Fujitsu AB30LBAG series, AB36LBAG series, AO45LJBYL series, AB45LBAG series, AO*30LMBWL series Service Instruction

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SPLIT TYPE ROOM AIR CONDITIONER

Large Ceiling

type

Models Indoor unit Outdoor unit

AB*30LBAG AB*36LBAG AB*45LBAG

AO*30LMBWL AO*36LMBWL AO*45LJBYL

INVERTER

SERVICE

INSTRUCTION

R410A

CONTENTS

1. SPECIFICATIONS

SPECIFICATIONS.......................................................................................................... 01-01

2. DIMENSIONS

DIMENSIONS.................................................................................................................. 02-01

3. REFRIGERANT SYSTEM DIAGRAM

REFRIGERANT CIRCUIT............................................................................................... 03-01

4. CIRCUIT DIAGRAM

CIRCUIT DIAGRAM........................................................................................................ 04-01

5. DESCRIPTION OF EACH CONTROL OPERATION

5-1-1 COOLING CAPACITY CONTROL......................................................................

5-1 COOLING OPERATION............................................................................................

5-4 AUTO CHANGEOVER OPERATION........................................................................

5-5 INDOOR FAN CONTROL.........................................................................................

5-6 OUTDOOR FAN CONTROL......................................................................................

5-7 LOUVER CONTROL.................................................................................................

05-01

5-2-1 HEATING CAPACITY CONTROL......................................................................

5-2 HEATING OPERATION.............................................................................................

05-02

5-3-1 INDOOR UNIT CONTROL.................................................................................

5-3 DRY OPERATION......................................................................................................

05-03

05-04

05-05

05-07

05-08

5-8 COMPRESSOR CONTROL......................................................................................

05-10

5-9 TIMER OPERATION CONTROL...............................................................................

05-11

5-10 ELECTRONIC EXPANSION VALVE CONTROL....................................................

05-13

5-11 TEST OPERATION CONTROL...............................................................................

05-13

5-12 PREVENT TO START FOR 3 MINUTES (3 MINUTES ST)....................................

05-13

5-13 4-WAY VALVE EXTENSION SELECT....................................................................

05-13

5-14 AUTO RESTART.....................................................................................................

05-13

5-15 PUMP DOWN (Refrigerant collecting operation).................................................

05-14

5-16 COMPRESSOR PREHEATING...............................................................................

05-14

5-17 DEFROST OPERATION CONTROL.......................................................................

05-14

5-19 VARIOUS PROTECTIONS......................................................................................

05-16

5-18 MANUAL AUTO OPERATION................................................................................

05-16

6. REFRIGERANT CAUTION -R410A-

6-1 R410A TOOLS............................................................................................................ 06-01

6-2 PRECAUTION FOR INSTALLATION.........................................................................

06-02

6-3 PRECAUTION FOR SERVICING...............................................................................

06-04

6-4 NEW REFRIGERANT R410A.....................................................................................

06-05

6-5 DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS.......

06-08

8. APPENDING DATA

9. INSTALLATION MANUAL

8-1 CAPACITY TABLE..................................................................................................... 08-01

8-2 OPERATION RANGE.................................................................................................

08-02

8-3 ELECTRIC CHARACTERISTICS...............................................................................

08-03

8-4 SAFETY DEVICE........................................................................................................

08-04

8-5 FUNCTION SETTING.................................................................................................

08-05

7-1-2 OUTDOOR UNIT DISPLAY................................................................................

7-1-1 INDOOR UNIT DISPLAY....................................................................................

7-1 ERROR DISPLAY......................................................................................................

7. TROUBLE SHOOTING

7-2 TROUBLE SHOOTING WITH ERROR CODE..........................................................

7-3 TROUBLE SHOOTING WITH NO ERROR CODE....................................................

7-4 SERVICE PARTS INFORMATION............................................................................

07-01

8-5-1 INDOOR UNIT....................................................................................................

08-05

8-5-2 OUTDOOR UNIT (AO*30/ 36LMBWL)................................................................

08-07

8-5-3 OUTDOOR UNIT (AO*45LJBYL)........................................................................

08-09

07-02

07-21

07-03

07-26

1-1-1 PARTS LAYOUT DRAWING...............................................................................

1-1-2 WIRING................................................................................................................

1-1-3 DISASSEMBLY PROCESS.................................................................................

1-1 For AO*30/ 36LMBWL.............................................................................................

1 REPLACEMENT PARTS ( For OUTDOOR UNIT ).......................................................

10. REPLACEMENT PARTS

10-01

10-01 10-01

10-04

10-03

2-1 PARTS LAYOUT DRAWING...................................................................................

2 REPLACEMENT PARTS ( For INDOOR UNIT )........................................................... 10-29

10-29

1-1-4 ASSEMBLY PROCESS of INVERTER UNIT.......................................................

10-09

1-2-1 PARTS LAYOUT DRAWING...............................................................................

1-2-2 WIRING................................................................................................................

1-2-3 DISASSEMBLY PROCESS.................................................................................

1-2-4 ASSEMBLY PROCESS of INVERTER UNIT......................................................

1-2 For AO*45LJBYL.....................................................................................................

10-14 10-14

10-18

10-16

10-24

1 . SPECIFICATIONS

R410A

INVERTER

Large Ceiling type

01-01

1. SPECIFICATIONS

AB 30LBAG AB 36LBAG

AO 30LMBW L AO 36LMBW L

EUROPEAN ENERGY LABEL COOLING C E

kW 8.50/10.00 10.0/11.20

BTU/h 29000/34100 34100/38200

kW 10.00/11.20 10.8/12.77

BTU/h 34100/38200 36900/43600

COOLING RATED/MAX 3.00/3.45 4.12/4.35

HEATING RATED/MAX 2.90/3.50 3.26/4.15

COOLING RATED/MAX 13.1/15.2 18.0/18.4

HEATING RATED/MAX 12.7/15.3 14.2/18.8

A 10 10

EER COOLING 2.83 2.43

COP HEATING 3.45 3.31

l/h (pints/h) 2.5 ( 5.3 ) 3.0 ( 6.3 )

High 1660 / 1660 1850 / 1850

Med 1500 / 1450 1660 / 1500

Low 1270 / 1150 1430 / 1270

Quiet

High

Low

High 1000 / 1000 1100 / 1100

Med 900 / 850 1000 / 900

Low 750 / 650 850 / 750

Quiet

High

Low

INDOOR

OUTDOOR

INDOOR

OUTDOOR

High 45.0 / 45.0 48.0 / 48.0

Med 42.0 / 42.0 45.0 / 45.0

Low 37.0 / 37.0 41.0 / 41.0

53.0 / 55.0 54.0 / 55.0

OUTPUT W

Rows × Stages

Fin Pitch

Coil Dimensions

Rows × Stages

Fin Pitch

Coil Dimensions

INDOOR

OUTDOOR

INDOOR

OUTDOOR

INDOOR

OUTDOOR

INDOOR

OUTDOOR

LIQUID

GAS

CHARGE g

COOLING

HEATING

Note: Specifications are based on the following conditions. Cooling: Indoor temperature of 27 °CDB / 19 °CWB,and outdoor temperature of 35 °CDB/24 °CWB. Heating: Indoor temperature of 20 °CDB / 15 °CWB,and outdoor temperature of 7 °CDB/6 °CWB. Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)

CEILING MODELS

INVERTER HEAT PUMP

230V 50Hz

STARTING METHOD

FAN TYPE x Q'ty

FAN MOTOR OUTPUT

COMPRESSOR

TYPE

FAN SPEED COOL/HEAT

DRAIN PIPE

kg(lbs)

MATERIAL

SIZE

CONNECTION METHOD

SIZE

WEIGHT

NET / GROSS

MAX HEIGHT

HEAT EXCHANGER TYPE

INDOOR

Coil

OUTDOOR

Coil

Fin

PIPE

REFRIGERANT REMOTE CONTROLLER TYPE

OPERATION(OUTDOOR)

°C

REFRIGERANT OIL

TYPE

MAX LENGTH

CASING COLOR

DIMENSIONS H × W × D NET

dB(A)

OUTDOOR

GROSS

NOISE LEVEL (SOUND PRESSURE)

COOL/HEAT

INDOOR

Fin

INDOOR

r.p.m

OUTDOOR STARTING CURRENT

kW/kW

MOISTURE REMOVAL

AIR CIRCULATION COOL/HEAT

INDOOR

m3/h

OUTDOOR

INPUT POWER

CURRENT

POWER SOURCE

AVAILABLE VOLTAGE RANGE

CAPACITY

COOLING

RATED/MAX

HEATING

RATED/MAX

TYPE

MODEL NAME

INDOOR

OUTDOOR

198-264V 50Hz

3600 / 3800

850 / 900

SIROCCO × 4

PROPELLER × 1

160

103

DC TWIN ROTARY (INVERTER)

1300

Inverter

Copper tube

Aluminium

3 × 12

1.45

252 × 1350 × 39.9

Copper tube

Aluminium

2 × 38

1.3

798 × 900 × 36.38

White (5Y9/0.5NN)

Beige (10YR7.5/1.0NN)

240 × 1660 × 700

830 × 900 × 330

318 × 1800 × 790

970 × 1050 × 445

48 / 61 ( 106 / 134 )

64 / 70 ( 141 / 154 )

FLARE

9.52 ( 3 / 8 inc.)

15.88 ( 5 / 8 inc.)

50 (chargeless:15)

R410A

2200

ABS

Outer diameter 25.6 / Inner diameter 22.0

POE

-10 to 43

-10 to 24

WIRELESS

01-02

CEILING MODELS

INVERTER HEAT PUMP TYPE

AB 45LBAG

AO 45LJBYL

230V 50Hz

198-264V 50Hz

kW 12.5/14.0

BTU/h 42700/47800

kW 14.0/16.0

BTU/h 47800/54600

COOLING RATED/MAX 4.45/5.15

HEATING RATED/MAX 4.25/4.60

COOLING RATED/MAX 19.5/22.6

HEATING RATED/MAX 18.5/20.0

A 15

COOLING 2.81

HEATING 3.29

l/h (pints/h) 4.0(8.5)

High 2000/2000

Med 1850/1850

Low 1590/1590

Quiet -

High 6600/6600

Low -

High 1200/1200

Med 1100/1100

Low 950/950

Quiet -

High Upper fan : 850 , Lower fan : 750

Low -

INDOOR Sirocco × 4

OUTDOOR Propeller × 2

INDOOR 160

OUTDOOR 103 × 2

High 50/50

Med 47/47

Low 43/43

52/53

DC SCROLL(INVERTER)

OUTPUT W 2500

Inverter

Copper tube

Aluminium

3 × 12

Fin Pitch

1.45

Coil Dimensions

252 × 1350 × 39.9

Copper tube

Aluminium

2 × 60

Fin Pitch

1.3

Coil Dimensions

1260 × 900 × 36.38

INDOOR White(5Y9/0.5NN)

OUTDOOR Beige(10YR7.5/1.0NN)

INDOOR 240 × 1660 × 700

OUTDOOR 1290 × 900 × 330

INDOOR 318 × 1800 × 790

OUTDOOR 1430 × 1050 × 445

INDOOR 48/61 (106/134)

OUTDOOR 105/112 (231/247)

FLARE

LIQUID

9.52(3/8 inc.)

GAS

15.88(5/8 inc.)

m 70 (chargeless:20)

m 30

R410A

CHARGE g 3400

POE

COOLING

-15 to 43

HEATING

-15 to 24

WIRELESS

ABS

Outer diameter 25.6 / Inner diameter 22.0

Note:

Specifications are based on the following conditions.

Cooling: Indoor temperature of 27 °CDB / 19 °CWB,and outdoor temperature of 35 °CDB/24 °CWB. Heating: Indoor temperature of 20 °CDB / 15 °CWB,and outdoor temperature of 7 °CDB/6 °CW B. Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)

DRAIN PIPE MATERIAL

SIZE

WEIGHT

AIR CIRCULATION COOL/HEAT

m3/h

dB(A)

INDOOR

OUTDOOR

r.p.m

COMPRESSOR FAN TYPE x Q'ty

Rows x Stages

PIPE

SIZE

CONNECTION METHOD

MAX HEIGHT

MAX LENGTH

OUTDOOR

FAN MOTOR OUTPUT

STARTING METHOD

FAN SPEED COOL/HEAT

NOISE LEVEL (SOUND PRESSURE)

COOL/HEAT OUTDOOR

INDOOR

Coil

CURRENT MOISTURE REMOVAL

INDOOR

TYPE

INDOOR

kW/kW

EER

COP

STARTING CURRENT

INDOOR

OUTDOOR

HEATING

INPUT POWER

TYPE

MODEL NAME POWER SOURCE

COOLING

RATED/MAX

AVAILABLE VOLTAGE RANGE

CAPACITY

RATED/MAX

DIMENSIONS H × W × D

OUTDOOR

Coil

Fin

HEAT EXCHANGER TYPE

Fin

Rows x Stages

CASING COLOR

NET

GROSS

kg(lbs)

NET / GROSS

REMOTE CONTROLLER TYPE

TYPE

REFRIGERANT OIL

REFRIGERANT TYPE

OPERATION(OUTDOOR)

°C

2 . DIMENSIONS

R410A

INVERTER

Large Ceiling type

02-01

MODEL : AB*30/ 36LBAG

MODEL : AO*30/ 36LMBWL

(Unit : mm)

900

830

196

31 330

400

170

147

Top view

Front view

Side view

2. DIMENSIONS

Rear view

Side view

Bottom view

(Unit : mm)

30 30

Suspension bolt pitch

1,600

INDOOR UNIT (TOP VIEW)

10 155

300

INDOOR UNIT

Suspension bolt should extend outward 30 to 75.

Refrigerant piping flare connection (Gas)

Refrigerant piping flare connection (Liquid)

Drain piping connection (Drain pipe : I.D. 22 O.D. 25.6)

Knock out hole for fresh air

Knock out hole for refrigerant piping

Hole for lifting bolt (Use M10 screw bolt)

02-02

MODEL : AB*45LBAG

MODEL : AO*45LJBYL

(Unit : mm)

900

1290

77 31

400

151

196

170

330

Top view

Side view

Front view

Rear view

Side view

Bottom view

(Unit : mm)

30 30

Suspension bolt pitch

1,600

INDOOR UNIT (TOP VIEW)

10 155

300

INDOOR UNIT

Suspension bolt should extend outward 30 to 75.

Refrigerant piping flare connection (Gas)

Refrigerant piping flare connection (Liquid)

Drain piping connection (Drain pipe : I.D. 22 O.D. 25.6)

Knock out hole for fresh air

Knock out hole for refrigerant piping

Hole for lifting bolt (Use M10 screw bolt)

3 . REFRIGERANT SYSTEM DIAGRAM

R410A

INVERTER

Large Ceiling type

03-01

Ø15.88mm(5/8")

Ø9.52mm(3/8")

MODEL : AB*30/ 36LBAG / AO*30/ 36LMBWL

Outdoor Unit Indoor Unit

CONDENSER

HIGH PRESSURE SWITCH

PRESSURE CHECK VALVE

THO

THC

THPO

THD

THR

THPI

THD

THC

THPO

COMPRESSOR

ACCUMULATOR

EXPANSION VALVE

STRAINERSTRAINER

4-Way valve

THERMISTOR(DISCHARGE TEMP.)

THERMISTOR(ROOM TEMP.)

THERMISTOR(PIPE TEMP.)

THERMISTOR(OUTDOOR TEMP.)

THERMISTOR(PIPE TEMP.)

THERMISTOR(COMP TOP TEMP.)

Refrigerant Pipe

COOL HEAT

EVAPOLATOR

Charging Valve

3. REFRIGERANT CIRCUIT

03-02

Ø15.88mm(5/8")

Ø9.52mm(3/8")

MODEL : AB*45LBAG / AO*45LJBYL

Outdoor Unit Indoor Unit

CONDENSER

HIGH PRESSURE SWITCH

PRESSURE CHECK VALVE

THO

THC

THPO

THD

THR

THPI

THR

THPI

THD

THC

THPO

COMPRESSOR

ACCUMULATOR

EXPANSION VALVE

STRAINER

STRAINER STRAINER

4-Way valve

THERMISTOR(DISCHARGE TEMP.)

THERMISTOR(ROOM TEMP.)

THERMISTOR(PIPE TEMP.)

THERMISTOR(OUTDOOR TEMP.)

THERMISTOR(PIPE TEMP.)

THERMISTOR(COMP TOP TEMP.)

Refrigerant Pipe

COOL HEAT

EVAPOLATOR

Charging Valve

MUFFLER

4 . CIRCUIT DIAGRAM

R410A

INVERTER

Large Ceiling type

04-01

MODEL : AB*30/ 36/ 45LBAG

THERMISTOR(PIPE TEMP.)

THERMISTOR(ROOM TEMP.)

FAN MOTOR CAPACITOR

FAN MOTOR

STEP MOTOR (UP / DOWN)

STEP MOTOR (LEFT / RIGHT)

BROWN

RED

GRAY

BLACK

WHITE

RED

BLACKBLACK

BLACK

ORANGE

YELLOW

WHITE

BROWN

RED

ORANGE

YELLOW

WHITE

BLACK

BLUE

PURPLE

GRAY

BROWN

RED

ORANGE

YELLOW

WHITE

GREEN

WHITE

1 2 3 4 5

1 2 3 4 5 6 7 8

1 2 3

1 2

1 2 3 4 5

1 2 3

2 1 3

1 2 3 4 5

1 2

1 2 1 2

3 2 1

1 2

CN4

CN10

CN15CN13CN16CN5

CN11

CN7CN6

CN1

CN201

CN8

CONTROL BOARD

DISPLAY BOARD

FILTER

BOARD

Use T 3.15A 250V Fuse on F101

4. CIRCUIT DIAGRAM

TO OUTDOOR UNIT

TERMINAL

3 2 1

04-02

MODEL : AO*30/ 36LMBWL

CN21

U W305

V W304

W W303

CN22 CN23 CN26 CN25

CN37

CN30

CN800

CN27

CN1

TM102

TM101

CN34

W6W3 W7 W4 W5

CN407

W12 W13

W21 W22

W200

W16 W17

W10 W11

1 2

1 2 3 4 1 2 3

1 2 3

1 2 1 2 1 2 1 2

BLACK

WHITE

GREEN

1 2(N) 3 L N

TO INDOOR UNIT

TO POWER SUPPLY

1 2

1 2 3

1 2 3 4 5 6 7

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4 5 6

FUSE F4 T 5A 250V

FUSE F2 T 3.15A 250V

PRINTED CIRCUIT BOARD (MAIN)

RED

BLACK

BROWN

BLUE

BLACK

BROWN

BLACK

BLACK WHITE

WHITE

YELLOW

BROWN

BROWN BLUE ORANGE

RED

BLACK

WHITE

BLACK

ORANGE

BROWN RED

REDRED

WHITEWHITE

BLACKBLACK

ORANGE

YELLOW

BLUE

WHITE

BROWN

ORANGE

RED

BLACK

BROWN

RED

4WV

HIGH PRESSURE SW

SOLENOID COIL

EXPANSION VALVE COIL

FAN MOTOR

THERMISTOR

(HEAT SINK)

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

PRINTED CIRCUIT BOARD (FILTER)

EARTH

FUSE

10A

FUSE

25A

POSISTOR

TERMINAL

CHOKE COIL

ACTIVE FILTER MODULE

P N

EMI FILTER 2T

EMI FILTER 1T

CONNECTOR

COMPRESSOR

04-03

MODEL : AO*45LJBYL

CN21

U W305

V W304

W W303

CN22 CN23 CN26 CN25

CN37

CN30

CN800

CN801

CN27

CN1

TM102

TM101

CN34

W6W3 W7 W1 W2

CN407

W14 W15

W107 W108

W200

1 2

1 2 3 4 1 2 3

1 2 3

1 2 1 2 1 2 1 2

BLACK

GRAY

RED

BLACK

GRAY

BLACK

WHITE

GREEN

1 2(N) 3 L N

1 2

1 2 3

1 2 3 4 5 6 7

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4 5 6

F4 T 5A 250V F2 T 3.15A 250V

PRINTED CIRCUIT BOARD (MAIN)

RED

BLACK

BROWN

BLUE

BLACK

BROWN

BLACK

BLACK WHITE

WHITE

YELLOW

BROWN

BROWN BLUE ORANGE

RED

BLACK WHITE YELLOW BROWN

RED

BLACK

WHITE

BROWN

YELLOW

BLUE

VIOLET

BLACK

ORANGE

BROWN RED

REDRED

WHITEWHITE

BLACKBLACK

ORANGE

YELLOW

ORANGE

BLACK

BROWN

RED

4WV

HIGH PRESSURE SW

SOLENOID COIL

EXPANSION VALVE COIL

FAN MOTOR 1

FAN MOTOR 2

THERMISTOR

(HEAT SINK)

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

PRINTED CIRCUIT BOARD (FILTER)

EARTH

FUSE

10A

POSISTOR

CHOKE COIL

ACTIVE FILTER MODULE

P N

EMI FILTER 1T

EMI FILTER 2T

EMI FILTER 3T

EMI FILTER 1T

CONNECTOR

COMPRESSOR

TERMINAL

DIODE BRIDGE

RELAY

FUSE

TO INDOOR UNIT

TO POWER SUPPLY

5 . DESCRIPTION OF EACH CONTROL OPERATION

R410A

Large Ceiling type

INVERTER

5-1. COOLING OPERATION

5-1-1 COOLING CAPACITY CONTROL

A sensor (room temperature thermistor) built in the indoor unit will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is 2 degC higher than a set temperature, the compressor operation frequency will attain to maximum performance.

* If the room temperature is 2 degC lower than a set temperature, the compressor will be stopped.

* When the room temperature is between +2 degC to -2 degC of the setting temperature, the compressor frequency is controlled within the range shown in Table1. However, the maximum frequency is limited in the range shown in Figure 1 based on the fan speed mode and the outdoor temperature.

minimum frequency

maximum frequency

20Hz 20Hz 20Hz

90Hz 90Hz 92Hz

AB*30LBAG AB*36LBAG AB*45LBAG

Outdoor air temperature

A zone

31°C

B zone

C zone

D zone

Hi Me Lo

A zone

90Hz 70Hz 65Hz 55Hz 90Hz

92Hz 72Hz 60Hz 60Hz

75Hz 70Hz 65Hz

45Hz 75Hz 70Hz 65Hz 55Hz 72Hz 60Hz

45Hz 75Hz 70Hz

60Hz

53Hz

65Hz

70Hz 65Hz

70Hz

55Hz 72Hz 60Hz

65Hz

55Hz

B zone C zone D zone A zone B zone C zone

AB*30LBAG

D zone A zone B zone C zone

AB*36LBAG

D zone

AB*45LBAG

19°C

11°C

( Table 1 : Compressor Frequency Range )

( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )

05-01

Fan speed mode

5-2. HEATING OPERATION

5-2-1 HEATING CAPACITY CONTROL

A sensor (room temperature thermistor) built in the indoor unit will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is lower 3 degC than a set temperature, the compressor operation frequency will attain to maximum performance.

* If the room temperature is higher 2 degC than a set temperature, the compressor will be stopped.

* When the room temperature is between +2 degC to -3 degC of the setting temperature, the compressor frequency is controlled within the range shown in Table2. However, the maximum frequency is limited in the range shown in Figure 2 based on the outdoor temperature.

( Table 2 : Compressor Frequency Range )

( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )

05-02

Outdoor air temperature

C zone

B zone

A zone

95Hz 90Hz 80Hz 95Hz 90Hz 80Hz 92Hz 90Hz 80Hz

B zone C zone A zone B zone C zone A zone B zone C zone

AB*30LBAG

AB*36LBAG

AB*45LBAG

16°C

12°C

Limit of Maximum Frequency

minimum frequency

maximum frequency

20Hz 20Hz 20Hz

95Hz 95Hz 92Hz

AB*30LBAG AB*36LBAG AB*45LBAG

5-3. DRY OPERATION

5-3-1 INDOOR UNIT CONTROL

The compressor rotation frequency shall change according to set temperature and room temperature variation which the room temperature sensor of the indoor unit has detected as shown in the Table 3.

Room temperature

Compressor ON

Ts+1.5 degC

Ts+1 degC

Compressor OFF

Compressor

OFF

Indoor fan

air flow mode

Air flow mode : Lo

OFF

30 5 30 120 5 (sec)

180 180

( Table 3 : Compressor frequency )

( Fig.3 : Compressor Control based on Room Temperature )

( Fig.4 : Indoor Fan Control )

05-03

Operating frequency

45Hz 45Hz 30Hz

AB*30LBAG AB*36LBAG AB*45LBAG

Ts : Setting temperature

5-4. AUTO CHANGEOVER OPERATION

When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum mode from among the HEATING, COOLING and MONITORING modes. During operation, the optimum mode is automatically swiched in accordance with temperature changes. The temperature can be set between 18°C and 30°C in 1 degC steps.

When operation starts, only the indoor fan is operated for 1 minute. (Air flow mode: S- Lo) After 1 minute, depends on the room temperature and outdoor unit's operarion mode, the operation mode is selected in accordance with the table below.

( Table 4 : Operation mode selection table )

When COOLING was selected at , the same operation as COOLING OPERATION is performed.

When HEATING was selected at , the same operation as HEATING OPERATION is performed.

When the compressor was stopped for 6 consecutive minutes by the temperature control function after the COOLING or HEATING operation mode was selected at above, operation is switched to MONITORING and the operation mode is selected again.

05-04

Room temperature :TR

Operation mode

TR > Ts +2 degC

Ts +2 degC > TR

Ts +2 degC > TR > Ts -2 degC

Cooling

Monitoring

Heating

Ts : Setting temperature

5-5. INDOOR FAN CONTROL

1. Fan speed

( Table 5 : Indoor Fan Speed )

Operation mode Air flow mode Speed (rpm)

Hi 1000

850 650 200

Heating

S-Lo

2. FAN OPERATION

The airflow can be switched in 4 steps such as AUTO, LOW, MED, HIGH, while the indoor fan only runs.

05-05

Hi 1000

850 650 200

Cooling

S-Lo

Operation mode Air flow mode Speed (rpm)

Hi 1100

750

900

200

Heating

S-Lo

Hi 1100

750 200

Cooling

S-Lo

Operation mode Air flow mode Speed (rpm)

Hi 1200

1100

950 200

Heating

S-Lo

Hi 1200

1100

950 200

Cooling

S-Lo

3. COOLING OPERATION

Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 5. On the other hand, if switched in [HIGH] [LOW], the indoor motor will run at a constant airflow of [COOL] operation modes LOW, MED, HIGH,as shown in Table 5.

( Fig.5 : Airflow change - over ( Cooling : AUTO ) )

When the room temperature rises

When the room temperature drops

TR : Room temperature Ts : Setting temperature

TR-Ts > 2 degC

1 degC > TR-Ts

2 degC > TR-Ts > 1 degC

TR-Ts > 3 degC

2 degC > TR-Ts

3 degC > TR-Ts > 2 degC

HIGH mode

MED mode

LOW mode

*1 : Contains a condition to the following

When the operation mode is set to AUTO mode at the start of operation. When the setting temperature was changed. When the operation mode was changed to COOLING mode. When the airflow mode was changed to AUTO mode.

When [AUTO] is selected, the indoor fan motor runs LO and OFF at 1 minute intervals.

AB*30LBAG

AB*36LBAG

AB*45LBAG

05-06

4. HEATING OPERATION

When the airflow is set to [AUTO], the indoor fan motor operates [MED] mode. Then the indoor fan motor will run according to a room temperature, as shown in Figure 6.

On the other hand, if switched in [HIGH] [LOW], the indoor motor will run at a constant airflow of [COOL] operation modes LOW, MED, HIGH, as shown in Table 5.

5. COOL AIR PREVENTION CONTROL (Heating mode)

6. DRY OPERATION

Refer to the Figure 4. During the dry mode operation, the fan speed setting can not be changed.

47°C

41°C

SETTING FAN MODE

LO mode

S-LOW mode

33°C

30°C

Indoor heat exchanger temperature

The maximum value of the indoor fan speed is set as shown in Figure 7, based on the detected temperature by the indoor heat exchanger sensor on heating mode.

( Fig.6 : Airflow change - over ( Heating : AUTO ) )

( Fig.7 : Cool Air Prevention Control )

Hold

Go down one-step

Go up one-step

5-6. OUTDOOR FAN CONTROL

1. Outdoor Fan Motor

Following table shows the fan speed of the outdoor unit.

The outdoor fan speed changs in the range mentioned avobe depending on the compressor frequency and outdoor temperature. (When the compressor frequency and outdoor temperature increase, the outdoor fan speed also changes to the higher speed. When the compressor frequency and outdoor temperature decrease, the outdoor fan speed also changes to the lower speed.)

AB*45LBAG has two fan motors.

For AB*30/ 36LBAG It runs at 500rpm for 20 seconds after starting up the outdoor fan. When the outdoor heat exchanger tenperature is lower than 2°C, the fan speed switches to 900rpm on heating mode.

For AB*45LBAG It runs at 500rpm for 20 seconds after starting up the outdoor fan. When the outdoor heat exchanger tenperature is lower than 2°C, the fan speed switches to 850rpm(Upper fan) and 750rpm(Lower fan) on heating mode.

05-07

( Table 6 : Fan speed of the outdoor unit )

850/ 780/ 400/ 250/ 170 rpm

850/ 780/ 400/ 350/ 300 rpm

780/ 750/ 350/ 0 rpm

900/ 780/ 400/ 250/ 170 rpm

850/ 780/ 350/ 200/ 150 rpm

780/ 750/ 350/ 200/ 150 rpm

Cooling

Heating

AB*36LBAG

AB*30LBAG

AB*45LBAG

Upper fan

Lower fan

5-7. LOUVER CONTROL

1. VERTICAL LOUVER CONTROL

Each time the button is pressed, the air direction range will change as follows:

Use the air direction adjustments within the ranges shown above.

The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.

Cooling / Dry / Fan mode Horizontal flow Heating mode Downward flow

(Function Range)

(Fig.8 : Air Direction Range)

(Operation Range)

1-2. SWING OPERATION

When the swing signal is received from the remote controller, the vertical louver starts to swing. The range of swing depends on the set airflow direction.

When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position.

05-08

The indoor fan motor starts after the louver reaches to the setting position.

At the start of operation if the setting louver position is or ,the setting position is set to or after the louver moves from totally-enclosed position to . (Positioning Control)

( Stop mode means Operation stop.)

1 2 3 4

Cooling / Dry mode Heating mode Fan mode

1 2 3

(Swinging Range)

Airflow direction set

Range of swing

to to to to

2. HORIZONTAL LOUVER CONTROL

Each time the button is pressed, the air direction range will change as follows:

Cooling / Dry mode Heating mode Fan mode

Use the air direction adjustments within the ranges shown above.

The horizontal airflow direction is set automatically on after initialization.

(Function Range)

(Fig.9 : Air Direction Range)

(Operation Range)

2-1. SWING OPERATION

When the swing signal is received from the remote controller, the horizontal louver starts to swing. The range of swing depends on the set airflow direction.

When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position.

05-09

( Stop mode means Operation stop.)

1 2 3 4 5

1 2 334 5

(Swinging Range)

Airflow direction set

Range of swing

to to to to

1 5

5-8. COMPRESSOR CONTROL

1. OPERATION FREQUENCY RANGE

The operation frequency of the compressor is different based on the operation mode as

shown in Table 7.

Cooling Heating

Min Max Min Max

Dry

(Table 7 : Compressor Operation Frequency Range)

2. OPERATION FREQUENCY CONTROL AT START UP

The compressor frequency soon after the start-up is controlled as shown in Figure 10.

(Fig.10 : Compressor Control at Start-up)

Frequency

05-10

AB*30LBAG

20Hz 20Hz 20Hz

90Hz 90Hz 92Hz

AB*36LBAG AB*45LBAG

20Hz 20Hz 20Hz

95Hz 95Hz 92Hz

45Hz 45Hz 30Hz

Time A Time B Time C

Time E

Time D

Hold

(Frequency)

(Time)

Frequency

AB*30LBAG AB*36LBAG AB*45LBAG

180sec

60sec

120sec

720sec

180sec

80sec

180sec

720sec

40Hz

56Hz

70Hz

AB*30LBAG AB*36LBAG AB*45LBAG

Time A Time B Time C Time D Time E

1 Discharge pipe temp. > 30°C

2 Discharge pipe temp. < 30°C

1 Discharge pipe temp. > 35°C

2 Discharge pipe temp. < 35°C

For AB*30/ 36LBAG

For AB*45LBAG

5-9. TIMER OPERATION CONTROL

1. ON / OFF TIMER

OFF timer : When the clock reaches the set time, the air conditioner will be turned off.

Operation mode

Stop mode

Set time of timer

ON timer : When the clock reaches the set time, the air conditioner will be turned on.

Operation mode

Stop mode

Set time of timer

2. PROGRAM TIMER

05-11

AR- JW1

5-9-1 Wireless Remote Controller

ON / TIMER

OFF / TIMER

PROGRAM TIMER

SLEEP TIMER

The program timer allows the OFF timer and ON timer to be used in combination one time.

Operation mode

Operation will start from the timer setting (either OFF timer or ON timer) whichever is closest to the clock's current timer setting. The order of operations is indicated by the arrow in the remote control unit's display.

SLEEP timer operation cannot be combined with ON timer operation.

Stop mode

Operation mode

Set time

Set time Set time Set time

05-12

3. SLEEP TIMER

If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON.

Set temperature rises

( Ts : Set temperature )

Stop of operation

Set temperature lowers

( Ts : Set temperature )

Stop of operation

In the cooling operation mode

When the sleep timer is set, the setting temperature is increased 1 degC. It increases the setting temperature another 1 degC after 1 hour. After that, the setting temperature is not changed and the operation is stopped at the time of timer setting.

+1degC

+2degC

-2degC

-1degC

-4degC

-3degC

Set

60min

In the heating operation mode

When the sleep timer is set, the setting temperature is decreased 1 degC. It decreases the setting temperature another 1 degC every 30 minutes. Upon lowering 4 degC, the setting temperature is not changed and the operation stops at the time of timer setting.

Set

30min

5-10. ELECTRONIC EXPANSION VALVE CONTROL

The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the following values. The compressor frequency, the temperatures detected by the discharge temperature sensor and the outdoor temperature sensor.

The pulse range of the electronic expansion valve control is between 50 to 480 pulses.

At the time of supplying the power to the outdoor unit, the initialization of the electronic expansion valve is operated (1000 pulses are input to the closing direction).

5-11. TEST OPERATION CONTROL

The compressor won't enter operation status for 3 minutes after the compressor is stopped, even if any operation is given.

At the time when the air conditioner is switched from the cooling mode to heating mode, the compressor is stopped, and the 4-way valve is switched in 3 minutes later after the compressor stopped.

When the power was interrupted by a power failure, etc. during operation, the operation contents at that time are memorized and when power is recovered, operation is automatically resumed with the memorized operation contents. When the power is interrupted and recovered during timer operation, timer operation is canceled, but only setting time is memorized.

[Operation contents memorized when the power is interrupted]

Operation mode Set temperature

Set air flow

Timer mode and timer time Air flow Direction

Swing

Thermistor detected position

5-12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )

5-13. 4-WAY VALVE EXTENSION SELECT

5-14. AUTO RESTART

05-13

Under the condition where the air conditioner runs, short two metal contacts under the battery compartment lid, and the test operation control mode will appear. During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously. Set the test operation mode, and the compressor will continue to run regardless of whether the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation.

With Wireless Remote Controller

05-14

AB*30LBAG

AB*36LBAG

AB*45LBAG

5-17. DEFROST OPERATION CONTROL

1. CONDITION OF STARTING THE DEFROST OPERATION

2. CONDITION OF THE DEFROST OPERATION COMPLETION

Defrost operation is released when the conditions become as shown in Table 10.

(Table 10 : Defrost Release Condition)

Release Condition

Outdoor heat exchanger temperature sensor value is higher than 12°C or Compressor operation time has passed 15 minutes.

5-15. PUMP DOWN ( Refrigerant collecting operation )

When the product is stopped:

1. Press the PUMP DOWN switch (SW2) on the outdoor unit. (The LED on the outdoor unit circuit board flickers every 1second.)

2. The pump down operation (cooling operation) begins right away. After operation starts, close the 3-way valve (liquid).

3. After 2-3minutes, operation stops. Close the 3-way valve (gas) within 1minute after operations stops.

4. The LED will go out 3minutes after it stops. Disconnect the power supply after confirming that the LED has gone out.

When the product is operating:

1. Press the PUMP DOWN switch (SW2) on the outdoor unit. The LED on the outdoor unit circuit board flickers every 1second, and operation stops. At this point, recovery has not been completed, so do not close the 2 and 3-way valves.

2. The pump down operation (cooling operation) begins after 3minutes. Close the 3-way valve (liquid) after operation starts.

3. After 2-3minutes, operation stops. Close the 3-way valve (gas) within 1minute after operations stops.

4. The LED will go out 3minutes after it stops. Disconnect the power supply after confirming that the LED has gone out.

Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit.

When the outdoor heat exchanger temperature is lower than Operation temperature (Refer to Table 8) and the heating operation has

been stopped for 3 hours, power is applied to the compressor and the compressor is heated. (By heating the compressor, warm air is quickly discharged when operation is started.) When operation was started, and when the outdoor temperature rises to Release temperature or greater, preheating

is over.

5-16. COMPRESSOR PREHEATING

(Table 8 : Preheating Operation / Release Temperature)

Before 24 hour After 24 hour

Operation temperature

Release temperature

3°C 7°C 0°C 4°C

The defrost operation starts when the outdoor heat exchanger temperature sensor detects the temperature lower than the values shown in Table 9.

(Table 9 : Condition of starting Defrost Operation)

Less than 6 min. *1 or 10min. *2

AB*30LBAG AB*36LBAG

AB*45LBAG

*3. Outdoor temp. > -1°C *4. Outdoor temp. < -1°C

*2. Compressor stop time: Below 20min. Select 6min. Above 20min. Select 10min.

After 6 min. *1 or 10min. *2

Compressor integrating operation :Less than 45min.

Compressor integrating operation :45min and over

-8°C *3

-10°C *4

-8°C *3

-10°C *4

Does not operate

Outdoor temp. Outdoor heat exchanger temp.

Outdoor heat exchanger temp.

12 degC

-20°C

*1. It means contiguous operation time.

3. Defrost Flow Chart

The defrosting shall proceed by the integrating operation time and outdoor heat exchanger temperature as follows.

05-15

(Not defrosted for 6 or 10 minutes)

3 sec later Compressor OFF 3 sec later Outdoor fan motor OFF 28 sec later 4-way valve OFF 34 sec later compressor ON (Frequency : 92 Hz)

Outdoor fan motor : Low Compressor : 30 Hz 4-way valve OFF Outdoor fan motor OFF Compressor ON (Frequency : 92 Hz)

Heating operation start : Compressor ON

Defrost start

Defrost Indicator: [Operation lamp] 9 sec ON / 1 sec OFF

Outdoor heat exchanger temperature: Over 12°C or Compressor ON time: Over 15 minutes

Defrost end

Compressor integrating operation: 45 minutes and over

Outdoor heat exchanger temperarure: Below -10°C

Outdoor heat exchanger temperarure: Below -8°C

Outdoor temp. > -1°C

Outdoor temp. < -1°C

Compressor integrating operation: 45 minutes and over

Outdoor temp Outdoor heat exchanger temperature: Above 12 degC

Outdoor heat exchanger temperarure: Below -10°C

Outdoor heat exchanger temperarure: Below -20°C

Outdoor heat exchanger temperarure: Below -8°C

Outdoor temp. > -1°C

Outdoor temp. < -1°C

AB*30/ 36LBAG

AB*45LBAG

Defrost start

Defrost Indicator: [Operation lamp] 9 sec ON / 1 sec OFF

05-16

5-18. MANUAL AUTO OPERATION

If MANUAL AUTO Button is set, the operation is controlled as shown in Table 11. If the remote control is lost or battery power dissipated, this function will work without the remote control.

OPERATION MODE

Auto changeover

FAN CONT. MODE

Auto

TIMER MODE

Continuous (No timer setting available)

SETTING TEMP.

23°C

SETTING LOUVER

Standard

SWING

OFF

(Table 11 : Manual auto operation )

5-19. VARIOUS PROTECTIONS

1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL

The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature.

When the discharge temperature becomes higher than Temperature ,the compressor frequency is decreased 10 Hz, and it continues to decrease the frequency for 10 Hz every 120 seconds until

the temperature becomes lower than Temperature . When the discharge temperature becomes lower than Temperature ,the control of the compressor frequency is released.

When the discharge temperature becomes higher than Temperature ,the compressor stops. When the discharge temperature becomes lower than Temperature ,the compressor operates.

(Table 12 : Discharge Temperature Over Rise Prevention Control / Release Temperature)

Temperature Temperature Temperature Temperature

AB*30LBAG AB*36LBAG AB*45LBAG

110°C 105°C 120°C 80°C

2. CURRENT RELEASE CONTROL

05-17

[ Heating ]

AB*45LBAG

T0 > 12°C

T0 < 12°C

T0: Outdoor temperature

780 rpm850 rpm 350 rpm 200 rpm 150 rpm

23.5A / 23.0A 20.0A / 19.5A

23.5A / 23.0A 23.5A / 23.0A 23.5A / 23.0A 23.5A / 23.0A

20.0A / 19.5A 15.0A / 14.5A 12.0A / 11.5A

Outdoor unit fan speed

[ Cooling ]

AB*45LBAG

T0 > 45°C

T0: Outdoor temperature

780 rpm850 rpm 400 rpm 350 rpm 300 rpm

12.0A / 11.5A

20.0A / 19.5A 20.0A / 19.5A

23.5A / 23.0A

12.0A / 11.5A 12.0A / 11.5A

18.0A / 17.5A

20.0A / 19.5A

12.0A / 11.5A

18.0A / 17.5A

12.0A / 11.5A

15.0A / 14.5A

18.0A / 17.5A

Outdoor unit fan speed

[ Cooling ]

AB*30LBAG AB*36LBAG

T0 > 45°C

T0 < 0°C

T0 < 13°C

45°C > T0 > 38°C

38°C > T0 > 31°C

31°C > T0 > 25°C

25°C > T0 > 19°C

19°C > T0 > 13°C

13°C > T0 > 0°C

19°C > T0 > 13°C

38°C > T0 > 19°C

T0: Outdoor temperature

780 rpm850 rpm 400 rpm 250 rpm 170 rpm

10.0A / 9.5A

14.0A / 13.5A 14.0A / 13.5A

15.0A / 14.5A

18.0A / 17.5A

10.0A / 9.5A 10.0A / 9.5A

15.0A / 14.5A

7.0A / 6.5A

12.0A / 11.5A

5.5A / 5.0A

7.0A / 6.5A

9.5A / 9.0A

Outdoor unit fan speed

The compressor frequency is controlled so that the outdoor unit input current does not exceeds the current limit value that was set up with the outdoor temperature. The compressor frequency returns to the designated frequency of the indoor unit at the time when the frequency becomes lower than the release value.

(Table 13 : Current Release Operation Value / Release Value)

[ Heating ]

AB*30LBAG AB*36LBAG

T0 > 16°C

T0 < 5°C

16°C > T0 > 5°C

T0: Outdoor temperature

780 rpm900 rpm 400 rpm 250 rpm 170 rpm

15.0A / 14.5A 15.0A / 14.5A

18.0A / 17.5A 18.0A / 17.5A 18.0A / 17.5A18.0A / 17.5A

13.0A / 12.5A 10.0A / 9.5A 8.0A / 7.5A

18.0A / 17.5A

Outdoor unit fan speed

3. ANTI-FREEZING CONTROL (Cooling mode)

The compressor frequency decreases on cooling mode when the indoor heat exchanger temperature sensor detects the temperature lower than 3°C. Then, the anti-freezing control is released when it becomes higher than 6°C.

(Fig.11 : Anti-freezing Protection Operation / Release Temperature)

4. COOLING PRESSURE OVER RISE PROTECTION

When the outdoor unit heat exchange sensor temperature rises to 70.5°C or greater, the compressor is stopped and error display is indicated.

Indoor heat exchange temperature

5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )

On heating mode, the compressor frequency is controlled as following based on the detection value of the indoor heat exchanger temperature sensor.

(Fig.12 : Heating Overload Protection Control)

05-18

63°C

54°C

50°C

Compressor is OFF

The compressor frequency is decreased 10Hz every 60seconds.

Compressor OFF : Release of protection Compressor ON : The compressor frequency is increased 10Hz every 60seconds.

Hold

Indoor heat exchange temperature

3°C

6°C

12°C

The compressor frequency is decreased 10Hz every 120seconds.

Compressor OFF : Hold Compressor ON : Release of protection

Hold

Release of protection

When the compressor frequency becomes lower than minimum frequency, the compressor operates at minimum frequency. If the indoor heat exchanger temperature sensor detects the temperature lower than 3°C after 2minutes upon operating the compressor at minimum frequency,

the compressor stops.

6 . REFRIGERANT CAUTION -R410A-

R410A

INVERTER

Large Ceiling type

6-1. R410A TOOLS

Gauge manifold . . . . . . . . . . . . . . . . . . . . . (Fig.4-1)

Since the normal pressure is high, the connection pipe size is also different.

Charge hose . . . . . . . . . . . . . . . . . . . . . . . (Fig.4-2)

Refrigerant cylinder . . . . . . . . . . . . . . . . . (Fig.4-3)

Confirm the refrigerant type before charging. Always charge liquid-phase refrigerant.

Electronic balance for refrigerant

charging . . . . . . . . . . . . . . . . . . . . . . . . . . . (Fig.4-4)

Electronic balance is recommended as in the case of R410A.

Vacuum pump with adapter to prevent

reverse flow . . . . . . . . . . . . . . . . . . . . . . . .(Fig.4-5)

Conventional pump can be used.

Vacuum holder . . . . . . . . . . . . . . . . . . . . . (Fig.4-6)

Conventional pump can be used if adapter for preventing vacuum pump oil from flowing back is used.

Gas leakage tester . . . . . . . . . . . . . . . . . . (Fig.4-7)

Exclusive for HFC

Refrigerant cleaner . . . . . . . . . . . . . . . . . . (Fig.4-8)

Brown paint as designated by the ARI, USA

Flare tool . . . . . . . . . . . . . . . . . . . . . . . . . . (Fig.4-9)

Torque wrench . . . . . . . . . . . . . . . . . . . . (Fig.4-10)

Refrigerant recovering

equipment (Collector) . . . . . . . . . . . . . . (Fig.4-11)

The type which can be used for any refrigerant is available

Nitrogen cylinder . . . . . . . . . . . . . . . . . . . (Fig.4-12)

This prevents an oxide film from forming in the pipe silveralloy brazing work by turning the air out of the pipe and preventing the inside combustion.

Safety charger . . . . . . . . . . . . . . . . . . . . . (Fig.4-13)

It is always compulsory to change the liquid, because R410A is a mixed refrigerant and there is some fear that a mixing ratio changes. In order to avoid the refrigerant from returning to the compressor in a liquid state, the refrigerant can be charged instead of giving a load to the compressor with a safety charger.

Control valve . . . . . . . . . . . . . . . . . . . . . . (Fig.4-14)

The control valve prevents the refrigerant from spouting when it is removed, as the charging hose side and the service port side are possible to open and close at the same time.

Thermistor vacuum gauge . . . . . . . . . . . (Fig.4-15)

To remove moisture from the refrigerating cycle completely, it is necessary to perform appropriate vacuum drying. For that reason, vacuum conditions can be confirmed certainly.

Vacuum valve . . . . . . . . . . . . . . . . . . . . . (Fig.4-16)

This valve builts in a check valve, and it is easily possible to vacuum a refrigerating cycle or check for degree of vacuum with it.

TOOLS AND EQUIPMENT (R410A)

Gauge Manifold

R410A

R22, R407C

High pressure gauge

Compond gauge

Port size

-0.1 5.3 Mpa

-0.1 3.8 Mpa

1/2UNF 5/16"

-0.1 3.5 Mpa

-0.1 1.7 Mpa

7/16UNF 1/4"

Charge hose

R410A

R22, R407C

Normal pressure

Port size

5.1 Mpa

27.4 Mpa

1/2UNF

3.4 Mpa

17.2 Mpa

7/16UNF

Breaking pressure

This air conditioner used R410A. For installation and servicing, it is necessary to prepare the tools and machines that are different from the previous refrigerant.

Mark shows the exclusive use for R410A.

The specification of the gauge is different due to higher pressure. The size of connection pipe is also different to prevent mis-use.

The shape of flare is different for high pressure condition.

06-01

Gas charging

Vacuuming

Piping work

Pressure control and Circuit switching

Charge hose Fig.4-2

Outdoor unit

Electronic charging scale Fig.4-4

Vacuum pump Fig.4-5

Thermistor vacuum gauge Fig.4-15

Vacuum Valve Fig.4-16

Safety charger Fig.4-13

Control Valve Fig.4-14

Vacuum holder Fig.4-6

Leakage tester Fig.4-7

Cleaner Fig.4-8

Collector Fig.4-11

Nitrogen Cylinder Fig.4-12

Torque wrench Fig.4-10

Flare tool Fig.4-9

Gauge manifold Fig.4-1

Fig.4-3

Refrigerant cylinder

Vacuum control

Low pressure

High pressure

side

6. REFRIGERANT CAUTION -R410A-

6-2. PRECAUTION FOR INSTALLATION

06-02

Precaution for installation

The pipe must be properly pressure rated for R410A The pipe must be an air-conditioning refrigerant pipe.

Flare and flare nuts

Diameter 1/4 ” (6.35mm) 3/8 ” (9.52mm) 1/2” (12.7mm)

Refrigerant

R410A

R22 /R407C

R410A R410A

A 9.1 9.0 13.2 13.0 16.6

16.2

B 13 12 20 15 13 20

C 12 11 16 12.5 19 16

Nut width 17 22 26 24

Always use the flare nut that is packed with the product.

Do not use existing (for R22) pipes

•

Be sure to use new pipes when replacing conventional (R22) model with HFC (R407C, R410A) model.

•

If you use existing pipes, it may cause resolution of compressor oil by remaining mineral oil.

3/8” (15.88mm)

R410A

19.7

R22 /R407C

19.4

23 20

3/4” (19.05mm)

R410A

R22 /R407C

23.7

29 24

Material

Nominal diameter

(in)

1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1 1/8" 1 1/4" 1 1/2"1 3/8"1"

6.35 9.52 12.70 15.88 19.05 22.22 28.58 31.75 38.1034.9225.40

Outside diameter

(mm)

Wall thickness

(mm)

0.8 0.8 0.8 1.0 1.2 1.0 1.0 1.1 1.31.21.0

1) Allowable tensile stress 33 (N/mm );

> =

2) Allowable tensile stress 61 (N/mm ); 3) Design pressure 4.2MPa.

> =

JIS H3300-C1220T-H or equivalent

COPPER

JIS H3300-C1220T-O or equivalent

COPPER

Pipe diameter, recommended material and wall thickness

Be careful not to mix moisture and

contamination into the pipe

Moisture and contamination

in the pipe is a cause of trouble.

Air purge

Always use a

vacuum pump

to purge air.

Refrigerant charge

Do it always from the liquid phase side.

Don't charge from the gas phase side.

Compressor oil is changed

Be careful to handle synthetic oil, since it resolves easily by moisture and

contamination.

Don't mix new synthetic oil and mineral oil.

It may cause trouble.

We developed new synthetic oil, since HFC refrigerant doesn't dissolve in mineral (for R22)oil.

06-03

6-3. PRECAUTION FOR SERVICING

Feature 1 Refrigerant oil is different from before.

Refrigerant oil for New Refrigerant

Synthetic oil

Ether

Esther

Different point from previous one

Previously it was mineral oil.

Absorbent character is high.

Contamination occurs when mixed withe other kind of oil.

Use the gauge manifold and charge hose for New Refrigerant(HFC), which shall be segregated from those of R22.

Attach the stop valve on the vacuum pump and avoid the oil from reverse frow.

It is necessary to use the vacuum pump which can obtain the high vacuum condition.

Precaution on Tools

Feature 2 New Refrigerant has Approx 1.6 times higher pressure than previous refrigerant.

R410A

High Pressure

Different point from previous one

Diameter of Service port has been changed from 1/4 Flare to 5/16 Flare.

It requires the gauge manifold and charge hose exclusively for R410A.

It requires the flare tool and torque wrench that satisfies New JIS standard.

Precaution on Tools

R410A R22

1.6 times of R22.

JIS standard of flare process It became lager

To keep thethickness of copper tube. (1/4,3/3=more than 0.8mm)

Previous flare tool + flare adapter can be used as well.

06-04

6-4. NEW REFRIGERANT R410A

What is HFC ?

Phase-out schedule of HCFC

according to Montreal protocol

1996 20102000 2004 2015 2020 2030

100

(Year)

(%)

(HCFC consumption of 1989) +

(CFC consumption of 1989) x 2.8%

65%

35%

10%

0.5%

started control

only service use

total abolition

100% =

06-05

Ozone Layer depleting mechanism

CFC

CFCl

Cl Ozone

(O3)

ClO

sunbeam

What is CFC and HCFC?

CFC : Chloro-Fluoro-Carbon

High ODP( ozone depletion potential ) chemical compound, including chlorine. (ODP:0.6-1.0) For example : R12 (for refrigerator and car air-conditioner)

Low ODP chemical compound, including chlorine and hydrogen. (ODP:0.02-01)

HCFC : Hydro-Chloro-Fluoro-Carbon

For example : R22 (for air-conditioner)

R134a (for Car air conditioner)

HFC3 : Hydro-Fluoro-Carbon

R407C (for air conditioner)

Refrigerant characteristics

R22

Composition

(wt%)

R22

(100)

Boiling Point

- 40.8

Behavior ---

Pressure at 54.5

(kPa)

2,151

Temperature Glide

(deg)

ODP 0.055

R407C

R32/R125/R134a

(23/25/52)

- 43.6

zeotrope

2,262

5.4

R410A

R32/R125

(50/50)

- 51.4

near azeotrope

3,406

0.11

06-06

Summary of R407C and R410A characteristics

Pressure (Mpa) Temp ( C)

2.20 37.9

2.25 38.7

2.30 39.6

2.35 40.5

2.40 41.3

2.45 42.1

2.55 43.8

2.60 44.6

2.65 45.3

2.70 46.1

2.75 46.8

2.80 47.6

2.85 48.3

2.90 49.0

2.95 49.8

3.00 50.5

3.05 51.2

3.10 51.9

3.15 52.6

3.20 53.2

3.25 53.9

3.30 54.6

3.35 55.3

3.40 55.9

3.45 56.5

3.50 57.1

2.55 57.8

3.60 58.4

3.65 59.0

3.70 59.6

3.75 60.2

3.80 60.8

3.85 61.4

3.90 52.0

3.95 62.5

4.00 63.1

4.05 63.6

4.10 64.2

4.15 64.8

Temp ( C) Pressure (Mpa)

39 2.27 40 2.32 41 2.38 42 2.44 44 2.57 45 2.63 46 2.69 47 2.76 48 2.83 49 2.90 51 3.04 52 3.11 53 3.18 54 3.26 56 3.41 57 3.49 58 3.57 59 3.65 61 3.82 62 3.90 63 3.99 64 4.08

Desighed pressure of R410A refrigerant

< Pressure Temp >

Relation between R410A condensing temperature and saturated pressure.

< Temp Pressure >

Advantage

Disadvantage

Suitable for

R410A

higher system

performance

Near-Azeotropic

refrigerant

1.6 times higher

(difficult to design against

pressure resistance)

Small Air-Conditioners

pressure than R22

R407C

similar pressure as R22

(possible to design

large equipment)

Zeotropic refrigerant

(handle with care)

Large Air-Conditioners

05-07

OIL

• Use new synthetic oils such as ester because HFC series refrigerant has less solubility with mineral oils conventionally used for R22.

• As these new synthetic oils are easily influenced by moisture and dusts, they must be treated more care-

fully than the conventional lubricating oils.

CAUTION

For installation/servicing, take more precautions than the case of conventional refrigerants to avoid moisture and dusts entering the refrigerant circuit. Also, for storing parts, more precautions must be taken.

2, 3-WAY VALVE

• Review material O-ring, valve core seal for securing suitability with oil.

CAUTION

Check if the valve is suitable for the refrigerant (model) when replacing.

CAUTION

Check if the compressor is suitable for the refrigerant (model) when replacing. Complete welding within 15minutes after opening the cap when replacing.

COMPRESSOR

• Use better grade of material for sliding parts for securing good lubrication of sliding part as HFC refrigerant does not contain chloride.

• Review insulating materials

• Increase pressure resistance strength

CAUTION

During storage, due care must be taken so that foreign matters such as dust and water do not enter.

HEAT EXCHANGER

• Review the water,contaminants controlling level

• Use thinner tube to increase pressure Increase capacity for resistance strength (only outdoor unit) improving performance

CAUTION

Check if the valve is suitable for the refrigerant (model) when replacing.

4-WAY VALVE

• Review materials

6-5. DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS

06-08

Check Valve

Other Piping

CAUTION

Check if the valve is suitable for the refrigerant (model) when replacing.

• Review materials Change shape of pipe ends to increase pressure resistance strength.

•

Review the water, contaminants controlling level. Review thickness of pipes.

•

CAUTION

During storage, due care must be taken so that foreign matters such as dust and water do not enter.

7 . TROUBLE SHOOTING

R410A

INVERTER

Large Ceiling type

7. TROUBLESHOOTING

07-01

7-1 ERROR DISPLAY

7-1-1 INDOOR UNIT DISPLAY

Communication error (Serial reverse transfer error)

Room temperature sensor open

Room temperature sensor short-circuited

Indoor heat exchanger temperature sensor open

Indoor heat exchanger temperature sensor short-circuited

Outdoor heat exchanger temperature sensor error

Outdoor temperature sensor error

Outdoor discharge pipe temperature sensor error

Indoor EEPROM abnormal (Model No.)

Indoor fan motor abnormal

Outdoor unit fan motor error

Outdoor communication signal error (Forward transfer signal error)

Pressure switch error

Active filter module (AFM) error

CT error

IPM error

Compressor rotor location cannot detect

(permanent stop)

Compressor temperature sensor error

0.5sec0.5sec

5sec

OFF

0.1sec 0.1sec

OFF

1. ERROR DISPLAY

2. ERROR DISPLAY METHOD

Error Contents

2 times blink

3 times blink

5 times blink

6 times blink

5 times blink

3 times blink

4 times blink

5 times blink

8 times blink

9 times blink

10 times blink

11 times blink

12 times blink

13 times blink

14 times blink

OFF

Trouble shooting

Vertical Swing LED

Timer LED

Operation LED

Please refer the blinking pattern as follows.

Continuous blink

LED Continuous Blink : 0.1sec ON / 0.1sec OFF blinking

LED Blink (2 to 14 times) : 0.5sec ON / 0.5sec OFF blinking

(RED) (GREEN) (ORANGE)

07-02

Operation LED Blinking Pattern

Normal operation Continuously lighting

5sec ON / 1sec OFF

Protected operation

1sec ON / 1sec OFF

Pump down operation

0.5sec 0.5sec 2sec

OFF

1. ERROR DISPLAY

3. NORMAL OPERATION DISPLAY

2. ERROR DISPLAY METHOD

Outdoor LED Blink (1 to 16 times) 0.5sec ON / 0.5sec OFF blinking

7-1-2 OUTDOOR UNIT DISPLAY

Error contents

LED Flashing Pattern

Display priority

Trouble shooting

Outdoor communication signal error (Forward transfer signal error)

1 time blink

2 times blink 3 times blink 4 times blink 7 times blink 8 times blink

9 times blink 12 times blink 13 times blink

14 times blink 15 times blink

2 3 4 5 6 7 8

9 10

Outdoor heat exchanger temperature sensor error

Outdoor temperature sensor error

Outdoor discharge pipe temperature sensor error

Outdoor unit fan motor error (upper fan)

Pressure switch abnormal

IPM error

Compressor rotor location cannot detect

Compressor Start-up error

Compressor temperature sensor error

Heat sink temperature sensor error

6 11 18 12 13 16 19

16 times blink

Outdoor unit fan motor error (lower fan)

Trouble shooting 2

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Indicate or Display:Indicate or Display:

Outdoor Unit : No indication

YESYES

WHITE

BLACK

RED

WHITE

BLACK

Communication Error (Serial Reverse Transfer Error)

Outdoor Unit Main PCB Circuit

1. Connection failure 2. External cause 3. Main PCB failure 4. Active Filter Module failure

Check Point 1-1 : Reset the power and operate

Does Error indication show again?

Check Point 1-2:

Check external cause such as noise

Check the complete insulation of the grounding.

Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave).

Check Point 2 : Check Connection

Check any loose or removed connection line of Indoor unit and Outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection between Outdoor Unit Main PCB and Filter PCB. (If there is loose connector or open cable)

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198 - 264V appears at Outdoor Unit Terminal L - N.

Check Point 4 : Check Serial Signal (Reverse Transfer Signal)

Check Serial Signal (Reverse Transfer Signal)

>> Check if Indicated value swings between AC70V and AC130V at Outdoor Unit Terminal 1 - 3.

>> If it is abnormal, Check Active Filter Module. (PARTS INFORMATION 3)

When the indoor unit cannot receive the serial signal from Outdoor unit more than 10seconds.

>>If Active Filter Module is abnormal, replace it.

>>If Active Filter Module is normal, replace Main PCB.

07-03

Indoor Unit : Operation LED: 5 times blink, Timer LED: Blink, Vertical swing LED: OFF

7-2 TROUBLE SHOOTING WITH ERROR CODE

Trouble shooting 3

INDOOR UNIT

INDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : No indication

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 : Check Point 2 : Remove connector and check Thermistor resistance value

Check Point 1 : Check connection of Connector

Check Point 3 : Check Point 3 : Check voltage of Controller PCB (DC5.0V)

6.51

35°C

8.04

30°C

10.012.515.820.225.933.6Resistance Value (k )

25°C20°C15°C10°C5°C0°C

Temperature

3.594.355.30Resistance Value (k )

50°C45°C40°C

Temperature

THERMISTOR (PIPE TEMP.)

THERMISTOR (ROOM TEMP.)

GRAY

BLACK

CN7 CN8

1 2 1 2

Room Temperature Sensor Error

Indoor Unit Controller PCB Circuit Room Temperature Thermistor

When Room Temperature Thermistor open or short-circuit is detected at power ON.

1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Thermistor Characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Make sure circuit diagram of indoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Controller PCB.

07-04

1 2

Indoor Unit : Operation LED: 2 times blink, Timer LED: Blink, Vertical swing LED: OFF / Blink

Trouble shooting 4

INDOOR UNIT

INDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : No indication

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

31.7

35°C

39.6

30°C

49.762.980.3103134176Resistance Value (k )

25°C20°C15°C10°C5°C0°C

Temperature

OKOK

17.120.825.6Resistance Value (k )

50°C45°C40°C

Temperature

Indoor Heat Exchanger Temperature Sensor Error

Indoor Unit Controller PCB Circuit Heat Exchanger Temperature Thermistor

When Heat Exchanger Temperature Thermistor open or short-circuit is detected at power ON.

1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Controller PCB (DC5.0V)

Make sure circuit diagram of indoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Controller PCB.

THERMISTOR (PIPE TEMP.)

THERMISTOR (ROOM TEMP.)

GRAY

BLACK

CN7 CN8

1 2 1 2

1 2

07-05

Indoor Unit : Operation LED: 3 times blink, Timer LED: Blink, Vertical swing LED: OFF / Blink

Trouble shooting 5 OUTDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : LED 3 times blink

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

4.89

25°C

6.10

20°C

7.679.7312.416.120.927.5Resistance Value (k )

15°C10°C5°C0°C-5°C-10°C

Temperature

OKOK

3.95

30°C

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

THERMISTOR

(HEAT SINK)

BROWN

BLACK

BLUE

BROWN

CN21 CN22 CN23 CN26 CN25

1 2 1 2 1 2 1 2 1 2

Outdoor Heat Exchanger Temperature Sensor Error

Outdoor Unit Main PCB Circuit Heat Exchanger Temperature Thermistor

When Heat Exchanger Temperature Thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2.Thermistor failure 3. Main PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

07-06

Indoor Unit : Operation LED: Blink, Timer LED: 3 times blink, Vertical swing LED: OFF

Trouble shooting 6

INDOOR UNIT

OUTDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : LED 4 times blink

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

OKOK

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

THERMISTOR

(HEAT SINK)

BROWN

BLACK

BLUE

BROWN

CN21 CN22 CN23 CN26 CN25

1 2 1 2 1 2 1 2 1 2

30°C

12.620.726.935.246.662.3115Resistance Value (k )

20°C

16.1

15°C10°C5°C0°C-20°C -10°C -5°C

Temperature

3.45 2.36 1.65Resistance Value (k )

50°C 60°C 70°C

5.187.97

40°C

Temperature

Outdoor Temperature Sensor Error

Outdoor Unit Main PCB Circuit Outdoor Temperature Thermistor

When Outdoor Temperature Thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2.Thermistor failure 3. Main PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

07-07

Indoor Unit : Operation LED: Blink, Timer LED: 4 times blink, Vertical swing LED: OFF

Trouble shooting 7

INDOOR UNIT

OUTDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : LED 2 times blink

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

18.126.9

20°C

41.164.581.8105135176Resistance Value (k )

15°C10°C5°C0°C

Temperature

OKOK

12.5

30°C

50°C40°C

60°C

0.51

180°C

0.77

160°C

1.211.983.434.616.318.78Resistance Value (k )

140°C120°C100°C

90°C80°C70°C

Temperature

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

THERMISTOR

(HEAT SINK)

BROWN

BLACK

BLUE

BROWN

CN21 CN22 CN23 CN26 CN25

1 2 1 2 1 2 1 2 1 2

Outdoor Discharge Pipe Temperature Sensor Error

Outdoor Unit Main PCB Circuit Discharge Pipe Temperature Thermistor

When Discharge Pipe Temperature Thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2.Thermistor failure 3. Main PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

07-08

Indoor Unit : Operation LED: Blink, Timer LED: 5 times blink, Vertical swing LED: OFF

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Replace Controller PCB

Check Point 2 : Check Indoor Unit electric components

YESYES

Trouble shooting 8

INDOOR UNIT Error Method:

Indicate or Display:

Indoor Unit : Operation LED: Blink, Timer LED: Blink, Vertical swing LED: OFF Outdoor Unit : No indication

Indoor EEPROM abnormal (Model No.)

Indoor Unit Controller PCB circuit

1. External cause 2. Defective connection of electric components 3. Controller PCB failure

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

Check Point 1-2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop : Check if there is a large load electric apparatus in the same circuit.

Momentary power failure : Check if there is a defective contact or leak current in the power supply circuit.

Noise : Check if there is any equipment causing harmonic wave near electric line.(Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Note : EEPROM

EEPROM(Electronically Erasable and Programmable Read Only Memory) is a nonvolatile memory which keeps memorized information even if power is turned off. It can change the contents electronically. To change the contents, it uses higher voltage than normal, and it can not change a partial contents. (Rewriting shall be done upon erasing the all contents.) There is a limit in a number of rewriting.

Change Controller PCB.

Check all connectors. (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

When the model information being read from EEPROM has an apparent error.

07-09

Indicate or Display:

Trouble shooting 9

INDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 2 : Check Motor winding

Check Point 1 : Check rotation of Fan

Check Point 3 : Check ambient temp. around motor

Check Point 4 : Check Motor Capacitor

Indicate or Display:

Outdoor Unit : No indication

Indoor Fan Motor abnormal

Indoor Unit Controller PCB Circuit Indoor Fan Motor

1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temperature rise

4. Capacitor failure 5. Control PCB failure

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or Bearing is abnormal, replace it.

Check Indoor Fan motor. (PARTS INFORMATION 5)

>>If Fan motor is abnormal, replace it.

Check excessively high temperature around the motor. (If there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

Check continuity of motor capacitor

>>If it is shorted, replace the capacitor.

When the condition that actual frequency of Indoor Fan is below 1/3 of target frequency is continued more than 56 seconds.

07-10

Indoor Unit : Operation LED: 6 times blink, Timer LED: Blink, Vertical swing LED: OFF

Check Point 5 : Replace Controller PCB

If Check Point 1- 4 do not improve the symptom, replace Controller PCB.

Trouble shooting 10

INDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 2 : Check Connection

Indicate or Display:Indicate or Display:

Outdoor Unit : LED 1 time blink

Check Point 3 : Check the voltage of power supply

Check Point 1-1 : Reset the power

YESYES

Check Point 1-2:

WHITE

BLACK

RED

WHITE

BLACK

Check Point 4 : Check Serial Signal (Forward Transfer Signal)

Check Serial Signal (Forward Transfer Signal)

Outdoor Communication Signal Error (Forward Transfer Signal Error)

Indoor Unit Controller PCB Circuit

1. Connection failure 2. External cause 3. Controller PCB failure

Does Error indication reappear?

Check external cause such as noise

Check the complete insulation of the grounding.

Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave).

Check the voltage of power supply

>> Check if AC198 - 264V appears at Outdoor Unit Terminal L - N.

>> Check if Indicated value swings between AC70V and AC130V at Outdoor Unit Terminal 2 - 3.

Check any loose or removed connection line of Indoor unit and Outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection between Indoor Unit Controller PCB and Filter PCB. (If there is loose connector or open cable)

>> If it is abnormal, Controller PCB is failure. >> Replace Controller PCB

07-11

When the outdoor unit cannot receive the serial signal from Indoor unit more than 10seconds.

Indoor Unit : Operation LED: 5 times blink, Timer LED: Blink, Vertical swing LED: Blink

Trouble shooting 11 OUTDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : LED 7 times blink

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

18.126.9

20°C

41.164.581.8105135176Resistance Value (k )

15°C10°C5°C0°C

Temperature

OKOK

12.5

30°C

50°C40°C

60°C

0.51

180°C

0.77

160°C

1.211.983.434.616.318.78Resistance Value (k )

140°C120°C100°C

90°C80°C70°C

Temperature

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

THERMISTOR

(HEAT SINK)

BROWN

BLACK

BLUE

BROWN

CN21 CN22 CN23 CN26 CN25

1 2 1 2 1 2 1 2 1 2

Compressor Temperature Sensor Error

Outdoor Unit Main PCB Circuit Compressor Temperature Thermistor

When Compressor Temperature Thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2. Thermistor failure 3. Main PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics (Rough value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

07-12

Indoor Unit : Operation LED: Blink, Timer LED: 8 times blink, Vertical swing LED: OFF

Trouble shooting 12

INDOOR UNIT

OUTDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : LED 9 times blink

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 3 : Check Point 2 : Check voltage of Main PCB (DC5.0V)

HIGH PRESSURE SW

BLACK

RED RED

CN37

1 2

1 2 3

4WV

Check Point 1 : Reset Power Supply and operate

Check Point 3 : Check Pressure Switch

YESYES

NONO

Pressure Switch Error

Outdoor Unit Main PCB Circuit Pressure Switch

1. Connector connection failure 2. Pressure Switch failure 3. Main PCB failure

When pressure switch open is detected in 10 seconds after the power is turned on.

Does abnormal LED indication show again?

Make sure circuit diagram of outdoor unit and check terminal voltage at Pressure Switch. (DC5.0V)

If the voltage does not appear, replace Main PCB.

Check if connector is loose or cable is open.

>> If no abnormal connection is found, replace Pressure Switch.

After replacing Pressure Switch, check operating condition and pressure in operation.

07-13

Indoor Unit : Operation LED: Blink, Timer LED: 9 times blink, Vertical swing LED: OFF

Trouble shooting 13

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 3 : Check Compressor

(PARTS INFORMATION 2)

Indicate or Display:

Outdoor Unit : LED 12 times blink

Check Point 4 : Replace Main PCB

OKOK

Check Point 1 : Check connections of Outdoor Unit Electrical Components

IPM error (Permanent Stop)

Outdoor Unit Main PCB Circuit Compressor

1. Defective connection of electric components 2. Outdoor Fan Operation failure

3. Outdoor Heat Exchanger clogged 4. Compressor failure 5. Main PCB failure

Check if connector is removed.

Check if the terminal connection is loose.

Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Check Outdoor Fan, Heat Exchanger

Is there anything obstructing the air distribution circuit? Is there any clogging of Outdoor Heat Exchanger? Is the Fan rotating by hand when operation is off ?

Check Outdoor Fan Motor. (Refer to Trouble shooting 17)

>> If the Fan Motor is locked, replace it.

>> If the Fan Motor is failure, replace it.

Check Compressor.

If Check Point 1, 2, 3 do not improve the symptom, change Main PCB.

When more than normal operating current to IPM in Main PCB flows, the compressor stops. After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again. If and repeats 5 times, the compressor stops permanently.

07-14

Indoor Unit : Operation LED: Blink, Timer LED: 10 times blink, Vertical swing LED: OFF

Trouble shooting 14

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 3 : Check Filter PCB and Main PCB

YES

Outdoor Unit : No indication

CT error

Outdoor Unit Main PCB Circuit Outdoor Unit Filter PCB Circuit (Input current sensor unit)

Check Point 2 : Check connections of Outdoor Unit Electrical Components

Check if connector is removed.

Check if the terminal connection is loose.

Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 1-2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

1. Defective connection of electric components 2. External cause 3. Filter PCB failure 4. Main PCB failure

Instant drop : Check if there is a large load electric apparatus in the same circuit.

Momentary power failure : Check if there is a defective contact or leak current in the power supply circuit.

Noise : Check if there is any equipment causing harmonic wave near electric line.(Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

When Input Current Sensor has detected lower than 0.5A while Inverter Compressor is operating at higher than 56Hz, after 1minute upon starting the Compressor. (Except during the defrost operation)

07-15

Check DC voltage of CN1 (between 2 (Brown) and 3 (Red)) on Filter PCB.

>> After 40seconds upon starting the Compressor, If it is higher than 0.2V, Main PCB is failure. (Filter PCB is normal) >> Replace Main PCB >> If it is lower than 0.2V, Filter PCB is failure. >> Replace Filter PCB

If it does not improve the symptom, change Main PCB.

Indicate or Display:

Indoor Unit : Operation LED: Blink, Timer LED: 11 times blink, Vertical swing LED: OFF

Trouble shooting 15

INDOOR UNIT

OUTDOOR UNIT Error Method:

Indicate or Display:

Outdoor Unit : No indication

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 3 : Check Active Filter Module

OKOK

Active Filter Module (AFM) error

Outdoor Unit Main PCB Circuit Active Filter Module

1. External cause 2. Connector connection failure 3. Active Filter Module failure ４. Main PCB failure

Check Point 2 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Active Filter Module. (PARTS INFORMATION 3) >>If Active Filter Module is abnormal, replace it.

Check Point 4 : Replace Main PCB

If Check Point 1, 2 do not improve the symptom, change Main PCB.

Check Point 1 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop : Check if there is a large load electric apparatus in the same circuit.

Momentary power failure : Check if there is a defective contact or leak current in the power supply circuit.

Noise : Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

07-16

When inverter input DC voltage is higher than 467V or lower than 237V. When a momentary power cut off occurred on low voltage.

Indoor Unit : Operation LED: Blink, Timer LED: 12 times blink, Vertical swing LED: OFF

Trouble shooting 16

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 1 : Check connection of around the Compressor components

OKOK

Indicate or Display:Indicate or Display:

Outdoor Unit : LED 13 times blink

Check Point 2 : Replace Main PCB

Outdoor Unit Main PCB Circuit

Compressor rotor location cannot detect (Permanent Stop)

1. Defective connection of electric components 2. Main PCB failure

If Check Point 1 do not improve the symptom, change Main PCB.

Check if connector is removed.

Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

(Refer to PARTS INFORMATION 2)

For Compressor Terminal, Main PCB

While running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90 degrees, the compressor stops. After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again. If and repeats 5 times, the compressor stops permanently.

07-17

Indoor Unit : Operation LED: Blink, Timer LED: 13 times blink, Vertical swing LED: OFF

Trouble shooting 17

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 2 : Check ambient temp. around motor

Indicate or Display:

Outdoor Unit : LED 15 (Fan motor 1) / 16(Fan motor 2) times blink

Outdoor Unit Fan Motor Error

Outdoor Unit Main PCB Circuit Outdoor Fan Motor

1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure

Check Point 1 : Check rotation of Fan

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or Bearing is abnormal, replace it.

Check excessively high temperature around the motor. (If there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

When outdoor fan rotation speed is less than 100rpm in 20 seconds after fan motor starts, fan motor stops. After fan motor restarts, if the same operation within 60sec is repeated 3 times in a row, compressor and fan motor stops. If and repeats 5 times in a row, compressor and fan motor stops permanently.

07-18

Indoor Unit : Operation LED: Blink, Timer LED: 14 times blink, Vertical swing LED: OFF

Check Point 3 : Check Output Voltage of Main PCB

Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)

If the voltage is not correct, replace Main PCB.

AB*30/ 36LBAG AU*45LBAG

Read wire DC voltage

Red - Black

White - Black

300 400V

15 1.5V

〜

CN800

CN801

1 2 3 4 5 6 7

BLACK WHITE YELLOW BROWN

RED

BLACK WHITE YELLOW BROWN

RED

FAN MOTOR 1

FAN MOTOR 2

CN800

1 2 3 4 5 6 7

BLACK WHITE YELLOW BROWN

RED

FAN MOTOR 1

Trouble shooting 18 OUTDOOR UNIT Error Method:

Indicate or Display:

Indoor Unit : No LED Outdoor Unit : LED 8 Times Blink

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

OKOK

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

THERMISTOR

(COMPRESSOR)

THERMISTOR

(HEAT SINK)

BROWN

BLACK

BLUE

BROWN

CN21 CN22 CN23 CN26 CN25

1 2 1 2 1 2 1 2 1 2

30°C

6.109.7312.416.1Resistance Value (k )

20°C

7.67

15°C10°C5°C0°C

Temperature

1.79

1.25 0.89Resistance Value (k )

50°C

60°C 70°C

0.65

80°C

0.48

90°C

0.36

100°C

0.27

110°C

0.21

120°C

2.623.95

40°C

Temperature

Heat Sink Temperature Sensor Error

Outdoor Unit Main PCB Circuit Heat Sink Temperature Thermistor

When Heat Sink Temperature Thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2.Thermistor failure 3. Main PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if thermistor cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

07-19

Trouble shooting 19

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Indicate or Display:

Indoor Unit : No LED Outdoor Unit : LED 14 Times Blink

Compressor Start-up error (Permanent Stop)

On start-up the compressor, when detected rotor position is out of phase with actual rotor position more than 90 degrees,the compressor stops. After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again. If and repeats 5 times, the compressor stops permanently.

Outdoor Unit Main PCB Circuit

1. Defective connection of electric components 2. Main PCB failure

Check Point 1 : Check connection of around the Compressor components

OKOK

Check Point 2 : Replace Main PCB

If Check Point 1 do not improve the symptom, replace Main PCB.

Check if connector is removed. Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

(Refer to PARTS INFORMATION 2)

For Compressor Terminal, Main PCB

07-20

Trouble shooting 20

Forecast of Cause:

YESYES

OKOK

Indoor Unit - No Power

1. Power Supply failure 2. External cause

3. Electrical Components defective

Check Point 1 : Check Installation Condition

Isn’t the breaker down? Check loose or removed connection cable.

>>If abnormal condition is found, correct it by referring to Installation Manual or Data & Technical Manual.

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop ----- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check Point 3 : Check Electrical Components

Check Voltage of power supply.

>> Check AC198 - 264V appears at Indoor Unit Terminal 1 - 2 (Power Supply).

Check Fuse (F101) in Filter PCB.

>> If Fuse is open, check if the wiring between Terminal and Filter PCB is loose, and replace Fuse.

Check Varistor (VA101, VA102) in Filter PCB.

>> If Varistor is defective, there is a possibility of an abnormal power supply. Check the correct power supply and replace Varistor.

If the symptom does not change by above Check3, replace Filter PCB.

07-21

7-3 TROUBLE SHOOTING WITH NO ERROR CODE

Trouble shooting 21

Forecast of Cause:

Check Point 3 : Check Electrical Components

OKOK

YESYES

Check Point 1 : Check Installation Condition

Outdoor Unit - No Power

1. Power Supply failure 2. External cause

3. Electrical Components defective

Isn’t the breaker down? Check loose or removed connection cable.

>>If abnormal condition is found, correct it by referring to Installation Manual or Data & Technical Manual.

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop ----- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check the voltage of power supply.

>> Check if AC198 - 264V appears at Outdoor Unit Terminal L - N.

YESYES

Check Fuse (F2, F4) in Main PCB.

>> If Fuse is open, check loose terminal or removed connector (CN1) , and replace Fuse.

Check Varistor in Main PCB (VA103).

>> If Varistor is defective, there is a possibility of an abnormal power supply. Check the correct power supply and replace Varistor. Upon checking the normal power supply, replace Varistor.

If the symptom does not change by above Check 3, replace Main PCB.

Check Active Filter Module. (PARTS INFORMATION 3) >>If Active Filter Module is abnormal, replace it.

07-22

Trouble shooting 22

Forecast of Cause:

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Check Point 1 : Check indoor and outdoor installation condition

Check Point 3 : Check Electrical Components at Indoor and Outdoor

OKOK

No Operation (Power is ON)

1. Setting/ Connection failure 2. External cause

3. Electrical Component defective

Indoor Unit - Check incorrect wiring between Indoor Unit - Remote Control, or terminals between Indoor Units. Or, check if there is an open cable connection. Are these Indoor Unit, Outdoor Unit, and Remote Control suitable model numbers to connect?

>> If there is some abnormal condition, correct it by referring to Installation manual and Data & Technical Manual.

Turn off Power and check/ correct followings.

Is there loose or removed communication line of Indoor Unit and Outdoor Unit?

Instant drop ----- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check Voltage at CN17 of Controller PCB. (Power supply to Remote Control)

>> If it is DC12V, Remote Control is failure. (Controller PCB is normal) >> Replace Remote Control >> If it is DC 0V, Controller PCB is failure. (Check Remote Control once again) >> Replace Controller PCB

>> If the symptom does not change by above Check 1, 2, 3, replace Main PCB of Outdoor unit.

07-23

Attention

Trouble shooting 23

Forecast of Cause:

Check Point 2 : Check Outdoor Unit Operation

Check Point 1 : Check Indoor Unit

Check Point 3 : Check Site Condition

Check Point 5 : Check Refrigeration Cycle

Check Point 4 : Check Indoor/ Outdoor Installation Condition

Pipe (In) Pipe (Out)

OKOK

MPa MPa

No Cooling / No Heating

1. Indoor Unit error 2. Outdoor Unit error

3. Effect by Surrounding environment

4. Connection Pipe / Connection Wire failure 5. Refrigeration cycle failure

Does Indoor Unit FAN run on HIGH FAN?

Is Air Filter dirty? Is Heat Exchanger clogged?

Check if Energy save function is operated.

Check if Outdoor Unit is operating (If not, refer to Trouble shooting 22)

Check any objects that obstruct the air flow route.

Check clogged Heat Exchanger.

Is the Valve open?

Is capacity of Indoor Unit fitted to Room size?

Any windows open? Or direct sunlight ?

Check connection pipe (specified pipe length & Pipe diameter?)

Check any loose or removed communication line.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check if Strainer is clogged (Refer to the figure at right).

Measure Gas Pressure and if there is a leakage, correct it.

>> When recharging the refrigerant, make sure to perform vacuuming, and recharge the specified amount.

Check EEV (PARTS INFORMATION 4)

Check Compressor (PARTS INFORMATION 1,2)

Strainer normally does not have temperature difference between inlet and outlet as shown in , but if there is a difference like shown in , there is a possibility of inside clogged. In this case, replace Strainer.

07-24

Trouble shooting 24

Forecast of Cause :

Trouble shooting 25

Forecast of Cause:

OKOK

MPa MPa

Abnormal Noise

1. Abnormal installation (Indoor/ Outdoor) 2. Fan failure(Indoor/ Outdoor)

3. Compressor failure (Outdoor)

Diagnosis method when Abnormal Noise is occurred

Abnormal noise is coming from Indoor Unit. (Check and correct followings)

Abnormal noise is coming from Outdoor Unit. (Check and correct followings)

Is Fan broken or deformed? Is the screw of Fan loose? Is there any object which obstruct the Fan rotation?

Is Main Unit installed in stable condition? Is the installation of Air suction grille and front panel normal?

Is Fan broken or deformed? Is the screw of Fan loose? Is there any object which obstruct the Fan rotation?

Is Main Unit installed in stable condition? Is Fan Guard installed normally?

Check if vibration noise by loose bolt or contact noise of piping is happening.

Is Compressor locked?

>> Check Compressor (PARTS INFORMATION 1,2)

Water Leaking

1. Erroneous installation 2. Drain hose failure

Diagnosis method when water is spitting out.

Is the filter clogged?

Check Gas Pressure and correct it if there was a gas leak.

Diagnosis method when water leak occurs

Is Drain Hose connection loose? Is there a trap in Drain Hose?

Is Drain Hose clogged?

Is Main Unit installed in stable condition? Is Main Unit broken or deformed at the time of transportation or maintenance?

Is Fan rotating?

>> Check Fan Motor (PARTS INFORMATION 5)

07-25

SERVICE PARTS INFORMATION 1

Compressor

Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Trouble shooting )

Does not start up

Is there open or loose connection cable?

Check Filter PCB, Main PCB, connection of Compressor,and winding resistance. (Refer to the next page).

>> If there is no failure, the defect of Compressor is considered (Locked compressor due to clogged dirt or less oil)

Replace Compressor

Stops soon after starting up

Is there open or loose connection cable?

Is Gas Pipe Valve open? (Low Pressure is too low)

Check if Refrigerant is leaking. (Recharge Refrigerant)

Check if Strainer is clogged. (PARTS INFORMATION 4)

>> If there is no failure, the defect of Compressor can be considered. (Compression part broken or valve defective.)

Abnormal noise

Defective Compressor can be considered. (due to inside dirt clogging or broken component)

Check if vibration noise by loose bolt or contact noise of piping is happening.

07-26

7-4 SERVICE PARTS INFORMATION

MPa MPa

SERVICE PARTS INFORMATION 2

Check Point 1 : Check Connection

UU(RED)(RED)

V V (WHITE)(WHITE)WW

(BLACK)(BLACK)

Terminal cover opened

MAIN PCB

Check Point 2 : Check Winding Resistance

Check Point 3 : Replace Main PCB

W304 (TM304)

W305 (TM305)

W303 (TM303)

RED

WHITE

BLACK

Compressor

Inverter Compressor

Check terminal connection of Compressor (loose or incorrect wiring)

Check connection of Main PCB (Loose or incorrect wiring)

Check winding resistance of each terminal

If the resistance value is 0 or infinite, replace Compressor.

If the symptom does not change with above Check 1, 2, replace Main PCB.

Resistance Value :

0.88 (For AB*30/ 36LBAG)

0.188 (For AB*45LBAG) at 20°C

07-27

SERVICE PARTS INFORMATION 3

Check Point 1 : Check Open or Short-circuit and Diode (D1)

Check Point 2 : Check the Output DC voltage (between P and N1)

L2L1

Power factor control

(+)

( )

Check the Output DC voltage (between P and N1) of compressor stopping and operating.

If it is abnormal,replace ACTIVE FILTER MODULE

Active Filter Module

Remove connector, check the open or short-circuit and the diode in the module

>> If the output voltage of compressor operating is less than the output voltage of compressor stopping, Active Filter Module is detective. >> Replace Active Filter Module

07-28

Terminal

Resistance value

L1,L2

Control Box

(+)

( )

Tester(+) Tester(-)

Check the open or short-circuit

Check the diode

360k

720k

1.65M /

20%

360k

20%

(Ref. value 1)

1.14M

(Ref. value 2)

1.01M /

(Ref. value 1)

761k

(Ref. value 2)

Terminal

Resistance value

Tester(+) Tester(-)

1.32M /

(Ref. value 1)

663k

(Ref. value 2)

1.01M /

(Ref. value 1)

762k

(Ref. value 2)

Ref. value 1 Specifications for Multimeter Manufacturer : FLUKE Model name : FLUKE11 Power source : DC9V.

Ref. value 2 Specifications for Multimeter Manufacturer : Sanwa Model name : PM3 Power source : DC3V.

SERVICE PARTS INFORMATION 4

Check Point 2 : Check Coil of EEV

Yellow - Brown

Orange - Red

Blue - Brown

White - Red

Read wire

46 4

Resistance value

Check Point 1 : Check Connections

Check Point 5 : Check Opening and Closing Operation of Valve

Check Point 3 : Check Voltage from Main PCB.

Check Point 4 : Check Noise at start up

Pipe (In)

Pipe (Out)

Hi TEMP.

Pipe (In)

Hi TEMP.

Normal TEMP.

CLOSE Example : Hot Gas

OPEN Example : Hot Gas

Pipe (Out)

Hi TEMP.

Pipe (In) Pipe (Out)

Check Point 6 : Check Strainer

CN27

EXPANSION VALVE COIL

RED BROWN BLUE ORANGE YELLOW WHITE

1 2 3 4 5 6

at 20°C

Outdoor unit Electronic Expansion Valve ( EEV )

Check connection of connector (CN27) ( Loose connector or open cable )

Remove connector, check each winding resistance of Coil.

If Resistance value is abnormal, replace EEV.

Remove Connector and check Voltage (DC12V)

If it does not appear, replace Main PCB.

Turn on Power and check operation noise.

If an abnormal noise does not show, replace Main PCB.

When Valve is closed, it has a temp. difference between Inlet and Outlet.

If it is open, it has no temp. difference between Inlet and Outlet.

Strainer normally does not have temperature difference between inlet and outlet as shown in , but if there is a difference as shown in , there is a possibility of inside clogged. In this case, replace Strainer.

07-29

SERVICE PARTS INFORMATION 5

Check Point :

22.8 10%

31.9 10%

Resistance value

(AC)

Thermal protector

115 125°C

1 3

The connector inserting numbers

2 3

at 20°C

Indoor Unit Fan Motor

Check each winding resistance of the motor

If Resistance value is abnormal, replace motor.

07-30

8 . APPENDING DATA

R410A

INVERTER

Large Ceiling type

08-01

MODEL : AB*30/ 36LBAG / AO*30/ 36LMBWL

MODEL : AB*45LBAG / AO*45LJBYL

COOLING

HEATING

8-1. CAPACITY TABLE

8. APPENDING DATA

AFR: Air flow rate (m3/min)

TC : Total capacity (kW)

SHC: Sensible Heat capacity (kW)

PI : Power Input (kW)

AFR: Air flow rate (m3/min)

TC : Total capacity (kW)

SHC: Sensible Heat capacity (kW)

PI : Power Input (kW)

AFR 27.7

(°CDB) TC SHC PI TC SHC PI TC SHC PI TC SHC PI T C SHC PI TC SHC PI TC SHC PI TC SHC PI

-10 6.53 5.57 1.51 6.95 5.42 1.57 7.09 5.88 1.59 7.35 6.27 1.62 7.48 6.21 1.64 7. 73 6.07 1.66 7.84 6.00 1.67 7.95 6.43 1.68

0 7.19 5.97 1.28 7.82 5.93 1.31 8.02 6.39 1.32 8.44 6.82 1.34 8.65 6.78 1.34 9.08 6.68 1.36 9.28 6.63 1.36 9.49 7.07 1.37

10 6.43 5.52 1.56 7.01 5.45 1.60 7.19 5.93 1.61 7.56 6.36 1.63 7.75 6.31 1.64 8.11 6.22 1.66 8.29 6.16 1.67 8.46 6.60 1.67

20 8.13 6.39 1.88 9.04 6.41 1.89 9.36 6.92 1.88 10.01 7.41 1.88 10.35 7.40 1.88 11.04 7.36 1.87 11.39 7.33 1.86 11.73 7.79 1.86

30 7.02 5.82 2.28 7.87 5.85 2.30 8.15 6.36 2.31 8.74 6.86 2.32 9.05 6.85 2.32 9.67 6.81 2.32 9.99 6.79 2.32 10.29 7.26 2.31

35 7.72 6.18 3.36 8.68 6.24 3.44 9.01 6.76 3.46 9.65 7.25 3.43 10.00 7.25 3.45 10.73 7.23 3.48 11.03 7.19 3.43 11.40 7.66 3.44

40 5.97 5.28 3.30 6.74 5.33 3.30 7.01 5.89 3.30 7.56 6.36 3.30 7.85 6.35 3.30 8.35 6.31 3.30 8.65 6.29 3.30 8.94 6.77 3.30

43 5.41 5.01 3.30 6.14 5.05 3.30 6.39 5.58 3.30 6.90 6.09 3.30 7.17 6.08 3.30 7.64 6.04 3.30 7.92 6.03 3.30 8.19 6.51 3.30

15 °CWB

16 °CWB

18 °CWB

19 °CWB

26 °CDB

27 °CDB

29 °CDB

30 °CDB

32 °CDB

21 °CWB

18 °CDB

12 °CWB

21 °CDB

22 °CWB

23 °CWB

Outdoor temperature

23 °CDB

Indoor temperature

AFR 27.7

(°CDB)

(°CWB)

TC PI TC PI TC PI TC PI TC PI TC PI TC PI

-10 -11 5.83 2.44 5.72 2.49 5.58 2.54 5.35 2.64 5.20 2.70 5.05 2.76 4.81 2.85

-4 -6 6.74 2.57 6.63 2.63 6.51 2.68 6.27 2.78 6.11 2.84 5.94 2.91 5.69 3.01

1 -1 7.77 2.69 7.66 2.75 7.53 2.81 7.26 2.91 7.08 2.99 6.89 3.06 6.61 3.17

7 6 11.55 3.35 11.39 3.43 11.20 3.50 10.79 3.64 10.52 3.73 10.24 3.83 9.79 3.97

12 10 12.60 3.45 12.41 3.53 12.21 3.61 11.77 3.76 11.46 3.85 11.13 3.95 10.63 4.10

18 13 13.08 3.40 12.76 3.42 12.44 3.43 11.83 3.39 11.42 3.41 11.01 3.43 10.35 3.42

20 15 11.90 2.94 11.66 2.96 11.40 2.97 10.93 2.96 10.63 2.96 10.20 2.92 9.56 2.91

24 17 12.38 2.98 12.02 2.94 11.75 2.95 11.26 2.94 10.96 2.94 10.62 2.95 9.45 2.94

30 °CDB

Outdoor temperature

Indoor temperature

16 °CDB

18 °CDB

20 °CDB

23 °CDB

25 °CDB

27 °CDB

COOLING

HEATING

AFR 33.3

(°CDB)

(°CWB)

TC PI TC PI TC PI TC PI TC PI TC PI TC PI

-15 -16 8.53 3.78 8.35 3.84 8.24 4.14 7.86 4.14 7.75 4.60 7.45 4.60 7.07 4.60

-10 -11 10.50 4.20 10.28 4.27 10.03 4.34 9.68 4.46 9.55 4.60 9.17 4.60 8.71 4.60

-4 -6 12.45 4.38 12.18 4.47 11.91 4.54 11.42 4.60 11.06 4.60 10.71 4.60 10.12 4.60

1 -1 14.35 4.60 13.97 4.60 13.59 4.60 12.94 4.60 12.45 4.60 12.04 4.60 11.36 4.60

7 6 16.74 4.60 16.24 4.60 16.00 4.60 15.12 4.60 14.50 4.60 13.85 4.60 12.99 4.60

12 10 17.66 4.60 17.13 4.60 16.59 4.60 15.89 4.60 15.22 4.60 14.68 4.60 13.73 4.60

18 13 18.47 4.60 18.08 4.60 17.52 4.60 16.70 4.60 16.15 4.60 15.52 4.60 14.48 4.60

20 15 18.20 4.60 17.71 4.60 17.33 4.60 16.53 4.60 15.82 4.60 15.28 4.60 14.32 4.60

24 17 17.50 4.60 17.01 4.60 16.62 4.60 15.82 4.60 15.11 4.60 14.61 4.60 13.62 4.60

25 °CDB

27 °CDB

30 °CDB

Outdoor temperature

Indoor temperature

16 °CDB

18 °CDB

20 °CDB

23 °CDB

AFR 33.3

(°CDB) TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI

-15 10.06 8.70 2.04 10.59 9.45 2.06 11.13 10.24 2.08 12.07 11.58 2.11 12.55 11.61 2.13 13.50 11.65 2.17 13.99 11.67 2.19 14.49 12.59 2.20

-10 12.00 9.50 2.43 12.64 10.33 2.45 12.97 11.25 2.46 13.63 12.06 2.49 13.95 11.97 2.51 14.57 11.75 2.53 14.86 11.61 2.54 15.12 12.39 2.55

0 11.01 8. 66 3.02 11.59 9.41 3.05 11.86 10.31 3.07 12.42 11.10 3.11 12.69 11.00 3.13 13.23 10.81 3.15 13.48 10.71 3.16 13.73 11.53 3.17

10 10.47 8.42 3.33 11.02 9.16 3.36 11.30 10.06 3.38 11.85 10.87 3.42 12.13 10.79 3.43 12.66 10.60 3.46 12.94 10.52 3.48 13.19 11.35 3.49

20 12.61 9.37 3.51 13.27 10.18 3.53 13.69 11.13 3.53 14.54 12.03 3.52 14.99 11.99 3. 52 15.91 11.94 3.50 16.33 11.89 3.48 16.78 12.76 3.47

30 11.13 8.71 4.23 11.71 9.47 4.24 12.12 10.42 4.25 12.95 11.32 4.26 13.37 11.28 4.27 14.23 11.18 4.27 14.66 11.13 4.27 15.06 11.99 4.27

35 11.10 8.70 5.13 11.68 9.46 5.13 12.09 10.41 5.16 12.86 11.29 5.13 14.00 11.25 5.15 14.02 11.40 5.18 14.43 11.04 5.13 14.82 11.91 5.15

40 9.61 7.92 5.00 10.12 8.60 5.00 10.37 9.48 5.00 10.97 10.31 5.00 11.34 10.32 5.00 12.55 10.23 5.00 12.29 10.22 5.00 12.63 11.08 5.00

43 8.82 7.57 5.00 9.28 8.23 5.00 9.62 9.16 5.00 10.26 10.01 5.00 10.63 9.98 5.00 11.18 9.85 5.00 11.51 9.80 5.00 11.84 10.64 5.00

19 °CWB

30 °CDB

Outdoor temperature

26 °CDB

18 °CWB

21 °CDB

23 °CDB

15 °CWB

16 °CWB

18 °CDB

12 °CWB

Indoor temperature

27 °CDB

29 °CDB

32 °CDB

21 °CWB

22 °CWB

23 °CWB

08-02

MODEL : AB*30/ 36LBAG / AO*30/ 36LMBWL

Indoor temperature

Indoor humidity

Outdoor temperature

Cooling

Dry

18 to 32°C

About 80% or less

-10 to 43°C

Heating

16 to 30°C

-10 to 24°C

Operation Range

Mode

MODEL : AB*45LBAG / AO*45LJBYL

Indoor temperature

Indoor humidity

Outdoor temperature

Cooling

Dry

18 to 32°C

About 80% or less

-15 to 43°C

Heating

16 to 30°C

-15 to 24°C

Operation Range

Mode

8-2. OPERATION RANGE

08-03

8-3. ELECTRIC CHARACTERISTICS

Indoor unit

Outdoor unit

Voltage V

Frequency Hz

Cooling Heating Cooling Heating

Current A 13.1 12.7 18.0 14.2

Input kW 3.00 2.90 4.12 3.26

Max Operating Current A 15.2 15.3 18.3 18.1

Starting Current A

Main Fuse (Circuit breaker) Current A

Power Cable

*2)Limited wiring length m

Input kW

Full Load Amp. A

Input kW

Full Load Amp. A

Model Name

AB 30LBAG AB 36LBAG

AO 30LMBWL AO 36LMBWL

Power Supply

230

Rated Value

Mode

*1) Wiring Spec

3.5

Indoor Fan Motor

0.22

1.0

0.6

Outdoor Fan Motor

0.13

0.131930

Indoor unit

Outdoor unit

Voltage V

Frequency Hz

Cooling Heating

Current A 19.5 18.5

Input kW 4.45 4.25

Max Operating Current A 22.6 20.0

Starting Current A

Main Fuse (Circuit breaker) Current

Power Cable

*2)Limited wiring length m

Input kW

Full Load Amp. A

Input kW

Full Load Amp. A

*1) Wiring Spec : Selected Sample (Selected based on Japan Electrotechnical Standard

and Codes Committee E0005)

*2) Limited Wiring length : This is the wiring length in case voltage descent is less than 2%.

When the wiring length becomes long, please select the wiring of a more larger diameter.

Model Name

Outdoor Fan Motor

0.067 x 2

0.34 x 2

Indoor Fan Motor

0.23

1.35

6.0

Rated Value

Mode

*1) Wiring Spec

30 27

Power Supply

230

AB 45LBAG

AO 45LJBYL

08-04

OUTDOOR UNIT

PROTECTION FORM AO*30LMBWL AO*36LMBWL

FUSE (SIDE OF POWER SUPPLY TERMINAL) - 25A 250V 25A 250V

FUSE (SIDE OF INDOOR UNIT) - 10A 250V 10A 250V

- 3.15A 250V 3.15A 250V

- 5A 250V 5A 250V

FAN MOTOR PROTECTOR THERMAL PROTECTOR 150±5°C OFF 150±5°C OFF

HIGH PRESSURE PROTECTION PRESSURE SWITCH

OFF:4.2±0.1MPa ON:3.2±0.15MPa

OFF:4.2±0.1MPa

ON:3.2±0.15MPa

DISCHARGE THERMISTOR THERMAL PROTECTOR

OFF:120±5°C

ON:80±5°C

OFF:120±5°C

ON:80±5°C

COMPRESSOR THERMISTOR THERMAL PROTECTOR

OFF:130±5°C

ON:80±5°C

OFF:130±5°C

ON:80±5°C

FUSE ON MAIN PCB

INDOOR UNIT

PROTECTION FORM AB*30LBAG AB*36LBAG

PCB FUSE -

FAN MOTOR PROTECTION

PROTECTION FORM AO*45LJBYL

FUSE (SIDE OF INDOOR UNIT TERMINAL)

- 10A 250V

- 3.15A 250V

3.15A 250V

- 5A 250V

FAN MOTOR PROTECTOR THERMAL PROTECTOR 150±5°C OFF

120±5°C OFF

HIGH PRESSURE PROTECTION PRESSURE SWITCH

OFF:4.2±0.1MPa ON:3.2±0.15MPa

DISCHARGE THERMISTOR THERMAL PROTECTOR

OFF:120±5°C

ON:80±5°C

COMPRESSOR THERMISTOR THERMAL PROTECTOR

THERMAL PROTECTOR

PROTECTION FORM AB*45LBAG

PCB FUSE -

FAN MOTOR PROTECTION

3.15A 250V

120±5°C OFF

THERMAL PROTECTOR

OFF:130±5°C

ON:80±5°C

FUSE ON MAIN PCB

8-4. SAFETY DEVICE

08-05

Indoor unit control circuit board

SWITCH POSITION

Auto restart validity / invalidity

Room temperature correct coefficient

Forbidden

Remote control unit signal code

INDOOR UNIT

DIP SW

JM3

Jumper Wire

JM1

JM2

SW1

ON OFF

3 2 1

JM1

JM2

JM3

8-5. FUNCTION SETTING

8-5-1 INDOOR UNIT

08-06

DIP SWITCH SETTING

JUMPER WIRE SETTING

Auto restart function can be selected by turning this switch ON/OFF.

AUTO RESTART SETTING

SW1-1. Auto restart setting

( Factory setting)

Decide the heating temperature correct coefficient vale of heating.

TEMPERATURE CORRECTION

SW1-2, 1-3. Room temperature correct coefficient of heating.

( Factory setting)

SW 1-1

SW state

OFF

Invalidity

Validity

0 deg

cooling

-2 deg

SW 1-2

SW 1-3

0 deg

heating

dry

-2 deg

-2 degONONONOFF

OFF

+2 deg

-2 deg

OFF

SW state

-2 deg

OFF

0 deg

+4 deg

( Factory setting)

Remote control unit signal code

JM 1, 2, 3 setting forbidden

Jumper wire

JM2 JM3

connect connect

connect Disconnect

Disconnect connect

Disconnect Disconnect

08-07

Pump down switch

Change current capacity

No use (OFF)

OUTDOOR UNIT

DIP SW 1

PUSH SW

DIP SW 1

OFF ON

Outdoor unit control circuit board

SWITCH POSITION

8-5-2 OUTDOOR UNIT ( AO*30/ 36LMBWL )

08-08

DIP SWITCH SETTING

Current capacity setting

*1=36000BTU model's factory setting (AO*36LMBWL) *2=30000BTU model's factory setting (AO*30LMBWL)

13.5A

12.0A

DIP-SW1

CURRENT

(MAX.)

18.0A *1

15.0A *2

OFF

OFFONON

OFF

ON23

OFF

PUSH SWITCH SETTING

Press the push-button switch, and "PUMP DOWN OPERATION" is starting.

SW2 setting

08-09

Pump down switch

Change current capacity

No use (OFF)

OUTDOOR UNIT

DIP SW 1

PUSH SW

DIP SW 1

OFF ON

Outdoor unit control circuit board

SWITCH POSITION

8-5-3 OUTDOOR UNIT ( AO*45LJBYL )

08-10

DIP SWITCH SETTING

Current capacity setting

*1=54000BTU model's factory setting *2=45000BTU model's factory setting (AO*45LJBYL)

18.0A

15.5A

DIP-SW1

CURRENT

(MAX.)

23.5A *1

20.0A *2

OFF

OFFONON

OFF

ON23

OFF

PUSH SWITCH SETTING

Press the push-button switch, and "PUMP DOWN OPERATION" is starting.

SW2 setting

9 . INSTALLATION MANUAL

R410A

INVERTER

Large Ceiling type

SPLIT TYPE AIR CONDITIONER

INSTALLATION INSTRUCTION SHEET

(PART NO. 9366160052)

For authorized service personnel only.

WARNING

This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.

CAUTION

This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or damage to property.

This air conditioner uses new refrigerant HFC (R410A).

The basic installation work procedures are the same as conventional refrigerant models. However, pay careful attention to the following points:

1 Since the working pressure is 1.6 times higher than that of conventional refrigerant models, some of the piping and

installation and service tools are special. (See the table below.) Especially, when replacing a conventional refrigerant model with a new refrigerant R410A model, always replace the conventional piping and flare nuts with the R410A piping and flare nuts.

2 Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with

conventional refrigerant and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A is 1/2 UNF 20 threads per inch.]

3 Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with refrigerant models. Also, when

storing the piping, securely seal the openings by pinching, taping, etc.

4 When charging the refrigerant, take into account the slight change in the composition of the gas and liquid phases, and

always charge from the liquid phase side whose composition is stable.

5 When moving, if the compressor stops during pump down, close the valve immediately.

Special tools for R410A

Copper pipes

- Continued on back -

Refrigerant

R410A

Contents of change

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed. It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm

) for high pressure. –0.1 to

3.8 MPa (–76 cmHg to 38 kgf/cm

) for low pressure. To increase pressure resistance, the hose material and base size were changed. A conventional vacuum pump can be used by installing a vacuum pump adapter. Special gas leakage detector for HFC refrigerant R410A.

Tool name

Gauge manifold

Charge hose Vacuum pump

Gas leakage detector

Ceiling Suspension Type

CONNECTION PIPE REQUIREMENT

ELECTRICAL REQUIREMENT

••

• Electric wire size:

2. BENDING PIPES

CAUTION

1 To prevent breaking of the pipe, avoid sharp bends.

Bend the pipe with a radius of curvature of 150 mm or over.

2 If the pipe is bent repeatedly at the same place, it will

break.

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

0.80 mm

1.00 mm

1.20 mm

Pipe outside diameter

Thickness

Thicknesses of Annealed Copper Pipes (R410A)

SELECTING THE MOUNTING POSITION

Decide the mounting position with the customer as follows:

INSTALLATION PROCEDURE

CAUTION

Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks. Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only) In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 15 mm or thicker and if the expected humidity exceeds 80%, use heat insulation that is 20 mm or thicker. If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation. In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).

••

• Use pipe with water-resistant heat insulation.

INDOOR UNIT

(1) Install the indoor unit level on a strong wall which is not subject to

vibration.

(2) The inlet and outlet ports should not be obstructed : the air should be

able to blow all over the room. (3) Do not install the unit where it will be exposed to direct sunlight. (4) Install the unit where connection to the outdoor unit is easy. (5) Install the unit where the drain pipe can be easily installed. (6) Take servicing, etc., into consideration and leave the spaces shown

in the figure. Also install the unit where the filter can be removed.

WARNING

Select installation locations that can properly support the weight of the indoor and outdoor units. Install the units securely so that they do not topple or fall.

CAUTION

1 Do not install where there is the danger of combustible gas leakage.

2 Do not install the unit near heat source of heat, steam, or flammable gas.

3 If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit.

[FOR HALF CONCEALED INSTALLATION]

Ceiling panel

INDOOR UNIT

80 mm or over

150 mm or over

10 mm or over

PREPARING INDOOR UNIT

INSTALLATION

REMOVE THE INTAKE GRILLE AND SIDE COVER

(1) Remove the two Air filters. (2) Remove the two Intake grilles.

•For 4 Left rear drain and 5 Left drain: Remove air filters and intake

grilles at three places. (Refer to “2INDOOR UNIT INSTALLATION”.)

(3) Remove the Side cover A (Right side) and Side cover B (Right and

Left side).

•For 5 Left drain : Remove both the Side cover A (Right and Left

side). (Refer to “2 INDOOR UNIT INSTALLATION”.)

(4)

This air conditioner can be set up to intake fresh air. For information about how to install for fresh-air intake, refer to “0 FRESH-AIRINTAKE”.

INDOOR UNIT INSTALLATION

You can use the accessory template to help you install the indoor unit. The template helps you determine the appropriate locations for suspension bolts and pipe opening (drain pipe and connection cord).

[For Half-Concealed Installation]

••

• Suspension-bolt pitch should be as shown in the figure.

2. SELECT PIPING DIRECTION

Select connection piping and drain piping directions.

[FOR 4 Left rear piping, 5 Left piping]

••

• Transfer the Drain cap and Drain cap seal.

Drain cap seal

Drain cap

Indoor unit Drain pan

Drain cap seal

Drain cap

Push cap all the way on (as far as it will go).

[If using anchor bolts]

(1) Drill holes for anchor bolts at the locations at which you will set the

suspension bolts. Note that anchor bolts are M10 bolts (to be obtained locally).

(2) Install the anchor bolts, then temporarily attach special nut “B” (in-

cluded) and a locally-procured M10 nut to each of the bolts.

Anchor-Bolt Strength 980 to 1470 N (100 to 150 kgf)

4. INSTALLING THE INDOOR UNIT

(1) Lift unit so that suspension bolts pass through the suspension fittings

at the sides (four places), and slide the unit back.

Wall

Ceiling

M10 Anchor Bolt (Obtained locally)

Special nut B (Included)

M10 Nut (Obtained locally)

10 to 15 mm

1. LOCATION OF CEILING SUSPENSION BOLTS

30 mm Suspension bolt pitch 1600 mm

Dimensions (Space Required for Installation)

30 mm

10 mm 155 mm

300 mm

INDOOR UNIT (TOP VIEW)

INDOOR UNIT

Suspension bolt should extend outward 30 to 75 mm.

3. DRILLING THE HOLES AND ATTACHING THE SUSPENSION BOLTS

(1) Drill ø25 mm holes at the suspension-bolt locations. (2) Install the bolts, then temporarily attach Special nuts A and B and a

normal M10 nut to each bolt. (The two special nuts are provided with the unit. The M10 nut must be obtained locally.) Refer to the figure.

Bolt Strength 980 to 1470 N (100 to 150 kgf)

Ceiling panel

Special nut A (Included)

Special nut B (Included)

M10 Nut (Obtained locally)

10 to 15 mm

INDOOR UNIT

Wall

Ceiling panel

(2) Fasten the indoor unit into place by tightening-up the special “B” bolts

and the M10 nuts. Make sure that unit is secure and will not shift back and forth.

[For Half-Concealed Installation]

When installing the indoor unit in a semi-concealed orientation, make sure to reinforce the insulation of the unit on all sides. Drops of water may fall from the unit if it is not thoroughly insulated.

Glass wool insulate (10 to 20 mm thick)

INDOOR UNIT

(Top view)

Wall

Ceiling panel

CAUTION

Install the drain pipe in accordance with the instructions in this installation instruction sheet and keep the area warm enough to prevent condensation. Problems with the piping may lead to water leaks.

••

• Install the drain pipe with downward gradient (1/50 to 1/100) and so

there are no rises or traps in the pipe.

••

• Use general hard polyvinyl chloride pipe (VP25) [outside diameter

38 mm].

••

• During installation of the drain pipe, be careful to avoid applying

pressure to the drain port of the indoor unit.

••

• When the pipe is long, install supporters.

••

• Do not perform air bleeding.

••

• Always heat insulate (8 mm or over thick) the indoor side of the drain

pipe.

GOOD

BAD BAD

Drain pipe

Arrange the drain pipe lower than this portion.

Lifted up

Wave

End in water

Supporter

1.5 to 2 m

(1) Install insulation for the drain pipe.

Cut the included insulation material to an appropriate size and adhere it to the pipe.

Drain pipe

Insulation for drain pipe (To be obtained locally. Length should be at least 8 mm.)

Drain pipe insulation (accessories)

Indoor unit (drain port)

(2) If “1 Right rear piping” : fasten the drain pipe with VT wire so that the

pipe slopes correctly within the indoor unit.

Indoor unit (rear view)

VT wire

Drain hose

Drain pipe insulation

Drain pipe

No gap

10 mm or over

Indoor unit

3. CONNECTION PIPES

Indoor unit

(1) Detach the caps and plugs from the pipes.

CAUTION

1 Be sure to apply the pipe against the port on the in-

door unit correctly. If the centering is improper, the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.

2 Do not remove the flare nut from the indoor unit pipe

until immediately before connecting the connection pipe.

(2) Centering the pipe against port on the indoor unit, turn the flare nut

with your hand.

To prevent gas leakage, coat the flare surface with alkylbenzene oil (HAB). Do not use mineral oil.

(3) Remove the filter guide.

Indoor unit

Filter guide

(4) Attach the connection pipe.

Connection pipe (Liquid)

Indoor unit

Connection pipe (Gas)

•For 2 Top piping and 3 Right piping connections, use the Auxiliary

pipe (Gas pipe) provided.

2 Top piping

Connection pipe (Gas)

Indoor unit (rear)

Connection pipe (Gas)

3 Right piping

Auxiliary pipe (Gas pipe)

(5) When the flare nut is tightened properly by your hand, use a torque

wrench to finally tighten it.

Torque wrench

Holding spanner

Body side

CAUTION

Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to tighten the flare nut correctly.

Flare nut Tightening torque

6.35 mm (1/4 in.) dia.

9.52 mm (3/8 in.) dia.

12.70 mm (1/2 in.) dia.

15.88 mm (5/8 in.) dia.

19.05 mm (3/4 in.) dia.

Ceiling

INDOOR UNIT

80 mm or over

Ceiling

150 mm or over

10 mm or over

1Right rear piping

5Left piping

(Drain pipe only)

4Left rear piping

(Drain pipe only)

2Top piping

(Connection pipe only)

3Right

piping

Cut off the piping outlet cutting groove with a hacksaw, etc.

INDOOR UNIT (TOP VIEW)

Air filter

Intake grille

Tapping screw

INDOOR UNIT

Side cover A (Right side)

Side cover B

(Left side)

Side cover B (Right side)

Diameter

Gas

15.88 mm (5/8 in.)

Drilling position for Suspension bolt

Ceiling

Wall

Template

Drilling position for piping

40 mm Ceiling Opening: 1580 mm 40 mm

Ceiling panel

Ceiling Opening: 640 mm

15 mm

Suspension bolt should extend outward 30 to 50 mm.

INDOOR UNIT

Ceiling panel

CAUTION

In order to check the drainage, be sure to use a level during installation of the indoor unit. If the installation site of the indoor unit is not level, water leakage may occur.

5. DRAIN PIPING

CAUTION

The maximum lengths of this product are shown in the following table. If the units are further apart than this, correct operation can not be guaranteed.

The pipes are shaped by your hands. Be careful not to collapse them. Do not bend the pipes in an angle more than 90°.

When pipes are repeatedly bend or stretched, the material will harden,

making it difficult to bend or stretch them any more. Do not bend or

stretch the pipes more than three times.

14 to 18 N·m (140 to 180 kgf·cm)

33 to 42 N·m (330 to 420 kgf·cm)

50 to 62 N·m (500 to 620 kgf·cm)

63 to 77 N·m (630 to 770 kgf·cm)

100 to 110 N·m (1000 to 1100 kgf·cm)

••

• Always use H07RN-F or equivalent to the connection cord.

••

• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units. (Both indoor unit and outdoor unit)

It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may become blocked with contaminants. As an air conditioner using R410A incurs pressure higher than when using conventional refrigerant, it is necessary to choose adequate materials. Thicknesses of copper pipes used with R410A are as shown in the table. Never use copper pipes thinner than that in the table even when it is available on the market.

Liquid

9.52 mm (3/8 in.)

MIN.

1.0

Connection cord (mm )

MAX.

2.5

4. HEAT INSULATION ON THE PIPE JOINTS (INDOOR SIDE ONLY)

After checking for gas leaks, insulate by wrapping insulation around the two parts (Gas and Liquid) of the indoor unit coupling, using the coupler heat insulation. After installing the coupler heat insulation, wrap both ends with vinyl tape so that there is no gap. Secure both ends of the heat insulation material using nylon fasteners. And finally fix connection pipe (Liquid) to connection pipe (Gas) by rolling vinyl tape over coupler heat insulation (Gas) and coupler heat insulation (Liquid).

Indoor unit

Coupler heat insulation (Large)

Connection pipe (Gas)

Connection pipe (Liquid)

Coupler heat insulation (Small)

Nylon fastener (Large)

No gap

Coupler heat insulation

Nylon fastener (Small)

Connection pipe (Gas)

Connection pipe (Liquid)

Vinyl tape

• When using an auxiliary pipe, make sure that the fastener used is insu-

lated in the same way.

CAUTION

There should be no gaps between the insulation and the product.

WARNING

1 Before starting work, check that power is not being

supplied to the indoor unit and outdoor unit.

2 Match the terminal board numbers and connection

cord colors with those of the outdoor unit. Erroneous wiring may cause burning of the electric parts.

3 Connect the connection cords firmly to the terminal

board. Imperfect installation may cause a fire.

4 Always fasten the outside covering of the connection

cord with the cord clamp. (If the insulator is chafed, electric leakage may occur.)

5 Always connect the ground wire.

HOW TO CONNECT WIRING TO THE TERMINALS

A. For solid core wiring (or F-cable)

(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip

the insulation to about 25 mm to expose the solid wire.

(2) Using a screwdriver, remove the terminal screw(s) on the terminal

board.

(3) Using pliers, bend the solid wire to form a loop suitable for the

terminal screw.

(4) Shape the loop wire properly, place it on the terminal board and

tighten securely with the terminal screw using a screwdriver.

B. For strand wiring

(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip

the insulation to about 10 mm to expose the strand wiring.

(2) Using a screwdriver, remove the terminal screw(s) on the terminal

board.

(3) Using a round terminal fastener or pliers, securely clamp a round

terminal to each stripped wire end.

(4) Position the round terminal wire, and replace and tighten the

terminal screw using a screwdriver.

A. Solid wire

Strip 25 mm

Insulation

Loop

B. Strand wire

Strip 10 mm

Round terminal

Wire

Screw with special washer

Round terminal

Terminal board

Wire

Screw with special washer

Round terminal

Terminal block

ELECTRICAL WIRING

1. CONNECTION DIAGRAMS

3. INDOOR UNIT

Indoor unit

Control box

Tapping screw

(2) Remove the Cover A and install the Connection cord. (3) Reattach Cover A. Then fasten the control box back into its original

position using the two tapping screws.

Cover A

Control box

(4) After wiring is complete, clamp the Connection cord with the Cord

clamp.

2. CONNECTION CORD PREPARATION

Power supply cord or connection cord

Cable clip

Control box

Connection cord

Terminal board

Earth screw

Cord clamp

To outdoor unit

Connection cord

CAUTION

Use care not to mistake the power supply cord and connection wires when installing.

(1) Remove the two tapping screws and pull the control box downward.

60 mm

70 mm or more

For earth

(5) Attach the connection cord and cable clips. Make sure that they are

positioned so that they will not interfere with opening and closing of the intake grille or with removal and installation of the air filters.

Indoor unit side terminal

Power line

Control line

Outdoor unit

STANDARD PARTS

The following installation parts are furnished. Use them as required.

INDOOR UNIT ACCESSORIES

Q’ty

Name and Shape

Remote control unit

Battery (penlight)

Remote control unit holder

Tapping screw (ø3 × 12)

Drain hose insulation

VT wire

Coupler heat insulator (large)

Coupler heat insulator (small)

Nylon fastener

Special nut A (large flange)

Special nut B (small flange)

Installation template

Auxiliary pipe assembly

Application

Use for air conditioner operation

For remote control unit

For mounting the remote control unit

For remote control unit holder installation

Adhesive type 70 × 230

For fixing the drain hose L 280 mm

For indoor side pipe joint (Gas pipe)

For indoor side pipe joint (Liquid pipe)

For fixing the coupler heat insulator

For installing indoor unit

For positioning the indoor unit

For connecting the piping

Large

Small

OPTIONAL PARTS

The following options are available.

••

• DRAIN PUMP UNIT: UTR-DPB241 (P/N 9034087001)

CONNECTING THE PIPE

CAUTION

1 Do not use mineral oil on flared part. Prevent mineral

oil from getting into the system as this would reduce the lifetime of the units.

2 While welding the pipes, be sure to blow dry nitrogen

gas through them.

3 The maximum lengths of this product are shown in the

table. If the units are further apart than this, correct operation can not be guaranteed.

1. FLARING

(1) Cut the connection pipe to the necessary length with a pipe cutter. (2) Hold the pipe downward so that cuttings will not enter the pipe and

remove the burrs.

(3) Insert the flare nut (always use the flare nut attached to the indoor

and outdoor units respectively) onto the pipe and perform the flare processing with a flare tool. Use the special R410A flare tool, or the conventional flare tool.

When using conventional flare tools to flare R410A pipes, the dimension A should be approximately 0.5 mm more than indicated in the table (for flaring with R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the dimension A.

Pipe outside

diameter

Width across flats

of Flare nut

Width across flats

Check if [L] is flared uniformly and is not cracked or scratched.

Die

Pipe

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

0 to 0.5

Pipe outside diameter

Dimension A

(mm)

Flare tool for R410A, clutch type

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

9.1

13.2

16.6

19.7

24.0

Pipe outside diameter

Dimension B

(mm)

-0.4

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

17 mm

22 mm

26 mm

29 mm

36 mm

9366160052_IM_front.p65 15/9/05, 11:411

PART NO. 9366160052

REMOTE CONTROL UNIT

INSTALLATION

CAUTION

1 Check that the indoor unit correctly receives the

signal from the remote control unit, then install the remote control unit holder.

2 Select the remote control unit holder selection site by

paying careful attention to the following: Avoid places in direct sunlight. Select a place that will not be affected by the heat from a stove, etc.

1. REMOTE CONTROL UNIT HOLDER INSTALLATION

••

• Install the remote control unit holder to a wall or pillar with the tapping

screws.

Remote Control Unit holder fixing

Remote Control Unit mounting

Remote control unit holder

Tapping screws (small)

1 Set

2 Push

Remote control unit

2. SWITCHING REMOTE CONTROL UNIT SIGNAL CODE

• Remote control unit settings (1) Press the START/STOP button and display only the clock.

(2) Press the MASTER CONTROL button continuously for more than five

seconds to display the current signal code.

(3) Change the signal code with the

button ( ).

(4) Press the MASTER CONTROL button again to return to the clock

display and change the signal code.

JM1

JM2

JM3

Indoor unit Printed circuit board

FINISHING

(1) Install the filter guide. (2) Install the intake grilles. (3) Install side covers A and B (if the unit is installed in a half-concealed

orientation, only install side cover A).

(4) Install the air filters.

CUSTOMER GUIDANCE

Explain the following to the customer in accordance with the operating manual:

(1) Starting and stopping method, operation switching, temperature

adjustment, timer, air flow adjustment, and other remote control unit

operations. (2) Air filter removal and cleaning. (3) Give the operating manual and installation instruction sheet to the

customer.

TEST RUNNING

••

• Perform test operation and check items 1 and 2 below.

••

• For the operation method, refer to the operating manual.

••

• The outdoor unit may not run, depending on the room temperature.

In this case, the ‘TEST RUN’ signal is received during air conditioner operation (use a metallic object to short the two metal contacts under the battery compartment lid and send the ‘TEST RUN’ signal from the remote control unit).

••

• To end test operation, press the remote control unit START/STOP

button. (When the air conditioner is run by pressing the remote control unit TEST RUN button, the OPERATION and TIMER lamps will simultaneously flash slowly.)

(1) Is operation of each button on the remote control unit normal?

(2) Does each lamp light normally?

(3) Do not air flow direction flap and louvers operate normally?

(4) Is the drain normal?

AN ERROR DISPLAY

Operation can be checked by lighting and flashing of the display section OPERATION, TIMER and VERTICAL SWING lamps. Perform judgment in accordance with the following.

FRESH-AIR INTAKE

(1) Open up the knockout hole for the fresh-air intake, as shown in the

figure. (If using half-concealed installation, open up the top knockout hole instead.)

For half concealed installation

Indoor unit

CAUTION

1 When removing the cabinet (iron plate), be careful not

to damage the indoor unit internal parts and surrounding area (outer case).

2 When processing the cabinet (iron plate), be careful

not to injure yourself with burrs, etc.

(2) Fasten the round flange (optional) to the fresh-air intake, as shown in

the figure. (If using half-concealed installation, attach to the top.)

[After completing “2 INDOOR UNIT INSTALLATION”...]

(3) Connect the duct to the round flange.

(4) Seal with a band and vinyl tape, etc. so that air does not leak from the

connection.

Round duct (option parts)

Duct

SWING SWING TIMER

OPERATION

MANUAL

AUTO

VERTICAL SWING lamp (Orange)

TIMER lamp (Green)

OPERATION lamp (Red)

• Test running

When the air conditioner is run by pressing the remote control unit test run button, the OPERATION, TIMER and VERTICAL SWING lamps flash slowly at the same time.

• Error

The OPERATION, TIMER and VERTICAL SWING lamps operate as follows according to the error contents.

Indoor EEPROM abnormal

Outdoor EEPROM abnormal

Indoor room temperature sensor open

Indoor room temperature sensor shortcircuited

Indoor heat exchanger temperature sensor open

Indoor heat exchanger temperature sensor shortcircuited

Float switch operated

Indoor signal abnormal

Outdoor signal abnormal

Indoor fan abnormal

Outdoor power source connection abnormal

Outdoor heat exchanger temperature sensor open

Outdoor heat exchanger temperature sensor shortcircuited

Outdoor temperature sensor open

Outdoor temperature sensor shortcircuited

Outdoor discharge pipe temperature sensor or compressor temperature sensor open

Outdoor discharge pipe temperature sensor or compressor temperature sensor shortcircuited

Outdoor high pressure abnormal

Outdoor discharge pipe temperature or compressor temperature sensor abnormal

OPERATION

lamp (RED)

(2 times)

(3 times)

(4 times)

(5 times)

(6 times)

TIMER lamp

(GREEN)

(2 times)

(3 times)

(4 times)

(5 times)

(6 times)

(7 times)

SWING lamp

(ORANGE)

: 0.1s ON/0.1s OFF (flash) : OFF

: 0.5s ON/0.5s OFF (flash)

Jumper wire

JM3

Connect

Disconnect

Connect

Disconnect

Remote control unit

signal code

A (Primary setting)

JM2

Connect

Disconnect

Short the two metal contacts under the battery compartment lid.

Confirm the setting of the remote control unit signal code and the printed circuit board setting. If these are not confirmed, the remote control unit cannot be used to operate for the air conditioner.

Error contents

9366160052_IM_back.p65 1/9/05, 15:071

If the space is larger than that is stated, the condition

will be the same as that there are no obstacles.

CONNECTION PIPE REQUIREMENT

CAUTION

••

• Use pipe with water-resistant heat insulation.

CAUTION

The maximum lengths of this product are shown in the following table. If the units are further apart than this, correct operation can not be guaranteed.

ELECTRICAL REQUIREMENT

••

• Electric wire size and breaker capacity:

SELECTING THE MOUNTING POSITION

Decide the mounting position with the customer as follows:

WARNING

Select installation locations that can properly support the weight of the indoor and outdoor units. Install the units securely so that they do not topple or fall.

CAUTION

1 Do not install where there is the danger of combustible gas leakage.

2 Do not install the unit near heat source of heat, steam, or flammable gas.

3 If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit.

••

• Always use H07RN-F or equivalent to the connection cord.

••

• Install all electrical works in accordance to the standard.

••

• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units. (Both indoor unit and outdoor unit)

••

• Install the circuit breaker nearby the units.

WARNING

1 Install the unit where it will not be tilted by more than 3˚. However, do not install the unit with it tilted towards the side

containing the compressor.

2 When installing the outdoor unit where it may exposed to strong wind, fasten it securely.

(1) Install the outdoor unit in a location which can withstand the weight of the unit and vibration, and which can install horizontally. (2) Provide the indicated space to ensure good airflow. (3) If possible, do not install the unit where it will be exposed to direct sunlight.

(If necessary, install a blind that does not interfere with the airflow.)

(4) Do not install the unit near a source of heat, steam, or flammable gas. (5) During heating operation, drain water flows from the outdoor unit.

Therefore, install the outdoor unit in a place where the drain water flow will not be obstructed. (Reverse cycle model only)

(6) Do not install the unit where strong wind blows or where it is very dusty. (7) Do not install the unit where people pass. (8) Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain as much as possible. (9) Install the unit where connection to the indoor unit is easy.

INSTALLATION PROCEDURE

OUTDOOR UNIT

INSTALLATION

1. OUTDOOR UNIT PROCESSING

(1) Outdoor unit to be fasten with bolts at the four places indicated by the

arrows without fail.

(2) Fix securely with bolts on a solid block. (Use 4 sets of commercially

available M10 bolt, nut and washer.)

(3) Since the drain water flows out of the outdoor unit during heating

operation, install the drain pipe and connect it to a commercial 16 mm hose. (Reverse cycle model only)

(4) When installing the drain pipe, plug all the holes other than the drain

pipe mounting hole in the bottom of the outdoor unit with putty so there is no water leakage. (Reverse cycle model only)

Drain pipe mounting hole

Base

Drain pipe

Bottom side

Drain cap mounting place

Drain pipe mounting place

650 mm

4-ø 12 hole

370 mm

Bolt

Nut

Block

CAUTION

When the outdoor temperature is 0 °C or less, do not use the accessory drain pipe and drain cap. If the drain pipe and drain cap are used, the drain water in the pipe may freeze in extremely cold weather. (Reverse cycle model only)

(Continued to the next page)

CONNECTING THE PIPE

2. BENDING PIPES

CAUTION

1 To prevent breaking of the pipe, avoid sharp bends.

Bend the pipe with a radius of curvature of 150 mm or over.

2 If the pipe is bent repeatedly at the same place, it will

break.

CAUTION

1 Do not use mineral oil on flared part. Prevent mineral

oil from getting into the system as this would reduce the lifetime of the units.

2 While welding the pipes, be sure to blow dry nitrogen

gas through them.

3 The maximum lengths of this product are shown in the

table. If the units are further apart than this, correct operation can not be guaranteed.

1. FLARING

(1) Cut the connection pipe to the necessary length with a pipe cutter. (2) Hold the pipe downward so that cuttings will not enter the pipe and

remove the burrs.

(3) Insert the flare nut (always use the flare nut attached to the indoor

and outdoor units respectively) onto the pipe and perform the flare processing with a flare tool. Use the special R410A flare tool, or the conventional flare tool.

Pipe outside

diameter

Width across flats

of Flare nut

Width across flats

Check if [L] is flared uniformly and is not cracked or scratched.

Die

Pipe

3. CONNECTION PIPES

Outdoor unit

(1) Detach the caps and plugs from the pipes.

CAUTION

1 Be sure to apply the pipe against the port on the in-

door unit and the outdoor unit correctly. If the centering is improper, the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.

2 Do not remove the flare nut from the indoor unit pipe

until immediately before connecting the connection pipe.

(2) Centering the pipe against port on the outdoor unit, turn the flare nut

with your hand.

To prevent gas leakage, coat the flare surface with alkylbenzene oil (HAB). Do not use mineral oil.

(3) Tighten the flare nut of the connection pipe at the outdoor unit valve

connector.

(4) When the flare nut is tightened properly by your hand, use a torque

wrench to finally tighten it.

Torque wrench

Holding spanner

Body side

CAUTION

Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to tighten the flare nut correctly.

Flare nut Tightening torque

6.35 mm (1/4 in.) dia.

9.52 mm (3/8 in.) dia.

12.70 mm (1/2 in.) dia.

15.88 mm (5/8 in.) dia.

19.05 mm (3/4 in.) dia.

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

0 to 0.5

Pipe outside diameter

Dimension A

(mm)

Flare tool for R410A, clutch type

Pipe outside diameter

Dimension B

(mm)

-0.4

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

17 mm

22 mm

26 mm

29 mm

36 mm

The pipes are shaped by your hands. Be careful not to collapse them.

Do not bend the pipes in an angle more than 90

°.

When pipes are repeatedly bend or stretched, the material will harden,

making it difficult to bend or stretch them any more. Do not bend or

stretch the pipes more than three times.

14 to 18 N·m (140 to 180 kgf·cm)

33 to 42 N·m (330 to 420 kgf·cm)

50 to 62 N·m (500 to 620 kgf·cm)

63 to 77 N·m (630 to 770 kgf·cm)

100 to 110 N·m (1000 to 1100 kgf·cm)

3-way valve (Liquid)

Flare nut

Connection pipe (Liquid)

3-way valve (Gas)

Flare nut

Connection pipe (Gas)

Name and Shape Q’ty Application

For outdoor unit drain piping work (May not be supplied, depending on the model.)

For filling in a gap at the entrance of connection cords

Drain pipe

Drain cap

Insulation (seal)

STANDARD PARTS

The following installation parts are furnished. Use them as required.

• 30,000 BTU/h class

• 36,000 BTU/h class

• 45,000 BTU/h class

• 54,000 BTU/h class

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

9.1

13.2

16.6

19.7

24.0

Model Type

Power supply cord (mm

) Connection cord (mm2)

Breaker capacity (A)

MAX. MIN. MAX. MIN.

30,000 BTU/h class

4.0 3.5 2.5 1.5 30

36,000 BTU/h class

45,000 BTU/h class

6.0 5.3 3.5 2.5 30

54,000 BTU/h class

MAX.

50 m

70 m

Pipe length

MIN.

5 m 30 m

Maximum height (between indoor

and outdoor)

Model Type

Liquid Gas

30,000 BTU/h class

36,000 BTU/h class

9.52 mm (3/8 in.) 15.88 mm (5/8 in.)

45,000 BTU/h class

54,000 BTU/h class

Diameter

SPLIT TYPE AIR CONDITIONER

INSTALLATION INSTRUCTION SHEET

(PART NO. 9374995011)

WARNING

1 For the air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.

2 Connect the indoor unit and outdoor unit with the room air conditioner piping and cords available standards parts. This

installation instruction sheet describes the correct connections using the installation set available from our standard parts.

3 Installation work must be performed in accordance with national wiring standards by authorized personnel only.

4 Also, do not use an extension cord.

5 Do not turn on the power until all installation work is complete.

6 Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation.

7 There is not extra refrigerant in the outdoor unit for air purging.

8 Use a vacuum pump for R410A exclusively.

9 Using the same vacuum pump for different refrigerants may damage the vacuum pump or the unit.

0 Use a clean gauge manifold and charging hose for R410A exclusively.

A If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a flame, it

produces a toxic gas.

••

• Be careful not to scratch the air conditioner when handling it.

••

• After installation, explain correct operation to the customer, using the operating manual.

••

• Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or moved.

When there are obstacles at the back side.

4. VACUUM

(1) Remove the cap, and connect the gauge manifold and the vacuum

pump to the charging valve by the service hoses.

(2) Vacuum the indoor unit and the connecting pipes until the pressure

gauge indicates –0.1 MPa (–76 cmHg).

(3) When –0.1 MPa (–76 cmHg) is reached, operate the vacuum pump

for at least 60 minutes.

(4) Disconnect the service hoses and fit the cap to the charging valve to

the specified torque.

(5) Remove the blank caps, and fully open the spindles of the 2-way

and 3-way valves with a hexagon wrench [Torque: 6~7 N·m (60 to 70 kgf·cm)].

(6) Tighten the blank caps of the 2-way valve and 3-way valve to the

specified torque.

5. ADDITIONAL CHARGE

• 30,000 BTU/h class

• 36,000 BTU/h class Refrigerant suitable for a piping length of 15 m is charged in the outdoor unit at the factory. When the piping is longer than 15 m, additional charging is necessary. For the additional amount, see the table below.

20 to 25 N·m (200 to 250 kgf·cm)

25 to 30 N·m (250 to 300 kgf·cm)

30 to 35 N·m (300 to 350 kgf·cm)

35 to 40 N·m (350 to 400 kgf·cm)

10 to 12 N·m (100 to 120 kgf·cm)

Tightening torque

Gauge manifold

Service hose

Vacuum pump

Connecting pipe

Blank cap

Hexagon wrench

3-way valve

Charging port

Cap

Service hose with valve core

Outdoor unit

Use a 4 mm hexagon wrench.

Blank

cap

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Charging port cap

CAUTION

1 Do not purge the air with refrigerants, but use a vacuum

pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging!

2 Use a vacuum pump and gauge manifold and charg-

ing hose for R410A exclusively. Using the same vacuum for different refrigerants may damage the vacuum pump or the unit.

6. GAS LEAKAGE INSPECTION

CAUTION

1 When moving and installing the air conditioner, do not

mix gas other than the specified refrigerant R410A inside the refrigerant cycle.

2 When charging the refrigerant R410A, always use

an electronic balance for refrigerant charging (to measure the refrigerant by weight).

3 When charging the refrigerant,

take into account the slight change in the composition of the gas and liquid phases, and always charge from the liquid phase side whose composition is stable.

4 Add refrigerant from the charging valve after the

completion of the work.

5 If the units are further apart than the maximum pipe

length, correct operation can not be guaranteed.

Gas

Liquid

R410A

CAUTION

1 After connecting the piping, check the all joints for gas

leakage with gas leak detector.

2 When inspecting gas leakage, always use the vacuum

pump for pressure. Do not use nitrogen gas.

POWER

WARNING

1 The rated voltage of this product is 230 V a.c. 50 Hz.

2 Before turning on, verify that the voltage is within the

198 V to 264 V range.

3 Always use a special branch circuit and install a spe-

cial receptacle to supply power to the air conditioner.

4 Use a special branch circuit breaker and receptacle

matched to the capacity of the air conditioner. (Install in accordance with standard.)

5 Perform wiring work in accordance with standards

so that the air conditioner can be operated safely and positively.

6 Install a leakage special branch circuit breaker in

accordance with the related laws and regulations and electric company standards.

7 The circuit breaker is installed in the permanent wir-

ing. Always use a circuit that can trip all the poles of the wiring and has an isolation distance of at least 3 mm between the contacts of each pole.

CAUTION

1 The power source capacity must be the sum of the air

conditioner current and the current of other electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity.

2 When the voltage is low and the air conditioner is

difficult to start, contact the power company the voltage raised.

CAUTION

Use a clean gauge manifold and charging hose for R410A exclusively.

For authorized service personnel only.

This installation instruction sheet describes how to install the outdoor unit only. To install the indoor unit, refer to the installation instruction sheet included with the indoor unit.

250 mm

or more

250 mm

or more

300 mm

or more

100 mm

or more

When there are obstacles at the back and front sides.

When there are obstacles at the back, side(s), and top.

When there are obstacles at the back side with the installation of

more than one unit.

Pipe length

Model type

30,000 BTU/h class

None 200 g 600 g 1000 g 1400 g 40 g/m

36,000 BTU/h class

15 m 20 m 30 m 45 m g/m50 m

• 45,000 BTU/h class

• 54,000 BTU/h class Refrigerant suitable for a piping length of 20 m is charged in the outdoor unit at the factory. When the piping is longer than 20 m, additional charging is necessary. For the additional amount, see the table below.