Panasonic CS-VA70KE User manual

©1999 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
CS-VA70KE
CU-VA70KE
CS-VA90KE
CU-VA90KE
CS-VA120KE
CU-VA120KE
Room Air Conditioners
Order number RAC9911056C2

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-VA70KE / CU-VA70KE 7
3.2. CS-VA90KE / CU-VA90KE 9
3.3. CS-VA120KE / CU-VA120KE 11
4 Dimensions 13
4.1. CS-VA70KE / CS-VA90KE / CS-VA120KE (INDOOR
UNIT) 13
4.2. CU-VA70KE / CU-VA90KE (OUTDOOR UNIT) 14
4.3. CU-VA120KE(OUTDOOR UNIT) 14
5 Refrigeration Cycle Diagram 15
5.1. CS-VA70KE / CU-VA70KE, CS-VA90KE / CU-VA90KE
15
5.2. CS-VA120KE / CU-VA120KE 16
6 Block Diagram 17
7 Wiring Diagram 18
8 Operation Details 19
8.1. COOLING MODE OPERATION 19
8.2. SOFT DRY MODE OPERATION 21
8.3. HEATING MODE OPERATION 23
8.4. AUTOMATIC MODE OPARATION 27
8.5. SLEEP MODE AUTO OPERATION 27
8.6. AUTO RESTART CONTROL 28
8.7. INDOOR FAN MOTOR CONTROL 28
8.8. AIRFLOW DIRECTION CONTROL 29
8.9. DELAY ON TIMER CONTROL 29
9 Installation And Servicing Air Conditioner Using R410A 30
9.1. OUTLINE 30
9.2. TOOLS FOR INSTALLING/SERVICING REFRIGERANT
PIPING 31
9.3. REFRIGERANT PIPING WORK 35
9.4. INSTALLATION, TRANSFERRING SERVICING 37
10 Installation Information 41
10.1. ATTACHED ACCESSORIES 41
10.2. SELECT THE BEST LOCATION 41
10.3. INDOOR/OUTDOOR UNIT INSTALLATION DIAGRAM 42
11 2-WAY / 3-WAY VALES 43
11.1. EVACUATION OF INSTALLATION 44
11.2. PUMPING DOWN 45
11.3. EVACUATION OF RE-INSTALLATION 46
11.4. BALANCE REFRIGERANT OF THE 2-WAY, 3-WAY
VALVE 47
11.5. EVACUATION 48
12 Servicing Information 49
12.1. INSPECTION POINTS FOR THE INDOOR ELECTRONIC
CONTROLLER 49
12.2. INDOOR FAN MOTOR REMOVAL PROCEDURE 49
12.3. CROSS FLOW FAN REMOVAL PROCEDURE 51
12.4. OUTDOOR UNIT SERVICING 52
12.5. REMOTE CONTROL RESET 52
12.6. CHANGING THE WIRELESS REMOTE CONTROL
TRANSMISSION CODE 53
13 Troubleshooting Guide 54
13.1. RELATIONSHIP BETWEEN THE CONDITION OF THE
AIR CONDITIONER AND GAS PRESSURE AND
ELECTRIC CURRENT 55
13.2. DIAGNOSIS METHODS OF A MALFUNNCTION OF A
COMPRESSOR AND A 4-WAY VALVE 55
14 Technical Data 56
14.1. THERMOSTAT CHARACTERISTICS 56
14.2. OPERATION CHARACTERISTICS 57
15 Electronic Circuit Diagram 60
15.1. HOW TO USE ELECTRONIC CIRCUIT DIAGRAM 60
15.2. ELECTRONIC CIRCUIT DIAGRAM 61
15.3. CHARACTERISTICS CHART 63
15.4. REMOTE CONTROLLER 64
15.5. TIMER TABLE 65
16 Printed Circuit Board 66
16.1. INDOOR UNIT (MAIN) 66
17 Exploded View & Replacement Parts List 67
17.1. CS-VA70KE / CS-VA90KE 67
17.2. CS-VA120KE 69
17.3. CU-VA70KE / CU-VA90KE 71
17.4. CU-VA120KE 73
18 Electronic Parts List 75
CONTENTS
Page Page
2
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

· 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-VA70KE / CS-VA90KE)
− − −
− Long piping up to 15 m (CS-VA120KE)
· Quality Improvement
− − −
− Low voltage protection
− − −
− Gas leakage protection
− − −
− Prevent compressor reverse cycle
− − −
− 2-stage OLP to protect compressor
(CS-VA90KE / CS-VA120KE)
· Service Improvement
− − −
− Easy fan motor replacement procedure
− − −
− Front side servicing for outdoor unit
1 Features
3
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

2 Functions
2.1. REMOTE CONTROL
4
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

2.2. INDOOR UNIT
5
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

2.3. OUTDOOR UNIT
6
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

3 Product Specifications
3.1. CS-VA70KE / CU-VA70KE
Unit CS-VA70KE CU-VA70KE
Cooling Capacity kW
Btu/h 2.20 7,500
Heating Capacity kW
Btu/h 2.35 8,000
Moisture Removal /h
Pint/h 1.3 2.7
Power Source Phase
V
Cycle
Single
230
50
Airflow Method
Air Volume Indoor Air(Lo) m / min(cfm) Cooling ; 5.5(190)
Heating ; 5.5(190) -
Indoor Air(Me) m / min(cfm) Cooling ; 6.0(210)
Heating ; 6.0(210) -
Indoor Air(Hi) m/ min(cfm) Cooling ; 6.7(240)
Heating ; 6.7(240) -
Outdoor Air m / min(cfm) -22.4(790)
Noise Level dB(A) Cooling ; High 34,Low 30
heating ; High 33,Low 29 Cooling ; 46 Heating ; 48
Electrical
Data Input kW Cooling ; 0.64 Heating ; 0.60
Running Current ACooling ; 3.2
Heating ; 3.0
COP Cooling ; 3.44
Heating ; 3.92
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 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 - 550
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 - 58.6
rated Output W 20 20
Fan
Speed Low rpm 950 -
Medium rpm 1,030 -
High(heating) rpm 1,550 730
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) - 860(30.4)
7
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

Unit CS-VA70KE CU-VA70KE
Thermostat Electronic Control -
Protection Device -Overload Protector
Capillary Tube Length
flow Rate
Inner Diameter
mm
/min
mm
-
-
-
C ,C
970
5.0
1.2
C
310
11.3
1.3
C
610
6.5
1.2
Air Filter Material
style P.P Honeycomb -
Capacity Control Capillary Tube
Compressor Capacitor µF,VAC - 25µF,370VAC
Fan motor Capacitor µF,VAC - 1.2µF,400VAC
· Specifications are subject to change without notice for further improvement.
8
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

3.2. CS-VA90KE / CU-VA90KE
Unit CS-VA90KE CU-VA90KE
Cooling Capacity kW
Btu/h 2.85 9,700
Heating Capacity kW
Btu/h 3.30 11,300
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) Cooling ; 6.3(220)
Heating ; 6.4(230) -
Indoor Air(Me) m / min(cfm) Cooling ; 7.4(260)
Heating ; 7.5(260) -
Indoor Air(Hi) m/ min(cfm) Cooling ; 8.5(300)
Heating ; 8.6(300) -
Outdoor Air m / min(cfm) -22.4(790)
Noise Level dB(A) Cooling ; High 38,Low 30
heating ; High 38,Low 30 Cooling ; 48 Heating ; 48
Electrical
Data Input kW Cooling ; 0.94 Heating ; 0.86
Running Current ACooling ; 4.3
Heating ; 4.0
COP Cooling ; 3.03
Heating ; 3.84
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) 71(32.0)
Compressor Type -Rotary(1 cylinder
rolling piston type
Motor Type -Induction(2-poles)
Rated Output W - 750
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 - 58.6
rated Output W 20 20
Fan
Speed Low rpm 980 -
Medium rpm 1,150 -
High(heating) rpm 1,310 730
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 19
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
9
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE

Unit CS-VA90KE CU-VA90KE
Capillary Tube Length
flow Rate
Inner Diameter
mm
/min
mm
-
-
-
C ,C
970
5.0
1.2
C
750
15.4
1.7
C
590
8.2
1.3
Air Filter Material
style P.P Honeycomb -
Capacity Control Capillary Tube
Compressor Capacitor µF,VAC - 25µF,370VAC
Fan motor Capacitor µF,VAC - 1.2µF,400VAC
· Specifications are subject to change without notice for further improvement.
10
CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE