Functions
Indoor Unit
POWER I
AUTO
OFF / ON
TEST RUN
OFF / ON
Power Switch OFF / ON
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.
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
• ECONOMY
(Orange).....
(Green).....
Lights up in Powerful
Mode Operation
Lights up in Economy
Mode Operation
Operation Mode
• Cooling, Soft Dry, Air Circulation and
Automatic Mode.
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
Powerful Operation
• Reaches the desired room temperature
quickly.
Economy Operation
• To reduce electrical power consumption.
Time Delay Safety Control
• Restarting is inhibited for appro. 3 minutes.
7 Minutes Time Save Control
• Cooling Operation only.
– 3 –
Functions
Outdoor Unit
CS-C73KE
CU-C73KE, CU-C93KE
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)
CU-C123KE
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.
– 4 –
CS-C73KE
Product Specifications
Cooling Capacity
Moisture Removal
Power Source
Airflow Method
Air Volume
Noise Level
Electrical
Data
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
Input
Running Current
Unit
kW
Btu/h
s/h
Pint/h
Phase
V
Cycle
OUTLET
INTAKE
3
/min (cfm)
m
3
m
/min (cfm)
3
m
/min (cfm)
m3/min (cfm)
dB (A)
W
A
CS-C73KE
2.05 - 2.00
7,000 - 6,830
230 - 220
SIDE VIEW
5.5 (190)
6.3 (220)
7.0 (250)
–
High 33 - 32, Low 28 - 26
600 - 550
2.8 - 2.7
CU-C73KE
1.3
2.7
Single
50
TOP VIEW
–
–
–
22.2 (780)
High 46 - 45
COP
Starting Current
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Dimensions
Net Weight
Compressor
Air Circulation
Inner diameter
Length
Number of core-wire
Motor Type
Rated Output
Motor Type
Fan Low
Speed Medium
Height
Width
Depth
Type
Type
Material
Input
Rated Output
High
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
W
W
W
rpm
rpm
rpm
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
2
3 (1.0 mm
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"
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
– 5 –
Product Specifications
CS-C73KE
Unit
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Capacity Control
Compressor Capacitor
Fan Motor Capacitor
• Specifications are subject to change without notice for further improvement.
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W × H × L)
Length
Flow Rate
Inner Diameter
Material
Style
mm
(c.c)
g (oz)
mm
s/min
mm
µF, VAC
µF, VAC
CS-C73KE
Evaporator
Copper
Aluminium
Slit Fin
(Plate fin configuration, forced draft)
2 × 14
21
614 × 294 × 25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
Capillary Tube
–
1.5 µF, 400VAC
2 Stage Overload Protector
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)
–
450
7.9
1.2
–
20 µF, 370VAC
1.2 µF, 400VAC
– 6 –
CS-C73KE
Product Specifications
Cooling Capacity
Moisture Removal
Power Source
Airflow Method
Air Volume
Noise Level
Electrical
Data
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
Input
Running Current
Unit
kW
Btu/h
s/h
Pint/h
Phase
V
Cycle
OUTLET
INTAKE
3
/min (cfm)
m
3
m
/min (cfm)
3
m
/min (cfm)
m3/min (cfm)
dB (A)
W
A
CS-C93KE
2.75 - 2.65
9,390 - 9,050
230 - 220
SIDE VIEW
6.8 (240)
7.3 (260)
8.7 (310)
–
High 37 - 36, Low 30 - 28
800 - 770
3.5 - 3.6
CU-C93KE
1.6
3.4
Single
50
TOP VIEW
–
–
–
22.2 (780)
High 47 - 46
COP
Starting Current
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Dimensions
Net Weight
Compressor
Air Circulation
Inner diameter
Length
Number of core-wire
Motor Type
Rated Output
Motor Type
Fan Low
Speed Medium
Height
Width
Depth
Type
Type
Material
Input
Rated Output
High
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
W
W
W
rpm
rpm
rpm
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
2
3 (1.0 mm
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
3.44 - 3.44
16.4
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
– 7 –
Product Specifications
CS-C73KE
Unit
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Capacity Control
Compressor Capacitor
Fan Motor Capacitor
• Specifications are subject to change without notice for further improvement.
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W × H × L)
Length
Flow Rate
Inner Diameter
Material
Style
mm
(c.c)
g (oz)
mm
s/min
mm
µF, VAC
µF, VAC
CS-C93KE
Evaporator
Copper
Aluminium
Slit Fin
(Plate fin configuration, forced draft)
2 × 14
21
614 × 294 × 25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
Capillary Tube
–
1.5 µF, 400VAC
2-Stage Overload Protector
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)
–
1,040
9.0
1.5
–
30 µF, 370VAC
1.2 µF, 400VAC
– 8 –
CS-C73KE
Product Specifications
Cooling Capacity
Moisture Removal
Power Source
Airflow Method
Air Volume
Noise Level
Electrical
Data
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
Input
Running Current
Unit
kW
Btu/h
s/h
Pint/h
Phase
V
Cycle
OUTLET
INTAKE
3
/min (cfm)
m
3
m
/min (cfm)
3
m
/min (cfm)
m3/min (cfm)
dB (A)
W
A
CS-C123KE
3.65 - 3.52
12,500 - 12,000
230 - 220
SIDE VIEW
7.4 (260)
8.0 (280)
9.0 (290)
–
High 39 - 39, Low 34 - 33
1,190 - 1,150
5.3 - 5.4
CU-C123KE
2.1
4.4
Single
50
TOP VIEW
–
–
–
32.2 (1130)
High 49 - 48
COP
Starting Current
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Dimensions
Net Weight
Compressor
Air Circulation
Inner diameter
Length
Number of core-wire
Motor Type
Rated Output
Motor Type
Fan Low
Speed Medium
Height
Width
Depth
Type
Type
Material
Input
Rated Output
High
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
W
W
W
rpm
rpm
rpm
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
2
3 (1.0 mm
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
3.07 - 3.06
26
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
– 9 –
Product Specifications
CS-C73KE
Unit
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Capacity Control
Compressor Capacitor
Fan Motor Capacitor
• Specifications are subject to change without notice for further improvement.
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W × H × L)
Length
Flow Rate
Inner Diameter
Material
Style
mm
(c.c)
g (oz)
mm
s/min
mm
µF, VAC
µF, VAC
CS-C123KE
Evaporator
Copper
Aluminium
Slit Fin
(Plate fin configuration, forced draft)
2 × 14
21
614 × 294 × 25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
Capillary Tube
–
1.5 µF, 400VAC
2-Stage Overload Protector
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)
–
535
17.0
1.7
–
30 µF, 370VAC
1.5 µF, 400VAC
– 10 –
CS-C73KE
Dimensions
CS-C73KE / CS-C93KE / CS-C123KE
Left piping
hole
<Side View>
Air intake
direction
Air outlet
direction
<Front View>
60
58
799
<Back View>
60
83
GAS SIDE
279
Unit : mm
190
60
Right piping hole
<Side View>
Remote control transmitter
65
36
18
Installation
plate
Indoor unit
external
dimensions
line
LIQUID SIDE
TEMP
DRAIN PORT
65
425 48
C
POWERFUL
Relative position between the indoor unit and the installation plate <Front View>
Slot (2 places)
Slot (2 places)
(49)
Right piping hole
(99)
17.8
257.2
4
(40)
(60)
Centre notch
710
550
100 100
350
Arrow
Centre
Arrow
122
16.5
Left piping hole
– 11 –
Dimensions
CU-C73KE / CU-C93KE
CS-C73KE
480
467
780 54
105105 570
27.5
93
67
77
13
245
2-way valve at
Liquid side
(High Pressure)
3-way valve at
Gas side
(Low Pressure)
280
312
CU-C123KE
Space necessary for
installation
10 cm
10 cm
100 cm
Anchor Bolt Pitch
323 x 500
699
100 500 99 (52)
7.5
540
11 67 67
69
32162
(120)
285
2-Way Valve at Liquid side
(High Pressure)
3-Way Valve at Gas side
(Low Pressure)
(323)
347
– 12 –
CS-C73KE
Refrigeration Cycle Diagram
CS-C73KE / CU-C73KE
CS-C93KE / CU-C93KE
CS-C123KE / CU-C123KE
INDOOR OUTDOOR
2-WAY
VALVE
CAPILLARY
TUBE
INTAKE
AIR
TEMP.
SENSOR
HEAT EXCHANGER
(EVAPORATOR)
HEAT
EXCHENGER
TEMP.
SENSOR
3-WAY
VALVE
HEAT EXCHANGER
(CONDENSER)
COMPRESSOR
– 13 –
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
STEPPING5CSENSOR
PIPE TEMP.
TEMP. SENSOR
INTAKE AIR
4C
RY-M
SSR
ZNR2
CONTROL BOX
TEMP. FUSE
(113°C)
CR1
CR2
CR4
CR3
Block Diagram
CS-C73KE
CS-C73KE / CU-C73KE
CS-C93KE / CU-C93KE
CS-C123KE / CU-C123KE
– 14 –
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