Sanyo CH1271, CH0971 User Manual

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TECHNICAL & SERVICE MANUAL

KHS0971 + CH0971

FILE NO.

KHS1271 + CH1271

Destination: North America

DC INVERTER SPLIT SYSTEM AIR CONDITIONER

Indoor Model No.

KHS0971

KHS1271

Indoor Unit

Product Code No.

1 852 099 79

1 852 099 80

Outdoor Model No.

CH0971

CH1271

Product Code No.

1 852 330 21

1 852 330 22

Outdoor Unit

KHS0971 KHS1271

IMPORTANT

These air conditioners employ new refrigerant R410A.

Pay special attention when servicing the unit.

CH0971 CH1271

REFERENCE NO. SM700647-06

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.

This symbol refers to a hazard or

WARNING

CAUTION

If Necessary, Get Help

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

In Case of Improper Installation

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

SPECIAL PRECAUTIONS

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.

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

WARNING

•

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 Wiring

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

•

Turn 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

CAUTION

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

Page

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. Te mperature Charts 5-2. Cooling Capactiy 5-3. Cooling Capactiy (Low Ambient) 5-4. Heating Capactiy 5-5. Air Throw Distance Charts

6. ELECTRICAL DATA

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

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6 8

16 20 22 24 26

28 29

7. MAINTENANCE

7-1. Address Setting of the Remote Control Unit 7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit

8. FUNCTIONS

8-1. Operation Functions 8-2. Protective Functions

9. TROUBLESHOOTING

9-1. Precautions before Performing Inspection or Repair 9-2. Method of Self-Diagnostics 9-3. Checking the Indoor and Outdoor Units 9-4. Trouble Diagnosis of Fan Motor 9-5. Noise Malfunction and Electromagnetic Interference

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31 32

33 35

37 37 39 43 44

10. CHECKING ELECTRICAL COMPONENTS

10-1. Measurement of Insulation Resistance 10-2. Checking Continuity of Fuse on PCB Ass'y

11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

11-1. Characteristics of New Refrigerant R410A 11-2. Checklist before Servicing 11-3. Tools Specifically for R410A 11-4. Tubing Installation Procedures 11-5. In Case of Compressor Malfunction 11-6. In Case Refrigerant is Leaking 11-7. Charging Additional Refrigerant 11-8. Retro-Fitting Existing Systems

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Page

45 46

47 48 49 49 50 52 53 53

APPENDIX A INSTRUCTION MANUAL

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APPENDIX B INSTALLATION INSTRUCTIONS

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A-1

A-2

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Heating

Maximum

Minimum

Maximum

Minimum

95 °F D.B. / 71 °F W.B.

67 °F D.B. / 57 °F W.B.

80 °F D.B. / 67 °F W.B.

D.B. / _ W.B.

115 °F D.B.

0 °F D.B.

75 °F D.B. / 65 °F W.B.

0 °F D.B.

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit KHS0971 Outdoor Unit CH0971

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.

Heating: Indoor air temperature 70°F D.B.

Outdoor air temperature 47°F D.B. / 43°F W.B.

Vertical

dB-A dB-A

Indoor : Hi/Me/Lo/Qt* Outdoor : Hi

Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control

( 3,000 to 12,200 ) ( 0.9 to 3.6 )

7.6

720

( 2.5 to 7.6 ) ( 250 to 720 )

10.3 995

( 2.6 to 10.3 ) ( 250 to 995 )

9,000

2.65

12,200

3.6

( 3,000 to 9,000 ) ( 0.9 to 2.65 )

Shipping Volume

Cooling Heating

7,650 1,350

Net Shipping

Package Dimensions

Weight

Height × Width × Depth

Ibs (kg) Ibs (kg)

cu.ft (m

)

(mm)

inch

(mm)

115V Single-Phase 60Hz

inch

104 to 126

Dimensions & Weight

(*Qt = Quiet mode) Refrigerant Tubing Connections

Unit Dimensions

Operation Sound

Electrical Rating

Sensible Capacity Latent Capacity

WPower Input

V A

Available Voltage Range Running Amperes

Refrigerant Tube Kit / Accessories

Narrow tube Wide tube

Refrigerant inch (mm) Tube Diameter inch (mm)

19.8

24.3

2.82

(9.0) (11.0) (0.08)

75.0

81.6

6.35

(34.0) (37.0) (0.18)

23-5/8 × 33-11/16 × 14-1/4

(600 × 856 × 362)

(285 × 825 × 189) (548 × 720 × 265)

10-1/32 × 35-7/16 × 13-25/32

(255 × 900 × 350)

Outdoor UnitIndoor Unit

11-7/32 × 32-15/32 × 7-7/16 21-9/16 × 28-11/32 × 10-7/16

1/4 (6.35) 3/8 (9.52)

ft (m)Max. allowable tubing length at shipment

Flare Type

25 (7.5)

34 / 31 / 28 / 2334 / 31 / 28 / 23

4746

R410A / 2.09 (950)

Electric Expansion Valve

Washable, Anti-Mold

DC Rotary (Inverter)

Manual

Auto

Timer

Indoor / OutdoorFan Speeds

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

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

Airflow Direction (Indoor) Horizontal

Controls / Temperature Control Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Features

HSPF Compressor Locked Rotor Amperes

BTU/Wh

Optional / Air Clean Filter

BTU/h

Performance

- 8.5

%Power Factor 83 84

A20

Voltage Rating

BTU/h

Total Capacity

BTU/h

SEER BTU/Wh 16 -

282 (480) 312 (530)Air Circulation (High) ft3/min (m3/h)

3.4 -Moisture Removal (High) Pints/h

COP W/W - 3.62

EER BTU/h/W 12.5 -

Fuse or Circuit Breaker Capacity A20

Indoor Unit KHS1271 Outdoor Unit CH1271

Voltage Rating

115V Single-Phase 60Hz

Cooling Heating

Total Capacity

Sensible Capacity Latent Capacity

Performance

BTU/h

BTU/h BTU/h

11,900

3.5

( 3,000 to 11,900 ) ( 0.9 to 3.5 )

9,100 2,800

294 (500) 312 (530)Air Circulation (High) ft3/min (m3/h)

14,300

4.2

( 3,000 to 14,300 ) ( 0.9 to 4.2 )

4.26 -Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

V A

10.9

( 2.5 to 10.9 )

1,090

WPower Input

( 250 to 1,090 )

104 to 126

11.7

1,165

( 2.5 to 11.7 )

( 250 to 1,165 )

%Power Factor 87 87 EER BTU/h/W 10.9 COP W/W - 3.61 SEER BTU/Wh 17 HSPF

Electrical Rating

Compressor Locked Rotor Amperes

BTU/Wh

- 9.3

A20 Fuse or Circuit Breaker Capacity A20 Controls / Temperature Control Control Unit Timer

Indoor / OutdoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g)

Features

Refrigerant Control Operation Sound (*Qt = Quiet mode)

Indoor : Hi/Me/Lo/Qt* Outdoor : Hi

Refrigerant Tubing Connections

Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube Wide tube

Refrigerant Tube Kit / Accessories

Unit Dimensions

Height × Width × Depth

Package Dimensions

Height × Width × Depth

Weight

Dimensions & Weight

Shipping Volume

Net Shipping

Ibs (kg)

cu.ft (m

dB-A dB-A

ft (m)Max. allowable tubing length at shipment

inch

(mm)

inch

(mm)

11-7/32 × 32-15/32 × 7-7/16 21-9/16 × 28-11/32 × 10-7/16

(285 × 825 × 189) (548 × 720 × 265)

10-1/32 × 35-7/16 × 13-25/32

(255 × 900 × 350)

)

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

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

Manual

Auto

Washable, Anti-Mold

DC Rotary (Inverter)

R410A / 2.43 (1,100)

Electric Expansion Valve

34 / 31 / 29 / 2536 / 33 / 29 / 25

Flare Type

25 (7.5) 1/4 (6.35) 3/8 (9.52)

Optional / Air Clean Filter

Outdoor UnitIndoor Unit

23-5/8 × 33-11/16 × 14-1/4

(600 × 856 × 362)

19.8

(9.0)

24.3

(11.0)

2.82

(0.08)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

77.2

83.8

6.35

4947

(35.0) (38.0) (0.18)

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.

Heating: Indoor air temperature 70°F D.B.

Outdoor air temperature 47°F D.B. / 43°F W.B.

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit KHS0971

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-KHS0971

Microprocessor

250V 3A

Remote Control Unit

Fan

Type Q'ty ... Dia. and Length

Fan Motor

Type Model ... Q'ty No. of Poles

Rough Measure RPM (Cool / Heat)

Nominal Output Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Operating Temp.

Run Capacitor Micro F

Flap Motor

Type Stepping Motor

Model

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

inch (mm)

Ohm

Open °F (°C)

Close °F (°C)

VAC

1 ... D3-11/16 / L24-31/32 (D94/L634)

Each Pair of Terminal : 400 +/- 7%

RCS-4HVPIS4U

IBH-884-076 ... 1

1,200 / 1,250

BRN-WHT : 57.9 RED-WHT : 55.2

Thermal Fuse

Cross-Flow

AC Motor

266 (130)

4.5

250

MP24Z3 DC 12V

Heat Exchanger Coil

Coil

Rows Fins per inch

(m2)

Aluminum Plate Fin / Copper Tube

19.5

2.02 (0.188) Face Area

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit KHS1271

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-KHS1271

Microprocessor

250V 3A

Remote Control Unit

RCS-4HVPIS4U

Fan

Type Q'ty ... Dia. and Length

inch (mm)

1 ... D3-11/16 / L24-31/32 (D94/L634)

Fan Motor

Type Model ... Q'ty

IBH-884-076 ... 1

No. of Poles

Rough Measure RPM (Cool / Heat)

Nominal Output Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Ohm

1,250 / 1,250

BRN-WHT : 57.9 RED-WHT : 55.2

Safety Device

Type Operating Temp.

Open °F (°C)

Thermal Fuse

Close °F (°C)

Run Capacitor Micro F

VAC

Flap Motor

Type Stepping Motor

Model

Rating

Coil Resistance Ohm

Each Pair of Terminal : 400 +/- 7%

(Ambient Temp. 77 °F (25 °C))

Cross-Flow

AC Motor

266 (130)

4.5

250

MP24Z3 DC 12V

Heat Exchanger Coil

Coil

Rows Fins per inch

(m2)

Aluminum Plate Fin / Copper Tube

19.5

2.02 (0.188) Face Area

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

2-2-2. Outdoor Unit

Outdoor Unit CH0971

Control PCB

Part No.

Controls

Control Circuit Fuse

Compressor

Type

Compressor Model / Nominal Output Compressor Oil ... Amount Coil Resistance (Ambient Temp. 68 °F (20 °C))

Safety Device

CT (Peak current cut-off control) Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Overload Relay

Run Capacitor

Crankcase Heater

Pints (cc)

Ohm

Model

Operation Temp.

Micro F

VAC

CB-CH0971

Microprocessor

125V 25A

DC Rotary (Inverter)

G4C090LU1ER / 900W

FV50S ... 0.68 (320)

U - V :

0.81

V - W :

W - U :

0.81

Yes Yes Yes

CS-7L115

Open : 239 °F (115 °C), Close : 203 °F (95 °C)

115V 20W

Fan

Type

Q'ty ... Dia. inch (mm)

Fan Motor

Type Model ... Q'ty No. of Poles

Rough Measure RPM (Cool / Heat)

Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection

Run Capacitor

Heat Exchanger Coil

Coil

Rows Fins per inch

Face Area

Ohm

Micro F

VAC

(m2)

Propeller

1 ... D15-3/4 (D400)

DC Motor

DAJ12-55J71-CU ... 1

750 / 680

RED - WHT :

WHT - BLU :

BLU - RED :

77.5

Internal Controller

Yes

Aluminum Plate Fin / Copper Tube

18.1

3.10 (0.288)

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Outdoor Unit CH1271

Control PCB

Part No.

Controls

Control Circuit Fuse

Compressor

Type

Compressor Model / Nominal Output Compressor Oil ... Amount Coil Resistance (Ambient Temp. 68 °F (20 °C))

Safety Device

CT (Peak current cut-off control) Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Overload Relay

Run Capacitor

Crankcase Heater

Pints (cc)

Ohm

Model

Operation Temp.

Micro F

VAC

CB-CH1271

Microprocessor

125V 25A

DC Rotary (Inverter)

G4C090LU1ER / 900W

FV50S ... 0.68 (320)

U - V :

0.81

V - W :

W - U :

0.81

Yes Yes Yes

CS-7L115

Open : 239 °F (115 °C), Close : 203 °F (95 °C)

115V 20W

Fan

Type

Q'ty ... Dia. inch (mm)

Fan Motor

Type Model ... Q'ty No. of Poles

Rough Measure RPM (Cool / Heat)

Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection

Run Capacitor

Heat Exchanger Coil

Coil

Rows Fins per inch

Face Area

Ohm

Micro F

VAC

(m2)

Propeller

1 ... D15-3/4 (D400)

DC Motor

DAJ12-55J71-CU ... 1

750 / 750

RED - WHT :

WHT - BLU :

BLU - RED :

77.5

Internal Controller

Yes

Aluminum Plate Fin / Copper Tube

18.1

3.95 (0.367)

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

2-3. Other Component Specifications

Indoor Unit KHS0971  KHS1271 Outdoor Unit CH0971

 CH1271

• Indoor air temp sensor

(Model:PTM-D51H-S3 TH2)

• Indoor heat exchanger sensor

(Model:PTM-D51H-S3 TH1)

• Compressor temp sensor

(Model:DTN-TKS274Y TH2)

Resistance (k ohm)

59 68 77 86 95 104

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

Temperature °F (°C)

200

180

160

140

120

100

Resistance (k ohm)

32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90)

Temperature °F (°C)

• Outdoor air temp sensor

(Model:DTN-TKS269B)

• Outdoor heat exchanger sensor

(Model:DTN-TKS274Y TH1)

Resistance (k ohm)

4514 23 32 41 50 59 68

(

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

Temperature °F (°C)

3. DIMENSIONAL DATA

Indoor Unit  KHS0971  KHS1271

Unit: inch(mm)

Outdoor Unit CH0971

 CH1271

3-19/32

10-13/16

21-3/16

ID:23/32

28-11/32 (720) 2-1/8

4-ID:15/16

3-19/32

15/32

11-13/32

10-7/16 (265)

12-7/16

Wide tube service valve dia.3/8" (9.52)

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

5/8

21-9/16 (548)

4-9/32 2-5/32

6-3/32

Unit: inch(mm)

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit KHS0971  KHS1271

Indoor unit Outdoor unit

Heat exchanger

Narrow tube

Wide tube

O.D. 3/8" (9.52 mm)

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

Outdoor Unit CH0971

 CH1271

Wide tube service valve

Muffler

4-way valve

Narrow tube service valve

Strainer

Muffler

Accumulator

High pressure

switch

H.P.

Electric

expansion

valve

Capillary tube for split flow

Compressor

Heat exchanger

Cooling cycle (Defrosting cycle)

Heating cycle

Insulation of Refrigerant Tubing

IMPORTANT

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,

CAUTION

never try to bend it into a narrow curve because it can cause the tube to break or crack.

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

Wide tube

Insulation

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

Narrow tube

5. PERFORMANCE DATA

5-1. Temperature Charts

Indoor Unit KHS0971 Outdoor Unit CH0971

Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V)

(1) Low pressure performance chart

173

(1.2)

159

(1.1)

psig(MPaG)

145

(1.0)

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

131

(0.9)

117

Low pressure at wide tube service valve

(0.8)

-4

(-20)

(-15)

(-10)

(-5)

(2) Operating current performance chart

32 (0)

41 (5)

(10)

Outdoor inlet air D.B. temp.°F(°C)

(15)

(20)

F (

°F (

F (

°F (

Hi FanLo fan

F (

°C)

(25)

(30)

(35)

104 (40)

Operating current (A)

-4

(-20)

(-15)

(-10)

(-5)

(3) Indoor discharge air performance chart

64.4 (18)

°C)

60.8 (16)

57.2 (14)

53.6 (12)

50.0 (10)

32 (0)

41 (5)

(10)

Outdoor inlet air D.B. temp.°F(°C)

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C

(15)

(20)

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

Hi FanLo fan

)

F (

°C)

F (

°F (

°C)

F (

°F (

F (

°F (

F (

°F (

(25)

F (

°C)

(30)

(35)

Hi FanLo fan

104 (40)

Indoor discharge air temperature °F(

46.4 (8)

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

(15)

(20)

(25)

(30)

(35)

Outdoor inlet air D.B. temp.°F(°C)

NOTE

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

104 (40)

Indoor Unit KHS0971 Outdoor Unit CH0971

Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V)

(1) High pressure performance chart

493

(3.4)

°C)

°F(

421

psig(MPaG)

(2.9)

348

(2.4)

276

(1.9)

High pressure at wide tube service valve

(2) Operating current performance chart

Indoor Air Temp.73

(

5)32(0)41(5)50(10)59(15)68(20)77(25)

Outdoor inlet air D.B. temp.°F(°C)

70°F(21

°F(

°C)

Operating current (A)Indoor discharge air temperature °F(°C)

(

(3) Indoor discharge air performance chart

140(60)

131(55)

122(50)

113(45)

104(40)

95(35)

86(30)

23°C)

Indoor Air Temp.73

5)32(0)41(5)50(10)59(15)68(20)77(25)

°F(

70°F(21

°F(

°C)

Outdoor inlet air D.B. temp.°F(°C)

°C)

°F(

Indoor Air Temp.73

70°F(21

°F(

°C)

77(25)

(

5)32(0)41(5)50(10)59(15)68(20)77(25)

Outdoor inlet air D.B. temp.°F(°C)

NOTE

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 "8-2. Overload prevention during heating.")

Indoor Unit KHS1271 Outdoor Unit CH1271

Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V)

(1) Low pressure performance chart

173

(1.2)

159

(1.1)

psig(MPaG)

145

(1.0)

131

(0.9)

117

Low pressure at wide tube service valve

(0.8)

-4

(-20)

(-15)

(-10)

(-5)

(2) Operating current performance chart

Operating current (A)

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

Outdoor inlet air D.B. temp.°F(°C)

32 (0)

41 (5)

(10)

Outdoor inlet air D.B. temp.°F(°C)

Indoor Air Temp.86°F (30°C)

(15)

(20)

Indoor Air Temp.86°F (30°C)

(20)

°F (

Hi FanLo fan

°C)

(25)

°C)

(25)

(30)

(35)

Hi FanLo fan

(35)

104 (40)

(3) Indoor discharge air performance chart

64.4 (18)

°C)

(30)

Hi FanLo fan

(35)

60.8 (16)

57.2 (14)

53.6 (12)

50.0 (10)

Indoor discharge air temperature °F(

46.4 (8)

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

Indoor Air Temp.86°F (30°C)

(15)

(20)

°F (

°C)

(25)

Outdoor inlet air D.B. temp.°F(°C)

NOTE

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

104 (40)

Indoor Unit KHS1271 Outdoor Unit CH1271

Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V)

(1) High pressure performance chart

493

(3.4)

psig(MPaG)

421

(2.9)

348

(2.4)

276

High pressure at wide tube service valve

(1.9)

(2) Operating current performance chart

Operating current (A)

°F(

Indoor Air Temp.73

(

5)32(0)41(5)50(10)59(15)68(20)77(25)

°F(

Outdoor inlet air D.B. temp. °F(°C)

Indoor Air Temp.73

°F(

°C)

(

5)32(0)41(5)50(10)59(15)68(20)77(25)

Outdoor inlet air D.B. temp. °F(°C)

(3) Indoor discharge air performance chart

140(60)

131(55)

122(50)

113(45)

104(40)

95(35)

86(30)

Indoor discharge air temperature °F(°C)

77(25)

(

5)32(0)41(5)50(10)59(15)68(20)77(25)

Indoor Air Temp.73

Outdoor inlet air D.B. temp. °F(°C)

NOTE

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 "8-2. Overload prevention during heating.")

°C)

°F(

°C)

°F(

°C

°F

5-2. Cooling Capacity

Indoor Unit : KHS0971

Outdoor Unit : CH0971

Power Supply : 115V Single Phase 60Hz

< Cooling Capacity >

RATING CAPACITY: 9,000 BTU/h AIR FLOW RATE: 282 CFM

INDOOR OUTDOOR

ENT. TEMP.

W.B. D.B. 65 75 85 95 105 115

59 76 (24.4) SHC 7,860 7,690 7,580 7,470 7,250 6,400

(15.0) 80 (26.7) SHC 8,840 8,730 8,500 8,260 7,890 6,400

63 76 (24.4) SHC 6,700 6,590 6,430 6,370 6,160 5,500

(17.2) 80 (26.7) SHC 7,690 7,580 7,470 7,360 7,200 6,480

F (oC) AMBIENT TEMP. oF (oC)

TC 9,080 8,800 8,500 8,260 7,890 6,400

72 (22.2) SHC 6,870 6,760 6,590 6,480 6,320 5,610

84 (28.9) SHC 9,080 8,800 8,500 8,260 7,890 6,400 88 (31.1) SHC 9,080 8,800 8,500 8,260 7,890 6,400

TC 9,440 9,160 8,860 8,630 8,250 6,580

72 (22.2) SHC 5,770 5,610 5,500 5,390 5,220 4,510

84 (28.9) SHC 8,680 8,570 8,400 8,300 8,130 6,580 88 (31.1) SHC 9,440 9,160 8,860 8,630 8,250 6,580

TC 9,790 9,520 9,220 # 9,000 8,620 6,740

(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)

72 (22.2) SHC 4,620 4,450 4,350 4,290 4,130 3,410

67 76 (24.4) SHC 5,550 5,440 5,330 5,220 5,060 4,350

(19.4) 80 (26.7) SHC 6,540 6,430 6,320 6,210 6,100 5,330

84 (28.9) SHC 7,530 7,420 7,310 7,200 7,030 6,320 88 (31.1) SHC 8,460 8,350 8,240 8,190 8,020 6,740

TC 10,120 9,860 9,560 9,360 8,980 6,890

72 (22.2) SHC 3,360 3,250 3,140 3,080 2,920 2,210

71 76 (24.4) SHC 4,350 4,240 4,130 4,020 3,910 3,190

(21.7) 80 (26.7) SHC 5,330 5,220 5,110 5,060 4,890 4,180

84 (28.9) SHC 6,270 6,210 6,100 5,990 5,880 5,110 88 (31.1) SHC 7,250 7,140 7,030 6,980 6,810 6,100

TC 10,400 10,140 9,840 9,680 9,300 7,010

75 76 (24.4) SHC 3,140 3,030 2,920 2,860 2,750 2,040

(23.9) 80 (26.7) SHC 4,130 4,070 3,960 3,910 3,800 3,030

84 (28.9) SHC 5,110 5,000 4,890 4,840 4,730 4,020 88 (31.1) SHC 6,050 5,990 5,880 5,830 5,720 4,950

TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)

NOTE

Rating conditions (#)

: Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B. : Outdoor Ambient Temp. 95 °F (35 °C) D.B.

Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics.

3. Above data represents the value when the operation frequency of a compressor is fixed.

Indoor Unit : KHS1271

Outdoor Unit : CH1271

Power Supply : 115V Single Phase 60Hz

< Cooling Capacity >

RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 294 CFM

INDOOR OUTDOOR

ENT. TEMP.

W.B. D.B. 65 75 85 95 105 115

59 76 (24.4) SHC 9,450 9,280 9,100 8,990 8,760 7,850

(15.0) 80 (26.7) SHC 10,530 10,360 10,130 10,020 9,790 8,860

63 76 (24.4) SHC 8,190 8,020 7,850 7,730 7,560 6,590

(17.2) 80 (26.7) SHC 9,220 9,100 8,930 8,820 8,590 7,680

F (oC) AMBIENT TEMP. oF (oC)

TC 11,970 11,660 11,310 11,050 10,620 8,860

72 (22.2) SHC 8,480 8,300 8,130 7,960 7,730 6,880

84 (28.9) SHC 11,500 11,330 11,160 10,990 10,620 8,860 88 (31.1) SHC 11,970 11,660 11,310 11,050 10,620 8,860

TC 12,370 12,070 11,730 11,480 11,050 9,020

72 (22.2) SHC 7,220 7,050 6,880 6,760 6,530 5,620

84 (28.9) SHC 10,250 10,080 9,900 9,790 9,560 8,650 88 (31.1) SHC 11,220 11,050 10,880 10,760 10,590 9,020

TC 12,740 12,450 12,120 # 11,900 11,470 9,160

(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)

72 (22.2) SHC 5,900 5,730 5,620 5,500 5,330 4,360

67 76 (24.4) SHC 6,880 6,760 6,590 6,530 6,300 5,330

(19.4) 80 (26.7) SHC 7,900 7,790 7,620 7,560 7,330 6,420

84 (28.9) SHC 8,930 8,760 8,650 8,530 8,360 7,390 88 (31.1) SHC 9,900 9,790 9,620 9,560 9,330 8,360

TC 13,080 12,800 12,470 12,290 11,870 9,270

72 (22.2) SHC 4,480 4,360 4,250 4,190 4,020 3,050

71 76 (24.4) SHC 5,500 5,390 5,220 5,160 4,990 4,020

(21.7) 80 (26.7) SHC 6,530 6,420 6,300 6,190 6,080 5,050

84 (28.9) SHC 7,500 7,390 7,280 7,220 7,050 6,080 88 (31.1) SHC 8,530 8,420 8,300 8,190 8,020 7,050

TC 13,320 13,060 12,750 12,610 12,210 9,330

75 76 (24.4) SHC 4,130 4,020 3,960 3,900 3,730 2,760

(23.9) 80 (26.7) SHC 5,160 5,100 4,990 4,930 4,760 3,790

84 (28.9) SHC 6,190 6,080 5,960 5,900 5,790 4,820 88 (31.1) SHC 7,160 7,100 6,990 6,930 6,760 5,790

TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)

NOTE

Rating conditions (#)

: Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B. : Outdoor Ambient Temp. 95 °F (35 °C) D.B.

Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics.

3. Above data represents the value when the operation frequency of a compressor is fixed.

5-3. Cooling Capacity (Low Ambient)

Indoor Unit : KHS0971

Outdoor Unit : CH0971

Power Supply : 115V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

RATING CAPACITY: 9,000 BTU/h AIR FLOW RATE: 282 CFM

INDOOR OUTDOOR

ENT. TEMP.

W.B. D.B. 0515 25 35 45 55

59 76 (24.4) SHC 6,980 6,980 7,030 7,030 7,030 7,030 6,980

(15.0) 80 (26.7) SHC 7,310 7,300 7,350 7,380 7,390 7,370 7,310

63 76 (24.4) SHC 5,770 5,770 5,830 5,880 5,880 5,880 5,880

(17.2) 80 (26.7) SHC 6,810 6,810 6,810 6,870 6,870 6,870 6,870

F (oC) AMBIENT TEMP. oF (oC)

(-17.8) (-15.0) (-9.4) (-3.9) (1.7) (7.2) (12.8)

TC 7,310 7,300 7,350 7,380 7,390 7,370 7,310

72 (22.2) SHC 6,050 6,050 6,050 6,100 6,100 6,050 6,050

84 (28.9) SHC 7,310 7,300 7,350 7,380 7,390 7,370 7,310 88 (31.1) SHC 7,310 7,300 7,350 7,380 7,390 7,370 7,310

TC 7,330 7,330 7,420 7,490 7,530 7,540 7,490

72 (22.2) SHC 4,840 4,840 4,840 4,890 4,890 4,890 4,890

84 (28.9) SHC 7,330 7,330 7,420 7,490 7,530 7,540 7,490 88 (31.1) SHC 7,330 7,330 7,420 7,490 7,530 7,540 7,490

TC 7,290 7,300 7,450 7,560 7,640 7,680 7,660

72 (22.2) SHC 3,580 3,580 3,630 3,690 3,740 3,740 3,740

67 76 (24.4) SHC 4,560 4,560 4,620 4,670 4,670 4,730 4,670

(19.4) 80 (26.7) SHC 5,550 5,550 5,610 5,660 5,720 5,720 5,720

84 (28.9) SHC 6,540 6,540 6,590 6,650 6,650 6,650 6,650 88 (31.1) SHC 7,290 7,300 7,450 7,560 7,640 7,640 7,640

TC 7,170 7,190 7,400 7,570 7,700 7,780 7,780

72 (22.2) SHC 2,320 2,320 2,370 2,420 2,480 2,530 2,530

71 76 (24.4) SHC 3,250 3,250 3,360 3,410 3,470 3,470 3,470

(21.7) 80 (26.7) SHC 4,290 4,290 4,350 4,400 4,450 4,510 4,510

84 (28.9) SHC 5,220 5,220 5,330 5,390 5,440 5,440 5,440 88 (31.1) SHC 6,210 6,210 6,270 6,320 6,370 6,430 6,430

TC 6,980 7,010 7,300 7,530 7,710 7,820 7,850

75 76 (24.4) SHC 2,040 2,040 2,150 2,210 2,260 2,320 2,320

(23.9) 80 (26.7) SHC 3,030 3,030 3,140 3,190 3,250 3,300 3,300

84 (28.9) SHC 4,020 4,020 4,130 4,180 4,240 4,240 4,290 88 (31.1) SHC 4,950 4,950 5,060 5,110 5,170 5,220 5,220

TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)

NOTE

Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics.

2. Above data represents the value when the operation frequency of a compressor is fixed.

Indoor Unit : KHS1271

Outdoor Unit : CH1271

Power Supply : 115V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 294 CFM

INDOOR OUTDOOR

ENT. TEMP.

W.B. D.B. 0515 25 35 45 55

59 76 (24.4) SHC 8,250 8,250 8,250 8,300 8,300 8,300 8,250

(15.0) 80 (26.7) SHC 9,280 9,280 9,330 9,330 9,330 9,330 9,280

63 76 (24.4) SHC 6,880 6,880 6,930 6,930 6,990 6,990 6,990

(17.2) 80 (26.7) SHC 7,900 7,900 7,960 8,020 8,020 8,020 8,020

F (oC) AMBIENT TEMP. oF (oC)

TC 9,660 9,670 9,680 9,710 9,730 9,700 9,670

72 (22.2) SHC 7,280 7,280 7,280 7,280 7,280 7,280 7,280

84 (28.9) SHC 9,660 9,670 9,680 9,710 9,730 9,700 9,670 88 (31.1) SHC 9,660 9,670 9,680 9,710 9,730 9,700 9,670

TC 9,610 9,620 9,700 9,780 9,840 9,840 9,840

72 (22.2) SHC 5,900 5,900 5,900 5,960 5,960 5,960 5,960

84 (28.9) SHC 8,930 8,930 8,930 8,990 8,990 8,990 8,990 88 (31.1) SHC 9,610 9,620 9,700 9,780 9,840 9,840 9,840

TC 9,460 9,490 9,640 9,770 9,890 9,920 9,970

(-17.8) (-15.0) (-9.4) (-3.9) (1.7) (7.2) (12.8)

72 (22.2) SHC 4,480 4,480 4,530 4,590 4,650 4,650 4,700

67 76 (24.4) SHC 5,450 5,500 5,560 5,620 5,680 5,680 5,680

(19.4) 80 (26.7) SHC 6,530 6,530 6,590 6,650 6,700 6,700 6,700

84 (28.9) SHC 7,500 7,500 7,560 7,620 7,680 7,680 7,730 88 (31.1) SHC 8,480 8,530 8,590 8,650 8,700 8,700 8,700

TC 9,190 9,240 9,480 9,680 9,860 9,940 10,030

72 (22.2) SHC 2,990 3,050 3,100 3,160 3,280 3,280 3,330

71 76 (24.4) SHC 4,020 4,020 4,130 4,190 4,250 4,300 4,300

(21.7) 80 (26.7) SHC 5,050 5,050 5,160 5,220 5,280 5,330 5,330

84 (28.9) SHC 6,020 6,080 6,130 6,190 6,300 6,300 6,360 88 (31.1) SHC 7,050 7,050 7,160 7,220 7,280 7,330 7,330

TC 8,840 8,900 9,240 9,520 9,760 9,880 10,020

75 76 (24.4) SHC 2,590 2,650 2,760 2,820 2,930 2,930 2,990

(23.9) 80 (26.7) SHC 3,680 3,680 3,790 3,850 3,960 4,020 4,020

84 (28.9) SHC 4,650 4,650 4,760 4,880 4,930 4,990 5,050 88 (31.1) SHC 5,620 5,680 5,790 5,850 5,960 5,960 6,020

TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)

NOTE

Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics.

2. Above data represents the value when the operation frequency of a compressor is fixed.

5-4. Heating Capacity

Indoor Unit : KHS0971

Outdoor Unit : CH0971

Power Supply : 115V Single Phase 60Hz

< Heating Capacity >

RATING CAPACITY: 12,200 BTU/hAIR FLOW RATE: 312 CFM

OUTDOOR INDOOR

ENT. TEMP.

13 (-10.6) TH 8,250 8,230 8,220 8,190 8,170

18 (-7.8) TH 8,860 8,850 8,830 8,810 8,780

23 (-5.0) TH 9,510 9,490 9,470 9,450 9,420

F (oC) AMBIENT TEMP. oF (oC)

W.B. 60 65 70 75 80

0 (-17.8) TH 6,910 6,900 6,890 6,870 6,840

3 (-16.1) TH 7,140 7,130 7,110 7,090 7,070

8 (-13.3) TH 7,680 7,670 7,660 7,630 7,610

(15.6) (18.3) (21.1) (23.9) (26.7)

28 (-2.2) TH 10,180 10,160 10,140 10,110 10,080

33 (0.6) TH 10,870 10,850 10,820 10,790 10,750

38 (3.3) TH 11,540 11,520 11,490 11,460 11,420

43 (6.1) TH 12,250 12,230 # 12,200 12,160 12,120

48 (8.9) TH 12,970 12,940 12,910 12,870 12,820

53 (11.7) TH 13,680 13,650 13,620 13,570 13,520

58 (14.4) TH 14,360 14,330 14,290 14,240 14,180

63 (17.2) TH 15,050 15,010 14,970 14,920 14,490

65 (18.3) TH 15,310 15,280 15,230 15,180 14,470

TH : Total Heating Capacity (BTU/h)

NOTE

Rating conditions (#)

Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold Air Prevention Protection during heating operation into account. For this reason, the value may vary from the actual heating characteristics.

3. Above data represents the value when the operation frequency of a compressor is fixed.

: Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B.

Indoor Unit : KHS1271

Outdoor Unit : CH1271

Power Supply : 115V Single Phase 60Hz

< Heating Capacity >

RATING CAPACITY: 14,300 BTU/hAIR FLOW RATE: 312 CFM

OUTDOOR INDOOR

ENT. TEMP.

13 (-10.6) TH 9,600 9,580 9,560 9,530 9,500

18 (-7.8) TH 10,330 10,310 10,290 10,260 10,220

23 (-5.0) TH 11,100 11,080 11,050 11,020 10,980

28 (-2.2) TH 11,900 11,870 11,840 11,800 11,760

F (oC) AMBIENT TEMP. oF (oC)

W.B. 60 65 70 75 80

0 (-17.8) TH 8,010 8,000 7,980 7,960 7,930

3 (-16.1) TH 8,280 8,270 8,250 8,230 8,200

8 (-13.3) TH 8,930 8,910 8,890 8,870 8,840

(15.6) (18.3) (21.1) (23.9) (26.7)

33 (0.6) TH 12,720 12,690 12,660 12,610 12,560

38 (3.3) TH 13,530 13,500 13,460 13,410 13,360

43 (6.1) TH 14,380 14,350 # 14,300 14,250 14,190

48 (8.9) TH 15,240 15,200 15,150 15,090 15,020

53 (11.7) TH 16,090 16,050 15,990 15,920 15,850

58 (14.4) TH 16,910 16,850 16,790 16,720 16,640

63 (17.2) TH 17,730 17,670 17,600 17,520 16,690

65 (18.3) TH 18,040 17,980 17,910 17,480 16,620

TH : Total Heating Capacity (BTU/h)

NOTE

Rating conditions (#)

3. Above data represents the value when the operation frequency of a compressor is fixed.

: Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B.

5-5. Air Throw Distance Charts



0 5 10 15 20 25 30



0 5 10 15 20 25 30

Indoor Unit KHS0971

Cooling

Room air temp. : 80°F (26.7°C)

Fan speed : High

Axis air velocity (ft./sec.)

Vertical distance (ft.)

Horizontal distance (ft.)

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

Heating

Room air temp. :70°F (21.1°C) Fan speed : High

Horizontal distance (ft.)

Axis air velocity (ft./sec.)

Vertical distance (ft.)

: Flap angle 45°, : Axis air velocity 45 : Flap angle 60°, : Axis air velocity 60

° °

Indoor Unit KHS1271



0 5 10 15 20 25 30



0 5 10 15 20 25 30

Cooling

Room air temp. :80 Fan speed : High

Axis air velocity (ft./sec.)

Vertical distance (ft.)

(26.7°C)

°F

Horizontal distance (ft.)

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

Heating

Room air temp. :70°F (21.1°C) Fan speed : High

Horizontal distance (ft.)

Axis air velocity (ft./sec.)

Vertical distance (ft.)

: Flap angle 45°, : Axis air velocity 45 : Flap angle 60°, : Axis air velocity 60

° °

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor UnitKHS0971 Outdoor Unit

Cooling

Performance at 115V Single-phase 60Hz Rating conditions Running amp. A 0.45

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.

Heating

Performance at 115V Single-phase 60Hz Rating conditions Running amp. A 0.45

 CH0971

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor

Power input W45

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor

Power input W45

7.15 675

9.85 950

7.6

720

10.3 995

Rating conditions: Indoor air temperature 70°F (21.1°C) D.B.  Outdoor air temperature 47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.

Indoor Unit KHS1271 Outdoor Unit CH1271

Cooling

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor Performance at 115V Single-phase 60Hz Rating conditions Running amp. A 0.45

Power input W45

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.

10.45 1,045

Heating

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor Performance at 115V Single-phase 60Hz Rating conditions Running amp. A 0.45

Power input W45

11.25 1,120

10.9

1,090

11.7

1,165

Rating conditions: Indoor air temperature 70°F (21.1°C) D.B.  Outdoor air temperature 47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.

6-2. Electric Wiring Diagrams

Indoor Unit KHS0971 KHS1271

EVAPORATOR

GRN/YEL

CONNECTOR

1 2

FLAP

3 4 5

FLAP MOTOR

WARNING

disconnect power before checking, servicing and/or cleaning any electrical parts.

TERMINAL BASE

To avoid electrical shock hazard, be sure to

TO OUTDOOR UNIT

RED

WHT

WHT WHT

IND LAMP ASSY

BLK

WHT

RED

1 3 5 1 3 5

5P (BLU)

RED

PNK

BLU

BRN

YEL

1 2 3 4 5

1 2

FLAP

5P (WHT)

4 5

10P(

LAMP WHT

1 2 3 4 5

)

6 7 8 9

FAN MOTOR

GRN/YEL

FAN MOTOR CAPACITOR

(RED)

BRN PNK

PNK BRN

WHT

RED

BLK YEL

CONTROLLER

FAN

5P (WHT)

HALL IC

3P (WHT)

131

FMC 3P (WHT)

ROOM/COIL

4P(

WHT

ION

3P (

WHT

JEM-A

4P (WHT)

1 2 4

ION TERMINAL

ROOM THERMISTOR

BLK

)

BLK

COIL THERMISTOR

WHT

)

RED

BLK

CONNECTOR

BLK

RED

WHT

1 2 3 4 1 2 3 4

ION ASSY

8FA2-5257-71600-0

Outdoor Unit CH0971 CH1271

1P-CONNECTOR (WHT

WHT

CRANKCASE

HEATER

REACTANCE

)

1 1

)

WHT

W W W W

C-HEATER1C-HEATER2

YEL

112

YEL

L2WL1

CONTROLLER

WARNING

)

BLK

(

ORG

2P-CONNECTOR

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

BLK

POWER RELAY

GRN/YEL

25A

ACIN1

ACIN2

BLK

FERRITE

CORE

BLK

WHT

RED

BLK

WHT

TERMINAL

PLATE

GND

TO INDOOR UNIT

RED (PNK)

WHT

BLU

321

CONNECTOR (WHT)

1 2 3

CORE

FERRITE

BLU

RED

WHT

(PNK)

R/V

S/UC/W

COMPRESSOR

MOTOR

OVERLOAD RELAY

OUTDOOR

OUT DOOR

(OLR)

1 2 1 2

BLK

COIL

THERMISTOR

COIL/COMP

1 2 3 4 1 2 3 4

YEL

BLK

1 2 3 4 5 6 7

WHT

BLK

1 2 3 4 5 6 7 1 2 3 4 5 6 7

WHT

THERMISTOR

COMPRESSOR

GRN/YEL

WHT WHT

DCFM

BLK

BLU

RED

BLK

BLU

RED

FAN MOTOR

1 2 3 45566 1 2 3 4

YEL

RED

GRY

WHT

ORG

1 2 3 45566 1 2 3 4

YEL

7P-CONNECTOR (WHT)

MAGNETIC COIL

1 1 2 2

2P-CONNECTOR (BLK)

BLK

YEL

4WAY VALVE

1 3 1 3

BLK

COIL

BLK

WHT WHT

WHT

1 1 2 2

2P-CONNECTOR (WHT)

POWER

GND

SUPPLY

HIGH PRESSURE

SWITCH

BLK BLK

8FA2-5257-69100-3

7. MAINTENANCE

7-1. Address Setting of the Remote

Control Unit

The address can be set in order to prevent interference between remote controllers when two 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.

NOTE

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. Then, press and hold the ACL (reset) button with a pointed object such as the tip of a pen. After 5 seconds, release ACL button first, then release ION and 1 HR TIMER buttons, "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)

Ta b

Fig. 13

ACL button

Fig. 14

Test run mode

Self-diagnostic mode

Address setting mode

(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" signal received 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.

ION button

ADDRESS

ON/OFF operation button

1 HR.TIMER button

ACL (Reset) button

Fig. 15

7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit

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,

Pull the cover upward

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

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.

8. FUNCTIONS

8-1. Operation Functions

Emergency operation SENSOR DRY

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

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.

COOL HEAT STOP

(GREEN) (RED) (Lamp Off)

• The set temperature is 4°F(2°C) below the detected room temperature in the case of cooling operation, and 4°F(2°C) above the room temperature in the case of heating operation. The flap and fan speed settings are AUTO.

AUTO cooling/heating operation

 Selecting the operation mode

• When AUTO mode is selected, the microprocessor calculates the difference between the set temperature and the room temperature, and automatically switches to Cooling or Heating mode.

Room temp. Set temp. COOL Room temp. Set temp. HEAT

• As shown by the example in the figure below, with AUTO cooling/heating operation, the mode changes between Heating and Cooling mode according to changes in the relationship between the current room temperature and the set temperature.

 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.

Load

COOL zone

A zone

B zone

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

DRY A

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

DRY B

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

Monitor

• 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.

Example

Example of operation in AUTO mode with the set room temperature at 74°F(23°C).

Room temp.

Set temp.

Zone A

Zone B

Zone C

Zone B

Zone A

Compressor

Operation mode

More than

1 hour

ON ON ON

OFF OFF

Within

1 hour

HeatingCooling Cooling

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.

HIGH POWER

NIGHT SETBACK

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."

Frequency

MAX

30 min. 5 min.

Start End

Time

NOTE

 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.

Lamp colors

OPERATION lamp

HEAT operation Red DRY operation Orange COOL operation Green FAN operation Green DEFROSTING operation Red and Orange  alternately

TIMER lamp Green

QUIET lamp Green

ION lamp Green

 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.

Setting temperature

Press the NIGHT SETBACK button

2°F(1°C)

30 min. 30 min.

Time

 HEAT mode

When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4°F(2°C) when 30 minutes have passed after the selection was made, and then another 4°F(2°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 heating is needed.

Setting temperature

Press the NIGHT SETBACK button

4°F(2°C)

30 min. 30 min.

4°F(2°C)

Time

Timer backup

 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.

8-2. Protective Functions

Overload prevention during heating

During HEAT operation, the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated.

Approx.

127

(53)

Approx.

117

(47)

temperature °F(°C)

Indoor heat exchanger

 Area: Automatic capacity control

 When Point A has been exceeded, the operation frequency is

abcd

Indoor heat exchanger A. Control start B. Control end

reduced by a certain proportion.

 Area: Frequency increase is prohibited.

 At Point B and below, overload prevention is ended and

control is the same as in the

area.

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.

46 (8)

43 (6)

Cold-air prevention during heating

During heating, the fan speed is set to "LL" (very low) or stopped. As the temperature of the indoor heat exchanger rises, the fan speed is changed to the set speed.

High

Stopped

At stability of operation

(25)86(30)

Indoor heat exchanger

temperature °F(°C)

Set fan speed

At start of operation

Approx. 104

(40)

NOTE

• The fan speed is forcibly changed to "LL" beginning 30 seconds

after the thermostat turns OFF.

• At stability of operation refers to operation when the room

temperature has approached the set temperature.

• When HEAT operation starts, the indoor fan is stopped until the

temperature of the indoor heat exchanger reaches 68°F(20°C) or higher, or until the room temperature reaches 59°F(15°C) or higher.

Compressor discharge temperature control

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

36 (2)

temperature °F(°C)

Indoor heat exchanger

 Area: Automatic capacity control

 When the temperature drops below Point A, the operation

abcd

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 36°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.

Compressor discharge temperature °F(°C)

Approx.

214

(101)

Approx.

201

(94)

 Area: Automatic capacity control.

 When the temperature rises above Point A, the operation

abcd

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.

Defrost detection and release

Reverse-Cycle Defrosting

Defrosting Sequence

Heating operation

Outdoor fan ON 4-way valve ON

CT (Peak current cut-off control)

•

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 / heating 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.

(A)

Cooling Dry Heating

Peak current cut-off trips 22.5

Hz down 14.0 15.0

Frost sensing

Defrost detection occurs in either of the following cases:

•

The temperature of the heat exchanger remains at or below the L1 line for 3 minutes after the start of HEAT operation.

•

The temperature of the heat exchanger remains at or below the L2 line for 120 minutes after the start of HEAT operation.

Outdoor heat

exchanger temp.

L2 L1

Frosting area

Ambient temp.

Reverse-cycle defrosting operation

Compressor 1 minute after it is stopped,  compressor is ON. Outdoor fan OFF Indoor fan OFF 4-way valve OFF Operation lamp

Repeatedly switches between red and orange illumination.

NOTE

Electrical current setting for COOL operation is used during DEFROST operation.

Releasing of defrosting

Outdoor heating exchanger temp. is over 68°F(20°C). Defrosting operation lasts 12 minutes (maximum). 2 minutes after it is stopped, compressor is ON. 4-way valve is ON. Outdoor fan is ON.

NOTE

If the air conditioner is turned off during the defrosting cycle, it will continue defrosting and turn itself off after defrosting is completed.

9. TROUBLESHOOTING

9-1. Precautions before Performing Inspection or Repair

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.

9-2. Method of Self-Diagnostics

Follow the procedure below to perform detailed trouble diagnostics.

NOTE

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.

PROCEDURE

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

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

button. Then, press and hold the ACL (reset) button with a pointed object such as the tip of a pen. After 5 seconds, release ACL button first, then release ION and 1 HR TIMER buttons, "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.

ION button

< Clock display >

Test run mode

Self-diagnostics mode

ON/OFF operation button

1HR. TIMER button

•  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.

ACL (Reset) button

(1) Self-diagnostics Lamps

INDOOR UNIT

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

OPERATION button

REMOTE CONTROL receiver

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

Indication on indoor unit

Quiet

(3)(2) (1)

Timer Operation

....

OFF

....

Blinking

....

ON (Illuminated)

Code Diagnostics itemsDiagnostics contents

S01

S02

S03

S04

S05

S06

S07

E01

E02

E03

E04

E05

E06

E07

E08

E09

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

Outdoor electrical current detection failure

Indoor/outdoor communications failure (serial communications)

• HIC circuit failure

• Power Tr (transistor) circuit failure

Outdoor unit external ROM (OTP data) failure

Peak current cut-off

PAM circuit failure Active circuit failure

Compressor discharge overheat prevention activated.

Indoor fan operating failure

4-way valve switching failure Indoor zero-cross failure

No-refrigerant protection

(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 PCboard failure

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

Outdoor PCboard failure

(1) Mis-wiring (2) AC power failure (3) Blown fuse (4) Power Relay failure  (5) Indoor or outdoor PCboard failure (6) Outdoor Fan Motor failure (7) Reactor failure (8) High-Pressure Switch failure (9) Overload Relay failure (10) Magnetic Coil failure * See detailed flowchart in this section.

(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 PCboard failure

(1) External ROM data failure (2) Outdoor PCboard failure

(1) Instantaneous power outage (2) HIC or power transistor failure  (3) Outdoor PCboard failure

(1) Outdoor PCboard 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

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

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

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

PCboard

failure

E10

E11

E12

E13

DC compressor drive circuit failure

Outdoor fan operating failure

Outdoor system communications failure OLR operation Outdoor power supply open phase Outdoor coil freezing

Freeze-prevention operation activated.

(1) Open phase (2) Outdoor PCboard failure

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

(1) Mis-wiring (2) Blown fuse (3) Power Relay failure (4) Outdoor PCboard failure (5) Compressor failure * See detailed flowchart in this section.

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

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

No indicators illuminate and the

•

Check the indoor unit.

indoor fan does not rotate. Check the power voltage.

•

Is the fuse blown?

Normal

Replace the circuit

Replace the controller.

board or the fuse.

9-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

ControlNo. Check items (unit operation)

•

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 4 indicator lamps on the unit. If all 4 are blinking, the current mode is "TEST run."

If there are no problems with the above, then check the outdoor unit. For the "Test run" procedure, refer to the Appendix B "Installation Instructions".

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.

Blown

(2) Checking the outdoor unit

ControlNo. Check items (unit operation)

Apply the rated voltage between outdoor

1 The control panel LED (red) must illuminate.

unit terminals L and N.

Short-circuit the outdoor unit COM terminal

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

to the T-RUN terminal.

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

Using the TEST/T-RUN terminals

•

TEST/T-RUN terminals

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).

(TEST)/MV T-RUN COM

(3) Serial Communication Error Identification Procedure

If the lamps on the main body show the following conditions after the completion of self-diagnostics,

a communication error between the indoor unit and outdoor unit might be considered.

In such a case, identify the breakdown section by using the following procedure.

NOTE

Condition

Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure.

Lamp

E01

Quiet

Timer Operation :Off

(3) (2) (1)

: Blinking

: Illuminated

E12

< Before the Operation >

For terminal strip short circuit work or inter-unit wiring removal, turn off the power to

WARNING

avoid an electric shock. Release the terminal strip short circuit after the completion of self-diagnostics.

Do not perform the short-circuit work between any other terminals except for

CAUTION

specified ones on the specified terminal strip. If such work is performed between the incorrect terminals, the unit might be broken.

< Convenient Tool for Short-Circuit Work ( for example ) >

Alligator Clip

Cable

Alligator Clip

< Check Items before Troubleshooting Serial Communication Start >

After confirming that the following errors do not exist, start the "Troubleshooting Serial Communication" in "Condition: E01 and E12".

1. Mis -wiring (inter-unit cable, etc.)

2. AC power failure

3. Blown fuse

4. Power Relay failure

5. Outdoor Fan Motor failure (defective insulation, etc.)

(3-1) Condition: E01

Troubleshooting Serial Communication

Is the voltage of about DC12V

or more given between the terminals

2 and 3 on the outdoor unit terminal strip

(Serial Communication Line) ?

(Fig. 1)

Yes

6. Reactor failure (defective insulation, etc.)

7. High-Pressure Switch failure

8. Overload Relay failure

9. Magnetic Coil failure (defective insulation, short-circuit, etc.)

10. Compressor failure (defective insulation, etc.)

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 1

1. Turn OFF the power and wait until the power lamp (LED)

 of the outdoor unit controller is turned OFF.

2. Disconnect the cable from the terminal 3 on the indoor unit  terminal strip. (Fig. 2)

3. Turn ON the power.

1 2 43 5 6

1 2 3

Indoor Unit

Outdoor Unit

Power

Fig. 2

( Continued to the next page A. )

( Continued to the next page B. )

( Continued from the previous page A. )

( Continued from the previous page B. )

Defect or connection error

in the inter-unit cable

1. Turn OFF the power and wait until the power lamp (LED)  of the outdoor unit controller is turned OFF.

2. Short-circuit between the terminals 2 and 3 on the outdoor  unit terminal strip. (Fig. 3)

1. Turn ON the power and operate the system using the  remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation  start.

What is the latest self-diagnosis result ?

Yes

Condition: E12

Is the voltage of about DC22V to 24V given between the terminals

2 and 3 on the indoor unit terminal strip

(Serial Communication Line) ?

(Fig. 2)

Defect in the indoor unit

P.C. board

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 3

Defect in the outdoor unit

P. C. board.

Condition: E01

1. Turn off the power and wait until the power lamp (LED)  of the outdoor unit controller is turned OFF.

2. Remove the short-circuit between the terminals 2 and 3 on  the outdoor unit terminal strip.

3. Disconnect the cable from the terminal 3 on the indoor unit  terminal strip. (Fig. 4)

Short-circuit between the terminals 2 and 3 on the indoor unit terminal board. (Fig. 5)

1. Turn ON the power and operate the system using the  remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation  start.

What is the latest self-diagnosis result ?

Condition: E01

1 2 43 5 6

1 2 3

Indoor Unit

Condition: E12

Outdoor Unit

Power

Fig. 4

Defect or connection error

in the inter-unit cable

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 5

Defect in the indoor unit

P.C. board

(3-2) Condition: E12

Troubleshooting Serial Communication

1. Turn off the power and wait until the power lamp (LED)  of the outdoor unit controller is turned OFF.

2. Disconnect the cable from the terminal 3 on the Outdoor  unit terminal strip. (Fig. 6)

1. Turn ON the power and operate the system using the  remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation  start.

What is the latest self-diagnosis result ?

Condition: E12

1. Turn off the power and wait until the power lamp (LED)  of the outdoor unit controller is turned OFF.

2. Disconnect the cable from the terminal 3 on the indoor  unit terminal strip. (Fig. 7)

1. Turn ON the power and operate the system using the  remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation  start.

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 6

Condition: E01

Defect in the outdoor unit

P.C. board

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 7

What is the latest self-diagnosis result ?

Condition: E12

Defect in the indoor unit

P.C. board

Condition: E01

Defect in the inter-unit

cable

9-4. Trouble Diagnosis of Fan Motor

9-4-1. 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.

Perform the trouble diagnosis by Test Run mode described on Installation Instructions.

Important:

[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)

(Diagnostic results)

(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)

(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, measure the voltage in Test Run mode.

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

unit controller (3 locations).

Measurement location

(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

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

DC 110V 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.

(Replace the controller .)

Normal value

[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.

9-5. 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

Trouble

Either of the following trouble may occur.

1. The unit may stop suddenly during operation.

2. Indicator lamps may flicker.

(The fundamental concept is to make the

system less susceptible to noise.)

distance from the noise source. -

1. Use shielded wires.

2. Move unit away from the noise source.

Correction

- Insulate for noise or

(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.

Trouble

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

2. Static occurs in the radio sound.

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.

Correction

10. CHECKING ELECTRICAL COMPONENTS

10-1. Measurement of Insulation

Resistance

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

10-1-1. 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)

10-1-2. 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.

Probe

Copper tube or metallic part

Clip

Fig. 1

Terminal plate

Clip

Ground wire

Insulation tester

Probe

Insulation tester

10-1-3. 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)

10-1-4. 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)

NOTE

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.

Copper tube or metallic part

Metallic part

Fig. 2

Probe

Clip

Insulation tester

Fig. 3

From fan motor, compressor and other parts

Probe

Clip

Fig. 4

Insulation tester

10-2. 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.

Fuse

PCB Ass'y

Fig. 5

Fuse

Fig. 6

11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

11-1. Characteristics of New Refrigerant R410A

11-1-1. 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.

11-1-2. Components (mixing proportions)

HFC32 (50%) / HFC125 (50%)

11-1-3. 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.

CAUTION

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.

11-2. 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.

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" (15.88 mm)

Size of flare

Tubing precautions

Specification A

Flare tool for R410A Conventional flare tool (for R22)

0 to 0.0196"

(0 to 0.5 mm)

Flare tool for R410A

Conventional flare tool (R22)

0.0472"

(1.2 mm)

Spacer

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.

11-3. Tools Specifically for R410A

For servicing, use the following tools for R410A

Tool Distinction Tool Name

Gauge manifold

Charging hose

Gas leak detector

Refrigerant cylinder

Charging cylinder

Refrigerant recovery unit

Tools specifically for R410A

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

Tools which can be com-

monly used for R22,

R407C, and R410A

CAUTION

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"

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.

Torque wrench

Cutter, reamer

Welding tool, nitrogen gas cylinder

11-4. 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

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

11-5. 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 "11-3. Tools Specifically for R410A."

11-5-1. 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

(1) Recover refrigerant

(2) Replace compressor

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

Length of tubing

Evacuation time

Less than 33 ft. (10 m)

More than 10 minutes

(3) Check for sealing

(4) Evacuation

(5) Recharge

More than 33 ft. (10 m)

More than 15 minutes

(5) Recharging

Configuration and characteristics of cylinders

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.

CAUTION

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

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.

Valve

Liquid

Single valve

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

Fig. 1

Valve

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.

CAUTION

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

Charging

cylinder

Open

Liquid

Single valve (with siphon tube)

Charge with cylinder in normal position.

Fig. 2

NO!

Liquid

Refrigerant

cylinder

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

Fig. 3

11-6. 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.

(1) Detect leaks

(2) Recover refrigerant

(3) Weld leaking points

(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

Length of tubing

Evacuation time

(6) Recharging

Less than 33 ft. (10 m)

More than 10 minutes

(4) Check for sealing

(5) Evacuation

(6) Recharge

More than 33 ft. (10 m)

More than 15 minutes

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

11-7. Charging Additional Refrigerant

11-7-1. 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.

CAUTION

Never charge additional refrigerant if refrigerant is leaking from the unit. Follow instructions given in "11-6. In Case Refrigerant is Leaking" and completely carry out repairs. Only then should you recharge the refrigerant.

11-8. Retro-Fitting Existing Systems

11-8-1. 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.

11-8-2. 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.

APPENDIX A

KHS0971 + CH0971 KHS1271 + CH1271

INSTRUCTION MANUAL

(OI-852-6-4180-802-00-2)

A-1

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.

• Auto. Flap Control

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

• Automatic Switching between Cooling and Heating

This unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting.

• Hot Start Heating System

Right from the start, the air is warm and comfortable. This system prevents any cold blasts at the beginning while the heat pump is warming up, or even defrosting.

• Automatic Restart Function for Power Failure

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

• High Power Operation

If not in Auto 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)

OI-802-2-EG

Contents

Page

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. Automatic Operation .....................................................................................12

2. Manual Operation .........................................................................................13

3. Adjusting the Fan Speed...............................................................................14

4. Fan Only........................................................................................................14

5. Night Setback Mode......................................................................................15

6. QUIET Mode .................................................................................................16

7. HIGH POWER Mode ....................................................................................16

8. ION Mode......................................................................................................16

Special Remarks....................................................................................................17

Setting the Timer....................................................................................................18

Using the 1-Hour OFF Timer .................................................................................20

Tips for Energy Saving...........................................................................................20

Adjusting the Airflow Direction ...............................................................................21

Operation without the Remote Control Unit ...........................................................22

Care and Cleaning .................................................................................................22

Troubleshooting......................................................................................................25

Operating Range....................................................................................................25

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.

OI-802-3EG

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 heatgenerating 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 or heat the room too much if babies or invalids are present.

OI-802-4-EG

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.

OI-802-5EG

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 heating

and cooling operation.

Each time this button is pressed, the type of operation conducted is indicated by the changing color of the OPERATION lamp. Press the button and select the lamp color that suits your preference for operation.

Cooling operation

(green)

Heating operation

(red)

Stop

(lamp off)

OPERATION lamp This lamp lights when the system is in the continuous AUTO (red or green),

HEAT (red), DRY (orange), COOL (green) and FAN (green) mode. The OPERATION lamp lights up red and orange alternately when the system is defrosting.

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.

OI-802-6-EG

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

AUTO .........................................

HEAT ..........................................

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

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

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

(2) Fan speed

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

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

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

(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. flap indication ....................

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

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

(3) Temperature setting

60–86°F When set to 80 °F

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

OI-802-7EG

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

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

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

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

Remote Control Unit

Transmitter

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

Transmitter 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

OI-802-8-EG

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 AUTO, HEAT, DRY, COOL or FAN mode.

(AUTO) : When this setting is selected, the air conditioner calculates the difference

between the thermostat setting and the room temperature and automatically switches to the ‘‘COOL’’ or ‘‘HEAT’’ mode as appropriate.

(HEAT) : The air conditioner makes the room warmer.

(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 “5. Night Setback Mode”. When you press this button in the

HEAT, 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 heating operation, the flap is set to

position (3) in the following chart. 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 HEAT, 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”.

NOTE

OI-802-9EG

The indoor fan runs continuously when the system is in normal operation. It does not turn off when the desired room temperature is reached. If Night Set Back mode is selected, the fan will turn off intermittently during cooling operation in order to control air flow.

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.

How to Install Batteries

ACL button

NOTE

Using the Remote Control Unit

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.

• 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.

OI-802-10-EG

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

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.

ear 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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Operation with the Remote Control Unit

1. Automatic Operation

This unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting.

STEP 2

STEP 1

NOTE

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

Once mode is selected and the unit is preset by following the steps below, you can have the air conditioner automatically bring the room to the desired temperature simply by pressing the ON/OFF operation button.

STEP 1 Press the MODE selector button to .

STEP 2 Press the ON/OFF operation button.

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

• To change the temperature setting; press the temperature setting buttons and change the setting to the desired temperature.

OI-802-12-EG

2. Manual Operation

Operation with the Remote Control Unit (continued)

STEP 2

STEP 3

STEP 1

NOTE

STEP 4

STEP 5

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

If the automatic operation settings of the unit do not meet your needs, 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 heating operation → 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.

or 86 °F max.

60 °F min.

OI-802-13EG

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

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

(Refer to “Adjusting the Airflow Direction” on page 21.)

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

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.

3. 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 ]

4. 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 ).

OI-802-14-EG

5. 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.

A. In Cooling and DRY

Mode: ( and )

B. In Heating Mode: ( )

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

When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4 °F when 30 minutes have passed after the selection was made, and then another 4 °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 heating is needed.

OI-802-15EG

Setting temperature

Press the NIGHT SETBACK button

30 min.

4°F

30 min.

4°F

Time

6. QUIET Mode

7. 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 except automatic operation.

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

8. ION Mode

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”.

• HIGH POWER Mode cannot be used when the operation mode is Automatic Operation.

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

NOTE

• When set to High fan speed during heating operation, the fan runs at High fan speed even though the mark is displayed.

• 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.

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.

OI-802-16-EG

Special Remarks

‘‘DRY’’ ( ) Operation

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

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.

Heating ( ) Operation

Heating performance • Because this air conditioner heats a room by drawing in the heat of the

outside air (heat pump system), the heating efficiency will fall off when the outdoor temperature is very low. If sufficient heat cannot be obtained with this air conditioner, use another heating appliance together with it.

Defrosting • When the outdoor temperature is low, frost or ice may form on the heat

exchanger coil, reducing heating performance. When this happens, a microcomputer defrosting system operates. At the same time, the fan on the indoor unit stops and the OPERATION lamp lights up red and orange alternately until defrosting is completed. Heating operation restarts after several minutes. (This interval will vary slightly depending upon the outdoor temperature and the way in which frost forms.)

Cold draft prevention • For several minutes after the start of heating operation, the indoor fan runs at

Cooling ( ) Operation

Power failure during

operation

Clicking Sound

Clicking sound is heard from

the air conditioner

Remote Control Unit

lower speed until the indoor heat exchanger coil has warmed up sufficiently. However, the fan may remain stopped when the room temperature is low. This is because the COLD DRAFT PREVENTION SYSTEM is operating.

• 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.

• 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 heating or cooling operation, any plastic parts may expand or 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-802-17EG

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.

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.

OI-802-18-EG

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.

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

2. Press the Advance, Return ( ,

) button until AM 7:10 is

displayed.

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.

OI-802-19EG

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.

OI-802-20-EG

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 heating, cooling, or dehumidifying operation.

SWEEP

HEAT

OI-802-21EG

NOTE

CAUTION

• The flap automatically closes when the unit is off.

• During the heating operation, the fan speed will be very low and the flap will

be in the horizontal position (position ) until the air being blown out of the unit begins to warm. Once the air warms up, the flap position and fan speed change to the settings specified with the remote control.

• 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.

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 type of operation conducted is indicated by the changing color of the OPERATION lamp. Press the button and select the lamp color that suits your preference for operation.

OPERATION button

NOTE

Cooling operation

(green)

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

Heating operation

(red)

Stop

(lamp off)

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.

OI-802-22-EG

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. Press in the bottom right and left corners of the air intake grille to attach the indoor unit.

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

OI-802-23EG

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

NOTE

Cleaning the main unit

and remote control

unit

Removing and

remounting the air

intake grille

CAUTION

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

• In general, the filter should be sucked to remove dust in low fan speed of a 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 23.

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

Washing the grille

with water

Cleaning the negative

ion generator

NOTE

• 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.

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)

OI-802-24-EG

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. 2. Contact service center.

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

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 (or heating) performance. 1. Dirty or clogged air filter. 1. Clean air filter to improve airflow.

Clicking sound is heard from the air conditioner.

Trouble in system. Contact service center.

2. Heat source or many people in room.

3. Doors and/or windows are open. 3. Shut them to keep the heat (or cold)

4. Obstacle near air intake or air discharge port.

5. Thermostat is set too high for cooling (or too low for heating).

6. (Outdoor temperature is too low for heating.)

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

4. Replace batteries.

2. Eliminate heat source if possible.

out.

4. Remove it to ensure good airflow.

5. Set the temperature lower (or higher).

6. (Consult your dealer or try to use another heat appliance.)

This is normal, and the sound will soon disappear.

OPERATION lamp lights but outdoor unit will not run.

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

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:

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

HEATING Max. 80 °F DB / 67 °F WB 75 °F DB / 65 °F WB

Min. – DB / – WB 0 °F DB

OI-802-25EG

APPENDIX B

INSTALLATION INSTRUCTIONS

KHS0971 + CH0971 KHS1271 + CH1271

(II-852-6-4189-990-00-5)

A-2

INSTALLATION INSTRUCTIONS

– Inverter Split System Air Conditioner –

This air conditioner uses the new refrigerant R410A.

NOTE

Contents

IMPORTANT!

Please Read Before Starting .................................. 2

1. GENERAL .......................................................... 3

1-1. Tools Required for Installation (not supplied) 1-2. Accessories Supplied with Unit 1-3. Optional Copper Tubing Kit 1-4. Type of Copper Tube and Insulation Material 1-5. Additional Materials Required for Installation

2. INSTALLATION SITE SELECTION ................... 4

2-1. Indoor Unit 2-2. Outdoor Unit

3. HOW TO INSTALL THE INDOOR UNIT ............. 6

3-1. Remove the Rear Panel from the Unit 3-2. Make a Hole 3-3. Install the Rear Panel on the Wall 3-4. Remove the Grille to Install the Indoor Unit 3-5. Shape the Indoor Side Tubing 3-6. Wiring Instructions 3-7. Recommended Wire Length and Diameter 3-8. Wiring Instructions for Inter-unit Connections 3-9. Mounting 3-10. Drain Hose

Refrigerant service valve size = 5/16"

Page

COOL/ DRY/HEAT Model

Model Combinations

Combine indoor and outdoor units only as listed below.

Indoor Unit Outdoor Unit

KHS0971 CH0971

KHS1271 CH1271

Power Source: 60 Hz, single-phase, 115 V

Be sure to read the yellow instruction sheet attached to the outdoor unit for models using the new refrigerant R410A.

7. REMOTE CONTROL UNIT INSTALLATION

POSITION ......................................................... 23

7-1. Mounting on a Wall

8. ADDRESS SWITCH .......................................... 24

8-1. Address Setting of the Remote

Control Unit

4. HOW TO INSTALL THE OUTDOOR UNIT ....... 16

4-1. Wiring Instructions for the Outdoor Unit

5. REFRIGERANT TUBING .................................. 17

5-1. Use of the Flaring Method 5-2. Flaring Procedure with a Flare Tool 5-3. Caution before Connecting Tubes Tightly 5-4. Connecting Tubing between Indoor and

Outdoor Units 5-5. Insulation of Refrigerant Tubing 5-6. Taping the Tubes 5-7. Finishing the Installation

6. AIR PURGING................................................... 19

I Air Purging with a Vacuum Pump (for Test Run) I Basic Functions of the Service Valves I Pump Down

SANYO Commercial Solutions In Canada A Division of SANYO North America Corporation SANYO Canada Inc. Cornerstone Business Park, 1-300 Applewood Crescent, Concord 1062 Thorndale Avenue, Ontario, L4K 5C7, Canada

Bensenville, IL 60106, U.S.A.

NOTE

The illustrations are based on the typical appearance of a standard model. Consequently, the shape may differ from that of the air conditioner that you are installing.

IMPORTANT! Please Read Before Starting

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

Carefully read this instruction booklet before beginning.

Follow each installation or repair step exactly as shown.

Observe all local, state, and national electrical codes.

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

This symbol refers to a hazard

WARNING

CAUTION

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.

If Necessary, Get Help

In Case of Improper Installation

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

SPECIAL PRECAUTIONS

WARNING

ELECTRICAL SHOCK CAN CAUSE SEVERE

PERSONAL INJURY OR DEATH. ONLY A

QUALIFIED, EXPERIENCED ELECTRICIAN

SHOULD ATTEMPT TO WIRE THIS SYSTEM.

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

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

death.

• Ground the unit following local electrical codes.

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

When Transporting

When Wiring

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

• Turn 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

CAUTION

• 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.

1. General

This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.

1-1. Tools Required for Installation (not supplied)

1. Standard screwdriver

2. Phillips head screwdriver

3. Knife or wire stripper

4. Tape measure

5. Carpenter’s level

1-2. Accessories Supplied with Unit

Table 1

Parts Figure Q’ty Parts Figure Q’ty

Remote control unit

Remote control unit holder

Tapping screw

Rawl plug

Truss-head Phillips

/32 ¥5/8" (4¥16 mm)

6. Sabre saw or key hole saw

7. Hacksaw

8. Core bits

9. Hammer

10. Drill

11. Tube cutter

12. Tube flaring tool

13. Torque wrench

14. Adjustable wrench

15. Reamer (for deburring)

Parts Figure Q’ty

Hex wrench*

Clamp

AAA alkaline battery

Air clean filter

Drain hose

adapter

Cushion rubber*

1-3. Optional Copper Tubing Kit

Copper tubing for connecting the outdoor unit to the indoor unit is available in kits which contain the narrow and wide tubing, fittings and insulation. Consult your nearest sales outlet or A/C workshop.

1-4. Type of Copper Tube and Insulation Material

If you wish to purchase these materials separately from a local source, you will need:

1. Deoxidized annealed copper tube for refrigerant tubing as detailed in Table 2.

Cut each tube to the appropriate lengths 1' to 1'4" (30 cm to 40 cm) to dampen vibration between units.

*Packed in the outdoor unit.

2. Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing. Wall thickness of the insulation should be not less than 5/16" (8 mm).

3. Use insulated copper wire for field wiring. Wire size varies with the total length of wiring. Refer to 3-6. Wiring Instructions for details.

CAUTION

Check local electrical codes and regulations before obtaining wire. Also, check any specified instructions or limitations.

Table 2

Model

KHS0971/1271 1/4" (6.35 mm) 0.0314" (0.8 mm) 3/8" (9.52 mm) 0.0314" (0.8 mm)

Outer Dia. Thickness Outer Dia. Thickness

Narrow Tube Wide Tube

1-5. Additional Materials Required for Installation

1. Refrigeration (armored) tape

2. Insulated staples or clamps for connecting wire (See local codes)

3. Putty

4. Refrigeration lubricant

5. Clamps or saddles to secure refrigerant tubing

2. Installation Site Selection

2-1. Indoor Unit

WARNING

AVOID:

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.

Indoor unit

2" (5 cm)

min.

Outside drainage

Fig. 1

6" (15 cm) min.

Drain hose

2" (5 cm)

min.

G direct sunlight.

G nearby heat sources that may affect performance of the unit.

G areas where leakage of flammable gas may be expected.

G places where large amounts of oil mist exist.

DO:

G select an appropriate position from which every corner of the

room can be uniformly cooled. (High on a wall is best.)

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

G select a location where tubing and drain hose have the

shortest run to the outside. (Fig. 1)

G allow room for operation and maintenance as well as unre-

stricted air flow around the unit. (Fig. 2)

G 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 3 and Fig. 3a.

G 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.

Front View

Fig. 2

INDOOR UNIT

Elevation difference (H)

Fig. 3a

CAUTION

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

Tubing length (L)

OUTDOOR UNIT

Indoor unit

Minimum height from floor level

5' (1.5 m)

Floor level

Wall

Fig. 3b

Table 3

Max. Allowable Tubing Limit of Tubing Limit of Elevation Required Amount of

Model Length at Shipment Length (L) Difference (H) Additional Refrigerant

(ft.) (ft.) (ft.) (oz./ft.)*

KHS0971 25 50 23 0.16

KHS1271 25 65 23 0.16

* If total tubing length becomes 25 to 50 ft. (Max.) or 25 to 65 ft. (Max.), charge additional refrigerant (R410A) by 0.16 oz./ft.

No additional charge of compressor oil is necessary. For more detailed charging information, refer to the Technical & Service Manual.

2-2. Outdoor Unit

AVOID:

G heat sources, exhaust fans, etc. (Fig. 4)

G damp, humid or uneven locations.

DO:

G choose a place as cool as possible.

G choose a place that is well ventilated.

G allow enough room around the unit for air intake/

exhaust and possible maintenance. (Fig. 5a)

G provide a solid base (level concrete pad, concrete

block, 4" × 1'4" (10 × 40 cm) beams or equal), a minimum of 4" (10 cm) above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Figs. 5b and 5c)

CAUTION

A solid base must not cover the hole of the bottom plate.

Hot air

Outdoor unit

Air intake Min. 2" (5 cm)

Min.

2" (5 cm)

Air discharge

Fig. 4

Valve side Min. 10" (25 cm)

Min. 8" (20 cm)

Exhaust fan

Heat source

Obstacle above

Min.

7' (2 m)

Air discharge

Min.

7' (2 m)

Obstacle

G Install cushion rubber under unit’s feet to reduce

vibration and noise. (Fig. 5d)

G use lug bolts or equal to bolt down unit, reducing

vibration and noise.

G Install in a location where no antenna of a television

or radio exists within 10' (3 m).

Air intake

Concrete or equal

Drain holes

About 16" (40 cm)

Fig. 5a

Fig. 5b

Ground

Anchor bolts (4 pcs.)

Min. 4" (10 cm)

About 4" (10 cm)

Min. 2" (5 cm)

Air intake

Fig. 5c

Cushion rubber

Fig. 5d

3. How to Install the Indoor Unit

3-1. Remove the Rear Panel from the Unit

(1) Remove and discard the set screw on the rear

panel. (Fig. 6)

(2) Press the 2 LL marks on the frame cover and disen-

gage the stationary tabs from the frame. (Fig. 7)

(3) Remove the rear panel.

Set screw only for transportation

NOTE

Tubing can be extended in 5 directions as shown in Fig.

8. Select the direction you need providing the shortest

run to the outside unit.

G When left tubing is to be done, switch the drain hose

and drain cap. (For details, refer to “Switching drain hose and drain cap” on page 14.)

3-2. Make a Hole

(1) Place the rear panel from the indoor unit on the wall

at the location selected. Make sure the panel is horizontal, using a carpenter’s level or tape measure to measure down from the ceiling. Wait until after cutting the hole before attaching the rear panel to the wall.

(2) Determine which side of the unit you should make

the hole for tubing and wiring. (Fig. 9)

NOTE

In the case of left-rear tubing, use the measurement points 2-3/4" (70 mm) from the edge of the rear panel for precise placement of the hose outlet. (Fig. 9)

Left tubing

Left-rear tubing

Fig. 6

Rear panel

marks

Fig. 7

Right-rear tubing (recommended)

Right tubing

Downward tubing

Fig. 8

(3) Before making the hole, check carefully that no

studs or pipes are directly run behind the spot to be cut.

CAUTION

Also avoid areas where electrical wiring or conduits are located.

The above precautions are also applicable if tubing goes through the wall in any other location.

2-3/4" (70 mm)

Fig. 9

(4) Using a sabre saw, key hole saw or hole-cutting drill

attachment, cut a hole in the wall. See Table 4 and Fig. 10.

Table 4

Hole Dia.

2-9/16" (65 mm)

(5) Measure the thickness of the wall from the inside

edge to the outside edge and cut PVC pipe at a slight angle 1/4" (6 mm) shorter than the thickness of the wall. (Fig. 11)

(6) Place the plastic cover over the end of the pipe (for

indoor side only) and insert the pipe in the wall. (Fig.

12)

3-3. Install the Rear Panel on the Wall

Be sure to confirm that the wall is strong enough to suspend the unit.

See either Item a) or b) below depending on the wall type.

a) If Wooden Wall

(1) Attach the rear panel to the wall with the 8 screws

provided. (Fig. 13)

NOTE

Hole should be made at a slight downward slant to the outdoor side.

Indoor side

Outdoor side

Fig. 10

PVC pipe (Locally purchased)

Cut at sli

ht angle

Fig. 11

INSIDE OUTSIDE

Wall

Plastic cover

(Locally purchased)

PVC pipe

Slight angle

If you are not able to line up the holes in the rear panel with the beam locations marked on the wall, use rawl plugs or toggle bolts to go through the holes on the panel or drill 3/16" (5 mm) dia. holes in the panel over the stud locations and then mount the rear panel.

(2) Double check with a carpenter’s level or tape mea-

sure that the panel is level. This is important to install the unit properly. (Fig. 14)

(3) Make sure the panel is flush against the wall. Any

space between the wall and unit will cause noise and vibration.

b) If Block, Brick, Concrete or Similar Type Wall

Make 3/16" (4.8 mm) dia. holes in the wall. Insert rawl plugs for appropriate mounting screws. (Fig. 15)

Fig. 12

Fig. 13

Fig. 14

3/16" (4.8 mm) dia. hole

Rawl plug

Fig. 15

3-4. 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.

Air intake grille

Grille

CAUTION

Be sure to wear work gloves during installation to avoid being cut by the sharp aluminum fins of the heat exchanger.

How to remove the grille

(1) Grasp both ends of the air intake grille, and remove it

by opening towards the front and pulling towards you. (Fig. 16a)

(2) Remove the 2 screws. (Fig. 16b)

(3) Remove the screw on the right side cover plate and

open the cover. (Fig. 17a)

(4) Take out the thermistor from the grille. (Fig. 17b)

(5) Pull the lower part of the grille toward you to remove.

(Fig. 18a)

(6) Use a standard screwdriver to push on the tabs to

remove the grille.

How to replace the grille

(1) Reinstall the grille into the lower part while aligning

its tabs on the upper part. (Fig. 18b) Insert the tabs in the slots and push the lower part of the grille back into position.

Screw cover

Thermistor

Fig. 17a

Ta b

Fig. 16a

Fig. 16b

Cover

Thermistor

Fig. 17b

Grille

Fram e

(2) Make sure that the grille and frame are firmly fitted

together by engaging the tabs.

(3) Attach the thermistor on the grille. (Fig. 17a)

(4) Close the cover and replace the screw. (Fig. 17a)

(5) Affix the grille with the 2 previously removed

screws. (Fig. 16b)

(6) Install the air intake grille.

(a) 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. 19a)

(b) Press the bottom right and left corners of the air

intake grille to attach it to the indoor unit. (Fig. 19b)

NOTE

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.

Ta b

Fig. 18a

Fig. 18b

Groove

Fig. 19b

Fig. 19a

3-5. Shape the Indoor Side Tubing

(1) Arrangement of tubing by direction

a) Right or left tubing

Cut out the corner of the right/left frame with a hacksaw or the like. (Figs. 20 and 21)

b) Right-rear or left-rear tubing

In this case, the corner of the frame need not be cut.

(2) To mount the indoor unit on the rear panel:

Hang the 2 mounting slots of the unit on the upper tabs of the rear panel. (Fig. 22)

3-6. Wiring Instructions

General precautions on wiring

(1) Before wiring, confirm the rated voltage of the unit as

shown on its nameplate, then carry out the wiring closely following the wiring diagram.

(2) Provide a power outlet to be used exclusively for

each unit, with a power supply disconnect and circuit breaker for overcurrent protection provided in the exclusive line.

Frame

Left tubing outlet

Fig. 20

Frame

Right tubing outlet

Fig. 21

(3) To prevent possible hazards due to insulation fail-

ure, the unit must be grounded.

(4) Each wiring connection must be done tightly and in

accordance with the wiring system diagram. Wrong wiring may cause the unit to misoperate or become damaged.

(5) Do not allow wiring to touch the refrigerant tubing,

compressor, or any moving parts of the fan.

(6) Unauthorized changes in the internal wiring can be

very dangerous. The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes.

Fig. 22

3-7. 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 5 lists recommended wire lengths and diameters for power supply systems.

NOTE

Refer to the wiring system diagram (Fig. 23) for the meaning of (A), (B), and (C) in Table 5.

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

Table 5

(A)+(B) (A) Power Supply Wiring Length (ft) (C) Control

(B) Power Line Length (ft) Line Length (ft)

Model (#14) (#12) (#14)

CH0971, CH1271 131 (Max.) 230 (Max.) 65 (Max.) 20A

# ... AWG (American Wire Gauge)

WARNING

WIRING SYSTEM DIAGRAM

Fuse or Circuit AWG

Breaker Capacity

G 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.).

G Each wire must be firmly connected. G No wire should be allowed to touch refrigerant tubing, the

compressor, or any moving part.

WARNING

G To avoid the risk of electric shock, each air conditioner

unit must be grounded.

G For the installation of a grounding device, please

observe local electrical codes.

G 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.

G Place a dedicated ground more than 7' (2 m) away from

other grounds and do not have it shared with other electric appliances.

INDOOR

UNIT

Terminal Terminal

Disconnect

switch Field supply

(C)

Grounding line

115 V

(B)

OUTDOOR

UNIT

Fig. 23

NOTE

Disconnect switch may be required by national or local codes.

CAUTION

Always comply with national and local code requirements.

Power supply

(A)

Grounding line

Single phase 115V 60HZ

CAUTION

G 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.

G 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.

3-8. Wiring Instructions for Inter-unit Connections

(1) Insert the inter-unit wiring (according to local codes)

into the through-the-wall PVC pipe. Run the wiring toward the indoor side allowing approx. 10" (25 cm) to extend from the wall face. (Fig. 24)

Rear panel

Wall

Plastic cover

(2) Grasp both ends of the air intake grille, and remove

it by opening towards the front and pulling towards you.

(3) Remove the screw on the right side cover plate and

open the cover. (Fig. 25)

(4) Route the inter-unit wiring from the back of the

indoor unit and pull it toward the front for connection. (Fig. 26a, 26b)

(5) Connect the inter-unit wiring to the corresponding

terminals on the terminal plate (Fig. 26a, 26b) while referring to the wiring diagram.

(6) Be sure to secure the wiring with the provided

clamp.

NOTE

When closing the air intake grille, press on both corners. (Fig. 27)

Please refer to “How to replace the grille” on page 8 for installing the air intake grille.

Wiring

10" (25 cm)

Fig. 24

Cover

Fig. 25

Terminal plate

Fig. 27

Fig. 26a

Inter-unit wiring

Earth plate

Lock nut

Top of conduit connector

Fig. 26b

Screw and special washer

Ring connector

Wire

WARNING

Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected.

When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate.

How to connect wiring to the terminal

a) For Indoor Unit

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

insulation to expose the wire about 9/32" (7 mm). See the label (Fig. 28) near the terminal plate.

(2) Using a screwdriver, loosen the terminal screw on

the terminal plate.

(3) Insert the wire and tighten the terminal screw com-

pletely using a screwdriver.

b) For Outdoor Unit

I For solid core wiring (or F-cable)

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

insulation to expose the solid wire about 15/16" (25 mm). (Fig. 29)

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

on the terminal plate.

9/32"

STRIP SIZE

(7 mm)

Fig. 28

Solid wire

Strip 15/16" (25 mm)

Insulation

Fig. 29

Stranded wire

Strip 3/8" (10 mm)

(ACTUAL

SIZE)

Loop

Ring connector

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

suitable for the terminal screw.

(4) Shape the loop wire properly, place it on the termi-

nal plate and fix it securely with the removed terminal screw using a screwdriver.

I For stranded wiring

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

insulation to expose the stranded wiring about 3/8" (10 mm) and tightly twist the wire ends. (Figs. 30 and 31)

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

on the terminal plate.

(3) Using a ring connector fastener or pliers, securely

clamp each stripped wire end with a ring connector. (Fig. 30)

(4) Place the ring connector wire, and replace and

tighten the removed terminal screw using a screwdriver. (Fig. 32)

Wire

Special washer

Fig. 30

Twist wire ends

Fig. 31

Screw

Ring connector

Terminal plate

Fig. 32

3-9. Mounting

(1) To install the indoor unit, mount the indoor unit onto

the 2 tabs on the upper part of the rear plate.

(2) Hold down the air discharge outlet and press the

lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate. (Fig. 33)

NOTE

For tubing, choose either the right or left tubing direction and follow the steps below. This work can be made easier by placing padding material (such as styrofoam) at the rear right side of the indoor unit. (Fig. 34)

I Right-side tubing

(1) Shape the refrigerant tubing so that it can easily go

into the wall hole. (Fig. 35)

Push

Fig. 33

(2) Push the wiring, refrigerant tubing, and drain hose

through the hole in the wall. Adjust the indoor unit so it is securely seated on the rear panel. (Fig. 36)

(3) Carefully bend the tubing (if necessary) to run along

the wall in the direction of the outdoor unit and then tape as far as the fittings. (See Caution on page

18.) The drain hose should come straight down the wall to a point where water runoff won’t stain the wall.

(4) Connect the refrigerant tubing to the outdoor unit.

(After performing a leak test on the connecting part, insulate it with the tubing insulation. (Fig. 37a)) Also, refer to Section 5-4. Connecting Tubing between Indoor and Outdoor Units.

(5) Assemble the refrigerant tubing, drain hose, and

conduit (including inter-unit wiring) as shown in Fig. 37b.

Refrigerant tubing

Padding material

Fig. 34

Rear panel

Cover

Refrigerant tubing

Inter-unit wiring

Drain hose

Fig. 35

Fig. 37a

Insulation

Conduit

Inter-unit wiring

Fig. 37b

Drain hose

Fig. 36

I Left-side tubing

Rear panel

(1) Lead the tubing and drain hose through the wall,

allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attachment. (Fig. 38)

(2) Switch the drain hose and drain cap.

Switching drain hose and drain cap

(a) Locate the drain hose and the drain cap. (Fig.

39)

(b) Remove the screws fastening the drain hose on

the right side, and pull out the drain hose to remove it. (Fig. 39)

on the left side. (If you cannot pull it off by hand, use a long-nose pliers.)

(d) Reattach the drain hose to the left side and the

drain cap to the right side. (Fig. 40a)

Drain hose

Slide the drain hose fully onto the drain pan outlet until the drain hose edge is pushed into the insulation. Check that the screw holes in the drain bracket and the drain pan outlet are aligned and securely in contact, then fasten them with the screw. (After attaching the drain hose, check that it is attached securely.) (Fig. 40c)

Hole in wall

Drain hose

Drain cap

Bent part

Fig. 38

Fig. 39

Wide tube

Narrow tube

Drain cap

Drain hose

Clamp

Drain cap

Use a Phillips screwdriver to push the drain cap in firmly. (If it is difficult to push in, wet the cap with water first.)

(3) Install the indoor unit on the rear panel.

(4) Connect the tubing and wiring led inside from out-

doors.

(5) After completing a leak test, bundle the tubing

together with armoring tape and store it inside the tubing storage area at the back of the indoor unit and hold it with clamps. (Figs. 40a and 41)

Insulation

Drain bracket

Drain hose

Fig. 40c

Fig. 40a

Screw hole

Drain bracket

Conduit

Drain pan outlet

Drain hose

Screw

Fig. 40b

Refrigerant tubing

Inter-unit wiring

Fig. 41

To unmount indoor unit

WARNING

Risk of Electric Shock

Press the 2 LL marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (Fig. 42)

3-10. Drain Hose

a) The drain hose should be slanted downward to the

outdoors. (Fig. 43)

b) Never form a trap in the course of the hose.

c) If the drain hose will run in the room, insulate the

hose with insulation* so that chilled condensation will not damage furniture or floors. (Fig. 44)

* Foamed polyethylene or its equivalent is recom-

mended.

Do not supply power to the unit or operate it until all tubing and wiring to the outside unit are completed.

Indoor unit

Push

Fig. 42

Slant

Drain hose

Insulation material (Locally purchased) must be used.

Fig. 43

Condensation

Fig. 44

4. How to Install the Outdoor Unit

First refer to Section 2. Installation Site Selection.

4-1. Wiring Instructions for the Outdoor Unit

Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Make sure that the installation fully complies with all local and national regulations.

(1) Remove access panel “C”. (Fig. 46)

(2) Connect the inter-unit and power supply line accord-

ing to the drawing on the panel side.

(3) Be sure to size each wire allowing approx. 4"

(10 cm) longer than the required length for wiring. Store excess wiring inside the cabinet.

(4) When connections are completed, check that all

connections are correct as shown in the wiring system diagram on panel side.

(5) Be sure to ground the unit according to your local

codes.

Terminal block

Conduit plate

Plug

Lock nut

Inter unit (Conduit)

Cabinet

Access panel “C”

Power supply (Conduit)

Fig. 46

5. Refrigerant Tubing

Flare nut

Union

5-1. Use of the Flaring Method

Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts.

5-2. Flaring Procedure with a Flare Tool

Before

Deburring

After

(1) Cut the copper tube to the required length with a

tube cutter. It is recommended to cut approx. 12" to 20" (30 to 50 cm) longer than the tubing length you estimate.

(2) Remove burrs at the end of the copper tube with a

tube reamer or file. This process is important and should be done carefully to make a good flare. (Fig. 47)

NOTE

When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 48)

(3) Remove the flare nut from the unit and be sure to

mount it on the copper tube.

(4) Make a flare at the end of copper tube with a flare

tool.* (Figs. 49a and 49b)

(*Use “RIGID” or equivalent.)

NOTE

A good flare should have the following characteristics:

G inside surface is glossy and smooth.

G edge is smooth.

G tapered sides are of uniform length.

If the special R410A flare tool is used:

0 to 0.0196" (0 to 0.5 mm)

Fig. 47

Copper tubing

Reamer

Fig. 48

If the previous flare tool (clutch-type) is used:

0.0472" (1.2 mm)

Adjust so that the amount of tube protrusion is as shown in the figure.

Fig. 49a

Flare nut

Copper tubing

5-3. Caution before Connecting Tubes Tightly

a) Be sure to apply a sealing cap or water-proof tape

to prevent dust or water from getting into the tubes before they are used.

b) Be sure to apply refrigerant lubricant to the match-

ing surfaces of the flare and union before connecting them together. This is effective for reducing gas leaks. (Fig. 50)

c) For proper connection, align the union tube and

flare tube straight with each other, then screw in the flare nut lightly at first to obtain a smooth match. (Fig. 51)

Flare tool

Fig. 49b

Apply refrigerant lubricant here and here

Fig. 50

Fig. 51

5-4. Connecting Tubing between Indoor and

IMPORTANT

Clamp

Insulated tubes

Outdoor Units

a) Tightly connect the indoor side refrigerant tubing exten-

ded from the wall with the outdoor side tubing. (Fig. 52)

b) To fasten the flare nuts, apply specified torque as:

Torque wrench

Spanner

Indoor unit

Table 6

Tube Dia. Tightening Torque

1/4" (6.35 mm) Approx. 120 – 160 lbs·in (140 – 180 kgf· cm)

3/8" (9.52 mm) Approx. 300 – 360 lbs·in (340 – 420 kgf· cm)

1/2" (12.70 mm) Approx. 430 – 540 lbs·in (490 – 610 kgf·cm)

5/8" (15.88 mm) Approx. 590 – 710 lbs·in (680 – 820 kgf·cm)

5-5. Insulation of Refrigerant Tubing

To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material. (Fig. 53) The thickness of the insulation should be a minimum 5/16" (8 mm). (Fig. 54)

5-6. Taping the Tubes

CAUTION

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

Min. 5/16" (8 mm)

Outdoor unit

Fig. 52

Insulation

Fig. 53

Insulation

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

Fig. 54

(1) At this time, the 2 refrigerant tubes (and electrical wire

if local codes permit) should be taped together with armoring tape. The drain hose may also be included and taped together as 1 bundle with the tubing.

(2) Wrap the armoring tape from the bottom of the outdoor

unit to the top of the tubing where it enters the wall. As you wrap the tubing, overlap half of each previous tape turn. (Fig. 55)

(3) Clamp the tubing bundle to wall, using 1 clamp approx.

every 47" (120 cm).

NOTE

Do not wind the armoring tape too tightly, since this will decrease the heat insulation effect. Also, be sure the condensation drain hose splits away from the bundle and drips clear of the unit and the tubing.

5-7. Finishing the Installation

After finishing insulating and taping over the tubing, use sealing putty to seal off the hole in the wall to prevent rain and draft from entering. (Fig. 56)

Fig. 55

Apply putty here

Tubing

Fig. 56

6. Air Purging

Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. Therefore, they must be purged completely.

G pressure in the system rises

G operating current rises

G cooling (or heating) efficiency drops

G moisture in the air may freeze and block capillary tubing

G water may lead to corrosion of parts in the refrigerant

system

I Air Purging with a Vacuum Pump (for Test Run)

(1) Check that each tube (both narrow and wide tubes)

between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Note that both narrow and wide tube service valves on the outdoor unit are kept closed at this stage.

Indoor unit

Outdoor unit

(2) Using an adjustable wrench or box wrench, remove

the valve caps from the service valve on both narrow and wide tubes.

(3) Connect a vacuum pump and a manifold valve (with

pressure gauges) to the service port on the wide tube service valve. (Fig. 57)

CAUTION

The service port on the wide tube service valve uses a Schrader core valve to access the refrigerant system. The valve core is similar to those used in automobile tires. Therefore, be sure to use a vacuum hose connector which has a pushpin inside.

CAUTION

Be sure to use a manifold valve for air purging. If it is not available, use a stop valve (field supply) for this purpose. The “Hi” knob of the manifold valve must always be kept closed.

(4) With the “Lo” knob of the manifold valve open, run

the vacuum pump. The operation time for the vacuum pump varies with tubing length and the capacity of the pump. The following table shows the amount of time for evacuation:

Manifold valve (Exclusively for R410A)

Pressure gauge

Vacuum pump

HiLo

Charging hose (Exclusively for R410A)

Vacuum pump adapter (Exclusively for R410A) (with reverse flow prevention)

Fig. 57

NOTE

To prevent other refrigerants from being mistakenly charged to units which use R410A, the size of the charge port on the service valve is different from the one for other refrigerant types. For servicing such as recharging, the specified charging hose, manifold and vacuum pump adapter (with reverse flow prevention) for R410A must be used.

Table 7

Required time for evacuation when

100 liter/h vacuum pump is used

If tubing length is If tubing length is

less than 33 ft. (10 m) more than 33 ft. (10 m)

10 min. or more 15 min. or more

NOTE

The required time in Table 7 is calculated based on the assumption that the ideal (or target) vacuum condition is around 10 mmHg abs.

(5) With the vacuum pump still running, close the “Lo”

knob of the manifold valve. Then stop the vacuum pump.

(6) With the accessory hex wrench, turn the valve stem

on the narrow tube service valve counter-clockwise by 90 degrees (1/4 turn) for 10 seconds, and then turn the stem clockwise to close it again. (Fig. 58)

90° (1/4 turn)

Narrow tube

Hex wrench

Wide tube

CAUTION

Be sure to completely insert the hex wrench before attempting to turn the valve.

(7) Leak test all joints at the tubing (both indoor and out-

doors) with soapy water. Bubbles indicate a leak. Tighten the joint more when leaks, then check if there is no leak. Be sure to wipe off the soap with a clean cloth.

(8) With the hex wrench, turn the wide tube service

valve stem counter-clockwise to fully open the valve.

(9) Turn the narrow tube service valve stem counter-

clockwise to fully open the valve.

(10) Loosen the vacuum hose connected to the wide

tube service port slightly to release the pressure. Then, remove the hose.

CAUTION

This may cause the refrigerant gas to leak. In order to avoid this, take off the hose quickly.

Valve cap

Vacuum hose to manifold valve

Fig. 58

(11) Fasten the valve cap on the wide tube service port

securely with an adjustable wrench or box wrench. Next, mount the valve cap on the service valve and tighten it to 170 lbs·in (200 kgf·cm) with a torque wrench. This process is very important to prevent gas from leaking from the system.

(12) Test run the air conditioner. (See next page.)

(13) While the air conditioner is running, apply liquid

soap to check for any gas leaks around the service valves or caps.

(14) If there is no leakage, stop the air conditioner.

(15) Wipe off the soap on the tubing.

This completes air purging with a vacuum pump and the air conditioner is ready for actual operation.

How to Test Run the Air Conditioner

IMPORTANT

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. 59a)

a) Press and hold the ION button.

b) Then press and hold the 1HR TIMER button.

c) 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. 59b)

d) Release the 1HR TIMER button.

e) Release the ION button.

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

operation button of the remote controller. (Fig. 59a)

• 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. 59c)

• 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 con-

troller again to stop the test run. (Fig. 59a)

(4) Finally press the ACL (reset) button of the remote con-

troller to release it from Test Run mode to return to normal mode. (Fig. 59a)

• “ ” and “oP-1” will disappear from the remote controller display area.

ION

button

Fig. 59a

ON/OFF operation

button

1HR. TIMER

button

ACL (Reset)

button

NOTE

Troubleshooting: In the event that the green “Operation Light” is blinking upon powering up the system, an error condition exists. In this case, refer to the self-diagnostics procedure on the inside of the front cover.

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.

Fig. 59b

OPERATION lamp

TIMER lamp

QUIET lamp ION lamp

Fig. 59c

Sanyo CH1271, CH0971 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual