Sanyo SPW-C253GH5 Service manual

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Sanyo SPW-C253GH5 Service manual | Manualzz

SERVICE MANUAL

FILE NO.

SPW-U253GH56 ⁄ SPW-C253GH5

SPW-U253GH56 ⁄ SPW-C253GH8

SPW-U363GH56 ⁄ SPW-C363GH8

SPW-U483GH56 ⁄ SPW-C483GH8

SPLIT SYSTEM AIR CONDITIONER

INDOOR MODEL No.

SPW-U253GH56

SPW-U253GH56

SPW-U363GH56

SPW-U483GH56

PRODUCT CODE No.

854 011 53

854 011 53

854 011 54

854 011 55

OUTDOOR MODEL No.

SPW-C253GH5

SPW-C253GH8

SPW-C363GH8

SPW-C483GH8

PRODUCT CODE No.

854 012 18

854 012 19

854 012 20

854 012 21

Indoor Unit Outdoor Unit

SPW-U253GH56

0408_C_S

SPW-C253GH5

SPW-C253GH8

Section

1

4

5

2

3

SPW-U363GH56

SPW-U483GH56

85464849135001

0409_C_S

SPW-C363GH8

SPW-C483GH8

REFERENCE NO.

SM

830035

Please Read Before Starting

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

For safe installation and trouble-free operation,you must:

Carefully read this instruction booklet before beginning.

Follow each installation or repair step exactly as shown.

Observe all local, state, and national electrical codes.

Pay close attention to all warning and caution notices given in this manual.

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

CAUTION

This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

When Wiring

……………………………………………………………………

ELECTRICAL SHOCK CAN CAUSE

SEVERE PERSONAL INJURY OR DEATH.

ONLY A QUALIFIED, EXPERIENCED

ELECTRICIAN SHOULD ATTEMPT TO

WIRE THIS SYSTEM.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or

death.

Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

When Installing

……………………………………………………………………

…In a Room

Properly insulate any tubing run inside a room to prevent

“sweating” that can cause dripping and water damage to walls and floors.

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

…In an area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

…In a Snowy Area

(for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

• Execute enough ventilation in case refrigerant gas leaks during operations. Be careful not to contact the refrigerant gas with the flame. It will cause the generation of poisonous gas.

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

• Check carefully for leaks before starting the test run.

NOTE

Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion, the refrigerant tubing for your particular model is specified as either “narrow” or “wide” rather than as “liquid” or “gas”.

When Servicing

……………………………………………………………………

• Turn the power OFF at the main power box before opening the unit to check or repair electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site when finished servicing. Don’t forget to check that no metal scraps or bits of wiring have been left inside the unit.

SM830035

WHO SHOULD USE THIS MANUAL

This service manual is made to assist the service technician apply his knowledge and training to this model air conditioner. This manual is written both for experienced service

persons and those who are new to air conditioning service. To help those with less experience or who are new to this kind of unit we have included more explanations of basic procedures in simple language than is usual in some service manuals. The experi-

enced technician will of course find he knows many of these things already and can go directly to the procedures and information he needs; the less experienced technician will better understand what to do even before he arrives on the job, and therefore be better able to work by himself as well as assist the more experienced technician.

TABLE OF CONTENTS

1. SPECIFICATIONS ....................................................................................................... 7

1-1 Unit Specifications .............................................................................................. 8

1-2 Major Component Specifications ...................................................................... 12

(A) Indoor Unit .................................................................................................... 12

(B) Outdoor Unit ................................................................................................ 15

1-3 Other Component Specifications ...................................................................... 18

1-4 Dimensional Data ................................................................................................ 20

(A) Indoor Unit ..................................................................................................... 20

(B) Outdoor Unit .................................................................................................. 22

1-5 Refrigerant Flow Diagram ................................................................................... 24

1-6 Operating Range ................................................................................................. 25

2. PROCESSES AND FUNCTIONS ...........................................................................27

2-1 Room Temperature Control ................................................................................28

(A) Cooling .......................................................................................................... 28

(B) Heating .......................................................................................................... 29

2-2 Cold Draft Prevention (Heating Cycle) ................................................................30

2-3 Automatic Fan Speed (Indoor Unit).....................................................................31

(A) Cooling .......................................................................................................... 31

(B) Heating .......................................................................................................... 31

2-4 Outdoor Fan Speed Control ................................................................................32

(A) Cooling .......................................................................................................... 32

(B) Heating .......................................................................................................... 32

2-5 Freeze Prevention (Cooling) ...............................................................................33

2-6 Condensing Temperature Control (Cooling) ...................................................... 34

2-7 Overload Protection (Heating).............................................................................35

2-8 Discharge Temperature Control (Cooling and Heating) ..................................... 36

2-9 Auto. Mode for Automatic Heating/Cooling Switching ........................................ 36

SM830035

– 3 –

2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating).............................. 38

2-11 4-Way Valve, Solenoid Control ...........................................................................39

(A) Normal Control Mode .................................................................................... 39

(B) AUTO Control Mode ...................................................................................... 40

2-12 Automatic Restart after Power Interruption ........................................................ 40

2-13 Electronic Refrigerant Control Valve ...................................................................41

2-14 Compressor Discharge Gas Temperature ......................................................... 41

(A) Cooling .......................................................................................................... 41

(B) Heating (Except During Defrosting) ...............................................................41

2-15 Compressor Current Detection Circuit ................................................................42

2-16 Dehumidifying Operation .................................................................................... 43

2-17 Drain Pump Control ............................................................................................ 44

2-18 Electronic Refrigerant Control Valve Control ..................................................... 45

2-19 Voltage Detection Control ................................................................................... 46

3. ELECTRICAL DATA .................................................................................................. 47

3-1 Indoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................... 48

3-2 Outdoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................. 52

4. SERVICE PROCEDURES ........................................................................................... 61

4-1 Troubleshooting .................................................................................................. 62

4-2 Checking the Electrical Components ..................................................................95

5. INSTRUCTION MANUAL ......................................................................................... 109

– 4 –

SM830035

Introduction: Read Me First!

WHAT IS IN THIS MANUAL

This manual will help you understand and service the air conditioner. To help you find the information you need, we have divided it into 5 main sections. Each section is divided into chapters with charts, tables and explanations to help you find and repair problems.

Section 1: Specifications, tells you about the physical and electrical make up of the unit, as well as its heating and cooling capacities. Look in this section to find the correct values for components and functions.

Section 2: Processes and Functions, explains each different part of the cooling and heating cycle, and how each control function reacts to changing conditions to keep the room at the set temperature range.

Section 3: Electrical Data, which has fold-out schematic and wiring diagrams so you can find the parts you need to check when something is wrong, and see how they should be connected.

Section 4: Service Procedures, has two main parts, a diagnostic chapter to help you find the specific component to replace or adjust, and a chapter with specific procedures and values to guide you in checking the electrical components in the unit.

Section 5: Instruction Manual, is the same manual the user will have, and it contains general information about how to set and use the features of this particular air conditioner.

Knowing this information will help you tell the owner how to use and care for this air conditioner, and also help you install and set the unit correctly.

HOW TO USE THIS MANUAL

You can use this manual both as a reference to find specific information about the capacity, functions and construction of this unit, and as a source of information to help you set up and maintain the unit.

When this unit is not working properly, and the cause is not known, you can use the procedures in

Section 3: Servicing Procedures to find the problem, fix it, and restore the unit to its proper functioning.

This air conditioner has many helpful self diagnostic features to help you identify problem areas quickly.

So you will be ready when a problem happens, we suggest you look this manual over and become familiar with it by following these steps:

1.

Look at the TABLE OF CONTENTS to get an idea of what is in this manual and where to find it.

2.

Look at the chapter about TROUBLE SHOOTING, so you are familiar with the way the flow charts work. They are designed to guide you quickly through the possible causes for each kind of problem that is likely to happen to the Unit. Particularly read the introduction to this section, and the parts about the self-diagnosis and error codes which show on the display.

3.

Look at the chapter about CHECKING ELECTRICAL COMPONENTS. You already know about most of these procedures. This chapter gives you the specific values and methods for these components. If you don’t know some of these procedures, you can easily learn them here.

4.

Read the Instruction Manual! The Instruction Manual is included here because it helps you help the user to set the temperature controls properly and know how to take care of any simple problems that may happen, as well as know when to call for service. The Instruction

Manual also has illustrations, care, and installation information not found in the rest of the service manual. It is short, and if you read it carefully, you will be able to answer the customers questions easily, and also know the most efficient ways for setting times and temperatures.

Please use this manual to make your work easier, keep the air conditioner functioning well, and keep your customers satisfied.

SM830035

– 5 –

– 6 –

SM830035

1. SPECIFICATIONS

1-1 Unit Specifications ......................................................................................... 8

1-2 Major Component Specifications .................................................................. 12

(A) Indoor Unit ................................................................................................12

(B) Outdoor Unit ........................................................................................... 15

1-3 Other Component Specifications ................................................................. 18

1-4 Dimensional Data ...........................................................................................20

(A) Indoor Unit ................................................................................................20

(B) Outdoor Unit .............................................................................................22

1-5 Refrigerant Flow Diagram ............................................................................. 24

1-6 Operating Range ............................................................................................ 25

1

– 7 –

SM830035

1. Specifications

1-1 Unit Specifications

1

MODEL No.

POWER SOURCE

PERFORMANCE

Capacity

Indoor Unit

Outdoor Unit

Air circulation (Hi/Me/Lo)

Moisture removal(High)

External static pressure(High)

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running amperes*

Max. running amperes**

Power input

Power factor

C.O.P

Max. starting amperes

FEATURES

Controls / Thermostat control

Timer

Fan speeds Indoor/Outdoor

Airflow direction (Indoor)

Air filter

Remote controller (Option)

Refrigerant control

Drain pump (drain connection)

Compressor

Operation sound Indoor - Hi/Me/Lo

Outdoor - Hi

REFRIGERANT TUBING

Limit of tubing length

Limit of tubing length at shipment

Limit of elevation difference

between the two units

Refrigerant tube

outer diameter

Narrow tube

Wide tube

Refrigerant amount at shipment

DIMENSIONS & WEIGHT

Unit dimensions Height

Width

Package dimensions

Depth

Height

Width

Depth

Net weight

Shipping weight

Shipping volume kW

BTU / h m3 / h

Liters/h mmAq(Pa)

V

V

220

A 15.1

A 17.2

kW 3.2

% 96.3

W / W 2.28

A 69

SPW-U253GH56

SPW-C253GH5

220 - 230 - 240 V / 1 Phase / 50 Hz

Cooling Heating

7.3

25,000

8

27,000

1,260/1,080/780

3.2

-

5(49) : at shipment, 10(98) : using the booster cable

230

198 - 264

15.4

17.3

3.26

92

2.24

72

240

15.5

17.3

3.31

89

2.21

75

220

15.3

16.6

3.22

95.7

2.48

69

230

198 - 264

15.4

16.5

3.28

92.6

2.44

72

240 dB - A dB - A

Microprocessor / I.C. thermostat

ON / OFF 72-hours

3 and Automatic control/ 2 (Auto)

-

Field supply

Wired:RCS-SH80TG

Electronic Refrigerant Control Valve

Max. head 25cm above drain connection (25A,OD32mm)

Rotary

36 / 31 / 26, (41 / 38 / 35 : using the booster cable)

52 m (ft.) m (ft.) m (ft.)

50 (164)

30 (98)

Outdoor unit is higher than indoor unit: 50 (164)

Outdoor unit is lower than indoor unit: 30 (98) mm (in) mm (in) kg mm (in) mm (in) mm (in)

Indoor unit

310 (12-7/32)

1,050 (41-11/32)

665 (26-6/32) mm (in) 380 (14-31/32) mm (in) mm (in)

1,249 (49-6/32)

866 (34-3/32) kg (lb) 41 (90) kg (lb) 50 (110) m

3

(Cu. ft.) 0.411 (14.5)

6.35 (1 / 4)

15.88 (5 / 8)

R22 - 3.0

Outdoor unit

735 (28-30/32)

940 (37)

340 (13-12/32)

826 (32-17/32)

1,016 (40)

416 (16-12/32)

71 (157)

77 (170)

0.349 (12.3)

15.6

16.4

3.33

88.9

2.4

75

DATA SUBJECT TO CHANGE WITHOUT NOTICE

Cooling :

Rating conditions(*) : Indoor air temperature 27

°

C DB / 19

°

C WB, Outdoor air temperature 35

°

C DB

Full load conditions(**) Indoor air temperature 35

°

C DB / 25

°

C WB, Outdoor air temperature 45

°

C DB

Heating :

Rating conditions(*) : Indoor air temperature 20

°

C DB, Outdoor air temperature 7

°

C DB / 6

°

C DB

Full load conditions(**) Indoor air temperature 24

°

C DB, Outdoor air temperature 24

°

C DB / 15.5

°

C WB

SM830035

– 8 –

1-1 Unit Specifications

MODEL No.

POWER SOURCE

PERFORMANCE

Capacity

Indoor Unit

Outdoor Unit

Air circulation (Hi/Me/Lo)

Moisture removal(High)

External static pressure(High)

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running amperes*

Max. running amperes**

Power input

Power factor

C.O.P

Max. starting amperes

FEATURES

Controls / Thermostat control

Timer

Fan speeds Indoor/Outdoor

Airflow direction (Indoor)

Air filter

Remote controller (Option)

Refrigerant control

Drain pump (drain connection)

Compressor

Operation sound Indoor - Hi/Me/Lo

Outdoor - Hi

REFRIGERANT TUBING

Limit of tubing length

Limit of tubing length at shipment

Limit of elevation difference

between the two units

Refrigerant tube

outer diameter

Narrow tube

Wide tube

Refrigerant amount at shipment

DIMENSIONS & WEIGHT

Unit dimensions Height

Width

Package dimensions

Depth

Height

Width

Depth

Net weight

Shipping weight

Shipping volume kW

BTU / h m3 / h

Liters/h mmAq(Pa)

V

V

A

A

380

4.9

5.5

kW 2.81

% 87.1

W / W

A

2.6

27

SPW-U253GH56

SPW-C253GH8

380 - 400 - 415 V / 3N / 50 Hz

Cooling Heating

7.3

25,000

8

27,000

1,260/1,080/780

3.2

-

5(49) : at shipment, 10(98) : using the booster cable

400

342 - 456

4.7

5.3

2.84

87.2

2.57

29

415

4.6

5.1

2.87

86.8

2.54

30

380

5.1

5.9

2.92

87

2.74

27

400

342 - 456

4.9

5.7

2.94

86.6

2.72

29

415 dB - A dB - A

Microprocessor / I.C. thermostat

ON / OFF 72-hours

3 and Automatic control/ 2 (Auto)

-

Field supply

Wired:RCS-SH80TG

Electronic Refrigerant Control Valve

Max. head 25cm above drain connection (25A,OD32mm)

Rotary

36 / 31 / 26, (41 / 38 / 35 : using the booster cable)

52 m (ft.) m (ft.) m (ft.)

50 (164)

30 (98)

Outdoor unit is higher than indoor unit: 50 (164)

Outdoor unit is lower than indoor unit: 30 (98) mm (in) mm (in) kg mm (in) mm (in) mm (in)

Indoor unit

310 (12-7/32)

1,050 (41-11/32)

665 (26-6/32) mm (in) 380 (14-31/32) mm (in) mm (in)

1,249 (49-6/32)

866 (34-3/32) kg (lb) 41 (90) kg (lb) 50 (110) m

3

(Cu. ft.) 0.411 (14.5)

6.35 (1 / 4)

15.88 (5 / 8)

R22 - 3.0

Outdoor unit

735 (28-30/32)

940 (37)

340 (13-12/32)

826 (32-17/32)

1,016 (40)

416 (16-12/32)

71 (157)

77 (170)

0.349 (12.3)

4.9

5.4

2.98

84.6

2.68

30

DATA SUBJECT TO CHANGE WITHOUT NOTICE

Cooling :

Rating conditions(*) : Indoor air temperature 27

°

C DB / 19

°

C WB, Outdoor air temperature 35

°

C DB

Full load conditions(**) Indoor air temperature 35

°

C DB / 25

°

C WB, Outdoor air temperature 45

°

C DB

Heating :

Rating conditions(*) : Indoor air temperature 20

°

C DB, Outdoor air temperature 7

°

C DB / 6

°

C DB

Full load conditions(**) Indoor air temperature 24

°

C DB, Outdoor air temperature 24

°

C DB / 15.5

°

C WB

SM830035

– 9 –

1. Specifications

1-1 Unit Specifications

1

MODEL No.

POWER SOURCE

PERFORMANCE

Capacity

Indoor Unit

Outdoor Unit

Air circulation (Hi/Me/Lo)

Moisture removal(High)

External static pressure(High)

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running amperes*

Max. running amperes**

Power input

Power factor

C.O.P

Max. starting amperes

FEATURES

Controls / Thermostat control

Timer

Fan speeds Indoor/Outdoor

Airflow direction (Indoor)

Air filter

Remote controller (Option)

Refrigerant control

Drain pump (drain connection)

Compressor

Operation sound Indoor - Hi/Me/Lo

Outdoor - Hi

REFRIGERANT TUBING

Limit of tubing length

Limit of tubing length at shipment

Limit of elevation difference

between the two units

Refrigerant tube

outer diameter

Narrow tube

Wide tube

Refrigerant amount at shipment

DIMENSIONS & WEIGHT

Unit dimensions Height

Width

Package dimensions

Depth

Height

Width

Depth

Net weight

Shipping weight

Shipping volume kW

BTU / h m3 / h

Liters/h mmAq(Pa)

V

V

A

A

380

5.5

6.5

kW 3.17

% 87.6

W / W 3.34

A 31

SPW-U363GH56

SPW-C363GH8

380 - 400 - 415 V / 3N / 50 Hz

Cooling Heating

10.6

36,000

11.4

39,000

1,920/1,440/1,200

3.9

-

7(69) : at shipment, 12(118) : using the booster cable

400

342 - 456

5.3

6.3

3.2

87.1

3.31

33

415

5.2

6.2

3.24

86.7

3.27

35

380

5.6

6.3

3.27

88.7

3.49

31

400

342 - 456

5.4

6.2

3.31

88.5

3.44

33

415 dB - A dB - A

Microprocessor / I.C. thermostat

ON / OFF 72-hours

3 and Automatic control/ 2 (Auto)

-

Field supply

Wired:RCS-SH80TG

Electronic Refrigerant Control Valve

Max. head 25cm above drain connection (25A,OD32mm)

Rotary

42 / 36 / 30, (46 / 42 / 38 : using the booster cable)

53 m (ft.) m (ft.) m (ft.)

50 (164)

30 (98)

Outdoor unit is higher than indoor unit: 50 (164)

Outdoor unit is lower than indoor unit: 30 (98) mm (in) mm (in) kg mm (in) mm (in) mm (in)

Indoor unit

310 (12-7/32)

1,480 (58-9/32)

665 (26-6/32) mm (in) 380 (14-31/32) mm (in) mm (in)

1,679 (66-3/32)

866 (34-3/32) kg (lb) 64 (141) kg (lb) 71 (157) m

3

(Cu. ft.) 0.553 (19.5)

9.52 ( 3 / 8 )

19.05 ( 3 / 4 )

R22 - 3.5

Outdoor unit

1,235 (48-20/32)

940 (37)

340 (13-12/32)

1,326 (52-7/32)

1,016 (40)

416 (16-12/32)

94 (207)

101 (223)

0.56 (19.8)

5.3

6.2

3.37

88.5

3.38

35

DATA SUBJECT TO CHANGE WITHOUT NOTICE

Cooling :

Rating conditions(*) : Indoor air temperature 27

°

C DB / 19

°

C WB, Outdoor air temperature 35

°

C DB

Full load conditions(**) Indoor air temperature 35

°

C DB / 25

°

C WB, Outdoor air temperature 45

°

C DB

Heating :

Rating conditions(*) : Indoor air temperature 20

°

C DB, Outdoor air temperature 7

°

C DB / 6

°

C DB

Full load conditions(**) Indoor air temperature 24

°

C DB, Outdoor air temperature 24

°

C DB / 15.5

°

C WB

SM830035

– 10 –

1-1 Unit Specifications

MODEL No.

POWER SOURCE

PERFORMANCE

Capacity

Indoor Unit

Outdoor Unit

Air circulation (Hi/Me/Lo)

Moisture removal(High)

External static pressure(High)

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running amperes*

Max. running amperes**

Power input

Power factor

C.O.P

Max. starting amperes

FEATURES

Controls / Thermostat control

Timer

Fan speeds Indoor/Outdoor

Airflow direction (Indoor)

Air filter

Remote controller (Option)

Refrigerant control

Drain pump (drain connection)

Compressor

Operation sound Indoor - Hi/Me/Lo

Outdoor - Hi

REFRIGERANT TUBING

Limit of tubing length

Limit of tubing length at shipment

Limit of elevation difference

between the two units

Refrigerant tube

outer diameter

Narrow tube

Wide tube

Refrigerant amount at shipment

DIMENSIONS & WEIGHT

Unit dimensions Height

Width

Package dimensions

Depth

Height

Width

Depth

Net weight

Shipping weight

Shipping volume kW

BTU / h m3 / h

Liters/h mmAq(Pa)

V

V

A

A

380

8.6

9.3

kW 4.95

% 87.5

W / W 2.83

A 71 dB - A dB - A

SPW-U483GH56

SPW-C483GH8

380 - 400 - 415 V / 3N / 50 Hz

Cooling Heating

14

47,800

16

54,600

1,920/1,440/1,200

6.8

-

7(69) : at shipment, 12(118) : using the booster cable

400

342 - 456

8.8

9.3

5.16

84.6

2.71

73

415

9

9.5

5.27

81.5

2.66

75

380

9.2

10

5.32

87.9

3.01

71

400

342 - 456

9.2

9.7

5.47

85.8

2.93

73

415

Microprocessor / I.C. thermostat

ON / OFF 72-hours

3 and Automatic control/ 2 (Auto)

-

Field supply

Wired:RCS-SH80TG

Electronic Refrigerant Control Valve

Max. head 25cm above drain connection (25A,OD32mm)

Scroll

42 / 36 / 30, (46 / 42 / 38 : using the booster cable)

55 m (ft.) m (ft.) m (ft.)

50 (164)

30 (98)

Outdoor unit is higher than indoor unit: 50 (164)

Outdoor unit is lower than indoor unit: 30 (98) mm (in) mm (in) kg mm (in) mm (in) mm (in)

Indoor unit

310 (12-7/32)

1,480 (58-9/32)

665 (26-6/32) mm (in) 380 (14-31/32) mm (in) mm (in)

1,679 (66-3/32)

866 (34-3/32) kg (lb) 64 (141) kg (lb) 71 (157) m

3

(Cu. ft.) 0.553 (19.5)

9.52 ( 3 / 8 )

19.05 ( 3 / 4 )

R22 - 4.5

Outdoor unit

1,235 (48-20/32)

940 (37)

340 (13-12/32)

1,326 (52-7/32)

1,016 (40)

416 (16-12/32)

108 (238)

115 (254)

0.56 (19.8)

9.5

9.4

5.58

81.7

2.87

75

DATA SUBJECT TO CHANGE WITHOUT NOTICE

Cooling :

Rating conditions(*) : Indoor air temperature 27

°

C DB / 19

°

C WB, Outdoor air temperature 35

°

C DB

Full load conditions(**) Indoor air temperature 35

°

C DB / 25

°

C WB, Outdoor air temperature 45

°

C DB

Heating :

Rating conditions(*) : Indoor air temperature 20

°

C DB, Outdoor air temperature 7

°

C DB / 6

°

C DB

Full load conditions(**) Indoor air temperature 24

°

C DB, Outdoor air temperature 24

°

C DB / 15.5

°

C WB

SM830035

– 11 –

1. Specifications

1

1-2 Major Component Specifications

(A) Indoor Unit

MODEL No.

Source

Remote Controller (Option)

Controller P.C.B. Ass’y

Fan (Number…diameter)

Fan Motor

Model…Nominal output

Source

No. of pole…r.p.m. (230 V, High)

Coil resistance

(Ambient temperature 20

°

C) mm

W

rpm.

SPW-U253GH56

220 - 230 - 240 V / 1 phase / 50 Hz

RCS - SH80TG (Microprocessor)

CR - X253GH (Microprocessor)

Centrifugal (2...ø190)

KFC4X - 101B5P...100 W

220 - 230 - 240 V / 1 phase / 50 Hz

4...1,021

BRN – WHT : 48.8

, ORG – YEL : 37.1

WHT – VLT : 10.3

, YEL – BLK : 90.0

VLT – ORG : 8.7

, ORG – PNK : 30.6

Safety device

Operating temperature Open

°

C

Close

°

C

VAC,

µ

F

130

±

5

°

C

Differential 15 deg. (min.)

440 V, 2.5

µ

F Run capacitor

Electronic refrigerant control valve

Solenoid control model

Coil resistance (at 20

°

C)

DKV - MOZS550E0

ORG – GRY : 46

RED – GRY : 46 ,

, YEL – GRY

BLK – GRY

IKV - 24D12

:

:

46

46

Solenoid control valve model

Heat exchanger

Coil

Rows…fin pitch

Face area

Drain pump

Raterd

Total head & capacity mm

m

2

V, W

Aluminum plate fin / Copper tube

3…1.7

0.202

WP20SL - 9

AC 230 V, 50 Hz, 14.7 W

400 mm, 600 cc/min

– 12 –

SM830035

1-2 Major Component Specifications

(A) Indoor Unit

MODEL No.

Source

Remote Controller (Option)

Controller P.C.B. Ass’y

Fan (Number…diameter)

Fan Motor

Model…Nominal output

Source

No. of pole…r.p.m. (230 V, High)

Coil resistance

(Ambient temperature 20

°

C) mm

W

rpm.

SPW-U363GH56

220 - 230 - 240 V / 1 phase / 50 Hz

RCS - SH80TG (Microprocessor)

CR - X253GH (Microprocessor)

Centrifugal (3...ø190)

KFG4X - 101B5PA...100 W / KFC4X - 161B5P...160 W

220 - 230 - 240 V / 1 phase / 50 Hz

4...1,191 / 4...1,182

BRN – WHT : 75.8

, BRN – WHT : 44.4

WHT – VLT : 18.6

, WHT – VLT : 9.6

VLT – ORG : 21.2

, VLT – ORG : 33.1

ORG – YEL : 44.3

, ORG – YEL : 32.0

YEL – BLK : 310.5

, YEL – BLK : 74.0

PNK – ORG : 42.1

, PNK – ORG : 35.7

Safety device

Operating temperature Open

°

C

Close

°

C

VAC,

µ

F

130

±

5

°

C

Differential 15 deg. (min.)

440 V, 3.5

µ

F / 440 V, 6.0

µ

F Run capacitor

Electronic refrigerant control valve

Solenoid control model

Coil resistance (at 20

°

C)

EKV - MOZS559E0

ORG – GRY : 46

RED – GRY : 46 ,

, YEL – GRY

BLK – GRY

HKV - 30D16

:

:

46

46

Solenoid control valve model

Heat exchanger

Coil

Rows…fin pitch

Face area

Drain pump

Raterd

Total head & capacity mm

m

2

V, W

Aluminum plate fin / Copper tube

4…1.7

0.310

WP20SL - 9

AC 230 V, 50 Hz, 14.7 W

400 mm, 600 cc/min

– 13 –

SM830035

1. Specifications

1

1-2 Major Component Specifications

(A) Indoor Unit

MODEL No.

Source

Remote Controller (Option)

Controller P.C.B. Ass’y

Fan (Number…diameter)

Fan Motor

Model…Nominal output

Source

No. of pole…r.p.m. (230 V, High)

Coil resistance

(Ambient temperature 20

°

C) mm

W

rpm.

SPW-U483GH56

220 - 230 - 240 V / 1 phase / 50 Hz

RCS - SH80TG (Microprocessor)

CR - X253GH (Microprocessor)

Centrifugal (3...ø190)

KFG4X - 101B5PA...100 W / KFC4X - 161B5P...160 W

220 - 230 - 240 V / 1 phase / 50 Hz

4...1,191 / 4...1,182

BRN – WHT : 75.8

, BRN – WHT : 44.4

WHT – VLT : 18.6

, WHT – VLT : 9.6

VLT – ORG : 21.2

, VLT – ORG : 33.1

ORG – YEL : 44.3

, ORG – YEL : 32.0

YEL – BLK : 310.5

, YEL – BLK : 74.0

PNK – ORG : 42.1

, ORG – PNK : 35.7

Safety device

Operating temperature Open

°

C

Close

°

C

VAC,

µ

F

130

±

5

°

C

Differential 15 deg. (min.)

440 V, 3.5

µ

F / 440 V, 6.0

µ

F Run capacitor

Electronic refrigerant control valve

Solenoid control model

Coil resistance (at 20

°

C)

EKV-MOZS559E0

ORG – GRY : 46

RED – GRY : 46 ,

, YEL – GRY

BLK – GRY

HKV - 30D16

:

:

46

46

Solenoid control valve model

Heat exchanger

Coil

Rows…fin pitch

Face area

Drain pump

Raterd

Total head & capacity mm

m

2

V, W

Aluminum plate fin / Copper tube

4…1.7

0.310

WP20SL - 9

AC 230 V, 50 Hz, 14.7 W

400 mm, 600 cc/min

– 14 –

SM830035

1-2 Major Component Specifications

(B) Outdoor Unit

Unit Model No.

Source

Controller P.C.B. Ass'y

Control circuit fuse

Compressor

Model ..... number

Source

Nominal output

Compressor oil

Coil resistance

(Ambient temperature 25

°

C)

Safety devices

Overload relay models

Operating temperature

W cc

Open

°

C

Close

°

C

Crank case heater

Refrigerant amount at shipment

High pressure switch

Set pressure kg

OFF kg/cm 2

ON kg/cm 2

Fan

Number...diameter

Fan speeds

Fan motor

Model

Source

No. of pole ..... rpm (230V, High / Med.)

Nominal output

Coil resistance

(Ambient temperature 20

°

C)

Safety device

Operating temperature mm

W

Open

°

C

Close

°

C

VAC,

µ

F Run capacitor

Heat exchange

Coil

Rows ..... fin pitch

Face area mm m

2

SPW-C253GH5

220 - 230 - 240 V / 1 phase / 50 Hz

CR - C253GH5 (Microprocessor)

250 V, 3.15 A

Rotary (Hermetic)

C - R221H5W

220 - 240 V / 1 phase / 50 Hz

2200

1500

C – R : 0.76

, R – S : 3.52

C – S : 2.76

Internal type

160

±

5

87

±

11

240V, 25 W

R22 - 3.0

ACB - 1TB07

30

+ 2.0

+ 0.5

24

±

2.0

Propeller

1 ..... ø460

2 (AUTO)

KFC6T - 91C5P

220 - 230 - 240 V / 1 phase / 50 Hz

6...772 / 376

70

WHT – BRN : 127.3

, VLT – YEL : 15.0

WHT – VLT : 56.7

, YEL – PNK : 7.2

Internal type

130

±

8

79

±

15

440 V, 6

µ

F

Aluminium plate fin / Copper tube

2 ..... 2.0

0.616

SM830035

– 15 –

1. Specifications

1

1-2 Major Component Specifications

(B) Outdoor Unit

Unit Model No.

Source

Controller P.C.B. Ass'y

Control circuit fuse

Compressor

Model ..... number

Source

Nominal output

Compressor oil

Coil resistance

(Ambient temperature 25

°

C)

Safety devices

Overload relay models

Operating temperature Open

Close

°

C

°

C

Crank case heater

Refrigerant amount at shipment

High pressure switch

Set pressure kg

OFF kg/cm 2

ON kg/cm 2

Fan

Number...diameter

Fan speeds

Fan motor

Model

Source

No. of pole ..... rpm (230 V, High / Med.)

Nominal output

Coil resistance

(Ambient temperature 20

°

C)

Safety device

Operating temperature Open

Close

VAC, Run capacitor

Heat exchange

Coil

Rows ..... fin pitch

Face area mm

W

°

C

°

C

µ

F mm m

2

W cc

SPW-C253GH8

380 - 400 - 415 V / 3 phase / 50 Hz

CR - C253GH (Microprocessor)

250 V, 3.15 A

Rotary (Hermetic)

C - R224H8U

380 - 400 - 415 V / 3 phase / 50 Hz

2400

1350

T – R : 5.54

, R – S : 5.54

S – T : 5.54

Internal type

120

±

5

98

±

11

240V, 25 W

R22 - 3.0

ACB - 1TB07

30

+ 2.0

+ 0.5

24

±

2.0

Propeller

1 ..... ø460

2 (AUTO)

KFC6T - 91C5P

220 - 230 - 240 V / 1 phase / 50 Hz

6...772 / 376

70

WHT – BRN : 127.3

, VLT – YEL : 15.0

WHT – VLT : 56.7

, YEL – PNK : 7.2

Internal type

130

±

8

79

±

15

440 V, 6

µ

F

Aluminium plate fin / Copper tube

2 ..... 2.0

0.616

SM830035

– 16 –

1-2 Major Component Specifications

(B) Outdoor Unit

Unit Model No.

Source

Controller P.C.B. Ass'y

Control circuit fuse

Compressor

Model ..... number

Source

Nominal output

Compressor oil

Coil resistance

(Ambient temperature 25

°

C)

Crank case heater

Safety devices

Overload relay models

Operating temperature Open

Close

W cc

°

C

°

C kg

SPW-C363GH8 SPW-C483GH8

380 - 400 - 415 V / 3 phase / 50 Hz

CR - C253GH (Microprocessor)

250 V, 3.15 A

Rotary (Hermetic)

C - R243H8V

Scroll (Hermetic)

ZR61KC - TFD - 522

380 - 400 - 415 V / 3 phase / 50 Hz

2,400 3,700

1,350 2,130

T – R : 5.54 , R – S : 5.54

T 1 – T2 : 2.72 , T2 – T3 : 2.72

S – T : 5.54

T 3 – T1 : 2.72

240 V, 25 W 240 V, 36 W

120

±

5

98

±

11

R22 - 3.5

Internal type

130

61

R22 - 4.5

Refrigerant amount at shipment

High pressure switch

Set pressure OFF kg/cm 2

ON kg/cm 2 mm

ACB - 1TB07

30

+ 2.0

+ 0.5

24

±

2.0

Propeller

2 ..... ø460

2 (AUTO)

Fan

Number...diameter

Fan speeds

Fan motor

Model

Source

No. of pole ..... rpm (230V, High / Med.)

Nominal output

Coil resistance

(Ambient temperature 20

°

C)

Safety device

Operating temperature Open

Close

VAC,

W

°

C

°

C

µ

F

KFC6T - 91C5P

×

2

220 - 230 - 240 V / 1 phase / 50 Hz

6...772 / 376

70 W

×

2

BRN – WHT : 127.3

, VLT – YEL : 15.0

WHT – VLT : 56.7

, YEL – PNK : 7.2

Internal type

130

±

8

79

±

15

440 V, 6

µ

F

×

2 Run capacitor

Heat exchange

Coil

Rows ..... fin pitch

Face area mm m 2

Aluminium plate fin / Copper tube

2 ..... 2.0

1.08

SM830035

– 17 –

1. Specifications

1

1-3 Other Component Specifications

Unit model No.

Power Transformer

Rated

Primary

Secondary

Coil resistance

Thermal cut off temperature

Thermistor (Coil sensor)

Coil resistance

Thermistor (Room or coil sensor)

Coil resistance

Relay

Coil rated

Contact rating

Coil resistance (at 25

°

C)

Solenoid control valve or coil

Solenoid control valve

Solenoid coil

Drain pump

Rated

Float switch

Rated (Contact rated)

V. Hz

° k k

V

C

V.A

Indoor Unit

SPW-U253GH56

ATR - II215TB

AC 230 V, 50 Hz

10.2 V , 1.4 A

14 V , 0.5 A

AC 230 V, 50 Hz

14 V , 0.4 A

WHT – WHT : 110 , BRN – BRN : 0.5 WHT – WHT : 300 , BRN – BRN : 2.2

RED – RED : 2.3

145 145

PBC - 41E - S36, PBC - 41E - S25, PBC - 41E-S4

–10

°

C : 23.7

– 5

°

C : 18.8

0

°

C : 15.0

5

°

C : 12.1

,

,

,

,

10

20

30

40

°

°

°

°

C : 9.7

C : 6.5

C : 4.4

C : 3.1

45

°

C : 2.6

KTEC - 35 - S6

0

°

C : 16.5 , 40

°

C : 2.7

5

°

C : 12.8 , 45

°

C : 2.2

10

°

C : 10.0 , 50

°

C : 1.8

20

°

C : 6.3 , 55

°

C : 1.5

30

°

C : 4.0 ,

PTC - 51H - S1

60

°

C : 13.8

, 90

°

C : 5.1

70

°

C : 9.7

, 100

°

C : 3.8

75

°

C : 8.2

, 110

°

C : 2.8

80

°

C : 7.0

, 120

°

C : 2.2

85

°

C : 5.9

, 130

°

C : 1.7

— FMCA - 1SZ607

AC 220 - 240 V

AC 440 V, 13 A

IKV - 24D12

DKV - MOZS550E0

WP20SL - 9

AC 230 V, 14.7 W

FS - 3502 - 202

AC 230 V, 50 W

Outdoor Unit

SPW-C253GH5, SPW-C253GH8

ATR - I65B

CHV - 0201

CHV - 01AJ504D1

– 18 –

SM830035

1-3 Other Component Specifications

Unit model No.

Power Transformer

Rated

Primary

Secondary

Coil resistance

Thermal cut off temperature

Thermistor (Coil sensor)

Coil resistance

Thermistor (Room or coil sensor)

Coil resistance

Relay

Coil rated

Contact rating

Coil resistance (at 25

°

C)

Solenoid control valve or coil

Solenoid control valve

Solenoid coil

Drain pump

Rated

Float switch

Rated (Contact rated)

V. Hz

° k k

V

C

V.A

Indoor Unit

SPW-U363GH56 SPW-U483GH56

ATR - II215TB

AC 230 V, 50 Hz

10.2 V , 1.4 A

14 V , 0.5 A

AC 230 V, 50 Hz

14 V , 0.4 A

WHT – WHT : 110 , BRN – BRN : 0.5 WHT – WHT : 300 , BRN – BRN : 2.2

RED – RED : 2.3

145 145

PBC - 41E - S36, PBC - 41E - S25, PBC - 41E-S4

–10

°

C : 23.7

–5

°

C : 18.8

0

°

C : 15.0

5

°

C : 12.1

,

,

,

,

10

20

30

40

°

°

°

°

C : 9.7

C : 6.5

C : 4.4

C : 3.1

45

°

C : 2.6

KTEC - 35 - S6

0

°

C : 16.5 , 40

°

C : 2.7

5

°

C : 12.8 , 45

°

C : 2.2

10

°

C : 10.0 , 50

°

C : 1.8

20

°

C : 6.3 , 55

°

C : 1.5

30

°

C : 4.0

PTC - 51H - S1

60

°

C : 13.8

, 90

°

C : 5.1

70

°

C : 9.7

, 100

°

C : 3.8

75

°

C : 8.2

, 110

°

C : 2.8

80

°

C : 7.0

, 120

°

C : 2.2

85

°

C : 5.9

, 130

°

C : 1.7

FMCA - 1SZ607

AC 220 - 240 V

AC 440 V, 13 A

HKV - 30D16

EKV - MOZS559E0

WP20SL - 9

AC 230 V, 14.7 W

FS - 3502 - 202

AC 230 V, 50 W

Outdoor Unit

SPW-C363GH8 SPW-C483GH8

ATR - I65B

CHV - 0301

CHV - 0401

CHV - 01AJ504D1

– 19 –

SM830035

1-4 Dimensional Data

(A) Indoor Unit : 25 Type

1

256

(O.D)

26

15

25

15

665

50

285

117

100

665

590

(Suspension bolt pitch)

38

1. Specifications

up

Dimension: mm

9

175

120

Fig. 1

– 20 –

20

13 107

200

107

9

Refrigerant liquid line (Narrow tube – ø 6.35)

(In case of 25 type, use the tube connector)

Refrigerant gas line (Wide tube – ø 15.88)

Drain connection (25 A OD.32 mm)

Electrical junction box

Power supply entry

Mounting for suspension

Duct connection for discharge (ø200)

Duct connection for suction

Fresh air intake (ø150)

0579_U_S

SM830035

(A) Indoor Unit : 36, 48 Type

(O.D)

256

26

15

25

15

665

50

285

117

100

665

(Suspension bolt pitch)

590

38

9

Refrigerant liquid line

Refrigerant gas line

Drain connection

Electrical junction box

Power supply entry

(Narrow tube – ø 9.52)

(Wide tube – ø19.05)

(25 A OD.32 mm)

Mounting for suspension

Duct connection for discharge (ø200)

Duct connection for suction

Fresh air intake (ø150)

9

175

120

– 21 –

20

13

200

107 107

Dimension: mm

0303_U_I

SM830035

1. Specifications

1

(B) Outdoor Unit :SPW-C253GH5

SPW-C253GH8

170 660 110

940

Dimension : mm

Hole for anchor bolt (4-ø13)

Refrigerant tube joint (narrow tube)

Flare connection 1/4 in (6.35 mm)

Refrigerant tube joint (wide tube)

Flare connection 5/8 in (15.88 mm)

Refrigerant tubing inlet

Power supply inlet

0411_C_S

Fig. 2

– 22 –

SM830035

(B) Outdoor Unit :SPW-C363GH8

SPW-C483GH8

170 660 110

940

Fig. 3

– 23 –

Dimension : mm

Hole for anchor bolt (4-ø13)

Refrigerant tube joint (narrow tube)

Flare connection 3/8 in (9.52 mm)

Refrigerant tube joint (wide tube)

Flare connection 3/4 in (19.05 mm)

Refrigerant tubing inlet

Power supply inlet

0412_C_S

SM830035

1. Specifications

1

1-5 Refrigerant Flow Diagram

Outdoor Unit : SPW-C253GH5

SPW-C253GH8

Indoor Unit : SPW-U253GH56

Compressor

Accumulator

Accumulator

Gas line service valve

O.D.

ø15.88mm

(5/8")

Gas line nipple

High pressure switch

HP

EC

Heat exchanger

P

Distributor

Muffler

4-way valve

Liquid line service valve

O.D.

ø6.35mm

(1/4")

EC

Heat exchanger

Distributor

P

Strainer

Electronic ref.control

valve

M

Liquid line nipple

Strainer

Sub-heat exchanger

Cooling Cycle

Heating Cycle

0417_C_S

Fig. 4

– 24 –

SM830035

Outdoor Unit : SPW-C363GH8

SPW-C483GH8

Indoor Unit : SPW-U363GH56

SPW-U483GH56

Compressor *Accumulator

Accumulator

Gas line service valve

HP

High pressure switch

Muffler

4-way valve

O.D.

ø19.05mm

(3/4")

Gas line nipple

EC

P

Heat exchanger

Distributor

Liquid line service valve

Sub-heat exchanger

Cooling Cycle

Heating Cycle

*Hot equipped in “SPW-C483GH8”

O.D.

ø9.52mm

(3/8")

EC

Heat exchanger

Distributor

P

Strainer

Electronic ref.control

valve

M

Liquid line nipple

Strainer

0418_C_S

Fig. 6

1-6 Operating Range

Cooling

Heating

Temperature

Maximum

Minimum

Maximum

Minimum

Indoor air intake temp.

35

°

C DB / 25

°

C WB

17

°

C DB / 14

°

C WB

27

°

C DB / — WB

16

°

C DB / — WB

Outdoor air intake temp.

45

°

C DB

–5

°

C DB

24

°

C DB / 18

°

C WB

–15

°

C DB / — WB

– 25 –

SM830035

1

1. Specifications

– 26 –

SM830035

2. Processes and functions

2. PROCESSES AND FUNCTIONS

2-1 Room Temperature Control .......................................................................... 28

(A) Cooling .....................................................................................................28

(B) Heating .....................................................................................................29

2-2 Cold Draft Prevention (Heating Cycle) .......................................................... 30

2-3 Automatic Fan Speed (Indoor Unit) ............................................................... 31

(A) Cooling .....................................................................................................31

(B) Heating .....................................................................................................31

2-4 Outdoor Fan Speed Control .......................................................................... 32

(A) Cooling .....................................................................................................32

(B) Heating .....................................................................................................32

2-5 Freeze Prevention (Cooling) ......................................................................... 33

2-6 Condensing Temperature Control (Cooling) ................................................. 34

2-7 Overload Protection (Heating)....................................................................... 35

2-8 Discharge Temperature Control (Cooling and Heating) ................................ 36

2-9 Auto. Mode for Automatic Heating/Cooling Switching ................................... 36

2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating)......................... 38

2-11 4-Way Valve, Solenoid Control ..................................................................... 39

(A) Normal Control Mode ...............................................................................39

(B) AUTO Control Mode .................................................................................40

2-12 Automatic Restart after Power Interruption ................................................... 40

2-13 Electronic Refrigerant Control Valve ............................................................. 41

2-14 Compressor Discharge Gas Temperature .................................................... 41

(A) Cooling .....................................................................................................41

(B) Heating (Except During Defrosting) ......................................................... 41

2-15 Compressor Current Detection Circuit .......................................................... 42

2-16 Dehumidifying Operation ...............................................................................43

2-17 Drain Pump Control .......................................................................................44

2-18 Electronic Refrigerant Control Valve Control ................................................ 45

2-19 Voltage Detection Control ............................................................................. 46

2

– 27 –

SM830035

2. Processes and functions

2-1 Room Temperature Control

The unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF.

This process is controlled by the thermostat located in the indoor unit.

The figures on this and the next page show how each part of the system performs as the room temperature changes and the thermostat activates the compressor to start (thermo

ON) or stop (thermo OFF). Fig. 1 shows about the cooling cycle, and Fig. 2 shows about the heating cycle.

2

(A) Cooling

THERMO. OFF

(THERMO. ON)

BODY SENSOR

T+1

°

C

SET TEMP. T

°

C

T–1

°

C

COMPRESSOR

1

OUTDOOR FAN

(H OR M)

MORE THAN

5 MINUTES 3 MINUTES

ON OFF

ON OFF

5 MINUTES

ON

ON

INDOOR FAN

SET SPEED

(THERMO. OFF)

ROOM TEMP.

THERMO. ON

MORE THAN

3 MINUTES

OFF

OFF

MORE THAN

5 MINUTES

ON

ON

DRAIN PUMP ON OFF ON OFF ON

DEW PROOF

HEATER

ON OFF ON

1. Refer to 2-4 Outdoor Fan Speed Control

OFF ON

0671_X_S

Fig. 1

Chart Summary and Explanations

Once the compressor starts, it keeps running for 5 minutes.

Once the compressor stops, it will not start running again for 3 minutes.

If you change the operation mode (HEAT, DRY, COOL, or FAN) during the cooling cycle, the control circuit stops the compressor for 3 minutes.

For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off, the compressor is not controlled by the room sensor.

Thermo ON: When room temperature rises 1

°

C (2

°

C when set on body sensor) above the set temperature T˚, (T˚+1

°

C or T˚+2

°

C when set on body sensor):

Compressor

ON

Thermo OFF: When the room temperature is –1

°

C below the set temperature T˚:

Compressor

OFF

SM830035

– 28 –

2. Processes and functions

(B) Heating

REMOTE CONTROL

SENSOR

(Only for wireless remote controller)

SET. +1

°

C

SETTING TEMP.

SET. –1

°

C

THERMO. ON

THERMO. OFF

THERMO. ON

THERMO. OFF

THERMO. ON

BODY SENSOR

+1

°

C

SET TEMP.+4

°

C SHIFT

–1

°

C

SET TEMP.

THERMO. ON

THERMO. OFF

THERMO. ON

THERMO. OFF

THERMO. ON

5 MINUTES 3 MINUTES

MORE THAN

5 MINUTES

MORE THAN

3 MINUTES

COMPRESSOR

1

OUTDOOR FAN

(H OR M)

OFF ON OFF ON OFF ON

2

INDOOR FAN

OFF ON

OFF

3 SECONDS

L

LL

L

SET SPEED

OFF

LL

ON

SET SPEED

2

STANDBY

OFF ON OFF ON OFF

(31

°

C)

INDOOR HEAT

EXCH.

COIL

27

°

C

TEMP.

E2

SOLENOID

COIL (4-WAY)

25

°

C

TEMP.

OPERATION

BUTTON

OFF

ON (REVERSING CYCLE)

ON

1. Refer to 2-4 Outdoor Fan Speed Control

2. Refer to 2-2 Cold Draft Prevention (Heating)

Chart Summary and Explanations

OFF

LL

ON

ON

SET SPEED

OFF

0672_X_S

Once the compressor starts, it keeps running for 5 minutes.

Once the compressor stops, it will not start running again for 3 minutes.

If you change the operation mode (HEAT, DRY, COOL or FAN) during the heating cycle, the control circuit stops the compressor for 3 minutes.

For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off, the compressor is not controlled by the room sensor.

When set on remote control sensor

Thermo ON: When room temperature is –1

°

C below the set temperature T˚.

Compressor

ON

Thermo OFF: When the room temperature is 1

°

C above the set temperature T˚, (T˚+1

°

C)

Compressor

OFF

When set on body sensor

NOTE: In case of Body sensor, operating temperature is shifted to setting temperature +4

°

C .

Fig. 2

2

SM830035

– 29 –

2

2. Processes and functions

2-2 Cold Draft Prevention (Heating Cycle)

The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up.

STANDBY shows on the remote controller when the indoor fan speed is LL

(very low) or OFF. This condition occurs in the following 3 cases:

• During Thermo OFF (refer to 2-1 B). Room Temperature Control, Heating)

• During the defrosting operation (refer to 2-10 Defrosting Control, Heating)

• Until either the coil temperature E2 reaches 27

°

C or when a maximum of 6 minutes has past.

The indoor fan motor operates in L instead of LL for 3 seconds as it starts to give the fan an initial boost.

33

31

INDOOR UNIT

COIL TEMP.

E2 (

°

C)

27

25

MAX. 6 MINUTES

10

SET

FAN

SPEED

AUTO OR H

M

LL

LL

L LL

“STANDBY”

INDICATOR

LL/OFF

LL/OFF

LL/OFF

LL

LL

LL

“STANDBY” APPEARS

LL= Very low speed

L= Low speed

L

L

L

M

M

L

M= Medium speed

H= High speed

H

M

L

0673_X_S

Fig. 3

Chart Summary and Explanations

The main idea of this chart is to show that the indoor fan speed increases and gets closer to the set fan speed as the coil temperature E2 rises.

The indoor unit’s coil temperature is taken from sensor E2 located in the middle of the indoor heat exchange coil.

The dotted line shows that the indoor fan motor is OFF. When the temperature at sensor E2 falls below 10

°

C, the indoor fan motor stops running.

SM830035

– 30 –

2. Processes and functions

2-3 Automatic Fan Speed (Indoor Unit)

By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the room temperature as the two charts shown below.

(A) Cooling

ROOM TEMP.

(deg)

+3

+2

+1

SET TEMP.

INDOOR FAN

SPEED H

M

H : High

M : Middle

L : Low

LL : Very low

L

M

H

0433_M_S

Chart Explanations and notes

When the fan speed changes, it keeps the speed step for at least 3 minutes, even if the temperature changes to another speed step during the time.

Fig. 4

2

(B) Heating

ROOM TEMP.

(deg)

SET TEMP.

–2

–4

INDOOR FAN

SPEED

H

M

: High

: Middle

L : Low

LL : Very low

H

M

L

M

H

0434_M_S

Chart Explanations and notes

When the fan speed changes, it keeps the speed step for at least 1 minute, even if the temperature changes to another speed step during the time.

Fig. 5

SM830035

– 31 –

2. Processes and functions

2-4 Outdoor Fan Speed Control

2

To optimize the performance of air conditioner, the outdoor fan speed is selected automatically according to the outdoor temperature.

Note that in both Cooling and Heating modes, the fan comes on at first at high speed (H mode) for 5 seconds. Since outdoor conditions sometimes make it difficult for the fan to start, this sudden surge of power may be necessary.

The outdoor fan operates in H mode for 3 minutes after the compressor stops

(excluding defrosting operation period).

Charts below show how the outdoor fan speed changes with the change in outdoor temperature.

(A) Cooling

Outdoor unit coil temperature [C2]

Not less than 25

° c

Not more than 25

° c

Outdoor fan motor (FMo)

H

M 25

H

M

Fig. 6

(B) Heating

Outdoor coil temperature [C2]

Not less than 14

° c

Not more than 14

° c

Outdoor fan motor (FMo)

M

H

14

M

H

Fig. 7

SM830035

– 32 –

2. Processes and functions

2-5 Freeze Prevention (Cooling)

Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoor unit's fan.

MIN. VALUE OF

EITHER E1 OR E2

INDOOR UNIT

TEMP.

3

2

1

0

(

°

C)

ELECTRONIC REF.

CONTROL

VALVE SIGNAL

COMPRESSOR

OPEN OPEN

CONTINUOUS

DETECTION

FOR 2 MINUTES

ON

MINIMUM 3

MINUTES

ON

0435_M_S

Fig. 8

Note: Freeze prevention is controlled by the temperature at the indoor heat exchanger coil as sensed by either sensor E1 (located at the entrance of the coil) or sensor E2 (located on the middle of the coil). Freeze prevention cycle is controlled by the lower temperature sensed at either of the two sensors.

Chart Explanations and notes

This chart shows when the electronic refrigerant control valve opens to regulate the temperature of the indoor unit coil to prevent freezing.

If the refrigerant control is not effective and the temperature continues to drop and stays below 0

°

C for 2 minutes continuously, the control circuit stops the compressor. The compressor does not start again until the temperature rises above 3

°

C.

The compressor stops for 3 minutes minimum.

2

SM830035

– 33 –

2

2. Processes and functions

2-6 Condensing Temperature Control (Cooling)

Condensing temperature is controlled by the outdoor heat exchanger coil temperature as sensed by sensor C2.

60

OUTDOOR UNIT

COIL TEMP. C2

(

°

C)

55

OUTDOOR FAN

SPEED

ELECTRONIC REF.

CONTROL VALVE

H, M

FORCED

H

OPEN

H, M

0436_M_S

Fig. 9

Chart Explanations and notes

This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to control condensing temperature.

Sensor C2 is located in the middle of the outdoor unit heat exchange coil.

When C2 rises above 60

°

C the electronic refrigerant control valve opens at 50 steps/30 seconds, and the outdoor fan speed is forced to change to high (H) until C2 falls below

55

°

C.

– 34 –

SM830035

2. Processes and functions

2-7 Overload Protection (Heating)

This function prevents the air conditioner from overloading.

INDOOR UNIT COIL

60

TEMP. (E2)

59

55

(

°

C)

64

62

53

OVERLOAD

PROTECTION

FUZZY CONTROL

OVERLOAD PROTECTION

FUZZY CONTROL

ELECTRONIC REF.

CONTROL VALVE

OUTDOOR FM

OPEN

H OR M

OPEN

START UP

COMPENSATION

OFF

H M H OR M

0438_M_S

Fig. 10

Chart Explanations and notes

This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to keep the indoor heat exchanger coil from overloading.

When sensor E2 rises above 60

°

C the electronic refrigerant control valve opens at 50 steps/

30 seconds until E2 falls below 59

°

C.

Sensor E2 is located in the middle of the indoor unit heat exchange unit.

When sensor E2 rises above 62

°

C, the control circuit stops the outdoor fan motor till the temp. drops to 55

°

C

Fuzzy control controls the electronic refrigerant control valve.

2

– 35 –

SM830035

2. Processes and functions

2

2-8 Discharge Temperature Control (Cooling and Heating)

This function prevents the compressor motor from burnout by overheating.

(135) 115

(125) 105

(115) 95

(113) 93

DISCHARGE GAS

TEMP. (

°

C)

(110) 90

(105) 85

THE TEMPERATURES

IN THE PARENTHESIS

IS FOR 48 TYPE.

OUTDOOR

FAN SPEED H OR M

COMPRESSOR

ELECTRONIC REF.

CONTROL VALVE

(DISCHARGE TEMP.)

OPEN

M

ON

H OR M

OPEN

TRIP IS OPERATED.

0439_M_S

Fig. 11

Chart Summary and Explanations

Discharge temperature is sensed by TH8 (discharge gas sensor).

When the temperature rises above 95

°

C the electronic refrigerant control valve opens at 50 steps/30 seconds until the temperature falls below 93

°

C.

During HEATING operation, when the temperature rises above 105

°

C, the control circuit stops the outdoor fan motor until the temperature falls below 90

°

C. Please note that this control does not function during COOLING operation.

For both COOLING and HEATING modes, if the temperature reaches 115

°

C (135

°

C for 48 type) the operation shuts down and alarm P3 appears on the remote controller.

The outdoor fan speed is controlled on discharge temp. at heating mode.

2-9 Auto. Mode for Automatic Heating/Cooling Switching

When the AUTO mode is selected, the microprocessor calculates the difference between the set temperature and the room temperature, and automatically switches to the COOLING or HEATING mode to maintain the desired temperature.

Room temp.

]

Set temp.

COOLING

Room temp.

<

Set temp.

HEATING

This means that if the room temperature is higher or equal to the set temperature, COOLING operation starts. If the room temperature is lower than the set temperature, HEATING operation starts.

SM830035

– 36 –

2. Processes and functions

2-9 Auto. Mode for Automatic Heating/Cooling Switching

COOLING SELECTION TEMP.

+2.5 deg

SHIFT SET TEMP.

+2 deg

A

REMOTE CONTROLLED

SET TEMP.

B

SHIFT SET TEMP.

–2 deg

HEATING SELECTION TEMP.

–3 deg

C

HEATING COOLING HEATING

0440_M_S

Fig. 12

Chart summary and Explanations

This chart shows how the Operation Mode (COOLING or HEATING) is determined by the microprocessor taking the room temperature into consideration. It also shows the temperature points at which the cooling or heating mode is switched, when the AUTO mode is selected.

After operation starts, the set temperature shifts automatically by +2 deg. at cooling and by -

2 deg. at heating. For example, if cooling is selected, the set temperature changes from

20

°

C to 22

°

C.

(The display of the remote controller remains 20

°

C.)

The change of the operation mode (heating to cooling, cooling to heating) by the change of the room temperature during the operation is as follows.

Heating to Cooling; Room temp.

Shifted temp + 0.5 deg.

Cooling to Heating; Room temp.

Shifted temp -1.0deg.

For example, if the room temperature rises above 22.5

°

C (=22+0.5) during the cooling operation at the room temperature 20

°

C set by the remote controller, the operation changes to cooling. When the room temperature lowers below 17

°

C (=18-1.0) thereafter, the operation changes to heating again.

In heating operation, using the body sensor, room temperature control is designed so that room air temp. is sensed as 4 deg. lower than suctioned air at indoor unit taking into account of the temperature gap between upper part and lower part of the room.

Within 10 minutes after the compressor turns OFF, the operation does not change to cooling (heating), even when the room temperature changes from C to A (A to C).

When switching from cooling (heating) to heating (cooling), the actuation of the 4 way valve will delay about 30-50 seconds after the compressor turns ON.

2

SM830035

– 37 –

2. Processes and functions

2

2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating)

When the outdoor temperature is low, frost may form on the outdoor heat exchanger coil.

When this occurred, the defrosting system operates. The microprocessor in the outdoor unit monitors the relationship between the temperature of the outdoor heat exchanger coil and the outdoor temperature so it can defrost when necessary.

Flow of Defrosting

Heating operation

No counting time for detecting frost : 15 minutes

Detecting the frost

Stand by time for defros:

25 minutes

-13.7

OUTDOOR COIL

TEMP. C1 (

°

C)

Y

“RELEASE OF

10

DEFROSTING”

RANGE

OUTDOOR AIR TEMP.

(

°

C)

10

X

-3

-8

-20

The area below the heavy line is the frost detection area.

Either continuous 8 minutes or cumulative 60 minutes are required to detect frost in the “Frosting” range.

Defrosting

Release of defrosting

Refer to time chart.

*Minimum continuous operating time by defrosting is 48 minutes (= 15 + 8 + 25).

Occurs either when the temperature of C1 (the outdoor heat exchanger coil) has reached 10

°

C or above, or when the maximum defrosting time (9 minutes) has elapsed.

0441_M_S

Fig. 13

Time Chart for Defrosting

1 MINUTE MAX. 9 MINUTES 1 MINUTE

COMPRESSOR ON ON ON

SOLENOID COIL

(4 WAY VALVE)

OUTDOOR FAN

(H OR L)

INDOOR FAN

(SET SPEED)

“STANDBY”

INDICATOR

ON

ON

OFF OR LL

“STANDBY” APPEARS

OFF

OR LL

Defrosting

Start

Release of

Defrosting

During the defrost cycle, STANDBY appears on the remote controller.

*......Cold Draft Prevention may operate occasionally

ON

ON

0442_M_S

Fig. 14

SM830035

– 38 –

2. Processes and functions

2-11 4-Way Valve, Solenoid Control

The basic function of the 4-way valve is to direct the refrigerant in the correct direction according to the Operation Mode (COOLING or HEATING) selected.

The following two charts show conditions of the controls and functions listed in the left hand column when the solenoid is ON or OFF. Chart (A) on this page shows the relationships when the temperature control is in NORMAL mode, and Chart (B) on the next page shows the relationships when the remote controller is set to AUTO mode.

(A) Normal Control Mode

POWER SOURCE

OFF

OPERATION

BUTTON

ON OFF

ON

ON

MODE

COOL

BUTTON HEAT

COMPRESSOR

SOLENOID COIL

(4-WAY VALVE)

OFF

HEAT

3 MINUTES

2

TURN ON

TURN OFF

ON

1

ON

1. . . More than 5 minutes

OFF

COOL

ON

HEAT

THERMO OFF

THERMO

ON

THERMO OFF

THERMO

ON

OFF ON OFF ON

2 2

1 1 1

OFF

2. . . More than 3 minutes

ON

0443_M_S

Fig. 15

Chart Summary and Explanations

For the first 3 minutes after power is applied, the 4–way valve remains OFF and the compressor will not operate, even if the ON button is pushed.

If the 4–way valve is turned OFF with the compressor operating, the air conditioner operates in COOLING mode. See Table below.

If the 4–way valve is turned ON with the compressor operating, the air conditioner operates in HEATING mode. See Table below.

Operation Mode

COOLING

HEATING

4-way valve

Compressor solenoid

OFF

ON

ON

2

SM830035

– 39 –

2. Processes and functions

(B) AUTO Control Mode

2

POWER SOURCE OFF ON

OPERATION

BUTTON

AUTO

MODE

COOL

CONTROL HEAT

COMPRESSOR OFF

SOLENOID COIL

(4-WAY VALVE)

OFF

MORE THAN 10 MINUTES

(THERMO. OFF)

ON

MORE THAN 10 MINUTES

(THERMO. OFF)

COOL

HEAT

3 MINUTES

ON OFF ON OFF

HEAT

THERMO. OFF

THERMO. ON

ON

MORE THAN

3 MINUTES

OFF ON

MORE THAN

30 – 50 SECONDS

MORE THAN

30 – 50 SECONDS

ON OFF ON

Fig. 16

0445_M_S

When the Compressor has stopped while in AUTO mode, the 4-way valve switches on

(heating) or off (cooling) within 1 minute according to the following conditions:

Compressor has stopped under the operation of

“AUTO mode” condition.

4-way valve delays its switching for 30 – 50 seconds after compressor has been turned ON.

0446_M_S

Fig. 17

2-12 Automatic Restart after Power Interruption

This air conditionner has a power failure recovery function.

SM830035

– 40 –

2. Processes and functions

2-13 Electronic Refrigerant Control Valve

This valve allows very precise and smooth control of the amount of refrigerant flow in the system. Since the valve is operated by a step motor, the control circuits can open or close it in very exact amounts, so the degree of heating or cooling can be changed by just a little, or changed very quickly or slowly.

(Completely close …… 0 step)

(Full open ................ 480 step)

Model

25 type

36 type

48 type

HEAT

100 step

90 step

100 step

Min. open

COOL

120 step

90 step

110 step

Max. open

480 step

Fuzzy Control

Fuzzy Control is a controlling system to control electronic refrigerant control valve using fuzzy logic. It regulates the functions of heating and cooling, as well as some of the processes inside the unit, by taking account of many different conditions of temperature, fan speed, etc. These control circuits work automatically to send just the right amount of refrigerant through the Electronic Refrigerant Control Valve.

2

2-14 Compressor Discharge Gas Temperature

(A) Cooling

Indoor temp. (˚C)

Outdoor temp. (

°

C)

Compressor discharge gas temp. (

°

C)

13 or below

20 – 25

14 – 16

40 – 80 40 – 90

26 – 28

27 – 35

60 – 100

29 – 32

36 – 43

70 – 105

(B) Heating (Except During Defrosting)

Indoor temp. (

°

C)

Outdoor temp. (

°

C)

Compressor discharge gas temp. (

°

C)

18 – 21 22 – 25 26 – 30

0 or below 1 – 10 0 or below 1 – 10 11 – 21 0 or below 1 – 10 11 – 21

40 – 80 50 – 90 40 – 90 50 – 100 60 – 105 50 – 90 60 – 100 70 – 105

Operate the unit at least 30 minutes to stabilize the discharge temperature.

The above discharge temperature was measured with a 15m tubing length.

The temperature may vary with tubing length.

SM830035

– 41 –

2. Processes and functions

2

2-15 Compressor Current Detection Circuit

The Compressor Current Detection Circuit detects the compressor current and, depending on the current range, can stop the compressor motor so it will not be damaged by overcurrent.

Overcurrent can be caused by several factors, particularly mechanical seizing of the compressor or liquid backflow. Either of these conditions can hold the compressor to run, and thus drawing so much current that the motor can burn out.

Comp. Amps.(A)

Locked Comp. Cut-off Range

Overload Protection Range

Normal Operation Range

Is

Rated Current value

0447_M_S

Fig. 18

Outdoor Model

SPW-C253GH5

SPW-C253GH8

SPW-C363GH8

SPW-C483GH8

Rated Current Value ls (A)

24.0

7.1

7.5

10.4

Overload Protection ls x 1.17 (A)

28.08

8.3

8.8

12.2

Locked Compressor Cut-off

Is x 1.4 (A)

33.6

9.9

10.5

14.6

Chart Summary and Explanations

Overload Protection

• When the detected current is 1.17 – 1.4 times greater than the rated current value (Is) and continues for 30 seconds, both compressor and outdoor fan stop (Thermostat OFF).

• After 3-minute pause, if the air conditioner is ready for Thermostat ON, it starts again. However, if the condition mentioned above repeats twice within 30 minutes, the remote controller displays the alarm message H01, compressor overload.

Locked Compressor Cut-off

• When the detected current is 1.4 times greater than the rated current value (ls) and continues for 2

seconds, both compressor and outdoor fan stop (Thermostat OFF).

• After 3-minute pause, if the air conditioner is ready for Thermostat ON, it starts again. However, if the condition mentioned above repeats twice, the remote controller displays the alarm message H02,

compressor locked.

Failure of Compressor Current Detection

• When the Compressor Current Detection Circuit fails to detect the compressor current within 2

seconds after compressor starts, both compressor and outdoor fan stop (Thermostat OFF).

• After 3-minute pause, if the air conditioner is ready for Thermostat ON, it starts again. However, when the circuit fails to detect the current twice in a row, the remote controller displays alarm message H03,

Failure of compressor Current Detection.

SM830035

– 42 –

2. Processes and functions

2-16 Dehumidifying Operation

Dehumidifying operation uses the cooling cycle to remove moisture from the air, but by running an indoor fan at a low speed, to dehumidify without greatly lowering room temperature. In this mode, the microprocessor automatically controls the ON-OFF operation between +2 deg. and -2 deg. of the set temperature.

ROOM TEMP.

(DEG)

A

SET TEMP.

B

+2deg

–2deg

C

0448_M_S

Fig. 19

A range: When the room temperature is in this range, cooling operation starts. However, when the temperature is below 18

°

C, the cooling operation does not start.

B range: When the room temperature is in this range, the air conditioner automatically repeats the dehumidifying cycle of 5 minutes ON, 3 minutes OFF – see Fig. 22 for details.

C range: When the room temperature is in this range, the microprocessor shuts off the air conditioner.

ROOM TEMP

T+2

°

C (T+1

°

C)

SET TEMP. T

°

C

T–2

°

C (T–1

°

C)

AREA

A

B

C

5 MINUTES 3 MINUTES

2

COMPRESSOR ON OFF ON OFF ON

OUTDOOR FAN ON OFF ON OFF ON

INDOOR FAN

L

Body sensor

0449_M_S

Fig. 20

The indoor fan speed is automatically set to L and cannot be adjusted to M or H.

When the set temperature is either 18 or 19

°

C, the set temperature is considered the same as 20

°

C.

Room temperature is monitored every 8 minutes when it is in the B range to select the best operation mode.

SM830035

– 43 –

2

2. Processes and functions

2-17 Drain Pump Control

1) When the compressor is ON in cooling operation, the drain pump will start to operate.

2) When the compressor is stopped by freeze prevention function, the drain pump will run for 20 minutes.

3) After the float switch turns ON, the drain pump will start to operate 5 minues. After the recovery of the float switch, the drain pump turns OFF.

– 44 –

SM830035

2. Processes and functions

2-18 Electronic Refrigerant Control Valve Control

The circulation volume of the refrigerant is controlled by a pulse type electronic control valve.

When the power is switched ON, the opening degree of the electronic control valve is controlled between 90 and 480 steps after setting the initial step at the time when the thermostat is ON.

Contents and Order of control

Cooling

Start

Heating

Start

Discharge gas temperature control

Outdoor unit coil temperature control

Freeze prevention control

Refrigerant flow distribution control

Discharge gas target temperature control (Fuzzy control)

Discharge gas temperature control

High load prevention control

Heating start up control

Refrigerant flow distribution control

*

Discharge gas target temperature control (Fuzzy control)

*

* Repeat control in accordance with the priority order.

0451_M_S

Even though the operation is performed every 30 seconds, the control of discharge gas temperature, high load prevention, outdoor unit coil temperature and freeze prevention activates when it occurs.

(1) Refrigerant flow distribution control

At the control of flexible combination (a plural number of indoor units are set), the opening degree of the electronic control valve is controlled by the indoor unit coil temperature.

Cooling: indoor unit coil E2 temperature (located at the middle of coil)

Heating: indoor unit coil E1 temperature (located at the outlet of coil)

(2) Fuzzy control (optimal refrigerant flow rate control)

By outputting the fuzzy estimation result corresponding to the fuzzy input variables (the indoor unit coil temp., the deviation between the actual discharge gas temp. and the target discharge gas temperature calculated from the outdoor unit coil temperature and the change thereof), the electronic refrigerant valve is controlled so that the unit can perform its maximum ability in accordance with the indoor and outdoor temperature conditions at the operation.

SM830035

– 45 –

2

2

2. Processes and functions

2-19 Voltage Detection Control

When the power voltage falls below 160 V (voltage between N phase and each phase) or rises above 260 V, the “P2” alarm is issued to protect the compressor and electrical components.

– 46 –

SM830035

3. Electrical data

3. ELECTRICAL DATA

3-1 Indoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................... 48

3-2 Outdoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................. 52

3

– 47 –

SM830035

3. Electrical data

3

3-1 Indoor Unit

1

SPW-U253GH56

GRY

WHT

GRY

VLT

ORG

BLK

YEL

BRN

PNK

GRY

WHT

GRY

VLT

ORG

BLK

YEL

BRN

PNK

BRN

BRN

PNK

VLT

ORG

YEL

WHT

GRY

GRY

WHT

WHT

BLK

WHT

RED

BRN

BRN

RED

RED

BLU

PNK

BRN

RED

BLK

BLK

BLK

BLK

BLK

BLK

BRN

BRN

ORG

BLK

YEL

RED

GRY

ORG

BLK

YEL

RED

GRY

ORG

BLU

WHT

BLK

BLK

BLK

BLK

BLK

BLK

GRN/YEL

SM830035

– 48 –

3. Electrical data

3-1 Indoor Unit

1

SPW-U253GH56

8P-1(L)

1

R

F1(5A)

1X

8P-2(N)

2X

N

3

3X

LL

3

L

4 5

H HH

6 7

HT

FMI

RC1

1 2

N

4

3X

RY2

LL

1

L

3

H

5

HH

7

R

1

DP

3

DPH

1

1

DP

2

1

• Schematic Diagram

3

T20

1

8

9

49FI

RCS

1

2

3

AC

230V

TR1

T20

3

1

2

3

4

VCC

CR-X253GH

Controller

SG

RC12V

G

T6

1

3

RN2

1

4

5

2

3

1

2

3

8P-R1

8P-R2

8P-R3

1

4

5

2

3

MOV

PNL

1

2

FS

1

3

1

2

3X

2X

1X

RY2

DP.DPH

DC12V

OC

SG1

SG2

1

2

1

3

1

2

1

2

1

2

Room Thermistor

TH1

Indoor Coil E1

TH2

Indoor Coil E2

TH3

Indoor Coil E3

TH4

8P8P-

U2 U1

To Outdoor Unit

FS

Symbols

MOV

RCS

TH1

TH2

TH3

FMI

49FI

RC1

F1

TR1

1X-3X

RY2

Description

Indoor Fan Motor

Indoor Motor Thermal Protector

Running Capacitor

Fuse

Power Transformer

Auxiliary Relay

Auxiliary Relay

Motor Operated Valve

Remote Control Switch

Room Thermistor

Thermistor (Indoor Coil E1)

Thermistor (Indoor Coil E2)

Symbols Description

TH4 Thermistor (Indoor Coil E3)

CR-X253GH Indoor Controller

Terminal Plate

DP

FS

Connector

Terminal

Drain Pump

Float Switch

S

854-2-5268-419-00-1 (U)

3

SM830035

– 49 –

3. Electrical data

3

3-1 Indoor Unit

1

SPW-U363GH56, SPW-U483GH56

GRY

WHT

GRY

VLT

ORG

BRN

PNK

BLK

YEL

GRY

WHT

GRY

VLT

ORG

BRN

PNK

BLK

YEL

GRY

WHT

GRY

VLT

ORG

BLK

YEL

BRN

PNK

BRN

BRN

PNK

BRN

BLU

GRY

WHT

GRY

VLT

ORG

BLK

YEL

BRN

PNK

ORG

YEL

VLT

WHT

ORG

YEL

VLT

WHT

WHT

BLK

RED

WHT

WHT

RED

BRN

BRN

RED

PNK

BLU

RED

BRN

PNK

BLK

RED

GRY

GRY

GRY

BRN

BLU

– 50 –

BLK

BLK

BLK

BLK

BLK

BLK

BRN

BRN

ORG

BLK

YEL

GRY

RED

ORG

BLK

YEL

GRY

RED

ORG

WHT

BLU

BLK

BLK

BLK

BLK

BLK

BLK

GRN/YEL

SM830035

3. Electrical data

3-1 Indoor Unit

1

SPW-U363GH56, SPW-U483GH56

8P-1(L)

1

R

F1(5A)

8P-2(N)

N

3

N

4

1

RN3

4Z 3Z 2Z 1Z 4Z 3Z 2Z 1Z

1X

3X

• Schematic Diagram

2X

RY2

1

LL

3

L

5

H

7

HH

DP

3

DPH

1

3 4

LL L

5

H

6 3 4

HH LL L

5

H

6

HH

FMI

1

RC0

1 2

7

FMI

2

HT

RC1

1 2

7

HT

4Z

3Z

2Z

1Z

1

DP

2

1 3

T20

1

RCS

1

2

3

9

8

8

49FI1

49FI2

9

AC

230V

TR1

T20

3

1

3

1

2

3

4

VCC

CR-X253GH

Controller

SG

RC12V

G

T6

RN2

1

4

5

2

3

1

2

3

8P-R1

8P-R2

8P-R3

1

4

5

2

3

PNL

1

2

MOV

FS

1

3

1

2

3X

2X

1X

RY2

DP.DPH

DC12V

OC

SG1

SG2

1

2

1

3

1

2

1

2

1

2

Room Thermistor

Indoor Coil

TH1

E1

Indoor Coil

TH2

E2

TH3

Indoor Coil

E3

TH4

8P-

U2

8P-

U1

To Outdoor Unit

FS

Symbols

MOV

RCS

TH1

TH2

TH3

FMI1, 2

49FI1, 2

RC0, 1

F1

TR1

1X-3X

RY2

Description

Indoor Fan Motor

Indoor Motor Thermal Protector

Running Capacitor

Fuse

Power Transformer

Auxiliary Relay

Auxiliary Relay

Motor Operated Valve

Remote Control Switch

Room Thermistor

Thermistor (Indoor Coil E1)

Thermistor (Indoor Coil E2)

Symbols Description

TH4 Thermistor (Indoor Coil E3)

CR-X253GH Indoor Controller

Terminal Plate

DP

FS

1Z-4Z

Connector

Terminal

Drain Pump

Float Switch

Auxiliary Relay

S

854-2-5268-420-00-1 (U)

3

SM830035

– 51 –

3. Electrical data

3

3-2 Outdoor Unit

1

SPW-C253GH5

BRN

WHT

RED

WHT

WHT

BLU

BLU

BRN

BRN

BRN

VLT

WHT

BLK

GRY

BRN

PNK

GRY

BRN

GRY

YEL

VLT

WHT

PNK

BLU

BLU

RED

WHT

– 52 –

YEL

BRN

BRN

BRN

WHT

RED

WHT

BLK

GRN/YEL

SM830035

3. Electrical data

3-2 Outdoor Unit

1

SPW-C253GH5

Terminal

Plate (6P)

-1

-2

-3

-4

-L

-N

CT

52C

RC

C

S

R

CM

N

L1 F1(3.15A)

1

52C

CH

2

• Schematic Diagram

63PH

1

RY1 RY2

63PH

RY3

3

RY4

H

3 5

LL

3

20S 52C

3

49

FO

7

H

5

M

6

L

7

20S

FMO

52C

RC2

1 2

2

1

49

C

9

3

4

49FO

RY1

RY2

RY3

RY4

CR-C253GH5

Controller

2P-1

CN2

RS

1

3

1

2

AC 230V

2P-2

TR

VCC

20S

52C

Outdoor

Coil C1

1

2

FM1

FM2

DC12V

N

Outdoor

Coil C2

Discharge gas

CT1

1

3

1

2

1

2

2

1

AC 14V

TH6

TH7

TH8

1 1 1

Symbols

20S

F1

TH6

TH7

TH8

CM

FMO

52C

49FO

63PH

CT

RC,RC2

TR

CH

Description Symbols Description

Compressor Motor

Outdoor Fan Motor

Compressor Motor Magnetic Contactor

Outdoor Fan Motor Thermal Protector

High Pressure Switch

Current Transmitter

Running Capacitor

Power Transformer

Crank Case Heater

Four Way Valve

Fuse

Thermistor (Outdoor Coil C1)

Thermistor (Outdoor Coil C2)

Thermistor (Discharge Gas)

CR-C253GH5 Outdoor Controller

RY1~4 Auxiliary Relay

Terminal Plate

Terminal

Connector

S

854-2-5268-452-00-2 (C253GH5)

3

SM830035

– 53 –

3

3-2 Outdoor Unit

2

SPW-C253GH8

WHT

WHT

WHT

RED

BLU

BLU

BRN

BRN

BRN

BRN

GRY

BRN

PNK

VLT

WHT WHT

GRY

YEL

VLT

GRY

BRN

PNK

BLU

BLU

3. Electrical data

RED

WHT

BLU

– 54 –

GRN/YEL

YEL

BRN

BRN

BRN

WHT

BLU

RED

GRY

GRY

SM830035

3. Electrical data

3-2 Outdoor Unit

2

SPW-C253GH8

Terminal

Plate (8P)

-1

-2

-3

-4

L1

-5

-6

L2

-7

L3

-8

N

CT

52C

R

S

T

CM

L2 L3 N

L1 F1(3.15A)

1

52C

CH

2

F2(3.15A)

• Schematic Diagram

63PH

1

RY1 RY2

63PH

RY3

3

RY4

H

3 5

LL

3

20S 52C

3

49

FO

7 3

49FO

4

2

H

5

M

6

L

7

20S

FMO

52C

RC2

1 2 1

49

C

9

49C

RY1

RY2

RY3

RY4

CR-C253GH

Controller

2P-1

CN2

RS

1

3

1

2

AC 230V

2P-2

TR

VCC

20S

52C

Outdoor

Coil C1

1

2

FM1

FM2

DC12V

Outdoor

Coil C2

Discharge gas

CT1

N L3 L2

1

3

1

2

1

2

2

1

AC 14V

TH6

TH7

TH8

1 1 1

Symbols

20S

F1,2

TH6

TH7

TH8

CM

FMO

52C

49C

49FO

63PH

CT

RC2

TR

CH

Description Symbols

Compressor Motor

Outdoor Fan Motor

Compressor Motor Magnetic Contactor

Compressor Motor Termal Protector

Outdoor Fan Motor Thermal Protector

High Pressure Switch

Current Transmitter

Running Capacitor

Power Transformer

Crank Case Heater

Four Way Valve

Fuse

Thermistor (Outdoor Coil C1)

Thermistor (Outdoor Coil C2)

Thermistor (Discharge Gas)

CR-C253GH

RY1~4

Description

Outdoor Controller

Auxiliary Relay

Terminal Plate

Terminal

Connector

S

854-2-5268-453-00-0 (C253GH8)

3

SM830035

– 55 –

3. Electrical data

3

3-2 Outdoor Unit

3

SPW-C363GH8

BLU

WHT

RED

WHT

WHT

WHT

RED

BLU

BLU

BRN

BRN

VLT

WHT

BRN

BLK

PNK

BRN

VLT

WHT

GRY

BRN

GRY

YEL

VLT

WHT

PNK

VLT

WHT

RED

BLK

GRY

GRY

GRY

GRY

WHT

BRN

PNK

YEL

VLT

BLU

BLU

YEL

BRN

BRN

BRN

RED

WHT

BLU

GRY

GRY

GRN/YEL

– 56 –

SM830035

3. Electrical data

3-2 Outdoor Unit

3

SPW-C363GH8

Terminal

Plate (8P)

-1

-2

-3

-4

L1

-5

-6

L2

-7

L3

-8

N

CT

52C

R

S

T

CM

L2 L3 N

L1 F1(3.15A)

52C

1

H

5

M

6

L

7

CH

FMO1

2

RC2

1 2

• Schematic Diagram

63PH

1

RY1 RY2

63PH

RY3

3

RY4

H

3 5

LL

3

20S 52C

3

49

FO

7 3

49FO1

2

4

3

H

5

M

6

L

7

20S

FMO2

52C

RC3

1 2 1

49

C

9

4

49FO2

49C

CR-C253GH

Controller

2P-1

CN2

RS

1

3

1

2

AC 230V

2P-2

TR

RY1

RY2

RY3

RY4

VCC

20S

52C

Outdoor

Coil C1

1

2

FM1

FM2

DC12V

Outdoor

Coil C2

Discharge gas

CT1

N L3 L2

1

2

1

2

1

3

2

1

AC 14V

TH6

TH7

TH8

1 1 1

F2(3.15A)

Symbols

TR

CH

20S

F1,2

TH6

TH7

TH8

CM

FMO1,2

52C

49C

49FO1,2

63PH

CT

RC2,3

Description Symbols

Compressor Motor

Outdoor Fan Motor

Compressor Motor Magnetic Contactor

Compressor Motor Termal Protector

Outdoor Fan Motor Thermal Protector

High Pressure Switch

Current Transmitter

Running Capacitor

Power Transformer

Crank Case Heater

Four Way Valve

Fuse

Thermistor (Outdoor Coil C1)

Thermistor (Outdoor Coil C2)

Thermistor (Discharge Gas)

CR-C253GH

RY1~4

Description

Outdoor Controller

Auxiliary Relay

Terminal Plate

Terminal

Connector

S

854-2-5268-454-00-1 (C363GH8)

3

SM830035

– 57 –

3. Electrical data

3

3-2 Outdoor Unit

4

SPW-C483GH8

RED

WHT

BLU

WHT

WHT

WHT

RED

BLU

BLU

BRN

BRN

VLT

WHT

BRN

PNK

BRN

WHT

GRY

VLT

WHT

GRY

YEL

VLT

GRY

BRN

PNK

BLK

GRY

BLK

GRY

VLT

WHT

RED

GRY

BRN

GRY

YEL

VLT

WHT

PNK

BLU

BLU

YEL

BRN

BRN

BRN

WHT

BLU

RED

GRN/YEL

– 58 –

SM830035

3. Electrical data

3-2 Outdoor Unit

4

SPW-C483GH8

Terminal

Plate (8P)

-1

-2

-3

-4

L1

-5

-6

L2

-7

L3

-8

N

CT

52C

T1

T2

T3

CM

L2 L3 N

L1 F1(3.15A)

52C

1

H

5

M

6

L

7

CH

FMO1

2

RC2

1 2

• Schematic Diagram

63PH

1

RY1 RY2

63PH

RY3

3

RY4

H

3 5

LL

3

20S 52C

3

49

FO

7 3

49FO1

2

H

5

M

6

L

7

20S

FMO2

52C

RC3

1 2 1

49

C

9

4

3

4

49FO2

RY1

RY2

RY3

RY4

CR-C253GH

Controller

2P-1

CN2

RS

1

3

1

2

AC 230V

2P-2

TR

VCC

2

1

20S

52C

Outdoor

Coil C1

1

2

FM1

FM2

DC12V

Outdoor

Coil C2

Discharge gas

CT1

N L3 L2

1

2

1

2

1

3

AC 14V

TH6

TH7

TH8

1 1 1

F2(3.15A)

Symbols

TR

CH

20S

F1,2

TH6

TH7

TH8

CM

FMO1,2

52C

49FO1,2

63PH

CT

RC2,3

Description Symbols

Compressor Motor

Outdoor Fan Motor

Compressor Motor Magnetic Contactor

Outdoor Fan Motor Thermal Protector

High Pressure Switch

Current Transmitter

Running Capacitor

Power Transformer

Crank Case Heater

Four Way Valve

Fuse

Thermistor (Outdoor Coil C1)

Thermistor (Outdoor Coil C2)

Thermistor (Discharge Gas)

CR-C253GH

RY1~4

Description

Outdoor Controller

Auxiliary Relay

Terminal Plate

Terminal

Connector

S

854-2-5268-457-00-2 (C483GH8)

3

SM830035

– 59 –

3. Electrical data

3

– 60 –

SM830035

4. Service procedures

4. SERVICE PROCEDURES

4-1 Troubleshooting .............................................................................................62

(1) Check before and after Troubleshooting ................................................ 63

(2) General Troubleshooting Flow Chart: Diagnosis and Remedy .............. 65

(3) Meanings of alarm messages ................................................................ 67

(4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y ................................ 69

(5) Symptoms and parts to inspect .............................................................. 70

(6) Procedures When a Specific Component Does Not Work ..................... 80

(7) Service Functions of Remote Controller ................................................. 82

4-2 Checking the Electrical Components ............................................................ 95

(1) Measurement of Insulation Resistance .................................................. 95

(2) Checking the Protective Devices............................................................ 97

(3) Checking the Electrical Parts ................................................................. 98

(4) Sensor and Solenoid Layout Diagram.................................................. 101

(5) Thermistor Characteristic Curve........................................................... 103

(6) PCB Setting ...........................................................................................104

(7) R.C Address Setting Method ................................................................ 105

(8) Automatic Address Setting Method ...................................................... 106

(9) Displaying Indoor / Outdoor Unit Combination Numbers ..................... 106

(10) Items to Check Prior to Test Run ......................................................... 107

(11) Test Run Procedure ..............................................................................108

4

– 61 –

SM830035

4. Service procedures

4-1 Troubleshooting

This section explains:

What the LED codes mean

What the remote control unit display screen messages mean

How to use the flow charts to find and solve problems

How to use the self-diagnostic tests to find parts that aren’t working right

4

This unit is made to be trouble free, and not need much service. However, with time, moving parts wear out, electronic components break down, and sometimes misuse damages the unit.

The purpose of this section is to help you when the unit is not working properly.

Sometimes your experience will tell you right away where to look for a problem, and when you find it you will know how to fix it at once.

Often, however, all you have is a symptom like “poor cooling” or “outside fan doesn’t come on.” Now you must find out the cause of the problem, and then how to fix it. This section provides several ways to help you go from the symptom to the cause and then the solution.

The first chart, General Troubleshooting Flow Chart is divided into two sections: Poor heating and Poor Cooling. Under each heading you will find the main things that can go wrong and cause either of these problems. Sometimes you can start with this chart and find the problem right away, but often you will come here for more suggestions after you have looked at the error code on the remote control unit display. This chart gives you the

"big picture" of problems and solutions.

The other main tool we explain here is the use of the Alarm Messages. When a certain part fails or a safety device has shut the unit down, any alpha-numeric codes appears on the display to guide you to the problem.

By understanding the code you can often go right to the problem area and then, with this manual and your knowledge of air conditioning, find the solution.

– 62 –

SM830035

4. Service procedures

(1)-1 Check before and after Troubleshooting (SPW-C253GH5)

Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.

1

. Check power supply wiring

Check the power supply wires are correctly connected between terminal

No. 1 & 2 on the 3P terminal plates in the indoor unit and the outdoor unit.

2

. Check inter-unit wiring

Check that inter-unit control wiring (DC low voltage) is correctly connected between the indoor unit and outdoor unit.

Power Supply: 50 Hz, single-phase, 220-230-240 V

Inter-unit power wiring

(Line voltage)

Indoor Unit

1

2

Inter-unit control wiring

(Low voltage)

RED 1 1

WHT

2 2

BLK 3 3

Remote controller

D

U1

U2

R1

R2

R3

B

Ground

Outdoor Unit

1

2

C

1

2

4

L

N

A

0

R.C. Address on the PCB: 0 (S2, BLK)

(0: Factory shipped state)

L

N

Power supply

220 - 240 V 50 Hz

Ground

0500_M_I

Fig. 28

3

. Check power supply

Check that voltage is within the specified range (

±

10% of the rating).

Check that power is being supplied.

4

If the following troubleshooting must be done with power being supplied, be careful not to touch any uninsulated live part that can cause ELECTRIC

SHOCK.

4

. Check the lead wires and connectors in indoor and outdoor units.

Check that the sheath of lead wires is not damaged.

Check that the lead wires are firmly connected at the terminal plate.

Check that the wiring is correct.

SM830035

– 63 –

4. Service procedures

(1)-2 Check before and after Troubleshooting (SPW-C253GH8, C363GH8, C483GH8)

Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.

1

. Check power supply wiring

Check that power supply wires are correctly connected to terminal No.5

through No.8 on the 8P terminal plate in the outdoor unit.

Check the power supply wires are correctly connected between terminal

No.1 and 2 on the 3P terminal plate in the indoor unit and terminal No.1

and 2 on the 8P terminal plate in the outdoor unit.

2

. Check inter-unit wiring

Check that inter-unit control wiring (DC low voltage) is correctly connected between the indoor unit and outdoor unit.

Power Supply: 50 Hz, 3-phase, 380-400-415 V

Inter-unit power wiring

(Line voltage)

Indoor Unit

1

2

B

Outdoor Unit

1

2

0

R.C. Address on the PCB: 0 (S2, BLK)

(0: Factory shipped state)

Ground

Inter-unit control wiring

(Low voltage)

RED

1

WHT

2

1

2

BLK 3 3

Remote controller

D

(Option)

U1

U2

R1

R2

R3

C

1

2

4

L1

L2

L3

N

A

Ground

L1

L2

L3

N

Power supply

380 - 415 V - 3 N 50 Hz

0499_M_I

4

Fig. 29

3

. Check power supply

Check that voltage is within the specified range (

±

10% of the rating).

Check that power is being supplied.

If the following troubleshooting must be done with power being supplied, be careful not to touch any uninsulated live part that can cause ELECTRIC

SHOCK.

4

. Check the lead wires and connectors in indoor and outdoor units.

Check that the sheath of lead wires is not damaged.

Check that the lead wires are firmly connected at the terminal plate.

Check that the wiring is correct.

SM830035

– 64 –

4. Service procedures

(2) General Troubleshooting Flow Chart: Diagnosis and Remedy

When you have found a major problem, such as refrigerant not flowing in the system or reduced air circulation, come to this section and find the box listing the problem.

Connected to the box are the main causes of the problem and their remedies. To find out which malfunction is happening in your case, check the remote controller for an Alarm

Message, and follow the steps in section 3).

(A) Cooling

a. Cooling

Poor cooling

Is setting temp.

suitable ?

Is cooling load too heavy ?

Change the setting temp.

Review cooling load estimate.

Refrigerant flow failure

Not enough air circulation

4-way valve is defective.

Refrigerant shortage

Electronic refrigerant control valve is defective.

Compressor is defective.

Service valves are not fully open.

Air filter is clogged.

Is fan speed set to LOW ?

Refrigerant tubes between indoor and outdoor units are not insulated.

Replace the 4-way valve.

Charge refrigerant gas.

Replace the valve.

Replace the compressor.

Open the valves fully.

Clean the filter.

Set the fan speed to either MEDIUM or HIGH.

Insulate wide and narrow tubes separately.

0458_M_I

4

SM830035

– 65 –

4. Service procedures

4

(B) Heating

b. Heating

Poor heating

Cold air is discharged.

Cold draft prevention is not working.

Refrigerant flow failure

Not enough air circulation

Is setting temp.

suitable ?

Is heating load too large ?

4-way valve is defective.

Refrigerant shortage

Electronic refrigerant control valve is defective.

Compressor is defective.

Service valves are not fully open.

Air filter is clogged.

Is fan speed set to LOW ?

Refrigerant tubes between indoor and outdoor units are not insulated.

4-way valve is defective.

“ STANDBY ” is displayed.

Indoor coil sensor E2 is defective.

Change the setting temp.

Review heating load estimate.

Replace the valve.

Charge with refrigerant.

Replace the valve.

Replace the compressor.

Open the valves fully.

Clean the filter.

Set the fan speed to either MEDIUM or HIGH.

Insulate wide and narrow tubes separately.

Replace the valve.

Replace indoor

P.C.B. Ass'y.

Replace the sensor.

0459_M_I

SM830035

– 66 –

4. Service procedures

(3) Meanings of alarm messages

If an error occurred in the air conditioner, the error condition is presented by indicating the error code in the wired remote controller display or by the combination of lamp statuses for operation, timer and heat stand-by (OFF status and flashing status).

Possible causes of troubles

Remote controller is detecting unusual signal from indoor unit.

Error receiving of serial communications signal.

Error transmitting of serial communications signal.

• Indoor unit is detecting unusual signal from the remote controller or group control.

(No serial communications signal)

Improper setting of indoor unit or remote controller.

Indoor unit is detecting unusual signal from signal option.

Indoor unit address setting is duplicated.

Remote controller address (RCU.ADR) is duplicated.

Error transmitting of serial communications signal

Error receiving of serial communications signal.

Improper setting of indoor unit or remote controller.

Indoor unit is detecting unusual signal from outdoor unit.

Outdoor unit is detecting unusual signal from indoor unit.

Auto. address setting is not correct.

When using flexible combination control, main indoor unit address E14 setting is duplicated. (judged by outdoor unit.)

Error receiving of serial communications signal.

Error transmitting of serial communications signal

Error receiving of serial communications signal.

(Confirmation error of unit numbers included)

E04

E05

E06

Error transmitting of serial communications signal.

E07

No. of judged indoor units or total capacity of indoor units is small.

E15

No. of judged indoor units or total capacity of indoor units is large.

E16

Indoor unit is detecting unusual signal from another indoor unit.

Improper setting of indoor unit or remote controller.

Error transmitting of serial communications signal

Error receiving of serial communications signal.

Indoor unit group address is not correct.

Indoor unit model setting is improper (capacity)

Improper wiring connections of ceiling panel.

Protective device in indoor unit is activated.

Thermal protector in indoor fan motor is activated.

Float switch is activated.

Protective device in outdoor unit is activated.

• Thermal protector in outdoor fan motor is activated.

• PC or AC Compressor thermal protector is activated.

• Power supply voltage is unusual. (The voltage is more than

260 V or less than 160 V between L and N phase.)

Discharge gas temperature of PC comp. is unusual.

High pressure switch is activated.

Negative phase or voltage drops.

Other indooor unit is warning.

E17

E18

L01

Model setting of indoor unit is not matching the outdoor unit.

L02

When using group control, main indoor unit address setting is duplicated.

(judged by indoor unit.)

L03

Outdoor unit address is duplicated.

Improper wiring between indoor units.

(There is a group connection wiring in case of individual control.)

L04

L07

L08

Indoor unit address (or group address) is not set.

Capacity code of indoor unit is not set.

Improper wiring of group control wiring.

L09

L11

L13

P09

P01

P10

P02

P03

P04

P05

P31

Wired remote controller display

Wireless remote controller display

E01

E02

Operation lamp flashes

E03

E08

E09

O

: Operation lamp v

: Timer lamp v

:Heat standby lamp

E10

E11

Heat stand-by lamp flashes v v

:Operation lamp

: Timer lamp

O

: Heat standby lamp

Operation lamp and heat standby lamp flash at the same time.

O

: Operation lamp v

: Timer lamp

O

: Heat standby lamp v

: Operation lamp

O

: Timer lamp

O

: Heat standby lamp

Operation lamp and heat stand-by lamp flash alternately.

O

: Operation lamp v

: Timer lamp

O

: Heat standby lamp

4

SM830035

– 67 –

4

4. Service procedures

Possible causes of troubles

Indoor thermistor is either open or short.

Outdoor thermistor is either open or short.

Indoor coil temp. (E1 = TH2) cannot be detected.

Indoor coil temp. (E2 = TH3) cannot be detected.

Indoor room temperature cannot be detected.

Discharge gas temp.A (PC compressor=TH0A) cannot be detected.

Outdoor coil liquid temp. (C1 = TH0E) cannot be detected.

Outdoor coil gas temp. (C2 = TH0C) cannot be detected.

Scroll protection thermostat

• Non volatile memory IC (EEPROM) is abnormal (Indoor control panel)

Wired remote controller display

F01

F02

F10

F04

F06

F07

F09

Wireless remote controller display

Operation lamp and heat stand-by lamp flash alternately.

O

: Operation lamp

O

: Timer lamp v

:Heat standby lamp

Protective device for compressor is activated.

PC compressor motor is overloaded.

PC compressor motor is locked.

F29

H01

H02

Compressor current detection circuit is defective.

Scroll proteiton thermostat

No detection of scroll protection thermostat

H03

H04

H05 v

:Operation lamp

O

: Timer lamp v

:Heat standby lamp

Low-pressure switch

H06

Power supply voltage between phases is unbalanced.

H17

Standard comp. contactor (Mg SW)is chattering.

H18

O

: flashes v

: OFF

– 68 –

SM830035

4. Service procedures

(4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y

If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to show the cause of the trouble, in addition to the Alarm message on the remote controller.

LED 2 on

P.C. board v

LED 1 on

P.C. board v

Remote controller

No message v V

Possible cause of trouble

Normal

E06, E07, L04

Outdoor unit serial communication signal is abnormal.

Outdoor unit address is duplicated.

v

V

* v

No message

P02

Other outdoor units are performing auto address and detecting refrigerant shortage.

FMo • CM thermal protection is in operation.

Power supply voltage is abnormal.

V

V

*

*

*

V

* v

V

*

Flash at the same time

P04, P05

F04~F09

H01, H02

H04, H05

E15, E16

High voltage SW activates

Negative phase protector activates.

Sensor is abnormal. (Open or short)

Abnormal compressor current value is detected.

Scroll thermal protection failure is detected.

Auto address failure

* *

Flash alternately

“SETTING” flashes.

Auto address is in operation.

NOTE v

: LED lamps OFF

V

: LED lamps ON (lights up)

*

: LED lamps ON (flashes)

LED 1

LED 2

0654_C_I

Fig. 30

* REFRIGERANT SHORTAGE

Note particularly that a shortage of refrigerant is only shown by the outdoor P.C.B.

Ass’y LEDs and the Alarm Message does not appear on the Indoor Remote Controller .

The compressor keeps running even when the refrigerant is less, so when you find the

LED indication on the outdoor P.C.B. Ass’y, stop the air conditioner immediately to avoid the compressor damage.

SM830035

– 69 –

4

4. Service procedures

(5) Symptoms and parts to inspect

1) Symptom: LCD on the remote controller does not display and remote controller does not operate.

Start

Is the LED (D80) on the indoor unit PCB lit?

Yes

No

Is there 12 V DC between R2 and R3 on the 8P terminal plate of the indoor unit?

Yes

No

Is there 12 V DC between 2 and 3 of the remote controller?

Yes

No

Repair the remote controller wiring.

Miswiring of power supply wires and indoor/outdoor control lines

Yes

Is there 220-240 V AC between U1 and U2 of the 8P terminal plate?

No

No

Is there 220-240 V AC between R and S of the indoor PCB?

Yes

Replace the remote controller.

Correct the wiring. Remove the socket connected to the OC plug on the

PCB and connect to the EMG plug instead.

Check and repair the power breaker etc.

4

Correct the connections

Replace the indoor unit power transformer.

No

Are the connections for the 4P connector for the indoor unit’s

PCB power transformer good?

Yes

No

Has the indoor unit PCB fuse blown?

Yes

No

Is there 15 V AC between 1 and 2 of the 4P connector for the indoor unit’s power transformer?

Yes

Is the primary side of the indoor power transformer shorted?

Yes

No

Is the 220-240 V AC circuit shorted?

No

Replace the indoor unit PCB.

Yes

Replace the indoor unit PCB.

Replace the indoor unit’s power transformer.

Replace or repair.

0332_M_I

SM830035

– 70 –

4. Service procedures

2) Symptom: LCD on the remote controller displays “CHECK E01”. (Unusual communication between remote controller and indoor unit.)

Start

Remote controller judges itself with self-diagnostic functions

OK

NG

Replace the remote controller.

Is there an open or a contact defect in the No. 1 line of the remote controller?

No

Yes

Correct the wiring.

Is there 200 -240 V AC between

U1 and U2 of 8 P terminal plate?

No

Yes

Mis-wiring between the power supply line and indoor/ outdoor unit operation lines.

Yes

Correct the wiring, and pull out the socket connected to the OC plug to replace with the EMG plug.

Is the indoor unit PCB’s non-volatile memory IC setting (“CHECK F29” displayed) wrong?

Yes

No

Correct the setting.

Is the indoor unit PCB’s inspection pin shorted?

Yes

No

Open the inspection pin.

Replace the indoor unit PCB.

3) Symptom: LCD on the remote controller displays “CHECK E02”. (Unusual communication between remote controller and indoor unit)

Start

0655_M_I

4

Is the No. 1 line wire (red) for the remote controller connected to another line (2 or 3) or are No. 1 and No. 3 (black) wired reversed?

No

Yes

Remote controller judges itself with self-diagnostic functions.

(To avoid misjudgment, always remove the No. 1 line of the remote controller wiring from the indoor unit terminal plate.)

OK

NG

Replace the indoor unit PCB.

– 71 –

Repair the wiring.

Replace the remote controller.

0334_M_I

SM830035

4. Service procedures

4) Symptom: LCD on the remote controller is displaying “CHECK E04”. (Unusual communication between the indoor and outdoor units.)

Start

Cut the breaker and remove the indoor/outdoor unit control lines connected to U1 and U2 of the indoor unit 8P terminal plate.

After shorting the test pin (CN2) on the indoor unit PCB, switch the breaker on. Does the LED

(red) on the PCB light up?

No

Yes

Is the contact good at the 2P connector for indoor serial communications on the outdoor unit PCB?

Yes

No

Replace the indoor unit PCB.

Correct the connections.

Cut the breaker, remove the indoor/outdoor unit control lines connected to U1 and U2 of the outdoor unit 8P terminal plate.

After shorting the test pin (CN11) on the outdoor unit PCB, switch the breaker on. Do the LEDs (red,

×

2) on the PCB flash?

No

Yes

Indoor/outdoor unit control lines are cut off

Correct the wiring.

Is the contact good at the 2P connector for indoor serial communications on the outdoor unit PCB?

No

Replace the indoor unit PCB.

Correct the connections.

0335_M_I

4

5) Symptom: LCD on the remote controller is displaying “CHECK E05”. (Unusual communication between the indoor and outdoor units)

Start

Indoor unit PCB transmission/ reception circuit defect

Replace the indoor unit PCB.

0336_M_I

SM830035

– 72 –

4. Service procedures

6) Symptom: LCD on the remote controller is displaying “CHECK E06”. (Unusual communication between the indoor and outdoor units)

Start

Is the setting for the indoor address on the indoor unit PCB inappropriate?

Yes

No

Yes

Is there a cut line or contact defect between an indoor and outdoor unit’s control line?

No

Correct the setting.

Correct wiring.

0337_M_I

Influenced by external noise

* See the section of INSTALLATION INSTRUCTION concerning with flexible combination system.

7) Symptom: LCD on the remote controller is displaying “CHECK E08”. (Duplicate indoor unit address setting)

Start

Is the setting for the non-volatile memory IC on the indoor unit PCB inappropriate? If the setting is appropriate, “F29” is displayed.

(Are there two units with the same address?)

No

Yes

Correct the setting.

Influenced by external noise

0338_M_I

* See the section of INSTALLATION INSTRUCTION concerning with flexible combination system.

8) Symptom: LCD on the remote controller is displaying “CHECK E09”. (Duplicate setting of RCU address switch of remote controllers)

Start

Are there two remote controllers

(master-slave) installed with both remote controllers set as masters?

No

Yes

Correct the setting.

*

Replace the remote controller.

0339_M_I

* See the section of INSTALLATION INSTRUCTION concerning with controlling remote controller switches when there are two remote controllers.

SM830035

– 73 –

4

4. Service procedures

9) Symptom: LCD on the remote controller displays “CHECK P01”. (Indoor fan protection thermostat operation warning)

Start

4

Yes

Is there 220-240 V AC between S4 and T20-3 on the indoor unit PCB?

No

Is there 220-240 V AC between

T20-3 and S4 after T20-1 and T20-3 on the indoor unit PCB shorted?

Yes

No

Is the indoor fan wire winding protection thermostat (49FI) off?

Yes

No

Correct the connection

Replace the indoor fan.

Replace the indoor unit PCB.

10) Symptom: LCD on the remote controller displays “CHECK P10”. (Indoor float switch operation warning)

0340_M_I

Start

Is there 12 V DC between FS-1 and FS-3 on the indoor unit PCB?

Yes

No

No

Is the float switch off?

Yes

Replace the indoor unit PCB.

Correct the connection

• Drain pump defect

• Clogged drain

0341_M_I

– 74 –

SM830035

4. Service procedures

11) Symptom: LCD on the remote controller displays “CHECK P02”. (Compressor / outdoor fan protection thermostat operation warning / power supply voltage abnormality)

Start

Is the power supply to the outdoor unit normal?

(Voltage / defective phase?)

No

Yes

Is the fuse on the outdoor unit

PCB blown (F1 and F2)?

No

Yes

Yes

Is the high voltage switch

(63 PH) off?

No

Is there 220-240 V AC between

CN19-9 and CN19-1 on the outdoor unit PCB?

No

Yes

Check the power breaker etc. and repair.

Replace the fuse.

Replace the outdoor unit PCB.

Replace the outdoor unit PCB.

Is the outdoor fan wire winding protection thermostat (49FO) off?

Yes

No

Replace the outdoor fan.

Is the compressor protection thermostat (49C) off except 48 type?

Yes

No

• No refrigerant

• High load

• 4-way valve defect

• Clogged refrigerant circuit

• Electronic refrigerant control valve

defect (indoor unit)

Is there connector contact defect?

No

Yes

Replace the outdoor unit PCB.

Correct the connection

0342_M_I

4

SM830035

– 75 –

4. Service procedures

12) Symptoms: LCD on the remote controller displays “CHECK P03”.

(Alarm for unusual discharge temp. of compressor)

Start

Unusual discharge gas temperature

• Refrigerant shortage

• Clogged refrigerant circuit

• Electronic refrigerant control valve defect (indoor unit)

0343_M_I

13) Symptom: LCD on the remote controller displays “CHECK P04”. (High-pressure switch activation warning)

Start

4

The system does not operate again.

Yes

No

High-pressure switch activation

(Both cooling and heating)

• Electronic refrigerant control valve defect

• Refrigerant over-charged

(Cooling)

• Outdoor unit, heat exchanger dirty, clogged

• Outdoor unit air short

• Outdoor fan stopped

(Heating)

• Outdoor unit air short

• Indoor unit, heat exchanger dirty, clogged

• Large pipe side service valve closed

• Indoor fan stop

• Air filter clogged

Are there connection defects in the wiring?

No

Yes

High-pressure switch defect

Repair the wiring.

0344_M_I

SM830035

– 76 –

4. Service procedures

14) Symptom: LCD on the remote controller displays “CHECK P05”. (Negative phase detection operation warning)

Start

Is the power supply to the outdoor unit normal?

(Voltage defective phase?)

Yes

No

Does the outdoor unit operate when two of the three phases are changed?

(Actuation of negative phase protector)

No

Yes

Is the fuse (F1, F2) on the indoor unit PCB blown?

No

Yes

Is there a contact defect in the

3P connector?

No

Yes

Check the power breaker etc. and repair

No problem

Replace the fuse.

Correct the connection

Replace the outdoor PCB

0345_M_I

15) Symptom: LCD on the remote controller displays “CHECK E15”.

Start

When the group of the units are installed, is there any mis-cross between interunit control wiring and refrigerant tubing?

No

Yes

Are the total capacities of indoor units to that of outdoor units less than 93%?

No

Yes

Repair the wiring.

Select an indoor unit which matches with the outdoor capacity.

Are there no contact failure between outdoor and indoor units?

Yes

No

Perform the same as “CHECK E04”.

Check the contact.

0646_M_S

4

SM830035

– 77 –

4. Service procedures

16) Symptom: LCD on the remote controller displays “CHECK E16”.

Start

When the group of the units are installed, is there any mis-cross between inter unit control wiring and refrigerant tubing?

Yes

No

Are the total capacities of indoor units to that of outdoor units more than 107%?

Yes

No

Repair the wiring.

Select indoor units which match with the outdoor capacity.

Confirm less than 5 indoor units are connected.

No

0647_M_S

17) Symptom: LCD on the remote controller displays “CHECK L13”.

Start

When the group of the units are installed, is there any mis-cross between inter unit control wiring and refrigerant tubing?

Yes

No

Repair the wiring.

4

Check the capacity of the indoor unit by remote controller.

See Test Run Manual.

18) “Check P9” is displayed on the remote control unit.

0648_M_S

Start

Is 15P connector socket (RED) being attached to panel connected firmly with 15P plug?

Yes

Yes

Replace P.C.B. Ass’y in the indoor unit.

Connect firmly.

0649_M_S

SM830035

– 78 –

4. Service procedures

19) Symptom: LCD on the remote controller displays “CHECK H01, H02, H03”. (PC compressor current detection)

* Please check the related part described in the following chart after confirming the code setting (S4) of the outdoor unit’s capacity on the PCB in the outdoor unit.

Start

“CHECK H01” display

Compressor overload detection

“CHECK H02” display

Compressor lock detection

“CHECK H03” display

Compressor current detection circuit defect

• Insufficient voltage

• Comp. motor magnetic contactor

defect

• Refrigerant over-charged

Compressor lock

• L3 phase wire disconnected

• Comp. motor magnetic contactor

defect

• Outdoor unit PCB defect

0346_M_I

20) Check the indoor unit (When the alarm of communication failure is not activated)

If the electronic control valve failure occurred in Flexible Combination system

(simultaneous operation system), one indoor unit would not be operated normally, then the other units won’t be operated either. Due to this, try to detect the troubled unit and correct it.

Operate the unit in cooling mode.

(30 minutes after its operation)

• Cooled air comes out.

• Is the temperature of each indoor coil sensor almost

the same? (Refer to the sensor temperature

display function of the remote controller.)

No

• Does each indoor coil sensor detect the temperature

correctly? (Is there any leakage from the pipe of the

temperature detection section?)

No

Replace the sensor.

Yes

Normal

Yes

Failure in the electronic control valve activation.

0460_M_I

4

SM830035

– 79 –

4

4. Service procedures

(6) Procedures When a Specific Component Does Not Work

1) Indoor fan does not operate.

No

Is fan motor capacitor normal ?

Yes

Replace the capacitor.

Is there voltage output of P.C.B. Ass'y for fan motor ?

Yes

No

Replace the P.C.B. Ass'y in the indoor unit.

• Check resistance of

fan motor winding.

Out

Replace the fan motor.

0650_M_S

– 80 –

SM830035

2) Compressor motor does not operate.

Does compressor motor magnetic contactor (52C) actuate ?

Yes

No

Check resistance of compressor motor winding.

NG

Replace the compressor.

3) Outdoor fan does not operate.

Are auxiliary relays (1Y, 2Y) normal ?

Yes

No

Is fan motor capacitor normal ?

Yes

No

Is there voltage output of

P.C.B. Ass’y for fan motor ?

Yes

No

Check resistance of fan motor winding.

NG

Replace the fan motor.

4. Service procedures

Replace the compressor motor magnetic contactor.

Replace the relays.

0461_M_I

Replace the capacitor.

Replace P.C.B. Ass’y in the outdoor unit.

0462_M_I

4

SM830035

– 81 –

4. Service procedures

(7) Service Functions of Remote Controller

From the remote controller you can control both the operation and settings of the unit as well as perform several useful service checks. This section explains how to use the remote controller on the following items from (A) to (J).

(A) Set service check switches.

(B) Use the test run procedure.

(C) Check the sensor temperature readings.

(D) Find out about past service problems.

(E) Check the remote controller itself for correct operation.

(F) Excute the auto. address operation.

(G) Confirm and change the indoor unit address.

(H) Change the shift temperature in heating mode

( I ) Set the indoor unit address.

(A) Set service check switches

The service check switch (RCU.CK) is located on the back of the remote controller’s

P.C.B. Ass’y as follows :

4

0354_M_I

The followings are the correct switch settings for ordinary use of the unit. Only change the settings temporarily for making service checks. When you finish the settings, be sure to

return them to the standard settings shown here.

RCU.CK switch - Refer to section (E)Checking the remote controller for

correct operation

(Remote Control Unit, Check)

RCU.ADR switch - Keep the switch OFF all the time except in case of sub remote controller

(Remote Control Unit, Address)

SM830035

– 82 –

4. Service procedures

(B) Use the test run procedure

The purpose of the test run function is to let you control the operation of the unit directly without turning the unit on or off by thermostat. As indicated in the following procedure, be sure to stop test run operation when you finish the procedure, or the air conditioner may be damaged.

To protect the air conditioner from overloading, the outdoor unit will not start running for 3 minutes after power is applied or the unit is turned OFF.

a

Press the TEST / CHK button at the bottom right on the remote controller.

b

Press the ON / OFF operation button to start the test run.

c

Press the MODE button to select either COOLING or HEATING mode.

d

When the test run starts, “TEST” shows on the remote controller’s display.

e

During the test run, the air conditioner runs continuously and the thermostat does not control the system.

f

After the test run, be sure to press the

TEST / CHK button once again to finish this mode and make sure “TEST” is not shown on the display.

AIR FLOW

UNIT

FLAP

TIMER SET

SET CL

A

°

C

TEST

ON

OFF

MODE

SET TEMP.

FAN SPEED

TEST / CHK

Alarm message

TEST RUN / CHECK button

ON / OFF operation button

0355_M_I

4

CAUTION

The TEST RUN button is used only for servicing the air conditioner. Do not press this button in normal operation, or the system may be damaged.

SM830035

– 83 –

4. Service procedures

(C) Check the sensor temperature readings

The air conditioner has thermo sensors which are used to control the unit.

Each sensor has an address which is made up of the indoor unit address, and the sensor address. The indoor unit address is used only when several units are hooked up to one remote controller (group control). If there is only one unit, made up of one indoor and one outdoor unit, then only the sensor address should be put in, as shown in the procedure below.

Follow this procedure to display the temperature of each sensor: a

On the remote controller, press both TEST / CHK and CL buttons at the same time for more than 4 seconds.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

A

R.C.

AIM

No.

CODE No.

°

C

SWEEP

SET TEMP.

SETTING

MODE

SET TEMP.

FAN SPEED

SET CL

ON

OFF

TEST / CHK

4

0356_M_I

b

The UNIT No., the address and temperature of the sensors instead of its usual information will flash on the display.

Following example shows the UNIT No. (Indoor unit address) is fixed at 01– 01.

In case of group control, select the UNIT NO. (Indoor unit address) which you want to check with UNIT button.

Each time you press the , (SET TEMP.) button you can select a different sensor, and the display shows the sensor address and temperature as shown below.

UNIT No. (Indoor unit address)

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

MODE

SET TEMP.

Sensor address

Sensor temperature

°

C

FAN SPEED

SETTING

DATA

MONITOR

SET CL

ON

OFF

TEST / CHK

0357_M_I

NOTE

Do not press TIMER SET button during the procedure.

SM830035

– 84 –

4. Service procedures

Refer to the table below for the relationship between the sensor address and the location of the sensor.

Relationship between the sensor address and the location of sensor

Sensor Address

(CODE No.)

Location of Sensor (Themistor)

Indoor Unit 01 —

02 TH1 Indoor air suction Temp.

03 TH2 Indoor coil Temp. (E1)

04 TH3 Indoor coil Temp. (E2)

05 —

Outdoor Unit 06

07

08

09 —

0A TH0A Discharge gas Temp. A

0B TH0B Scroll protection thermostat

0C —

0D TH0D Outdoor coil liquid Temp. (C2)

0E TH0E Outdoor coil liquid Temp. (C1)

0F

10

11

12

13

14

NOTE

In case there are no sensor equipped with the unit, “- - -” is shown on the display.

C

Resetting the remote controller display to previous mode.

To reset the display, press TEST / CHK button, then the remote controller will return to previous mode.

(D) Find out about past service problems

The remote controller can memorize the max. 4 most recent alarm messages, so you can see problems the unit has had, if any. Knowing what has already occurred and been fixed helps you to know what to check at present.

This function is usable even if the unit is not working.

To display the past error codes, follow the procedure below.

Procedure: a

On the remote controller, press both TEST / CHK and SET buttons at the same time for more than 4 seconds.

b

Once in this mode, display changes from the normal display to service check display as shown in the table below:

NORMAL DISPLAY

Set temp.

UNIT No.

Hours, Minutes

Display Change

(

È

)

È

È

È

SERVICE CHECK DISPLAY

Code No.

UNIT No. (Indoor unit address)

Alarm Message

– 85 –

SM830035

4

4. Service procedures

This picture shows the service check display.

UNIT No.

UNIT No.

1–1

No.

Refrigerant

Circuit No.

R.C.

No.

CODE No.

CODE No.

4

CHECK

Alarm message

SERVICE

0358_M_I

c

. A maximum of 4 alarm messages can be accessed by pressing either SET TEMP button or as follows.

MODE

Past

NOTE

Pressing CL (Clear) button will clear all

the service history.

SET TEMP.

Present

Present

... accessed in order of “Past

È

Present”.

... accessed in order of “Present

È

Past”.

Past

FAN SPEED

0359_M_I

For example, if the last four alarm messages were, in order of occurrence from oldest to most recent, P01, P02, P04, and most recently E01, then the display will be shown as below when you press button four times. The 5th time you press button you can repeat the display, then the first message will be shown again.

1 2 3 4

UNIT No.

R.C.

No.

CODE No.

UNIT No.

R.C.

No.

CODE No.

UNIT No.

R.C.

No.

CODE No.

UNIT No.

R.C.

No.

CODE No.

CHECK

SERVICE

CHECK

SERVICE

CHECK

SERVICE

CHECK

SERVICE

If there are no alarm messages, the display shows:

Alarm message

UNIT No.

R.C.

No.

CODE No.

CHECK

SERVICE

– 86 –

0360_M_I

SM830035

4. Service procedures

Important

Never press CL (clear) button unless you want to erase the accessed data in memory.

Follow the procedure below only when erasing is necessary.

To erase accessed data, press the CL button.

When erasing is finished,“----” mark appears on the controller’s display.

CAUTION

After checking the alarm messages, be sure to press the TEST / CHK button.

(E) Check the remote controller itself for correct operation

The remote controller has a self-diagnostic function to check if it works properly. Use this procedure to find out if the remote controller itself is in trouble.

a

Turn ON the RCU.CK switch on the back of the P.C.B. Ass’y in the remote controller.

See section (A) for exact location.

b

The appearance of the display will tell you whether or not the remote controller is working correctly or not.

Normal condition – All displays appear for 10 seconds, then disappear.

Unusual condition – All displays flash ON and OFF for 10 seconds, then disappear.

CAUTION

After checking the panel, be sure to set the RCU.CK switch to this original OFF position.

4

– 87 –

SM830035

4. Service procedures

(F) Execute the auto. address operation

Auto. address operation is executed by pressing the A. ADD (S1) button of outdoor unit’s PCB usually.

For your convenience it can be executed by remote controller also.

a

Press the TEST / CHK and ( ) buttons at the same time for more than 4 seconds.

b

Set CODE No. A1 with , (SET TEMP) button.

In this mode, the auto. address operation is executed at each R.C.

(Refrigerant Circuit) line one by one.

AIR FLOW

UNIT

FLAP

TIMER SET

R.C.

CODE No.

SETTING

MODE

SET TEMP.

FAN SPEED

SET CL

ON

OFF

TEST / CHK

0361_M_I

4

c

Select R.C. No. which you want to execute the auto. address operation with UNIT button.

d

Press the SET button. The auto. address operation will start. CODE No. changes from flashing to ON state.

e

If an error occurs during operation, the alarm message will be displayed. Check and remove the cause. If you want to stop the operation, press the CL button then the unit stands in waiting mode (Press the SET button again.) f

If the automatic address operation finishes, the display will disappear.

g

Execute the operation of the other R.C. line in the same way by following the above steps c

to d

.

h

Complete the automatic address operation by pressing the TEST / CHK button.

– 88 –

SM830035

4. Service procedures

(G) Confirm and change the indoor unit address

The purpose of the above function is to let you confirm the indoor unit address after the auto. address operation, and change the indoor unit address if it is needed.

a

Press the TEST / CHK and ( ) buttons at the same time for more than 4 seconds.

AIR FLOW

UNIT

FLAP

TIMER SET

R.C.

MODE

CODE No.

SET TEMP.

SETTING

SET DATA

FAN SPEED

SET CL

ON

OFF

TEST / CHK

0362_M_I

b

Select the R.C. No. which you want to change with the UNIT (up) or

FLAP (down) buttons.

c

Press the SET button (to confirm the R.C. No.).

The smallest registered indoor No. and the selected R.C. No. will be displayed.

Ex:

R.C. No. 3 is selected.

AIR FLOW

UNIT

UNIT No.

MODE

Indoor No. 2 is the smallest indoor No. of the R.C. No. 3.

R.C.

No.

FLAP

SET TEMP.

CODE No.

TIMER SET

FAN SPEED

SETTING

SET DATA

SET CL

ON

OFF

TEST / CHK

4

0363_M_I

d

Select the indoor No. which you want to change with UNIT button. Once in this mode,

the fan motor of selected indoor unit will turn on and let you confirm the indoor unit address.

SM830035

– 89 –

4

4. Service procedures

e

Set the required new indoor unit’s No. by pressing the , ( ) button.

AIR FLOW

UNIT

FLAP

TIMER SET

R.C.

No.

CODE No.

SETTING

SET DATA

SET CL

ON

OFF

MODE

SET TEMP.

FAN SPEED

TEST / CHK

Ex: UNIT No. 3-6: currently registered indoor unit address

Required new indoor No.8: SET DATA

*

In this case, UNIT No. 3 – 6 (current)

3 – 8 (NEW : after pressing the

TEST / CHK button)

0364_M_I

f

Press the SET button.

UNIT No, SET DATA (0008) and

SETTING

changes from flashing to ON state.

g

If you made a mistake, press the CL button.

h

Finally, press the TEST / CHK button.

i

If you want to change the indoor unit address of the other R.C. No., follow the step a to h

in the same way.

– 90 –

SM830035

4. Service procedures

(H) Change the shift temperature in heating mode

If the indoor unit is installed at high location (ex. ceiling level), the thermostat tends to turn off at heating mode because of the hot air temperature around ceiling level. In order to solve the problem, the shift temp. (valid while heating only) is set when shipped from factory.

If the shift temp. is not enough (ex. the indoor unit is installed at position higher than 3 m), the shift temp. can be set with remote controller from +1 to +10 deg. manually as follows: a

Press the TEST / CHK button for more than 4 seconds.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

MODE

SET TEMP.

SETTING

SET DATA

FAN SPEED

SET CL

ON

OFF

TEST / CHK

0365_M_I

b

In case of group control, if you want to change all units in group control collectively, proceed next step remaining ALL displayed.

If you want to change a unit individually, select the indoor unit address (UNIT No.) with

UNIT button.

c

Select the CODE No. 06 with , (SET TEMP) button.

d

Choose the shift temp with , ( ) button.

EX:

UNIT No. 1–6

CODE No. 06

Shift temp. +5 deg

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

MODE

SET TEMP.

SET TEMP.

SETTING

SET DATA

FAN SPEED

SET CL

ON

OFF

TEST / CHK

4

0366_M_I

e

Press the SET button.

CODE No. 06, SET DATA and

SETTING

change from flashing to ON state.

f

If you made a mistake, press the CL button.

g

Finally, press the TEST / CHK button.

– 91 –

SM830035

4. Service procedures

( I ) Set the indoor unit address

This function is usable if the auto. address operation is not available.

Indoor unit address can be set one by one by remote controller in such case.

NOTE

1) In case of group control, branch wiring for group control should be removed temporarily.

2) In case of remote controllerless system, remote controller should be connected with the indoor unit temporarily.

a

Short the two terminals of DISP PIN on indoor unit PCB.

(DISP PIN : Refer to P. VI–2) b

Press the TEST / CHK , SET and CL buttons at the same time for more than 4 seconds.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

SETTING

SET DATA

SET CL

ON

OFF

MODE

SET TEMP.

FAN SPEED

TEST / CHK

0367_M_I

4

c

Set the CODE No. 12 to set the No. of R. C. with the , (SET TEMP) button.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

SETTING

SET DATA

SET CL

ON

OFF

MODE

SET TEMP.

FAN SPEED

TEST / CHK

0368_M_I

SM830035

– 92 –

4. Service procedures

d

Set the No. of R. C. which you want to set with , ( ) button.

Ex. No. of R. C. will be set 2.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

SETTING

SET DATA

SET CL

ON

OFF

MODE

SET TEMP.

FAN SPEED

TEST / CHK

0369_M_I

e

Press the SET button.

UNIT No., CODE No. 12,

SETTING

and SET DATA (0002) change from flashing to ON state.

f

Select the CODE No. 13 to set the indoor unit No. with the , (SET TEMP) button.

g

Set the indoor unit No. which you want to set with the , ( ) button.

Ex. Indoor unit No. 4 will be set.

In this example, indoor unit address

(UNIT No.) will be set 2–4.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

MODE

SET TEMP.

SETTING

SET DATA

FAN SPEED

SET CL

ON

OFF

TEST / CHK

0370_M_I

h

Press the SET button.

UNIT No., CODE No. 13,

SETTING

and SET DATA (0004) change from flashing to ON state.

4

– 93 –

SM830035

4

4. Service procedures

i

Select the code No. 14 to set group setting with the , (SET TEMP) button.

j

Set the No. of group setting as shown below with the , ( ) button.

AIR FLOW

UNIT

FLAP

TIMER SET

UNIT No.

R.C.

No.

CODE No.

MODE

SET TEMP.

SETTING

SET DATA

FAN SPEED

SET CL

ON

OFF

TEST / CHK

Nos. of group setting.

0 : Standard system (except group control)

1 : Main indoor unit in case of group control

2 : Sub indoor unit in case of group control

99: No setting (at factory shipment)

0371_M_I

k

Press the SET button.

UNIT No., CODE No. 14,

SETTING

and SET DATA change from flashing to ON state.

l

If you made a mistake, press the CL button so that setting returns to the initial state.

m

Press the TEST / CHK button to finish this mode.

The display is disappeared.

n

Confirm the indoor unit address (UNIT No.) with the UNIT button after pressing the ON

/ OFF button.

o

Finally, remove the short circuit of DISP PIN.

And in case of group control, be sure to restore the branch wiring to its original wiring.

In case of remote controller–less system, remove the remote controller.

– 94 –

SM830035

4-2 Checking the Electrical Components

(1) Measurement of Insulation

Resistance

• The insulation is in good condition if the resistance exceeds 1 M

.

1

Power Supply Wires

Clamp the earthed wire of the Power Supply wires with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires.

(Fig. 39)

Then measure the resistance between the earthed wire and the other power wire. (Fig. 39)

2

Indoor Unit

Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on high voltage terminal on the terminal plate (Fig. 40)

See Fig. 28.

3

Outdoor Unit (SPW-C253GH5)

Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on

1

and then

2

on the 8 or 6P terminal plate.

(Fig. 40)

See Fig. 28.

3

Outdoor Unit (SPW-C253GH8,

SPW-C363GH8, SPW-C483GH8)

Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on

5

and then

6

, and then

7

on the 8P terminal plate. (Fig. 40)

See Fig. 29.

Probe

Clip

Copper tube or metallic part

Clip

Earthed wire

Insulation tester

0638_X_S

Fig. 39

Terminal plate

Probe

Insulation tester

0639_X_S

Fig. 40

4

SM830035

– 95 –

4

4. Service procedures

4

Measurement of Insulation

Resistance for Electrical parts

• Disconnect the connector of the desired electric part from terminal plate, P.C.B.

Ass’y, etc. (Fig. 42)

• Similary, disconnect the lead wires from compressor, capacitor, etc. (Fig. 43)

• Measure the resistance in the same manner as illustrated on the right.

Refer to Electrical Wiring Diagram.

NOTE

If the probe does not enter the hole because the hole is too narrow, use a probe with a thinner pin.

Metallic part

Clip

Clip

Copper tube or metallic part

Probe

Insulation tester

From fan motor, compressor and other parts.

Probe

0640_X_S

Fig. 42

Insulation tester

0641_X_S

Fig. 43

– 96 –

SM830035

(2) Checking the Protective Devices

• Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device.

• Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 44.

• Normality of the protective device can be judged by the following table.

The Protective Device is proved normal if there is a continuity between terminals.

socket

Multimeter

0642_X_S

Fig. 44

1

Indoor fan motor thermal protector (49FI) . . . . . . Indoor unit

• Disconnect 9P connector (WHT) which leads to the indoor fan motor (FMI).

• Check the socket’s terminals between No. 8 (GRY lead wire) and No. 9

(GRY lead wire).

2

Compressor motor thermal protector (49C) . . . . . . Outdoor unit

• Only for the SPW-C253GH8 and SPW-C363GH8. Disconnect the 8P connector (white), and the 9P connector (white) on the P.C. board, and check 8P (white) plug’s No. 4 (GRY lead wire) and socket’s No. 9 (GRY lead wire) on the P.C.board.

3

Outdoor fan motor thermal protector (49FO) . . . . . . Outdoor unit

• Disconnect 8P connector(s) (WHT) which lead(s) to the outdoor fan motor

(FMO).

• Check socket’s terminal between No. 3 (GRY lead wire) and No.4 (GRY lead wire).

4

High pressure switch (63PH) . . . . . . Outdoor unit

• Disconnect the socket (63PH) of 3P (red) connecting to the P.C. board, and check both sides (1 (white), 3 (red)).

4

SM830035

– 97 –

4. Service procedures

4

(3) Checking the Electrical Parts

1

Power transformer (TR1) ................. Indoor unit

*Measure the coil resistance.

• Primary ; Measure the resistance between No.1 and No.3

(WHT lead wires) terminals of 3P (WHT) socket connected to power transformer.

• Secondary 14V ; Measure the resistance between No.1 and No.2

(RED lead wires).

10V ; Measure the resistance between No.3 and No.4

(BRN lead wires).

Refer to “1-3 Other component specifications”.

2

Power transformer (TR2) ............ Outdoor unit

*Measure the coil resistance.

• Primary ; Measure the resistance between No.1 and No.3

(WHT lead wires) terminals of 3P(WHT) socket jointed to power transformer.

• Secondary 14 V ; Measure the resistance between No.1 and No.2

(BRN lead wires).

Refer to “1-3 Other component specifications”.

3

Indoor fan motor (FMI) ............... Indoor unit

*Measure the coil resistance.

• Measure the resistance between each terminal of 9P (WHT) socket connected to the indoor fan motor.

Refer to “1–2–(A) Major component specifications”.

4

Outdoor fan motor (FMO) ........... Outdoor unit *Measure the coil resistance.

• Measure the resistance in the same manner as explained above

3

.

Refer to “1–2–(B)Major component specifications”.

5

Fan motor capacitor ............ Both in indoor and outdoor unit

• Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. 45. Observe the deflection of the pointer, setting the resistance measuring range of the multimeter to the maximum value.

• The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its original position.

Multimeter

NOTE

The range of deflection and the deflection time differ according to the capacity of the capacitor.

Fig. 45

Fan motor

Capacitor

0643_X_S

SM830035

– 98 –

6

Solenoid coil of the electronic refrigerant

control valve (ERCV) ………… Indoor unit

*Measure the coil resistance.

• Measure the resistance between No. 5 (GRY lead wire) and other terminals

(another color of lead wires) of 5P (WHT) plug connected to the solenoid coil.

Refer to “1-2-(A) Major component specifications”.

7

Compressor motor (CM) ……… Outdoor unit

In case of triple -phase compressor

*Measure the coil resistance.

Measure the resistance between “R” (RED lead wire) and “S” (WHT lead wire) terminals, “R” and “T” (BLU lead wire) terminals and “S” and “T” terminals on the compressor motor magnetic contactor.

In case of single -phase compressor

Remove the cover of compressor terminal and measure the resistance between terminals.

Refer to “1-2 Major component specifications”.

8

Compressor motor magnetic contactor (52C) ………… Outdoor unit

• Measure the resistance between A (ORG lead wire) and B (GRY lead wire) terminals on the compressor motor magnetic contactor.

Refer to “1-3 Other component specifications”.

• Check the continuity between contactors.

MODEL

FMCA–1S

Pair of terminals

Push button on the magnetic contactor

R – U S – V T – W 31 – 32 no press

–––– –––– –––– YES press

YES YES YES ––––

9

Solenoid coil of 4-way valve (20S) … Outdoor unit

*Measure the coil resistance.

• Measure the resistance between No.1 (BLU lead wire) and No.2 (BLU lead wire) terminals of 2P (YEL) socket connected to the solenoid coil.

Refer “1-3 Other component specifications”.

4

SM830035

– 99 –

4

4. Service procedures

0

Fuse on indoor and outdoor P.C.B. Ass’y …. Both in indoor and outdoor unit

*Check the continuity.

• Remove the P.C.B. Ass’y from the electrical component box. Then pull out the fuse from the P.C.B. Ass’y. (Fig. 46)

Fuses

Fuses

Indoor P.C.B. Ass’y

0644_X_S

Outdoor P.C.B. Ass’y

0653_X_S

Fig. 46

• Then check the continuity of the fuse by using the multimeter. (Fig.47)

Fuse

0645_X_S

Fig. 47

– 100 –

SM830035

(4) Sensor and Solenoid Layout Diagram

Indoor Unit

• SPW-U253GH56

• SPW-U363GH56

• SPW-U483GH56

TH3 (E2), (BLK)

TH2 (E1), (RED)

TH3 (E2), (BLK)

TH4 (E3), (BRN)

TH2 (E1), (RED)

TH4 (E3), (BRN)

Electronic refrigerant control valve (ERCV)

Electronic refrigerant control valve (ERCV)

0479_U_I

Outdoor Unit

• SPW-C253GH5, SPW-C253GH8

0478_U_I

TH6, 7, 8

20S, 63PH

CM

CH

TH8 (GRN)

( Discharge gas)

0582_C_S

20S

TH6 (C1), (BLK)

TH7 (C2), (RED)

4

0583_C_S

SM830035

– 101 –

4. Service procedures

• SPW-C363GH8

TH6, 7, 8

TH7 (C2), (RED)

4

• SPW-C483GH8

20S

CM

CH

63PH

TH8 (GRN)

( Discharge gas)

TH6 (C1), (BLK)

0584_C_S

TH6, 7, 8

20S

CM

CH

63PH

TH8 (GRN)

( Discharge gas)

0586_C_S

TH6 (C1), (BLK)

– 102 –

TH7 (C2), (RED)

0585_C_S

0585_C_S

SM830035

(5) Thermistor Characteristic Curve

5

4

7

6

10

9

8

3

2

1

(1) Room temp. sensor : TH1 (KTEC-35) (2) Indoor heat exch.

coil sensor : TH2(E1), TH3(E2),

TH4(E3)

Outdoor heat exch. coil sensor : TH6(C1), TH7(C2)

40

( PBC-41E)

35

30

15

10

5

0

–20 –15 –10 –5 0 5

Temperature (

°

C)

10

10 15 20 25 30 35 40

Temperature (

°

C)

0374_M_I

25

20

15 20

0375_M_I

(3) Compressor discharge gas temp. sensor : TH8 (PTC-51H)

7

6

5

4

3

2

1

80 90 100 110

Temperature (

°

C)

120 130

0376_M_I

– 103 –

SM830035

4

4. Service procedures

4

(6) PCB Setting

Setting of outdoor control PCB

(A) Standard control (single outdoor unit)

In case of single outdoor unit installation, no indoor unit’s setting is necessary for twin, triple or quartet types (2, 3 or 4 indoor units).

Keep R.C. address setting at “0” as factory shipment state.

In this case, auto. address operation is performed automatically for the first time when the power is switched on. This operation takes about a few minutes.

(B) Group control (Multiple outdoor units)

In case of group control (up to 8 indoor units can be connected with one remote controller), before turning on the power supply, set the R.C. address with S2, S3 on the outdoor control PCB.

R.C. address: Refrigerant circuit address 1 ~ 30.

Regarding the example of R.C. address for group control, please refer to R.C.

Address Setting Method.

(C) Central control (when using the system controller)

In case of central control (when using the system controller,that is, when linking outdoor units in a network),

(a) Before turning the power supply on, set the R.C. address with S2, S3 on the outdoor control PCB.

(b) Remove the short plug (CN4, 2P

Black) from all outdoor units except one outdoor unit.

Regarding the example of R.C. address for central control and the position of

CN4, please refer to R.C. Address

Setting Method.

Setting of indoor control PCB

No setting is necessary.

Each indoor unit address (UNIT No.: R.C. – No.) is decided after auto. address operation.

Indoor unit No.

Refrigerant Circuit No. (R.C. address)

Manual setting for indoor unit address can be performed also by remote controller.

SM830035

– 104 –

(7) R.C. Address Setting Method

Outdoor unit R.C. address setting method

In case of group control or central control, set the R.C. address to 1, 2, 3, ... according to the

No. of outdoor units.

Outdoor control PCB

CN4 (2P Black)

Refrigerant circuit address

(factory setting = 0)

Refrigerant circuit address (black)

0

: S2

Refrigerant circuit address

(2P DIP switch, green or Blue)

10 20 position position

ON ON side

: S3

1 2

OFF side

A. ADD (S1):

Automatic address setting start button

Used for central control (link system) and group control (Normally, not used)

0515_C_I

R.C. address

R.C. address

(S3: 2P dip switch, green or Blue)

ON ON side

00 auto address

(“0” when shipped from factory)

Both OFF

1

ON

2

OFF side

ON side

02 (In case of No. 2 outdoor unit) Both OFF

1

ON

2

OFF side

ON side

03 (In case of No. 3 outdoor unit) Both OFF

1

ON

2

OFF side

ON side

11 (In case of No. 11 outdoor unit) 10’s SW is ON

1

ON

2

OFF side

ON side

21 (In case of No. 21 outdoor unit) 20’s SW is ON

30 (In case of No. 30 outdoor unit)

Both 10’s and 20’s switches are ON

1

ON

2

OFF side

ON side

1 2

OFF side

R.C. address

(S2: Rotary switch, Black)

0

Set to 0

0

1

1

2

Set to 2

Set to 3

Set to 1

Set to 1

Set to 0

4

SM830035

– 105 –

4. Service procedures

4

(8) Automatic Address Setting Method

— For group control and central control with multiple outdoor units —

(9) Displaying Indoor / Outdoor Unit

Combination Numbers

Carry out automatic address setting with the remote controller.

1) All auto. address operation

1

Press the TEST / CHK and (

)

buttons at the same time for more than 4 seconds.

2

Press the SET button after confirming the CODE No. AA (CODE

No. AA: All Auto. address operation).

After addresses are automatically set in order for the outdoor units from

No. 1 to No. 30, the system returns to the normal stopped state.

2) Individual auto. address operation for each refrigerant circuit

1

To select each refrigerant circuit individually and set addresses automatically, press the TEST / CHK and ( ) buttons at the same time for more than 4 seconds, then press the , (SET TEMP) button once to set CODE No. A1.

(CODE No. A1: Auto. address operation)

2

Select R.C. No. which you want to execute the auto. address operation with UNIT button.

3

Press the SET button. The auto. address operation will start. CODE No. changes from flashing to ON state.

4

If the error occurred during the operation, the alarm message will be displayed. Check and remove the cause. If you want to interrupt the operation, press the CL button then the unit stands in waiting mode

(Press the SET button).

5

If the auto. address operation finishes, the display will disappear.

Display the indoor / outdoor unit address after automatic address setting.

1) When installing multiple units, match the indoor unit address numbers and the outdoor R.C. address numbers and display them at an easy-to-check location (near the nameplate) with an oil-based magic marker or other indelible marker so that the individual indoor and outdoor unit combinations can be checked.

Example:

Outdoor Unit 1 – Indoor Units 1-1, 1-2,

1-3, ....

Outdoor Unit 2 – Indoor Units 2-1, 2-2,

2-3, ....

2) Displaying indoor / outdoor unit address is necessary for maintenance. Always label numbers.

*Check indoor unit address with the remote controller. Press the TEST /

CHK button for at least 4 seconds and check the indoor unit address with the

UNIT button. (Each time you press the

UNIT button, the address changes 1-

1, 1-2, ... 2-1, 2-2, ...) The fan for only the selected indoor unit turns on at high speed, so check which indoor unit runs and label the indoor unit address.

(If there is 1 outdoor unit, the addresses are 1-1, 1-2, ...)

When you press the TEST / CHK button again, the system returns to normal remote control mode.

6

Execute the operation of the other

R.C. line in the same way by following the above steps

2

to

3

.

7

Complete the auto. address operation by pressing the TEST / CHK button.

NOTE

Required time for auto. address operation:

In case of group control : a few minutes for each R.C.

In case of central control : max. about 20 min. for each

R.C.

– 106 –

SM830035

(10) Items to Check Prior to Test Run

1) Turn on the power supply switch more than 5 hours before in order to charge the crank case heater.

2) Fully open the outdoor service valve after making the leak inspection of field connected tubing, vacuuming, and gas charging if necessary.

3) Check the capacity code and model code setting.

* The factory setting is as shown in the table.

* The capacity code is set by S4 (green or Blue 4P DIP switch) on outdoor control PCB.

The model code is set by S5 (black, 2P

DIP switch) on outdoor control PCB.

Outdoor control PCB

S4. Capacity code

Model No.

No.

S4 (green or Blue) capacity code

(4P DIP switch)

ON ON side

1 2 3 4

OFF side

S5 (black) model code

(2P DIP switch)

ON ON side

1

Outdoor PCB

2 3 4

25 type (1 phase) ON ON ON OFF

25 type (3 phase) ON ON ON OFF

36 type (3 phase) OFF ON OFF ON

48 type (3 phase) OFF OFF ON ON

1 2

OFF side

0510_C_I

S5. Model code

Model No.

No.

Outdoor PCB

1 2

25 type (1 phase) ON OFF

25 type (3 phase) OFF OFF

36 type (3 phase) OFF OFF

48 type (3 phase) OFF ON

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SM830035

4

4. Service procedures

4

(11) Test Run Procedure

Start

Yes

Multiple remote control?

No

Yes

Turn on RCU address SW of sub remote control unit

Recheck the test items before test operation.

(See 4-2-(10))

Check the indoor and outdoor unit combination (wiring).

Single type?

(One indoor unit and one remote controller for one outdoor unit)

Group control

for multiple outdoor units?

No

Yes

No

Yes

Go to next

R.C. line

No

Multiple indoor units for one outdoor units?

Yes

No

Turn on power supply for indoor units side first. Then turn on power supply for outdoor unit side.

Set the outdoor unit R.C. address.

Turn on power supply switch.

(See 4-2-(6)-(B)) or

Press A. ADD (S1) button.

Execute auto. address operation with the remote controller.

(See 4-2-(8))

Finish all

R.C. line?

Central control for multiple outdoor units?

No

Yes

Yes

Go to next

R.C. line

No

Finish all

R.C. line?

or

CN4: Open (*)

Set the outdoor unit R.C. address.

Turn on power supply switch.

(See 4-2-(6)-(C))

Press A. ADD (S1) button.

Execute auto. address operation with the remote controller.

(See 4-2-(8))

Display the combination number.

(See 4-2-(9))

Set the remote controller to test operation.

Does the unit work?

No

Check according the self-diagnostics function table, and if you find defective parts, repair them according to

Service Manual.

Note: Check the indoor side drain water.

Yes

Return the remote controller to normal.

End

0676_M_I

NOTE

1) One of CN4 of all linked outdoor units shold be short.

2) In case of using system controller, zone registration is required after finishing Test run.

Regarding the zone registration, please refer to Installation Instructions attached with system controller.

SM830035

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