Toshiba RAV-SM562MUT-E, RAV-SM452MUT-E User Manual

SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

<DIGITAL INVERTER>

FILE NO. A06-005

Revised: Jun, 2008

INDOOR UNIT

RAV-SM402MUT-E
RAV-SM452MUT-E
RAV-SM562MUT-E

This Service Manual describes contents of the new indoor unit.
For the outdoor unit, refer to the Service Manual with FILE NO. A05-001 and A07-003.

R410A

PRINTED IN JAPAN, Jun, 2008 ToMo

Adoption of New Refrigerant

This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.

WARNING

Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to
have a service person do it. Do not attempt it yourself.

The cleaning diagram for the air filter is there for the ser vice person, and not for the customer.

CONTENTS

1. SPECIFICATIONS ...................................................................................... 4

1-1. Indoor Unit........................................................................................................... 4

1-2. Outdoor Unit........................................................................................................ 9

1-3. Operation Characteristic Curve....................................................................... 11

1-4. Capacity Variation Ratio According to Temperature ...................................... 13

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ...................................... 14

2-1. Indoor Unit......................................................................................................... 14

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM .............................. 17

3-1. Indoor Unit......................................................................................................... 17

3-2. Outdoor Unit...................................................................................................... 18

4. WIRING DIAGRAM................................................................................... 21

4-1. Indoor Unit......................................................................................................... 21

5. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 23

5-1. Indoor Unit......................................................................................................... 23

6. REFRIGERANT R410A............................................................................ 24

6-1. Safety During Installation/Servicing ............................................................... 24

6-2. Refrigerant Piping Installation....................................................................... 24

6-3. Tools .................................................................................................................. 28

6-4. Recharging of Refrigerant................................................................................ 29

6-5. Brazing of Pipes................................................................................................ 30

6-6. Tolerance of Pipe Length and Pipe Head........................................................ 32

6-7. Additional Refrigerant Amount........................................................................ 34

6-8. Piping Materials and Sizes............................................................................... 36

6-9. Branch Pipe....................................................................................................... 37

6-10. Distributor ......................................................................................................... 37

– 2 –

7. CONTROL BLOCK DIAGRAM................................................................. 38

7-1. Indoor Control Cir cuit....................................................................................... 38

7-2. Control Specifications...................................................................................... 39

7-3. Indoor Print Circuit Board................................................................................ 46

8. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS........... 47

8-1. Indoor Control Cir cuit....................................................................................... 47

9. TROUBLESHOOTING.............................................................................. 49

9-1. Summary of Troubleshooting........................................................................... 49

9-2. Check Code List................................................................................................ 51

9-3. Error Mode Detected by LED on Outdoor P.C. Board .................................... 54

9-4. Troubleshooting Pr ocedure for Each Check Code......................................... 55

10. REPLACEMENT OF SERVICE INDOOR P.C. BOARD ............................ 71

11. SETUP AT LOCAL SITE AND OTHERS.................................................. 75

11-1. Indoor Unit......................................................................................................... 75

11-2. Setup at Local Site / Others ............................................................................. 82

11-3. How to Set up Central Control Address Number ........................................... 86

12. ADDRESS SETUP.................................................................................... 87

12-1. Address Setup Procedure................................................................................ 87

12-2. Address Setup & Group Control...................................................................... 88

12-3. Address Setup (Manual Setting from Remote Controller)............................. 91

12-4. Confirmation of Indoor Unit No. Position ....................................................... 92

13. DETACHMENTS ....................................................................................... 93

13-1. Indoor Unit......................................................................................................... 93

14. EXPLODED VIEWS AND PARTS LIST.................................................. 101

14-1. Ceiling Panel ................................................................................................... 101

14-2. Compact 4-way Air Discharge Cassette Type............................................... 102

– 3 –

1. SPECIFICATIONS

1-1. Indoor Unit

1-1-1. 4-Way Air Discharge Cassette Type

<Single type>

Model

Cooling capacity (kW)
Heating capacity (kW)
Pow er supply

Electrical
characteristics

Appearance

Outer
dimension

Total weight

Heat exchanger

Fan unit Standard air flow H/M/L (m³/min.)

Air filter
Controller (Sold separately)

Connecting pipe Liquid side (mm)

Sound pressure level H/M/L (dB•A)
Sound power level H/M/L (dB•A)

Indoor unit RA V­Outdoor unit RA V-

Running current (A)
Power consumption (kW)

Cooling

Heating

Main unit
Ceiling panel

(Sold separately)

Main unit Width (mm)

Ceiling panel
(Sold separately)

Main unit (kg)
Ceiling panel (Sold separately) (kg)

Fan

Motor (W)

Power factor (%)
EER
Energy efficiency class ∗
Energy rating ∗∗
Running current (A)
Power consumption (kW)
Power factor (%)
COP
Energy efficiency class ∗
Energy rating ∗∗

Model
Panel color
Height (mm)

Depth (mm)
Height (mm)
Width (mm)
Depth (mm)

Gas side (mm)

Drain port (mm)

SM402MUT-E SM452MUT-E SM562MUT-E

SP404A T(Z, ZG)-E SP454AT(Z, ZG)-E SP562AT(Z, ZG)-E

3.6 4.0 5.0

4.0 4.5 5.6
1 phase 230V (220 – 240V) 50Hz

5.05 – 4.63 5.82 – 5.33 6.6 – 7.15

1.00 1.19 1.53
90 93 97

3.60 3.36 3.27

AAA

5.0 4.5 4.5

4.79 – 4.39 5.67 – 5.20 6.62 – 7.21

0.97 1.16 1.54
92 93 97

4.12 3.88 3.64

AAA

5.5 5.0 4.5
Zinc hot dipping steel plate

RBC-UM11PG (W)-E

Moon-white (Muncel 2.5GY 9.0/0.5)

268
575
575

27
700
700

17

3

Finned tube

Turbo fan

11.0 / 9.2 / 7.8 13.3 / 11.2 / 9.1
60

Long life filter

Remote controller

12.7

6.4

VP25
40 / 36 / 31 43 / 39 / 34
55 / 51 / 46 58 / 54 / 49

– 4 –

∗ : IEC standard, ∗∗ : AS standard

<Single type>

Model

Cooling capacity (kW)
Heating capacity (kW)
Pow er supply

Electrical
characteristics

Indoor unit RA V­Outdoor unit RA V-

Running current (A)
Power consumption (kW)
Power factor (%)

Cooling

EER
Energy efficiency class ∗
Energy rating ∗∗
Running current (A)
Power consumption (kW)
Power factor (%)

Heating

COP
Energy efficiency class ∗
Energy rating ∗∗

SM562MUT-E SM562MUT-E

SM562AT-E SM563AT-E

5.0 5.0

5.6 5.6
1 phase 230V (220 – 240V) 50Hz

7.02 – 7.75 7.02 – 7.75

1.61 1.61
95 95

3.11 3.11

BB

4.0 4.0

7.04 – 7.72 7.04 – 7.72

1.61 1.61
95 95

3.48 3.48

BB

4.5 4.5

Main unit

Appearance

Outer
dimension

Total weight

Heat exchanger

Fan unit Standard air flow H/M/L (m³/min.)

Air filter
Controller (Sold separately)

Ceiling panel
(Sold separately)

Main unit Width (mm)

Ceiling panel
(Sold separately)

Main unit (kg)
Ceiling panel (Sold separately) (kg)

Fan

Motor (W)

Model

Panel color

Height (mm)

Depth (mm)
Height (mm)
Width (mm)
Depth (mm)

Zinc hot dipping steel plate

RBC-UM11PG (W)-E

Moon-white

(Muncel 2.5GY 9.0/0.5)

268
575
575

27
700
700

17

3

Finned tube

Turbo fan

13.3 / 11.2 / 9.1
60

Long life filter

Remote controller
Sound pressure level H/M/L (dB•A)
Sound power level H/M/L (dB•A)

Gas side (mm)

Connecting pipe Liquid side (mm)

Drain port (mm)

– 5 –

12.7

6.4

VP25
43 / 39 / 34
58 / 54 / 49

∗ : IEC standard, ∗∗ : AS standard

<Twin type>

Indoor unit 1 RA V- SM562MUT -E SM562MUT-E

Model Indoor unit 2 RA V- SM562MUT -E SM562MUT-E

Outdoor unit RAV- SP1102AT(Z, ZG)-E SP1104AT(Z, ZG)-E

Cooling capacity (kW) 10.0 10.0
Heating capacity (kW) 11.2 11.2

Indoor unit

Po w er supply 1 phase 230V (220 – 240V) 50Hz

Running current (A) 10.31 – 11.24 12.51 – 11.47
Pow er consumption (kW) 2.4 2.67

Cooling

Electrical
characteristics

Heating

Fan Turbo fan

Fan unit Standard air flow H/M/L (m³/min.) 13.3 / 11.2 / 9.1

Motor (W) 60
Sound pressure level H/M/L (dB•A) 43 / 39 / 34
Sound power lev el H/M/L (dB•A) 58 / 54 / 49

Po w er supply 1 phase 230V (220 – 240V) 50Hz

Pow er factor (%) 97 97
EER 4.17 3.75
Energy efficiency class ∗ AA
Energy rating ∗∗ ——
Running current (A) 10.95 – 11.95 12.51 – 11.47
Pow er consumption (kW) 2.55 2.67
Pow er factor (%) 97 97
COP 4.39 4.19
Energy efficiency class ∗ AA
Energy rating ∗∗ ——

Outdoor unit

Standard length (m) 7.5

Min. length (m) 5 3
Outer
dimension

Fan unit Standard air flow volume (m³/min.) 125 101

Connecting
pipe

Sound pressure level Cooling/Heating (dB•A) 49 / 51 49 / 50
Sound power lev el Cooling/Heating (dB•A) 66 / 68 66 / 67

Max. total length (m) 50

Height

difference

Fan Propeller fan

Motor (W) 63 + 63 100 + 100

Gas side

Liquid side

Outdoor lower (m) 30
Outdoor higher (m) 30

Main (mm) 15.9
Sub (mm) 12.7
Main (mm) 9.5
Sub (mm) 6.4

∗ : EC standard, ∗∗ : AS standard

– 6 –

<Twin type>

Indoor unit 1 RA V- SM562MUT -E SM562MUT-E
Model Indoor unit 2 RA V- SM562MUT -E SM562MUT-E

Outdoor unit RA V- SM1102AT-E SM1103AT-E

Cooling capacity (kW) 10.0 10.0
Heating capacity (kW) 11.2 11.2

Indoor unit

Po w er supply 1 phase 230V (220 – 240V) 50Hz

Running current (A) 14.96 – 16.32 14.96 – 16.32
Pow er consumption (kW) 3.52 3.52

Cooling

Electrical
characteristics

Heating

Fan Turbo fan
Fan unit Standard air flow H/M/L (m³/min.) 13.3 / 11.2 / 9.1

Motor (W) 60
Sound pressure level H/M/L (dB•A) 43 / 39 / 34
Sound power lev el H/M/L (dB•A) 58 / 54 / 49

Po w er supply 1 phase 230V (220 – 240V) 50Hz

Pow er factor (%) 98 98
EER 2.84 2.84
Energy efficiency class ∗ CC
Energy rating ∗∗ ——
Running current (A) 13.35 – 14.56 13.35 – 14.56
Pow er consumption (kW) 3.14 3.14
Pow er factor (%) 98 98
COP 3.57 3.57
Energy efficiency class ∗ BB
Energy rating ∗∗ ——

Outdoor unit

Standard length (m) 7.5

Min. length (m) 5.0
Outer
dimension

Fan unit Standard air flow volume (m³/min.) 75

Connecting
pipe

Sound pressure level Cooling/Heating (dB•A) 53 / 54
Sound power lev el Cooling/Heating (dB•A) 70 / 71

Max. total length (m) 50

Height

difference

Fan Propeller fan

Motor (W) 100 63

Gas side

Liquid side

Outdoor lower (m) 30
Outdoor higher (m) 30

Main (mm) 15.9
Sub (mm) 12.7
Main (mm) 9.5
Sub (mm) 6.4

∗ : IEC standard, ∗∗ : AS standard

– 7 –

<Triple type>

Indoor unit 1 RAV-SM562MUT-E

Model

Cooling capacity (kW) 14.0
Heating capacity (kW) 16.0

Power supply 1 phase 230V (220 – 240V) 50Hz

Electrical
characteristics

Indoor unit 2 RAV-SM562MUT-E
Indoor unit 3 RAV-SM562MUT-E
Outdoor unit RAV-SM1603AT-E

Indoor unit

Running current (A) 23.88 – 21.89
Power consumption (kW) 4.99

Cooling Power factor (%) 95

EER 2.81
Energy efficiency class ∗ C
Running current (A) 22.44 – 20.57
Power consumption (kW) 4.69

Heating Power factor (%) 95

COP 3.41
Energy efficiency class ∗ B

Fan Turbo fan

Fan unit Standard air flow H/M/L (m³/min.) 13.3 / 11.2 / 9.1

Motor (W) 60
Sound pressure level H/M/L (dB•A) 43 / 39 / 34
Sound power level H/M/L (dB•A) 58 / 54 / 49

Outdoor unit

Power supply 1 phase 230V (220 – 240V) 50Hz

Standard length (m) 7.5

Min. length (m) 5.0
Outer dimension Max. total length (m) 50

Height

difference

Fan Propeller fan
Fan unit Standard air flow volume (m³/min.) 103

Motor (W) 100 + 100

Gas side
Connecting pipe

Liquid side

Outdoor lower (m) 30
Outdoor higher (m) 30

Main (mm) 15.9
Sub (mm) 12.7
Main (mm) 9.5

Sub (mm) 6.4
Sound pressure level Cooling/Heating (dB•A) 51 / 53
Sound power level Cooling/Heating (dB•A) 68 / 70

– 8 –

∗ : IEC standard

1-2. Outdoor Unit

<Super Digital Inverter>

Model name Outdoor unit RAV-SP

Power supply

Type

Compressor Motor (kW)

Pole

Refrigerant charged (kg)

Refrigerant control

Standard length (m)

Max. total length (m)

Inter Additional refrigerant charge
connecting pipe under long piping connector

Height
difference

Height (mm)

Outer dimension Width (mm)

Outdoor lower (m)

Outdoor higher (m)

562A T(Z)(ZG)-E 802AT(Z)(ZG)-E 1104AT(Z)(ZG)-E 1404AT(Z)(ZG)-E

1 phase 230V (220 – 240V) 50Hz

(Power exclusive to outdoor is required.)

Hermetic compressor

2 2 3.75 3.75

4444

1.5 2.1 3.1 3.1

Pulse motor valve

7.5 7.5 7.5 7.5

50 50 75 75

20g/m 40g/m 40g/m 40g/m

(21m to 50m) (31m to 50m) (31m to 75m) (31m to 75m)

30 30 30 30

30 30 30 30

795 795 1340 1340

900 900 900 900

Depth (mm)

Appearance

Total weight (kg)

Heat exchanger

Fan

Fan unit Standard air flow (m³/h)

Motor (W)

Gas side (mm)

Connecting pipe

Liquid side (mm)

Sound pressure level Cooling/Heating (dB•A)

Sound power level Cooling/Heating (dB•A)

Outside air temperature, Cooling (°C)

Outside air temperature, Heating (°C)

320 320 320 320

Silky shade (Muncel 1Y8.5/0.5)

55 62 93 93

Finned tube

Propeller fan

57 57 101 103

63 63 100 + 100 100 + 100

12.7 15.9 15.9 15.9

6.4 9.5 9.5 9.5

46 / 47 47 / 49 49 / 50 51 / 52

63 / 64 64 / 66 66 / 67 68 / 69

43 to –15°C

15 to –15°C 15 to –20°C

– 9 –

Model name Outdoor unit

RAV-SP404AT(Z)(ZG)-E RAV-SP454AT(Z)(ZG)-E

Power supply

Type

Compressor Motor (kW)

Pole

Refrigerant charged (kg)

Refrigerant control

Standard length (m)

Max. total length (m)

Inter Additional refrigerant charge
connecting pipe under long piping connector

Height
difference

Height (mm)

Outer dimension Width (mm)

Depth (mm)

Outdoor lower (m)

Outdoor higher (m)

1 phase 230V (220 – 240V) 50Hz

(Power exclusive to outdoor is required.)

Hermetic compressor

1.1 1.1

44

1.0 1.0

Pulse motor valve

7.5 7.5

30 30

20g/m (21m to 30m)

30 30

30 30

550 550

780 780

290 290

Appearance

Total weight (kg)

Heat exchanger

Fan

Fan unit Standard air flow (m³/h)

Motor (W)

Gas side (mm)

Connecting pipe

Liquid side (mm)

Sound pressure level Cooling/Heating (dB•A)

Sound power level Cooling/Heating (dB•A)

Outside air temperature, Cooling (°C)

Outside air temperature, Heating (°C)

Silky shade (Muncel 1Y8.5/0.5)

40 40

Finned tube

Propeller fan

40 40

43 43

12.7 12.7

6.4 6.4

45 / 47 45 / 47

62 / 64 62 / 64

43 to –15°C

15 to –15°C

– 10 –

1-3. Operation Characteristic Curve

<Digital Inverter>

RAV-SM562MUT-E / RAV -SM562AT-E

<Cooling> <Heating>

10

8

6

4

Current (A)

2

0

0

• Conditions
Indoor : DB27˚C/WB19˚C
Outdoor : DB35˚C
Air flow : High
Pipe length : 7.5m
230V

20 40 60 70 80 100

Compressor speed (rps)

10

8

6

4

Current (A)

• Conditions
Indoor : DB20˚C

2

Outdoor : DB7˚C/WB6˚C
Air flow : High
Pipe length : 7.5m
230V

0

0 2040608090100

Compressor speed (rps)

<Super Digital Inverter>

RAV-SM562MUT-E / RAV -SP562AT-E

<Cooling> <Heating>

10

12

10

8

8

6

6

Current (A)

Current (A)

4

• Conditions
Indoor : DB27˚C/WB19˚C

2

Outdoor : DB35˚C
Air flow : High
Pipe length : 7.5m
230V

0

0 20406050 70 80 100

4

2

0

0 204060 908070 100

• Conditions
Indoor : DB20˚C
Outdoor : DB7˚C/WB6˚C
Air flow : High
Pipe length : 7.5m
230V

Compressor speed (rps) Compressor speed (rps)

– 11 –

<Super Digital Inverter>

SP40

SP40

SP45

SP45

RAV-SP404AT-E, RAV-SP404ATZ-E, RAV-SP404ATZG-E
RAV-SP454AT-E, RAV-SP454ATZ-E, RAV-SP454ATZG-E

<Cooling> <Heating>

14

12

SP45

10

8

6

Current (A)

4

2

0

0 20 405060708090100

SP45

• Conditions
Indoor : DB27˚C/WB19˚C
Outdoor : DB35˚C
Air flow : High
Pipe length : 7.5m
230V

SP40

SP40

Compressor speed (rps)

16

14

SP45

12

10

8

SP40

SP40

SP45

Current (A)

6

4

2

0

0 2040608090100120

• Conditions
Indoor : DB20˚C
Outdoor : DB7˚C/WB6˚C
Air flow : High
Pipe length : 7.5m
230V

Compressor speed (rps)

– 12 –

1-4. Capacity Variation Ratio According to Temperature

RAV-SP404AT-E, RAV-SP404ATZ-E, RAV-SP404ATZG-E
RAV-SP454AT-E, RAV-SP454ATZ-E, RAV-SP454ATZG-E

<Cooling> <Heating>

105
100

95
90
85
80
75
70

Capacity ratio (%)

65
60
55
50

32 33 34 35 36 37 38 39

Outdoor temp. (˚C)

• Conditions
Indoor : DB27˚C/WB19˚C
Indoor air flow : High
Pipe length : 7.5m

40

41 42 43

120
110
100

90
80
70
60
50

Capacity ratio (%)

40
30
20
10

0

-14-16-18-20 -12-10 -8 -6 -4 -2 0 2 4 6 8 10

• Conditions
Indoor : DB20˚C
Indoor air flow : High
Pipe length : 7.5m

Outdoor temp. (˚C)

RAV-SP562A T-E, RAV-SM563AT-E

<Cooling> <Heating>

105
100

95
90
85
80
75
70

Capacity ratio (%)

65
60
55
50

32 33 34 35 36 37 38 39

• Conditions
Indoor : DB27˚C/WB19˚C
Indoor air flow : High
Pipe length : 7.5m

40

41 42 43

120
110
100

90
80
70
60
50

Capacity ratio (%)

40
30
20
10

0

Outdoor temp. (˚C)

• Conditions
Indoor : DB20˚C
Indoor air flow : High
Pipe length : 7.5m

-14-16-18-20 -12-10 -8 -6 -4 -2 0 2 4 6 8 10

Outdoor temp. (˚C)

– 13 –

2-1. Indoor Unit

2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

200

1000 or more

15 or more15 or more

1000 or more

Obustacle

1000 or more

Space required for

installation and servicing

149

175

207

64

Bottom face
of ceiling

145.5

93

Knockout for flesh
air intake Ø100

70

105

595 to 660 Ceiling open dimension

142 64

29

700 Panel external dimension

595 to 660 Ceiling open dimension

525 Hanging bolt pitch

368.5

Check port

( 450)

Check port

( 450)

200

Check port

( 450)

Drain-up standing-up size

Indoor unit

627.5

or less

Stand-up

Bottom face
of ceiling

Stand-up

850 or less

Note)

595 to 660 Ceiling open dimension

As ABS is used for the drain discharge port of the main unit,
the vinyl chlor paste cannot be used.

Use the flexible hose (Band fix) included in the package.

• Wired remote controller
(RBC-AMT32E)

Drain discharge port

Hanging bolt
M10 or W3/8
local arrange

120

268 27

220.5

145.5
134

63

120

16

Bottom face
of ceiling

Ceiling panel

200

235

105235

Ø162

For branch duct knockout
square hole Ø150

Bottom face of ceiling

575 Unit external dimension

Electric parts box

320.5

575 Unit external dimension

– 14 –

Ø162

256

177

148

510 Hanging bolt pitch

700 Panel external dimension

595 to 660 Ceiling open dimension

Refrigerant pipe
(Liquid) Ø6.4

For branch ductt
knockout square
hole Ø150

Refrigerant pipe
(Gas) Ø12.7

214 105

97.5 42

139.5

190.5

120

142

21

158

Wiring
connection
port

55

9310570

RBC-TWP30E2, RBC-TWP50E2 (Simultaneous Twin)

Inner diameter Ø C

B

Inner

diameter Ø D

Model (RBC-)

TWP30E2

TWP50E2

Liquid side
Gas side
Liquid side
Gas side

Inner

diameter Ø D

A

ABCD

36 14 Ø9.5 Ø6.4
43 23 Ø15.9 Ø12.7
34 14 Ø9.5 Ø9.5
44 21 Ø15.9 Ø15.9

– 15 –

RBC-TRP100E (Simultaneous Triple)

<Gas side>

Header assembly

300

Inner diameter Ø25.4Inner diameter Ø12.7

<Liquid side>

Branch pipe assembly

35

80 80100

Inner diameter
Ø15.9

100

80 80100

Inner diameter
Ø9.52

Insulator

Gas side socket Liquid side socket

Ø15.9

28

10

Ø12.7

Ø15.9

(External

diameter)

46

12

6

24

Ø25.4

(External

diameter)

Ø6.4

Ø9.5

(External

diameter)

100

Ø9.5

9

26

Ø12.7

(External

diameter)

3 pcs. 3 pcs.1 pc. 1 pc.

– 16 –

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM

3-1. Indoor Unit

• Single type
(Combination of one indoor unit and
one outdoor unit)

Distributor
(Strainer
incorporated)

TC sensor

Refrigerant pipe
at liquid side
Outer diameter Ø6.4

Heating time
Cooling time

• Twin type (Combination of two indoor units and one outdoor unit)

RAV-SM562MUT-E RAV-SM562MUT-E

Distributor
(Strainer
incorporated)

TC sensor

Indoor A unit

TCJ sensor

Air heat

exchanger

Distributor
(Strainer
incorporated)

TC sensor

Indoor unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe
at gas side
Outer diameter Ø12.7

To outdoor unitTo outdoor unit

Indoor B unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe
at liquid side
Outer diameter Ø6.4

Branch pipe

Refrigerant pipeat liquid side
Outer diameter Ø9.5

To outdoor unit

Refrigerant pipe
at gas side
Outer diameter Ø12.7

Refrigerant pipe
at liquid side
Outer diameter Ø6.4

Refrigerant pipeat gas side

Outer diameter Ø15.9
Heating time
Cooling time

• Triple type (Combination of three indoor units and one outdoor unit)

RAV-SM562MUT-E

Distributor
(Strainer
incorporated)

TC sensor

Refrigerant pipe
at liquid side
Outer diameter
Ø6.4

Indoor A unit

TCJ sensor

exchanger

Air heat

Refrigerant pipe
at gas side
Outer diameter
Ø12.7

RAV-SM562MUT-E

Distributor
(Strainer
incorporated)

TC sensor

Refrigerant pipe
at liquid side
Outer diameter
Ø6.4

Indoor B unit

TCJ sensor

exchanger

Air heat

Refrigerant pipe
at gas side
Outer diameter
Ø12.7

RAV-SM562MUT-E

Distributor
(Strainer
incorporated)

TC sensor

Refrigerant pipe
at liquid side
Outer diameter
Ø6.4

Refrigerant pipe
at gas side
Outer diameter Ø12.7

Branch pipe

To outdoor unit

Indoor C unit

TCJ sensor

Air heat

exchanger

Refrigerant pipe
at gas side
Outer diameter
Ø12.7

Refrigerant
pipeat liquid side
Outer diameter Ø9.5

To outdoor unit

Distributor

Heating time
Cooling time

– 17 –

Distributor

Refrigerant
pipeat gas side
Outer diameter Ø15.9

To outdoor unit

3-2. Outdoor Unit

RAV-SM562MUT-E / RAV -SP562AT-E

Accumulator
(1500cc)

TS sensor

TD sensor

Muffler

Ø25 × L160

Rotary compressor

(DA220A2F-20L)

Packed valve
Outer dia. Ø12.7

Strainer

4-way valve

(STF-0213Z)

Ø25 × L210

TO sensor

Heat exchangerØ8
1 row 30 stages
FP1.3 flat fin

Outdoor unit

TE

sensor

Packed valve
Outer dia. Ø6.4

Modulating
(PMV)
(SKV-18D26)

Capillary
Ø3×Ø2×
L530

PsPd

Strainer

R410A 1.5 kg

Cooling
Heating

Standard

Cooling Overload

Low load
Standard

Heating Overload

Low load

Pressure

(MPa)

Pd Ps

2.71 1.03

3.48 1.16

1.92 0.74

2.22 0.72

3.47 1.16

1.79 0.25

Pipe surface temperature (°C)

Discharge Suction

(TD) (TS) (TC) (TE)

75 15 10 38
81 20 16 51
34 5 2 11
62 6 38 2
81 20 55 15
71 –16 30 –18

Indoor heat Outdoor heat

exchanger exchanger

Compressor

revolutions per

second (rps)

∗∗

∗

∗∗

43
44
24
41
41
70

Indoor

fan

HIGH
HIGH

LOW

HIGH

LOW

HIGH

Indoor/Outdoor

temp. conditions

(DB/WB) (°C)

Indoor Outdoor

27/19 35/–
32/24 43/–

18/15.5 –5/–

20/– 7/6
30/– 24/18
15/–

–20/(70%)

∗ This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp

meter becomes 2 times of No. of compressor revolutions (rps).

– 18 –

RAV-SM562MUT-E / RAV -SM562AT-E

TS sensor

TD sensor

Rotary compressor

(DA150A1F-20F)

2-step muffler

Ø19 .05 × 200L

4-way valve

(STF-0108Z)

Muffler

Ø19 × L160

Packed valve
Outer dia. Ø12.7

TO sensor

TE

sensor

Heat exchanger Ø8 ripple,
2 rows, 14 steps
FP1.3 flat fin

Outdoor unit

Packed valve
Outer dia. Ø6.4

PMV
(Pulse Motor Valve)
(CAM-B30YGTF-1)

Strainer

Distributor

R410A 1.0 kg

Cooling
Heating

Standard

Cooling Overload

Low load
Standard

Heating Overload

Low load

Pressure

(MPa) (kg/cm²G)

Pd Ps Pd Ps

3.50 0.97 35.7 9.9

3.90 1.08 39.8 11.0

1.90 0.70 19.4 7.1

2.31 0.61 13.6 6.2

2.86 0.89 29.2 9.1

1.86 0.25 19.0 2.6

Discharge Suction

Pipe surface temperature (°C)

Indoor heat Outdoor heat

exchanger exchanger

(TD) (TS) (TC) (TE)

85 14 12 48
93 26 17 54
48 7 5 30
87 5 40 1
86 17 47 11
69 –14 31 –15

Compressor

revolutions per

second (rps)

∗∗

∗

∗∗

70
70
50
97
95
98

Indoor

fan

HIGH
HIGH

LOW

HIGH

LOW

HIGH

Indoor/Outdoor

temp. conditions

(DB/WB) (°C)

Indoor Outdoor

27/19 35/–
32/24 43/–

18/15.5 –5/–

20/– 7/6
28/– 24/18
15/–

–10/(70%)

∗ This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp

meter becomes 2 times of No. of compressor revolutions (rps).

– 19 –

RAV-SM402MUT-E / RAV -SP404AT-E
RAV-SM454MUT-E / RAV -SP454AT-E

TS sensor

TD sensor

(STF-0108Z)

Rotary compressor

(DA150A1F-20F)

2-step muffler

Ø19.05 × 200L

4-way valve

Muffler

Ø19 × L160

Packed valve
Outer dia. Ø12.7

TO sensor

TE

sensor

Heat exchanger Ø8 ripple,
2 rows, 14 steps
FP1.3 flat fin

Packed valve
Outer dia. Ø6.4

PMV
(Pulse Motor Valve)
(CAM-B30YGTF-2)

Strainer

Distributor

R410A 1.0 kg

Cooling
Heating

RAV-SP404AT-E

Standard

Cooling Overload

Low load
Standard

Heating Overload

Low load

Pressure

(MPa) (kg/cm²g)

Pd Ps Pd Ps

2.68 0.94 27.3 9.6

3.23 1.16 32.9 11.8

1.34 0.70 13.7 7.1

2.38 0.70 24.3 7.1

3.39 1.03 34.6 10.5

1.95 0.26 19.9 2.7

Discharge Suction

Pipe surface temperature (°C)

Indoor heat Outdoor heat

exchanger exchanger

(TD) (TS) (TC) (TE)

61 12 11 43
77 14 15 50
36 4 2 8
65 7 39 4
83 20 54 16
90 –17 32 –19

Compressor

drive revolution

frequency

(rps)

47
50
44
49
49
90

Indoor

fan

HIGH
HIGH

LOW

HIGH

LOW

HIGH

Indoor/Outdoor

temp. conditions

(DB/WB) (°C)

Indoor Outdoor

27/19 35/–
32/24 43/–

18/15.5 –5/–

20/– 7/6
30/– 24/18
15/––15/–

∗ This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp

meter becomes 2 times of No. of compressor revolutions (rps).

RAV-SP454AT-E

Standard

Cooling Overload

Low load
Standard

Heating Overload

Low load

Pressure

(MPa) (kg/cm²g)

Pd Ps Pd Ps

2.81 0.89 28.7 9.1

3.24 1.16 33.0 11.8

1.34 0.70 13.7 7.1

2.53 0.68 25.8 6.9

3.39 1.03 34.6 10.5

2.00 0.25 20.4 2.6

Discharge Suction

Pipe surface temperature (°C)

Indoor heat Outdoor heat

exchanger exchanger

(TD) (TS) (TC) (TE)

68 11 10 41
78 14 15 51
36 4 2 8
70 7 41 4
83 20 54 16
92 –17 33 –19

Compressor

drive revolution

frequency

(rps)

53
53
44
56
49
98

Indoor

fan

HIGH
HIGH

LOW

HIGH

LOW

HIGH

Indoor/Outdoor

temp. conditions

(DB/WB) (°C)

Indoor Outdoor

27/19 35/–
32/24 43/–

18/15.5 –5/–

20/– 7/6
30/– 24/18
15/––15/–

∗ This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp

meter becomes 2 times of No. of compressor revolutions (rps).

– 20 –

4. WIRING DIAGRAM

4-1. Indoor Unit

4-1-1. Compact 4-way Cassette Type

1 2
1 2

CN104

(YEL)

Control P.C. Board for

RY
302

1 233 1 2 3
1 2

LM1

LM2

5 5
4 4
3 3
2 2
1 1

5 5
4 4
3 3
2 2
1 1

5 5
4 4
3 3
2 2
1 1

FM

FS

CN34

(RED)

3 3

2 2

1 1

CN33
(WHI)

5 5
4 4
3 3
2 2
1 1

CN333

(WHI)

5 5

4 4

3 3

2 2

1 1

CN334

(WHI)

1 1

2 2
3 3

4 4
5 5

CN68
(BLU)

TA

TCJ

1 2
1 2

CN102

(RED)

1 2
1 2

CN101

(BLK)

MCC-1402

Indoor Unit

Fuse
F302
T3.15A
250V~

Motor

drive

circuit

RY
303

CN304
(GRY)

Fuse
F301
250V~
T6.3A

CN67
(BLK)

TC

1 2 3

CN80

(GRN)

Power

supply

circuit

+–

~~

1 233
1 2

WHI BLK

RED

DC20V
DC15V
DC12V
DC7V

5

445

(EXCT)

1 2

CN73

(RED)

P301

BLK

1 2

CN70
(WHI)

1 2

CN66
(WHI)

Connection interface (option)

CN50
(WHI)

(FAN DRIVE)

5

5

4

4

3

3

2

2

1

1

6
5

CN60

4

(WHI)

3
2
1

CN32

2

(WHI)

1

6
5
4

CN61
(YEL)

3
2
1

3

CN309

2

(YEL)

1

3

3

2 2

1 1

CN41
(BLU)

BLK

WHI

CN51
(RED)

5

5

4

4

P.C.

3

3

Board

2

2

1

1

1 2
1 2

Terminal for

central remote

controller

B
A

CN40
(BLU)

U4U3

BLK

WHI

2 2
1 1

CN001
(WHI)

Adapter for

Wireless Remote

Controller

BLK

B
A

WHI

Wired Renote

Controller

FM

TA

TC

TCJ

LM1,LM2

DP

FS

RY302

NOTE

: Fan motor
: Indoor temp. sensor
: Temp. sensor
: Temp. sensor
: Louver motor
: Drain pump motor
: Float switch
: Drain control relay

DP

Single phase
220 to 240V
50Hz

– 21 –

321

Indoor unit
earth screw

321

Outdoor unit
earth screw

Serial

NL

signal

Color

Identification

BLACK

:

BLK

BLUE

:

BLU

RED

:

RED

GRAY

:

GRY

PINK

:

PNK

GREEN

:

GRN

WHITE

:

WHI

BROWN

:

BRN

ORANGE

:

ORN

YELLOW

:

YEL

• Single type • Twin type

Power supply 220-240V

Single phase 50Hz

L
N

Wired remote controller

• Triple type

Outdoor unit

123

123

Indoor

B

A

AB

unit

Power supply 220-240V

Single phase 50Hz

L

N

Wired remote controller

Outdoor unit

123

123

Indoor unit

No.1 (Master)

B

A

AB

Earth
screw

123

Indoor unit
No.2 (Sub)

AB

Power supply 220-240V

Single phase 50Hz

L
N

Earth

screw

Wired remote controller

Outdoor unit

123

123

Indoor unit

No.1 (Header)

B

A

Earth

AB

screw

Earth
screw

Earth
screw

123

Indoor unit

No.2 (Follower)

AB

Earth

screw

Earth

screw

Earth

screw

123

Indoor unit

No.3 (Follower)

AB

Notes)

1. : indicates a terminal block

2. Broken line and chain line indicate wiring at local site.

3. For the inner wiring diagram of the outdoor unit and the indoor unit, refer to the wiring diagram of each model.

4. There is no polarity. It is no problem that the remote controller is connected to the indoor unit ter minal block A
and B reversely.

5. When using a wireless remote controller, connection of the remote controller to A and B terminal blocks are
unnecessary. (Wire connection between indoor unit No.1 and No.2 is necessary.)

– 22 –

5-1. Indoor Unit

5. SPECIFICATIONS OF ELECTRICAL PARTS

No.

1

Fan motor (for indoor)

2

Thermo. sensor (TA-sensor)

3

Heat exchanger sensor (TCJ-sensor)

4

Heat exchanger sensor (TC-sensor)

5

Float switch

6

Drain pump motor

Parts name

Type

SWF-230-60-1R

155 mm

Ø6 mm, 1200 mm

Ø6 mm, 1200 mm

FS-0218-106

ADP-1406

Specifications

Output (Rated) 60 W, 220–240 V

10 kΩ at 25°C

10 kΩ at 25°C

10 kΩ at 25°C

– 23 –

6. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.

The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water , dust, and existing refrigerant or refrigerat­ing oil are not entered in the refrigerant cycle of the
air conditioner using the new refrigerant during
installation work or servicing time.

The next section describes the precautions for air
conditioner using the new refrigerant. Conforming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.

6-1. Safety During Installation/Servicing

As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materi­als exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.

1) Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.

If other refrigerant than R410A is mixed, pressure
in the refrigeration cycle becomes abnormally
high, and it may cause personal injury, etc. by a
rupture.

2) Confirm the used refrigerant name, and use tools
and materials exclusive for the refrigerant R410A.

The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air condi­tioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.

3) If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.

4) When installing or removing an air conditioner, do
not allow air or moisture to remain in the refrig­eration cycle. Otherwise, pressure in the refrig­eration cycle may become abnormally high so
that a rupture or personal injury may be caused.

5) After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.

If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.

6) When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentr ation
does not exceed the marginal le vel.

If the refrigerant gas leakage occurs and its
concentration exceeds the marginal le vel, an
oxygen starvation accident ma y result.

7) Be sure to carry out installation or removal
according to the installation manual.

Improper installation may cause refrigeration
trouble, water leakage , electric shock, fire, etc.

8) Unauthorized modifications to the air conditioner
may be dangerous. If a breakdown occurs please
call a qualified air conditioner technician or
electrician.

Improper repair’s may result in water leakage,
electric shock and fire, etc.

6-2. Refrigerant Piping Installation

6-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant m ust be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants .

1) Copper Pipes
It is necessary to use seamless copper pipes

which are made of either copper or copper alloy
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 R22, it is necessary
to choose adequate materials.

Thicknesses of copper pipes used with R410A
are as shown in Table 6-2-1. Never use copper
pipes thinner than 0.8 mm even when it is
available on the market.

– 24 –

Table 6-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter

1/4
3/8
1/2
5/8

2) Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 6-2-3 to 6-2-6 below .

b) Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thic k pipings whose
diameter is larger than 20 mm.

Thicknesses of sock et joints are as shown in Table 6-2-2.

Outer diameter (mm)

6.35

9.52

12.70

15.88

R410A R22

0.80 0.80

0.80 0.80

0.80 0.80

1.00 1.00

Table 6-2-2 Minimum thicknesses of socket joints

Nominal diameter

1/4
3/8
1/2
5/8

Reference outer diameter of

copper pipe jointed (mm)

6.35

9.52

12.70

15.88

Minimum joint thickness

(mm)

0.50

0.60

0.70

0.80

6-2-2. Processing of Piping Materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil other than lubricating oils used in the installed air conditioner is used,
and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils
whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any
other cover.

1) Flare Processing Procedures and Precautions
a) Cutting the Pipe

By means of a pipe cutter, slowly cut the pipe so that it is not deformed.

b) Removing Burrs and Chips

If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.

– 25 –

c) Insertion of Flare Nut
d) Flare Processing

Make certain that a clamp bar and copper
pipe have been cleaned.

By means of the clamp bar, perform the flare
processing correctly.

Use either a flare tool for R410A or conven­tional flare tool.

Table 6-2-3 Dimensions related to flare processing for R410A

Nominal

diameter

Outer

diameter

(mm)

Thickness

(mm)

Flare processing dimensions differ according
to the type of flare tool. When using a conven­tional flare tool, be sure to secure “dimension
A” b y using a gauge for size adjustment.

Fig. 6-2-1 Flare pr ocessing dimensions

Flare tool for

R410A clutch type

ØD

A

A (mm)

Conventional flare tool

Clutch type Wing nut type

1/4
3/8
1/2
5/8

Nominal

diameter

1/4
3/8
1/2
5/8

6.35

9.52

12.70

15.88

0.8

0.8

0.8

1.0

0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5

Table 6-2-4 Dimensions related to flare processing for R22

Outer

diameter

(mm)

Thickness

(mm)

Flare tool for

R22 clutch type

6.35

9.52

12.70

15.88

0.8

0.8

0.8

1.0

0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

1.0 to 1.5 2.0 to 2.5

A (mm)

Conventional flare tool

Clutch type Wing nut type

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

0.5 to 1.0 1.5 to 2.0

Nominal

diameter

1/4
3/8
1/2
5/8

Table 6-2-5 Flare and flare nut dimensions for R410A

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

0.8

0.8

1.0

Dimension (mm)

ABCD

9.1 9.2 6.5 13

13.2 13.5 9.7 20

16.6 16.0 12.9 23

19.7 19.0 16.0 25

– 26 –

Flare nut

width (mm)

17
22
26
29

Table 6-2-6 Flare and flare nut dimensions for R22

Nominal

diameter

1/4
3/8
1/2
5/8
3/4

Outer diameter

(mm)

6.35

9.52

12.70

15.88

19.05

Thickness

45˚to 46˚

(mm)

0.8

0.8

0.8

1.0

1.0

B A

Dimension (mm)

ABCD

9.0 9.2 6.5 13

13.0 13.5 9.7 20

16.2 16.0 12.9 20

19.4 19.0 16.0 23

23.3 24.0 19.2 34

D

C

43˚to 45˚

Flare nut width

(mm)

17
22
24
27
36

Fig. 6-2-2 Relations between flare nut and flare seal surface

2) Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is

the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable. When choosing the tightening

torque, comply with values designated b y manufacturers. Table 6-2-7 shows reference values.

Note)

When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 6-2-7 Tightening torque of flare for R410A [Reference values]

Nominal

diameter

1/4

Outer diameter

(mm)

6.35

Tightening torque

N•m (kgf•cm)

14 to 18 (140 to 180)

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

16 (160), 18 (180)
3/8
1/2
5/8

9.52

12.70

15.88

33 to 42 (330 to 420)
50 to 62 (500 to 620)
63 to 77 (630 to 770)

– 27 –

42 (420)
55 (550)
65 (650)

6-3. Tools

6-3-1. Required T ools

The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to
prev ent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and
opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2) Tools exclusive for R410A, but can be also used for con ventional refrigerant (R22)

3) Tools commonly used for R410A and f or conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

No.





















Used tool

Flare tool
Copper pipe gauge for

adjusting projection
margin

Torque wrench
Gauge manifold
Charge hose
V acuum pump adapter
Electronic balance for

refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder

Usage

Pipe flaring
Flaring by conventional

flare tool

Connection of flare nut
Evacuating, refrigerant

charge, run check, etc.
V acuum evacuating

Refrigerant charge

Refrigerant charge
Gas leakage check
Refrigerant charge

air conditioner installation

Existence of
new equipment
for R410A

Yes

Yes

Yes

Yes

Yes
Yes

Yes
Yes

(Note 2)

R410A

Whether conven­tional equipment
can be used

*(Note 1)

*(Note 1)

×
×

×
×

×
×
×

Conventional air

conditioner installation

Whether new equipment
can be used with
conventional refrigerant

¡

*(Note 1)

×
×

¡

¡

×

¡

×

Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection

margin is necessary. For this adjustment, a copper pipe gauge , etc. are necessary.

Note 2) Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.

1) V acuum pump
Use vacuum pump by
attaching vacuum pump adapter.

2) Torque wrench

3) Pipe cutter

4) Reamer

5) Pipe bender

6) Level vial

7) Screwdriver (+, –)

8) Spanner or Monkey wrench

9) Hole core drill (Ø65)

10) Hexagon wrench
(Opposite side 4mm)

11) Tape measure

12) Metal saw

Also prepare the following equipments for other installation method and run check.

1) Clamp meter

2) Thermometer

3) Insulation resistance tester

4) Electroscope

– 28 –

6-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps .

Recover the refrigerant, and check no refrigerant
remains in the equipment.

Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.

When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.

Connect the charge hose of the vacuum pump
adapter.

Open fully both packed valves at liquid and gas
sides.

Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.

Never charge refrigerant exceeding the specified amount.



If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.



Do not carry out additional charging.



Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.

Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge

liquid refrigerant.

(For refrigerant charging, see the figure below.)

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.

(INDOOR unit)

Refrigerant cylinder

(With siphon pipe)

Check valve

Open/Close valve

for charging

Electronic balance for refrigerant charging

Fig. 6-4-1 Configuration of refrigerant charging

(Liquid side)

(Gas side)

– 29 –

(OUTDOOR unit)

Opened

Closed

Service port

Be sure to make setting so that liquid can be charged.



When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.



It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.

[ Cylinder with siphon ] [ Cylinder without siphon ]

Refrigerant

cylinder

Gauge manifold

OUTDOOR unit

cylinder

Refrigerant

Gauge manifold

OUTDOOR unit

Electronic

balance

R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the composi­tion of the charged refrigerant changes and the
characteristics of the equipment varies.

6-5. Brazing of Pipes

6-5-1. Materials for Brazing

1) Silver brazing filler

Silver brazing filler is an allo y mainly composed
of silver and copper. It is used to join iron, copper
or copper alloy, and is relatively expensive though
it excels in solderability.

2) Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used
to join copper or copper alloy.

Fig. 6-4-2

6-5-2. Flux

Electronic

balance

Siphon

Phosphor bronze brazing filler tends to react



with sulfur and produce a fragile compound
water solution, which may cause a gas
leakage. Therefore, use any other type of
brazing filler at a hot spring resort, etc., and
coat the surface with a paint.

When performing brazing again at time of



servicing, use the same type of brazing filler.

3) Low temperature brazing filler

Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead. Since it is
weak in adhesive strength, do not use it for
refrigerant pipes.

1) Reason why flux is necessary

• By removing the oxide film and any foreign
matter on the metal surface, it assists the flow
of brazing filler .

• In the brazing process, it prevents the metal
surface from being oxidized.

• By reducing the brazing filler's surface tension,
the brazing filler adheres better to the treated
metal.

– 30 –

Nitrogen gas

cylinder

Pipe

Flow meter

M

Stop valve

From Nitrogen cylinder

Nitrogen
gas

Rubber plug

2) Characteristics required for flux

• Activated temperature of flux coincides with the
brazing temperature.

• Due to a wide effective temperature range, flux
is hard to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and
brazing filler is minimum.

• It excels in coating performance and is harm­less to the human body.

As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.

3) Types of flux

• Noncorrosive flux

Generally, it is a compound of borax and boric
acid.
It is effective in case where the brazing tem­perature is higher than 800°C.

• Activated flux

Most of fluxes generally used for silver brazing
are this type.
It features an increased o xide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.

4) Piping materials for brazing and used braz­ing filler/flux

6-5-3. Brazing

As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.

In order to prev ent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow.

Never use gas other than Nitrogen gas.

(1) Brazing method to prevent oxidation

Attach a reducing valve and a flow-meter to



the Nitrogen gas cylinder.
Use a copper pipe to direct the piping mate-



rial, and attach a flow-meter to the cylinder.
Apply a seal onto the clearance between the



piping material and inserted copper pipe for
Nitrogen in order to prev ent backflow of the
Nitrogen gas.

When the Nitrogen gas is flowing, be sure to



keep the piping end open.
Adjust the flow rate of Nitrogen gas so that it



is lower than 0.05 m³/Hr or 0.02 MPa (0.2kgf/
cm²) by means of the reducing valve.

After performing the steps above, keep the



Nitrogen gas flowing until the pipe cools
down to a certain extent (temperature at
which pipes are touchable with hands).

Remove the flux completely after brazing.



Copper - Copper








Piping

material

Copper - Iron

Iron - Iron

Do not enter flux into the refrigeration cycle.
When chlorine contained in the flux remains

within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.

When adding water to the flux, use water
which does not contain chlorine (e.g. distilled
water or ion-exchange water).

Remove the flux after brazing.

Used brazing

filler

Phosphor copper

Silver

Silver

Used

flux

Do not use

Paste flux

V apor flux

Fig. 6-5-1 Prevention of oxidation during brazing

– 31 –

6-6. Tolerance of Pipe Length and Pipe Head

n Twin system

Refrigerant pipe
specification

Pipe length

(one way)

Height

difference

Total length (L + a or L + b)

Branch pipe length (a, b)

Maximum difference between indoor units

(b – a, or a - b)

Between indoor units ( ∆ h)

Between indoor unit When outdoor unit heigher (H)

and outdoor unit When outdoor unit lower (H)

Number of bent portions

Indoor unit A

Indoor unit B

50 m
15 m

10 m

0.5 m
30 m
30 m

10 m or less

∆h

Distributor

b

Branch pipeaBranch pipe

H

L

Main pipe

Outdoor unit

CAUTION

When planning a layout for Units A and B, comply with the following:

1. The lengths after branching (“a” and “b”) should be equal if feasible.
Install Units A and B so that the difference of the branching lengths becomes less than 10m if the lengths
cannot be equal due to the branch pipe position.

2. Install Units A and B on the same level.
If Units A and B cannot be installed on the same lev el, the difference in level should be limited to 0.5m or less.

3. Be certain to install Units A and B in the same room.
Units A and B cannot be operated independently each other.

– 32 –

n Triple system

Refrigerant pipe
specification

Total length (L + a, L +b, L+c)

Pipe length

(one way)

Height

difference

Between indoor unit When outdoor unit heigher (H)

and outdoor unit When outdoor unit lower (H)

Number of bent portions

Branch pipe length (a, b, c)

Maximum difference between indoor units

(|a – b|, |b – c|, |c – d|)

Between indoor units ( ∆ h)

Indoor unit C Indoor unit B

Branch pipe Branch pipe

50 m
15 m

10 m

0.5 m
30 m
30 m

10 m or less

Indoor unit A

∆ h

b

Branch pipe

ca

Distributor

L

Main pipe

Outdoor unit

CAUTION

When planning a layout for Units A, B and C, comply with the following:

1. The lengths after branching (“a” and “b”, “b” and “c”, “a” and “c”) should be equal if feasible.
Install Units A, B and C so that the difference of the branching lengths becomes less than 10m if the

lengths cannot be equal due to the branch pipe position.

2. Install Units A, B and C on the same level.
If Units A, B and C cannot be installed on the same level, the difference in level should be limited to 0.5 m

or less.

3. Be certain to install Units A and B and C in the same room. Units A, B and C cannot be operated indepen­dently each other.

H

– 33 –

6-7. Additional Refrigerant Amount

n Twin system

<Formula for Calculating Additional Refrigerant Amount>

Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of
calculations by the following formula and operate the air conditioner as it is.

Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg)

+ Branch piping additional refrigerant amount (kg)

αα

=

α × (L – 18) +

αα

αα

α : Additional refrigerant amount per meter of actual main piping length (kg)

αα
γγ

γ : Additional refrigerant amount per meter of actual branch piping length (kg)

γγ

L : Actual length of main piping (m)
a, b : Actual length of branch piping (m)

γγ

γ × (a + b – 4)

γγ

Standard piping length

Main piping Branch piping

18 m 2 m

Connecting pipe diameter

Lab

Ø9.5 Ø6.4 Ø6.4

Indoor unit B

Distributor

b

Branch pipeaBranch pipe

Additional refrigerant amount per Meter (kg/m)

αα

α

αα

0.040 — 0.020

Indoor unit A

∆h

ββ

β

ββ

H

γγ

γ

γγ

L

Main pipe

Outdoor unit

CAUTION

1. Be certain to wire the additional refrigerant amount, pipe length (actual length), head and other
specification on the nameplate put on the outdoor unit for recording.

2. Seal the correct amount of additional refrigerant in the system.

– 34 –

n Triple system

<Formula for Calculating Additional Refrigerant Amount>

Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of
calculations by the following formula and operate the air conditioner as it is.

Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg)

+ Branch piping additional refrigerant amount (kg)

αα

={

α × (L – 28)} + {

αα

αα

α : Additional refrigerant amount per meter of actual main piping length (kg)

αα
γγ

γ : Additional refrigerant amount per meter of actual branch piping length (kg)

γγ

L : Actual length of main piping (m)
a, b, c : Actual length of branch piping (m)

γγ

γ × (a + b + c – 6)}

γγ

Connecting pipe diameter

Labc

Ø9.5 Ø6.4 Ø6.4 Ø6.4

Indoor unit C Indoor unit B

Branch pipe Branch pipe

b

ca

Additional refrigerant amount per Meter (kg/m)

αα

α

αα

0.04 — 0.02

ββ

β

ββ

Indoor unit A

Branch pipe

γγ

γ

γγ

∆ h

H

Distributor

L

Main pipe

Outdoor unit

CAUTION

1. Be certain to wire the additional refrigerant amount, pipe length (actual length), head and other
specification on the nameplate put on the outdoor unit for recording.

2. Seal the correct amount of additional refrigerant in the system.

– 35 –

6-8. Piping Materials and Sizes

n Twin system

Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40mg/10m or less in the
amount of oil stuck on inner walls of pipe and 0.8mm in pipe wall thickness for diameters for diameters 6.4,

9.5 and 12.7mm and 1.0mm, for diameter 15.9mm. Never use pipes of thin wall thickness such as 0.7mm.

In parentheres ( ) are wall thickness

Gas side

Main pipe

Branch pipe

Pipe side

Main pipe

Liquid side

Branch pipe

Ø15.9 (1.0)

Ø12.7 (0.8)
Ø9.5 (0.8)
Ø6.4 (0.8)

n Triple system

Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40 mg/10 m or less in the
amount of oil stuck on inner walls of pipe and 0.8 mm in pipe wall thickness for diameters 6.4, 9.5 and

12.7 mm and 1.0 mm, for diameter 15.9 mm. Never use pipes of thin wall thickness such as 0.7 mm.

<Between outdoor unit and distributor> [Unit: mm]

Outdoor unit

Main pipe

Gas side

Liquid side

∗ ( ): Pipe wall thickness

<Between distributor and indoor unit> [Unit: mm]

Ø15.9 (1.0)

Ø9.5 (0.8)

Indoor unit

Branch pipe

∗ ( ): Pipe wall thickness

Gas side

Liquid side

SM56 type

Ø12.7 (0.8)

Ø6.4 (0.8)

– 36 –

6-9. Branch Pipe

n Twin system

Now the refrigerant pipe is installed using branch pipes supplied as accessories.

• Bend and adjust the refrigerant piping so that the branch pipes and pipe after branching become horizontal.

• Fix the branch pipes onto a wall in a ceiling or onto a column.

• Provide a straight pipe longer than 500mm in length as the main piping of the branches.

OK OK

Horizontal

more

500mm or

Horizontal

NO GOOG NO GOOG

Inclination

6-10. Distributor

n Triple system

Now the refrigerant pipe is installed using distributor supplied as accessories.

• Bend and adjust the refrigerant piping so that the distributor and pipe after branching become horizontal.

• Fix the distributor onto a wall in a ceiling or onto a column.

• Provide a straight pipe longer than 500 mm in length as the main piping of the branches.

Inclination

<How to install distributor>

Branch pipes are horizontal
and collective pipes are vertical

Branch pipes and
collective pipes are horizontal

Branch pipe Branch pipe

<Gas pipe side> <Liquid pipe side>

Branch pipes are horizontal
and collective pipes are vertical

Branch pipes and
collective pipes are horizontal

Collective pipeCollective pipe

<Restrictions in length of the straight area of the branch pipe (main pipe side)>

Provide a straight area of 500 mm or more on the main pipe side of the branch pipe
(for both gas pipe and liquid pipe sides).

NO GOOG

Tilt

500 mm or more

500 mm or more

Be sure to install the pipes
horizontally after branching.

n Air Purging

For the complete information, read the installation manual for outdoor units of air conditioner.

– 37 –

7. CONTROL BLOCK DIAGRAM

7-1. Indoor Control Circuit

*1 Connection Interface is attached to
master unit.
(In case of group control operation)

*2 Weekly timer is not connectable to
the sub remote controller.

Central control remote controller

#1

Connection Interfase

U3

U4

(Option)

Indoor unit

(Option)

P.C. board

(MCC-1440)

TCC-LINK

communication

circuit

Duct type nothing

Louver

motor

Drain
pump

DC20V

Main (Sub) master remote controller

Display

LCD

CPU

Display

LED

Remote controller

communication

circuit

Option Option

B

A

Function setup

Key switch

DC5V

Power
circuit

CN2

*

CN1

2

LCD

driver

Display

LCD

Weekly timer

Function setup

CPU

DC5V

Power

circuit

#2

A B

Key switch

Secondary

battery

#3

AB

Indoor control P.C. board

(MCC-1402)

Remote controller

communication

DC5V

DC12V

circuit

CPU

Driver

EEPROM

TA sensor

TC sensor

TCJ sensor

Float input

Same as

the left

1

*

Same as

the left

Separately sold parts

Outside output

Warning Ready

Thermo. ON

Cool/Heat Fan

Run

for Ceiling type

1

*

Indoor

fan

motor

DC280V

Fan motor

Power circuit

123

12

3

Outdoor unit

CPU

control

circuit

AC

synchronous

signal input circuit

send/receive

Wireless remote controller kit

Receiver P.C. board

Remote controller

communication circuit

Power
circuit

DC5V

Buzzer

Receive circuit Display LED

CPU

– 38 –

Serial
circuit

Temporary

operation SW

Function

setup SW

123

Outdoor

unit

123

Outdoor

unit

7-2. Control Specifications

No.

1

When power
supply is reset

2

Operation mode
selection

Item

Outline of specifications

1) Distinction of outdoor units
When the power supply is reset, the outdoors are

distinguished, and control is exchanged according to
the distinguished result.

2) Setting of speed of the indoor fan/setting whether to
adjust air direction or not.

Based on EEPROM data, speed of the indoor fan or
setting whether to adjust air direction or not is se­lected.

1) Based on the operation mode selecting command
from the remote controller, the operation mode is
selected.

Remote controller

command

STOP

FAN

COOL

DRY
HEAT
AUTO

Ta
(˚C)

+1.5

Tsc

or Tsh

-1.5

COOL

Outline of control

Air conditioner stops.
Fan operation
Cooling operation
Dry operation
Heating operation

• COOL/HEAT operation mode
is automatically selected by Ta
and Ts for operation.

(COOL ON)

(COOL OFF)

HEAT

Remarks

Air speed/
Air direction adjustment

Ta : Room temperature
Ts : Setup temperature
Tsc : Setup temperature in

cooling operation

Tsh: Setup temperature

+ Room temperature
control temperature
compensation

1) Judge the selection of COOL/HEAT mode as shown
in the figure above.

When 10 minutes passed after thermostat had
been turned off, the heating operation (Thermo
OFF) is exchanged to cooling operation if Tsh
exceeds +1.5 or more.

(COOL OFF) and (COOL ON) in the figure indicate
an example.

When 10 minutes passed after thermostat had
been turned off, the cooling operation (Thermo
OFF) is exchanged to heating operation if Tsc
exceeds –1.5 or less.

2) For the automatic capacity control after judgment of
COOL/HEAT, refer to item 4.

3) For the temperature correction of room temperature
control in automatic heating operation, refer to item 3.

– 39 –

No.

3

Item

Room
temperature
control

Outline of specifications

1) Adjustment range Remote controller setup tem­perature (°C)

Wired type
Wireless type

COOL/

DRY

18 to 29
18 to 30

Heating

operation

18 to 29
16 to 30

Auto

operation

18 to 29
17 to 27

Remarks

Automatic

4

capacity control
(GA control)

5

selection

2) Using the item code 06, the setup temperature in
heating operation can be compensated.

Setup data
Setup temp.

compensation

0246

+0°C+2°C+4°C+6°C

Setting at shipment

Setup data 2

1) Based on the difference between Ta and Ts, the
operation frequency is instructed to the outdoor unit.

1) Operation with (HH), (H), (L), or [AUTO] mode is
performed by the command from the remote controller .

2) When the air speed mode [AUTO] is selected, the air
speed varies by the difference betw een Ta and Ts.

<COOL>

Ta (˚C)
+3.0

+2.5
+2.0
+1.5
+1.0

+0.5

Tsc

-0.5

HH
(HH)

H (HH)
H (HH)

L(H)
L(H)

L(H)
L(L)

A

B
C
D

E

F
G

Shift of suction tempera­ture in heating operation

HH > H > L > LLAir speed

• Controlling operation in case when thermo of remote
controller works is same as a case when thermo of
the body works.

• If the air speed has been changed once, it is not
changed for 3 minutes. However when the air volume
is exchanged, the air speed changes.

• When cooling operation has started, the air speed
selects a downward slope, that is, the high position.

• If the temperature is just on the difference boundary,
the air speed does not change.

• Mode in the parentheses indicates one in automatic
cooling operation.

– 40 –

No.

5

Item

Air speed
selection
(Continued)

Outline of specifications

<HEAT>

Ta (˚C)

L(L)

(-0.5)

(0)

(+0.5)

–1.0

Tsh

+1.0

L(H)
H(H)

H

E

D

(HH)

(+1.0)
(+1.5)

(+2.0)

+2.0
+3.0

+4.0

HH

(HH)

C

B
A

Value in the parentheses indicates one when thermostat of
the remote controller works.

Value without parentheses indicates one when thermostat of
the body works.

• If the air speed has been changed once, it is not changed
for 1 minute. However when the air speed is exchanged, the
air speed changes.

• When heating operation has started, the air speed selects a
upward slope, that is, the high position.

• If the temperature is just on the difference boundary, the air
speed does not change.

• Mode in the parentheses indicates one in automatic heating
operation.

• In Tc ≥ 60°C, the air speed increases by 1 step.

Remarks

<Operation of duct only>

Standard

COOL HEAT

UL UL

L

L+ L

L+

M

M

M+ M+

H

H

High ceiling

COOL HEAT

UL UL

LL

L+ L+

M+,M M+,M

HH

Tap

FD
FD
FB
FA
F9
F8
F7
F6
F5
F4
F3
F2
F1

SM562

Revolutions per

minute (rpm)

360 360
610 550
610 550
670 590
730 640
730 640
790 690
850 750
850 750
870 790
880 830
880 830
900 900

SM402
SM452

Tc: Indoor heat exchanger sensor temperature

3) In heating operation, the mode changes to [UL] if thermo-

stat is turned off.

4) If Ta ≥ 25°C when heating operation has started and when

defrost operation has been cleared, it operates with HIGH
(H) mode or (HH) for 1 minute from when Tc has entered
in E zone of cool air discharge preventive control (Item 6).

5) In automatic cooling/heating operation, the revolution

frequency of [HH] is set larger than that in the standard
cooling/heating operation. However the revolution fre­quency is restricted in the automatic heating operation as
shown in the following figure.

[PRE-HEAT] display

Tc
(˚C)

47

42

F5 ® F4

F5

– 41 –

No.

6

Item

Cool air
discharge
preventive
control

Outline of specifications

1) In heating operation, the indoor fan is controlled based
on the detected temperature of Tc sensor or Tcj sensor.
As shown below, the
upper limit of the
revolution frequency
is determined.

Tc
Tcj

(˚C)

32
30
28
26

20
16

HH

UL

OFF

H
L

E zone
D zone

C zone
B zone
A zone

Remarks

In D or E zone, the priority
is given to setup of air
volume exchange .

In A and B zones,
[PRE-HEAT] is displayed.

78Freeze

preventive
control
(Low
temperature
release)

1) The cooling operation (including Dry operation) is
performed as follows based on the detected tempera­ture of Tc sensor or Tcj sensor.

When [J] zone is detected for 6 minutes (Following
figure), the commanded frequency is decreased from
the real operation frequency. After then the commanded
frequency changes every 30 seconds while operation is
performed in [J] zone.

In [K] zone, time counting is interrupted and the opera­tion is held.

When [I] zone is detected, the timer is cleared and the
operation returns to the normal operation.

If the commanded frequency becomes S0 because the
operation continues in [J] zone, the return temperature
A is raised from 5°C to 12°C until [I] zone is detected
and the indoor fan
operates with [M] mode.

(˚C)

5

I

2

J

In heating operation, the freeze-preventive control
works if 4-way v alve is not exchanged and the condition
is satisfied. (However the temperature for J zone
dashing control is changed from 2°C to –5°C.)

Tcj : Indoor heat ex-

changer sensor
temperature

A

K

High-temp
release control

1) The heating oper ation is performed as follows based on
the detected temperature of Tc sensor or Tcj sensor.

• When [M] zone is detected, the commanded fre-

quency is decreased from the real operation fre­quency. After then the commanded frequency
changes ev ery 30 seconds while operation is per­formed in [M] zone.

• In [N] zone, the commanded frequency is held.

• When [L] zone is detected, the commanded fre-

quency is returned to the original value by approx.
6Hz every 60 seconds.

Setup at
shipment

Control temp (°C)

AB

56 (54) 52 (52)

Tcj

(˚C)Tc

A

B

L

M

N

NOTE :

When the operation has started or when Tc or Tcj became
lower than 30°C after start of the operation, temperature is
controlled between values in parentheses of A and B.

– 42 –

Same when thermostat is
turned off.

No.

9

Drain pump control

Item

Outline of specifications

1) In cooling operation (including Dry operation), the
drain pump is usually operated.

2) If the float switch operates while drain pump
operates, the compressor stops, the drain pump
continues the operation, and a check code is
output.

3) If the float switch operates while drain pump stops,
the compressor stops and the drain pump oper­ates. If the float switch keeps operating for approx.
4 minutes, a check code is output.

Remarks

Check code [P10]

1011After-heat

elimination

Flap control

When heating operation stops, the indoor fan operates
with LOW mode f or approx. 30 seconds.

1) Flap position setup

• When the flap position is changed, the position

moves necessarily to downward discharge
position once to return to the set position.

• The flap position can be set up in the following

operation range.

In cooling/dry operation

In heating/fan operation

• In group twin/triple operation, the flap positions

can be set up collectively or individually.

2) Swing setup

• The swinging position can be moved in the

following operation range .

All modes

• In group twin/triple operation, the swinging

positions can be set up collectively or individu­ally.

3) When the unit stops or when a warning is output,
the flap automatically moves downw ard.

4) While the heating operation is ready, the flap
automatically moves upward.

– 43 –

Warning :

A check code is displa yed
on the remote controller,
and the indoor unit stops.
(Excluding [F08] and
[L31])

No.

12

Frequency fixed
operation
(Test run)

Item

Outline of specifications

<In case of wired remote controller>

1. When pushing [CHECK] button for 4 seconds or more,
[TEST] is displayed on the display screen and the
mode enters in Test run mode.

2. Push [ON/OFF] button.

3. Using [MODE] button, change the mode from [COOL]
to [HEAT].

• Do not use other mode than [COOL]/[HEAT] mode.

• During test run operation, the temperature cannot be

adjusted.

• An error is detected as usual.

• A frequency fixed operation is performed.

4. After the test run, push [ON/OFF] button to stop the
operation. (Display in the display part is same as the
procedure in item 1).)

5. Push [CHECK] b utton to clear the test run mode.
([TEST] display in the display part disappears and the
status returns to the normal stop status.)

<In case of wireless remote controller>

1. Turn off the power of the set.
Remove the adjuster with sensors from the ceiling

panel.

2. Turn Bit [1: TEST] of sensor P.C. board switch [S003]
from OFF to ON.

Attach the sensor P.C. board cover and mount the
adjuster with sensors to the ceiling panel.

Turn on the power of the set.

3. Push [ON/OFF] button of the wireless remote controller
and set the operation mode to [COOL] or [HEAT] using
[MODE] button.
(During test run operation, all the display lamps of
wireless remote controller sensors flash.)

• Do not use other mode than [COOL]/[HEAT] mode.

• An error is detected as usual.

• A frequency fixed operation is performed.

4. After the test run, push [ON/OFF] button to stop the
operation.

5. Turn off the power of the set.
Turn Bit [1: TEST] of sensor P.C. board switch [S003]

from ON to OFF.
Mount the adjuster with sensors to the ceiling panel.

Remarks

13 Filter sign display

(Except wireless
type)

1) The operation time of the indoor fan is calculated, the
filter reset signal is sent to the remote controller when
the specified time (2500H) has passed, and it is
displayed on LCD.

2) When the filter reset signal has been received from the
remote controller, time of the calculation timer is
cleared. In this case, the measurement time is reset if
the specified time has passed, and display on LCD
disappears.

– 44 –

[FILTER] goes on.

No.

14

Central control
mode selection

15

Energy-save
control
(By connected
outdoor unit)

Item

Outline of specifications

1) Setting at the central controller side enables to select
the contents which can be operated on the remote
controller at indoor unit side.

2) RBC-AMT31E, RBC-AMT32E

[Last push priority] :

The operation contents can be selected from both
remote controller and central controller of the indoor
unit side, and the operation is performed with the
contents selected at the last.

[Center] :

Start/Stop operation only can be handled on the
remote controller at indoor unit side.

[Operation Prohibited] :

It cannot be operated on the remote controller at
indoor unit side. (Stop status is held.)

1) Selecting [AUTO] mode enables an energy-saving to
be operated.

2) The setup temperature is shifted (corrected) in the
range not to lose the comfort ability according to input
values of various sensors.

3) Data (Input value room temp. Ta, Outside temp. To, Air
volume, Indoor heat exchanger sensor temp. Tc) for
20 minutes are taken the average to calculate
correction value of the setup temperature.

4) The setup temperature is shifted every 20 minutes,
and the shifted range is as follows.
In cooling time : +1.5 to –1.0K
In heating time : –1.5 to +1.0K

Remarks

(No display)

[

] goes on.

[

] goes on.

In a case of wireless type, the
display lamp does not change.
However, contents which can be
operated are same.
The status set in [ ] /
[Operation Prohibited] mode is
notified with the receiving sound
“Pi, Pi, Pi, Pi, Pi” (5 times).

16

Max. frequency
cut control

17

DC motor

1) This control is operated by selecting [AUTO] opera­tion mode.

2) COOL operation mode: the frequency
is controlled according to the following

Ta(˚C)

+4

Normal control

figure if To < 28°C.

+3

Tsc

3) HEAT operation mode: the frequency
is controlled according to the right

Ta(˚C)

Tsh

figure if To > 15°C.

–3
–4

Normal control

1) When the fan operation has started, positioning of the
stator and the rotor are performed.
(Moves slightly with tap sound)

2) The motor operates according to the command from
the indoor controller.

NOTES :

• When the fan rotates while the air conditioner stops

due to entering of outside air, etc, the air conditioner
may operated while the fan motor stops.

• When a fan locking is found, the air conditioner stops,

and an error is displayed.

Max. frequency is restricted
to approximately the rated
cooling frequency

Max. frequency is restricted
to approximately the rated
heating frequency

Check code [P12]

– 45 –

7-3. Indoor Print Circuit Board

7-3-1. Compact 4-way Cassette Type

<MCC-1402>

Microcomputer operation LED

DC fan output

Filter/Option error input EEPROM Connection interface

Indoor/Outdoor
inter-unit cable

Optional
power supply

– 46 –

Remote controller
power supply LED

DC fan return

*1

Drain pump output

Float SW

Fan output

HA (T10)

TA sensor Remote controller inter-unit cable

Optional output TC sensor

Louver
(Used only for 4-way Air Discharge Cassette Type, Under Ceiling type)

DISP

CHK

TCJ sensor

EXCT

Used for
servicing

8. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS

8-1. Indoor Control Circuit

8-1-1. Outline of Main Controls

1. Pulse Motor Valve (P.M.V.) control

1) PMV is controlled with 50 to 500 pulses during operation, respectively.

2) In cooling operation, PMV is controlled with the temperature difference between TS sensor and TC sensor.

3) In heating operation, PMV is controlled with the temperature difference between TS sensor and TE sensor.

4) For the temperature difference in items 2) and 3), 1 to 5K is aimed as the target in both cooling and heating
operations.

5) When the cycle excessively rose in both cooling and heating operations, PMV is controlled by TD sensor.
The aimed value is usually 106°C for SP404, SP454, SM562, SM563, 100°C for SP562 in both cooling and
heating operations.

CAUTION

A sensor trouble may cause a liquid back-flow or abnormal overheat resulting in excessive shortening of the
compressor life. In a case of trouble on the compressor, be sure to check there is no error in the resistance
value an the refrigerating cycle of each sensor after repair and then start the operation.

2. Discharge temperature release control

1) This function controls the operation frequency,
that is, lowers the operation frequency when the
discharge temperature has not lower or the
discharge temperature has rapidly risen during
P.M.V. control.
It subdivides the frequency control up to a unit
of 0.6Hz to stabilize the cycle.

2) When the discharge temperature is detected in
an abnormal stop zone, the unit stops the
compressor and restarts after 2 minutes 30
seconds.
The error counter is cleared when it has
continued the operation for 10 minutes.
If the abnormal stop zone has been detected by
8 times without clearing of counter, an error
“P03” is displayed.

∗ The cause is considered as excessively little

amount of refrigerant, defective PMV, or
clogging of cycle.

abcde

SM562, SM563,

SP404, SP454

SP562

117 107 103 100 93
111 106 100 95 90

[°C]

I1

1–0.5

TD [˚C]

Error stop ("P03" display with 8 times of error counts)

a

Frequency down

b

c

Frequency holding

d

Frequency slow-up
(Up to command)

e

As command is

[A]

Frequency down

Hold

Hold

Normal operation

3. Current release control

The output frequency and the output voltage are controlled by AC current value detected by T02 on the
outdoor P.C. board so that input current of the inverter does not exceed the specified value.

Objective

model

SM562, SM563

SP404, SP454

SP562

11 value [A]

COOL HEAT

10.13 12.00

10.13 10.50

11.55 13.43

* For the cooling only models, only COOL is objective.

– 47 –

8-1-2. Indoor P.C. Board Optional Connector Specifications

Function

Option output

Outside error
input

Filter option
error

CHK
Operation check

DISP display
mode

EXCT demand

Connector

No.

CN60

CN80

CN70

CN71

CN72

CN73

Pin
No.

1
2
3
4

5

6

1
2
3
1

2

1
2
1
2
1

Specifications

DC12V (COM)
Defrost output
Thermo. ON output
Cooling output

Heating output

Fan output

DC12V (COM)
DC12V (COM)
Outside error input
Filter/Option/Humidifier

setup input
0V

Check mode input
0V
Display mode input
0V
Demand input

Remarks

ON during defrost operation of outdoor unit
ON during Real thermo-ON (Comp ON)
ON when operation mode is in cooling system

(COOL, DRY, COOL in AUTO cooling/heating)
ON when operation mode is in heating system

(HEAT, HEAT in AUTO cooling/heating)
ON during indoor fan ON

(Air purifier is used/Interlock cable)
(When continued for 1 minute)

Check code “L30” is output and forced operation stops.

Option error input is controlled. (Protective operation
for device attached to outside is displayed.)

* Setting of option error input is performed from

remote controller. (DN=2A)

Used for operation check of indoor unit.
(Communication with outdoor unit or remote controller
is not performed, but the specified operation such as
indoor fan “H” or drain pump ON is output.)

Display mode enables indoor unit and remote control­ler to communicate. (When power is turned on)

2

0V

Forced thermo-OFF operation in indoor unit

– 48 –

9. TROUBLESHOOTING

9-1. Summary of Troubleshooting

<Wired remote controller type>

1. Before troubleshooting

1) Required tools/instruments

•+ and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check
a) The following operations are normal.

1. Compressor does not operate.

• Is not 3-minutes delay (3 minutes after compressor OFF)?

• Does not thermostat turn off?

• Does not timer operate during fan operation?

• Is not outside high-temperature operation controlled in heating operation?

2. Indoor fan does not rotate.

• Does not cool air discharge prev entive control work in heating operation?

3.Outdoor fan does not rotate or air volume changes.

• Does not high-temperature release operation control work in heating operation?

• Does not outside low-temperature operation control work in cooling operation?

• Is not defrost operation performed?

4. ON/OFF operation cannot be performed from remote controller.

• Is not the control operation performed from outside/remote side?

• Is not automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed, the
operation cannot be performed for maximum approx. 5 minutes after power-ON.)

b) Did you return the cabling to the initial positions?
c) Are connecting cables of indoor unit and remote controller correct?

2. Troubleshooting procedure

When a trouble occurred, check the parts along with the following procedure .

Trouble Confirmation of check code display Check defective position and parts.

→→

NOTE :

For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer
noise is considered except the items to be checked. If there is any noise source, change the cables of the
remote controller to shield cables.

– 49 –

<Wireless remote controller type>

1. Before troubleshooting

1) Required tools/instruments

•+ and – screwdrivers, spanners, radio cutting pliers, nippers, etc.

• Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check
a) The following operations are normal.

1. Compressor does not operate.

• Is not 3-minutes delay (3 minutes after compressor OFF)?

• Does not thermostat turn off?

• Does not timer operate during fan operation?

• Is not outside high-temperature operation controlled in heating operation?

2. Indoor fan does not rotate.

• Does not cool air discharge prev entive control work in heating operation?

3) Outdoor fan does not rotate or air volume changes.

• Does not high-temperature release operation control work in heating operation?

• Does not outside low-temperature operation control work in cooling operation?

• Is not defrost operation performed?

4) ON/OFF operation cannot be performed from remote controller.

• Is not forced operation perf ormed?

• Is not the control operation performed from outside/remote side?

• Is not automatic address being set up?
a) Did you return the cabling to the initial positions?
b) Are connecting cables between indoor unit and receiving unit correct?

2. Troubleshooting procedure

(When the power is turned on at the first time or when indoor unit address setting is changed, the operation
cannot be performed for maximum approx. 5 minutes after power-ON.)

When a trouble occurred, check the parts along with the following procedure .

Confirmation of lamp display

Trouble

1) Outline of judgment
The primary judgment to check where a trouble occurred in indoor unit or outdoor unit is performed with

the following method.

→→

(When 4-way air discharge cassette type
wireless remote controller is connected)

Check defective
position and parts.

Method to judge the erroneous position by flashing indication on the display part of indoor unit
(sensors of the receiving unit)

The indoor unit monitors operating status of the air conditioner , and the blocked contents of self-diagnosis
are displayed restricted to the following cases if a protective circuit works.

– 50 –

– 51 –

9-2. Check Code List

Wireless sensor

lamp display

Operation

¥

Timer Ready

ll

ll

¥

ll

¥

ll

¥

ll

¥¥

¥¥

¥¥¡

¥¥¡

¥¥¡

¥¥

¥¥

¥

ll

¥

l

¥

l

¥

l

¥

l

¥

l

¥

l
l

l
l

l

l

¥

¥

¥

Wired remote

controller

Check code

E03

E04

E08

E10

E18

F01

F02

F04

F06

F08

F10

F29

H01

H02

H03

L03

L07

L08

Error mode detected by indoor and outdoor units

Diagnostic function

Cause of operation

No communication from remote controller (including wireless) and
communication adapters

The serial signal is not output from outdoor unit to indoor unit.

• Miscabling of inter-unit cables

• Defective serial sensing circuit on outdoor P.C. board

• Defective serial receiving circuit on indoor P.C. board

Duplicated indoor unit addresses

Communication error between indoor MCU

• Communication error between fan driving MCU and main MCU

Regular communication error between master and sub indoor units or
between main and sub indoor units

Coming-off, disconnection or short of indoor heat exchanger sensor (TCJ)

Coming-off, disconnection or short of indoor heat exchanger sensor (TC)

Coming-off, disconnection or short of outdoor temperature sensor (TD)

Coming-off, disconnection or short of outdoor temperature sensor (TE/TS)

Coming-off, disconnection or short of outdoor temperature sensor (TO)

Coming-off, disconnection or short of indoor heat exchanger sensor (TA)

Indoor EEPROM error

• EEPROM access error
Breakdown of compressor

• Displayed when error is detected

Compressor does not rotate.

• Over-current protective circuit operates after specified time passed
when compressor had been activated.

Current detection circuit error

• Current value at AC side is high even during compressor-OFF.

• Phase of power supply is missed.

Duplicated indoor master units

There is group line in individual indoor units.

Unsetting of indoor group address

Status of

air conditioner

Stop

(Automatic reset)

S top

(Automatic reset)

Stop

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

Stop

Operation
continues.

Stop

(Automatic reset)

Stop

(Automatic reset)

Stop

Stop

Stop

Stop

Stop

Stop

Condition

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

: Flash, ¡ : Go on, l : Go off

¥

Judgment and measures

1. Check cables of remote controller and communication adapters.

• Handy remote controller LCD display OFF (Disconnection)

• Central remote controller [97] check code

1. Outdoor unit does not completely operate.

• Inter-unit cable check, correction of miscabling, case thermo operation

• Outdoor P.C. board chec k, P.C. board cables check

2. In normal operation
P.C. board (Indoor receiving/Outdoor sending) check

1. Check whether there is modification of remote controller connection (Group/Individual)
or not after power has been turned on (finish of group configuration/address check).
* If group configuration and address are not normal when the power has been turned

on, the mode automatically shifts to address setup mode. (Resetting of address)

1. Check cables of remote controller.

2. Check power cables of indoor unit.

3. Check indoor P.C. board.

1. Check cables of remote controller.

2. Check indoor power cable.

3. Check indoor P.C. board.

1. Check indoor heat exchanger temperature sensor (TCJ).

2. Check indoor P.C. board.

1. Check indoor heat exchanger temperature sensor (TC).

2. Check indoor P.C. board.

1. Check outdoor temperature sensor (TD).

2. Check outdoor CDB P.C. board.

1. Check outdoor temperature sensor (TE/TS).

2. Check outdoor CDB P.C. board.

1. Check outdoor temperature sensor (TO).

2. Check outdoor CDB P.C. board.

1. Check indoor heat exchanger temperature sensor (TA).

2. Check indoor P.C. board.

1. Check indoor EEPROM. (including socket insertion)

2. Check indoor P.C. board.

1. Check power voltage. A C200V ±20V

2. Overload operation of refrigerating cycle

3. Check current detection circuit at AC side.

1. Trouble of compressor (Compressor lock, etc.) : Replace compressor.

2. Defective cabling of compressor (Phase missing)

3. Phase-missing operation of power supply (3-phase model)

1. Compressor immediately stops even if restarted. : Check IPDU .

2. Phase-missing operation of power supply
Check 3-phase power voltage and cables .

1. Check whether there is modification of remote controller connection (Group/Individual)
or not after power has been turned on (finish of group configuration/address check).
* If group configuration and address are not normal when the power has been turned

on, the mode automatically shifts to address setup mode. (Resetting of address)

: Flash, ¡ : Go on, l : Go off

¥

Wireless sensor

lamp display

Operation

¥

l

Timer Ready

l

¥

¥¡¥

¥¡¥

No check code is displayed.

¥

l

¥

l

¥¥

– 52 –

l

l

¥

¥

¥

¥

¥

¥¥

l

l

l
l
l

¥

l

¥

¥

¥

¥

¥

¥

¥

Wired remote

controller

Check code

L09

L29

L30

L31

P03

P04

P10

P12

P19

P22

P26

P29

P31

Diagnostic function

Cause of operation

Unset indoor capacity

Outdoor unit and other errors

• Communication error between CDB and IPDU (Coming-off of connector)

• Heat sink temperature error (Detection of temperature over specified value)
Abnormal outside interlock input

Phase detection protective circuit operates. (Normal models)

Fan motor thermal protection

Discharge temperature error

• Discharge temperature over specified value was detected.

High-pressure protection error by TE sensor
(Temperature over specified value was detected.)

Float switch operation

• Disconnection, coming-off, defective float switch contactor of float circuit

Indoor DC fan error

Error in 4-way valve system

• Indoor heat exchanger temperature lowered after start of heating operation.

Outdoor DC fan error

Inverter over-current protective circuit operates. (For a short time)
Short voltage of main circuit operates.

IPDU position detection circuit error

Own unit stops while warning is output to other indoor units.

Status of

air conditioner

Stop

Stop

Stop

Operation continues.
(Compressor stops.)

Stop

Stop

Stop

Stop

Stop

Stop

(Automatic reset)

Stop

Stop

Stop

Stop (Sub unit)

(Automatic reset)

Condition

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Displayed when
error is detected

Judgment and measures

1. Set the indoor capacity. (DN=I1)

1. Check cables of CDB and IPDU.

2. Abnormal overload operation of refrigerating cycle

1. Check outside devices.

2. Check indoor P.C. board.

1. Check power phase order (Reversed phase)/phase missing.

2. Check outdoor P.C. board.

1. Check thermal relay of fan motor.

2. Check indoor P.C. board.

1. Check refrigerating cycle. (Gas leak)

2. Trouble of PMV

3. Check Td sensor.

1. Overload operation of refrigerating cycle

2. Check outdoor temperature sensor (TE).

3. Check outdoor CDB P.C. board.

1. Defect of drain pump

2. Clogging of drain pump

3. Check float switch.

4. Check indoor P.C. board.

1. Defective detection of position

2. Over-current protective circuit of indoor fan driving unit operates.

3. Lock of indoor fan

4. Check indoor P.C. board.

1. Check 4-way valve.

2. Check indoor heat exchanger (TC/TCJ) sensor.

3. Check indoor P.C. board.

1. Defective detection of position

2. Over-current protective circuit of outdoor fan driving unit operates.

3. Lock of outdoor fan

4. Check outdoor CDB P.C. board.

1. Inverter immediately stops even if restarted. : Compressor motor rare short

2. Check IPDU. : Cabling error

1. Position detection circuit operates even if operating compressor by removing
3P connector. : Replace IPDU.

1. Judge sub unit while master unit is in [E03], [L03], [L07], [L08].

2. Check indoor P.C. board.

For an error mode detected in outdoor unit, the fan operates because sub unit of a group operation does not communicate with the outdoor unit.

Error mode detected by remote controller

: Flash, ¡ : Go on, l : Go off

¥

Wireless sensor

lamp display

Operation

Timer Ready

———

¥ll

¥ll

¥ll

– 53 –

¥¡¥

Wired remote

controller

Check code

No check code

is displayed.
(Remote controller
does not operate.)

E01

E02

E09

L20

Diagnostic function

Cause of operation

No communication with master indoor unit

• Remote controller cable is not correctly connected.

• Power of indoor unit is not turned on.

• Automatic address cannot be completed.

No communication with indoor master unit

• Disconnection of inter-unit cable between remote
controller and master indoor unit
(Detected at remote controller side)

Signal sending error to indoor unit
(Detected at remote controller side)

Multiple master remote controllers are recognized.
(Detected at remote controller side)

Duplicated indoor central addresses on communication
of central control system
(Detected by central controller side)

Status of

air conditioner

Stop

Stop

* When there is center, operation continues.

* When there is center , operation continues.

(Automatic restart)

Stop

(Automatic restart)

(Sub unit continues operation.)

Stop

Stop

(Automatic restart)

Condition

—

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

Judgment and measures

Remote controller power error, Defective indoor EEPROM

1. Check remote controller inter-unit cables.

2. Check remote controller.

3. Check indoor power cables.

4. Check indoor P.C. board.

5. Check indoor EEPROM. (including socket insertion)
: Phenomenon of automatic address repetition occurred.

Signal receiving of remote controller is defective.

1. Check remote controller inter-unit cables.

2. Check remote controller.

3. Check indoor power cables.

4. Check indoor P.C. board.

Signal sending of remote controller is defective.

1. Check sending circuit inside of remote controller.
: Replace remote controller.

1. Check there are multiple master units for 2 remote controllers
(including wireless).
: Master unit is one and others are sub units.

1. Check address setup of central control system network. (DN = 03)

Wireless sensor

lamp display

Operation

Timer Ready

———

———

———

Wired remote

controller

Check code

C05

C06

P30

Error mode detected by central remote controller

Cause of operation

Sending error central remote controller

Receiving error in central remote controller
Differs according to error contents of unit with

occurrence of alarm.

Diagnostic function

Status of

air conditioner

Operation continues

Operation continues

Continuation/Stop

(Based on a case)

Condition

Displayed when

error is detected

Displayed when

error is detected

Displayed when

error is detected

: Flash, ¡ : Go on, l : Go off

¥

Judgment and measures

1. Check communication line/miscabling/ Check power of indoor unit.

2. Check communication. (U3, U4 terminals)

3. Check network adapter P.C. board.

4. Check central controller (such as central control remote controller, etc.).

5. Terminal resistance check (connection interface SW01)

Check the check code of corresponding unit by remote controller

9-3. Error Mode Detected by LED on Outdoor P.C. Board

RAV-SP562A T-E only
<SW801: LED display in bit 1, bit 2 OFF>

• When multiple errors are detected, the latest error is displayed.

• When LED display is ¡ (Go on), there is the main cause of trouble on the objective part of control at CDB
side and the unit stops.

• When LED display is ¥ (Flash), there is the main cause of trouble on the objective part of control at IPDU
side and the unit stops.

• When case thermostat operates, the communication is interrupted on the serial circuit.
If continuing the case thermostat operation, a serial communication error occurs because serial sending to

the indoor unit is interrupted.

CDB side

IPDU side

No.

1

TE sensor error

2

TD sensor error

3

TS sensor error

4

TO sensor error

5

Discharge temp. error

6

DC outdoor fan error

7

Communication error between IPDU
(Abnormal stop)

8

High-pressure release operation

9

EEPROM error

10

Communication error between IPDU
(No abnormal stop)

11

IGBT short-circuit protection

12

Detection circuit error

13

Current sensor error

14

Comp. lock error

15

Comp. breakdown

Item

Check

code

Type A

F06
F04
F06
F08
P03
P22

L29

P04

—
—

P26
P29
H03
H02
H01

LED display

D800 D801 D802 D803

(Red) (Yellow) (Yellow) (Yellow)

¡
¡¡

ll
l
l

¡¡¡

¡

l

¡¡

ll

¥

l

¥¥

ll

¥

lll

ll

¡

¡

ll

¡¡

l

l
l

ll

¡

l
l

¡¡

¡

¡
¡

lll

¥

ll
ll

l

¥
¥

l
l

: Go on l : Go off ¥ : Flash (5Hz)

¡

<<Check code>>

The check codes are classified into Type A and Type B according to the used remote controller.
Be sure to check the remote controller which you use .

Type A :
Neutral 2-cores type wired remote controller such as RBC-AMT31E, RBC-AMT32E, RBC-AS21E2,
and wireless remote controller kit such as TCB-AX21E2

– 54 –

9-4. Troubleshooting Procedure for Each Check Code

9-4-1. Check Code

[E01 error]

Is inter-unit cable of A and B normal?

YES

Is there no disconnection

or contact error of connector on harness

from terminal block of indoor unit?

NO

NO

Is group control operation?

YES

Is power of all indoor units turned on?

YES

Is power supplied to remote controller?

AB terminal: Approx. DC18V

YES

Are two remote controllers

set without master unit?

NO

NO

YES

NO

NO

YES

Correct inter-unit cable of remote controller.

Correct connection of connector.

Check circuit cables.

Check power connection of indoor unit.

(Turn on power again.)

Check indoor P.C. board (MCC-1402).

Defect → Replace

Correct as a master unit/a sub unit

(Remote controller address connector)

[E09 error]

Are two remote controllers

set without master unit?

NO

YES

Check remote controller P.C. board.

Defect → Replace

Correct as a master unit/a sub unit

(Remote controller address connector)

Check remote controller P.C. board.

Defect → Replace

– 55 –

[E04 error]

Does outdoor unit operate?

YES

NO

Is setup of group address correct?

YES

Are 1, 2, 3 inter-unit cables normal?

YES

Are connections from connectors

of inter-terminal blocks (1, 2, 3)
of indoor/outdoor units normal?

YES

2 and 3 of inter-terminal blocks (1, 2, 3)

Does voltage between

of indoor unit vary?*

YES

As shown in the following figure, perform measurement

*

within 20 seconds after power ON.

NO

NO

NO

NO

Check item code [14].

Correct inter-unit cable.

Correct connection of connector.

Check indoor P.C. board

(MCC-1402).

Defect → Replace

Check indoor P.C. board (MCC-1402).
Defect → Replace

Check outdoor P.C. board
Defect → Replace

MCC-5009
MCC-1531 and MCC-1438

Does case thermo. operate?

NO

Black

3

White

Inter-terminal block

YES

RAV-SM562AT-E, RAV-SM563AT-E
RAV-SP404AT-E, RAV-SP454AT-E

RAV-SP562AT-E

2

1

S5277G

Check/Correct charged

refrigerant amount.

– 56 –

[E10 error]

Check indoor control P.C. board (MCC-1402).
Defect → Replace

[E18 error]

Is inter-unit cable of A and B normal?

YES

Is there no disconnection

or contact error of connector on harness

from terminal block of indoor unit?

NO

Is group control operation?

NO

Check indoor P.C. board (MCC-1402).

Defect → Replace

NO

YES

YES

Is power of all indoor units turned on?

[E08, L03, L07, L08 error]

E08 : Duplicated indoor unit numbers
L03 : Two or more master units in a group control
L07 : One or more group addresses of [Individual] in a group control
L08 : Unset indoor group address (99)

Correct inter-unit cable of remote controller.

Correct connection of connector.

Check circuit cables.

NO

Check power connection of indoor unit.

(Turn on power again.)

If the above is detected when power has been turned on, the mode automatically enters in automatic ad­dress setup mode. (Check code is not displayed.)

Howe ver, if the above is detected during automatic address setup mode, the check code may be display ed.

[L09 error]

Is capacity of indoor unit unset?

YES

NO

Set capacity data of indoor unit.

(Setup item code (DN) = 11)

Check indoor P.C. board (MCC-1402).

Defect → Replace

– 57 –

[L20 error]

Are cable connections to communication line U3, U4 normal?

YES

Are not multiple same central

control network addresses connected?

NO

Check central controller (including connection interface)

indoor P.C. board. Defect → Replace.

[L30 error]

Are outside devices of connector CN80 connected?

YES

Do outside devices normally operate?

YES

Check operation cause.

NO

YES

NO

NO

Correct cable connection

Correct central control network address.

Check indoor P.C. board (MCC-1402).

Defect → Replace

Check outside devices.

Defect → Replace

[P10 error]

Is connection of float switch connector

(Indoor control P.C. board CN34) normal?

YES

Does float

switch operate?

YES

Does drain pump

operate?

YES

Check drain pipe, etc.

[F10 error]

Is connection of TA sensor connector

(indoor P.C. board CN104) normal?

NO

Is circuit

cabling normal?

YES

Is power of drain

pump turned on?

YES

NO

Correct connection of connector.

NONO

NONO

Check and correct cabling/wiring.

Check indoor P.C. board (MCC-1402).

Defect → Replace

Check indoor P.C. board (MCC-1402).

Defect → Replace

Replace drain pump.

Check cabling.

Correct connection of connector.

YES

Are characteristics of TA sensor resistance value normal?

YES

* Refer to Characteristics-1.

– 58 –

NO

Replace T A sensor.

Check indoor P.C. board (MCC-1402).

Defect → Replace

[P12 error]
<Only for 4-way air discharge cassette type models>

Turn off the power.

Are not there connections errors or

disconnection on connectors CN333 and CN334

of indoor unit P.C. board (MCC-1402)?

NO

Remove connectors CN333 and

CN334 of indoor unit P.C. board

(MCC-1402).

Does the fan rotate without trouble

when handling the fan with hands?

YES

Are resistance values between phases

at fan motor connector CN333 motor side of

indoor P.C. board (MCC-1402) correct? *1

YES

YES

Correct connection of connector.

NO

Replace indoor fan motor.

NO

Replace indoor fan motor.

1

*

• Are not coil windings between
between

5

(Black lead) and (Red lead) opened or shorted?

3 5

(White lead) and (Black lead), between

1

1 3

(Red lead) and (White lead),

→ For resistance, see the following values.
Approx. 70 to 100Ω

Is resistance value of fan motor connector

CN333 at motor side of indoor P.C. board

(MCC-1402) correct? *2

YES

Is signal output of indoor fan motor

position detection correct? *3

YES

Check indoor P.C. board

(MCC-1402).

Defect → Replace

NO

2

*

Check resistance of fan motor position detection circuit.
Is not coil winding between (Yellow lead) and (Pink lead)

1

Replace indoor fan motor.

4

opened or shorted? → Resistance: Approx. 5 to 20kΩ

NO

3

*

Check fan motor position detection signal.

• Using a tester, measure the voltage between CN334 and of

Replace indoor fan motor.

1 5

indoor P.C. board (MCC-1402) under condition that CN333 and
CN334 are mounted and the power is turned on.
→ Rotate the fan slowly with hands, and check the pin voltage
swings between 0 to 5V voltage.

• Between and : 5V

4 5

CN333

– 59 –

CN334

[P22 error]

Are connections of CN301 and CN300

when handling the fan with hands under condition

of removing CN301 and CN300 from P.C. board?

The status that the resistance values

for 40Ω motor (ICF-140-40) and 25 to 55Ω

for 60Ω motor (ICF-140-60-1) is normal.
Between
Between
Between

of motor winding of connector (CN301)

5k to 20kW resistance values between

of P.C. board correct?

YES

Does the fan rotate without trouble

YES

between leads below are 50 to 80Ω

1

(Red lead) and 2 (White lead)

2

(White lead) and 3 (Black lead)

3

(Black lead) and 1 (Red lead)

YES

The status that there is

1

(Yellow lead) and 4 (Pink lead) of

motor position detection of

connector (CN300) is normal.

NO

NO

NO

CN301, ∗ CN303

CN300

CN300 : Motor coil winding
CN301 : Motor position detection

∗

CN301, CN303 : Motor coil winding

CN300, CN302 : Motor position detection

SP562AT-E

YES

Normal fan motor

(Control or CDB P.C. board)

(Control P.C. board or CDB P.C. board)

Defective fan motor

NOTE :

However, GND circuit error inside of the motor is rarely detected even if the above check is carried out.
When the circuit does not become normal even if P.C. board has been replaced, replace outdoor fan motor.

Single phase

Objective P.C. board
Fan motor winding
Motor position detection

RAV-SM562AT-E, SM563AT-E

RAV-SP404AT-E, SP454AT-E

Control P.C. board CDB P.C. board

CN300 CN301
CN301 CN300

RAV-SP562AT-E

– 60 –

[P19 error]

NO

Check and replace

electron expansion valve.

NO

* Refer to
Characteristics-2.

Replace TC sensor.

Is operation of

4-way valve normal?

YES

Is flow of refrigerant

by electron expansion

valve normal?

YES

Are characteristics

of TC sensor resistance

value normal?

YES

NO

Is voltage applied

to 4-way valve coil terminal

in heating operation?

YES

Is circuit cable normal?

YES

Check CDB P.C. board.

YES

NO

Check 4-way valve

Defect → Replace

NO

Check and correct circuit.

NO

Check indoor P.C. board.

Defect → Replace

* For RAV-SM562AT-E, check control P.C. board.

Check CDB P.C. board.

Defect → Replace

• In cooling operation, if high pressure is abnormally raised, [P19 error]/[08 error] may be displayed. In this
case, remove cause of pressure up and then check again referring to the item [P04 error]/[21 error].

[F02 error]

Is connection of TC sensor connector

(Indoor P.C. board CN101) normal?

YES

Are characteristics of

TC sensor resistance value normal?

YES

NO

Correct connection of connector.

NO

Replace TC sensor.

* Refer to Characteristics-2.

Check indoor P.C. board

(MCC-1402).

Defect → Replace

– 61 –

[F01 error]

Is connection of TCJ sensor connector

(Indoor P.C. board CN102) normal?

YES

Are characteristics of

TCJ sensor resistance value normal?

YES

Check indoor P.C. board

(MCC-1402).

Defect → Replace

[P26 error]

Is power voltage normal?

NO

Correct connection of connector.

NO

Replace TCJ sensor.

∗ Refer to Characteristics-2.

NO

Improve the power supply line.

Are connections of

cabling/connector normal?

YES

Does RY01 relay of

IPDU operate?

NO

YES

Is not AC fuse fused?

Replace IPDU.

∗ Replace control P.C. board of
RAV-SM562AT-E,
RAV-SM563AT-E,
RAV-SP404AT-E,
RAV-SP454AT-E.

YES

NO

∗ For RAV-SM562AT-E, RAV-SM563AT-E, RAV-SP404AT-E, RAV-SP454AT-E
check RY01 on the control P.C. board.

YES

∗ Single-phase type is not provided to
RAV-SM562AT-E, RAV-SM563AT-E
RAV-SP404AT-E, RAV-SP454AT-E.

NO

Are not “P26” and “14” errors output

when an operation is performed by

removing 3P connector of compressor?

Is compressor normal?

YES

Check and correct circuit cables.
Correct connection of connector.
Check and correct reactor connection.

NO

YES

Replace IPDU.

∗ Replace control P.C. board of
RAV-SM562AT-E, RAV-SM563AT-E
RAV-SP404AT-E, RAV-SP454AT-E.

NO

Check IPDU.

Defect → Replace

Check rare short of compressor trouble.

Defect → Replace

– 62 –

[P29 error]

Are connections of

cable/connector normal?

YES

Is compressor normal?

YES

NO

NO

Is not earthed?

NO

Is not winding shorted?

(Is resistance between windings 0.6 to 1.2Ω?)

NO

Is not winding opened?

NO

Check IPDU P.C. board.

Defect → Replace

YES

YES

∗ For RAV-SM562AT-E, RAV-SM563AT-E,
RAV-SP404AT-E, RAV-SP454AT-E,
replace control P.C. board.

YES

Check and correct circuit cabling
such as cabling to compressor.

Compressor error → Replace

Compressor error → Replace

Compressor error → Replace

[H03 error]

Are cablings of power and

current sensor normal?

YES

Check IPDU.

Defect → Replace

NO

∗ For RAV-SM562AT-E, RAV-SM563AT-E, RAV-SP404AT-E, RAV-SP454AT-E
replace control P.C. board.

Check and correct circuit cables.

– 63 –

[F06 error]

Are connections of

TE/TS sensor connectors of

CDB CN604/CN605 normal?

YES

Are characteristics of TE/TS sensor

resistance values normal?

YES

Check CDB.

Defect → Replace

[F04 error]

Is connection of TD sensor connector

of CDB CN600 normal?

NO

∗ (For RAV-SM562AT-E, RAV-SM563AT-E, RAV-SP404AT-E, RAV-SP454AT-E,
CN600 TE sensor and CN603 TS sensor)

NO

∗ Refer to Characteristics-3.

NO

Correct connection of connector.

Replace TE and TS sensors.

Correct connection of connector.

YES

Are characteristics of TD sensor

resistance value normal?

YES

Check control P.C. board.

Defect → Replace

[F08 error]

Is connection of TO sensor connector

of CDB CN601 normal?

YES

∗ (For RAV-SM562AT-E, RAV-SM563AT-E,
RAV-SP404AT-E, RAV-SP454AT-E, CN601 TD sensor)

NO

∗ Refer to Characteristics-4.

NO

∗ (For RAV-SM562AT-E, RAV-SM563AT-E,
RAV-SP404AT-E, RAV-SP454AT-E, CN602 TO sensor)

Replace TD sensor.

Correct connection of connector.

Are characteristics of TO sensor

resistance value normal?

YES

Check CDB.

Defect → Replace

NO

∗ Refer to Characteristics-5.

– 64 –

Replace TO sensor.

[L29 error]

In the case of SUPER DIGITAL INVERTER

CDB CN800 and CDB IPDU CN06

Are connections of

connectors normal?

YES

Was the error just after

power ON determined?

NO

Is there no abnormal overload?

NO

Is IPDU P.C. board come to

closely contact with heat sink?

YES

Is power voltage normal?

NO

In the case of DIGITAL INVERTER

Is power voltage normal?

YES

Is compressor normal?

YES

NO

YES

YES

NO

YES

NO

NO

Are cabling/connector normal?

YES

NO

Correct connection of connector.

Check cabling between IPDU
and CDB and connector.

IPDU P.C. board error

Defect → Replace

Improve and eliminate the cause.

Correct mounting.

Check IPDU P.C. board.

Defect → Replace

Improve power line.

And power on once again.

Improve power line.

And power on once again.

Fault of compressor.

Check rare short

Defect → Replace

[H02 error]

Is power voltage normal?

YES

Are connections of

cable/connector normal?

YES

Is compressor normal?

YES

NO

NO

NO NO

Is there no

slackened refrigerant?

YES

Does electron expansion

valve normally operate?

YES

Check IPDU and CDB.

Defect → Replace

NO

Check IPDU P.C. board.

Defect → Replace

Improve power line.

Check and correct circuit cabling such
as cabling to compressor
(phase missing) and connector.

Compressor lock → Replace

Check TE and TS sensors. → Replace

Check electron expansion valve. → Replace

∗ For RAV-SM562AT-E, RAV-SM563AT-E,
RAV-SP404AT-E, RAV-SP454AT-E,
replace control P.C. board.

– 65 –

[P03 error]

Is protective control such as

discharge temprelease control normal?

YES YES

Is charged refrigerant amount normal?

YES

Is not abnormal overload?

NO

Are characteristics of

TD sensor resistance value normal?

YES

NO

NO

YES

NO

* Refer to Characteristics-4.

Are connections of

cable/connector normal?

NO

Correct the cabling and
connection of connector.

Check parts. Defect → Replace

Check and correct the charged
refrigerant amount.

Improve and delete the cause

Replace TD sensor.

Check CDB.

Defect → Replace

[H01 error]

Is power voltage normal?

Is not abnormal overload?

Is the circuit detected by

current sensor normal?

YES

NO

YES

NO

YES

NO

∗ For RAV-SM562AT-E, RAV-SM563AT-E,
RAV-SP404AT-E, RAV-SP454AT-E,
replace control P.C. board.

Improve power line.

Improve and delete the cause.

Check and correct circuit cables.

Check IPDU.

Defect → Replace

∗ For RAV-SM562AT-E, RAV-SM563AT-E,
RAV-SP404AT-E, RAV-SP454AT-E,
replace control P.C. board.

– 66 –

[P04 error]

Is high-voltage

protective operation by

TE sensor normal?

YES

Does cooling outdoor fan

normally operate?

YES

NO

Is connection of

cabling connector normal?

YES

NO

Is connection of

connector normal?

YES

Is fan motor normal?

NO

NO

NO

Correct connection

of cabling connector.

Check TE sensor.

Defect → Replace

Correct connection

of connector.

Replace fan motor.

NO

Does PMV normally operate?

Check TE, TC, TS sensors.

Replace electron expansion valve.

Check charged refrigerant amount.

Check liquid/gas valves.

Check abnormal overload.

YES

YES

Do not TD and TO sensors

come off the detection part?

YES

Are characteristics of

TD, TO, TC sensor resistance

values normal?

YES

∗ Refer to Characteristics-3 and 4.

∗ For RAV-SM562AT-E, RAV-SM563AT-E,

RAV-SP404AT-E, RAV-SP454AT-E,
replace control P.C. board.

NO

NO

Correct coming-off.

Replace TD, T O ,

and TC sensors.

Check CDB.

Defect → Replace

– 67 –

[C06 error] (Central controller)

Is U3, U4 communication line normal?

YES

Are connections between connectors

CN51 of connection interface P.C. board and

connectors CN51 of indoor P.C. board normal?

YES

Is A, B communication line normal?

YES

Is there no connection error of power line?

NO

Is not power of source power supply turned on?

NO

Did a power failure occur?

NO

NO

NO

YES

YES

YES

Correct communication line.

Correct connection of connector.

Check connections of A, B terminal blocks.

Correct communication line of remote controller.

Correct power cable.

Turn on the source power supply.

Clear the check code.

NO

Is there no noise source, etc.?

NO

Can central remote controller

control normally other indoor units?

Is handling of central remote controller reflected

on the operation status of indoor unit?

YES

Can handy remote controller

control normally other indoor units?

YES

YES

NO

(Same as others)

NO

Eliminate noise, etc.

Check central controller.

Defect → Replace

Check indoor P.C. board (MCC-1402).

Defect → Replace

Check connection interface P.C. board.

Defect → Replace

– 68 –

[E03 error] (Master indoor unit)

[E03 error] is detected when the indoor unit cannot receive a signal sent from the main remote controller (and
central controller).

In this case, check the communication cables of the remote controllers A and B, the central control system X
and Y. As communication is disabled, [E03] is not displayed on the main remote controller and the central
controller. [E01] is displayed on the main remote controller and [97 error] on the centr al controller, respectively.

If [E03] occurs during an operation, the air conditioner stops.

[F29 error] / [12 error]

[F29 error] or [12 error] indicates detection of trouble which occurred on IC10 non-volatile memory (EEPROM)
on the indoor unit P.C. board during operation of the air conditioner. Replace the service P.C. board.

* If EEPROM has not been inserted when the power was turned on or if EEPROM data never be read/written,

the automatic address mode is repeated. In this time, the central controller displays [97 error].

(Power ON)

(Approx. 3 minutes)

[SET] is displayed on

main remote controller.

(Approx. 1 minute)

[SET] goes off.

(Repetition)

indoor unit P.C. board flashes

with 1Hz for approx. 10 seconds.

LED (D02) on

Reboot
(Reset)

[P31 error] (Sub indoor unit)

When the master unit of a group operation has detected [E03], [L03], [L07], or [L08] error, the sub unit of the
group operation detects [P31 error] and then it stops. There is no display of the check code or alarm history of
the main remote controller.

(In this model, the mode enters in automatic address set mode when the master unit has detected [E03], [L03],
[L07], or [L08] error.)

– 69 –

9-4-2. Relational Graph of Temperature Sensor Resistance Value and Temperature

Resistance

(kW)

20

10

200

0

10 20 4030 50

Temperature [˚C] Temperature [˚C]

Caracteristics-3

TA sensor

Caracteristics-1

Resistance

(kW)

40

TC, TCJ sensor

30

20

10

0

0

–

10 10 3020 40 50 60 70

Caracteristics-2

TE, TO, TS sensor

20

Resistance

(kW)

(10˚C or lower)

100

200

Resistance

(kW)

(50˚C or lower)

100

Resistance

(kW)
(10˚C or higher)

10

0

100-10 20 4030 50 60 70

0

Temperature [˚C]

TD sensor

Caracteristics-4

20

Resistance

(kW)
(50˚C or higher)

10

0

50 100

0

Temperature [˚C]

– 70 –

10. REPLACEMENT OF SERVICE INDOOR P.C. BOARD

[Requirement when replacing the service indoor P.C. board assembly]

In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P.C. board before replace­ment, the type and capacity code exclusive to the corresponding model have been stored at shipment from the
factory and the important setup data such as system/indoor/group address set in (AUT O/MANUAL) mode or
setting of high ceiling selection have been stored at installation time . Replace the service indoor P.C. board
assembly according to the following procedure.

After replacement, check the indoor unit address and also the cycle by a test run.

<REPLACEMENT PROCEDURE>

CASE 1

Before replacement, power of the indoor unit can be turned on and the setup data can be readout
from the wired remote controller.

Read EEPROM data *1

ò

Replace service P.C. board & power ON *2

ò

Write the read data to EEPROM *3

ò

P ower reset (All indoor units in the group when group operation)

CASE 2

Before replacement the setup data can not be readout from the wired remote controller.

Replace service P.C. board & power ON *2

ò

Write the data such as high ceiling setup to EEPROM (According to the customers’ information) *3

ò

P ower reset (All indoor units in the group when group operation)

– 71 –

H1 Readout of the setup data from EEPROM

(Data in EEPROM contents, which have been changed at the local site, are read out together with data in EEPROM
set at shipment from the factory.)

1. Push

SET

, CL, and

(Corresponded with No. in Remote controller)
When group operation, the master indoor unit address is displayed at the first time. In this time, the item code

 is displayed. The fan of the selected indoor unit operates and the louver starts swinging if any.

(DN)

2. Every pushing

Specify the indoor unit No. to be replaced.

3. Using the set temperature

4. First change the item code (DN) from  to .

(Setting of filter sign lighting time) Make a note of the set data displayed in this time.

5. Next change the item code (DN) using the set temperature

6. Repeat item 5. and make a note of the important set data as shown in the later table (Ex.).

 to .. are provided in the item code (DN). On the way of operation, DN No. may come out.

•

7. After finishing making a note, push

(Approx. 1 minute is required to start handling of the remote controller.)

Minimum requirements for item code

TEST

buttons of the remote controller at the same time for 4 seconds or more. 1

UNIT LOUVER

button, the indoor unit address in the group are displayed successively. 2

/ buttons, the item code (DN) can be moved up and down one by one. 3

/ buttons. Also make a note of the set data.

TEST

button to return the status to usual stop status. 6

DN

10
11
12
13
14

Contents

Type
Indoor unit capacity
Line address
Indoor address
Group address

1) Type and capacity of the indoor unit is necessar y to set the revolutions
frequency of the fan.

2) If Line/Indoor/Group addresses differ from those before replacement, the
mode enters in automatic address setup mode and a manual resetting
may be required.

Notes)

When
replacement

MCC-1402-07

CN34

CN112

CN111

CN110

Set Short-circuit-plug on the same
position as the P. C. board to replace.

If short-circuit-plug is inserted in
CN34 of the P. C. board to replace,
re-use it in service P. C. board.

H2 Replacement of service P.C. board

1. Replace the P.C. board with a service P.C. board.
In this time, setting of jumper line (cut) or setting of (short-circuit) connecting connectors on the former P.C. board

should be reflected on the service P.C. board.

2. According to the system configuration, turn on power of the indoor unit with any method in the following items.
a) In case of single (individual) operation

Turn on the power supply.

1) Wait for completion of automatic address setup mode (Required time: Approx. 5 minutes) and then
proceed to H3.
(Line address = 1, Indoor address = 1, Group address = 0 (Individual) are automatically set.)

SET

2) Push
(

1 operation), interrupt the automatic address setup mode, and then proceed to H3.

, CL, and

(Unit No.

b) In case of group operation

Turn on power of the indoor unit of which P.C. board has been replaced with the service P.C. board with any
method in the following items.

1) Turn on power of the replaced indoor unit only.
(However, the remote controller is also connected. Otherwise H3 operation cannot be performed.)
Same as 1) and 2) in item a).

2) Tur n on power of the multiple indoor units including replaced indoor unit.

• Only 1 system for twin, triple, double twin

• For all units in the group

Wait for completion of automatic address setup mode (Required time: Approx. 5 minutes) and then proceed to
H3.

∗ The master unit of a group may change by setup of automatic address. The line address/indoor address of the

replaced indoor unit are automatically set to the vacant addresses except addresses belonging to other indoor
units which have not been replaced. It is recommended to make a note that the refrigerant line which includes the
corresponding indoor unit and that the corresponding indoor unit is master or sub in the group control.

TEST

buttons of the remote controller at the same time for 4 seconds or more

is displayed.)

– 72 –

r3 Writing of the setup contents to EEPROM

SET

T

TEST

RESET

CL

FA

N

SA

S

X

E

ON / OFF

UNIT

LOUVER

(The contents of EEPROM installed on the service P.C. board have been set up at shipment from the factory.)

1. Push

SET

, CL, and

(Corresponded with No. in Remote controller )
In group operation control, the master indoor unit No . is displayed at the first time. (If the automatic address

setup mode is interrupted in item 2. - a) - 2) in the previous page, the unit No. is displayed.)
In this time, the item code (DN) 10 is displayed. The fan of the selected indoor unit operates and the louver
starts swinging if any.

2. Every pushing
Specify the indoor unit No. of which P.C. board has been replaced with a service P.C. board.
(When the unit No. ALL is displayed, this operation cannot be performed.)

3. Using the set temperature / buttons, the item code (DN) can be moved up and down one by one . 3

4. First set a type and capacity of the indoor unit.
(Setting the type and capacity writes the data at shipment from the factory in EEPROM.)

1) Set the item code (DN) to 10. (As it is)

2) Using the timer time / buttons, set up a type. 4

(For example, 4-way air discharge cassette type is 0001) Refer to the attached table.

3) Push

SET

4) Using the set temperature / buttons, set 11 to the item code (DN).

5) Using the timer time / buttons, set the capacity.

(For example, 0012 for class 80) Refer to the attached table.

6) Push

7) Push

SET

TEST

(Approx. 1 minute is required to start handling of the remote controller.)

5. Next write the contents which have been set up at the local site such as the address setup in EEPROM.
Repeat the above procedure 1. and 2.

6. Using the set temperature / buttons, set 01 to the item code (DN).
(Setup of lighting time of filter sign)

7. The contents of the displayed setup data in this time should be agreed with the contents in the previous
memorandum in r1.

1) If data disagree, change the displayed setup data to that in the previous memorandum by the timer time

/ buttons, and then push

2) There is nothing to do when data agrees.

8. Using the set temperature / buttons, change the item code (DN).
As same as the above , check the contents of the setup data and then change them to data contents in the

previous memorandum.

9. Then repeat the procedure 7. and 8.

10. After completion of setup, push

the status to the usual stop status. 6

(Approx. 1 minute is required to start handling of
the remote controller.)

* 01 to 9F are provided in the item code (DN).

On the way of operation, DN No. may come out.
When data has been changed by mistake and

SET

, button has been pushed, the data can be

returned to the data before change by pushing

CL

button if the item code (DN) was not yet

changed.

TEST

buttons of the remote controller at the same time for 4 seconds or more. 1

UNIT LOUVER

button, the indoor unit numbers in the group control are displayed successively. 2

button. (OK when the display goes on.) 5

button. (OK when the display goes on.)

button to return the status to usual stop status. 6

SET

button. (OK when the display goes on.)

TEST

button to return

3
4

6

<Remote controller>

TIMER SE

TER

MOD

VE

WING/FI

5

1

2

– 73 –

Memorandum for setup contents (Item code table (Example))

DN

Filter sign lighting time

01

Dirty state of filter

02

Central control address

03

Heating suction temp shift

06

Cooling only

0F

Type

10

Indoor unit capacity

11

Line address

12

Indoor unit address

13

Group address

14

Flap type (Adjustment of air direction)

19

Temp difference of automatic cooling/

1E

heating selecting control points
Automatic reset of power failure

28

Option

2A

Thermo output selection

2b

Item

Memo At shipment

According to type
0000: Standard
0099: Unfixed
0002: +2°C (Floor type: 0)
0000: Shared for cooling/heating
According to model type
According to capacity type
0099: Unfixed
0099: Unfixed
0099: Unfixed
According to type

0003: 3 deg (Ts ± 1.5)

0000: None
0002:
0000: Thermo ON

Option

2E

Sensor selection

32

High ceiling selection

5d

Timer set (Wired remote controller)

60

Correction of high heat feeling

8b

Type
Item code [10]

Setup data

0014

Compact 4-way cassette

Type

* Initial setup value of EEPROM installed on the service P.C. board

Indoor unit capacity
Item code [11]

0000:
0000: Body sensor
0000: Standard
0000: Available
0000: None

Abbreviated name

RAV-SM✻✻✻MUT-E

Setup data

0006

0007
0009

Compact 4-way cassette

Type

* Initial setup value of EEPROM installed on the service P.C. board

– 74 –

Abbreviated name

RAV-SM402MUT-E
RAV-SM452MUT-E
RAV-SM562MUT-E

11. SETUP AT LOCAL SITE AND OTHERS

11-1. Indoor Unit

11-1-1. Test Run Setup on Remote Controller
<Wired remote controller>

1. When pushing
Then push

•“TEST” is displayed on LC display during operation of Test Run.

• During Test Run, temperature cannot be adjusted but air volume can be selected.

• In heating and cooling operation, a command to fix the Test Run frequency is output.

• Detection of error is performed as usual. However, do not use this function except case of Test Run be-

cause it applies load on the unit.

2. Use either heating or cooling operation mode for [TEST].
NOTE : The outdoor unit does not operate after power has been turned on or for approx. 3 minutes after

3. After a Test Run has finished, push
(To prevent a continuous test run operation, 60-minutes timer release function is provided to this remote
controller.)

TEST

button on the remote controller for 4 seconds or more, “TEST” is display ed on LC display.

ON / OFF

button.

operation has stopped.

TEST

button again and check that [TEST] on LC display has gone off.

<Wireless remote controller>

1. Remove a screw which fixes the serial olate of the receiver part on the wireless remote controller.
Remove the nameplate of the reciver section by inserting a minus screwdriver, etc. into the notch at the

bottom of the plate, and set the Dip switch to [TEST RUN ON].

2. Execute a test operation with button on the wireless remote controller.

• , and LED flash during test operation.

• Under status of [TEST RUN ON], the temperature adjustment from the wireless remote controller is invalid.
Do not use this method in the operation other than test operation because the equipment is damaged.

3. Use either [COOL] or [HEAT] operation mode for test operation.

• The outdoor unit does not operate appro x. 3 minutes after power-ON and operation stop.

4. After the test operation finished, stop the air conditioner from the wireless remote controller, and return Dip
switch of the sensor section as bef ore. (A 60 minutes timer clearing function is attached to the sensor
section in order to prev ent a continuous test operation.)

Receiver unit

M4 × 25 screw
(2 pieces)

Spacer

Small screw

Notch

Nameplate

– 75 –

<In case of wireless remote controller>

Procedure

1

2

3

4
5

6

Description

Turn on power of the air conditioner.

The operation is not accepted for 5 minutes when power has been turned on at first time after installation,
and 1 minute when power has been turned on at the next time and after.

After the specified time has passed, perform a test operation.

Push [Start/Stop] button and change the operation mode to [COOL] or [HEAT] with [Mode] button.
Then change the fan speed to [High] using [Fan] button.

Test cooling operation Test heating operation

Set temperature to [18°C] using [Temperature set] Set temperature to [30°C] using [Temperature set]
button. button.

After checking the receiving sound “Pi”, immediately After checking the receiving sound “Pi”, immediately
push [Temperature set] button to set to [19°C] push [Temperature set] button to set to [29°C].

After checking the receiving sound “Pi”, immediately After checking the receiving sound “Pi”, immediately
push [Temperature set] button to set to [18°C]. push [Temperature set] button to set to [30°C].

Then repeat the procedure 4 → 5 → 4 → 5 .
After approx. 10 seconds, all the display lamps on the sensor part of wireless remote controller,

[Operation] (Green), [Timer] (Green), and [Ready] (Yellow) flash and the air conditioner starts operation.
If the lamps do not flash, repeat the procedure

and after.

2

7

<Outline of test operation from the wireless remote controller>

Test cooling operation:

Start → 18°C → 19°C → 18°C → 19°C → 18°C → 19°C → 18°C → (Test operation) → Stop

Test heating operation:

Start → 30°C → 29°C → 30°C → 29°C → 30°C → 29°C → 30°C → (Test operation) → Stop

After the test operation, push [Start/Stop] button to stop the operation.

Be sure to set the
air speed to [High]

2

3, 4, 5, 6
2, 7

– 76 –

Item No. (DN) table (Selection of function)

DN

01

Filter sign lighting time

02

Dirty state of filter

03

Central control address

06

Heating suction temp shift

0F

Cooling only

10

Type

11

Indoor unit capacity

12

Line address

13

Indoor unit address

Item

Description

0000 :None
0002 :2500H (4-Way/Duct/Ceiling Type)

0000 :Standard
0001 :High degree of dir t (Half of standard time)

0001 :No.1 unit to 0064 : No.64 unit
0099 :Unfixed

0000 :No shift 0001 : +1°C
0002 :+2°C to 0010 : -10°C

(Up to recommendation + 6)

0000 :Heat pump
0001 :Cooling only (No display of [AUTO] [HEAT])

0014 : SM562MUT-E

0000 :Unfixed 0009 : 562 type
0012 : 802 type 0015 : 1102 type
0017 : 1402 type

0001 :No.1 unit to 0030 : No.30 unit

0001 :No.1 unit to 0064 : No.64 unit

At shipment

0002 for D.I. and S.D.I.
models

0000 :Standard

0099 :Unfixed

0002 :+2°C
(Floor type 0000: 0°C)

0000 :Shared for

cooling/heating

According to model type

According to capacity type

0099 :Unfixed

0099 :Unfixed

14

Group address

19

1E

Temp difference of
automatic cooling/heating
mode selection COOL
→ HEAT, HEAT → COOL

28

Automatic restart of power
failure

2A

Option

2b

Thermo output selection

)

(T10



2E

Option

30

Option

31

Option

32

Sensor selection

33

Temperature indication

0000 :Individual 0001 : Master of group
0002 :Sub of group

0000 :0 deg to 0010 : 10 deg
(For setup temperature, reversal of
COOL/HEAT by ± (Data value)/2)

0000 :None 0001 : Restart

0000 :Indoor thermo ON
0001 :Output of outdoor comp-ON receiving

0000 :Body TA sensor 0001 : Remote controller sensor

0000 :°C (celsius) 0001 : °F (Fahrenheit)

0099 :Unfixed

0003 :3 deg

(Ts±1.5)

0000 :None

0002 :Default

0000: Thermo . ON

0000 :Default

0000 :Default

0000 :Default

0000 :Body sensor

0000 :°C

40

Option

5d

High ceiling selection
(Air volume selection)

60

Timer set
(Wired remote controller)

8b

Correction of high heat
feeling

0000 :Standard (Below 3.2m)
0001 :Standard (Below 3.4m)
0003 :Standard (Below 3.5m)

0000 :Available (Operable)
0001 :Unavailable (Operation prohibited)

0000 :None 0001 : Correction

– 77 –

0003 :Default

0000 :Standard

0000 :Available

0000 : None

11-1-2. Wiring and Setting of Remote Controller Control

2-remote controller control
(Controlled by 2 remote controllers)

This control is to operate 1 or multiple indoor units
are operated by 2 remote controllers.
(Max. 2 remote controllers are connectable.)

• When connected 2 remote controllers

operate an indoor unit

Remote controller

switch (Master)

Sold

separately

BABA

BA

Indoor unit

3

21

21 3

Outdoor unit

Remote controller

switch (Sub)

Sold

separately

Remote controller
cables (Procured locally)

Terminal block for
remote controller cables

<Wired remote controller>

How to set wired remote controller as sub
remote controller

Change DIP switch inside of the rear side of the
remote controller switch from remote controller
master to sub. (In case of RBC-AMT32E)

Remote controller (Inside of the rear side)

Sub remote

controller

Master remote

controller

12

1 2

1 2

DIP switch

<Wireless remote controller>

How to set wireless remote controller to sub
remote controller

• When connected 2 remote controllers

operate the twin

Remote controller

switch (Master)

Sold

separately

BABA

Terminal block for
remote controller cables

BA

Indoor unit 1

3

21

21 3

Outdoor unit

Remote controller
inter-unit wire
(Procured locally)

Remote controller

switch (Sub)

Sold

separately

B

A

Indoor unit 2

21 3

Inter-unit wiring
between indoor units
(Procured locally)

(Setup method)

One or multiple indoor units are controlled by
2 remote controllers.
(Max. 2 remote controllers are connectable.)

[Remote controller
Sub/Master]
DIP SW

[Operation]

1. The operation contents can be changed by Last­push-priority.

2. Use a timer on either Master remote controller or
Sub remote controller.

– 78 –

11-1-3. Monitor Function of Remote Controller Switch

SET

T

ST

T

CL

SA

S

X

E

ON / OFF

UNIT

LOUVER

n Calling of sensor temperature display
<Contents>

Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor
mode from the remote controller.

<Procedure>

1 Push

TEST

+ CL buttons simultaneously for 4 seconds to

call the service monitor mode.

The service monitor goes on, the master indoor unit No. is
displayed at first and then the temperature of item code 00 is
displayed.

ò

2

Push temperature set
the item code of data to be monitored.

The item code list is shown below.

Item code

Indoor unit

data

00
01
02
03
04

Room temp. (control temp.) ∗1
Room temp. (remote controller)
Room temp. (TA)
Heat exchanger temp. (TCJ)
Heat exchanger temp. (TC)

buttons and then change

Data name

Outdoor unit

data

TIMER SE

TER

TE

RESE

WING/FI

241 3

<Operation procedure>

1 2 3 4

Returned to usual display

Item code

60
61
62
63
64
65

Heat exchanger temp. TE
Outside temp. TO
Discharge temp. TD
Suction temp. TS

Heat sink temp. THS

Data name

—

MOD

VE

∗1 Only master unit in group control

ò

3 Push

4

UNIT LOUVER

button to select the indoor unit to be monitored.

Each data of the indoor unit and its outdoor units can be monitored.

ò

Pushing

TEST

button returns the status to the usual display.

∗1 The indoor discharge temperature of item code [F8] is the estimated value from TC or TCJ sensor.

Use this value to check discharge temperature at test run.
(A discharge temperature sensor is not provided to this model.)

• The data value of each item is not the real time, but value delayed b y a few seconds to ten-odd
seconds.

• If the combined outdoor unit is one before 2 or 3 series, the outdoor unit data [6D], [70], [72] and [73]
are not displayed.

– 79 –

n Calling of error history

SET

T

ST

T

CL

SA

S

X

E

ON / OFF

UNIT

LOUVER

<Contents>

The error contents in the past can be called.

<Procedure>

SET

1 Push

TEST

+

buttons simultaneously for

4 seconds or more to call the service check mode.

Service Check goes on, the item code 01 is displayed, and
then the content of the latest alarm is displayed. The number
and error contents of the indoor unit in which an error occurred
are displayed.

2 In order to monitor another error history, push the set

temperature
history No. (Item code).

Item code 01 (Latest) → Item code 04 (Old)
NOTE : 4 error histories are stored in memory .

3 Pushing

TEST

REQUIREMENT

/ buttons to change the error

button returns the display to usual display.

TIMER SE

TER

TE

RESE

231

<Operation procedure>

1 2 3

MOD

VE

WING/FI

Do not push CL button, otherwise all the error histories of the indoor
unit are deleted.

Returned to usual display

(Group control operation)

In a group control, operation of maximum 8 indoor units can be controlled by a remote controller.
The indoor unit connected with outdoor unit (Individual/Master of twin) controls room temperature according to

setting on the remote controller.

<System example>

OUT

IN

1-1

Remote controller

OUT

IN

Master
2-1

OUT

IN

3-1

OUT

IN

4-1

OUT

IN

7-1

Max. 8 units

1. Display range on remote controller
The setup range (Operation mode/Air volume select/Setup temp) of the indoor unit which was set to the

master unit is reflected on the remote controller.

2. Address setup
Turn on power of the indoor unit to be controlled in a group within 3 minutes after setting of automatic

address.
If power of the indoor unit is not turned on within 3 minutes (completion of automatic address setting), the

system is rebooted and the automatic address setting will be judged again.

1) Connect 3 In/Out cables surely.

2) Check line address/indoor address/group address of the unit one by one .

3) The unit No. (line/indoor gout address) which have been set once keep the present status as a rule if the

unit No. is not duplicated with one of another unit.

– 80 –

n Indoor unit power-ON sequence

Power ON

<Automatic
address judgment>

Gr construction check

System start

<Initial communication>

<By feed unit>

Not normal NO

Normal
∗ Gr normal

1) There is no duplicated indoor unit address.

2) There is no invalid indoor unit address.

3) Individual unit and master/follower units
are not intermingled.

4) Only a unit for individual.

5) A master indoor unit and 1 or more
follower indoor units for Gr.

• The unit without power feed waits entirely
→ Waiting status is released by system start

• Reboot when power is fed on the way

3 minutes elapse

YES

Automatic address starts.

(Approx. 1 minute up to finish)

Outdoor model distinction (10 seconds) (Indoor unit)
Twin Master/follower distinction (Indoor unit)
Gr construction, louver information (Remote controller)

Remote controller operation is available.

(Approx. 50 seconds after power-ON)

<Cautions at test run>

• Power supply/Indoor/Outdoor serial and Gr wiring: OK

• Powers of all indoor units are turned on within 3 minutes.

• Reception time for remote controller operation
(After power supply was turned on)

1) When address is OK : Approx. 50 seconds

2) In AUTO address : Approx. 4 to 5 minutes

<Usual regular
communication>

Regular communication between indoor units (Every 30 seconds) (Master/Follower)
Regular communication on the identical pipe (every 30 seconds) (Twin Master/Follower)

(When the above status changes, immediately communicates.)

(Repetition)

• In a group operation, if the indoor unit which was f ed power after judgment of automatic address cannot

receive regular communication from the master unit and regular communication on identical pipe within
120 seconds after power was turned on, it reboots (system reset).

→ The operation starts from judgment of automatic address (Gr construction check) again.

(If the address of the master unit was determined in the previous time, the power fed to the master unit and
reboot works, the master unit may change though the indoor unit line address is not changed.)

– 81 –

11-2. Setup at Local Site / Others

Model name: TCB-PCNT30TLE2 and TCB-PX30MUE

11-2-1. TCC-LINK Adapter (For TCC-LINK Central Control)

1. Function

This model is an optional P.C. board to connect the indoor unit to TCC-LINK (Central controller).

2. Microprocessor Block Diagram

Indoor unit

CN050

Indoor control

P.C. board

CN041

Terminal block
(A, B)

Remote controller

TCC-LINK adapter P.C. board

CN51

TCC-LINK

communication circuit

CN40

Terminal

resistance

SW01

MCC-1440

Communication units:
Total 64 units

Communication distance:
2km

Central

controller

TCC-LINK

3. Installation Procedure

1) Cut off the slit of bell mouth on the Air Conditioner unit (RAV-SM✻✻✻MUT-E) with nipper or a cutter for

attaching the Connection Interface Kit.

Cutting off portion

(Shaded area)

After cutting off the slit of bell mouth on the unit,
clear up the surface of the slit that there is no burr
on the cutting edge.

2) Attach the Connection Interface Kit (TCB-PX30MUE) on the

Air Conditioner unit (RAV-SM✻✻✻MUT-E).
After insert the hook of the unit to the Connection Interface

Kit hole, and then tighten a Cross slot screw (4 × 14).

Connection Interface Kit

– 82 –

Cross slot screw

3) Install the spacers and P.C. board that are attached to TCB-PCNT30TLE2, on the Connection Interface Kit.

Spacers
(Attached to the TCB-PCNT30TLE2)

P.C. board
(Attached to the TCB-PCNT30TLE2)

4) Remove the 2P terminal block for the communication cable of the electric parts box on the unit, and then

replace with the attached 4P terminal block for the communication wires.
a) Disconnect the lead wires on the 2P terminal block of the electric parts box from the Faston connector

on the unit.
b) Replace the 2P connector with 4P connector on the terminal block.
c) Connect the lead wires that are disconnected as sho wn above steps a), to the 4P terminal block.

(A), (B) terminals
(Connecting for the Remote Controller)

CN41

(BLUE)

(BLUE)

5) Connect the connection cables attached to the electric parts block.

(U3), (U4) terminals
(For central control)

CN50

(WHITE)

CN51

CN41

(BLUE)

Connecting cable B Connecting cable A Wiring diagram

CN41

3

1

3

1

Main P.C. B

MCC-1402

3

4 5

21

3 4 521
3 4 521

3 4 521

Sub P.C. B
MCC-1440

CN41

CN50
(WHITE)

CN51

Terminal

A

CN40

B

U3U

4

– 83 –

6) Setting for Central Control
For Central Control setting, refer to the Installation Manual of the TCB-PCNT30TLE2.

7) After the installation work has been completed, install the Connection Interface Kit cover to the Connec­tion Interface Kit tightened with the two screws (4 ×10).

Screw (4 ×10)

Connection
Interface Kit cover

Hook of
Connection Interface Kit

Screw (4 ×10)

4. TCC-LINK Wiring Connection

CAUTION

1) When controlling customized setup collectively, TCC-LINK adapter (This option) is required.

2) In case of group operation or twin/triple operation, the adapter is necessary to be connected to the main unit.

3) Connect the central control devices to the central control system wiring.

4) When controlling collectively customized setup only, turn on only Bit 1 of SW01 of the least line of the system
address No. (OFF when shipped from the factory)

∗ In case of customized setup, the address is necessary to be set up again from the wired remote

controller after automatic addressing.

Central control device

U1

U2

U3

U4

Refrigerant line 1

Outdoor unit

Caution 3

Indoor unit

TCC-LINK adapter

This product

( )

sold separately

U3

Central control device

123

123

U4

A

1

Caution

Remote controller

U1

U2

U3

U4

B

* However group sub units and twin/triple sub units of customized setup are not included in n umber of the units .

Central control devices: Max. 10 units

Refrigerant line 2

12

Maater
unit

123

U4 123

U3

A

B

2

Caution

Remote controller Remote controller Remote controller

Group operation (Max. 8 units) Twin/T riple operation (Example of triple)

[If mixed with multi model (Link wiring), multi indoor units are included.]

Refrigerant line 3

3

Remote controller
wiring

Indoor units in all refrigerant lines: Max. 64 units

12

A

Sub
unit

B

Refrigerant line 4

3

12

3

Indoor/outdoor inter-unit wire (AC230V serial)

Central control system wiring

Sub unit Sub unit

123

A B

U3

U4

123

A B

* Wiring for No .1 and 2 only

Maater unit

123

A B

– 84 –

5. Wiring Specifications

• Use 2-core with no polar wire.

• Match the length of wire to wire length of the central

control system.

No. of wires

2

Up to 1000m: twisted wire 1.25mm

Up to 2000m: twisted wire 2.0mm
If mixed in the system, the wire length is
lengthened with all indoor/outdoor inter-unit wire length at side.

• To prevent noise trouble, use 2-core shield wire.

• Connect the shield wire by closed-end connection and apply open process (insulating process) to the last
terminal. Ground the earth wire to 1 point at indoor unit side. (In case of central controlling of digital inverter
unit setup)

Size

CAUTION

1) Closed-end connection of shield wire (Connect all the connecting parts of each indoor unit)

2) Apply open process to the last terminal (insulating process).

Central control device

U2

U1

Outdoor unit

Indoor unit

U3

Caution 2

U4 123

3) Ground earth wire to 1 point at indoor unit side.

123

123

B

A

Caution 1

12

3123123

Master
unit

U3

U4 123

B

A

Central control system wiring

Sub unit

B

A

Caution 3

: TCC-LINK adapter
(This option)

Sub unit Sub unit

123

A B

U3

U4

Master unit

123

A B

2

2

123

A B

Remote controller

Remote controller Remote controller Remote controller

(Group operation) (Triple operation)

Earth terminal

6. P.C. Board Switch (SW01) Setup

When performing collective control by customized setup only, the setup of terminator is necessary.

• Using SW01, set up the terminator.

• Set up the terminator to only the adapter connected to the indoor unit of least line address No.

Central control device

U1

U2

U3

U4

Outdoor unit

Indoor unit

TCC-LINK adapter

This product

( )

sold separately

Central control device

U1

U2

U3

U4

Refrigerant line 1

123

123

U3

U4 123

A

B

Remote controller

Central control devices: Max. 10 units

Refrigerant line 2

U3

U4 123

Remote controller Remote controller Remote controller Remote controller

12

A

3

Master
unit

B

Refrigerant line 3

3

12

Sub
unit

B

A

Remote controller wiring

Refrigerant line 4

12

123

A B

3

Indoor/outdoor inter-unit wire (AC230V serial)

Sub unit Sub unit

Central control system wiring

123

U3 U4

A B

* Wiring for No.1 and 2 only

Master unit

123

A B

Line address

SW01 Bit 1
SW01 Bit 2

Remarks

Turn SW01 Bit 1 to ON.

1

ON

OFF

(Reference) Setup contents of switch

SW01

Bit 1
OFF

ON

OFF

ON

Bit 1
OFF
OFF

ON
ON

Group operation (Max. 8 units) T win/Triple operation (Example of triple)

2

OF

OFF

As status shipped from factory

Terminator

None
100Ω

75Ω
43Ω

As status shipped from factory

OFF

Remarks

Mixed with multi (Link wiring) at shipment from factory
Central control by digital inverter only
Spare
Spare

– 85 –

OF

4

(OFF at shipment from factory)
(OFF at shipment from factory)

7. External view of P.C. board assembly

SET

T

ST

T

CL

SA

S

X

E

ON / OFF

UNIT

LOUVER

Terminator (SW01)

52

85

8. Address setup

In addition to set up the central control address, it is necessary to change the indoor unit number.
(Line/Indoor/Group address). For details, refer to TCC-LINK Adapter Installation Manual.

11-3. How to Set up Central Control Address Number

When connecting the indoor unit to the central control remote controller using TCC-LINK adapter, it is neces­sary to set up the central control address number.

• The central control address number is displayed as the line No. of the central control remote controller.

1. Setup from remote controller at indoor unit side

∗ If you use the network adapter P.C. board, it is effective only when No. 7 of setup switch SW01 on P.C.

board is turned off.

<Procedure> Perform setup while the unit stops.

VENT

1 Push

TEST

+

buttons for 4 seconds or more.

When group control is executed, first the unit No. is displayed and all the indoor units in the group
control are selected. In this time, fans of all the selected indoor units are turned on. (Fig. 1)
(Keep displayed status without pushing

UNIT LOUVER

button.)

In case of individual remote controller which is not group-controlled, Line address and Indoor unit address
are displayed.

2 Using temperature setup
3 Using timer time

buttons, select the setup data.

buttons, specify item code 03.

The setup data is shown in the table below (Table 1).

4 Push

SET

button. (OK if display goes on.)

(TFig. 1)

• To change the item to be set up, return to Procedure 2.

5 Push

TEST

button.

The status returns to usual stop status.

(Table 1)

Setup data

0001
0002
0003

:

0064
0099

Central control address No.

1
2
3

:

64

Unset (Setup at shipment from factory)

2
1

5

RESE

TIMER SE

TER

TE

WING/FI

MOD

VE

3
1

4

– 86 –

12. ADDRESS SETUP

12-1. Address Setup Procedure

When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor
unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address
setup completes with power-ON of the outdoor unit. The operation of the remote controller is not accepted while
automatic address works. (Approx. 4 to 5 min utes)

Setup of line address of outdoor unit,
indoor unit address, and group address

Completion of cabling work

Do you arbitrarily set the

indoor unit address?

YES

Connect one remote controller with
one indoor unit (1 : 1) tentatively with
communication cable.

Turn on power of outdoor unit.

Set to all indoor units one by one.

(MANUAL)

NO

NO

Is group control performed?

YES

Do you change setting after

automatic setting at the first time?

YES

Turn on power of outdoor unit.

After completion of address
setup, change is to arbitral

( )

address/group manually.

NO

(To AUTO address mode)

Setup of automatic
address finishes within

( )

4 to 5 minutes.

Is refrigerant line 1 line?

Turn on power of outdoor unit.

YES

END

• When the following addresses are not stored in the neutral memory (IC503) on the indoor P.C. board, a test
run operation cannot be performed. (Unfixed data at shipment from factory)

Line address

Indoor unit address

Group address

Item code

12

13

14

Data at shipment

0099

0099

0099

Setup data range

0001 (No. 1 unit) to 0064 (No. 64 unit)
0001 (No. 1 unit) to 0064 (No. 64 unit)

Max. value of indoor units in the identical refrigerant line
0000 : Individual (Indoor units which are not controlled in a group)

0001 : Master unit (1 indoor unit in group control)
0002 : Sub unit (Indoor units other than master unit in group control)

– 87 –

12-2. Address Setup & Group Control

<Terminology>

Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64)
Group address : 0 = Single (Not group control)

1 = Master unit in group control
2 = Sub unit in group control

Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/from

the remote controllers and sub indoor units.
(* It has no relation with an indoor unit which communicates serially with the outdoor units.)

The operation mode and setup temperature range are display ed on the remote controller LCD.
(Except air direction adjustment of louver)

Sub unit (= 2) : Indoor units other than master unit in group operation

Basically, sub units do not send/receive signals to/from the remote controllers.
(Except errors and response to demand of service data)

Header unit (Representative unit) (Master Twin)

: This unit communicates with the indoor unit (follower) which serial-communicates with the

outdoor units and sends/receives signal (Command from compressor) to/from the outdoor
units as the representative of the cycle control in the indoor units of the identical line address
within the minimum unit which configures one of the refrigerating cycles of Twin.

Follow er unit (Subordinate unit) (Sub Twin)

: Indoor units excluding the header unit in Twin

This unit communicates with (Header) indoor unit in the identical line address and performs
control synchronized with (Header) indoor unit.

This unit does not perform the signal send/receive operation with the outdoor units. :
No judgment for serial signal error.

12-2-1. System Configuration

1. Single

Outdoor

Indoor

3. Triple

1-1

Master/Header

1-1

Individual

Remote controller

Sub/Follower

(Master/Header)

1-2

1-3

Sub/Follower

2. Twin

1-1

Master/Header

1-2

Sub/Follower

– 88 –

4. Single group operation

• Each indoor unit controls the outdoor unit individually.

2-1

Sub/Header

1-1

Sub/Header

4-1

Master/Header

3-1

Sub/Header

8-1

Sub/Header

5. Multiple groups operation (Manual address setting)

2-1

Sub/Header

1-1

Sub/Header

1-2

Sub/Follower

3-1

Master/Header

3-2

Sub/Follower

3-3

Sub/Follower

• Header unit: The header unit receives the indoor unit data (thermo status) of the follower (Without identical

line address & indoor/outdoor serial) and then finally controls the outdoor compressor match­ing with its own thermo status.
The header unit sends this command information to the follower unit.

• Follow er unit: The follow er unit receiv es the indoor unit data from the header (With identical line address &

indoor/outdoor serial) and then performs the thermo operation synchronized with the header unit.
The follower unit sends own thermo ON/OFF demand to the header unit.

(Example)

No. 1-1 header unit sends/receives signal to/from No . 1-2 and No. 1-3 follower units.
(It is not influenced by the line 2 or 3 address indoor unit.)

– 89 –

12-2-2. Automatic Address Example from Unset Address (No miswiring)

1. Standard (One outdoor unit)

1) Single 2) Twin 3) Triple

(1-1) (1-2)

1-2

Sub/Header

Master/Follower

1-1

Individual

(Master/Header)

(1-1)

1-2

Master/Header

(1-2)

1-1

Sub/Follower

Only turning on source power supply (Automatic completion)

2. Group operation

(Multiple outdoor units = Multiple indoor units with serial communication only, without twin)

2-1

Sub/Header

1-1

Sub/Header

3-1

Master/Header

8-1

Sub/Header

1-3

(Max. : 8 units)

(1-3)

1-1

Sub/Follower

Only turning on source power supply (Automatic completion)

3. Multiple groups oper ation

Single Twin Triple

2-1

Sub/Header

2-1

Sub/Header

1-1

2-3

Master/Follower

3-1

Sub/Header

3-3

Sub/Follower

1-2

Sub/Follower

Change is necessary

Manually change addresses of the multiple follower units

simultaneously from the remote controller.

1-1 1-2 3-1 3-2 3-3

– 90 –

12-3. Address Setup (Manual Setting from Remote Controller)

In case that addresses of the indoor units will be
determined prior to piping work after cabling w ork

• Set an indoor unit per a remote controller.

• Turn on power supply.

Line address → 1

Indoor unit address → 1

Group address → 1

1 Push

SET

+ CL +

TEST

buttons simultaneously

for 4 seconds or more.

←←

2 (

← Line address)

←←

Using the temperature setup

12 to the item code.

set

/ buttons,

3 Using timer time / buttons, set the line address.
4 Push

SET

button. (OK when display goes on.)

(Example of 2-lines cabling)
(Real line: Cabling, Broken line: Refrigerant pipe)

Outdoor

1 23

1 2 3

Indoor

A B

A B

Remote controller

For the above example, perform setting by
connecting singly the wired remote controller
without remote controller inter-unit cable.

Group address
Individual : 0000
Master unit : 0001
Sub unit : 0002

1 2 3

Indoor

A B

1
2
2

Outdoor

1 2 3

1 2 3

Indoor

A B

2
1
2

In case of group control

1 2 3

Indoor

A B

2
2
2

←←

5 (

← Indoor unit address)

←←

Using the temperature setup

/ buttons, set 13 to the item code .

6 Using timer time / buttons, set 1 to the line address.
7 Push
8 (

SET

button. (OK when display goes on.)

←←

← Group address)

←←

Using the temperature setup

/ buttons, set 14 to the item code .

9 Using timer time / buttons, set 0000 to Individual, 0001 to Master unit, and 0002 to sub unit.
10 Push
11 Push

SET

button. (OK when display goes on.)

TEST

button.

Setup completes. (The status returns to the usual stop status.)

2, 5, 8

END

11

FILTER
RESET

TEMP.

TEST

TIMER SET

TIME

SET

CL

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

3, 6, 9
4, 7, 10

1

<Operation procedure>

1 2 3 4 5 6 7 8 9 10 11

– 91 –

END

1 2

END

Operation

<Operation procedure>

2

1

SET

TIME

TIMER SET

TEST

FILTER
RESET

TEMP.

CL

FAN

SAVE

SWING/FIX

VENT

MODE

ON / OFF

UNIT LOUVER

1 2 3

END

<Operation procedure>

3

1

2

SET

TIME

TIMER SET

TEST

FILTER
RESET

TEMP.

CL

FAN

SAVE

SWING/FIX

VENT

MODE

ON / OFF

UNIT LOUVER

12-4. Confirmation of Indoor Unit No. Position

1. To know the indoor unit addresses though position of the indoor unit body is recognized

• In case of individual operation (Wired remote controller : indoor unit = 1 : 1)
(Follow to the procedure during operation)

<Procedure>

1 Push
2 Push

Unit No. 1-1 is displayed on LCD.
(It disappears after seve ral seconds.)
The displayed unit No. indicate line address and

indoor unit address.
(When other indoor units are connected to the

identical remote controller (Group control unit), other
unit numbers are also display ed every pushing

UNIT LOUVER

ON / OFF

UNIT LOUVER

button.

button if the unit stops.

button.

2. To know the position of indoor unit body by address

• To confirm the unit No. in the group control
(Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.)

<Procedure>

The indoor unit numbers in the group control are
successively displayed, and fan, louver, and drain pump
of the corresponding indoor unit are turned on.
(Follow to the procedure during operation)

1 Push

VENT

and

TEST

buttons simultaneously for

4 seconds or more.

• Unit No. is displayed.

• Fans and louvers of all the indoor units in the
group control operate.

2 Every pushing

UNIT LOUVER

button, the unit numbers

in the group control are successivel y displayed.

• The unit No. displayed at the first time indicates the
master unit address.

• F an and louver of the selected indoor unit only
operate.

3 Push

TEST

button to finish the procedure.

All the indoor units in the group control stop.

– 92 –

13. DETACHMENTS

13-1. Indoor Unit

Ceiling panel: RBC-UM11PG(W)E
Preparing work:

1. Before work, be sure to stop the power supply of the air conditioner and turn off switch of the power supply
breaker. (Otherwise an electric shock may be caused.)

2. Be sure to put on the gloves when working; otherwise an injury may be caused with parts sharp edges etc.

No.

Part name

1

Suction grille

1. Detachment

1) Slide hooks (2 positions) of the suction grille
to inner side, and then hang down the
suction grille.

2) Take off the strap that connects the panel
and the suction grille, and then lift up shaft of
the suction grille to remove the suction grille.

Procedure

Hook of suction grille

Hook hole of ceiling panel

Hook of
fall-preventive strap

Remarks

Ceiling panelSuction grille

2

Electric parts
cover

2. Attachment

1) Hook shaft of the suction grille to the panel.

2) Hook strap of the suction grille to the original position of the panel.

3) Close the suction grille and slide the hooks outward to fix it.

1. Detachment

1) Perform work of procedure 1 -1.

2) Take off screws (Ø4 × 10, 3 pcs.) fixing the
electric parts cover.

3) Remove the electric parts cover from the
temporary hanging hook of the electric par ts
cover, and then open the cover.

Screws Temporary hanging hook

2. Attachment

1) Close the electr ic parts cover and hook the
cover hole to the temporary hanging hook.

2) Tighten the fixing screws. (Ø4 × 10, 3 pcs.)

Unnecessary to remove this hook.

Screw

– 93 –

No.

3

Part name

Adjust
corner cover

Procedure

1. Detachment

1) Perform work of procedure of 1 -1.

2) Turn clockwise screws (4 positions) at the
suction port cor ner until adjust corner
cover rises up.

NOTE)

When you work, keep the torque at below 12N•m.
Do not use an electric screwdriver; otherwise the
mechanism of adjust corner cover may be
damaged and not be removed.

3) Pull downward the risen-up part of adjust
corner cover and remove it.

4) Remove the strap of adjust corner cover.

2. Attachment

1) Attach the strap of adjust cor ner cover to
the panel, hook claws of adjust corner
cover to the panel corner, and then push
the opposite side into the panel.

2) Turn screws (4 positions) of the suction
port cor ner counterclockwise until bump
between adjust corner cover and panel
disappears.

Remarks

1

Torque~12N·m

2

2

1

4

Ceiling
panel

NOTE)

When you work, keep the torque at below 12N•m.
Do not use an electric screwdriver;
otherwise the mechanism of adjust corner cover
may be damaged and not be removed.

1. Detachment

1) Perform works of procedure 1 -1-, 2 -1,

2) Remove the flap connector (CN33, White,

3

-1.

and

5P) connected to the control P.C. board
and then take off the lead wire from the
clamp.

NOTE)

Remove the connectors after unlocking the lock
of the housing.

3) Take off screws (M5, 4 pcs.) fixing the
ceiling panel.

4) Push the temporar y bracket to inner side
to remove the ceiling panel.

2. Attachment

1) Hook the panel to the temporar y bracket of
the drain pan of the main body.

Torque~12N·m

Hanging
section of tentative
hook of ceiling panel

Push to remove

Ceiling panel

3

Temporary
bracket

Drain piping
corner

Temporary
bracket

NOTE)

The panel has directionality. Therefore mount the
panel according to the temporary bracket and the
bracket mounting position.

2) Tighten the fixing screws. (M5, 4 pcs.)

3) Connect flap connector of the ceiling
panel to the connector
(CN33, White, 5P) of the control
P.C. board.

Cable clamp

– 94 –

Washer
based screw

Hanging section
of temporary bracket

CN33

No.5Part name

Procedure

Remarks

Control P.C.
board

1. Detachment

1) Perform works of procedure 1 -1- and 2 -1.

2) Remove the connectors connected from the control P.C. board to other parts.
CN33 : Flap motor (5P, White)
CN34 : Float switch (3P, Red)
CN41 : Terminal block of remote controller (3P, Blue)
CN40 : Terminal block of crossover between inside and outside (5P, Black)
CN68 : Drain pump (3P, Blue)
CN67 : Terminal block of power supply (3P, Black)
CN101: TC sensor (2P, Black)
CN102: TCJ sensor (2P, Red)
CN104: Room temp sensor (2P, Yellow)
CN333: Fan motor power supply (5P, White)
CN334: Fan motor position detection (5P, White)

NOTE)

Remove the connectors after
unlocking the lock of the housing.

Ferrite core for sensor lead

3) Unlock the lock of the card
edge spacer (6 positions)
and then remove the
control P.C. board.

Card edge spacerCard edge spacer

Drawing-out port of lead wire

Ferrite core for fan motor

2. Attachment

1) Fix the control P. C. board to the card edge spacer. (6 positions)

2) Connect the connectors as or iginal before being removed in item 1.

NOTE)

For drawing of each wire and position of ferrite core, perform wiring same as those before remov­ing. If there is incomplete drawing of wire, short or water leakage of the par ts may be caused.

Fix the sensor lead wires with cord clamps (2 positions) so that
it does not slacken at P.C. board side and draw wires as shown in the figure.

Cord clamp Tighten together the shield wires of the

Adhere on the
transformer.

<Details of sensor lead wire drawing>

As shown in the figure,
hook the sensor lead wires
to claw of the piping cover
and then pass them so that
they are stored in the groove.

After mounting the piping
cover, check each lead wire
does not hit the liquid pipe.

sensor lead wires and the remote controller.
Be careful that other sensor does not fall out.

Cord clamp

Turn up the sensor lead wires
and fix surely with the cord clamp.

Arrow view E

Please note the
float SW lead wires are
set at inner side of the
fan motor lead wires.

E

Cord clamp
Turn up the fan motor lead wires

and fix surely with the cord clamp.
(There should be no catching of
lead wire by P.C. board.)

Clamp (yellow, gray, black) lead wires
of the fan motor and arrange them
as shown in the figure.

<Details of piping cover assembly and mounting>

– 95 –

<Details of fan motor lead wire drawing>

No.6Part name

Procedure

Remarks

Electric
parts box

1. Detachment

1) Perform works of procedure 1 -1-and 2 -1.

2) Remove connectors of the lead wire connected to the following connectors of the control
P.C. board.

CN33 : Flap motor (5P, White)
CN34 : Float switch (3P, Red)
CN68 : Drain pump (3P, Blue)
CN101: TC2 sensor (2P, Black)
CN102: TCJ sensor (2P, Red)
CN333: Fan motor power supply (5P, White)
CN334: Fan motor position detection (5P, White)

NOTE)

Remove the connectors after unlocking the lock of the housing.

3) Remove each lead wire
from cord clamps in the

Ferrite core for sensor lead

electric parts box.

4) Remove the power supply
wiring, remote controller
wiring, and crossover wiring.

5) Take off screws
(Ø4 × 10, 2 pcs.)

Card edge spacerCard edge spacer

Drawing-out port of lead wire

Ferrite core for fan motor

2. Attachment

1) Tighten screws (Ø4 × 10, 2 pcs.) fixing the electric parts box.

2) Connect the connectors as or iginal before being removed in item 1.

3) Perform power supply wiring, remote controller wiring, and crossover wiring between inside
and outside.

NOTE)

For drawing of each wire and position of ferrite core, perform wiring same as those before remov­ing. If there is incomplete drawing of wire, short or water leakage of the par ts may be caused.

Fix the sensor lead wires with cord clamps (2 positions) so that
it does not slacken at P.C. board side and draw wires as shown in the figure.

Cord clamp Tighten together the shield wires of the

Adhere on the
transformer.

<Details of sensor lead wire drawing>

sensor lead wires and the remote controller.
Be careful that other sensor does not fall out.

Cord clamp

Turn up the sensor lead wires
and fix surely with the cord clamp.

Arrow view E

Please note the
float SW lead wires are
set at inner side of the
fan motor lead wires.

As shown in the figure,
hook the sensor lead wires
to claw of the piping cover
and then pass them so that
they are stored in the groove.

After mounting the piping
cover, check each lead wire
does not hit the liquid pipe.

<Details of piping cover assembly and mounting>

– 96 –

E

Cord clamp
Turn up the fan motor lead wires

and fix surely with the cord clamp.
(There should be no catching of
lead wire by P.C. board.)

Clamp (yellow, gray, black) lead wires
of the fan motor and arrange them
as shown in the figure.

<Details of fan motor lead wire drawing>

No.

7

8

Part name

Bell mouth

Turbo fan

Procedure

1. Detachment

1) Perform work of procedure 1 -1.

2) Take off the lead wires of the drain pump, float
switch, and fan motor from the bell mouth.

3) Take off fixing screws of the bell mouth.
(Ø4 × 10, 4 pcs.)

2. Attachment

1) Mount the bell mouth with screws.
(Ø4 × 10, 4 pcs.)

2) Perform wiring as original before being
removed.

NOTE)

Pinch lead wire of the drain pump and float switch
with lead wire fixing claws of the bell mouth and
perform wiring along the guide.

1. Detachment

1) Perform work of procedure 7 -1.

2) Take off the nut (M6 nut 1 pc.) of the turbo fan.

NOTE)

Use a box wrench for attachment and detachment of
the turbo fan. If using a monkey wrench etc, the
other parts may be damaged in work.

Remarks

Fixing claws
for lead wires Bell mouth

4 screws

Fan motor fixing
M6 nut

Fixing claws
for lead wires

Drawing-out port of
fan motor lead wire

2. Attachment

1) Insert the turbo fan into the fan motor so that
boss of the turbo fan matches with cut surface
of the fan motor, and then tighten it with nut.

NOTE)

Tightening torque of turbo fan: 5.9 ± 0.6N.m
Apply looseness-preventing agent to the nut after

tightening.

Turbo fan

– 97 –

Fan motor

Fan motor
earth wire

No.9Part name

Procedure

Remarks

Fan motor

1. Detachment

1) Perform work of procedure 8.

2) Take off screws fixed with lead holding bracket
of the fan motor. (Ø4 × 10, 2 pcs.)

3) Open wir ing holding part of the fan motor lead
holding bracket and then take off the fan motor
lead wire from the bracket.

4) Take off fixing nuts for the fan motor to remove
the fan motor.(M 3 pcs.)

NOTE)

Use a box wrench for attachment and detachment of
the fan motor fixing nuts; otherwise contact or
damage for other parts may be caused.

2. Attachment

1) Mount the fan motor with the fixing nuts.

NOTE)

Tightening torque of turbo fan: 5.9 ± 0.6N.m
Apply looseness-preventing agent (as paints) to the

nut after tightening.

Fixing nut for fan motor

Fan motor

Fan motor

earth wire

earth wire

Fixing screw

Fan motor

Fan motor

Holding metal fitting
for fan motor lead wire

2) Attach the fan motor lead wire holder.

NOTE)

• For the fan motor lead wire, fix the lead wire
holding bracket along concave par t of the ceiling
panel. (There is no catch-in of lead wire and ceiling
panel.)

• When fixing the lead wire bracket, tighten fan
motor earth together with the lead wire.

• For this work, do not use an electric screwdriver.

• Take note the damage of earth terminal.

3) Bend the lead wire holding part and fix the fan
motor lead wire.

NOTE)

Be sure that the lead wire does not come to contact
with the heat exchanger.

Wiring holding bracket

– 98 –

Fan motor lead wire

Concave part
of ceiling panel

Piping holder r

Soc

et of dr

ain pan

ain pan

Hooking claw
for drain pump

Drain pump assembly

Drain hose

Fixing screw
for drain pump

Hose band

White marked position

No.

10

Part name

Drain pan

Procedure

1. Detachment

1) Perform works of procedure 4 -1 and 7 -1.

2) Remove the drain cap and extract drain water
accumulated in the drain pan.

Remarks

2 screws

NOTE)

When removing the drain cap, be sure to receive
drain water with a bucket, etc.

3) Take off screws fixing the drain pan to remove
the drain pan. (Ø4×10, 4 pcs.)

2. Attachment

1) Insert the drain cap into the drain pan.

NOTE)

Put a stick or others into hole at center of the drain
cap, and then insert the drain cap until it strikes on
the socket of the drain pan.

2) Draw each lead wire to the correct positions,
and then insert the drain pan into the main
unit.

NOTE)

Draw lead wires of the drain pump and the float
switch along the guide of the cabinet. Inser t the drain
pan along the guides of sensors (TC1, TC2, TCJ)
and PMV lead wire.

The drain pan and each lead wire are not caught in;
otherwise water leakage may be caused.

3) Fix the drain pan with screws. (Ø4 × 10, 4 pcs.)

Soc

ket of dr

Socket of drain pan

Piping holder r

Piping holder Lead wire

ain pan

2 screws

ibPiping holder rib

Drain pan

DrDrain pan

Drain pump

11

assembly

1. Detachment

1) Perform work of procedure 10 -1.

2) Pick up the hose band and slide it from the
pump connecting part to remove the drain
hose.

3) Take off screws (Ø4 × 10, 3 pcs.) fixing the
drain pump assembly, and then move hooking
claw (1 position) of the main body from the
drain pump assembly to remove the drain
pump assembly.

2. Attachment

1) Fix the drain pump assembly as original.

NOTE)

For fixing, use a hooking claw (1 position) and
screws (3 positions).

When screwing, be sure not to run on the hooking
claw at main body side.

2) Mount the drain hose and the hose band as
original.

NOTE)

Insert the drain hose up to the end of pump connect­ing part, and then put the band at white marked
position of the hose.

Hose band

Hose band

Drain hose

Drain hose

Drain pump assembly

Drain pump assembly

White marked position

White marked position

– 99 –

Fixing screw

Fixing screw

for drain pump

for drain pump

Hooking claw

Hooking claw

for drain pump

for drain pump

No.12Part name

Procedure

Remarks

Heat
exchanger

1. Detachment

1) Recover refrigerant gas.

2) Remove the refrigerant pipe at indoor unit
side.

3) Perform work of procedure 10 -1.

4) Take off screws (Ø4 × 10, 3 pcs.) fixing the
piping cover to remove the piping cover.

5) While holding the heat exchanger, remove
fixing band and fixing screws (Ø4 × 10, 3 pcs.)
and then remove the heat exchanger.

2. Attachment

1) Mount parts in order, heat exchanger

→ fixing band → piping cover → drain pan
→ bell mouth → electric par ts box as original.

NOTE)

Arrange wires as original.

2) Attach the removed connectors and wires as
original.

3) Connect the refr igerant pipe as original, and
then perform vacuuming.

Piping coverPiping cover

3 screws

<Details of sensor lead wire drawing>

TCJ sensor
(Black)

TC sensor
(Red)

Wind pipe cover over the header,
attach a sensor on it.
(Do not set the head of tie wrap upward.)

Fixing band Fixing band for

2 fixing screws for heat exchanger

heat exchanger

– 100 –