Panasonic CS-C73KE 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 – 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)
All rights reserved. Unauthorized copying and distribu-
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
– Autorestartatrandomoperationafterpower
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 pipingupto10
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
Thisserviceinformationisdesignedfor experienced repairtechnicians onlyand isnot designedfor useby thegeneral public.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-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
a
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)
m3/min (cfm)
m3/min (cfm)
m3/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
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
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)
m3/min (cfm)
m3/min (cfm)
m3/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
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
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)
m3/min (cfm)
m3/min (cfm)
m3/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
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
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
<Front View>
Left piping
hole
<Back View>
Installation
plate
Indoor unit
external
dimensions
line
Right piping hole
Air intake
direction
Remote control transmitter
Air outlet
direction
<Side View> <Side View>
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
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
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
B
Y
R
B
BGRY Y
COMPRESSOR
FUSE 3.15A B
CN-FUSE(B)
CR4
31
W
W
RR
R
R
(PIPE TEMP.)
SENSOR
(W)AC
ZNR1
(TEST RUN)
Y
7
220-230V, 50Hz
BL 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
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 W W 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 W W W 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
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– 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
➡➡
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– 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.
<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
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
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– 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
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– 19 –
MAC9512086C2
CS-C73KE
Operation Details
Soft Dry Operation Time Diagram
<Description of operation>
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
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