Panasonic CS-VC70KE User manual

©1999 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
CS-VC70KE
CU-VC70KE
CS-VC90KE
CU-VC90KE
CS-VC120KE
CU-VC120KE
Room Air Conditioners
Order number RAC9911055C2

1 Features 3
2 Functions 4
2.1. REMOTE CONTROL 4
2.2. INDOOR UNIT 5
2.3. OUTDOOR UNIT 6
3 Product Specifications 7
3.1. CS-VC70KE / CU-VC70KE 7
3.2. CS-VC90KE / CU-VC90KE 9
3.3. CS-VC120KE / CU-VC120KE 10
4 Dimensions 11
4.1. CS-VC70KE / CS-VC90KE / CS-VC120KE (INDOOR
UNIT) 11
4.2. CU-VC70KE / CU-VC90KE (OUTDOOR UNIT) 12
4.3. CU-VC120KE(OUTDOOR UNIT) 12
5 Refrigeration Cycle Diagram 13
6 Block Diagram 14
7 Wiring Diagram 15
8 Operation Details 16
8.1. COOLING MODE OPERATION 16
8.2. SOFT DRY MODE OPERATION 18
8.3. AIR CIRCULATION MODE OPERATION 20
8.4. AUTOMATIC MODE OPARATION 20
8.5. SLEEP MODE AUTO OPERATION 21
8.6. AUTO RESTART CONTROL 22
8.7. INDOOR FAN MOTOR CONTROL 22
8.8. AIRFLOW DIRECTION CONTROL 23
8.9. DELAY ON TIMER CONTROL 23
9 Installation And Servicing Air Conditioner Using R410A 24
9.1. OUTLINE 24
9.2. TOOLS FOR INSTALLING/SERVICING REFRIGERANT
PIPING 25
9.3. REFRIGERANT PIPING WORK 29
9.4. INSTALLATION, TRANSFERRING SERVICING 31
10 Installation Information 35
10.1. ATTACHED ACCESSORIES 35
10.2. SELECT THE BEST LOCATION 35
10.3. INDOOR/OUTDOOR UNIT INSTALLATION DIAGRAM 36
11 2-Way / 3-Way Valves 37
11.1. EVACUATION OF INSTALLATION 38
11.2. PUMPING DOWN 39
11.3. EVACUATION OF RE-INSTALLATION 40
11.4. BALANCE REFRIGERANT OF THE 2-WAY, 3-WAY
VALVE 41
11.5. EVACUATION 42
12 Servicing Information 43
12.1. INSPECTION POINTS FOR THE INDOOR ELECTRONIC
CONTROLLER 43
12.2. INDOOR FAN MOTOR REMOVAL PROCEDURE 43
12.3. CROSS FLOW FAN REMOVAL PROCEDURE 45
12.4. OUTDOOR UNIT SERVICING 46
12.5. REMOTE CONTROL RESET 46
12.6. CHANGING THE WIRELESS REMOTE CONTROL
TRANSMISSION CODE 47
13 Troubleshooting Guide 48
13.1. RELATIONSHIP BETWEEN THE CONDITION OF THE
AIR CONDITIONER AND GAS PRESSURE AND
ELECTRIC CURRENT 49
13.2. DIAGNOSIS METHODS OF A MALFUNNCTION OF A
COMPRESSOR 49
14 Technical Data 50
14.1. THERMOSTAT CHARACTERISTICS 50
14.2. OPERATION CHARACTERISTICS 51
15 Electronic Circuit Diagram 53
15.1. HOW TO USE ELECTRONIC CIRCUIT DIAGRAM 53
15.2. TIMER TABLE 54
15.3. ELECTRONIC CIRCUIT DIAGRAM 55
16 Printed Circuit Board 57
16.1. INDOOR UNIT (MAIN) 57
17 Exploded View & Replacement Parts List 58
17.1. CS-VC70KE / CS-VC90KE 58
17.2. CS-VC120KE 60
17.3. CU-VC70KE / CU-VC90KE 62
17.4. CU-VC120KE 64
18 Electronic Parts List 66
CONTENTS
Page Page
2
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

· R410A
No Ozone Layer Damage
Our new models use R410A as its refrigerant.
This Refrigerant does not contain chlorine, so there´s no
danger of damage to the ozone layer.
· Compact Design
· Comfort Improvement
− − −
− Wider range of horizontal discharge air
− − −
− Longer hours of sleep mode operation
· Auto Restart
− − −
− Auto restart operation after power failure
· Removable and Washable Front Panel
· Deodorizing Air Purifying Filter
− − −
− Air Purifying Filter features a deodorizing function that
removes unpleasant odors from the air.
· Installation Work Improvement
− − −
− Long piping up to 10 m (CS-VC70KE / CS-VC90KE)
− − −
− Long piping up to 15 m (CS-VC120KE)
· Quality Improvement
− − −
− Low voltage protection
− − −
− Gas leakage protection
− − −
− Prevent compressor reverse cycle
− − −
− 2-stage OLP to protect compressor
(CS-VC120KE)
· Service Improvement
− − −
− Easy fan motor replacement procedure
− − −
− Front side servicing for outdoor unit
(CS-VC70KE / CS-VC90KE)
1 Features
3
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

2 Functions
2.1. REMOTE CONTROL
4
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

2.2. INDOOR UNIT
5
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

2.3. OUTDOOR UNIT
6
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

3 Product Specifications
3.1. CS-VC70KE / CU-VC70KE
Unit CS-VC70KE CU-VC70KE
Cooling Capacity kW
Btu/h 2.34 8,000
Moisture Removal /h
Pint/h 1.4 3.0
Power Source Phase
V
Cycle
Single
230
50
Airflow Method
Air Volume Indoor Air(Lo) m / min(cfm) 6.1(220) -
Indoor Air(Me) m / min(cfm) 6.8(240) -
Indoor Air(Hi) m/ min(cfm) 7.3(260) -
Outdoor Air m / min(cfm) -22.4(790)
Noise Level dB(A) High 35,Low 31 44
Electrical
Data Input kW 0.65
Running Current A 3.2
COP 3.35
Starting Current A 13
Piping Connection Port
(Flare piping) inch inch G ; Half Union 3/8” L ; Half Union 1/4” G ; 3-Way valve 3/8” L ; 2-Way valve 1/4”
Pipe Size
(Flare piping) inch inch G(gas side) ; 3/8” L(liquid side) ; 1/4” G(gas side) ; 3/8” L(liquid side) ; 1/4”
Drain
Hose Inner diameter mm 12 -
Length m 0.7 -
Power Cord length
Number of core-wire m 2.1 m 3 (1.0 mm )- -
Dimensions Height inch(mm) 11 - 7/16(290) 18 - 29/32(480)
Width inch(mm) 31 - 15/32(799) 30 - 23/32(780)
Depth inch(mm) 6 - 29/32(175) 9 - 21/32(245)
Net Weight lb(kg) 18(8.0) 57(26.0)
Compressor Type -Rotary(1 cylinder
rolling piston type
Motor Type -Induction(2-poles)
Rated Output W - 550
Air Circularizing Type Cross-flow Fan Propeller Fan
Material AS+Glass Fiber 30 AES+Glass Fiber 16
Motor Type Transiator(4-poles) Induction(6-poles)
Input W - 55.6
rated Output W 5 15
Fan
Speed Low rpm 990 -
Medium rpm 1,100 -
High(heating) rpm 1,180 670
Heat
Exchange description Evaporator Condenser
Tube material Copper Copper
Fine material Aluminium Aluminium
Fine type Slit Fin Corrugated Fin
Row/Stage (Plate fin configuration, forced draft)
2x12 1x18
FPI 18 18
Size(W x H x L) mm 600 x 252 x 25.4 856 x 457.2 x 22
Refrigerant Control Device - Capillary Tube
refrigeration Oil (c.c) - RB68A(300)
Refrigerant(R410A) g(oz) - 800(28.2)
Thermostat Electronic Control -
Protection Device -Overload Protector
Capillary Tube Length
flow Rate
Inner Diameter
mm
/min
mm
-
-
-
865
6.8
1.3
Air Filter Material
style P.P Honeycomb -
Capacity Control Capillary Tube
7
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

Unit CS-VC70KE CU-VC70KE
Compressor Capacitor µF,VAC - 15µF,400VAC
Fan motor Capacitor µF,VAC 0.6µF,400VAC 1.2µF,400VAC
· Specifications are subject to change without notice for further improvement.
8
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

3.2. CS-VC90KE / CU-VC90KE
Unit CS-VC90KE CU-VC90KE
Cooling Capacity kW
Btu/h 2.68 9,100
Moisture Removal /h
Pint/h 1.6 3.4
Power Source Phase
V
Cycle
Single
230
50
Airflow Method
Air Volume Indoor Air(Lo) m / min(cfm) 6.1(220) -
Indoor Air(Me) m / min(cfm) 6.8(240) -
Indoor Air(Hi) m/ min(cfm) 7.3(260) -
Outdoor Air m / min(cfm) -22.4(790)
Noise Level dB(A) High 35,Low 31 46
Electrical
Data Input kW 0.80
Running Current A 3.7
COP 3.35
Starting Current A 20
Piping Connection Port
(Flare piping) inch inch G ; Half Union 3/8” L ; Half Union 1/4” G ; 3-Way valve 3/8” L ; 2-Way valve 1/4”
Pipe Size
(Flare piping) inch inch G(gas side) ; 3/8” L(liquid side) ; 1/4” G(gas side) ; 3/8” L(liquid side) ; 1/4”
Drain
Hose Inner diameter mm 12 -
Length m 0.7 -
Power Cord length
Number of core-wire 2.1 m 3 (1.0 mm )- -
Dimensions Height inch(mm) 11 - 7/16(290) 18 - 29/32(480)
Width inch(mm) 31 - 15/32(799) 30 - 23/32(780)
Depth inch(mm) 6 - 29/32(175) 9 - 21/32(245)
Net Weight lb(kg) 18(8.0) 64(29.0)
Compressor Type -Rotary(1 cylinder
rolling piston type
Motor Type -Induction(2-poles)
Rated Output W - 700
Air Circularizing Type Cross-flow Fan Propeller Fan
Material AS+Glass Fiber 30 AES+Glass Fiber 12
Motor Type Transiator(4-poles) Induction(6-poles)
Input W - 55.6
rated Output W 5 20
Fan
Speed Low rpm 990 -
Medium rpm 1,100 -
High(heating) rpm 1,180 705
Heat
Exchange description Evaporator Condenser
Tube material Copper Copper
Fine material Aluminium Aluminium
Fine type Slit Fin Corrugated Fin
Row/Stage (Plate fin configuration, forced draft)
2x12 1x18
FPI 18 17
Size(W x H x L) mm 600 x 252 x 25.4 856 x 457.2 x 22
Refrigerant Control Device - Capillary Tube
refrigeration Oil (c.c) - RB68A(350)
Refrigerant(R410A) g(oz) - 880(31.1)
Thermostat Electronic Control -
Protection Device -Overload Protector
Capillary Tube Length
flow Rate
Inner Diameter
mm
/min
mm
-
-
-
535
8.7
1.3
Air Filter Material
style P.P Honeycomb -
Capacity Control Capillary Tube
Compressor Capacitor µF,VAC - 30µF,370VAC
Fan motor Capacitor µF,VAC 0.6µF,400VAC 1.2µF,400VAC
· Specifications are subject to change without notice for further improvement.
9
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

3.3. CS-VC120KE / CU-VC120KE
Unit CS-VC120KE CU-VC120KE
Cooling Capacity kW
Btu/h 3.55 12,000
Moisture Removal /h
Pint/h 2.0 4.2
Power Source Phase
V
Cycle
Single
230
50
Airflow Method
Air Volume Indoor Air(Lo) m / min(cfm) 7.3(260) -
Indoor Air(Me) m / min(cfm) 7.6(270) -
Indoor Air(Hi) m/ min(cfm) 8.3(290) -
Outdoor Air m / min(cfm) -22.0(780)
Noise Level dB(A) High 39,Low 36 46
Electrical
Data Input kW 1.27
Running Current A 5.6
COP 2.8
Starting Current A 25
Piping Connection Port
(Flare piping) inch inch G ; Half Union 1/2” L ; Half Union 1/4” G ; 3-Way valve 1/2” L ; 2-Way valve 1/4”
Pipe Size
(Flare piping) inch inch G(gas side) ; 1/2” L(liquid side) ; 1/4” G(gas side) ; 1/2” L(liquid side) ; 1/4”
Drain
Hose Inner diameter mm 12 -
Length m 0.7 -
Power Cord length
Number of core-wire 2.1 m 3 (1.0 mm )- -
Dimensions Height inch(mm) 11 - 7/16(290) 19 - 29/32(505)
Width inch(mm) 31 - 15/32(799) 30 - 23/32(780)
Depth inch(mm) 6 - 29/32(175) 9 - 21/32(245)
Net Weight lb(kg) 18(8.0) 77(35.0)
Compressor Type -Rotary(1 cylinder
rolling piston type
Motor Type -Induction(2-poles)
Rated Output W - 1100
Air Circularizing Type Cross-flow Fan Propeller Fan
Material AS+Glass Fiber 30 AES+Glass Fiber 12
Motor Type Transiator(4-poles) Induction(6-poles)
Input W - 60
rated Output W 10 20
Fan
Speed Low rpm 1205 -
Medium rpm 1,250 -
High(heating) rpm 1,360 705
Heat
Exchange description Evaporator Condenser
Tube material Copper Copper
Fine material Aluminium Aluminium
Fine type Slit Fin Corrugated Fin
Row/Stage (Plate fin configuration, forced draft)
2x12 1x19
FPI 21 21
Size(W x H x L) mm 600 x 252 x 25.4 776.2 x 482.6 x 22
Refrigerant Control Device - Capillary Tube
refrigeration Oil (c.c) - RB68A(350)
Refrigerant(R410A) g(oz) - 820(28.9)
Thermostat Electronic Control -
Protection Device -Overload Protector
Capillary Tube Length
flow Rate
Inner Diameter
mm
/min
mm
-
-
-
545
12.5
1.5
Air Filter Material
style P.P Honeycomb -
Capacity Control Capillary Tube
Compressor Capacitor µF,VAC - 30µF,370VAC
Fan motor Capacitor µF,VAC 1.0µF,450VAC 1.2µF,400VAC
· Specifications are subject to change without notice for further improvement.
10
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

4 Dimensions
4.1. CS-VC70KE / CS-VC90KE / CS-VC120KE (INDOOR UNIT)
Relative position between the indoor unit and the installation plate <Front View>
799
48.5
60
290
<Front View>
175
61
34.5
52
direction
Air intake
Air outlet
direction
Left piping hole Right piping hole
290
115
55 60
2100
57
142
16
Remote control transmitter
(45)(410)
<Back View> Installation plate hooks
Drain ports Gas
side Liquid
side
(40) 710 (40)
276 7
(60) (110)
100 100
Slot (2 places)
Slot (2 places)
Centre notch
Indoor unit external
dimensions line
Installation plate
Left piping hole
Arrow
Arrow Centre Right piping hole
Installation plate positioning gauge
350
7
457
13.5
11
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

4.2. CU-VC70KE / CU-VC90KE (OUTDOOR UNIT)
67
77
105105 570
467 480
280
312
245
2-way valve
at Liquid side
13
at Gas side
3-way valve
93 27.5
780 57
Panasonic
4.3. CU-VC120KE(OUTDOOR UNIT)
67
93
105105 570
494 505
280
312
245
2-way valve
at Liquid side
11
at Gas side
3-way valve
112 27.5
780 57
12
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

5 Refrigeration Cycle Diagram
COMP.
SENSOR
TEMP.
AIR HEAT
EXCHANGER
TEMP.
INDOOR
CS-VC70KE / CU-VC70KE
CS-VC90KE / CU-VC90KE
CS-VC120KE / CU-VC120KE
OUTDOOR
HEAT EXCHANGER
C1 ; Capillary Tube
(EVAPORATOR) HEAT EXCHANGER
(CONDENSER)
2-WAY
VALVE
VALVE
3-WAY
C1 STRAINER DRYER
SENSOR
INTAKE
13
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

6 Block Diagram
22
11
3C
"C"
FUSE
3.15A
RY-C RECEIVER
P.C.B.
SINGLE PHASE
AC 230V
50Hz
RY-H
TRANS-
FORMER
THERMAL
FUSE
(99°C)
(102°C)
FUSE
THERMAL
ZNR
FAN
MOTOR
POWER SWITCH ELECTRONIC CONTROLLER
Indicates the electronic control unit.
Indicates the number of core wires. (Example:6C=6 core wires).
COMP
O.L.P.
CU-VC90KE
FAN
MOTOR
RY-L
P.C.B.
INDICATOR
4C
5C
STEPPING
MOTOR
INDOOR UNIT OUTDOOR UNIT
WIRELESS
REMOTE CONTROL
TRANSMITTER
5A
FUSE
ZNR
SSR
MAIN
COMP
O.L.P.
FOR
CU-VC120KE
**
CS-VC70KE / CU-VC70KE
CS-VC90KE / CU-VC90KE
CS-VC120KE / CU-VC120KE
FOR
CU-VC70KE
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE
14

7 Wiring Diagram
REMARKS:
B : BLUE
BR : BROWN
BL : BLACK
W : WHITE
R : RED
O : ORANGE
P : PINK
Y/G : YELLOW/
GREEN
GRY : GRAY
CONNECTION
C-R
C-S
5RS080DAA ( )
5.81
9.30
Resistance of Outdoor Fan Motor Windings
Resistance of Indoor Fan Motor Windings
CONNECTION
MODEL
YELLOW - BROWN
YELLOW - BLUE
CS-VC70KE,90KE
CWA92232 ( )
495.2
BROWN - ORANGE
77.7
ORANGE - RED
74.5
370.4
Resistance of Compressor Windings
CS-VC70KE / CU-VC70KE
Resistance of Compressor Windings
CS-VC90KE / CU-VC90KE
CONNECTION
C-R
C-S
5PS102DAA ( )
3.86
3.31
Resistance of Compressor Windings
CS-VC120KE / CU-VC120KE
CONNECTION
C-R
C-S
CS-VC70KE / CU-VC70KE
CS-VC90KE / CU-VC90KE
CS-VC120KE / CU-VC120KE
POWER SUPPLY CORD
Y/G
B
W
WW
1
1
2
3
4
5
6
1
1
1234
234
4321
WWWW
3
3
5
7
Y
BR
O
BL
R
B
P
LRV-C
OLP (W)
CR1
FUSE
(3.15A 250V)
THERMAL FUSE
(99¡C)
R
BB
B
B
BR
R
O
Y
P
1
2
3
1
2
3
4
5
1
2
3
4
5
A
BL
RBL
2
MAIN SW.
TRANSFORMER
1
4
3
BR
BR
THERMAL FUSE
(102¡C)
R
3321 1R
CN FUSE
(B)
REMOTE
CONTROL
CN-T (W)
T(BL)T(BL)
WIRELESS
REMOTE
CONTROL
ELECTRONIC
CONTROLLER
(RECEIVER)
CN-RCV (W)
MOTOR
CN-STM (G)
ZNR
SSR
RY-H
CN-FM (G)
CN-C (G)
RY-M
CN-RCV (W)
ZNR
FAN
MOTOR
CAPACITOR
CN-DISP (W)
CN-DISP (W)
DISPLAY LAMP
ELECTRONIC
CONTROLLER
CN-TH (Y)
PUMP
DOWN SW
(TEST RUN)
AUTO
SW.
SENSOR
(AIR TEMP.) SENSOR
(PIPE TEMP.)
Y/G
INDOOR UNIT
TERMINAL
OUTDOOR UNIT
TERMINAL
FAN MOTOR
YELLOW BLUE
BLUE
RED
BLUE
OVERLOAD
PROTECTOR
RED
GRAY
12
12
BLUE
BLUE
CAPACITOR COMPRESSOR
CAPACITOR
3
2
1
FUSE
5A 25W
BLUE
(BLU)
YELLOW
(YEL)
RED
(RED)
TRADE MARK
THE PARENTHESIZED
LETTER IS INDICATED
ON TERMINAL COVER.
COMP. TERMINAL
CS-VC120KE
CWA92231 ( )
515.9
28.3
139.3
311.9
MODEL
CS-VC70KE CS-VC120KE
CONNECTION
YELLOW - RED
BLUE -YELLOW
CS-VC90KE
CWA95237( )
333.9
545.7
CWA95238( )
310.0
409.8
CWA95319( )
260.5
446.0
YELLOW
2TS023G3BA01 ( )
29.84
46.21
CU-VC70KE
CU-VC90KE
OVERLOAD
PROTECTOR
GRAY
3
2
1
YELLOW
CU-VC120KE
15
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

8 Operation Details
8.1. COOLING MODE OPERATION
Cooling in operation according to the remote control setting.
8.1.1. Time Delay Safety Control (3 minutes)
· When the compressor is stopped by Power Switch, Remote Control or when there is a power failure, it restarts after 3 minutes
when the Power Switch, Remote Control is turned ON or when the power supply is resumed.
· When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3 minutes.
8.1.2. 7 Minutes Time Save Control
· The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is below the compressor
ON temperature.
8.1.3. Anti-Freezing Control
· If the temperature of the indoor heat exchanger falls
continuously below 2°C for 4 minutes, 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.
8.1.4. Compressor Reverse Rotation Protection Control
· If the compressor is operating continually 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, the compressor will stop and restart automatically.
(Time Delay Safety Control is valid).
T =Intake air temperature - Indoor heat exchanger temperature
This is to protect the compressor against reverse rotation when there is an instantaneous power failure.
16
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

8.1.5. Automatic Fan Speed Mode
When Automatic Fan Speed is selected on the remote control during cooling operation.
· Fan speed rotates in the range of Hi to Me.
· Deodorizing Control.
*1 Fan Speed is Hi until the compressor stops (when the set temperature is reached).
*2 Fan Speed is Me after the compressor restarts.
8.1.6. Cooling Operation Time Diagram
17
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

8.2. SOFT DRY MODE OPERATION
· The unit performs 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.
8.2.1. Time Delay Safety Control
· Once the compressor stops, it will not restart for 3 minutes during Cooling operation.
8.2.2. Anti-Freezing Control
· Same as Anti-Freezing Control for Cooling Mode operation.(For Soft Dry operation,6 minutes waiting is valid during compressor
stops.)
8.2.3. Compressor Reverse Rotation Protection
· Same as Compressor Reverse Rotation Protection Control for Cooling Mode Operation.
8.2.4. Automatic Fan Speed Mode
When Automatic Fan Speed is selected on the 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.
· SLo : Indoor Fan rotates at 4-second intervals at low speed.
18
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

8.2.5. Soft Dry Operation Time Diagram
19
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE

8.3. 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.
8.3.1. Air Circulation Mode Operation Time Diagram
8.4. AUTOMATIC MODE OPARATION
8.4.1. Standard for Determining Operation Mode
1.Indoor fan operates at Lo fan speed for 20 seconds.
2.After judging indoor air temperature, the operation mode is determined and operation continued at the mode determined.
3.After the operation mode has been determined, the mode does not change.However,Soft Dry mode operation includes Cooling
mode operation.
4.If Automatic Mode operation is started while the air conditioner is operating, operation will continue.If current operation is in
Cooling mode (including the operation which is a part of Soft Dry mode operation), it will be maintained, for 20 seconds at Lo
fan speed.Then,the selected operation mode will continue.
5.Room temperature adjustment The following are added to the setting temperature specified as above.
Cooling Soft Dry
Higher →+2°C 27 °C 24 °C
Standard →±0°C 25 °C 22 °C
Lower →-2°C 23 °C 20 °C
20
CS-VC70KE / CU-VC70KE / CS-VC90KE / CU-VC90KE / CS-VC120KE / CU-VC120KE