Sanyo C2472, CL2472, ks2472, CL1872, C1872 User Manual

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IMPORTANT

These air conditioners employ new refrigerant R410A.

Pay special attention when servicing the unit.

TECHNICAL & SERVICE MANUAL

KS1872 + C1872

+ CL1872

KS2472 + C2472

+ CL2472

DC INVERTER SPLIT SYSTEM AIR CONDITIONER

Indoor Unit

FILE NO.

Destination: North America

Outdoor Model No.

C1872

C2472

CL1872

CL2472

Product Code No.

1 852 330 36

1 852 330 37

1 852 330 40

1 852 330 41

Outdoor Unit

KS1872 KS2472

C1872 CL1872

C2472 CL2472

REFERENCE NO. SM700663

Indoor Model No.

KS1872

KS2472

Product Code No.

1 852 099 83

1 852 099 84

AIR CO

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

SPECIAL PRECAUTIONS

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

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

CAUTION

WARNING

Important! 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.

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.

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.

When Transporting

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 Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support.

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.

When Connecting Refrigerant Tubing

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.

When Servicing

Tu rn the power off at the main power box (mains) 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 after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

Others

Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas. Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in contact with a stove, gas water heater, electric room heater or other heat source, it can produce dangerously toxic gas.

•

Table of Contents

1. OPERATING RANGE

2. SPECIFICATIONS

2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications

3. DIMENSIONAL DATA

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

5. PERFORMANCE DATA

5-1. Temperature Charts 5-2. Air Throw Distance Charts

6. ELECTRICAL DATA

6-1. Electrical Characteristics 6-2. Electric Wiring Diagrams

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection 7-2. Recommended Wire Length and Diameter 7-3. Remote Control Unit Installation Position 7-4. How to Test Run the Air Conditioner 7-5. Remove the Grille to Install the Indoor Unit

8. MAINTENANCE

8-1. Address Setting of the Remote Control Unit 8-2. Disconnecting and Connecting Positive Connector for Outdoor Unit

9. FUNCTIONS

9-1. Operation Functions 9-2. Protective Functions

6 14 20

25 29

31 33

37 39 40 41 42

43 44

45 47

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Page

10. TROUBLESHOOTING

10-1. Precautions before Performing Inspection or Repair 10-2. Method of Self-Diagnostics 10-3. Checking the Indoor and Outdoor Units 10-4. Trouble Diagnosis of Fan Motor 10-5. Noise Malfunction and Electromagnetic Interference

11. CHECKING ELECTRICAL COMPONENTS

11-1. Measurement of Insulation Resistance 11-2. Checking Continuity of Fuse on PCB Ass'y

12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

12-1. Characteristics of New Refrigerant R410A 12-2. Checklist before Servicing 12-3. Tools Specifically for R410A 12-4. Tubing Installation Procedures 12-5. In Case of Compressor Malfunction 12-6. In Case Refrigerant is Leaking 12-7. Charging Additional Refrigerant 12-8. Retro-Fitting Existing Systems

APPENDIX INSTRUCTION MANUAL

48 48 51 52 54

55 56

57 58 59 59 60 62 63 63

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Page

95 °F D.B. / 71 °F W.B.

67 °F D.B. / 57 °F W.B.

1. OPERATING RANGE

Maximum

Minimum

115 °F D.B.

67 °F D.B.

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

95 °F D.B. / 71 °F W.B.

67 °F D.B. / 57 °F W.B.

Maximum

Minimum

115 °F D.B.

0 °F D.B.

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Models : KS1872 + C1872

KS2472 + C2472

Models : KS1872 + CL1872

KS2472 + CL2472

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit KS1872 Outdoor Unit C1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 17,700 )

Air Circulation (High)

Shipping Volume

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Power Factor

Electrical Rating

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Controls / Temperature Control

Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Manual

Auto

Timer

Indoor / Outdoor

Fan Speeds

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi,Me,Lo)

Airflow Direction (Indoor)

Horizontal

R410A / 2.87 (1.3)

Electric Expansion Valve

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Flare Type

25 (7.5)

42 / 38 / 30 / 28

1/4 (6.35)

1/2 (12.7)

Optional / Air Clean Filter

11-23/32

(298)

26-3/8

(670)

Moisture Removal (High)

Power Input

Available Voltage Range

Running Amperes

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

Vertical

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Depth

Net

Narrow tube

Wide tube

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Cooling

BTU/h

230V Single-Phase 60Hz

524 (890)

4.89

Cooling

187 to 253

( 1.2 to 5.2 )

17,600

5.15

( 1.2 to 7.0 )

( 250 to 1,500 )

7.0

1,500

34-21/32

(880)

8-19/32

(218)

11-7/32

(285)

41-15/16

(1,065)

11-3/8

(289)

29-1/8

(740)

44-7/8

(1,140)

39-27/32

(1,012)

14-31/32

(380)

26.5

(12.0)

90.4

(41.0)

14-29/32

(379)

33.1

(15.0)

99.2

(45.0)

4.24

(0.12)

9.89

(0.28)

230V

Indoor Unit KS1872 Outdoor Unit C1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 17,700 )

Air Circulation (High)

Shipping Volume

4.24

(0.12)

9.89

(0.28)

33.1

(15.0)

99.2

(45.0)

14-31/32

(380)

26.5

(12.0)

90.4

(41.0)

14-29/32

(379)

44-7/8

(1,140)

39-27/32

(1,012)

(285)

11-3/8

(289)

29-1/8

(740)

8-19/32

(218)

11-7/32

11-23/32

(298)

26-3/8

(670)

42 / 38 / 30 / 28

Manual

Auto

Electric Expansion Valve

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Controls / Temperature Control

Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Timer

Indoor / Outdoor

Fan Speeds

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi,Me,Lo)

Airflow Direction (Indoor)

Horizontal

R410A / 2.87 (1.3)

Washable, Anti-Mold

DC Rotary (Inverter)

Vertical

Flare Type

25 (7.5)

1/4 (6.35)

1/2 (12.7)

Optional / Air Clean Filter

41-15/16

(1,065)

34-21/32

(880)

Electrical Rating

Moisture Removal (High)

Power Input

Available Voltage Range

Running Amperes

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Depth

Net

Narrow tube

Wide tube

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Cooling

BTU/h

208V Single-Phase 60Hz

524 (890)

4.89

Cooling

187 to 253

( 1.2 to 5.2 )

17,600

5.15

( 1.2 to 7.7 )

( 250 to 1,500 )

7.7

1,500

208V

Indoor Unit KS2472 Outdoor Unit C2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 24,200 )

Air Circulation (High)

Shipping Volume

4.24

(0.12)

12.71

(0.36)

33.1

(15.0)

127.9

(58.0)

16-1/4

(413)

26.5

(12.0)

119.0

(54.0)

44-7/8

(1,140)

40-5/8

(1,032)

(320)

11-3/8

(289)

33-27/32

(860)2011-23/32

(298)

29-1/8

(740)

47 / 44 / 41 / 30

Manual

Auto

Electric Expansion Valve

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Controls / Temperature Control

Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Timer

Indoor / Outdoor

Fan Speeds

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi,Me,Lo)

Airflow Direction (Indoor)

Horizontal

R410A / 4.30 (1.95)

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Vertical

Flare Type

33 (10)

1/4 (6.35)

5/8 (15.88)

Optional / Air Clean Filter

41-15/16

(1,065)

14-29/32

(379)

35-7/16

(900)

8-19/32

(218)

12-19/32

Electrical Rating

Moisture Removal (High)

Power Input

Available Voltage Range

Running Amperes

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Depth

Net

Narrow tube

Wide tube

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Cooling

BTU/h

230V Single-Phase 60Hz

600 (1,020)

4.89

Cooling

187 to 253

( 1.2 to 7.1 )

24,200

7.1

( 1.3 to 10.8 )

( 280 to 2,355 )

10.8

2,355

230V

Indoor Unit KS2472 Outdoor Unit C2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 24,200 )

Air Circulation (High)

Shipping Volume

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Electrical Rating

Moisture Removal (High)

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Airflow Direction (Indoor)

Horizontal

Controls / Temperature Control

Control Unit

Timer

Indoor / Outdoor

Fan Speeds

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi,Me,Lo)

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Manual

Auto

Flare Type

33 (10)

R410A / 4.30 (1.95)

Electric Expansion Valve

Power Input

Available Voltage Range

Running Amperes

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

Vertical

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Depth

Net

Narrow tube

Wide tube

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Cooling

BTU/h

208V Single-Phase 60Hz

600 (1,020)

4.89

Cooling

187 to 253

( 1.2 to 7.1 )

24,200

7.1

( 1.3 to 12.1 )

( 280 to 2,350 )

12.1

2,3552011-23/32

(298)

29-1/8

(740)

47 / 44 / 41 / 30

1/4 (6.35)

5/8 (15.88)

Optional / Air Clean Filter

35-7/16

(900)

8-19/32

(218)

12-19/32

(320)

41-15/16

(1,065)

11-3/8

(289)

33-27/32

(860)

44-7/8

(1,140)

40-5/8

(1,032)

16-1/4

(413)

26.5

(12.0)

119.0

(54.0)

14-29/32

(379)

33.1

(15.0)

127.9

(58.0)

4.24

(0.12)

12.71

(0.36)

208V

Indoor Unit KS1872 Outdoor Unit CL1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 17,700 )

Air Circulation (High)

Shipping Volume

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Electrical Rating

Moisture Removal (High)

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Airflow Direction (Indoor)

Horizontal

Controls / Temperature Control

Control Unit

Timer

Indoor / Outdoor

Fan Speeds

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi and multi steps)

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Manual

Auto

Flare Type

33 (10)

R410A / 2.87 (1.3)

Electric Expansion Valve

1/4 (6.35)

1/2 (12.7)

Optional / Air Clean Filter

11-23/32

(298)

26-3/8

(670)

Power Input

Available Voltage Range

Running Amperes

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

Vertical

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Depth

Net

Narrow tube

Wide tube

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Cooling

BTU/h

230V Single-Phase 60Hz

524 (890)

4.89

Cooling

187 to 253

( 1.2 to 5.2 )

17,600

5.15

( 1.2 to 7.0 )

( 250 to 1,500 )

7.0

1,500

34-21/32

(880)

8-19/32

(218)

11-7/32

(285)

41-15/16

(1,065)

(1,012)

11-3/8

(289)

29-1/8

(740)

33.1

44-7/8

(1,140)

39-27/32

14-31/32

(380)

26.5

(12.0)

90.4

(41.0)

14-29/32

(379)

42 / 38 / 30 / 28

4.24

(0.12)

9.89

(0.28)

(15.0)

99.2

(45.0)

230V

Indoor Unit KS1872 Outdoor Unit CL1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 17,700 )

Air Circulation (High)

Shipping Volume2042 / 38 / 30 / 28

4.24

(0.12)

9.89

(0.28)

(15.0)

99.2

(45.0)

(380)

26.5

(12.0)

90.4

(41.0)

14-29/32

(379)

33.1

44-7/8

(1,140)

39-27/32

14-31/32

(1,012)

11-3/8

(289)

29-1/8

(740)

34-21/32

(880)

8-19/32

(218)

11-7/32

(285)

41-15/16

(1,065)

( 1.2 to 5.2 )

17,600

5.15

( 1.2 to 7.7 )

( 250 to 1,500 )

7.7

1,500

Cooling

BTU/h

208V Single-Phase 60Hz

524 (890)

4.89

Cooling

187 to 253

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Depth

Net

Narrow tube

Wide tube

Vertical

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

Power Input

Available Voltage Range

Running Amperes

1/4 (6.35)

1/2 (12.7)

Optional / Air Clean Filter

11-23/32

(298)

26-3/8

(670)

Flare Type

33 (10)

R410A / 2.87 (1.3)

Electric Expansion Valve

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi and multi steps)

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Manual

Auto

Airflow Direction (Indoor)

Horizontal

Controls / Temperature Control

Control Unit

Timer

Indoor / Outdoor

Fan Speeds

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Electrical Rating

Moisture Removal (High)

208V

Indoor Unit KS2472 Outdoor Unit CL2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 24,200 )

Air Circulation (High)

Shipping Volume2047 / 44 / 41 / 30

4.24

(0.12)

12.71

(0.36)

33.1

(15.0)

127.9

(58.0)

16-1/4

(413)

26.5

(12.0)

119.0

(54.0)

14-29/32

(379)

44-7/8

(1,140)

40-5/8

(1,032)

11-3/8

(289)

33-27/32

(860)

35-7/16

(900)

8-19/32

(218)

12-19/32

(320)

41-15/16

(1,065)

( 1.2 to 7.1 )

24,200

7.1

( 1.3 to 10.8 )

( 280 to 2,355 )

10.8

2,355

Cooling

BTU/h

230V Single-Phase 60Hz

600 (1,020)

4.89

Cooling

187 to 253

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Depth

Net

Narrow tube

Wide tube

Vertical

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

Power Input

Available Voltage Range

Running Amperes

1/4 (6.35)

5/8 (15.88)

Optional / Air Clean Filter

11-23/32

(298)

29-1/8

(740)

Flare Type

33 (10)

R410A / 4.30 (1.95)

Electric Expansion Valve

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi and multi steps)

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Manual

Auto

Airflow Direction (Indoor)

Horizontal

Controls / Temperature Control

Control Unit

Timer

Indoor / Outdoor

Fan Speeds

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Electrical Rating

Moisture Removal (High)

230V

Indoor Unit KS2472 Outdoor Unit CL2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.

Outdoor air temperature 95°F D.B. / 75°F W.B.

( 4,100 to 24,200 )

Air Circulation (High)

Shipping Volume2047 / 44 / 41 / 30

4.24

(0.12)

12.71

(0.36)

33.1

(15.0)

127.9

(58.0)

16-1/4

(413)

26.5

(12.0)

119.0

(54.0)

14-29/32

(379)

44-7/8

(1,140)

40-5/8

(1,032)

11-3/8

(289)

33-27/32

(860)

35-7/16

(900)

8-19/32

(218)

12-19/32

(320)

41-15/16

(1,065)

( 1.2 to 7.1 )

24,200

7.1

( 1.3 to 12.1 )

( 280 to 2,355 )

12.1

2,355

Cooling

BTU/h

208V Single-Phase 60Hz

600 (1,020)

4.89

Cooling

187 to 253

cu.ft (m3)

Indoor : Hi/Me/Lo/Qt*

Shipping

inch (mm)

Height

Depth

Net

Narrow tube

Wide tube

Vertical

dB-A

Air Filter

Operation Sound

Compressor

Refrigerant / Amount charged at shipment

lb. (kg)

Refrigerant Control

Max. allowable tubing length at shipment

Outdoor : Hi

inch (mm)

lb. (kg)

Unit Dimensions

Package Dimensions

Weight

inch (mm)

Depth

Height

Width

17.5

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

Refrigerant Tube Kit / Accessories

Refrigerant

Tube Diameter

Outdoor Unit

Indoor Unit

ft. (m)

Power Input

Available Voltage Range

Running Amperes

1/4 (6.35)

5/8 (15.88)

Optional / Air Clean Filter

11-23/32

(298)

29-1/8

(740)

Flare Type

33 (10)

R410A / 4.30 (1.95)

Electric Expansion Valve

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps / Auto (Hi and multi steps)

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Manual

Auto

Airflow Direction (Indoor)

Horizontal

Controls / Temperature Control

Control Unit

Timer

Indoor / Outdoor

Fan Speeds

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Power Factor

Features

SEER

Compressor Locked Rotor Amperes

BTU/W

Fuse or Circuit Breaker Capacity

Voltage Rating

Pints/h

Capacity

ft3/min (m3/h)

Performance

Electrical Rating

Moisture Removal (High)

208V

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit KS1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Micro F

VAC

Over-Heat Protection

(Ambient Temp. 68oF (20oC))

Coil Resistance

Ohm

Coil Resistance

Ohm

Safety Device

Flap Motor

Type

Stepping Motor

Rough Measure RPM (Cool)

Run Capacitor

Type

DC Motor

Q'ty ... Dia. and Length

Type

1,250

Model ... Q'ty

No. of Poles

SIC-39CVL-D847-2-A ... 1

Nominal Output

Model

Over-Current Protection

inch (mm)

(Ambient Temp. 77oF (25oC ))

Each Pair of Terminal : 400 +/- 7%

Control PCB

CB-KS1872

Part No.

Fan Motor

MP24Z3

DC 12V

Rating

Type

Heat Exchanger Coil

Microprocessor

250V 3A

Control Circuit Fuse

Controls

1 ... D3-11/16 / L33-9/32 (D94/L845)

RCS-4VPIS4U

Fan

Cross-Flow

Remote Control Unit

Face Area

ft2 (m2)

3.07 (0.285)

Coil

Rows

Fins per inch

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

19.5

Indoor Unit KS2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Micro F

VAC

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

Heat Exchanger Coil

Face Area

ft2 (m2)

3.07 (0.285)

Coil

Rows

Fins per inch

19.5

Microprocessor

250V 3A

Control Circuit Fuse

Controls

1 ... D3-11/16 / L33-9/32 (D94/L845)

RCS-4VPIS4U

Fan

Cross-Flow

Remote Control Unit

inch (mm)

Type

Q'ty ... Dia. and Length

(Ambient Temp. 77oF (25oC ))

Each Pair of Terminal : 400 +/- 7%

Control PCB

CB-KS2472

Part No.

Fan Motor

MP24Z3

DC 12V

Coil Resistance

Ohm

Safety Device

Rating

Type

Model

Over-Current Protection

Over-Heat Protection

(Ambient Temp. 68oF (20oC))

Nominal Output

Coil Resistance

Ohm

1,500

Model ... Q'ty

No. of Poles

SIC-39CVL-D847-2-A ... 1

Type

Flap Motor

Type

Stepping Motor

Rough Measure RPM (Cool)

Run Capacitor

DC Motor

2-2-2. Outdoor Unit

Outdoor Unit C1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Pints (cc)

Ohm R - S : 0.482

S - T : 0.482

T - R : 0.482

CT (Peak current cut-off control)

Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Model

Operation Temp.

Micro F

VAC

RED - WHT : 77.5

WHT - BLU : 77.5

BLU - RED : 77.5

Type

Over- Current Protection

Micro F

VAC

Compressor

inch (mm)

Type

Crankcase Heater

Yes

Safety Device

Rough Measure RPM (Cool)

Run Capacitor

Type

Model ... Q'ty

No. of Poles

Ohm

Nominal Output

Control PCB

CB-C1872

Part No.

Fan Motor

Type

Compressor Model / Nominal Output

Compressor Oil ... Amount

1 ... D16 -17/32 (D420)

Fan

Propeller

(Ambient Temp. 68oF (20oC))

DAJ12-55J71A-CU ... 1

820

DC Motor

Q'ty ... Dia.

Coil Resistance

Microprocessor

250V 25A

Control Circuit Fuse

Controls

Face Area

ft2 (m2)

5.49 (0.510)

Coil

Rows

Fins per inch

21.2

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

Heat Exchanger Coil

Run Capacitor

CS-7L115

Open : 239oF(115oC), Close : 203oF(95oC)

Overload Relay

Coil Resistance (Ambient Temp. 68oF (20oC))

External Finish

Acrylic baked-on enamel finish

DC Twin Rotary (Hermetic)

C-6RVN93H0M / 1,050W

FV50S ... 0.74 (350)

Yes

Safety Device

Yes

Outdoor Unit C2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Pints (cc)

Ohm U - V : 0.36

V - W : 0.36

W - U : 0.36

CT (Peak current cut-off control)

Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Model

Operation Temp.

Micro F

VAC

Type

Over- Current Protection

Over- Heat Protection

Micro F

VAC

DC Motor

Q'ty ... Dia.

Compressor

inch (mm)

Type

Crankcase Heater

Safety Device

Rough Measure RPM (Cool)

Run Capacitor

Type

Model ... Q'ty

No. of Poles

Ohm

Nominal Output

Coil Resistance

850

Control PCB

CB-C2472

Part No.

Fan Motor

Type

Compressor Model / Nominal Output

Compressor Oil ... Amount

--Yes

Heat Exchanger Coil

Microprocessor

250V 25A

Control Circuit Fuse

Controls

1 ... D18-1/8 (D460)

Fan

Propeller

(Ambient Temp. 68oF (20oC))

SIC-71FW-D490-1 ... 1

Coil

Rows

Fins per inch

18.1

Face Area

ft2 (m2)

6.40 (0.595)

Overload Relay

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

DC Twin Rotary (Hermetic)

G8T265FU1JW / 2,410W

FV50S ... 1.49 (700)

Yes

Coil Resistance (Ambient Temp. 77oF (25oC))

External Finish

Acrylic baked-on enamel finish

Safety Device

Yes

Run Capacitor

CS-7L115

Open : 239oF(115oC), Close : 203oF(95oC)

Outdoor Unit CL1872

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Pints (cc)

Ohm R - S : 0.482

S - T : 0.482

T - R : 0.482

CT (Peak current cut-off control)

Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Model

Operation Temp.

Micro F

VAC

RED - WHT : 77.5

WHT - BLU : 77.5

BLU - RED : 77.5

Type

Over- Current Protection

Micro F

VAC

DC Motor

Q'ty ... Dia.

Compressor

inch (mm)

Type

Crankcase Heater

Safety Device

Rough Measure RPM (Cool)

Run Capacitor

Type

Model ... Q'ty

No. of Poles

Ohm

Nominal Output

Coil Resistance

850820

(Ambient Temp. 68oF (20oC))

Control PCB

CB-CL1842

Part No.

Fan Motor

Type

Compressor Model / Nominal Output

Compressor Oil ... Amount

--Yes

Heat Exchanger Coil

Microprocessor

250V 25A

Control Circuit Fuse

Controls

1 ... D16 -17/32 (D420)

Fan

Propeller

DAJ12-55J71A-CU ... 1

Run Capacitor

Face Area

ft2 (m2)

5.49 (0.510)

Coil

Rows

Fins per inch

Aluminum Plate Fin / Copper Tube

21.2

Open : 239oF(115oC), Close : 203oF(95oC)

Overload Relay

Yes

Internal Controller

Coil Resistance (Ambient Temp. 68oF (20oC))

External Finish

Acrylic baked-on enamel finish

DC Twin Rotary (Hermetic)

C-6RVN93H0M / 1,050W

FV50S ... 0.74 (350)

Yes

Safety Device

Yes

CS-7L115

Outdoor Unit CL2472

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Pints (cc)

Ohm U - V : 0.36

V - W : 0.36

W - U : 0.36

CT (Peak current cut-off control)

Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Model

Operation Temp.

Micro F

VAC

Type

Over- Current Protection

Over- Heat Protection

Micro F

VAC

SIC-71FW-D490-1 ... 1

Rows

Fins per inch

18.1

Internal Controller

1 ... D18-1/8 (D460)

Fan

Propeller

Run Capacitor

Q'ty ... Dia.

Control Circuit Fuse

Controls

Coil Resistance (Ambient Temp. 77oF (25oC))

DC Twin Rotary (Hermetic)

G8T265FU1JW / 2,410W

FV50S ... 1.49 (700)

Part No.

Fan Motor

Type

Compressor Model / Nominal Output

Compressor Oil ... Amount

230V 30W

Yes

Microprocessor

250V 25A

Coil Resistance

850

(Ambient Temp. 68oF (20oC))

Compressor

inch (mm)

Type

Crankcase Heater

Control PCB

CB-CL2472

Yes

Heat Exchanger Coil

Aluminum Plate Fin / Copper Tube

Coil

Acrylic baked-on enamel finish

External Finish

Face Area

ft2 (m2)

6.40 (0.595)

DC Motor

Safety Device

Rough Measure RPM (Cool)

Type

Model ... Q'ty

No. of Poles

Run Capacitor

Yes

Safety Device

Yes

Overload Relay

Open : 239oF(115oC), Close : 203oF(95oC)

CS-7L115

Ohm

Nominal Output

2-3. Other Component Specifications

Indoor Unit KS1872

KS2472

Outdoor Unit C1872 C2472

CL1872 CL2472

32 50 68 86 104 122 140 158 176 194

(0) (10) (20) (30) (40) (50) (60) (70) (80) (90)

100

120

140

160

180

200

59 68 77 86 95 104

(10) (15) (20) (25) (30) (35) (40)

Indoor air temp sensor

(Model:PTM-D51H-S3 TH2)

Indoor heat exchanger sensor

(Model:PTM-D51H-S3 TH1)

Compressor temp sensor

(Model:TKS 293B)

Resistance (k ohm)

Temperature °F (°C)

Outdoor air temp sensor

(Model:TKS295B)

Outdoor heat exchanger sensor

(Model:TKS292B)

451423 32 41 50 59 68

(

20)(-15)(-10) (-5) (0) (5) (10) (15) (20)

Resistance (k ohm)

Temperature °F (°C)

3. DIMENSIONAL DATA

Indoor Unit KS1872

KS2472

Unit: inch(mm)

Narrow tube service valve dia.1/4" (6.35)

Wide tube service valve dia.1/2" (12.70)

4-3/8 2-5/32

6-17/32

5-23/32

3/32

26-3/8 (670)

23/32

1-13/16

34-21/32 (880)

23-15/16 5-11/32

15/32

11-7/32 (285)

12-7/32

13-5/32

11-17/32

ID:23/32

2-ID:15/16

1-3/8

2-17/32

2-13/32

Outdoor Unit C1872

CL1872

Wide tube service valve dia.5/8" (15.88)

Narrow tube service valve dia.1/4" (6.35)

4-7/16

5-29/32

2-1/32 4-1/2

29-1/8 (740)

23/32

1-21/32

35-7/16(900)

23-15/16 5-11/32

15/32

12-19/32(320)

13-19/32

14-17/32

11-17/32

ID:23/32

2-ID:15/16

1-3/8

2-15/16

2-7/8

Unit: inch(mm)

Outdoor Unit C2472

CL2472

Compressor

Accumulator

Wide tube service valve

Wide tube

Narrow tube service valve

Narrow tube

Heat exchanger

Muffler

Cooling cycle

Indoor unit Outdoor unit

Electric

expansion

valve

*1 O.D.1/2"(12.7mm)

...

1872 class

O.D.5/8"(15.88mm)

...

2472 class

O.D. 1/4" (6.35 mm)

H.P.

High pressure

switch

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit KS1872

KS2472

Outdoor Unit C1872 C2472

CL1872 CL2472

Insulation of Refrigerant Tubing

Because capillary tubing is used in the outdoor unit, both the wide and narrow tubes of this air conditioner become cold. To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material. The thickness of the insulation should be a min. 5/16"(8 mm).

After a tube has been insulated, never try to bend it into a narrow curve because it can cause the tube to break or crack.

Wide tube

Thickness: Min. 5/16"(8 mm)

Insulation

Narrow tube

Thickness: Min. 5/16"(8 mm)

IMPORTANT

CAUTION

5. PERFORMANCE DATA

5-1. Temperature Charts

Indoor Unit KS1872 Outdoor Unit C1872

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.

Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode. (Refer to "9-2. Overload prevention during heating.") :Points of rating condition Black dots in above charts indicate the following rating conditions.

NOTE

Cooling: Indoor air temperature 80 °F D.B. / 67 °F W.B.

Outdoor air temperature 95 °F D.B.

Operating current (A)

Indoor discharge air temperature

°F(°C)

(25)

(30)

(35)

104 (40)

Outdoor inlet air D.B. temp. °F(°C)

(25)

(30)

(35)

104 (40)

(25)

50.0(10)

60.8(16)

53.6(12)

57.2(14)

64.4(18)

68.0(20)

(30)

(35)

104 (40)

Outdoor inlet air D.B. temp. °F(°C)

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

75°F (

°C)

Indoor air temp.86

°F (30°C)

80°F (

°C)

80°F (

°C)

Indoor air temp.86°F (30°C)

75°F (

°C)

80°F (

°C)

75°F (

°C)

Indoor air temp.86

°F (30°C)

Low pressure at wide tube service valve

psig (MPaG)

159 (1.1)

145 (1.0)

131 (0.9)

117 (0.8)

Cooling Characteristics (230V)

Indoor Unit KS1872 Outdoor Unit CL1872

NOTE

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.

Outdoor air temperature 95 °F D.B.

Operating current (A)

Indoor discharge air temperature

°F(°C)

(25)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

(25)

(30)

(35)

104 (40)

(25)

50.0(10)

60.8(16)

53.6(12)

57.2(14)

64.4(18)

68.0(20)

(30)

(35)

104 (40)

Outdoor inlet air D.B. temp. °F(°C)

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

75°F (

°C)

Indoor air temp.86

°F (30°C)

80°F (

°C)

80°F (

°C)

Indoor air temp.86°F (30°C)

75°F (

°C)

80°F (

°C)

75°F (

°C)

Indoor air temp.86

°F (30°C)

Low pressure at wide tube service valve

psig (MPaG)

159

(1.1)

145

(1.0)

131

(0.9)

117

(0.8)

Cooling Characteristics (230V)

Indoor Unit KS2472 Outdoor Unit C2472

NOTE

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.

Outdoor air temperature 95 °F D.B.

Cooling Characteristics (230V)

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

°F (

°C)

Indoor air temp.86

°F (

30°C)

°F (

°C)

Indoor air temp.86

°F (

30°C)

°F (

°C)

°F (27

°C)

°F (

°C)

Indoor air temp.86

°F (30°C)

Operating current (A)

Indoor discharge air temperature

°F(°C)

(25)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

(25)

(30)

(35)

104 (40)

(25)

50.0(10)

60.8(16)

53.6(12)

57.2(14)

64.4(18)

68.0(20)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

Low pressure at wide tube service valve

psig (MPaG)

159

(1.1)

145

(1.0)

131

(0.9)

117

(0.8)

°F (

°C)

Indoor Unit KS2472 Outdoor Unit CL2472

NOTE

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.

Outdoor air temperature 95 °F D.B.

Cooling Characteristics (230V)

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

Outdoor fan speed

HighLow

°F (

°C)

Indoor air temp.86

°F (

30°C)

°F (

°C)

Indoor air temp.86

°F (

30°C)

°F (

°C)

°F (27

°C)

°F (

°C)

Indoor air temp.86

°F (30°C)

Operating current (A)

Indoor discharge air temperature

°F(°C)

(25)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

(25)

(30)

(35)

104 (40)

(25)

50.0(10)

60.8(16)

53.6(12)

57.2(14)

64.4(18)

68.0(20)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

Low pressure at wide tube service valve

psig (MPaG)

159

(1.1)

145

(1.0)

131

(0.9)

117

(0.8)

°F (

°C)

Horizontal distance (ft.)

Axis air velocity (ft./sec.)

Vertical distance (ft.)

Room air temp. : 80°F (26.7°C)

Fan speed : High

Cooling

: Flap angle 0 , : Axis air velocity 0 : Flap angle 30 , : Axis air velocity 30

5-2. Air Throw Distance Charts

Indoor Unit KS1872

051015 20 25 30

Horizontal distance (ft.)

Axis air velocity (ft./sec.)

Vertical distance (ft.)

Room air temp. : 80°F (26.7°C) Fan speed : High

Cooling

: Flap angle 0 , : Axis air velocity 0 : Flap angle 30 , : Axis air velocity 30

Indoor Unit KS2472

051015 20 25 30

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor Unit KS1872 Outdoor Unit C1872

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.3

Power input W

6.7

1,468

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Cooling

7.0

1,500

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.3

Power input 32

7.4

1,468

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Cooling

7.7

1,500

Indoor Unit KS1872 Outdoor Unit CL1872

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. 0.3

Power input 32

6.7

1,468

Cooling

7.0

1,500

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.3

Power input 32

7.4

1,468

Cooling

7.7

1,500

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Complete Unit

230V

208V

230V

208V

Complete Unit

Indoor Unit KS2472 Outdoor Unit C2472

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.5

Power input W

10.3

2,300

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Cooling

10.8

2,355

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.5

Power input 55

11.6

2,300

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Cooling

12.1

2,355

Indoor Unit KS2472 Outdoor Unit CL2472

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. 0.5

Power input 55

10.3

2,300

Cooling

10.8

2,355

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.5

Power input 55

11.6

2,300

Cooling

12.1

2,355

Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.

Outdoor air temperature: 95°F (35°C) D.B.

Complete Unit

230V

208V

230V

208V

Complete Unit

EVAPORATOR

TERMINAL BASE

TO OUTDOOR UNIT

GRN/YEL

LAMP

10P(

WHT

)

FLAP 5P (WHT)

FLAP

CONNECTOR

FLAP MOTOR

RED PNK

BLU

BRN

YEL

1 2 3 4 5

AC1 AC2 SI

WHT

RED

WHT WHT WHT WHT WHT WHT WHT WHT

1 2 3 4 5 6 7 8 9

IND LAMP ASSY

ROOM/COIL

4P(

WHT

)

DCM 6P(BLU)

CONTROLLER

FAN MOTOR

1 2 3 4 5 6

ROOM THERMISTOR

BLK BLK BLK BLK

1 2 3 4

COIL THERMISTOR

ION

3P (

WHT

)

JEM-A

1 2 3

4P (WHT)

1 2 4

BLK

RED

WHT

1 2 3 4 1 2 3 4

ION ASSY

ION TERMINAL

WHT

BLK

RED

BLK

YEL

WHT

BLU

8FA2-5257-70500-0

6-2. Electric Wiring Diagrams

Indoor Unit KS1872 KS2472

WARNING

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

8FA2-5257-68600-2

REACTANCE

GND

POWER SUPPLY

321

1 2 3

COMPRESSOR

MOTOR

RED (PNK)

WHT

BLU

RED

(PNK)

WHT

BLU

FERRITE

CORE

CONNECTOR (WHT)

RST

W W

CONTROLLER

1 2 3 4

1 2 3 455

1 2 3 4

1 2 3 455

1 2 3 4

1 2

L1WL2WHIC

HIC

25A

MV0

DCFM

COMP

A-TH

2P-CONNECTOR

(

WHT

)

WHT

GRN/YEL

112

GRN/YEL

TERMINAL

PLATE

FERRITE

CORE

GND

TO INDOOR UNIT

POWER RELAY

BLK

WHT

1 2 3 4 5 6 7

GRN/YEL

FAN MOTOR

1 2 3 4 5 6 7

BLK BLK

YEL

BLK

BLU

RED

BLK

WHT

YEL

BLU

RED

BLK

YEL

WHT

GRY

RED

ORG

WHT

COMPRESSOR

THERMISTOR

OVERLOAD RELAY

(OLR)

OUT DOOR

THERMISTOR

1 2 3 4

COIL/OUTDOOR

YEL

COIL

THERMISTOR

7P-CONNECTOR (WHT)

MAGNETIC COIL

2P-CONNECTOR (RED)

2P-CONNECTOR (BLK)

HIGH PRESSURE

SWITCH

1 1 2 2

WHT WHT

1 1 2 2

WHT

BRN

WHT

HIC

BLK

AC2WAC2

BLU

WA1W

RED

ACIN1

ACIN2

SI-A

BLK

WHT

RED

BLK

Outdoor Unit C1872 CL1872

WARNING

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

GND

POWER SUPPLY

TERMINAL

PLATE

FERRITE

CORE

GND

TO INDOOR UNIT

POWER RELAY

BLK

WHT

BLK BLK

2P-CONNECTOR (BLK)

HIGH PRESSURE

SWITCH

1 1 2 2

WHT

ACIN1

ACIN2

SI-A

BLK

WHT

RED

BLK

8FA2-5257-68700-3

REACTANCE

321

1 2 3

COMPRESSOR

MOTOR

RED (PNK)

WHT

BLU

RED

(PNK)

WHT

BLU

FERRITE

CORE

CONNECTOR (WHT)

UVW

CONTROLLER

1 2 3 4

1 2 3 455

1 2 3 4

1 2 3 455

1 2 3 4

1 2

L1WL2WHIC

HIC

25A

MV0

DCFM

COMP

A-TH

2P-CONNECTOR

(

WHT

)

WHT

112

1 2 3 4 5 6 7

FAN MOTOR

1 2 3 4 5 6 7

ORG

BLK

WHT

BRN

BLU

BLK

RED

ORG

WHT

BRN

BLU

YEL

WHT

GRY

RED

ORG

RED

COMPRESSOR

THERMISTOR

OVERLOAD RELAY

(OLR)

OUT DOOR

THERMISTOR

1 2 3 4

COIL/OUTDOOR

YEL

COIL

THERMISTOR

7P-CONNECTOR (WHT)

MAGNETIC COIL

2P-CONNECTOR (RED)

WHT WHT

1 1 2 2

BRN

WHT

HIC

BLK

AC2WAC2

BLU

GRN/YEL

WA1W

RED

Outdoor Unit C2472

WARNING

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

GND

POWER

SUPPLY

TERMINAL

PLATE

FERRITE

CORE

GND

TO INDOOR UNIT

POWER RELAY

BLK

WHT

BLK BLK

2P-CONNECTOR (BLK)

HIGH PRESSURE

SWITCH

1 1 2 2

WHT

ACIN1

ACIN2

SI-A

BLK

WHT

RED

BLK

8FA2-5257-68400-3

REACTANCE

321

1 2 3

COMPRESSOR

MOTOR

RED (PNK)

WHT

BLU

RED

(PNK)

WHT

BLU

FERRITE

CORE

CONNECTOR (WHT)

UVW

CONTROLLER

1 2 3 4

1 2 3 455

1 2 3 4

1 2 3 455

1 2 3 4

1 2

L1WL2WHIC

HIC

25A

MV0

DCFM

COMP

A-TH

2P-CONNECTOR

(

WHT

)

WHT

112

1 2 3 4 5 6 7

FAN MOTOR

1 2 3 4 5 6 7

ORG

BLK

WHT

BRN

BLU

BLK

RED

ORG

WHT

BRN

BLU

YEL

WHT

GRY

RED

ORG

RED

COMPRESSOR

THERMISTOR

OVERLOAD RELAY

(OLR)

OUT DOOR

THERMISTOR

1 2 3 4

COIL/OUTDOOR

YEL

COIL

THERMISTOR

7P-CONNECTOR (WHT)

MAGNETIC COIL

2P-CONNECTOR (RED)

WHT WHT

1 1 2 2

BRN

WHT

HIC

BLK

AC2WAC2

BLU

GRN/YEL

WA1W

RED

W W

HEATER0HEATER1

1P-CONNECTOR (WHT

)

1P-CONNECTOR (WHT

)

WHT

1 1

CRANKCASE

HEATER

Outdoor Unit CL2472

WARNING

To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.

WARNING

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection

7-1-1. Indoor Unit

To prevent abnormal heat generation and the possibility of fire, do not place obstacles, enclosures and grilles in front of or surrounding the air conditioner in a way that may block air flow.

For stable operation of the air conditioner, do not install wall-mounted type indoor units less than 5' (1.5 m) from floor level.

AVOID:

direct sunlight.

nearby heat sources that may affect performance of

the unit.

areas where leakage of flammable gas may be

expected.

places where large amounts of oil mist exist.

DO:

select an appropriate position from which every corner

of the room can be uniformly cooled. (High on a wall

is best.)

select a location that will hold the weight of the unit.

select a location where tubing and drain hose have

the shortest run to the outside.

allow room for operation and maintenance as well as

unrestricted air flow around the unit. (Fig. 1)

install the unit within the maximum elevation

difference (H) above or below the outdoor unit and

within a total tubing length (L) from the outdoor unit as

detailed in Table 1 and Fig. 2.

Install the indoor unit more than 3.3' (1 m) away from

any antenna or power lines or connecting wires used

for television, radio, telephone, security system, or

intercom. Electrical noise from any of these sources

may affect operation.

Table 1

Model

KS1872

* If total tubing length becomes 25 to 98 ft. (Max.) or 33 to 131 ft. (Max.), charge additional refrigerant (R410A) by 0.27 oz. /ft. No additional charge of compressor oil is necessary.

Max. Allowable Tubing

Length at Shipment

(ft.)

Limit of Tubing

Length (L)

(ft.)

Limit of Elevation

Difference (H)

(ft.)

Required Amount of

Additional Refrigerant

(oz. / ft.)*

0.27

KS2472 33 131 49 0.27

2" (5 cm)

min.

2" (5 cm)

min.

6" (15 cm)

min.

Front View

INDOOR UNIT

Tubing length (L)

OUTDOOR UNIT

Elevation difference (H)

CAUTION

Indoor unit

Floor level

Wall

Minimum height from floor level

5' (1.5 m)

Fig. 1

Fig. 2

Fig. 3

Fig. 5c

Air intake Min. 4" (10 cm)

Air discharge

Min.

2" (5 cm)

Min. 1'4" (40 cm)

Valve side Min. 10" (25 cm)

Min.

7' (2 m)

Min.

7' (2 m)

Ground

bOs elcat

Obstacle above

id riAsrahcge

Min. 4" (10 cm)

Air intake

Concrete or equal

)mc 01( "4

tuob

Min. 4" (10 cm)

Anchor bolts (4 pcs.)

)

04( "4'

1 tuobA

Fig. 5e

Cushion rubber

Fig. 5a

(C1872, CL1872)

Air inta ke Min. 8" (20 cm)

Air discharge

Min.

4" (10 cm)

Min. 1'8" (50 cm)

Valve side Min. 10" (25 cm)

Min.

7' (2 m)

Min.

7' (2 m)

Ground

bOs elcat

Obstacle above

id riAsrahcge

Min. 8" (20 cm)

Air intake

Fig. 5b

(C2472, CL2472)

(C1872, CL1872)

Fig. 5d

Air inta ke

Concrete or equal

obAu

)mc 51( "6 t

Min. 6" (15 cm)

Anchor bolts (4 pcs.)

obAu )mc 04( "4'1 t

(C2472, CL2472)

Outdoor unit

Hot air

Heat source

Exhaust fan

7-1-2. Outdoor Unit

Fig. 4

AVOID:

heat sources, exhaust fans, etc. (Fig. 4) damp, humid or uneven locations.

DO:

choose a place as cool as possible. choose a place that is well ventilated. allow enough room around the unit for air intake/ exhaust and possible maintenance. (Fig. 5a or 5b) provide a solid base (level concrete pad, concrete block, 4" × 1' 4" (10 × 40 cm) or 6" × 1'4" (15 × 40 cm) beams or equal), a minimum of 4" (10 cm) or 6" (15 cm) above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Fig. 5c or 5d) Install cushion rubber under unit's feet to reduce vibration and noise. (Fig. 5e) use lug bolts or equal to bolt down unit, reducing vibration and noise. Install in a location where no antenna of a television or radio exists within 10' (3 m).

Disconnect switch Field supply

Grounding line

230 / 208V

INDOOR

UNIT

OUTDOOR

UNIT

Grounding line

Power supply

Single phase 230 / 208V 60HZ

Terminal Terminal

(A)

(B)

(C)

(B)

(A) Power Supply Wiring Length (ft.) (B) Power Line Length (ft.)

Line Length (ft.)

(A)+(B)

WARNING

7-2. Recommended Wire Length and Diameter

Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation. Table 2 lists recommended wire lengths and diameters for power supply systems.

Refer to the wiring system diagram (Fig. 6) for the meaning of (A), (B) and (C) in Table 2.

Refer to your local codes or in the absence of local codes see the National Electric Code: ANSI/NFPA70.

Be sure to comply with local codes on running the wire from the indoor unit to the outdoor unit (size of wire and wiring method, etc.). Each wire must be firmly connected. No wire should be allowed to touch refrigerant tubing, the compressor, or any moving part.

Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram. The indoor unit draws its power from the outdoor unit. Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone, security system, or intercom any closer than 3' 4" (1 m) from the power cable and wires between the indoor and outdoor units. Electrical noise may affect the operation.

To avoid the risk of electrical shock, each air conditioner unit must be grounded. For the installation of a grounding device, please observe local electrical codes. Grounding is necessary, especially for units using inverter circuits, in order to release charged electricity and electrical noise caused by high tension. Otherwise, electrical shock may occur. Place a dedicated ground more than 7' (2 m) away from other grounds and do not have it shared with other electric appliances.

Table 2

AWG

Fuse or Circuit

Breaker Capacity

20A

(#14)

131 (Max.)

(#12)

230 (Max.)

(#14)

65 (Max.)

#...AWG (American Wire Gauge)

C1872, C2472, CL1872, CL2472

Model

Fig. 6

CAUTION

WARNING

NOTE

WIRING SYSTEM DIAGRAM

7-3. Remote Control Unit Installation Position

The remote control unit can be operated from either a non-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places:

In direct sunlight Behind a curtain or other place where it is covered More than 26' (8 m) away from the air conditioner In the path of the air conditioner’s airstream Where it may become extremely hot or cold Where it may be subject to electrical or magnetic interference Where there is an obstacle between the remote control unit and the air conditioner (since a check signal is sent from the remote control unit every 5 minutes)

7-3-1. Mounting on a Wall

Before mounting the remote control unit, press the ON/OFF operation button at the mounting location to make sure that the air conditioner operates from that location. The indoor unit should make a beeping sound to indicate that it has received the signal.

Fig. 7

To take out the remote control unit, pull it forward.

Hole

Remote control unit mount

Rear side

Press

Set in place

To prevent loss of the remote control unit, you can connect the remote control unit to the mount by passing a string through the remote control unit and attachment hole.

Mounting screws 5/32 × 5/8"(4 × 16mm) (included)

Fig. 8a

Fig. 8b

Fig. 8c

1HR. TIMER

ON/OFF operation

ACL (Reset)

ION

button

OPERATION lamp

TIMER lamp QUIET lamp ION lamp

After turning on power to the air conditioner, use the remote controller and follow the steps below to conduct the test run.

(1) Set the remote controller in Test Run mode.

(Fig. 8a)

Press and hold the ION button.

Then press and hold the 1HR TIMER button.

At the same time, press the ACL (reset) button once. Use a pointed object such as the tip of a pen to press the ACL button.

After a few seconds, " " appears and "oP-1" blinks in the remote controller display area. (Fig. 8b)

d)e)Release the 1HR TIMER button.

Release the ION button.

(2) Start Cooling mode test run by pressing the ON/OFF

operation button of the remote controller. (Fig. 8a)

This starts the fan producing uncooled forced air with the 4 indicator lamps (OPERATION lamp, TIMER lamp, QUIET lamp, and ION lamp) on the main unit blinking. (Fig. 8c)

After 3 minutes, the system shifts into cooling operation, and cool air will start to be felt. Cool mode test run is unaffected by the room temperature.

(3) Press the ON/OFF operation button of the remote controller

again to stop the test run. (Fig. 8a)

(4) Finally press the ACL (reset) button of the remote controller

to release it from Test Run mode to return to normal mode. (Fig. 8a)

" " and "oP-1" will disappear from the remote controller display area.

After the test run is completed, be sure to press the ACL (reset) button to return to normal mode. The air conditioner will not operate correctly if this is not done.

7-4. How to Test Run the Air Conditioner

IMPORTANT

Air intake grille

Grille

Fig. 9a

Fig. 9b

Cover

Thermistor

Fig. 10a

Thermistor

Fig. 10b

Fig. 11a

Tab

Fig. 11b

Fig. 12b

Groove

Fig. 12a

7-5. Remove the Grille to Install the

Indoor Unit

Basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps as given below.

How to remove the grille

(1)

(2) (3)

(4) (5)

(6)

Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you. (Fig. 9a) Remove the 3 screws. (Fig. 9b) Remove the screw on the right side cover plate and open the cover. (Fig. 10a) Take out the thermistor from the grille. (Fig. 10b) Press the 3 tabs at the top of the grille and the 3 tabs on the front face to separate the grille from the frame. (Fig. 11a) Pull the grill toward you to remove it.

How to replace the grille

(1)

(2)

(3) (4) (5)

(6) (a)

(b)

When installing the grille, place the bottom of the grille into the frame first. (Fig. 11b) Then insert the tabs on the top of the grille and on the front face into the frame. Make sure that the grille and frame are firmly fitted together by engaging the tabs. Attach the thermistor on the grille. (Fig. 10a) Close the cover and replace the screw. (Fig. 10a) Affix the grille with the 3 previously removed screws. (Fig. 9b) Install the air intake grille. Allow the edge of the air intake grille to slide into the top of the indoor unit, and then insert it all the way inside. (Fig. 12a) Press the bottom right and left corners and center of the air intake grille to attach it to the indoor unit. (Fig. 12b)

Attach so that the round pins at the top right and left corners of the air intake grille are inserted into the grooves at the top right and left of the indoor unit.

NOTE

1HR. TIMER button

ON/OFF operation button

ACL (Reset) button

ION button

8. MAINTENANCE

8-1. Address Setting of the Remote

Control Unit

The address can be set in order to prevent interference between remote controllers when two Sanyo indoor units are installed near each other. The address is normally set to "A." To set a different address, it is necessary to change the address on the second remote controller.

Once changed, you cannot restore the original address setting of the air conditioner.

(1) Switch on the power source.

(2) Break the address-setting tab marked "A" on the

second remote controller to change the address (Fig. 13). When the tab is removed, the address is automatically set to B (Fig. 14).

(3) Press and hold the remote controller ION button

and 1 HR TIMER button. At the same time, press the ACL(reset) button. Use a thin object such as the tip of a pen to press the ACL button. When this has been done, "oP-1" (test run) appears, blinking, in the remote controller clock display area.

(4) Each time the 1 HR TIMER button is pressed, the

display changes as shown below. Press this button 2 times to change the display to "oP-7" (address setting). (Fig. 15)

(5) "oP-7" has now been selected for address setting.

(6) Press the ON/OFF operation button on the remote

controller. (Fig. 15) Check that the "beep"signalreceived sound is heard from the second indoor unit (approximately 5 times). The sound you hear is the signal that the remote controller address has been changed.

(7) Finally press the remote controller ACL (reset)

button to cancel the blinking "oP-7" display. (Fig.

15)

Changing of the second remote controller address is now completed.

NOTE

Fig. 13

Fig. 14

Fig. 15

Tab

ACL button

Test run mode

Self-diagnostic mode

Address setting mode

One of the two types of connectors illustrated at left is used. Their basic structure is the same for each.

How to Disconnect

Hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside. Always hold the cover to disconnect. (See illustration at left.) For the connector without the resin cover, push the lock in the direction of "2" while pulling it off.

How to Connect

In order to connect, hold the resin cover of the connector and push it in. Confirm the click sound for the inside lock.

Pull the cover upward

When the cover is pulled upward, the lock is released with the sequence of 1 and 2.

8-2. Disconnecting and Connecting Positive Connector for Outdoor Unit

Emergency operation SENSOR DRY

During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment.

SENSOR DRY operation

DRY operation is as shown in the figure below.

PAM- control

In order to further improve inverter performance, control is

switched between PWM control at low operation speeds, and PAM control at high operation speeds, making the most effective use of power.

The compressor operation frequency varies. The indoor fan operates with 1/f fluctuation.

The compressor operates at a low operating frequency. The indoor fan operates with 1/f fluctuation.

Monitoring operation takes place when the room temperature

is below 59°F

(15°C), or more than 5°F(3°C) below the set

temperature.

When the monitoring range is entered, the compressor stops,

and the indoor fan operates with 1/f fluctuation.

DRY A

DRY B

Monitor

Conditions are monitored at all times when the room temperature is below 59°F(15°C).

Load

COOL zone

A zone

B zone

Emergency operation is available when the remote controller malfunctions, has been lost, or otherwise cannot be used.

The set temperature is 4°F(2°C) below the detected room

temperature in the case of cooling operation.

(GREEN) (Lamp Off)

COOL STOP

To operate the system, press the OPERATION button, which is also used as the receiver, below the unit display. Each time this button is pressed, the OPERATION lamp changes color to indicate the type of operation. Select the desired type of operation.

The Sensor Dry operation during the Low Ambient Cooling Mode (outside air temperature:59°F(15°C) or lower) is as follows.

The compressor operates a cycle of 3 minutes ON and 6 minutes OFF repeatedly.

NOTE

DRY A

DRY Band

9. FUNCTIONS

9-1. Operation Functions

(CLxx models only)

HIGH POWER

NIGHT SETBACK

Lamp colors

Timer backup

This function acts to raise the power but keeps the AC system in the same operating mode. This function is set with the HIGH POWER button on the remote controller. (It can be set regardless of the temperature and fan speed settings.)

HIGH POWER operation from remote controller

The unit operates at maximum output for 30 minutes, regardless of the desired temperature. The fan speed is 1 step above "High."

OPERATION lamp

When HIGH POWER operation ends, the unit operates at low Hz for 5 minutes, regardless of the thermostat OFF conditions.

When in DRY mode, operation is in the cooling zone.

Operation stops if there are no operator controls for 25 hours or

longer after unit operation switched from OFF to ON by use of ON timer operation.

Frequency

MAX

Start End

Time

30 min. 5 min.

Setting temperature

Press the NIGHT SETBACK button

When NIGHT SETBACK operation is set, the temperature and

fan speed settings will be adjusted automatically to allow comfortable sleep.

When NIGHT SETBACK operation is set, " mark" appears on

the remote controller. The main unit display lamp also becomes dimmer.

COOL and DRY modes

When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2°F(1°C) when 30 minutes have passed after the selection was made, and then another 2°F(1°C) after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

TIMER lamp Green

QUIET lamp Green

ION lamp Green

DRY operation Orange COOL operation Green FAN operation Green

NOTE

30 min. 30 min.

Time

2°F(1°C)

Compressor discharge temperature control

Freeze prevention

During COOL or DRY operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below.

Freeze-prevention operation is engaged when the temperature of the indoor heat exchanger is below 43°F(6°C).

Restart after freeze-prevention operation occurs when the temperature of the indoor heat exchanger reaches 46°F(8°C) or above.

Area: Automatic capacity control

When the temperature drops below Point A, the operation frequency is reduced by a certain proportion.

Area: Frequency increase is prohibited.

When the temperature reaches Point C or above, freezing prevention is ended and control is the same as in the

area.

* When the temperature drops to below 4°F(2°C) (continuously

for 2 minutes or longer), the compressor stops. Once the freeze condition is detected, the air conditioner will work less than the maximum frequency until it is turned off.

The Freeze Prevention Control during the Low Ambient Cooling Mode (outside air temperature:59

°F(15°C)

or lower) is as follows. The compressor stops when the temperature of indoor heat exchanger becomes less than 36°F(2°C). The compressor restarts when the temperature of indoor heat exchanger becomes 46°F(8°C) or higher.

abcd

Indoor heat exchanger

temperature (°F)

This function controls the operation frequency to prevent the compressor discharge temperature from rising more than a specified temperature.

Area: Automatic capacity control.

When the temperature rises above Point A, the operation frequency is reduced at a specified rate.

Area: Further frequency increase is prohibited.

When the temperature falls below Point B, prevention of a rise in frequency is released and the air conditioner operates as in

area.

* The compressor will stop if the temperature of the compressor

discharge exceeds 248°F(120°C) due to shortage of gas or other reason.

Approx.

214

(101)

abc d

Compressor discharge temperature °F(°C)

Approx.

201 (94)

NOTE

9-2. Protective Functions

This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation is interrupted automatically to control the electrical current for operation.

When the cause of the increase in electrical current is rectified, the system will resume operation in the original mode.

Cooling Dry

Peak current cut-off trips 22.5

Hz down 14.0

(A)

CT (Peak current cut-off control)

(CLxx models only)

1HR. TIMER button

ON/OFF operation button

ACL (Reset) button

ION button

< Clock display >

Test run mode

Self-diagnostics mode

10. TROUBLESHOOTING

10-1. Precautions before Performing Inspection or Repair

NOTE

PROCEDURE

After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.

High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be careful not to touch any electrified parts before the controller LED (red) turns OFF.

If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.

1: If the operation lamp blinks every 0.5 seconds immediately when the

power is turned ON, there is an external ROM (OTP data) failure on the indoor circuit board, or a ROM socket insertion problem, or the ROM has not been installed.

2: The failure mode is stored in memory even when the power is not ON.

Follow the procedure below to perform diagnostics.

10-2. Method of Self-Diagnostics

Follow the procedure below to perform detailed trouble diagnostics.

Step 1: Press and hold the remote controller ION button and 1 HR TIMER

button. At the same time, press the ACL (reset) button. Use a pointed object such as the tip of a pen to press the ACL button.

When this has been done, "oP-1" (test run) appears, blinking, in

the remote controller clock display area.

Step 2: Next, press the 1 HR TIMER button once to change the display

from "oP-1" to "oP-3" (self-diagnostics). (The display continues to blink.)

Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.

• The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to report the existence of sensor trouble or a protective operation. (The lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.) Self-diagnostics is completed when the buzzer sounds 3 short beeps.

• A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each, beginning with the most recent report. Following this display the lamps turn OFF. In order to view the self-diagnostics results again, press the ON/OFF button again.

• The 3 lamps remain OFF if no trouble has occurred.

<IMPORTANT> After self-diagnostics is completed, be sure to press the

ACL (reset) button to return to normal mode. The air conditioner will not operate if this is not done.

After turning on power to the air conditioner, use the remote controller and follow the steps below to execute self-diagnostics.

Indication on indoor unit

....

OFF

Timer Operation

Code Diagnostics item Diagnostics contents

Since the indications cover various units, the corresponding parts listed below may not be present in some models.

S01

Room temperature sensor failure

Indoor heat exchanger sensor failure

Humidity sensor failure

Compressor temperature sensor failure

Outdoor heat exchanger sensor failure

Outdoor air temperature sensor failure

Indoor/outdoor communications failure (serial communications)

Outdoor unit external ROM (OTP data) failure

Peak current cut-off

• HIC circuit failure

• Power Tr (transistor) circuit failure

PAM circuit failure Active circuit failure

Outdoor system communications failure Outdoor high-pressure SW OLR operation Outdoor power supply open phase Outdoor coil freezing

Compressor discharge overheat prevention activated.

Indoor fan operating failure

No-refrigerant protection

DC compressor drive circuit failure

Outdoor fan operating failure

Freeze-prevention operation activated.

4-way valve switching failure Indoor zero-cross failure

Outdoor electrical current detection failure

S02

S03

S04

S05

S06

S07

E01

E02

E03

E04

E05

E06

E07

E08

E09

E10

E11

E12

E13

....

Blinking

....

ON (Illuminated)

Quiet

(3) (2) (1)

(1) Sensor open circuit or short circuit (2) Contact failure at connector or open circuit at terminal crimping location

(short-circuit detection only for the humidity sensor)

(3) Indoor/outdoor circuit board failure

(1) Sensor open circuit or short circuit (2) Contact failure at connector or open circuit at terminal crimping location (3) Outdoor circuit board failure

Outdoor circuit board failure

(1) Mis-wiring (2) AC power failure (3) Blown fuse (4) Power relay failure (5) Indoor or outdoor circuit board failure

(1) HIC or power Tr failure (2) Outdoor fan does not turn. (3) Instantaneous power outage (4) Service valve not opened. (5) Outdoor fan blocked. (6) Continuous overload operation (7) Compressor failure (8) Outdoor circuit board failure

(1) External ROM data failure (2) Outdoor circuit board failure

(1) Instantaneous power outage (2) HIC or power transistor failure (3) Outdoor circuit board failure

(1) Outdoor circuit board failure (2) Outdoor power supply voltage failure

(1) Electric expansion valve failure (2) Capillaries choked (3) Shortage of refrigerant (4) Continuous overload operation (5) Outdoor fan does not rotate (6) Outdoor circuit board failure

(1) Fan motor failure (2) Contact failure at connector (3) Indoor circuit board failure

(1) 4-way valve failure (heat pump model only) (2) Outdoor circuit board failure

(1) Service valve not opened. (2) Shortage of refrigerant

(1) Open phase (2) Outdoor circuit board failure

(1) Fan motor failure (2) Contact failure at connector (3) Outdoor circuit board failure

(1) Mis-wiring (2) Blown fuse (3) Power relay failure (4) Open phase (5) Outdoor circuit board failure (6) Compressor failure

(1) Indoor fan system failure (2) Shortage of refrigerant (3) Low-temperature operation

REMOTE CONTROL receiver

(1) OPERATION lamp (2) TIMER lamp (3) QUIET lamp ION lamp

OPERATION button

INDOOR UNIT

(1) Self-diagnostics Lamps

(2) If the self-diagnostics function fails to operate

Check the indoor unit.

Is the fuse blown?

Replace the controller.

Replace the circuit

board or the fuse.

No indicators illuminate and the indoor fan does not rotate.

Check the power voltage.

Normal

Blown

10-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

(2) Checking the outdoor unit

(3) Checking the serial communications

Using the TEST/T-RUN terminals

ControlNo. Check items (unit operation)

T-RUN : Test run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60th (accelerates

operation by 60 times faster than normal).

Use the remote controller to operate the unit in "TEST run" mode. To determine whether the mode is currently in "TEST run" mode, check the 3 indicator lamps on the unit. If all 3 are blinking, the current mode is "TEST run."

If there are no problems with the above, then check the outdoor unit.

The rated voltage must be present between inter-unit wirings 1 and 2. Connect a 5 k ohm resistor between inter-unit wirings 2 and 3. When the

voltage at both ends is measured, approximately 12 to 15V DC must be output and the multimeter pointer must bounce once every 8 seconds. Or instead of measuring the voltage, you can insert an LED jig and check that the LED flickers once every 8 seconds.

•

ControlNo. Check items (unit operation)

Apply the rated voltage between outdoor unit terminals 1 and 2.

If there are no problems with the above, then check the indoor unit.

Tu rn the power OFF before performing short circuiting procedures.

Refer to the previous pages when performing system self-diagnostics.

So that the check can be made quickly, indicators blink at first communication after power ON.

Before performing the above checks, perform “TEST run” operation, and check that the rated voltage is output to terminals 1 and 2 on the outdoor unit. If it is not output, there is a failure related to the indoor unit power.

1 The control panel LED (red) must illuminate.

Short-circuit the outdoor unit COM terminal to the T-RUN terminal.

2 The compressor, fan motor, and 4-way valve must all turn on.

•

TEST/T-RUN terminals

(TEST)/MV T-RUN COM

For the "Test run" procedure, refer to 7.4" How to Test Run the Air Conditioner".

Probable location of malfunction

Indoor unit circuit board failure

Outdoor unit circuit board failure

Failure (open circuit, contact failure, etc.) in the inter-unit wirings

Outdoor unit circuit board failure

Short-circuit terminals 2 and 3 on the outdoor unit terminal plate.

Short-circuit terminals 2 and 3 on the indoor unit terminal plate.

Initial self-diagnostics

Control 1 Control 2

....

OFF

....

Blinking

....

Illuminated

Quiet

( 3 )

Timer

( 2 )

Operation

( 1 )

Quiet

( 3 )

Timer

( 2 )

Operation

( 1 )

Quiet

( 3 )

Timer

( 2 )

Operation

( 1 )

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit

operates. (There is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.)

[Trouble symptom 4] Fan motor rotation speed does not change during indoor unit operation.

[Trouble symptom 5] Fan motor rotation speed varies excessively during indoor unit operation.

(Remedy for symptom 3 to 5)

It is not possible to identify whether the trouble is indoor unit controller trouble or motor trouble. Therefore, first replace the indoor unit controller, then (if necessary) replace the DC motor.

10-4. Trouble Diagnosis of Fan Motor

10-4-1. Indoor Fan Motor

This indoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. To perform diagnosis, operate the unit in cooling mode with indoor fan speed "High". Next, make sure that the indoor unit receive the signals from the remote controller when the ON/OFF operation button is pressed.

[Trouble symptom 1] The fan does not stop when the unit stops. Indoor unit controller trouble.

[Trouble symptom 2] The fan motor does not rotate when the unit is operating.

(Diagnostic procedure)

* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the indoor

unit controller (3 locations).

(Diagnostic results)

All of the above measured values are normal. Fan motor trouble (Replace the motor.) Any one of the above measured values is not normal. Indoor unit controller trouble (Replace the controller .)

(Reference) DC motor connector pin arrangement

Pin 1: Vm (red) Pin 2: Not used Pin 3: Gnd (black) Pin 4: Vcc (white) Pin 5: Vs (yellow) Pin 6: PG (blue)

Important:

(A) Turn OFF the power before connecting or disconnecting the motor connectors. (B) When performing voltage measurement at the indoor controller connector for (3) in the table

below, the DC motor will trip and voltage output will stop approximately 1 minute after operation is started. For this reason, to measure the voltage again, turn OFF the unit once using the remote controller, and then start the air conditioner again.

(1) Vm-Gnd: Between pin 1 and pin 3 (2) Vcc-Gnd: Between pin 4 and pin 3 (3) Vs-Gnd: Between pin 5 and pin 3

Measurement location

DC 230 V or more DC 14 V or more Fluctuation between DC 1.0 to 4.3 V

Normal value

10-4-2. Outdoor Fan Motor

This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. To perform diagnosis, follow the instructions in "(2) Checking the Outdoor Unit" on the previous page and set the outdoor unit to Test Run mode (compressor ON, outdoor fan motor ON).

[Trouble symptom 1] The fan does not stop when the outdoor unit stops. Outdoor unit controller trouble

[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.

(Diagnostic procedure)

* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor

unit controller (3 locations).

(Diagnostic results)

All of the above measured values are normal. Fan motor trouble (Replace the motor.) Any one of the above measured values is not normal. Outdoor unit controller trouble

(Replace the controller .)

(Reference) DC motor connector pin arrangement

Pin 1: Vs (white) Pin 2: Not used Pin 3: Not used Pin 4: Gnd (black) Pin 5: Vcc (red) Pin 6: FG (blue) Pin 7: Vsp (yellow)

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the outdoor

unit operates. (There is trouble in the system that provides feedback of motor rotation speed from the motor to the outdoor unit controller.)

[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.

[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.

(Remedy for symptom 3 to 5)

It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble. Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.

Important:

(A) Turn OFF the power before connecting or disconnecting the motor connectors. (B) When performing voltage measurement at the outdoor controller connector for (3) in the table

below, the DC motor will trip and voltage output will stop approximately 10 seconds after operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor unit power, then follow the instructions in "Checking the Outdoor Unit" and again set the unit to Test Run mode.

(1) Vs-Gnd: Between pin 1 and pin 4 (2) Vcc-Gnd: Between pin 5 and pin 4 (3) Vsp-Gnd: Between pin 7 and pin 4

Measurement location

DC 230V or more DC 14V or more After fluctuating 4 times between DC 1.0 to 4.3V (1 sec. ON) and DC 0 V (1 sec. OFF), the DC motor trips.

Normal value

10-5. Noise Malfunction and Electromagnetic Interference

An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices.

A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these effects may still occur. Please pay attention to the points listed below.

(1) Noise malfunction

This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.

Locations most susceptible to noise

1. Locations near broadcast stations where there are strong electromagnetic waves

2. Locations near amateur radio (short wave) stations

3. Locations near electronic sewing machines and arc-welding machines

Correction

(The fundamental concept is to make the

system less susceptible to noise.)

- Insulate for noise or

distance from the noise source. -

1. Use shielded wires.

2. Move unit away from the noise source.

Trouble

Either of the following trouble may occur.

1. The unit may stop suddenly during operation.

2. Indicator lamps may flicker.

(2) Electromagnetic interference

This refers to noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through space and returns to the electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.

Locations most susceptible to noise

1. A television or radio is located near the A/C and A/C wiring.

2. The antenna cable for a television or radio is located close to the A/C and A/C wiring.

3. Locations where television and radio signals are weak.

Correction

1. Select a separate power source.

2. Keep the A/C and A/C wiring at least 1 meter away from wireless devices and antenna cables.

3. Change the wireless device’s antenna to a highsensitivity antenna.

4. Change the antenna cable to a BS coaxial cable.

5. Use a noise filter (for the wireless device).

6. Use a signal booster.

Trouble

1. Noise appears in the television picture, or the picture is distorted.

2. Static occurs in the radio sound.

Insulation tester

Probe

Clip

Ground wire

Terminal plate

Copper tube or metallic part

Clip

Insulation tester

Probe

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Copper tube or metallic part

Clip

Insulation tester

Probe

Clip

Insulation tester

Probe

Metallic part

From fan motor, compressor and other parts

11. CHECKING ELECTRICAL COMPONENTS

11-1. Measurement of Insulation

Resistance

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

11-1-1. Power Supply Cord

Clamp the grounding wire of power cord with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the two power wires. (Fig. 1) Then also measure the resistance between the grounding and other power terminals. (Fig. 1)

11-1-2. 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 each terminal screw on the terminal plate. (Fig. 2) Note that the ground line terminal should be skipped for the check.

11-1-3. Outdoor Unit

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 each terminal screw where power supply lines are connected on the terminal plate. (Fig. 2)

11-1-4. Measurement of Insulation

Resistance for Electrical Parts

Disconnect the lead wires of the desired electric part from terminal plate, capacitor, etc. Similarly disconnect the connector. Then measure the insulation resistance. (Figs. 3 and 4)

Refer to Electric Wiring Diagram. If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin.

NOTE

Fuse

PCB Ass'y

Fig. 5

Fig. 6

Fuse

11-2. Checking Continuity of Fuse

on PCB Ass'y

Remove the PCB Ass'y from the electrical component box. Then pull out the fuse from the PCB Ass'y. (Fig. 5)

Check for continuity using a multimeter as shown in Fig. 6.

12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

12-1. Characteristics of New Refrigerant R410A

12-1-1. What is New Refrigerant R410A?

R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22.

12-1-2. Components (mixing proportions)

HFC32 (50%) / HFC125 (50%)

12-1-3. Characteristics

Less toxic, more chemically stable refrigerant

The composition of refrigerant R410A changes whether it is in a gaseous phase or liquid phase. Thus, when there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change in composition of the remaining refrigerant.

Therefore, do not add new refrigerant.

Instead, recover the remaining refrigerant with the refrigerant recovery unit. Then, after evacuation, totally recharge the specified amount of refrigerant with the new refrigerant at its normal mixed composition state (in liquid phase).

When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state.

Thus, always charge the refrigerant while it is in liquid phase.

Ether-type oil is used for compressor oil for R410A-type units, which is different from the mineral oil used for R22. Thus more attention to moisture prevention and faster replacement work compared with conventional models are required.

CAUTION

Tubing precautions

Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation.

Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, since air conditioners with R410A are subject to higher pressure than those using R22 and R407C.

No addition of compressor oil for R410A

No additional charge of compressor oil is permitted.

No use of refrigerant other than R410A

Never use a refrigerant other than R410A.

If refrigerant R410A is exposed to fire

Through welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be sure to provide ample ventilation during installation work.

Caution in case of R410A leak

Check for possible leak points with the special leak detector for R410A. If a leak occurs inside the room, immediately provide thorough ventilation.

Flare tool for R410A

Conventional flare tool (R22)

Spacer

12-2. Checklist before Servicing

Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ between these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount of extrusion) by using the flare spacer.

Size of flare

Specification A

Diameter of tube D

Dia.1/4" (6.35 mm)

Dia.3/8" (9.52 mm)

Dia.1/2" (12.7 mm)

Dia.5/8" (15.2 mm)

Flare tool for R410A Conventional flare tool (for R22)

0 to 0.0196"

(0 to 0.5 mm)

0.0472"

(1.2 mm)

12-3. Tools Specifically for R410A

For servicing, use the following tools for R410A

Gauge manifold

Charging hose

Gas leak detector

Refrigerant cylinder

Charging cylinder

Refrigerant recovery unit

Vacuum pump with anti-reverse flow (*1)

(Solenoid valve-installed type, which prevents oil from flowing back into the

unit when the power is off, is recommended.)

Vacuum pump (*2)...can be used if the following adapter is attached.

Vacuum pump adapter (reverse-flow prevention adapter) (*3).

(Solenoid valve-installed adapter attached to a conventional vacuum pump.)

Electronic scale for charging refrigerant

Flare tool

Bender

Torque wrench

Cutter, reamer

Welding tool, nitrogen gas cylinder

Tools specifically for R410A

Tool Distinction Tool Name

Tools which can be com-

monly used for R22,

R407C, and R410A

CAUTION

The above tools specifically for R410A must not be used for R22 and R407C. Doing so will cause malfunction of the unit.

For the above vacuum pump (*1, *2) and vacuum pump adapter (*3), those for R22-type units can be used for R410A-type. However, they must be used exclusively for R410A and never alternately with R22 and R407C.

For details on tubing installation procedures, refer to the installation manuals attached to the indoor unit and outdoor unit.

To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, shape and external diameter of the service port screw has been altered. <External diameter of service port> R410A : 5/16"

R22, R407C : 1/4"

12-4. Tubing Installation Procedures

When the tubes are connected,

always apply HAB oil on the flare portions to improve the sealing of tubing.

The following is the HAB oil generally used:

Esso: ZERICE S32

NOTE

12-5. In Case of Compressor Malfunction

CAUTION

Should the compressor malfunction, be sure to make the switch to a replacement compressor as quickly as possible.

Use only the tools indicated exclusively for R410A. See "12-3. Tools Specifically for R410A."

12-5-1. Procedure for Replacing Compressor

(1) Recovering refrigerant

Any remaining refrigerant inside the unit should not be released to the atmosphere, but recovered using the refrigerant recovery unit for R410A.

Do not reuse the recovered refrigerant, since it will contain impurities.

(2) Replacing Compressor

Soon after removing seals of both discharge and suction tubes of the new compressor, replace it quickly.

(3) Checking for sealing

Use nitrogen gas for the pressurized gas, and never use a refrigerant other than R410A. Also do not use oxygen or any flammable gas.

(4) Evacuation

Use a solenoid valve-installed vacuum pump

so that even if power is cut off in the middle of evacuation of air due to a power interruption, the valve will prevent the pump oil from flowing back.

The equipment may be damaged if moisture remains in the tubing, thus carry out the evacuation thoroughly.

When using a vacuum pump with exhaust air volume more than 0.883 cu.ft./min. and ultimate vacuum pressure rate of 50 micron Hg.

Standard time for evacuation

(1) Recover refrigerant

(2) Replace compressor

(3) Check for sealing

(4) Evacuation

(5) Recharge

Length of tubing

Evacuation time

Less than 33 ft. (10 m)

More than 10 minutes

More than 33 ft. (10 m)

More than 15 minutes

Valve

Single valve

Charge liquid refrigerant with cylinder in up-side-down position.

Single valve (with siphon tube)

Charge with cylinder in normal position.

Liquid

Valve

Liquid

Charging

cylinder

Open

Refrigerant

cylinder

Liquid

NO!

CAUTION

Never charge a large amount of liquid refrigerant at once to the unit. This may cause damage to the compressor.

CAUTION

To prevent the composition of R410A from changing, never bleed the refrigerant gas into the atmosphere while transferring the refrigerant. (Fig. 3)

(5) Recharging

Be sure to charge the specified amount of refrigerant in liquid state

using the service port of the wide tube service valve. The proper amount is listed on the unit's nameplate.

When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.

When charging with a refrigerant cylinder, use an electronic scale for charging refrigerant. In this case, if the volume of refrigerant in the cylinder becomes less than 20% of the fully-charged amount, the composition of the refrigerant starts to change. Thus,

do not use the refrigerant if the amount in the charging cylinder is less than 20%.

Also, charge the minimum necessary amount to the charging cylinder before using it to charge the air conditioning unit.

Example:

In case of charging refrigerant to a unit requiring

1.68 lb. (0.76 Kg) using a capacity of a 22 lb. (10 Kg) cylinder, the minimum necessary amount for the cylinder is:

1.68 + 22 0.20 = 6.08 lb. (0.76 + 10 0.20 = 2.76 Kg)

For the remaining refrigerant, refer to the instructions of the refrigerant manufacturer.

If using a charging cylinder, transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder.

Prepare an evacuated charging cylinder beforehand.

Do not use the refrigerant if the amount in the charging cylinder is less than 20%.

Configuration and characteristics of cylinders

Fig. 1

Fig. 2

Fig. 3

Length of tubing

Evacuation time

Less than 33 ft. (10 m)

More than 10 minutes

More than 33 ft. (10 m)

More than 15 minutes

12-6. In Case Refrigerant is Leaking

CAUTION

Never attempt to charge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described below to locate points of leaks and carry out repairs, then recharge the refrigerant.

(1) Detecting Leaks

Use the detector for R410A to locate refrigerant leak points.

(2) Recovering refrigerant

Never release the gas to the atmosphere; recover residual refrigerant using the refrigerant recovery unit for R410A, instead.

Do not reuse the recovered refrigerant because its composition will have been altered.

(3) Welding leaking points

Confirm again that no residual refrigerant exists in the unit before starting welding.

Weld securely using flux and wax for R410A.

Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen (N2) in the refrigerant circuit of the unit. Leave ends of tubes open during welding.

(4) Checking for sealing

Use nitrogen gas for the pressurized gas, and never use a refrigerant other than R410A. Also do not use oxygen or any flammable gas.

(5) Evacuation

Use a solenoid valve-installed vacuum pump

so that even if power is cut off in the middle of evacuation of air due to a power interruption, the valve will prevent the pump oil from flowing back.

The equipment may be damaged if moisture remains in the tubing, thus carry out the evacuation thoroughly.

When using a vacuum pump with exhaust air volume more than 0.883 cu.ft./min. and ultimate vacuum pressure rate of 50 micron Hg.

Standard time for evacuation

(6) Recharging

Recharge unit in the same manner explained on the previous page "(5) Recharging."

(2) Recover refrigerant

(3) Weld leaking points

(4) Check for sealing

(5) Evacuation

(6) Recharge

(1) Detect leaks

12-7. Charging Additional Refrigerant

12-7-1. When Tubes are Extended

Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit.

Charge additional refrigerant in liquid state only.

12-8. Retro-Fitting Existing Systems

12-8-1. Use of Existing Units

Never use new refrigerant R410A for existing units which use R22.

This will cause the air conditioner to

operate improperly and may result in a hazardous condition.

12-8-2. Use of Existing Tubing

If replacing an older unit that used refrigerant R22 with a R410A unit,

do not use its existing tubing.

Instead,

completely new tubing must be used.

CAUTION

Never charge additional refrigerant if refrigerant is leaking from the unit. Follow instructions given in "12-6. In Case Refrigerant is Leaking" and completely carry out repairs. Only then should you recharge the refrigerant.

INSTRUCTION MANUAL

KS1872 + C1872

+ CL1872

KS2472 + C2472

+ CL2472

(OI-852-6-4180-800-00-0)

APPENDIX

Features

This air conditioner is an inverter type unit that automatically adjusts capacity as appropriate. Details on these functions are provided below; refer to these descriptions when using the air conditioner.

• Microprocessor Controlled Operation

The interior compartment of the remote control unit contains several features to facilitate automatic operation, easy logically displayed for easy use.

• Simple One-touch Wireless Remote Control

The remote control unit has several features to facilitate automatic operation.

• 24-Hour ON or OFF Timer

This timer can be set to automatically turn the unit on or off at any time within a 24 hour period.

• 1-Hour OFF Timer

This timer can be set to automatically turn off the unit at any time after one hour.

• Night Setback

Pressing this button changes the setting of the room temperature thermostat, allowing you to set the temperature at whatever level that you find comfortable.

• Automatic and 3-step Fan Speed

Auto/High/Medium/Low

• Air Sweep Control

This function moves a flap up and down in the air outlet, directing air in a sweeping motion around the room and providing comfort in every corner.

• Automatic Restart Function for Power Failure

Even when power failure occurs, preset programmed operation can be reactivated once power resumes.

• High Power Operation

The unit operates at maximum output for 30 minutes, regardless of the desired temperature. The fan speed is 1 step above “High”.

• Quiet Operation

The fan rotates slower than the fan speed setting to provide a quieter operating sound.

• ION Operation

While it is operating, the unit generates negative ions that freshen up the air in the room.

• Anti-Mold Filter

This unit is equipped with an anti-mold filter that inhibits the growth of mold and bacteria.

• Air Clean Filter

An air filter that eliminates unpleasant odors and cleans the air is available. Purchase a replacement filter at your local dealer. (model STK-FDXB)

• Auto. Flap Control

This automatically sets the flap to the optimum position during cooling and drying operation.

OI-800-2-EG

Contents

Features............................................................................................................ 2

Product Information........................................................................................... 3

Alert Symbols.................................................................................................... 3

Installation Location .......................................................................................... 4

Electrical Requirements .................................................................................... 4

Safety Instructions............................................................................................. 4

Names of Parts ................................................................................................. 5

Using the Remote Control Unit ....................................................................... 10

Operation with the Remote Control Unit ........................................................ 12

1. Operation ............................................................................................... 12

2. Adjusting the Fan Speed........................................................................ 13

3. Fan Only................................................................................................. 13

4. Night Setback Mode............................................................................... 14

5. QUIET Mode .......................................................................................... 15

6. HIGH POWER Mode ............................................................................. 15

7. ION Mode............................................................................................... 15

Special Remarks............................................................................................. 16

Setting the Timer............................................................................................. 17

Using the 1-Hour OFF Timer .......................................................................... 19

Tips for Energy Saving.................................................................................... 19

Adjusting the Airflow Direction ........................................................................ 20

Operation without the Remote Control Unit .................................................... 21

Care and Cleaning .......................................................................................... 21

Troubleshooting............................................................................................... 24

Operating Range............................................................................................. 24

Page

Product Information

If you have problems or questions concerning your Air Conditioner, you will need the following information. Model and serial numbers are on the nameplate on the bottom of the cabinet.

Model No. ______________________ Serial No. ____________________ Date of purchase ________________________________________________ Dealer’s address ________________________________________________

Phone number ________________

Alert Symbols

The following symbols used in this manual, alert you to potentially dangerous conditions to users, service personnel or the appliance:

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.

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Installation Location

• We recommend that this air conditioner be installed properly by qualified

installation technicians in accordance with the Installation Instructions provided with the unit.

• Before installation, check that the voltage of the electric supply in your home or

office is the same as the voltage shown on the nameplate.

• Do not install this air conditioner where there are fumes or flammable gases, or in an extremely humid space such as a greenhouse.

• Do not install the air conditioner where excessively high heat-generating objects are placed.

Avoid: To protect the air conditioner from heavy corrosion, avoid installing the outdoor

unit where salty sea water can splash directly onto it or in sulphurous air near a spa.

Electrical Requirements

1. All wiring must conform to the local electrical codes. Consult your dealer or a qualified electrician for details.

2. Each unit must be properly grounded with a ground (or earth) wire or through the supply wiring.

3. Wiring must be done by a qualified electrician.

CAUTION

Safety Instructions

• Read this Instruction Manual carefully before using this air conditioner. If you still have any difficulties or problems, consult your dealer for help.

• This air conditioner is designed to give you comfortable room conditions. Use this only for its intended purpose as described in this Instruction Manual.

• Never use or store gasoline or other flammable vapor or liquid near the air conditioner — it is very dangerous.

• This air conditioner has no ventilator for intaking fresh air from outdoors. You must open doors or windows frequently when you use gas or oil heating appliances in the same room, which consume a lot of oxygen from the air. Otherwise there is a risk of suffocation in an extreme case.

• Do not turn the air conditioner on and off from the power mains switch. Use the ON/OFF operation button.

• Do not stick anything into the air outlet of the outdoor unit. This is dangerous because the fan is rotating at high speed.

• Do not let children play with the air conditioner.

• Do not cool the room too much if babies or invalids are present.

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Names of Parts

Air intakes

Air outlet

Remote control unit

Refrigerant tubes

OUTDOOR UNIT

INDOOR UNIT

Drain hose

Air outlet

NOTE

Air Intake Air from the room is drawn into this section and passes through air filters which

Air Outlet Conditioned air is blown out of the air conditioner through the air outlet.

Remote Control Unit The wireless remote control unit controls power ON/OFF, operation mode

Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which

Drain Hose Moisture in the room condenses and drains off through this hose.

This illustration is based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected.

This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote control unit.

remove dust.

selection, temperature, fan speed, timer setting, and air sweeping.

refrigerant gas flows.

Outdoor (Condensing) Unit The outdoor unit contains the compressor, fan motor, heat exchanger coil, and

other electrical components.

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IMPORTANT

Avoid using radio equipment such as mobile phone near (within 4 ft.) the remote control receiver. Some radio equipment may cause malfunction of the unit.

If the trouble happens, disconnect power and restart the air conditioner after a few minutes.

Unit Display and Operation Button

INDOOR UNIT

QUIET

REMOTE CONTROL receiver

OPERATION lamp TIMER lamp QUIET lamp ION lamp

OPERATION button

REMOTE CONTROL receiver This section picks up infrared signals from the remote control unit (transmitter).

OPERATION button When the remote control cannot be used, pressing this button enables cooling

operation.

Each time this button is pressed, the operation mode changes cyclically.

Cooling operation Stop

OPERATION lamp This lamp lights when the system is in the continuous DRY (orange), COOL

(green) and FAN (green) mode.

TIMER lamp This lamp lights when the system is being controlled by the timer.

QUIET lamp This lamp lights during operation in the QUIET mode.

ION lamp This lamp lights during operation in the ION mode while the indoor unit is

operating.

NOTE

The unit’s display lamps are dimmed during operation in the NIGHT SETBACK mode.

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Displayed when the

time display is set to

12-hour time.

Remote Control Unit (Display)

Displayed when transmitting data

Displayed when indoor unit sensor is in use

Displayed when setting temperature

Displayed when temperature is shown

Displayed when setting timer

Symbols

(1) Operation mode

MILD DRY..............................

COOL.....................................

FAN ........................................

(2) Fan speed

Automatic operation ...............

HIGH .....................................

MEDIUM.................................

LOW.......................................

(3) Temperature setting

60–86°F When set to 80 °F

temperature indication............

(4) Timer

24-hour clock with ON/OFF

program Timer........................

ON Timer................................

OFF Timer..............................

1-hour OFF Timer...................

(5) NIGHT SETBACK ..................

(6) Confirmation of

transmission...........................

(7) Auto. fla.dication.....................

Flap angle indication ..............

Sweep indication ....................

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(8) High power operation .............

(9) Quiet operation.......................

(10) ION operation.......................

Remote Control Unit

Tran smitte r

ION button

QUIET button

FAN SPEED selector button

FLAP button

ON TIME

setting

buttons

Advance button

Return button

CANCEL button

SENSOR button

Display

Sensor

(Cover closed)

ON/OFF operation button

1 HR. TIMER button

Temperature setting buttons (TEMP.)

MODE selector button

NIGHT SETBACK button

HIGH POWER button

Advance button

Return button

CLOCK button

Time display selector button

OFF TIME setting buttons

ADDRESS switch

Temperature display

selector button

NOTE

Tran smitte r When you press the buttons on the remote control unit, the mark appears in

Sensor A temperature sensor inside the remote control unit senses the room

Display Information on the operating conditions is displayed while the remote control unit

ION button : This button is for turning the negative ions generated during operation on

ON/OFF operation button This button is for turning the air conditioner on and off.

1 HR. TIMER button

(1-HOUR OFF TIMER)

The illustration above pictures the remote control unit after the cover has been opened.

the display to transmit the setting changes to the receiver in the air conditioner.

temperature.

is switched on. If the unit is turned off, FLAP setting and FAN SPEED setting are not displayed.

and off.

: When you press this button, regardless of whether the unit is operating or

stopping, the unit operates for one hour and then shuts down.

ACL button

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Remote Control Unit (continued)

Temperature setting buttons

(TEMP.)

Press the button to increase the set temperature. Press the button to reduce the set temperature. The temperature setting changes by 1 °C or 2 °F each time one of the TEMP. buttons is pressed.

QUIET button : When you press this button, the fan rotates slower than the fan speed

setting to provide a quieter operating sound.

MODE selector button Use this button to select DRY, COOL or FAN mode.

(DRY) : The air conditioner reduces the humidity in the room.

(COOL) : The air conditioner makes the room cooler.

(FAN) : The air conditioner works only as a circulation fan.

FAN SPEED selector button : The air conditioner automatically decides the fan speeds.

: High fan speed : Medium fan speed : Low fan speed

NIGHT SETBACK button For details, see “4. Night Setback Mode”. When you press this button in the DRY

or COOL mode, the mark appears in the display, and the remote control unit will automatically adjust the set temperature to save energy.

FLAP button Press this button either to select the setting of the airflow direction to the auto.

flap in each mode or one of the six possible positions manually or to select the sweep function which moves the flap up and down automatically.

: Auto flap setting: If selected in a cooling or dry operation, the flap is set at

position (7) in the following chart. : The airflow direction can be set manually. (six positions) : The flap moves up and down automatically.

NOTE

When you press the FLAP button, the air flow direction will be changed one by one as follows.

SWEEP

HIGH POWER button : If this button is pressed during DRY, COOL or FAN operation, the unit

operates at maximum output for 30 minutes, regardless of the desired

temperature.

The fan speed is 1 step above “High”.

ON TIME/OFF TIME setting

buttons

No display: The timer does not operate.

: The air conditioner starts at the set time. : The air conditioner stops at the set time.

: The air conditioner stops and starts, or starts and stops, at the

set times every day. For details, see “Setting the Timer”.

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Remote Control Unit (continued)

SENSOR button When you press this button (use a small-tipped object such as a ballpoint pen),

the mark will appear at the display. And the room temperature is detected by the sensor which is built into the indoor unit and the air conditioner is controlled accordingly.

NOTE

Temperature Display Selector button

Time Display Selector button This switches the time display between 24-hour time and 12-hour time.

ACL button (ALL CLEAR) Puts the remote control unit into pre-operation status. Always press this button

ADDRESS switch • The address switch changes to prevent mixing of signals from remote control

NOTE

The remote control unit sends the temperature signal to the air conditioner regularly at five minute intervals. If the signal from the remote control unit stops for more than 15 minutes due to the loss of the remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the remote control unit may differ from the temperature detected at the air conditioner’s position.

If the remote control is located near a heat source, such as a space heater or in direct sunlight, press the SENSOR button to switch to the sensor on the indoor unit.

This switches the temperature display between °C and °F.

after replacing the batteries.

units when two air conditioners are installed next to each other. Normally, the address switch is set to A. For more information, please contact the dealer where you made the purchase.

• Normally, the tabs on the remote control unit should not be bent.

Using the Remote Control Unit

How to Install Batteries

NOTE

1. Slide the cover in the direction

indicated by the arrow and remove it.

2. Install two AAA alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment.

3. Use a thin object such as the tip of a pen to press the ACL button.

ACL button

• The batteries last about six months, depending on how much you use the remote control unit. Replace the batteries when the remote control unit’s display fails to light, or when the remote control cannot be used to change the air conditioner’s settings.

• Use two fresh leak-proof type-AAA alkaline batteries.

• In replacing batteries, follow the instructions as mentioned in the subsection “How to Install Batteries”.

• If you do not use the remote control unit more than 1 month, take out the batteries.

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Using the Remote Control Unit (continued)

How to Use the Remote

Control Unit

Remote Control Unit

Installation Position

DO NOT • In direct sunlight

When using the remote control unit, always point the unit’s transmitter head directly at the air conditioner’s receiver.

Air conditioner (Indoor unit)

Receiver

Remote control

(Transmitter head)

unit

The remote control unit may be operated either from a non-fixed position or from a wall-mounted position. To ensure that the air conditioner operates correctly, DO NOT install the remote control unit in the following places:

• Behind a curtain or other places where it is covered

• More than 26 feet (8 m) away from the air conditioner

• In the path of the air conditioner’s airstream

• Where it may become extremely hot or cold

• Where it may be subject to electrical or magnetic noise

• Where there is an obstacle between the remote control unit and air conditioner (since a check signal is sent from the remote control unit every 5 minutes)

Mounting the Remote Control

Unit

Remote control

unit mount

Mounting screws

5/32 x 5/8" (4 x 16 mm)

(included)

When Holding the Remote

Control Unit

Rear side

Press

Set in place

Hole

• To prevent loss of the remote control unit, you can connect the remote control unit to the mount by passing a string through the remote control unit and attachment hole.

To take out the remote control unit, pull it forward.

• When using the remote control unit and during air conditioner operation, the transmitter on the remote control unit should be pointed toward the receiver on the indoor unit.

• Make sure that there are no objects between the remote control unit and receiver which could block the signal.

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1. Operation

Operation with the Remote Control Unit

STEP 2

STEP 3

NOTE

STEP 1

STEP 4

STEP 5

Check that the circuit breaker on the power panel is turned on.

Press the setting buttons as described below and change the settings as desired.

STEP 1 Press the MODE selector button and select the desired mode.

For dehumidifying operation → For cooling operation → For fan only operation →

STEP 2 To start the air conditioner, press the ON/OFF operation button.

STEP 3 Press the TEMP. setting buttons to change the temperature

setting to the desired temperature. Adjustable temperature range:

30 °C max.

16 °C min.

STEP 4 Set the FAN SPEED selector button to the setting you want.

or 86 °F max.

60 °F min.

STEP 5 Press the FLAP button and set the airflow direction as desired.

(Refer to “Adjusting the Airflow Direction” on page 20.)

To stop the air conditioner, press the ON/OFF operation button again.

OI-800-12-EG

Operation with the Remote Control Unit (continued)

NOTE

• Choose the best position in the room for the remote control unit, which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote control unit there.

• This appliance has a built-in 5-minute time delay circuit to ensure reliable operation. When the operation button is pressed, the compressor will start running within three minutes. In the event of power failure, the unit will stop.

2. Adjusting the Fan Speed

A. Automatic fan speed Simply set the FAN SPEED selector button to the position.

This automatically sets the best fan speed for the room temperature.

B. Manual fan speed If you want to adjust fan speed manually during operation, just set the FAN

SPEED selector button as desired. [ , , or ]

3. Fan Only

STEP 2

STEP 1

STEP 3

If you want to circulate air without any temperature control, follow these steps:

STEP 1 Press the MODE selector button to switch to the fan mode .

STEP 2 Press the ON/OFF operation button.

STEP 3 Press the FAN SPEED selector button to select the fan speed of

your choice ( , or ).

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4. Night Setback Mode

Operation with the Remote Control Unit (continued)

Night Setback Mode is used for saving energy.

Press the NIGHT SETBACK button while operation. The mark appears in the display.

To release the night setback function, press the NIGHT SETBACK button again.

In Cooling and DRY Mode: ( and )

When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2 °F when 30 minutes have passed after the selection was made, and then another 2 °F after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

Setting

2°F

temperature

Press the NIGHT

2°F

30 min.

Time

SETBACK button

OI-800-14-EG

5. QUIET Mode

6. HIGH POWER Mode

Operation with the Remote Control Unit (continued)

QUIET Mode is used to reduce the fan sound of the indoor unit.

Press the QUIET button. The mark appears in the display.

To cancel, press QUIET button again.

• In QUIET Mode, the fan rotates at a slower speed than the fan speed setting.

• If the unit is already operating with a very low airflow, the fan sound may not change even if the QUIET button is pressed.

HIGH POWER mode can be used to increase the output of the indoor unit for all operation modes.

7. ION Mode

Press the HIGH POWER button. The mark appears in the display.

To cancel, press HIGH POWER button again.

• When the HIGH POWER button is pressed, the unit operates at maximum output for 30 minutes, regardless of the desired temperature. The fan speed is 1 step above “High”.

• QUIET Mode and HIGH POWER Mode cannot be used at the same time.

NOTE

• Depending on the operating conditions, the fan speed may be increased by a small amount only.

The ION mode is used during operation to generate negative ions that freshen up the air in the room.

Press the ION button. The mark appears in the display.

OI-800-15-EG

To cancel, press ION button again.

• The indoor unit’s ION lamp lights up while negative ions are being generated.

• ION “on” is the remote control unit’s initial setting.

• The negative ions are generated from the negative ion generator.

‘‘DRY’’ ( ) Operation

How it works? • Once the room temperature reaches the level that was set, the unit’s operation

Special Remarks

frequency is changed automatically.

• During DRY operation, the fan speed automatically runs at lower speed for providing a comfortable breeze.

• ‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or less.

Cooling ( ) Operation

Power failure during

operation

Clicking Sound

Clicking sound is heard from

the air conditioner

Remote Control Unit

• Sometimes the indoor unit may not get to the set fan speed such as LOW and QUIET under cool operation at very low outdoor temperatures due to the indoor unit being protected from ice or frost when combined with the outdoor unit for Low Ambient Cooling models.

• In the event of power failure, the unit will stop. When the power is resumed, the unit will restart automatically within five minutes by the remote control unit.

• In cooling operation, any plastic parts may shrink due to a sudden temperature change. In this event, a clicking sound may occur. This is normal, and the sound will soon disappear.

• The remote control unit sends the setting condition to the air conditioner regularly at five minute intervals.

OI-800-16-EG

Setting the Timer

NOTE

1. How to set the present time

2. How to set the OFF time

In the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote control.

• Temperature: °F

• Time: AM, PM

(Example) To set to 10:30 pm.

Operation Indication

1. Press the CLOCK button once if

the time indicator is not flashing.

2. Press the Advance, Return ( , ) button until PM 10:30 is

displayed.

3. Press the CLOCK button again. This completes the setting of the

(Example) To stop the air conditioner at 11:00 am.

1. Press the OFF TIME setting

button once.

The time indication alone flashes.

The time can be set in 1-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

current time.

The timer indication is displayed, and the present OFF time is shown.

OI-800-17-EG

2. Press the Advance, Return ( , ) button until AM 11:00 is

displayed.

3. Wait a few seconds, and then the

setting is complete.

The timer indication blinks. The time can be set in 10-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

The timer indication stops blinking and the present time is displayed.

Setting the Timer (continued)

3. How to set the ON time

4. How to set DAILY ON/OFF REPEAT timer

(Example) To start operation at 7:10 am.

Operation Indication

1. Press the ON TIME setting

button once.

2. Press the Advance, Return ( , ) button until AM 7:10 is

displayed.

The timer indication is displayed, and the present ON time is shown.

The timer indication blinks. The time can be set in 10-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

3. Wait a few seconds, and then

the setting is complete.

The timer indication stops blinking and the present time is displayed.

(Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am.

10:30 pm.

Present time

7:10 am.

11:00 am.

OFF

1. Set the timer ON/OFF times as

shown in 2-1, 2, 3 and 3-1, 2, 3.

NOTE

• The ON/OFF combination timer uses the current time as the reference, and it is activated starting from whichever set time comes first.

• With the ON/OFF combination timer, the settings are repeated every day.

• You can check the timer ON/OFF times after you have set them by pressing the ON TIME and OFF TIME setting buttons.

To cancel a timer program • Press the CANCEL button.

• When either an ON or OFF timer is to be canceled, press the button corresponding to the timer whose program is to be canceled, and then press the CANCEL button.

NOTE

• The airflow direction, fan speed and temperature setting can be changed after a timer program has been set even when the unit is stopped. Even when operation is stopped during an ON timer program, the unit will start operating when the set time is reached provided that the program is not canceled.

• When the ON timer and OFF timer are set to the same time, the timer operates as if it is turned off.

The present time 10:30 pm. and

are displayed.

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Using the 1-Hour OFF Timer

1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed.

The indicator in the display indicates that this function is operating.

Setting procedure:

Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER button.

appears in the display.

Cancellation procedure:

Press the ON/OFF operation button to turn the unit off, wait for the unit to stop operating, and then press the ON/OFF operation button again. The 1-Hour Timer function is now cancelled and the unit operates normally.

NOTE

2. Operation together with the DAILY ON/OFF REPEAT Timer

Do not • Block the air intake and outlet of the unit. If they are obstructed, the unit

Do • Always try to keep the air filter clean. (Refer to “Care and Cleaning”.) A

• If, while the 1-Hour Timer function is operating, the 1HR. TIMER button is

pressed once to cancel the function and then again, the unit continues to operate for one hour from that point in time and then stops.

• It is not possible to use the OFF Timer and 1-Hour OFF Timer together.

Whichever function is set last takes precedence. If the 1 HR. TIMER button is pressed while the TIMER OFF function operates, the OFF Timer is cancelled and the unit will stop operating one hour later.

The 1-Hour OFF Timer setting is given priority over the DAILY ON/OFF REPEAT setting.

Tips for Energy Saving

will not work well, and may be damaged.

• Let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls

and ceiling of the room are warmed by the sun, it will take longer to cool the room.

clogged filter will impair the performance of the unit.

• To prevent conditioned air from escaping, keep windows, doors and any other

openings closed.

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Adjusting the Airflow Direction

1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right.

CAUTION

2. Vertical The vertical airflow can be adjusted by moving the flap with the remote control

A. Sweep function

The flap starts moving up and down to deliver air over the sweep range.

C. Auto flap function

The flap is set to the recommended position.

When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vanes are positioned all of the way to the right or left, condensation may begin to form around the air vent and drip down.

unit. Do not move the flap with your hands. Confirm that the remote control unit has been turned on. Use the FLAP button to set either the sweep function or one of the six airflow direction settings.

COOL

DRY

FAN

B. Setting the airflow manually

Referring to the above illustration, use the FLAP button to set the airflow direction within the range used during the cooling or dehumidifying operation.

SWEEP

NOTE

CAUTION

• The flap automatically closes when the unit is off.

• Use the FLAP button on the remote control to adjust the position of the

flap. If you move the flap by hand, the flap position according to the remote control and the actual flap position may no longer match. If this should happen, shut off the unit, wait for the flap to close, and then turn on the unit again; the flap position will now be normal again.

• Do not have the flap pointed down during cooling operation.

Condensation may begin to form around the air vent and drip down.

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Operation without the Remote Control Unit

INDOOR UNIT If you have lost the remote control unit or it has trouble, follow the steps

below.

When the air conditioner is not running

Each time the OPERATION button is pressed, the operation mode changes cyclically.

Cooling operation Stop

OPERATION button

NOTE

The temperature is set to the room temperature minus 4 °F during the cooling operation, and the fan speed and flap are set to Auto.

Care and Cleaning

1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.

2. Do not pour water on the indoor unit to clean it. This will damage the internal components and cause an electric shock hazard.

Casing and Grille (Indoor Unit) Clean the casing and grille of the indoor unit with a vacuum cleaner brush, or

wipe them with a clean, soft cloth.

If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When cleaning the grille, be careful not to force the vanes out of place.

CAUTION

1. Never use solvents, or harsh chemicals when cleaning the indoor unit. Do not wipe the plastic casing using very hot water.

2. Some metal edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.

3. The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.

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Care and Cleaning (continued)

Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at

least once every two weeks.

How to remove the anti-mold

filter

Cleaning Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter,

How to replace the anti-mold

filter

1. Grasp both ends of the air

intake grille, and remove it by opening towards the front and pulling towards you.

2. Remove the anti-mold filter attached to the rear of the air intake grille.

wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.

1. With the FRONT mark of the anti-mold filter at the front, align the two indentions near the mark with the hooks at the rear of the air intake grille, and then mount the anti-mold filter.

Air intake grille

Anti-mold filter

NOTE

FRONT mark

Hook

2. Allow the edge of the air intake

grille to slide into the top of the indoor unit, and then insert it all the way inside.

3. To attach the air intake grille to the indoor unit, press its bottom right and left corners as well as its bottom center into place.

Attach so that the round pins at the top right and left corners of the air intake grille are inserted into the grooves at the top right and left of the indoor unit.

Air intake grille

Groove

Air intake grille

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Care and Cleaning (continued)

Air Clean Filter The air clean filter removes dust and dirt from the air, and reduces odors and

smoke from tobacco.

This air clean filter cannot remove harmful gases or vapors nor ventilate air in the room. You must open doors or windows frequently when you use gas or oil heating appliances. Otherwise there is a risk of suffocation in extreme cases.

How to install the air clean

filter

How to clean the air clean filter • In general, the filter should be sucked to remove dust in low fan speed of a

NOTE

Cleaning the main unit and

remote control unit

Removing and remounting the

air intake grille

The air clean filter needs to be installed behind the air intake grille.

1. Remove the air intake grille.

2. Install the air clean filter in the

position shown in the figure.

3. Remount the air intake grille.

Air clean

filter

vacuum cleaner once every three months.

• If there is heavily grime on the filter, soak the filter in lukewarm water with neutral detergent diluted 1:500 for 1 to 2 minutes then wash it.

• Rinse the filter in clean water, then let it dry on the towel in room temperature.

• Do not bend nor give excessive force onto the air clean filter.

• If the filter surface is heavily blocked with dirt or damaged, replace it with new one. Purchase a replacement filter at your local dealer. (model STK-FDXB)

• Wipe clean using a soft, dry cloth.

• To remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °F, wring thoroughly, and then wipe.

• The air intake grille can be removed in order to wash it with water.

Refer to “How to remove the anti-mold filter” and “How to replace the anti-mold filter” on page 22.

When using a footstool or the like, be careful not to let it tip over.

CAUTION

Washing the grille with water • Clean the grille gently using a soft sponge, or the like. Then wipe away any

remaining moisture.

• Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly with water and wipe away any remaining moisture.

Cleaning the negative ion

generator

NOTE

OI-800-23-EG

Follow the steps below when the generator has become dirty.

For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.

Remove the dust on the negative ion generator.

• Use a toothbrush, etc. to dust off the end.

• Use a cotton swab, etc., to clean around the generator inside the plastic case, taking care not to touch the electrodes.

• During use, the negative ion generator and other metal parts may become discolored: this is normal and not indicative of malfunctioning.

• If the dirt on and around the negative ion generator is left to build up, a puffing or sputtering sound will eventually be heard. In this case, clean the generator immediately.

• Do not apply excessive force while performing maintenance.

Negative ion generator (metal electrodes inside plastic case)

Troubleshooting

If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center.

Trouble Possible Cause Remedy

Air conditioner does not run at all. 1. Power failure. 1. Restore power.

2. Leakage circuit breaker tripped.

3. Line voltage is too low. 3. Consult your electrician or dealer.

2. Contact service center.

4. Batteries in remote control unit have run down.

OPERATION lamp blinks and air conditioner does not operate.

Compressor runs but soon stops. Obstruction in front of condenser coil. Remove obstruction.

Poor cooling performance. 1. Dirty or clogged air filter. 1. Clean air filter to improve airflow.

Clicking sound is heard from the air conditioner.

OPERATION lamp lights but outdoor unit will not run.

Trouble in system. Contact service center.

2. Heat source or many people in room. 2. Eliminate heat source if possible.

3. Doors and/or windows are open. 3. Shut them to keep the heat out.

4. Obstacle near air intake or air discharge port.

5. Thermostat is set too high for cooling. 5. Set the temperature lower.

In cooling operation, any plastic parts may shrink due to a sudden temperature change. In this event, a clicking sound may occur.

1. The use of cellular phones near the air conditioner may cause disturbance to its normal operation.

4. Replace batteries.

4. Remove it to ensure good airflow.

This is normal, and the sound will soon disappear.

1. Turn off the power then restart the air conditioner after a while.

2. Consult your dealer.

Operating Range

The air conditioner is operable within the temperature ranges as listed below:

For Cooling Only Models : C1872, C2472

Temperature Indoor air temperature Outdoor air temperature

COOLING Max. 95 °F DB / 71 °F WB 115 °F DB

Min. 67 °F DB / 57 °F WB 67 °F DB

For Low Ambient Cooling Models : CL1872, CL2472

Temperature Indoor air temperature Outdoor air temperature

COOLING Max. 95 °F DB / 71 °F WB 115 °F DB

Min. 67 °F DB / 57 °F WB 0 °F DB

OI-800-24-EG

For Parts Service Contact

SANYO Fisher Service Company A Division of SANYO North America Corporation 1165 Allgood Road, Suite 22, Marietta, GA 30062 U.S.A.

Sanyo Canada Inc. 1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA Jan./2006 (T)

Sanyo C2472, CL2472, ks2472, CL1872, C1872 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual