Panasonic CS-MVG103KE, CU-MVG153KE Service Manual

Order number RAC9911058C2

Room Air Conditioners

CS-MVG103KE CU-MVG153KE

CS-MVG103KE / CU-MVG153KE

CONTENTS

Page Page

1 Features 2 2 Functions

2.1. REMOTE CONTROL

2.2. INDOOR UNIT

2.3. OUTDOOR UNIT

3 Product Specifications 4 Dimensions

4.1. CS-MVG103KE (INDOOR UNIT)

4.2. CU-MVG153KE (OUTDOOR UNIT)

5 Refrigeration Cycle Diagram 6 Block Diagram 7 Wiring Diagram

7.1. CS-MVG103KE ( INDOOR UNIT )

7.2. CU-MVG153KE ( OUTDOOR UNIT )

8 Operation Details (FUNCTIONS)

8.1. SIMULTANEOUS OPERATION CONTROL

8.2. TEMPERATURE SHIFT

8.3. COMPRESSOR OPERATING FREQUENCY OPERATION

8.4. COOLING OPERATION

8.5. SOFT DRY OPERATION

8.6. HEATING OPERATION

8.7. FAN OPERATION

8.8. AUTOMATIC OPERATION

8.9. INDOOR FAN SPEED CONTROL

8.10. OUTDOOR FAN CONTROL

8.11. AIRFLOW DIRECTION

8.12. QUIET OPERATION

8.13. POWERFUL MODE OPERATION

8.14. SLEEP MODE OPERATION

8.15. DELAY ON TIMER CONTROL

8.16. AUTO RESTART CONTROL

8.17. POWER MONITOR DISPLAY

8.18. REMOTE CONTROL SIGNAL RECEIVING SOUND ON/OFF

9 Operation Details (PROTECTION)

9.1. PROTECTION CONTROL FOR ALL OPERATIONS

10

11 12 13

13 14

15

15 16

17 18 20 21 25 25 27 29 29 31 31 32 33 33 34

34

35

3

3 4 6

7 9

9

9.2. PROTECTION CONTROL FOR COOLING & SOFT DRY

9.3. PROTECTION CONTROL FOR HEATING OPERATION

10 Installation And Servicing Air Conditioner Using R410A

10.1. OUTLINE

10.2. TOOLS FOR INSTALLING/SERVICING REFRIGERANT PIPING

10.3. REFRIGERANT PIPING WORK

10.4. INSTALLATION, TRANSFERRING, SERVICING

11 Installation Information

11.1. ATTACHED ACCESSORIES

11.2. SELECT THE BEST LOCATION

11.3. INDOOR/OUTDOOR UNIT INSTALLATION DIAGRAM

11.4. CONNECTION PIPES FOR AIR CONDITIONER UNITS WITH R410A

11.5. NOTE

12 Servicing Information

12.1. TROUBLESHOOTING

12.2. SELF DIAGNOSIS DISPLAY

12.3. REMOTE CONTROL

12.4. DISASSEMBLY OF PARTS

13 Technical Data

13.1. OPERATION CHARACTERISTICS

14 Electronic Circuit Diagram

14.1. HOW TO USE ELECTRONIC CIRCUIT DIAGRAM

14.2. TIMER TABLE

14.3. INDOOR UNIT

14.4. OUTDOOR UNIT

14.5. REMOTE CONTROLLER

15 Printed Circuit Board

15.1. INDOOR UNIT

15.2. OUTDOOR UNIT / MAIN PCB

15.3. OUTDOOR UNIT / TRANSISTOR MODULE

16 Exploded View & Replacement Parts List

16.1. CS-MVG103KE

16.2. CU-MVG153KE

17 Electronic Parts List

39 40

41

42 46 48

52

52 52 54

55 55

56

56 58 60 61

69

71

71 71 72 74 76

77

77 79 81

82

82 84

86

1 Features

Product

·

−

Powerful Mode for quick cool/heat

− −

−

Compressor operating frequency control to maintain

− −

desired room temperature

−

Automatic Restart after power failure

− −

−

Washable front panel

− −

−

Power Monitor Display

− −

Serviceability

·

−

Self diagnosis

− −

−

Test Run at both Cooling and Heating rated frequency

− −

Quality Improvement

·

−

High power supply voltage protection

− −

−

Low power supply voltage protection

− −

−

Gas leakage detection

− −

2

2 Functions

2.1. REMOTE CONTROL

CS-MVG103KE / CU-MVG153KE

3

CS-MVG103KE / CU-MVG153KE

2.2. INDOOR UNIT

4

CS-MVG103KE / CU-MVG153KE

5

CS-MVG103KE / CU-MVG153KE

2.3. OUTDOOR UNIT

6

3 Product Specifications

Unit CS-MVG103KE CU-MVG153KE

Cooling Capacity

kW

Btu/h

Heating Capacity

kW

Btu/h

Moisture Removal /h

Pint/h

Power Source Phase

V

Cycle

Airflow Method

CS-MVG103KE / CU-MVG153KE

(1 unit) (2 units)

2.8(0.7 3.5) 2.25(0.45 2.3)

9,500(2,400 11,900) 7,650(1,500 7,850)

(1 unit) (2 units)

4.0(0.7 4.3) 2.6(0.45 3.05) x 2

13,600(2,400

14,700) 8,850(1,500 10,400) x 2

(1 unit) (2 units)

1.6 2.5

3.4 5.3 Single

230

50

x 2

Air Volume Indoor Air(Lo) m / min(cfm) Cooling ; 7.0(247)

Indoor Air(Me) m / min(cfm) Cooling ; 7.6(268)

Indoor Air(Hi) m / min(cfm) Cooling ; 8.3(293)

Outdoor Air m / min(cfm) - Hi; 30.0(1050)

Noise Level dB(A) Cooling ; High 39,Low 27

Electrical Data

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord length Number of core-wire

Dimensions Height inch(mm) 10 - 31/32(279) 25 - 25/32(540)

Net Weight lb(kg) 20(9.0) 95(43) Compressor Type - Rotary

Air Circulation Type Cross-flow Fan Propeller Fan

Heat Exchange

Input

kW

Running Current

A

COP (1 unit) (2 units)

Starting Current A 6.50

inch inch

inch

inch Inner diameter mm 12 Length m 0.7 -

Width inch(mm) 31 - 15/32(799) 30 - 3/4(780) Depth inch(mm) 7 - 15/32(190) 11 - 13/32(289)

Motor Type - Brushless(4-poles) Rated Output W - 1,200

Material AS+Glass Fiber 30 AES+Giass Fiber 12 Motor Type Transiator(4-poles) Induction(6-poles) Input W - 110 rated Output W 20 25 Fan

Speed

description Evaporator Condenser Tube material Copper Copper Fine material Aluminium Aluminium Fine type Slit Fin Corrugated Fin

Row/Stage

FPI 21 17 Size(W x H x L) mm 600 x 252 x 25.4 673 x 504 x 18.2

Low Cool(Heat) rpm 880(970) Medium Cool(Heat) rpm 1,100(1,170) High Cool(Heat) rpm 1,290(1,310) 700

Heating ; 7.2(254)

Heating ; 7.8(275)

Heating ; 8.5(300)

heating ; High 39,Low 27

Cooling ; 770(250 1,100) 1,350(255 1,380) Heating ;1,320(215 1,900) 1,280(220 1,800)

Cooling ;;3.70 ( max 5.40 ) 6.50 ( max 6.70 ) Heating 6.35 ( max 9.90 ) 6.15 ( max 9.90 )

Cooling ; 3.64 3.33

Heating ; 3.03 4.06

(1 unit) (2 units)

G ; Half Union 3/8”

L ; Half Union 1/4”

G(gas side) ; 3/8”

L(liquid side) ; 1/4”

-

(Plate fin configuration,forced draft)

2/14

G ; 3-Way valve 3/8”

L ; 2-Way valve 1/4”

L(liquid side) ; 1/4”

-

Cooling ; 46 Heating ; 47

G(gas side) ; 3/8”

-

(2 cylinder)

2/24

615 x 504 x 18.2

7

CS-MVG103KE / CU-MVG153KE

Unit CS-MVG103KE CU-MVG153KE Refrigerant Control Device - Expansion Valve refrigeration Oil (c.c) - RB88A(290) Refrigerant(R410A) g(oz) - 1250(44.1) Thermostat Electronic Control Protection Device Electronic Control Air Filter Material

Capacity Control Expansion valve Fan motor Capacitor µF,VAC - 2.0µF,400VAC

·

Specifications are subject to change without notice for further improvement.

style

P.P

Honeycomb

-

8

4 Dimensions

4.1. CS-MVG103KE (INDOOR UNIT)

CS-MVG103KE / CU-MVG153KE

9

CS-MVG103KE / CU-MVG153KE

4.2. CU-MVG153KE (OUTDOOR UNIT)

10

5 Refrigeration Cycle Diagram

4-WAY VAL VE

2-WAY VALVE

PIPE

TEMP.

SENSOR

PIPE

TEMP.

SENSOR

TEMP.

INTAKE

PIPE

TEMP.

SENSOR

PIPE

TEMP.

SENSOR

INDOOR A

OUTDOOR

COOLING HEATING

HEAT EXCHANGER

(EVAPORATOR)

HEAT EXCHANGER

(CONDENSER)

2-WAY VALVE

VALVE

3-WAY

2-WAY VALVE

VALVE

3-WAY

C1

STRAINER

C ; CAPILLARY TUBE

SENSOR

TEMP.

INTAKE

PIPE

TEMP.

SENSOR

PIPE

TEMP.

SENSOR

INDOOR B

HEAT EXCHANGER

(EVAPORATOR)

DISCHARGE TEMP

SENSOR

COMPRESSOR

TEMP SENSOR

OUTDOOR AIR

TEMP SENSOR

DRYER

STRAINER

EXPANSION VALVE (A)

EXPANSION VALVE (B)

SUCTION

TEMP.

SENSOR

CS-MVG103KE / CU-MVG153KE

11

6 Block Diagram

INDOOR UNIT A OUTDOOR UNIT

WIRELESS

REMOTE CONTROL

TRANSMITTER

FUSE

(3.15A)

CS-MVG103KE / CU-MVG153KE

OUITDOOR

POWER SUPPLY

SINGLE

PHASE

230V 50Hz

1 2

FUSE (20A)

1

C.T.

RY-AC

PTC

RY-PWR

12

RECEIVER

P.C.B.

INCIDATOR

P.C.B.

FAN

MOTOR

LOUVER

MOTOR

FM

3C

9C

3C

5C

ELECTRONIC

CONTROLLER

TERNINAL THERMAL

FUSE 102

INDOOR UNIT B

SAME AS

UNIT A

RY-L

RY-2CV

RY-HOT

DIODE

-

4-WAY

NOISE FILLTER

ELECTRONIC

CONTROLLER

2

3

1

2

3

VALVE

2-WAY VALVE

MOTOR

FM

FAN

REACTOR

++

+

NOISE FILLTER

5C

EXP.VALVE(A)

EXP.VALVE(B)

COMPRESSOR

Indicates the electronic control unit.

"C" Indicates the number of core wires. (Example:5C=5 core wires).

7 Wiring Diagram

Y

7.1. CS-MVG103KE ( INDOOR UNIT )

PUMP DOWN SW.

PUMP DOWN SW. ( TEST RUN)

( TEST RUN)

FUSE

T 3. 15A L 250V

1

EL ECTRONIC

EL ECTRONIC CONTROLLER

CONTROLLER

ZNR

AUTO SW.

W

3

3 2

2 1

1

CS-MVG103KE / CU-MVG153KE

53

12

3

CN- MTR1( G)

E

L

O

C

R

(

C

W

W W

W

53

1

RBY

L

E

W

I

R

E

M

O

T

R

C

O

N

T

N

R

O

E

C

T

L

R

O

L

N

T

E

V

E

I

E

C

R

C

V

(

N

-

3

2

1

MOT OR

S

E

O

L

C

I

E

R

)

W

)

/G

123

TERMINAL

TO OUT DOOR UNIT

16

TERM INAL

TERM INAL COMPLETE

COMPLETE

THERMAL FUSE

102 C(3A)

CN- RCV1 ( )

SENSOR 2

(PIPE TEMP.2)

CN- STM1 (W)

2435

1

2435

1

O

P

CN-PWR1( B)

REMARKS

REMARKS B : BL UE BR:BROWN W : WHI T E G:GREEN

B : BL UE BR:BROWN W : WHI T E G:GREEN P : PINK Y: YELLOW O : ORANGE

P : PINK Y: YELLOW O : ORANGE BL : BL ACK R: RED Y/ G : YEL LOW/GREEN

BL : BL ACK R: RED Y/ G : YEL LOW/GREEN

P

MOTOR

LOUVER

CN- DI SP2(W)

CN-DISP1(W)

DISPLAY, SEL F - DIAGNOSIS

DISPLAY, SEL F - DIAGNOSIS POW E R MONITO R DISPLAY

POW E R MONITO R DISPLAY

BRR

Y

BRR

Y

15

65

4

321

6789

798

65

798

WWWW

W

12345

6

5

4

321

CN -TH1 (W)

(PIPE TEMP.2)

SENSOR 1

( PI PE T EMP. 1)

SEN SOR

(AIR TEMP.)

13

C

CS-MVG103KE / CU-MVG153KE

7.2. CU-MVG153KE ( OUTDOOR UNIT )

230V/50Hz SINGLE PHASE

1

BL

FUSE

250V/ 20A

BL

GG

6 7 9

8

1110

BR

-

+

CAPACITOR

OR

R BL

Y

B

THE PRENTHESIZED LETTER IS INDICATED ON TERM I NAL COVER.

R

TRADE MARK

COMP. TERMINAL

R

U

B

V

Y

OMPRESSER

W

TERMINAL

2

WH

B

BL

420V 750 F

R

CAPACITOR

WH

REACTOR

251

43

175V 45 F

BL

-

+

420V 750 F

R

N

P

TO

INDOOR UNIT A

TERMINAL TERMINAL

1

2

3

BL

B

NOISE

FILTER

(BLUE)

(BLACK)

WH

B

BR

-

PTC

AC9

(BROWN)

Y

DIODE

+

SENSOR AI R T EMP.

SENSOR PI PE T EMP.

SENSOR COMP. TEMP.

SENSOR PIPE TEMP.

CN-V

CN- U

(BLUE)

(RED)

31

R

31

31 CN- U

CN-V

(RED)

(BLUE)

(YELLOW)

1

PBLB

(YELL OW)

CN- W

Y

3131

CN- W

AC10

(YELLOW)

V

TRANSISTOR COMPLETE

TO

INDOOR UNIT B

123

BL

AC1

AC2

AC3

(GRAY)

GR

(WHITE)

1 2 3 4

GR

1

GR

2

1 3

CN-L

(WHITE)

ORYBRRGRPV

GR

421 CN-L

(WHITE)

CN- ROOM B

(GREEN)

FUSE T5. 0A

L250V

+

AC5

RY- AC

L

P

RY- PWR

L

P

RY- L

CN- TH1

(YELLOW)

CN- TANK (BLUE)

EL ECT RONIC CONTROL UNIT

CN- T H2

(GREEN)

CN- PW M (WHIT E)

78654312431

B

876543 1

CN-PWM (WHIT E)

2

OR

2

B: BLUE BL : BL ACK BR: BROWN

G: GREEN

R: RED

WH: WHITE

Y: YELL OW

RBL

WH OR GR

1

FUSE T3. 15A

L250V

CT

CR101

RY- HOT

CR102

RY- 2CV

CR103

CN-DIS

(WHITE)

BR

31

SENSOR

PIPE TEMP.

CN-TH3 (YELLOW )

REMARKS

1

CN- HOT (YELL OW)

CN- 2 CV (WHITE)

C- FM

CN - F M

(GREEN)

31

SENSOR

AIR T EMP.

GR: GRAY OR: ORANGE P: PINK V: VIOLET

CN-ROOM A

(BLUE)

33

BL

1

BL

3

(4-WAY

B

1

B

3

(2-WAY

Y

5

R

3

B

1

1 2 3 4 5 6

CN- EVA(WHITE)

EXP.

1 2 3 4 5 6

CN-EVB(YELLOW)

EXP. VALVE

COIL

MOT E R

OR R Y BL GR

VALVE)

FAN

COIL

EXP.

VALVE

COIL

EXP.

VALVE

Resistance of Outdoor Fan Motor Windings

CONNECTION YELLOW -RED

YELLOW - BLUE

CWA951029

257.2

265.2

( )

Resistance of Compressor Windings

CONNECTION

U-V U-W V-W

( )

1.0

14

8 Operation Details (FUNCTIONS)

8.1. SIMULTANEOUS OPERATION CONTROL

CS-MVG103KE / CU-MVG153KE

15

CS-MVG103KE / CU-MVG153KE

8.2. TEMPERATURE SHIFT

Once the operation starts, the remote control setting temperature will be shifted internally based on the setting fan speed and outdoor air temperature. In addition, if Sleep Mode or Powerful Mode are set, the temperature shift will be carried out.

Setting of internal Setting Temperature The internal setting temperature can be decided as follows:

8.2.1. Table a

Setting Temperature Shift based on outdoor air temperature.

1. Cooling, Soft Dry 2. Heating

8.2.2. Table b

Setting Temperature Shift based on fan speed.

Remote control setting fan speed Cooling Dry Heating

Lo +1.0°C +1.0°C +1.0°C

Me-, Me, Me+, Auto fan speed +1.0°C +1.0°C

Hi +1.0°C +1.0°C

8.2.3. Table c

Powerful Mode Shift

Cooling Dry Heating

Powerful -4.0°C -3.0°C +6.0°C

16

CS-MVG103KE / CU-MVG153KE

8.3. COMPRESSOR OPERATING FREQUENCY OPERATION

Compressor Operation Frequency According to Comp. Operation Frequency Command Number(INDOOR UNIT)

8.3.1. Cooling & Soft Dry

(Unit : Hz)

Comp.

Operation Frequency Command Number of

Indoor Unit B

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 0 15 15 15 15 15 22 30 39 45 47 65 67 67 67 67 1 30 30 39 43 45 47 50 52 56 57 61 61 61 61 61

15

2 30 30 39 43 45 47 50 52 56 57 61 61 61 61 61

15

3 39 39 41 45 47 48 52 54 57 59 63 63 63 63 63

15 4 15 5 15 45 45 47 50 52 54 57 59 63 65 68 68 68 68 68 6 22 47 47 48 52 54 56 59 61 65 67 70 70 70 70 70 7 30 50 50 52 56 57 59 63 65 68 70 74 74 74 74 74 8 39 52 52 54 57 59 61 65 67 70 72 75 75 75 75 75 9 45 56 56 57 61 63 65 68 70 74 75 75 75 75 75 75

10 47 57 57 59 63 65 67 70 72 75 75 76 76 76 76 76 11 65 61 61 63 67 68 70 74 75 75 76 77 77 77 77 77 12 67 61 61 63 67 68 70 74 75 75 76 77 77 77 77 77 13 67 61 61 63 67 68 70 74 75 75 76 77 77 77 77 77 14 67 61 61 63 67 68 70 74 75 75 76 77 77 77 77 77 15 67 61 61 63 67 68 70 74 75 75 76 77 77 77 77 77

43 43 45 48 50 52 56 57 61 63 67 67 67 67 67

Rated and Maximum Operation frequency

Fc (10) 47 75

Fc max (15) 67 77

8.3.2. Heating

Comp.Operation Frequency Command Number of Indoor Unit A

Compressor Operation Frequency (Hz)

One Indoor Unit Operation Two Indoor Units Operation

(Unit : Hz)

Comp.

Operation Frequency Command Number of

Indoor Unit B

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 0 15 25 35 45 55 55 65 69 74 75 93 106 118 118 118 1 15 45 55 65 69 71 72 74 75 77 77 78 81 83 83 83 2 25 55 65 69 71 72 74 75 77 78 78 80 83 84 84 84 3 35 65 69 71 72 74 75 77 78 80 80 81 84 86 86 86 4 45 69 71 72 74 75 77 78 80 81 81 83 86 87 87 87 5 55 71 72 74 75 77 78 80 81 83 83 84 87 89 89 89 6 55 72 74 75 77 78 80 81 83 84 84 86 89 90 90 90 7 65 74 75 77 78 80 81 83 84 86 86 87 90 92 92 92 8 69 75 77 78 80 81 83 84 86 87 87 89 92 93 93 93 9 74 77 78 80 81 83 84 86 87 89 89 90 93 94 94 94

10 75 77 78 80 81 83 84 86 87 89 90 92 93 100 100 100 11 93 78 80 81 83 84 86 87 89 90 92 93 94 106 106 106 12 106 81 83 84 86 87 89 90 92 93 93 94 106 112 112 112 13 118 83 84 86 87 89 90 92 93 94 100 106 112 125 125 125 14 118 83 84 86 87 89 90 92 93 94 100 106 112 125 125 125 15 118 83 84 86 87 89 90 92 93 94 100 106 112 125 125 125

Rated and Maximum Operation frequency

Fh (10) 75 90

Fh max (15) 118 125

Comp.Operation Frequency Command Number of Indoor Unit A

Compressor Operation Frequency (Hz)

One Indoor Unit Operation Two Indoor Units Operation

17

CS-MVG103KE / CU-MVG153KE

8.4. COOLING OPERATION

8.4.1. Room Temperature Control

1. When the remote control setting temperature is less than 24°C.

Refer to8.3.2. Compressor Operation Frequency

2. When the remote control setting temperature is 24°C and above.

Refer to8.3.1. Compressor Operation Frequency

· Thermostat OFF temperature = Thermostat ON temper ature.

· The Comp. Operation Frequency Command can be changed every 30 seconds.

· 30 minutes from the start of the operation, the compressor is operating at Fc max.

· The Thermostat OFF when the intake air temperature reaches 1°C below internal setting temperature and continues for 3

minutes.

· When the Thermostat of both Indoor Units OFF, the Compressor stops.

· When the compressor stops, it will not begin operation for 3 minutes. (Time Delay Safety Control)

· When the intake air temperature reaches the Compressor ON temperature, the Compressor starts operation.

· When the compressor stops, the outdoor fan motor stops 30 seconds later.

18

CS-MVG103KE / CU-MVG153KE

8.4.2. Deodorizing Control

· This control is available during automatic fan speed for Cooling and Soft Dry Operation. It is not available during anti-freezing control.

· When the Thermostat ON operation, the deodorizing status starts from 1 → 2 → 3.

· When the Thermostat OFF operation, the deodorizing status starts from 4 → 5 → 6 → 7.

· If the Thermostat OFF operation after 3 minutes, the deodorizing status will start from 6.

8.4.3. Sensible Heat Control

· This control is to improve the feeling in high fan speed during low Comp. Operation Frequency Command Number. When the Comp. Operation Frequency Command Number is less than 4, the fan speed will reduce. When the Comp. Operation Frequency Command Number is above 5 continuously for 5 minutes, the fan speed will resume to normal condition.

19

CS-MVG103KE / CU-MVG153KE

8.5. SOFT DRY OPERATION

8.5.1. Room Temperature Control

At the start of operation, cooling operation is running until the intake air temperature is 0.5°C higher than internal setting temperature, then the operation will shift to Soft Dry with indoor fan speed SLo.

Refer to8.3.1. Compressor Operation Frequency

· Thermostat OFF temperature = Thermostat ON temper ature.

· The Comp. Operation Frequency Command can be changed every 30 seconds.

· 30 minutes from the start of the operation, the compressor is operating at Fc max.

· The Thermostat OFF when the intake air temperature reaches 1°C below internal setting temperature and continues for 3

minutes.

· When the Thermostat of both Indoor Units OFF, the Compressor stops.

· When the compressor stops, it will not begin operation for 3 minutes. (Time Delay Safety Control)

· When the intake air temperature reaches the Compressor ON temperature, the Compressor starts operation.

· When the compressor stops, the outdoor fan motor stops 30 seconds later.

8.5.2. Deodorizing Control

· This control is available during automatic fan speed for Cooling and Soft Dry Operation. It is not available during anti-freezing control.

· When the Thermostat ON operation, the deodorizing status starts from 1 → 2 → 3.

· When the Thermostat OFF operation, the deodorizing status starts from 4 → 5 → 6 → 7.

· If the Thermostat OFF operation after 3 minutes, the deodorizing status will start from 6.

8.5.3. Sensible Heat Control

· This control is to improve the feeling in high fan speed during low Comp. Operation Frequency Command Number. When the Comp. Operation Frequency Command Number is less than 4, the fan speed will reduce. When the Comp. Operation Frequency Command Number is above 5 continuously for 5 minutes, the fan speed will resume to normal condition.

20

CS-MVG103KE / CU-MVG153KE

8.6. HEATING OPERATION

8.6.1. Room Temperature Control

· During heating operation, the room temperature control depends on intake air temperature and internal setting temperature. Basically it can be divided into 2 periods as shown below:

1. When indoor fan speed is Medium or above.

Refer to8.3.2. Compressor Operation Frequency

2. When indoor fan speed is lower than Medium.

Refer to8.3.2. Compressor Operation Frequency

21

CS-MVG103KE / CU-MVG153KE

· Thermostat OFF temperature = Thermostat ON temper ature.

· The operation frequency changes every 30 seconds.

· When the difference of the intake air temperature and Internal setting temperature is -1.5°C or more, compressor will operate

at Fh continuously for 3 minutes and then change over to Fh max.

· The Thermostat OFF when the intake air temperature reaches 1.5°C above internal setting temperature and continues for 3 minutes.

· When the Thermostat of both Indoor Units OFF, the Compressor stops.

· When the compressor stops, it will not start operation for 3 minutes. (Time Delay Safety Control)

· When the intake air temperature decreases to the compre ssor ON temperature, the compressor starts immediately.

· When the compressor stops, the outdoor fan motor stops 30 seconds later.

8.6.2. Anti Cold Draft Control

1. Indoor Fan Control Indoor fan speed and airflow direction varies in accordance to the indoor heat exchanger temperature as shown below: a. Manual Fan speed control

b. Auto Fan speed control

Note:

· UP means fan speed is increased by 1 rank.

· DOWN means fan speed is decreased by 1 rank.

· Max means fan speed is running at maximum auto fan speed.

22

CS-MVG103KE / CU-MVG153KE

2. Hot Start

· At the start of heating operation, the indoor fan stops and Comp. Operation Frequency Command Number at Fh max. This is to heat up the indoor heat exchanger in order to avoid cold air discharged.

· Hot Start ends when

a. Indoor heat exchanger temperature reaches over 15°C

or

b. 4 minutes after heating operation starts

· After Hot Start operation, Comp. Operation Frequency Command Number at Fh max for 2 minutes.

8.6.3. Standby Control

1. The purpose of Standby Control is to warm up the compressor when outdoor temperature is low. the standby control will be activated when all of the followings occur.

· Unit is not operating.

· Compressor temperature is below 7°C.

2. When the standby control is activated, low electricity will be supplied to compressor for 3 minutes and stops for 7 minutes. This condition is repeated until standby control is cancelled.It will consume about 35W of electric power.

3. Standby control will be cancelled when one of the following conditions occurs.

· Unit starts operation.

· Compressor temperature is over 9°C.

4. When the unit is switched on by the remote control, the compressor operates at frequency as shown in below:-

5. The standby control can be cancelled by cutting off the jumper wire on the outdoor electronic controller.

8.6.4. Deice Operation

Deice operation occurs when the deice operation starting signal is generated. This happens when one of the following conditions occurs. However, the first deice operation will begin 1 hour after start of heating operation.

Note:

The above 4 cases are under compressor operating condition.

23

CS-MVG103KE / CU-MVG153KE

Deice Operation Time Chart

· Compressor frequency is set at 40Hz when the deice operation starting signal is generated.

· 120 seconds later deice operation starting signal is generated, indoor fan, outdoor fan, 4-way valve are turned off and

compressor operates at 61Hz for 30 seconds. (Deice operation starts)

· During deice operation, the compressor operating frequency is set at 85Hz.

· Deice will end when the outdoor heat exchanger temperature rises to 13°C or after 11 min 30sec.

24

CS-MVG103KE / CU-MVG153KE

8.7. FAN OPERATION

This operation is to enable the fan operation without compressor running. Timer operation is valid for fan operation.

8.8. AUTOMATIC OPERATION

When the Automatic mode is selected, the operation mode is decided in accordance to remote control setting temperature, intake air temperature and outdoor air temperature.

· During judging the operati on mode, indoor fan is running at Lo-speed and outdoor fan at ON in order to sense the indoor intake air temperature and outdoor air temperature for 20 seconds. At this time, Power LED is blinking. After the operation mode is selected, Power LED light up.

There are 4 determination charts when automatic mode is selected.

25

CS-MVG103KE / CU-MVG153KE

Setting temp °C T1 T2 T3 18 and below +10 +8 -5 19 - 22 +8 +7 -7 23 - 26 +7 +6 -7 27 and above +6 +5 -8

Note:

Base temperature for T1 is 29 °C Base temperature for T2 is 27 °C Base temperature for T3 is 21 °C

· When the operation mode is changed over, the value for t1, t2 and t3 are shifted as follows: Cooling/Soft dry → Heating: -2°C Heating → Cooling/Soft dry: +2°C

· When the indoor intake air temperature is lower than 16°C, heating operation is immediately started.

· When the outdoor air temperature is more than 25°C, and the intake air temperature is over 16°C, cooling operation is

immediately started.

· The operation mode is judged every 3 hours.

8.8.1. Temperature Shift

· When the operation mode (Heating, Cooling or Soft Dry) is decided, the internal setting temperature will shift as shown below:

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8.9. INDOOR FAN SPEED CONTROL

CS-MVG103KE / CU-MVG153KE

Fan

speed

no.

0 OFF OFF OFF OFF OFF 2 13.0 SLO

3 13.7 Lo-

6 16.0 Lo

8 18.2 Lo

9 19.1

10 20.6 Me-

11 21.5 Auto

12 21.8 Me

13 22.7 Auto

14 23.6

15 23.9 Auto

16 24.5 17 25.1 19 26.0 Me+ 21 26.6

22 27.2 Hi

27 29.5 28 29.9

30 33.2 SHI

31 33.8

Voltage

Supply to

Fan Motor

DC(V)

Cooling Soft

Manual Auto MAnual Auto

Fan

Dry

·

Remarks Heating Remarks

Deodorizing control Sleep Mode

Auto operation mode judgement

Quiet operation

Sensible Heat Control On Timer preparatory

operation + Auto Fan

Manual Fan + Powerful On Timer preparatory