Sanyo XHS1271 User Manual

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Page 1

TECHNICAL & SERVICE MANUAL

XHS1271 & PNR-XS1872 + CH1271

FILE NO.

XHS1872 & PNR-XS1872 + CH1872

Destination: North America

DC INVERTER SPLIT SYSTEM AIR CONDITIONER

Indoor Model No.

Body (Panel)

XHS1271 (PNR-XS1872)

XHS1872 (PNR-XS1872)

Indoor Unit

Product Code No.

Body (Panel)

1 852 352 08 (1 852 352 11)

1 852 352 07 (1 852 352 11)

Body

Outdoor Model No.

CH1271

CH1872

Outdoor Unit

Product Code No.

1 852 330 22

1 852 330 38

Panel

XHS1271 (Body) & PNR-XS1872 (Panel) XHS1872 (Body) & PNR-XS1872 (Panel)

Wireless Remote Controller

Wired Remote Controller

(Option)

CH1271

CH1872

REFERENCE NO. SM700766

Page 2

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.

•

Install a protective leakage breaker depending on the

When Wiring

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

installation location (especially a damp or humid location). If a leakage breaker is not installed, electric shock can occur.

•

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.

Page 3

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

6. ELECTRICAL DATA

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

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6 12 16

22 26 28 30

32 34

7. MAINTENANCE

7-1. Address Setting of the Remote Control Unit 7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit 7-3. Disassembly Procedure

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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37 38 39

46 48

50 50 52 56 58

Page 4

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

59 60

61 62 63 63 64 66 67 67

APPENDIX A INSTRUCTION MANUAL

 (XHS1271 & PNR-XS1872 + CH1271 XHS1872 & PNR-XS1872 + CH1872)

APPENDIX B INSTALLATION INSTRUCTIONS

 (XHS1271 & PNR-XS1872 + CH1271 XHS1872 & PNR-XS1872 + CH1872)

APPENDIX C INSTRUCTION MANUAL

 (STK-RCS-7TWSU)

APPENDIX D INSTALLATION INSTRUCTIONS

 (STK-RCS-7TWSU)

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A-1

A-2

A-3

A-4

Page 5

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.

Page 6

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit XHS1271 & PNR-XS1872 Outdoor Unit CH1271

2-1-1.

Vertical

dB-A dB-A

Indoor : Hi/Me/Lo Outdoor : Hi

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

12.6

1,260

( 2.5 to 12.6 ) ( 250 to 1,260 )

11,900

3.5

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

Cooling

7,200 4,700

115V Single-Phase 60Hz

104 to 126

Refrigerant Tubing Connections

Operation Sound

Electrical Rating

Sensible Capacity Latent Capacity

WPower Input

V A

Available Voltage Range Running Amperes

Accessories

Narrow tube Wide tube

Refrigerant inch (mm) Tube Diameter inch (mm)

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

ft (m)Max. allowable tubing length at shipment

Flare Type

25 (7.5)

34 / 32 / 31

35 / 34 / 32

R410A / 2.43 (1,100)

Electric Expansion Valve

Washable, Anti-Mold

DC Rotary (Inverter)

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

Compressor Locked Rotor Amperes

Air Clean Filter

BTU/h

Performance

%Power Factor 87

A20

Voltage Rating

BTU/h

Total Capacity

BTU/h

SEER BTU/Wh 16

235 (400)

Air Circulation (High) ft

/min (m3/h)

4.26

13,600

4.0

( 3,000 to 13,600 ) ( 0.9 to 4.0 )

Heating

268 (455)

Moisture Removal (High) Pints/h

HSPF BTU/Wh -

COP W/W -

EER BTU/h/W 9.44

Fuse or Circuit Breaker Capacity A20

14.6

1,460

( 2.5 to 14.6 ) ( 250 to 1,460 )

8.5

2.74

Wired Remote Controller (Option) STK-RCS-7TWSU

Page 7

Indoor Unit XHS1271 & PNR-XS1872 Outdoor Unit CH1271

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Net Shipping

Shipping Volume

Dimensions & Weight (Outdoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth

Weight Ib. (kg)

Net Shipping

Shipping Volume

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.

Indoor Unit

(XHS1271 & PNR-XS1872)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm)

(625)24-19/32 (625)24-19/32

inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

(18.7)41.3

Ib. (kg)

cu.ft (m

)

Body

(XHS1271)

11-1/16 (281)

22-5/8 (575)

11-13/32 (290)

35.3 (16)

41.9 (19)

4.59 (0.13)

Outdoor Unit

(CH1271)

inch (mm) (548)21-9/16

Individual Unit

inch (mm) inch (mm) inch (mm)

inch (mm) inch (mm)

(720)28-11/32 (265)10-7/16 (600)23-5/8

(856)33-11/16 (362)14-1/4 (35.0)77.2

Ib. (kg)

cu.ft (m

)

(38.0)83.8

(0.18)6.35

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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

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

Panel

(PNR-XS1872)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

Page 8

2-1-2.

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Voltage Rating

Total Capacity

Sensible Capacity Latent Capacity

Performance

Air Circulation (High) ft Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

EER BTU/h/W 9.41 COP W/W SEER BTU/Wh 16 HSPF BTU/Wh -

Electrical Rating

Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity A20 Controls / Temperature Control Control Unit Timer

Indoor / OutdoorFan Speeds

Airflow Direction (Indoor) Horizontal

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

Features

Operation Sound

Refrigerant Tubing Connections

Refrigerant inch (mm) Tube Diameter inch (mm) Accessories Wired Remote Controller (Option) STK-RCS-7TWSU

Indoor : Hi/Me/Lo Outdoor : Hi

Narrow tube Wide tube

BTU/h

BTU/h BTU/h

/min (m3/h)

Vertical

dB-A dB-A

ft (m)Max. allowable tubing length at shipment

17,500

5.15

V A

WPower Input

1,860

%Power Factor 97

A 17.5

( 4,000 to 17,500 ) ( 1.2 to 5.15 )

341 (580)

8.3

( 1.2 to 8.3 ) ( 250 to 1,860 )

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

44 / 40 / 36

230V Single-Phase 60Hz

Cooling

10,600

6,900

4.89 187 to 253

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto

Washable, Anti-Mold

DC Twin Rotary (Inverter)

R410A / 2.87 (1,300)

Electric Expansion Valve

Flare Type

25 (7.5) 1/4 (6.35) 1/2 (12.7)

Air Clean Filter

20,400

6.0

10.5

2,340

< 230V >

Heating

( 4,400 to 20,400 ) ( 1.3 to 6.0 )

383 (650)

( 1.3 to 10.5 ) ( 270 to 2,340 )

2.56

8.5

44 / 40 / 36

Page 9

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth

Weight Ib. (kg)

Shipping Volume

Net Shipping

inch (mm)

inch (mm) inch (mm) inch (mm)

inch (mm) inch (mm)

Ib. (kg)

cu.ft (m

Indoor Unit

(XHS1872 & PNR-XS1872)

(313)12-5/16

(625)24-19/32 (625)24-19/32

(18.7)41.3

)

Individual Unit

Body

(XHS1872)

11-1/16 (281)

22-5/8 (575) 22-5/8 (575)

11-13/32 (290)

24-13/16 (630)

28-1/8 (714)

35.3 (16)

41.9 (19)

4.59 (0.13)

< 230V >

Panel

(PNR-XS1872)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

Dimensions & Weight (Outdoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth

Weight Ib. (kg)

Net Shipping

Shipping Volume

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.

Outdoor Unit

(CH1872)

inch (mm) (670)26-3/8

inch (mm) inch (mm) inch (mm)

inch (mm) inch (mm)

Ib. (kg)

cu.ft (m

)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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

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

(880)34-21/32 (285)11-7/32 (740)29-1/8

(1,012)39-27/32 (380)14-31/32 (44.0)97.0 (48.0)105.8

(0.28)9.88

Page 10

2-1-3.

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Voltage Rating

Total Capacity

Sensible Capacity Latent Capacity

Performance

Air Circulation (High) ft Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

EER BTU/h/W 9.41 COP W/W SEER BTU/Wh 16 HSPF BTU/Wh -

Electrical Rating

Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity A20 Controls / Temperature Control Control Unit Timer

Indoor / OutdoorFan Speeds

Airflow Direction (Indoor) Horizontal

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

Features

Operation Sound

Refrigerant Tubing Connections

Refrigerant inch (mm) Tube Diameter inch (mm) Accessories Wired Remote Controller (Option) STK-RCS-7TWSU

Indoor : Hi/Me/Lo Outdoor : Hi

Narrow tube Wide tube

BTU/h

BTU/h BTU/h

/min (m3/h)

Vertical

dB-A dB-A

ft (m)Max. allowable tubing length at shipment

17,500

5.15

V A

WPower Input

1,860

%Power Factor 98

A 17.5

( 4,000 to 17,500 ) ( 1.2 to 5.15 )

341 (580)

9.1

( 1.2 to 9.1 ) ( 250 to 1,860 )

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

44 / 40 / 36

208V Single-Phase 60Hz

Cooling

10,600

6,900

4.89 187 to 253

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto

Washable, Anti-Mold

DC Twin Rotary (Inverter)

R410A / 2.87 (1,300)

Electric Expansion Valve

Flare Type

25 (7.5) 1/4 (6.35) 1/2 (12.7)

Air Clean Filter

20,400

6.0

11.5

2,340

< 208V >

Heating

( 4,400 to 20,400 ) ( 1.3 to 6.0 )

383 (650)

( 1.3 to 11.5 ) ( 270 to 2,340 )

2.56

8.5

44 / 40 / 36

Page 11

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth

Weight Ib. (kg)

Shipping Volume

Net Shipping

inch (mm)

inch (mm) inch (mm) inch (mm)

inch (mm) inch (mm)

Ib. (kg)

cu.ft (m

Indoor Unit

(XHS1872 & PNR-XS1872)

(313)12-5/16

(625)24-19/32 (625)24-19/32

(18.7)41.3

)

Individual Unit

Body

(XHS1872)

11-1/16 (281)

22-5/8 (575) 22-5/8 (575)

11-13/32 (290)

24-13/16 (630)

28-1/8 (714)

35.3 (16)

41.9 (19)

4.59 (0.13)

< 208V >

Panel

(PNR-XS1872)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

Dimensions & Weight (Outdoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth

Weight Ib. (kg)

Net Shipping

Shipping Volume

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.

Outdoor Unit

(CH1872)

inch (mm) (670)26-3/8

inch (mm) inch (mm) inch (mm)

inch (mm) inch (mm)

Ib. (kg)

cu.ft (m

)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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

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

(880)34-21/32 (285)11-7/32 (740)29-1/8

(1,012)39-27/32 (380)14-31/32 (44.0)97.0 (48.0)105.8

(0.28)9.88

Page 12

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit (Body) XHS1271

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-XHS1271

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)

Rating Voltage / Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor Micro F

Drain Pump

Model ... Q'ty

Rating Voltage, Hz

Input

(Ambient Temp. 68 °F (20 °C))

Safty Device

Type Open

inch (mm)

Ohm

VAC

Ohm

°F (°C)

RCS-7MHVPSW4U

Turbo

1 ... D12-5/8 / L5-3/4 (D322/L147)

DC Motor

SIC-72FV-B623-1 ... 1

470 / 520

DC160V / 23W

Internal Controller

Yes Yes

PLD-12115ST-1 ... 1

AC115V, 60Hz

10.8

101 +/- 10%Coil Resistance

Thermal Fuse

293 (145)

Heat Exchanger Coil

Coil

Rows Fins per inch

(m2)

Aluminum Plate Fin / Copper Tube

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit (Panel) PNR-XS1872

Flap Motor

Type Stepping Motor

Model ... Q'ty

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

Each Pair of Terminal : 380 +/- 7%

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

MPZN-12V ... 2

18.1

2.94 (0.273) Face Area

DC 12V

Page 13

Indoor Unit (Body) XHS1872

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-XHS1872

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)

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor Micro F

Drain Pump

Model ... Q'ty

Rating Voltage, Hz

Input

(Ambient Temp. 68 °F (20 °C))

Safty Device

Type Open

inch (mm)

Ohm

VAC

Ohm

°F (°C)

RCS-7MHVPSW4U

Turbo

1 ... D12-5/8 / L5-3/4 (D322/L147)

DC Motor

SIC-72FV-D866-1B ... 1

650 / 720

DC340V / 20WRating Voltage / Nominal Output

Thermal Fuse

Yes Yes

PLD-12230ST-1 ... 1

AC208 to 240V, 60Hz

10.8

333 +/- 10%Coil Resistance

Thermal Fuse

293 (145)

Heat Exchanger Coil

Coil

Aluminum Plate Fin / Copper Tube

Rows Fins per inch

(m2)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit (Panel) PNR-XS1872

Flap Motor

Type Stepping Motor

Model ... Q'ty

MP24ZN-12V ... 2 Rating Coil Resistance Ohm

Each Pair of Terminal : 380 +/- 7%

(Ambient Temp. 77 °F (25 °C))

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

18.1

2.94 (0.273) Face Area

DC 12V

Page 14

2-2-2. Outdoor Unit

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 (Hermetic)

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.

Page 15

Outdoor Unit CH1872

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-CH1872

Microprocessor

250V 25A

DC Twin Rotary (Hermetic)

C-6RVN93H0M / 1,050W

FV50S ... 0.74 (350)

R - S :

0.482

S - T :

0.482

T - R :

0.482

Yes Yes Yes

CS-7L115

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

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 ... D16-17/32 (D420)

DC Motor

DAJ12-55J71A-CU ... 1

820 / 850

RED - WHT :

WHT - BLU :

BLU - RED :

77.5

Internal Controller

Yes

Aluminum Plate Fin / Copper Tube

21.2

5.49 (0.510)

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Page 16

2-3. Other Component Specifications

Indoor Unit XHS1271 & PNR-XS1872  XHS1872 & PNR-XS1872 Outdoor Unit CH1271

 CH1872

• Indoor air temp sensor

(Model:KTEC-35-S98)

• Indoor heat exchanger sensor

(Model:PT2M-51H-S3)

• Compressor temp sensor

(CH1271 (CH1872

...

Model:DTN-TKS274Y TH2)

...

Model:DTN-TKS293B)

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

(CH1271 (CH1872

...

Model:DTN-TKS269B)

...

Model:TKS295B)

• Outdoor heat exchanger sensor

(CH1271 (CH1872

...

Model:DTN-TKS274Y TH1)

...

Model:TKS292B)

Resistance (k ohm)

4514 23 32 41 50 59 68

(

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

Temperature °F (°C)

Page 17

3. DIMENSIONAL DATA

Indoor Unit  XHS1271 & PNR-XS1872  XHS1872 & PNR-XS1872

7-11/16

4-29/32

A View

1-3/16

21/32

3-1/8

(534)

23-5/8 (600)

21-1/32

Suspension bolt pitch

Ceiling opening dimensions

Center of

panel

(flared)

1/4" (flared)

dia.

dia. 1/2"

23-5/8 (600)

21-1/32 (534)

Ceiling opening dimensions

Suspension bolt pitch

12-7/16

12-7/8

22-5/8 (575)

6-5/16 6-11/16

2-3/32

1-25/32

1-3/16 (30)

11-5/32 (283)

8-15/32

1-25/32

4-19/32

Less than 31/32 Less than 31/32

The length of the suspension

14-3/32 (358)

24-19/32 (625)

25/32

bolts should be selected so that

there is a gap of 1-3/16" or

the ceiling (21/32" or more

below the lower surface of the

main unit), as shown in the

figure at right. If the suspension

bolts is too long, it will contact

the ceiling panel and the unit

cannot be installed.

24-19/32 (625)

13-5/32 (334)

5-9/16

2-3/4 1-9/32

(liquid tube)

Air intake

Discharge outlet

Refrigerant tubing

(gas tube)

22-5/8 (575)

Refrigerant tubing

Drain tube connection port VP20 (outer dia. 1")

Power supply port

Suspension bolt hole (4 - 1/2" x 1-1/8" hole)

Fresh air intake duct connection port (dia. 3-7/8")

2-3/32

3-5/8

7-23/32

1-27/32 1-3/32

Unit : inch (mm)

Page 18

Outdoor Unit 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) (852-0-0010-12700-0)

Page 19

Outdoor Unit CH1872

23-15/16 5-11/32

1-3/8

11-17/32

ID:23/32

34-21/32(880)

4-ID:15/16

15/32

2-17/32

12-7/32

11-7/32(285)

13-5/32

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

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

1-13/16

23/32

2-13/32

26-3/8(670)

6-17/32

4-3/8 2-5/32

3/32

5-23/32

Unit : inch (mm) (852-0-0010-13200-0)

Page 20

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit XHS1271 & PNR-XS1872 Outdoor Unit CH1271

Indoor unit Outdoor unit

Heat exchanger

Strainer

Wide tube

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

Narrow tube

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

Wide tube service valve

Muffler

Narrow tube service valve

Strainer

4-way valve

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

Page 21

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Indoor unit Outdoor unit

Heat exchanger

Strainer

Wide tube

O.D.

1/2"

(12.7mm)

Narrow tube

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

Wide tube service valve

Muffler

Narrow tube service valve

Strainer

4-way valve

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

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

Page 22

5. PERFORMANCE DATA

5-1. Temperature Charts

Indoor Unit XHS1271 & PNR-XS1872 Outdoor Unit CH1271

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

(1) Low pressure performance chart

Hi FanLo Fan

131

(0.9)

psig(MPaG)

102

(0.7)

Low pressure at wide tube service valve

(0.5)

(2) Operating current performance chart

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

F (27

80°F (27°C)

F (

°F (

(25)

(30)

Outdoor inlet air D.B. temp. °F(°C)

Hi FanLo Fan

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

(35)

F (30

°C)

80°F (27°C)

F (27

F (

°F (

F (30

104

(40)

°C)

Operating current (A)

(25)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

(3) Indoor discharge air performance chart

(20)

(15)

(10)

41 (5)

Indoor discharge air temperature °F(°C)

(0)

(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.

Hi FanLo Fan

F (30

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

80°F (27°C)

(30)

F (27

F (

°F (

(35)

°C)

104

(40)

Page 23

Indoor Unit XHS1271 & PNR-XS1872 Outdoor Unit CH1271

Heating Characteristics (RH : 85%, Indoor fan speed : High fan) (60Hz, 115V)

(1) High pressure performance chart

(2) Operating current performance chart

508

(3.5)

°C)

435

(3.0)

psig(MPaG)

Indoor Air Temp.73

363

(2.5)

290

(2.0)

218

High pressure at wide tube service valve

(1.5)

(

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

°F (

°C)

°F (

°C)

°F (

Outdoor inlet air D.B. temp. °F(°C)

°C)

°F (

°C)

Indoor Air Temp.73

Operating current (A)

°F (

°C)

F (

°F (

(

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

131 (55)

122 (50)

113

Indoor Air Temp.73

(45) 104

(40)

(35)

(30)

(25)

Indoor discharge air temperature °F(°C)

(20)

(

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

F (21

°F (

F (

°F (

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 (

°F (

Page 24

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)

(1) Low pressure performance chart

Hi FanLo Fan

131

(0.9)

psig(MPaG)

102

(0.7)

Low pressure at wide tube service valve

(0.5)

(2) Operating current performance chart

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C

(25)

(30)

Outdoor inlet air D.B. temp. °F(°C)

Hi FanLo Fan

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

F (27

80°F (27°C)

F (

°F (

(35)

°C)

F (30

F (27

80°F (27°C)

F (

°F (

)

104

(40)

°C)

Operating current (A)

(25)

(30)

(35)

104

(40)

Outdoor inlet air D.B. temp. °F(°C)

(3) Indoor discharge air performance chart

(20)

(15)

(10)

41 (5)

Indoor discharge air temperature °F(°C)

(0)

(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.

Hi FanLo Fan

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

F (27

80°F (27°C)

°C)

F (

°F (

(30)

(35)

F (30

104

(40)

Page 25

Indoor Unit XHS1872 & PNR-XS1872 Outdoor Unit CH1872

Heating Characteristics (RH : 85%, Indoor fan speed : High fan) (60Hz, 230V)

(1) High pressure performance chart

(2) Operating current performance chart

508

(3.5)

435

(3.0)

psig(MPaG)

363

(2.5)

290

(2.0)

218

High pressure at wide tube service valve

(1.5)

(

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

°F (

Indoor Air Temp.73

°F (

°C)

°F (

°C)

Outdoor inlet air D.B. temp. °F(°C)

°F (

°C)

F (

°F (

Indoor Air Temp.73

°C)

F (

°F (

Operating current (A)

(

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

131 (55)

122 (50)

113

Indoor Air Temp.73

(45) 104

(40)

(35)

(30)

(25)

Indoor discharge air temperature °F(°C)

(20)

(

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

F (

°F (

F (

°F (

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 (

°F (

Page 26

5-2. Cooling Capacity

RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 235 CFM

INDOOR OUTDOOR

ENT. TEMP.

F (oC) AMBIENT TEMP. oF (oC)

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

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

TC 11,940 11,720 11,460 11,220 10,440 7,840

0.80 0.93 1.06 1.16 1.25 1.07

72 (22.2) SHC 8,210 8,080 7,940 7,800 7,340 5,970

59 76 (24.4) SHC 9,040 8,900 8,760 8,620 8,170 6,800

(15.0) 80 (26.7) SHC 9,910 9,770 9,590 9,450 9,040 7,660

84 (28.9) SHC 10,730 10,590 10,410 10,270 9,860 7,840 88 (31.1) SHC 11,550 11,410 11,280 11,090 10,440 7,840

TC 12,230 12,030 11,790 11,580 10,600 7,970

CI 0.81 0.95 1.08 1.18 1.25 1.07

72 (22.2) SHC 7,020 6,930 6,800 6,660 6,160 4,920

63 76 (24.4) SHC 7,850 7,760 7,620 7,480 6,980 5,740

(17.2) 80 (26.7) SHC 8,720 8,620 8,490 8,350 7,850 6,610

84 (28.9) SHC 9,540 9,450 9,310 9,170 8,670 7,440 88 (31.1) SHC 10,360 10,270 10,130 10,000 9,490 7,970

TC 12,470 12,300 12,070 # 11,900 10,720 8,060

0.83 0.97 1.11 1.20 1.25 1.07

72 (22.2) SHC 5,840 5,740 5,610 5,520 4,970 3,820

67 76 (24.4) SHC 6,660 6,570 6,430 6,380 5,790 4,650

(19.4) 80 (26.7) SHC 7,480 7,440 7,300 7,210 6,660 5,520

84 (28.9) SHC 8,350 8,260 8,120 8,030 7,480 6,340 88 (31.1) SHC 9,170 9,080 8,940 8,900 8,300 7,160

TC 12,660 12,510 12,310 12,180 10,790 8,130

CI 0.85 0.99 1.13 1.23 1.25 1.07

72 (22.2) SHC 4,510 4,460 4,370 4,330 3,730 2,730

71 76 (24.4) SHC 5,380 5,290 5,200 5,150 4,560 3,550

(21.7) 80 (26.7) SHC 6,200 6,160 6,060 6,020 5,420 4,420

84 (28.9) SHC 7,020 6,980 6,890 6,840 6,250 5,240 88 (31.1) SHC 7,890 7,800 7,710 7,660 7,070 6,060

TC 12,750 12,640 12,470 12,390 10,800 8,150

CI 0.87 1.01 1.16 1.25 1.25 1.07

75 76 (24.4) SHC 4,100 4,050 4,010 3,960 3,370 2,500

(23.9) 80 (26.7) SHC 4,970 4,920 4,880 4,830 4,240 3,320

84 (28.9) SHC 5,790 5,740 5,700 5,650 5,060 4,140 88 (31.1) SHC 6,610 6,570 6,520 6,480 5,880 4,970

Indoor Unit : XHS1271 & PNR-XS1872

Outdoor Unit : CH1271

Power Supply : 115V Single Phase 60Hz

< Cooling Capacity >

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.

Page 27

Indoor Unit : XHS1872 & PNR-XS1872

RATING CAPACITY: 17,500 BTU/h AIR FLOW RATE: 341 CFM

INDOOR OUTDOOR

ENT. TEMP.

F (oC) AMBIENT TEMP. oF (oC)

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

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

TC 17,650 17,300 16,900 16,470 15,920 10,250

1.15 1.34 1.54 1.72 1.93 1.41

72 (22.2) SHC 12,120 11,920 11,660 11,390 11,060 8,140

59 76 (24.4) SHC 13,320 13,120 12,850 12,590 12,320 9,340

(15.0) 80 (26.7) SHC 14,580 14,380 14,110 13,850 13,510 10,250

84 (28.9) SHC 15,770 15,570 15,300 15,040 14,770 10,250 88 (31.1) SHC 16,960 16,760 16,500 16,230 15,920 10,250

TC 18,110 17,790 17,400 17,000 16,470 10,390

CI 1.17 1.37 1.57 1.75 1.97 1.41

72 (22.2) SHC 10,400 10,200 10,000 9,800 9,540 6,620

63 76 (24.4) SHC 11,590 11,390 11,190 11,000 10,730 7,810

(17.2) 80 (26.7) SHC 12,850 12,650 12,450 12,260 11,990 9,070

84 (28.9) SHC 14,040 13,850 13,650 13,450 13,180 10,270 88 (31.1) SHC 15,240 15,110 14,840 14,640 14,380 10,390

TC 18,510 18,220 17,860 # 17,500 16,990 10,500

1.19 1.40 1.60 1.79 2.01 1.41

72 (22.2) SHC 8,680 8,480 8,340 8,140 7,880 5,100

67 76 (24.4) SHC 9,870 9,740 9,540 9,340 9,140 6,290

(19.4) 80 (26.7) SHC 11,130 10,930 10,800 10,600 10,400 7,550

84 (28.9) SHC 12,320 12,190 11,990 11,790 11,590 8,740 88 (31.1) SHC 13,510 13,380 13,180 12,980 12,790 9,930

TC 18,820 18,570 18,260 17,940 17,460 10,560

CI 1.22 1.43 1.64 1.83 2.06 1.41

72 (22.2) SHC 6,750 6,690 6,550 6,420 6,160 3,500

71 76 (24.4) SHC 7,950 7,880 7,750 7,610 7,420 4,700

(21.7) 80 (26.7) SHC 9,210 9,140 9,010 8,870 8,680 5,960

84 (28.9) SHC 10,470 10,330 10,200 10,070 9,870 7,150 88 (31.1) SHC 11,660 11,530 11,390 11,260 11,060 8,340

TC 19,010 18,800 18,530 18,260 17,660 10,570

CI 1.25 1.46 1.68 1.87 2.09 1.41

75 76 (24.4) SHC 6,160 6,090 5,960 5,890 5,630 3,170

(23.9) 80 (26.7) SHC 7,420 7,350 7,220 7,150 6,890 4,430

84 (28.9) SHC 8,610 8,540 8,410 8,340 8,080 5,630 88 (31.1) SHC 9,800 9,740 9,670 9,540 9,340 6,820

Outdoor Unit : CH1872

Power Supply : 230V Single Phase 60Hz

< Cooling Capacity >

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.

Page 28

5-3. Cooling Capacity (Low Ambient)

RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 235 CFM

INDOOR OUTDOOR

ENT. TEMP.

F (oC) AMBIENT TEMP. oF (oC)

W.B. D.B. 0 5 15 25 35 45 55

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

TC 9,520 9,540 9,550 9,570 9,590 9,580 9,570

0.48 0.51 0.48 0.46 0.47 0.52 0.56

72 (22.2) SHC 6,840 6,840 6,840 6,840 6,890 6,890 6,840

59 76 (24.4) SHC 7,660 7,660 7,660 7,710 7,710 7,710 7,710

(15.0) 80 (26.7) SHC 8,530 8,530 8,530 8,530 8,580 8,530 8,530

84 (28.9) SHC 9,360 9,360 9,360 9,360 9,400 9,360 9,360 88 (31.1) SHC 9,520 9,540 9,550 9,570 9,590 9,580 9,570

TC 9,390 9,420 9,480 9,540 9,600 9,620 9,640

CI 0.54 0.57 0.52 0.50 0.50 0.54 0.58

72 (22.2) SHC 5,560 5,610 5,610 5,650 5,650 5,700 5,700

63 76 (24.4) SHC 6,380 6,430 6,430 6,480 6,520 6,520 6,520

(17.2) 80 (26.7) SHC 7,250 7,250 7,300 7,340 7,340 7,390 7,390

84 (28.9) SHC 8,080 8,080 8,120 8,170 8,170 8,210 8,210 88 (31.1) SHC 8,900 8,940 8,940 8,990 8,990 9,040 9,040

TC 9,170 9,210 9,330 9,440 9,540 9,600 9,660

CI 0.61 0.64 0.58 0.54 0.53 0.57 0.60

72 (22.2) SHC 4,280 4,330 4,370 4,420 4,460 4,510 4,510

67 76 (24.4) SHC 5,150 5,150 5,200 5,240 5,290 5,330 5,330

(19.4) 80 (26.7) SHC 5,970 6,020 6,060 6,110 6,160 6,160 6,200

84 (28.9) SHC 6,800 6,840 6,890 6,930 6,980 6,980 7,020 88 (31.1) SHC 7,620 7,660 7,710 7,760 7,800 7,850 7,850

TC 8,840 8,900 9,090 9,250 9,400 9,500 9,610

CI 0.69 0.71 0.64 0.59 0.57 0.60 0.62

72 (22.2) SHC 3,000 3,000 3,090 3,140 3,180 3,230 3,280

71 76 (24.4) SHC 3,820 3,820 3,920 3,960 4,010 4,050 4,100

(21.7) 80 (26.7) SHC 4,690 4,690 4,780 4,830 4,880 4,920 4,970

84 (28.9) SHC 5,520 5,520 5,610 5,650 5,700 5,740 5,790 88 (31.1) SHC 6,340 6,340 6,430 6,480 6,520 6,570 6,610

TC 8,430 8,510 8,770 9,000 9,200 9,340 9,490

CI 0.76 0.79 0.70 0.64 0.61 0.63 0.65

75 76 (24.4) SHC 2,590 2,590 2,680 2,770 2,820 2,860 2,910

(23.9) 80 (26.7) SHC 3,410 3,460 3,550 3,640 3,690 3,730 3,780

84 (28.9) SHC 4,240 4,280 4,370 4,460 4,510 4,560 4,600 88 (31.1) SHC 5,060 5,100 5,200 5,290 5,330 5,380 5,420

Indoor Unit : XHS1271 & PNR-XS1872

Outdoor Unit : CH1271

Power Supply : 115V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

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

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.

Page 29

Indoor Unit : XHS1872 & PNR-XS1872

RATING CAPACITY: 17,500 BTU/h AIR FLOW RATE: 341 CFM

INDOOR OUTDOOR

ENT. TEMP.

F (oC) AMBIENT TEMP. oF (oC)

W.B. D.B. 0 5 15 25 35 45 55

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

TC 14,930 14,970 14,980 14,970 15,000 15,040 15,030

0.87 0.91 0.94 0.81 0.79 0.78 0.82

72 (22.2) SHC 10,530 10,530 10,600 10,530 10,600 10,600 10,600

59 76 (24.4) SHC 11,720 11,790 11,790 11,790 11,790 11,790 11,790

(15.0) 80 (26.7) SHC 12,980 12,980 12,980 12,980 13,050 13,050 13,050

84 (28.9) SHC 14,180 14,180 14,240 14,180 14,240 14,240 14,240 88 (31.1) SHC 14,930 14,970 14,980 14,970 15,000 15,040 15,030

TC 14,710 14,770 14,840 14,940 15,030 15,130 15,180

CI 0.98 1.02 1.03 0.87 0.85 0.82 0.85

72 (22.2) SHC 8,610 8,680 8,680 8,740 8,810 8,810 8,870

63 76 (24.4) SHC 9,800 9,870 9,870 9,930 10,000 10,070 10,070

(17.2) 80 (26.7) SHC 11,060 11,130 11,130 11,190 11,260 11,260 11,330

84 (28.9) SHC 12,260 12,320 12,320 12,390 12,450 12,450 12,520 88 (31.1) SHC 13,450 13,510 13,510 13,580 13,650 13,710 13,710

TC 14,330 14,410 14,560 14,780 14,960 15,130 15,250

1.11 1.14 1.14 0.95 0.91 0.86 0.88

72 (22.2) SHC 6,690 6,750 6,820 6,890 6,950 7,080 7,080

67 76 (24.4) SHC 7,880 7,950 8,010 8,080 8,140 8,280 8,280

(19.4) 80 (26.7) SHC 9,140 9,210 9,270 9,340 9,400 9,540 9,540

84 (28.9) SHC 10,330 10,400 10,470 10,530 10,600 10,730 10,730 88 (31.1) SHC 11,530 11,590 11,660 11,720 11,860 11,920 11,990

TC 13,770 13,880 14,110 14,480 14,750 15,010 15,200

CI 1.25 1.28 1.27 1.04 0.97 0.91 0.91

72 (22.2) SHC 4,700 4,760 4,830 4,960 5,100 5,160 5,230

71 76 (24.4) SHC 5,890 5,960 6,020 6,160 6,290 6,360 6,490

(21.7) 80 (26.7) SHC 7,150 7,220 7,280 7,420 7,550 7,610 7,680

84 (28.9) SHC 8,340 8,410 8,480 8,610 8,740 8,810 8,940 88 (31.1) SHC 9,540 9,600 9,670 9,800 9,930 10,000 10,130

TC 13,080 13,210 13,540 14,070 14,440 14,790 15,060

CI 1.38 1.42 1.39 1.13 1.04 0.96 0.95

75 76 (24.4) SHC 4,030 4,030 4,170 4,370 4,500 4,630 4,700

(23.9) 80 (26.7) SHC 5,290 5,290 5,430 5,630 5,760 5,890 5,960

84 (28.9) SHC 6,490 6,490 6,620 6,820 6,950 7,080 7,150 88 (31.1) SHC 7,680 7,680 7,810 8,010 8,140 8,280 8,340

Outdoor Unit : CH1872

Power Supply : 230V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

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.

Page 30

5-4. Heating Capacity

RATING CAPACITY: 13,600 BTU/h AIR FLOW RATE: 268 CFM

OUTDOOR INDOOR

ENT. TEMP.

F (oC) AMBIENT TEMP. oF (oC)

W.B. 60 65 70 75 80

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

0 (-17.8) TH 7,510 7,540 7,560 7,580 7,590

0.84 0.88 0.92 0.96 1.00

3 (-16.1) TH 7,760 7,790 7,810 7,830 7,840

CI 0.86 0.90 0.94 0.98 1.02

8 (-13.3) TH 8,350 8,380 8,410 8,420 8,440

0.89 0.94 0.98 1.03 1.07

13 (-10.6) TH 8,980 9,000 9,030 9,050 9,060

CI 0.93 0.98 1.03 1.08 1.12

18 (-7.8) TH 9,660 9,690 9,720 9,730 9,750

0.98 1.03 1.08 1.13 1.18

23 (-5.0) TH 10,390 10,420 10,440 10,460 10,470

CI 1.03 1.08 1.14 1.19 1.25

28 (-2.2) TH 11,150 11,180 11,200 11,210 11,220

CI 1.08 1.14 1.20 1.26 1.32

33 (0.6) TH 11,930 11,960 11,980 12,000 12,000

1.13 1.20 1.26 1.33 1.39

38 (3.3) TH 12,720 12,750 12,770 12,780 12,550

CI 1.19 1.26 1.33 1.40 1.44

43 (6.1) TH 13,560 13,580 # 13,600 13,300 12,670

CI 1.25 1.32 1.40 1.44 1.44

48 (8.9) TH 14,420 14,440 14,120 13,400 12,760

1.31 1.39 1.44 1.44 1.44

53 (11.7) TH 15,290 15,020 14,200 13,470 12,810

1.44 1.44 1.44 1.44 1.44

58 (14.4) TH 15,990 15,080 14,240 13,490 12,810

CI 1.44 1.44 1.44 1.44 1.44

63 (17.2) TH 16,000 15,070 14,220 13,460 12,770

CI 1.44 1.44 1.44 1.44 1.44

65 (18.3) TH 15,980 15,050 14,190 13,430 12,740

1.44 1.44 1.44 1.44 1.44

Indoor Unit : XHS1271 & PNR-XS1872

Outdoor Unit : CH1271

Power Supply : 115V Single Phase 60Hz

< Heating Capacity >

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.

TH : Total Heating Capacity (BTU/h)

: 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.

Page 31

Indoor Unit : XHS1872 & PNR-XS1872

RATING CAPACITY: 20,400 BTU/h AIR FLOW RATE: 383 CFM

OUTDOOR INDOOR

ENT. TEMP.

F (oC) AMBIENT TEMP. oF (oC)

W.B. 60 65 70 75 80

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

0 (-17.8) TH 11,350 11,400 11,440 11,480 11,510

1.35 1.41 1.47 1.53 1.59

3 (-16.1) TH 11,720 11,770 11,820 11,850 11,890

CI 1.37 1.44 1.50 1.56 1.62

8 (-13.3) TH 12,600 12,650 12,700 12,750 12,780

1.43 1.50 1.57 1.64 1.71

13 (-10.6) TH 13,520 13,580 13,630 13,670 13,710

CI 1.50 1.57 1.65 1.72 1.80

18 (-7.8) TH 14,540 14,600 14,650 14,700 14,730

1.57 1.65 1.74 1.82 1.90

23 (-5.0) TH 15,610 15,670 15,730 15,770 15,810

CI 1.65 1.74 1.83 1.92 2.00

28 (-2.2) TH 16,730 16,800 16,850 16,890 16,930

CI 1.74 1.83 1.93 2.02 2.12

33 (0.6) TH 17,900 17,960 18,010 18,060 18,090

CI 1.83 1.93 2.04 2.14 2.24

38 (3.3) TH 19,050 19,120 19,170 19,210 19,240

1.92 2.03 2.14 2.25 2.36

43 (6.1) TH 20,290 20,350 # 20,400 20,440 20,460

CI 2.02 2.14 2.26 2.38 2.50

48 (8.9) TH 21,550 21,610 21,650 21,690 21,700

CI 2.13 2.26 2.39 2.52 2.64

53 (11.7) TH 22,830 22,890 22,930 22,950 22,960

CI 2.39 2.53 2.53 2.66 2.80

58 (14.4) TH 24,080 24,130 24,170 24,180 24,190

CI 2.37 2.52 2.67 2.81 2.96

63 (17.2) TH 25,390 25,430 25,450 25,460 25,460

CI 2.51 2.67 2.82 2.98 3.13

65 (18.3) TH 25,900 25,940 25,960 25,970 25,950

CI 2.57 2.73 2.89 3.05 3.21

Outdoor Unit : CH1872

Power Supply : 230V Single Phase 60Hz

< Heating Capacity >

NOTE

Rating conditions (#)

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

TH : Total Heating Capacity (BTU/h)

: 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.

Page 32

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor UnitXHS1271 & PNR-XS1872 Outdoor Unit

Cooling

Performance at 115V Single-phase 60Hz Rating conditions Running amp. A 0.21

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 0.25

 CH1271

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor

Power input W18

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor

Power input W20

12.39 1,242

14.35 1,440

12.6

1,260

14.6

1,460

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.

Page 33

Indoor UnitXHS1872 & PNR-XS1872

CH1872

Outdoor Unit

(1) Voltage:230V



Cooling

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.15

Power input W

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.

8.15

1,838

Heating

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. 0.19

Power input 27

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.

10.31 2,313

(2) Voltage:208V

230V

Complete Unit

8.3

1,860

Complete Unit

10.5

2,340

Cooling

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.16

Power input 22

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.

8.94

1,838

Heating

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.2

Power input 27

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.

11.3

2,313

208V

Complete Unit

9.1

1,860

Complete Unit

11.5

2,340

Page 34

6-2. Electric Wiring Diagrams

Indoor Unit XHS1271 & PNR-XS1872  XHS1872 & PNR-XS1872

WARNING

THERMISTOR

FLAP (R)

FLAP (W)

IND LAMP ASSY

ORG BLU BRN

WHT BLK

WHT BRN BLU

ORG BLK

VLT

BLU PNK YEL

ORG RED BRN

GRN BLK

WHT

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

COIL-1

BLK

COIL-1

WHT BRN BLU

ORG

BLK

2P (RED)

ROOM

2P (YEL)

3P (RED)

FLAP

5P (WHT)

IND

7P (WHT)

4P (WHT)

8FA2-5250-46900-2

ROOM

FLOAT SWITCH

6 5 4 3 2 1

BLK BLK

6 5 4 3 2 1

SERIAL

2P (WHT)

1 1

2 2

VLT

YEL

BLU

PNK

BRN

RED

ORG

GRN/YEL

YEL/(RED)

CORE

FERRITE

YEL/(RED)

BLU YEL

WHT

BLK

RED

WHT

BLK

DRAIN PUMP

TERMINAL BASE

2 3

TO OUTDOOR UNIT

FAN MOTOR

GND

RED

GRN

WHT

1 1

2 2

PWM/POW 7P (RED) PWM/POW 7P (RED) RC

SERIAL

2P (WHT)

3P (BLU)

3P (RED)

BOX BOX

CONTROLLER CONTROLLER

DCM

6P (BLU)

6P (WHT)

1 2 3 4 5 6

AC1 AC2 SI

Page 35

Outdoor Unit CH1271

1P-CONNECTOR (WHT

WHT

CRANKCASE

HEATER

REACTANCE

)

1 1

)

WHT

W W W W

C-HEATER1C-HEATER2

YEL

112

YEL

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

OUT DOOR

(OLR)

OUTDOOR

1 2 1 2

BLK

THERMISTOR

COIL/COMP

1 2 3 4 1 2 3 4

YEL

COIL

THERMISTOR

BLK

THERMISTOR

COMPRESSOR

GRN/YEL

DCFM

1 2 3 4 5 6 7

BLK

RED

WHT

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

BLK

RED

WHT

FAN MOTOR

WHT WHT

1 2 3 45566 1 2 3 4

YEL

BLU

RED

ORG

1 2 3 45566 1 2 3 4

YEL

7P-CONNECTOR (WHT)

MAGNETIC COIL

2P-CONNECTOR (BLK)

GRY

WHT

1 1

2 2

YEL

1 3

BLK

4WAY VALVE

COIL

BLK

WHT WHT

WHT

1 1 2 2

2P-CONNECTOR (WHT)

POWER

GND

SUPPLY

HIGH PRESSURE

SWITCH

BLK BLK

8FA2-5257-69100-3

Page 36

Outdoor Unit CH1872

RED (PNK)

WHT

BLU

321

CONNECTOR (WHT)

1 2 3

CORE

FERRITE

BLU

RED

WHT

(PNK)

RST

COMPRESSOR

MOTOR

OVERLOAD RELAY

COMP

1 2 1 2

BLK

THERMISTOR

COMPRESSOR

(OLR)

REACTANCE

WHT

)

112

WHT

(

2P-CONNECTOR

WHT

L1WL2WHIC

A-TH

1 2 3 4 1 2 3 4

BLK

OUT DOOR

THERMISTOR

BRN

HIC

COIL/OUTDOOR

1 2 3 4 1 2 3 4

YEL

COIL

THERMISTOR

WARNING

BLK

WHT

GRN/YEL

HIC

AC2WAC2

CONTROLLER

DCFM

1 2 3 4 5 6 7

BLK

RED

WHT

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

BLK

RED

WHT

7P-CONNECTOR (WHT)

FAN MOTOR

WHT WHT

BLU

RED

WA1W

MV0 RV0 RV1

1 2

1 2 3 4

YEL

BLU

RED

ORG

1 2 3 455

1 2 3 4

YEL

MVO

MAGNETIC COIL

2P-CONNECTOR (RED)

To avoid electrical shock hazard, be sure to

disconnect power before checking, servicing

and/or cleaning any electrical parts.

BLK

POWER RELAY

3 455

GRY

25A

WHT

1 1 2 2

YEL

GRN/YEL

ACIN1

ACIN2

SI-A

W W

BLK

1 2 1 2

RED

4WAY VALVE

COIL

WHT WHT

FERRITE

CORE

BLK

WHT

RED

WHT

1 1 2 2

2P-CONNECTOR (WHT)

2P-CONNECTOR (BLK)

BLK

WHT

HIGH PRESSURE

BLK BLK

TERMINAL

PLATE

GND

POWER

GND

SUPPLY

SWITCH

TO INDOOR UNIT

8FA2-5257-64000-2

Page 37

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 HIGH

POWER 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 HIGH POWER 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)

Test run mode

Self-diagnostic mode

Address setting mode

HIGH POWER button

Ta b

Fig. 13

ACL button

Fig. 14

ON/OFF operation button

1HR. TIMER button

(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.

ACL (Reset) button

Fig. 15

Page 38

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.

Page 39

7-3. Disassembly Procedure

To avoid electrical shock hazard, be sure to disconnect power before

WARNING

7-3-1. Remove the air intake grill.

(1) Slide the 2 latches each to the corresponding arrow direction. (Fig. 1 and Fig. 2)

 Open downward the air intake grill located on the latch side.

(2) Undo the air intake grill drop preventive hook. (Fig. 3)

 Undo the 2 hinges for the grill and remove the air intake grill.

attempting to disassemble the unit.

When a footstool, etc. is used for disassembling the indoor unit,

be careful not to fall down. If you fall down, you might be injured seriously.

Latch

Hinge

Latch

Air intake grill

Fig.1

Hinge

Fig.2 Fig.3

7-3-2. Disconnect the connectors in the control box.

(1) Remove the 2 screws and remove the control box cover. (Fig. 4)

(2) Disconnect the connectors CN04 (FLAP 5P), CN12 (RC 4P) and CN13 (IND 7P). (Fig. 5)

Hook

CN04

Control PCboard

Screw Control box cover

Fig.4 Fig.5

CN13

CN12

Page 40

7-3-3. Remove the ceiling panel.

(1) Open the clamp (4 locations) and remove the 2 lead wires from the clamps. (Fig. 6)

(2) Remove the 4 screws fixing the corner cover (at 3 locations) and indicator cover (at 1 location). (Fig. 6)

(3) Press the center 1 of the cover and remove the cover with the section 2 pulled down. (Fig. 7)

(4) Remove the strap (3 locations) from the hook on the ceiling panel. (Fig. 8)

NOTE

(5) Remove the bolt (4 locations) with a washer and remove the ceiling panel. (Fig. 9)

There is no strap on the indicator cover.

Indicator cover

Screw

Clamp

Coner cover

Coner coverConer cover

Lead wire

Clamp

Pull down section 2.

Fig.6 Fig.7

Bolt

Cover

Center 1

Strap

Remove the strap from the hook.

Bolt

Fig.8 Fig.9

Page 41

7-3-4. Remove the indoor air temperature sensor.

(1) Disconnect the connector CN08 (ROOM 2P) in the control box and remove the indoor air temperature

sensor. (Fig. 10)

Indoor air temperature sensor

Fig.10

7-3-5. Remove the power box and control box.

(1) Remove a screw and remove the terminal cover. (Fig. 11)

(2) Remove the 2 screws and remove the power box cover. (Fig. 11)

(3) Disconnect the power lines (No. 1 and No. 2) / signal line (No. 3) and ground cable from the terminals in

the power box. (Fig. 12)

CN08

Terminal cover

Screw

Power box cover

Ground cable

Fig.11

Terminal

Fig.12

Power lines / Signal line

Page 42

(4) Disconnect the connector CN07 (DP 2P) in the power box. (Fig. 13)

 Remove a screw and disconnect the ground cable. (Fig. 13)

(5) Disconnect the connector CN03 (DCM 6P) in the power box. (Fig. 14)

(6) Remove the 4 screws and remove the power box. (Fig. 14)

(7) Disconnect the connectors CN06 (FS 3P) and CN09 (COIL-1 2P) in the control box. (Fig. 15)

(8) Remove the 2 screws and remove the control box. (Fig. 15)

Screw

Ground cable

Screw

12 3

CN07

Fig.13

Screw

CN03

Fig.14

Screw

CN09

Screw

CN06

Fig.15

Page 43

NOTE

For the removal of the following components, perform any work after removing the indoor

unit (main body) from the ceiling.

Main body lower section Heat exchanger sensor Drain pump

Float switch Turbo fan Fan motor

Heat exchanger

1.  Perform the work after draining the water to prevent the water leakage from the drain pan.

• Put a bucket, etc., under the drain cap and remove the drain cap to drain the water. 

 (Fig. 16)

2.  Refer to the installation instructions for recovery of refrigerant or removal of the power

 cable or tubing.

7-3-6. Remove the main body lower section.

(1)  Remove the 4 screws. (Fig. 16)

(2)  Remove the 2 screws. (Fig. 17)

(3)  Disconnect the connector CN03 (DCM 6P) in the power box. (Fig. 18)

(4)  Lift the main body lower section and remove it from the main body upper section.

Screw

Drain cap

Main body lower sectionMain body lower section

Screw

Fig.16

Main body lower section

Main body upper section

Screw

CN03

Fig.18Fig.17

Page 44

7-3-7. Remove the heat exchanger sensor.

(1)  Remove the heat exchanger sensor from the sensor holder. (Fig. 19)

Fig.19

7-3-8. Remove the drain pump and float switch.

(1) Remove the 2 screws (Fig. 20)

(2) Loosen the clamp and disconnect the drain hose from the drain pump. (Fig. 20)

(3) Remove the drain pump from the main body upper section. (Fig. 20)

(4) Remove a nut and remove the float switch. (Fig. 21)

Heat exchanger sensor

Holder

Drain pump

Screw

Float switch

Nut

Drain hose

Clamp

Fig.20 Fig.21

Page 45

7-3-9. Remove the turbo fan and fan motor.

(1) Remove a nut and remove the turbo fan. (Fig. 22)

(2) Remove the 2 screws and 3 nuts, and remove the fan motor. (Fig. 23)

Turbo fan

Fig.22 Fig.23

7-3-10. Remove the heat exchanger.

(1) Remove the 3 screws. (Fig. 24)

(2) Remove the 3 screws. (Fig. 25)

(3) Remove the heat exchanger from the main body upper section with the heat exchanger lifted.

Nut

Screw Nut

Fan motor

ScrewHeat exchanger

Screw

Fig.24 Fig.25

Main body upper section

Screw

Page 46

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.

Page 47

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

OPERATION lamp Green

TIMER lamp Green

HIGH POWER 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.

Page 48

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.

(8)

(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.

(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.

Page 49

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.

Page 50

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 HIGH POWER 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 HIGH POWER 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.

< Clock display >

Test run mode

Self-diagnostics mode

ON/OFF operation button

HIGH POWER 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

Page 51

(1) Self-diagnostics Lamps

INDOOR UNIT

OPERATION button

OPERATION lamp

TIMER lamp

HIGH POWER lamp

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

OPERATION

Timer HIGH POWER

....

OFF

....

Blinking

Code Diagnostics itemsDiagnostics contents

Room temperature sensor failure

S01

Indoor heat exchanger sensor failure

S02

Compressor temperature sensor failure

S04

Outdoor heat exchanger sensor failure

S05

Outdoor air temperature sensor failure

S06

Outdoor electrical current detection

S07

failure

Indoor/outdoor communications failure

E01

(serial communications)

• HIC circuit failure

E02

• Power Tr (transistor) circuit failure

E03

E04

E05

E06

E07

E08

E09

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 (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

....

ON (Illuminated)

PCboard

failure

TIMER

LAMP

E10

E11

E12

E13

BLINKING (3 SEC. INTERVAL)

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.

FLOAT SWICTH (FS) IS ACTIVED.

(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

(1) DRAIN PUMP FAILURE (2) FS FAILURE (3) CHOKED DRAIN HOSE

Page 52

(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 3 indicator lamps on the unit. If all 3 are blinking, the current mode is "TEST run."

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

Page 53

(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 TimerOperation :Off

High Power

: Blinking

E01

: 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. )

Page 54

( 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

Page 55

(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

Page 56

9-4. Trouble Diagnosis of Fan Motor

9-4-1. Indoor Fan Motor

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

Important:

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

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

(Diagnostic procedure)

(Diagnostic results)

(Reference) DC motor connector pin arrangement

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

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

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

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

unit controller (3 locations).

Measurement location

XHS1271 (1) Vm-Gnd: Between pin 1 and pin 3 (2) Vcc-Gnd: Between pin 4 and pin 3 (3) Vs-Gnd: Between pin 5 and pin 3

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

DC 130V to 195V

Fluctuation between DC 1.8V to 5.7V

Normal value

XHS1872

DC 280V to 340V

DC 15V +/- 10%

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

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

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

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

(Remedy for symptom 3 to 5)

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

Page 57

9-4-2. Outdoor Fan Motor

This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. 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.

Page 58

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

Page 59

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

Page 60

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

Page 61

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.

Page 62

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.

Page 63

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.

Page 64

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

Page 65

(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

Page 66

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."

Page 67

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.

Page 68

APPENDIX A

INSTRUCTION MANUAL

XHS1271 & PNR-XS1872 + CH1271 XHS1872 & PNR-XS1872 + CH1872

(OI-852-6-4181-107-00-0)

A-1

Page 69

XHS1271 XHS1872

COOL/DRY/HEAT Model

This air conditioner uses the new refrigerant R410A.

INSTRUCTION MANUAL

Inverter-Controlled Split System Air Conditioner

MODE D’EMPLOI

Climatiseur de type séparé contrôlé par inverseur

Pub. OI-85264181107000

Save These Instructions! Conserver ce mode d’emploi

Page 70

FEATURES

This air conditioner is an inverter type unit that automatically adjusts capability 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

This function saves energy by controlling operation to provide a quieter operating sound than normal.

• 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”.

CONTENTS

FEATURES .........................................................................................................................................2

PRODUCT INFORMATION ................................................................................................................ 3

ALERT SYMBOLS..............................................................................................................................3

INSTALLATION LOCATION ................................................................................................................3

ELECTRICAL REQUIREMENTS........................................................................................................3

SAFETY INSTRUCTIONS..................................................................................................................3

NAMES OF PARTS.............................................................................................................................4

USING THE REMOTE CONTROL UNIT............................................................................................8

OPERATION WITH THE REMOTE CONTROL UNIT ........................................................................ 9

1. Automatic Operation............................................................................................................9

2. Manual Operation................................................................................................................ 9

3. Adjusting the Fan Speed ...................................................................................................10

4. Fan Only............................................................................................................................10

5. Night Setback Mode..........................................................................................................10

6. HIGH POWER Mode.........................................................................................................10

SPECIAL REMARKS........................................................................................................................11

SETTING THE TIMER......................................................................................................................11

USING THE 1-HOUR OFF TIMER...................................................................................................13

TIPS FOR ENERGY SAVING...........................................................................................................13

ADJUSTING THE AIRFLOW DIRECTION .......................................................................................13

OPERATION WITHOUT THE REMOTE CONTROL UNIT...............................................................14

CARE AND CLEANING....................................................................................................................14

TROUBLESHOOTING...................................................................................................................... 16

OPERATING RANGE .......................................................................................................................16

WIRED REMOTE CONTROLLER....................................................................................................16

Page

OI-107-2-EG

Page 71

PRODUCT INFORMATION

ELECTRICAL

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.

INSTALLATION LOCATION

• We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Installation Instructions provided with the unit.

• Before installation, check that the voltage of the electric supply in your home or office is the same as the voltage shown on the nameplate.

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

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

Avoid:

To protect the air conditioner from heavy corrosion, avoid installing the outdoor unit where salty sea water can splash directly onto it or in sulphurous air near a spa.

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.

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.

CAUTION

• 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-107-3-EG

Page 72

NAMES OF PARTS

UNIT DISPLAY AND OPERATION BUTTON

INDOOR UNIT

Air intakes

Air outlet (4 locations)

Remote control unit

Refrigerant tubes

OUTDOOR UNIT

Drain hose

Air outlet

NOTE

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.

INDOOR UNIT

OPERATION button OPERATION lamp

TIMER lamp HIGH POWER lamp

REMOTE CONTROL receiver

IMPORTANT

Avoid using radio equipment such as mobile phone near (within 4 ft. (1.2 m)) 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.

REMOTE CONTROL receiver

OPERATION button

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

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)

Air Intake

Air Outlet

Remote Control Unit

Refrigerant Tubes

Drain Hose

Outdoor (Condensing) Unit

Air from the room is drawn into this section and passes through air filters which remove dust.

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

The wireless remote control unit controls power ON/OFF, operation mode selection, temperature, fan speed, timer setting, and air sweeping.

The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows.

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

The outdoor unit contains the compressor, fan motor, heat exchanger coil, and other electrical components.

OPERATION lamp

TIMER lamp This lamp lights when the system is being

HIGH POWER 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.

controlled by the timer.

This lamp lights during operation in the HIGH POWER mode.

NOTE

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

OI-107-4-EG

Page 73

REMOTE CONTROL UNIT (DISPLAY)

Displayed when the time

display is set to 12-hour

time.

Symbols

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

(1) Operation mode

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

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

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

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

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

(2) Fan speed

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

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

(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................

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

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

(3) Temperature setting

60–86°F When set to 80 °F

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

OI-107-5-EG

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

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

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

Page 74

REMOTE CONTROL UNIT

Transmitter

When you press the buttons on the remote control unit, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner.

Display

Information on the operating conditions is displayed while the remote control unit is switched on. If the unit is turned off, FLAP setting and FAN SPEED setting are not displayed.

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 1step above ‘‘HIGH’’.

FAN SPEED selector button

: The air conditioner automatically decides the fan speeds. : High fan speed : Medium fan speed : Low fan speed

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

ON TIME/OFF TIME setting buttons

Advance button Return button

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”.

CANCEL button

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

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.

ADDRESS switch

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

Temperature display selector button

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

OI-107-6-EG

Page 75

Sensor

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

ON/OFF operation button

This button is for turning the air conditioner on and off.

1 HR. TIMER button (1-HOUR OFF TIMER)

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

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

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.

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.

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.

CLOCK 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 after replacing the batteries.

NOTE

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

• 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.

• 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.

(Cover closed)

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USING THE REMOTE CONTROL UNIT

HOW TO INSTALL BATTERIES

NOTE

• Initially, the S/M switch is set to S. Leave this position.

ACL button

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.

NOTE

• 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 sub-section “HOW TO INSTALL BATTERIES”.

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

• Dispose of the used batteries at the designated location in compliance with the applicable local ordinances.

HOW TO USE THE REMOTE CONTROL UNIT

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 UNIT INSTALLATION POSITION

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:

DO NOT

• In direct sunlight

• Behind a curtain or other places where it is covered

• More than 26 ft.(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

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.

Rear side

Remote control unit mount

Press

Set in place

Hole

Mounting screws

5/32 x 5/8"

(4 x 16 mm)

(included)

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

• 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.

WHEN HOLDING THE REMOTE CONTROL UNIT

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

Remote control

unit

(Transmitter head)

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Page 77

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

2. Manual Operation

STEP 4

STEP 5

NOTE

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 2

STEP 3

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.

NOTE

STEP 1 Press the MODE selector button

STEP 2 To start the air conditioner, press the ON/

STEP 3 Press the TEMP. setting buttons to change

STEP 4 Set the FAN SPEED selector button to the

STEP 5 Press the FLAP button and set the airflow

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

• 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.

and select the desired mode. For heating operation For dehumidifying operation For cooling operation For fan only operation

OFF operation button.

the temperature setting to the desired temperature. Adjustable temperature range:

30 °C max. 16 °C min.

setting you want.

direction as desired. (Refer to “ADJUSTING THE AIRFLOW DIRECTION” on page 13.)

or 86 °F max.

60 °F min.

→

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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

A. In Cooling and DRY Mode: ( and )

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

Setting temperature

2°F

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 ).

5. Night Setback Mode

STEP 2

STEP 1

Press the NIGHT SETBACK button

30 min.

Time

B. In Heating Mode: ( )

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.

30 min.

4°F

30 min.

4°F

Time

Setting temperature

Press the NIGHT SETBACK button

6. HIGH POWER Mode

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.

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 while operation. The mark appears in the display.

To cancel, press HIGH POWER button again.

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Page 79

• 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.

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.

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

SETTING THE TIMER

NOTE

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

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 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 a 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 in operation.

Cooling ( ) operation

• Sometimes the indoor unit may not get to the set fan speed such as LOW under cool operation at very low outdoor temperatures due to the indoor unit being protected from ice or frost.

Power failure during operation

• 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.

1. How to set the present time

(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.

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.

This completes the setting of the current time.

Clicking Sound

Clicking sound is heard from the air conditioner

• 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.

Remote Control Unit

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

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Page 80

2. How to set the OFF time

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

4. How to set daily ON/OFF repeat timer

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

Operation Indication

1. Press the OFF TIME setting

button once.

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 is displayed, and the present OFF time is shown.

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

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

3. How to set the ON time

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

Operation Indication

1. Press the ON TIME setting

button once.

2. Press the Advance, Return

( , ) button until AM 7:10 is displayed.

3. Wait a few seconds, and then

the setting is complete.

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

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

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

10:30 pm. Present time

7:10 am. ON

11:00 am. OFF

Operation Indication

1. Set the timer ON/OFF times

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

The present time 10:30 pm. and

are displayed.

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.

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Page 81

USING THE 1-HOUR OFF

ADJUSTING THE AIRFLOW

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

• 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.

2. Operation together with the daily ON/OFF

repeat timer

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

TIPS FOR ENERGY SAVING

Do not

• Block the air intake and outlet of the unit. If they are

obstructed, the unit 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.

• Always try to keep the air filter clean. (Refer to “CARE AND CLEANING”.) A clogged filter will impair the performance of the unit.

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

DIRECTION

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

A. Sweep function

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

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.

C. Auto flap function

The flap is set to the recommended position.

COOL

NOTE

• 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.

CAUTION

• 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.

DRY

SWEEP

HEAT FAN

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Page 82

OPERATION WITHOUT THE

CARE AND CLEANING

REMOTE CONTROL UNIT

INDOOR UNIT

OPERATION button

OPERATION lamp

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.

Cooling operation

(green)

NOTE

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)

• Cleaning and maintenance operations must be carried out by specially trained personnel. While working in high places, slipping or falling may result in serious injury.

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

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

Ceiling panel (Indoor Unit)

Clean the ceiling panel of the indoor unit with a vacuum cleaner brush, or wipe it with a clean, soft cloth.

If it is stained, use a clean cloth moistened with a mild liquid detergent. When cleaning it, be careful not to force the flaps out of place.

CAUTION

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

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

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

Cleaning the flaps

• The air outlet flap can be removed and washed with water.

• Be sure to always stop operation before removing the flap.

• After washing with water, allow it to dry, and then remount it.

CAUTION

• Do not move the flap with your hands.

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

Cleaning the main unit and remote control unit

• 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.

OI-107-14-EG

Page 83

Air filter

The air filter collects dust and other particles from the air and should be cleaned once every 6 months. If the filter gets blocked, the efficiency of the air conditioner drops greatly.

NOTE

The frequency with which the filter should be cleaned depends on the environment in which the unit is used.

How to remove the filter

Slide the two latches of the air intake grille with your thumbs in the

direction of the arrow to open the grille.

Air intake grille

How to remove the air intake grille

Open the air intake grille.

2. Detach the safety cord from the frame (remember to attach it

again after cleaning or maintenance).

3. Hold on the air intake grille and pull it towards you to detach the

two air intake grille hinges.

4. Clean the grille gently using a soft sponge, or the like. Then dry it

with care. Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly with water and dry it.

Air intake grille hinge

Latch

Air intake grille hinge

Ceiling panel

2. Open the air intake grille downward.

Air intake grille

3. Press the tabs on both sides of the air filter (indicated with

marks on the grill) to release the filter, and then, lift and pull the filter up and out using the tabs to remove it.

Safety cord

Air filter

Safety cord

CAUTION

• When cleaning the air filter, never remove the safety cord. If it is necessary to remove it for servicing and maintenance inside, be sure to reinstall the safety cord securely (hook on the grille side) after the work.

• When the air intake grille has been opened, rotating parts (such as the fan), electrically charged areas, etc. will be exposed in the unit’s opening. Bear in mind the dangers that these parts and areas pose, and proceed with the work carefully.

• Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.

Care: After a prolonged idle period

Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it.

Care: Before a prolonged idle period

• Operate the fan for half a day to dry out the inside.

• Disconnect the power supply and also turn off the circuit breaker.

• Clean the air filter and replace it in its original position.

• Outdoor unit internal components must be checked and cleaned periodically. Contact your local dealer for this service.

4. Use a vacuum cleaner to remove light dust. If there is sticky dust

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

5. Insert the filter correctly again inside the grille, close the grille

letting the latches slide towards the outside and fix again the latch.

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Page 84

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.

OPERATION lamp blinks and air conditioner does not operate.

Compressor runs but soon stops.

Poor cooling (or heating) performance.

Clicking sound is heard from the air conditioner.

OPERATION lamp lights but outdoor unit will not run.

TIMER lamp blinks (3 sec. interval) and air conditioner does not operate.

1. Power failure. 1. Restore power.

2. Leakage circuit breaker tripped.

3. Line voltage is too low.

4. Batteries in remote control unit have run down.

Trouble in system. Contact service

Obstruction in front of condenser coil.

1. Dirty or clogged air filter.

2. Heat source or many people in room.

3. Doors and/or windows are open.

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.

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

FLOAT SWITCH is actived.

2. Contact service center.

3. Consult your electrician or dealer.

4. Replace batteries.

center.

Remove obstruction.

1. Clean air filter to improve airflow.

2. Eliminate heat source if possible.

3. Shut them to keep the heat (or cold) 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.

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

2. Consult your dealer.

Contact service center.

OPERATING RANGE

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

Temperature Indoor air

temperature

COOLING Max. 95 °F DB /

Outdoor air temperature

115 °F DB

71 °F WB

Min. 67 °F DB /

0 °F DB

57 °F WB

HEATING Max. 80 °F DB /

67 °F WB

75 °F DB / 65 °F WB

Min. – DB / – WB 0 °F DB

WIRED REMOTE CONTROLLER

A separately sold wired remote controller (STK-RCS7TWSU) used with this air conditioner is also available. If you wish to use the wired remote control function, you will need to purchase the optional wired remote controller.

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Page 85

APPENDIX B

XHS1271 & PNR-XS1872 + CH1271 XHS1872 & PNR-XS1872 + CH1872

INSTALLATION INSTRUCTIONS

(II-852-6-4190-477-00-0)

A-2

Page 86

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. Preparation for Suspending 3-2. Suspending the Indoor Unit 3-3. Placing the Unit Inside the Ceiling 3-4. Installing the Drain Piping 3-5. Checking the Drainage 3-6. How to Install the Ceiling Panel 3-7. Wiring Instructions 3-8. Recommended Wire Length and Diameter 3-9. Wiring Instructions for Inter-unit Connections

4. HOW TO INSTALL THE OUTDOOR UNIT ....... 14

4-1. Wiring Instructions for the Outdoor Unit

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

XHS1271 CH1271

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

XHS1872 CH1872

Power Source: 60 Hz, single-phase, 230/208 V

Ceiling Panel

PNR-XS1872

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 ......................................................... 21

7-1. Mounting on a Wall

8. ADDRESS SWITCH .......................................... 22

8-1. Address Setting of the Remote

Control Unit

5. REFRIGERANT TUBING .................................. 15

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................................................... 17

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

SANYO Commercial Solutions In Canada A Division of SANYO North America Corporation SANYO Canada Inc. 1300 Michael Drive, Suite A 1-300 Applewood Crescent, Concord Wood Dale, IL 60191, U.S.A. Ontario, L4K 5C7, Canada

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.

Page 87

IMPORTANT!

WARNING

CAUTION

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 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

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

• Do not supply power to the unit until all wiring and tubing

• Highly dangerous electrical voltages are used in this

• Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause over-

When Transporting

When Wiring

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

are completed or reconnected and checked.

system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or

death.

heating at connection points and a possible fire hazard.

• 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

• 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.

Page 88

Printed on container box

For unit & PVC tube connection

For drain hose connection

RemarksQ’ty

For full-scale installation diagram

For temporarily suspending indoor unit from ceiling

Flare insulation

For wide / narrow tube connection

For wide / narrow tube / flare nut connection

For flare / drain insulating connection

For drain tube connection

Insulation tape

Vinyl tie

Drain hose insulation

Washer

AAA alkaline battery

Remote control unit

Remote control unit holder

Parts PartsFigure RemarksQ’ty Figure

Drain hose

Full-scale installation diagram

5-1/2"(L140)

Hose band

Truss head screw

Hex wrench

Special screw

Cushion rubber

Tapping screw

set

1/8"(T3) 3/16"(T5)

13/32"(T10)

3/32"(T2)

Truss-head Phillips 5/32 5/8" (4 16mm)

3/16 13/32" (5 10mm)

5/32 15/32" (4 12mm)

3/16 1-9/16" (5 40mm)

Packed in the outdoor unit

Packed in the ceiling panel

Use M10 or 3/8" for suspension bolts. Suspension bolts and nuts (locally purchased)

1. General

CAUTION

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

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)

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 air conditioning 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.

2. Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing. Wall thickness

3. Use insulated copper wire for field wiring. Wire size varies with the total length of wiring. Refer to 3-7. Wiring

Table 2

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

of the insulation should be not less than 5/16" (8 mm).

Instructions for details.

Model

XHS1271 1/4" (6.35 mm) 0.0314" (0.8 mm) 3/8" (9.52 mm) 0.0314" (0.8 mm)

XHS1872 1/4" (6.35 mm) 0.0314" (0.8 mm) 1/2" (12.70 mm) 0.0314" (0.8 mm)

Outer Dia. Thickness Outer Dia. Thickness

Narrow Tube Wide Tube

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

Page 89

1-5. Additional Materials Required for Installation

3.3 ft.

(1m)

3.3 ft.

(1m)

3.3 ft.

(1m)

Tubing length (L)

Elevation difference (H)

Outdoor unit

Indoor unit

WARNING

CAUTION

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

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.

AVOID:

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.

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.

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

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

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. 2.

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.

Fig. 1

Fig. 2

Air delivery will be degraded if the distance from the floor to the ceiling is greater than 10 ft. (3 m).

Table 3

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

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

XHS1271 25 65 23 0.16

XHS1872 25 98 50 0.27

* If total tubing length becomes 25 to 65 ft. (Max.) or 25 to 98 ft. (Max.), charge additional refrigerant (R410A) by 0.16 or 0.27 oz./ft.

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

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

Page 90

2-2. Outdoor Unit

Outdoor unit

Hot air

Heat source

Exhaust fan

CAUTION

Min.

7' (2 m)

Min.

7' (2 m)

Ground

Obstacle

Obstacle above

Air discharge

Min. 4" (10 cm)

Air intake

AVOID:

G heat sources, exhaust fans, etc. (Fig. 3)

G damp, humid or uneven locations.

DO:

G choose a place as cool as possible.

G choose a place that is well ventilated.

G install in a location where at least two sides are unob-

structed, so that the flow of air at the intake port or exhaust port is not blocked, and so that sufficient space is ensured for maintenance to be carried out without trouble. In general the top also must be unobstructed. (Figs. 4a and 4b)

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. 5a and 5b)

(CH1271)

Air intake Min. 2" (5 cm)

Min.

2" (5 cm)

Air discharge

Fig. 3

Valve side Min. 10" (25 cm)

Min. 8" (20 cm)

Obstacle above

Min.

7' (2 m)

Air discharge

Min.

7' (2 m)

Obstacle

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

G install cushion rubber under unit’s feet to reduce vibra-

tion and noise. (Fig. 5c)

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

tion and noise.

G install in a location where no antenna of a television or

radio exists within 10' (3 m).

Drain holes

Fig. 5a

Anchor bolts (4 pcs.)

(CH1872)

Air intake Min. 4" (10 cm)

Min.

2" (5 cm)

Air discharge

Fig. 4a

Valve side Min. 10" (25 cm)

Min. 1'4" (40 cm)

Fig. 4b

Ground

Min. 2" (5 cm)

Air intake

Concrete or equal

Abou

t 1'4" (40 cm)

Min. 4" (10 cm)

About 4" (10 cm)

Fig. 5b Fig. 5c

Cushion rubber

Page 91

Hole-in-anchor

Concrete Insert

Suspension bolt (M10 or 3/8")

Hole-in-plug

(locally purchased)

1/2" — 23/32" (13~18

)

Over 19/32" (15

)

Supplied screw

Full-scale installation diagram (printed on top of container box)

3. How to Install the Indoor Unit

Nuts and washers (used for upper and lower)

Double nut

Notch

Suspension lug

Suspension bolt

1/2" — 23/32"

(13~18

)

3-1. Preparation for Suspending

This unit uses a drain pump. Use a carpenter’s level to check that the unit is level.

3-2. Suspending the Indoor Unit

(1) Fix the suspension bolts securely in the ceiling using

the method shown in the diagrams, by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and safely suspended. (Fig. 6-1)

(2) Follow the diagram to make the holes in the ceiling.

Fig. 6-1

23-5/8"(600mm)

Ceiling opening dimensions

21-1/32"(534

Suspension bolt pitch

)

(3) Determine the pitch of the suspension bolts using

the supplied full-scale installation diagram. The diagram shows the relationship between the positions of the suspension fitting, unit, and panel. (Fig. 6-2)

3-3. Placing the Unit Inside the Ceiling

(1) Be sure to remove the fan protection (4pcs) for

transportation before hanging up the indoor unit.

(2) When placing the unit inside the ceiling, determine

the pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 6-3) Tubing and wiring must be laid inside the ceiling when suspending the unit. If the ceiling is already constructed, lay the tubing and wiring into position for connection to the unit before placing the unit inside the ceiling.

(3) The length of suspension bolts must be appropriate

for a distance between the bottom of the bolt and the bottom of the unit of more than 19/32" (15 mm) as shown in the diagram. (Fig. 6-3)

) mm

1-25/32"

(45

)

mm (45

1-25/32"

4-19/32"

(117

Power supply port

22-5/8"(575mm)

6-5/16"2-3/32"

6-11/16"

)(160mm)(53mm)

(170

Refrigerant tubing joint (narrow tube side) 1/4( 6.35mm) (flared)

Fig. 6-2

)

23-5/8"(600

21-1/32"(534

Suspension bolt pitch

Ceiling opening dimensions

Drain tube connection port (outer dia 1-1/32"( 26mm))

) mm

(215

8-15/32"

11-5/32"(283

) mm

1-3/16"

(30

(4) Thread the 3 hexagonal nuts (locally purchased) and

2 supplied washers onto each of the 4 suspension bolts as shown in the diagram. Use 1 nut and 1 washer for the upper side, and 2 nuts and 1 washer for the lower side, so that the unit will not fall off the suspension lugs. (Fig. 6-4)

(5) Adjust so that the distance between the unit and the

ceiling bottom is 1/2" (13 mm) to 23/32" (18 mm). Tighten the nuts on the upper side and lower side of the suspension lug. (Fig. 6-4)

Fig. 6-3

Fig. 6-4

Page 92

Drain port

Twist tie (4 vinyl ties, supplied)

Hard PVC pipe

Position to

Drain hose (supplied)

Hose band (2 bands, supplied)

3/16" (5

)

3/16" (5mm)

15/16"

(25mm)

15/16"

(25mm)

5-1/2"(140

)

Drain hose

(locally purchased)

bands

(supplied)

O.D. 1-1/32" (26mm))

fasten hose

insulation

(equivalent to

Unit

Air bleeder prohibited

Support bracket

Uphill slope

3-4. Installing the Drain Piping

1 ft.(300mm) or less

0 - 45

2.78 ft.(850

) or less

* Length of supplied drain hose = 5-1/2"(140

)

CAUTION

(1) Prepare standard hard PVC pipe (locally purchased O.D.

1-1/32" (26 mm)) for the drain and use the supplied hose band to prevent water leaks. (Fig. 6-5)

(2) To install the drain hose, first place 1 of the 2 hose bands

over the unit drain port and the other hose band over the hard PVC pipe (not supplied). Then connect both ends of the supplied drain hose. (Fig. 6-5)

(3) On the unit drain side, grasp the hose band with pliers

and insert the drain hose all the way to the base.

G If other commercially available hose bands are used, the

drain hose may become pinched or wrinkled and there is danger of water leakage. Therefore be sure to use the supplied hose bands. When sliding the hose bands, be careful to avoid scratching the drain hose.

G Do not use adhesive when connecting the supplied drain

hose to the drain port (either on the main unit or the PVC pipe).

Reasons: a) It may cause water to leak from the connec-

tion. Since the connection is slippery just after the adhesive has been applied, the pipe easily slips off.

b) The pipe cannot be removed when mainte-

nance is needed.

Fig. 6-5

G Attach so that the hose band

fastener is on the side of the drain port.

G Attach the hose bands so that

each is approximately 3/16" (5 mm) to 15/16" (25 mm) from the end of the supplied drain hose.

(4) Wrap the hose with the supplied drain hose insulation

and use the 4 twist ties so that the hose is insulated with no gaps.

G Do not bend the supplied drain hose 90° or more. The

hose may slip off.

NOTE

Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.

G In cases where it is necessary to raise the height of the

drain piping, the drain piping can be raised to a maximum height of 2.78 ft. (850 mm) above the bottom surface of the ceiling. Under no conditions attempt to raise it higher than 2.78 ft. (850 mm) above the bottom surface of the ceiling. Doing so will result in water leakage. (Fig. 6-7)

G Do not use natural drainage. G Do not install the pipe with an upward gradient from the

connection port. This will cause the drain water to flow backward and leak when the unit is not operating.

G Do not apply force to the piping on the unit side when

(Fig. 6-8)

connecting the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 6-9)

G Provide insulation for any pipes that are run indoors.

Fig. 6-6

G Do not install an air bleeder as

this may cause water to spray from the drain pipe outlet. (Fig. 6-6)

Fig. 6-7

Fig. 6-8

Fig. 6-9

Page 93

must be within the range of 1/2"(13mm) to 23/32"(18mm). (Fig. 6-11) If not within this range, malfunction or other trouble may occur.

Ceiling opening dimension

Ceiling side

Indoor unit

3-5. Checking the Drainage

CAUTION

Water drain

Control box

Drain pan outlet

Water

Plastic container for water intake

Over 4" (100

)

(Approx. 16 ounces (500m ) )

Flap

Latch

Air-intake grille

Ceiling panel

Air-intake grille hinge

FLAP

Control box

RCIND

After wiring and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water.

G Be sure to do the wiring between the units before installing the

ceiling panel. (Refer to 3-9. Wiring Instructions for Inter-unit Connections)

(1) Turn on the power. (Here, “power” refers to the power supply

from the outdoor unit.)

(2) Slowly pour approx. 16 ounces (500 ml) of water into the drain

pan to check drainage. (Fig. 6-10a)

(3) Remove the 2 screws from the control box cover, then open

the cover. Be careful not to drop the cover at this time.

(4) Disconnect the FS 3P connector (red) on the control PCB and

operate the drain pump. (Fig. 6-10b) Check the water flow through the transparent drain pipe and see if there is any leakage.

(5) When the check of drainage is complete, reconnect the FS

3P connector and remount the control cover.

The drain pump will continue to operate for a minimum of 6 minutes after the FS 3P connector is reconnected.

Fig. 6-10a

Fig. 6-10b

3-6. How to Install the Ceiling Panel

Checking the unit position

(1) Check that the ceiling hole is 23-5/8" (600 mm) × 23-5/8"

(600 mm) (Fig. 6-11)

(2) Confirm that the position of the indoor unit and the ceiling

as shown in the diagram. If the positions of the ceiling surface and unit do not match, air leakage, water leakage, flap operation failure, or other problems may occur. (Fig. 6-11)

G Never place the panel face-down. Neither hang it ver-

tically nor place it on top of a projecting object. Placing it face-down will damage the surface.

G Do not touch the flap or apply force to it. (This may

cause flap malfunction.) (Fig. 6-12)

3-6-1. Before Installing the Ceiling Panel

(1) Remove the air-intake grille and air filter from the ceiling

panel.

a) Press on and slide the two latches of the air-intake grille

with your thumb in the direction shown by the arrow to open the grille. (Figs. 6-13 and 6-14)

b) With the air-intake grille opened, remove the grille hinge

from the ceiling panel by sliding it in the direction shown by the arrow . (Fig. 6-15)

Fig. 6-12

Fig. 6-14

Fig. 6-11

Fig. 6-13

Fig. 6-15

Page 94

(2) Removing the corner cover and

CAUTION

latch

Temporary latches

Temporary

DRAIN mark

Ceiling panel

Special screws

Refrigerant tubing joint

Drainage check

REF.PIPE mark

Panel installation hole (4 locations)

Indoor unit

Ceiling panel

Ceiling surface

Do not allo

gaps

indicator cover

a) While lightly pressing the cen-

ter of the corner cover, pull up the tab for the screw hole. Use the same procedure to remove the indicator cover. (Fig. 6-16)

Corner cover

Press

Pull up

Indicator cover

3-6-2. Installing the Ceiling Panel

(1) Hang the temporary latches on the inside of the ceil-

ing panel to the receptacle on the unit to temporarily attach the ceiling panel in place. (Fig. 6-17)

G The ceiling panel must be installed in the correct

direction relative to the unit. Align the REF. PIPE and DRAIN marks on the ceiling panel corner with the correct positions on the unit.

(2) Align the panel installation holes and the unit screw

holes. (Fig. 6-18)

(3) Tighten the supplied special screws at the 4 panel

installation locations so that the panel is attached tightly to the unit.

G Check that the wiring connectors are not caught

between the unit and the ceiling panel.

(4) Check that the panel is attached tightly to the ceiling.

(Fig. 6-19)

G At this time, make sure that there are no gaps

between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface.

G If there is a gap between the panel and the ceiling,

leave the ceiling panel attached and make fine adjustments to the installation height of the unit to eliminate the gap with the ceiling.

Fig. 6-16

Fig. 6-17

Fig. 6-18

If the screws are not sufficiently tightened, trouble such as that shown in the figure below may occur. Be sure to tighten the screws securely.

Air leakage

Air leakage from

ceiling surface

Staining

Condensation, water leakage

If a gap remains between the ceiling surface and the ceiling panel even after the screws are tightened, adjust the height of the unit again.

Adjust so that there are no gaps.

Fig. 6-20

Fig. 6-19

The height of the unit can be adjusted from the ceiling panel corner hole, with the ceiling panel attached, to an extent that does not affect the unit levelness, the drain hose, or other elements.

Page 95

fit into the holes in the ceiling panel.

Place the corner cover so that the 3 tabs

Then fasten it in place with the supplied screws.

Hole for ceiling panel hook

the grille from dropping

Hook that prevents

Can be installed rotated 90

* The grille can be installed

with these hinges facing in any of 4 directions.

3-6-3. Wiring the Ceiling Panel and the Indicator

FLAP

RCIND

Indicator

7P IND and 4P RC wiring connector

7P IND and 4P RC

Ceiling panel

5P FLAP wiring connector

Clamps

Control box

Indoor unit

* Pass the wiring connectors through the clamps to fasten them in place,

as shown in the figure.

wiring connector

5P FLAP

wiring connector

Control box

As to how to attach the indicator cover, refer to Fig.6-23.

Drain pipe side

Refrigerant tube side

Indicator cover

Power box

(1) Remove the 2 screws from the control box cover, then open

the cover. Be careful that the cover does not fall.

(2) Connect the 5P FLAP wiring connector from the ceiling

panel to the connector on the control PCB in the control box. (Fig. 6-21)

(3) Connect the 7P IND and 4P RC wiring connector from the

indicator to the connectors on the control PCB in the control box. (Fig. 6-21)

(4) Be sure to use the clamps to fasten the connector wires in

place. (Fig. 6-21)

(5) Tighten the 2 cover screws to

close the cover.

G Check that the wiring

connectors are not caught between the electrical component box and the cover.

G If the indicator connector is

not securely connected, the remote controller signal will not be received.

G If the connectors are not

connected, the auto flap will not operate. Be sure to connect them securely.

Fig. 6-22

3-6-4. How to Attach the Corner Cover and Air-Intake Grille

A. Attaching the corner cover

(1) Check that the safety strap from the corner cover is fas-

(2) Use the supplied screws to attach the corner cover to the

B. Attaching the air-intake grille

G To install the air-intake grille, follow the steps for 3-6-1.

Before Installing the Ceiling Panel in the reverse order. By rotating the air-intake grille, it is possible to attach the grille onto the ceiling panel from any of 4 directions. (Fig. 6-25)

G When attaching the air-intake

grille, be careful that the flap and the indicator wiring do not become caught.

G Be sure to attach the safety

cord that prevents the air-intake grille from dropping off to the ceiling panel unit as shown in Fig. 6-24.

tened to the ceiling panel pin, as shown in the figure. (Fig. 6-23)

ceiling panel.

Fig. 6-24 Fig. 6-25

Fig. 6-21

Fig. 6-23

Page 96

3-6-5. Checking After Installation

G Check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling sur-

face. Gaps may cause water leakage and condensation.

G Check that the wiring is securely connected.

If it is not securely connected, the auto flap will not operate. In addition, water leakage and condensation may occur.

3-6-6. When Removing the Ceiling Panel for Servicing

When removing the ceiling panel for servicing, remove the air-intake grille and air filter, disconnect the flap and the indicator wiring connectors inside the control box, and then remove the 4 mounting screws.

3-6-7. Adjusting the Auto Flap

The air-direction flap on the ceiling panel outlet can be adjusted as follows.

G Adjust the flap to the desired angle using the remote controller. The flap also has an automatic air-sweeping mecha-

nism.

NOTE

G Never attempt to move the flap by hand.

G Proper air flow depends on the location of the air conditioner, the layout of the room and furniture, etc. If cooling or

heating seems inadequate, try changing the direction of the air flow.

3-7. 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.

(3) To prevent possible hazards due to insulation failure, 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 manu-

facturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes.

3-8. 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 4 lists recommended wire lengths and diameters for power supply systems.

NOTE

Refer to the wiring system diagram (Fig. 7a or Fig. 7b) for the meaning of (A), (B) and (C) in Table 4.

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

Page 97

Table 4

WARNING

CAUTION

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

Area (AWG)

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

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

CH1872 131 (Max.) 230 (Max.) 98 (Max.) 20A

G Be sure to comply with local codes on running the

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

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.

G To avoid the risk of electric shock, each air con-

ditioner 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.

Fuse or Circuit

Breaker Capacity

# ... AWG (American Wire Gauge)

WIRING SYSTEM DIAGRAM

(CH1271)

INDOOR

UNIT

Te r mi nal Terminal

Disconnect

switch Field supply

(C)

Grounding line

115V

(B)

OUTDOOR

UNIT

Fig. 7a

(CH1872)

INDOOR

UNIT

Te r mi nal Terminal

Disconnect

switch Field supply

(C)

230/208V

Grounding line

(B)

OUTDOOR

UNIT

Powe r supply

(A)

Grounding line

Powe r supply

(A)

Single phase 115V 60HZ

Single phase 230/208V 60HZ

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 3'3" (1 m) from the power cable and wires between the indoor and outdoor units. Electrical noise may affect the operation.

Fig. 7b

NOTE

A disconnect switch may be required by national or local codes.

Always comply with national and local code requirements.

Grounding line

Page 98

WARNING

Earth screw

Clamping strap

(Conduit)

Inter unit

Power wiring (Locally purchased)

3-9. Wiring Instructions for Inter-unit Connections

(1) Remove the 1 screw from the terminal cover, then open the

cover. Be careful that the cover does not fall.

(2) Remove the 3 screws from the power box cover, then open

the cover. Be careful that the cover does not fall.

(3) Use the screw to securely fasten the ground wire from the

outdoor unit in place.

(4) Remove the transparent plastic cover from the 3P terminal

plate.

(5) While viewing the wiring diagram, connect the inter-unit and

power supply line to terminals 1, 2 and 3 on the 3P terminal plate.

(6) Remount the transparent plastic cover onto the 3P terminal

plate.

(7) Be sure to use the clamping strap to fasten the wires in place.

(8) Tighten the screws to remount the terminal and the power

box cover.

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.

Fig. 8

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. 9) 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 completely 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. 10)

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

plate.

9/32"

STRIP SIZE

(7 mm)

Fig. 9

Solid wire

Strip 15/16" (25 mm)

Insulation

Fig. 10

(ACTUAL

SIZE)

Loop

(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 terminal plate and fix

it securely with the removed terminal screw using a screwdriver.

Page 99

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. 11 and 12)

(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. 11)

(4) Place the ring connector wire, and replace and tighten the removed terminal screw using a screwdriver. (Fig. 13)

Stranded wire

Ring connector

Strip 3/8" (10 mm)

Fig. 11

Tw ist wire ends

Fig. 12

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.

Te r mi nal block

Wire

Special washer

Lock nut

Screw

Ring connector

Te r mi nal plate

Wire

Fig. 13

Cabinet

Screw and special washer

Ring connector

(1) Remove access panel “C”. (Fig. 14)

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

according 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.

Conduit plate

Plug

Inter unit (Conduit)

Access panel “C”

Power supply (Conduit)

Fig. 14

Page 100

5. Refrigerant Tubing

Flare nut

Union

Deburring

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

(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. 15)

NOTE

When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 16)

Before

After

Fig. 15

Copper tubing

Reamer

Fig. 16

(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. 17 and 18)

(*Use “RIDGID” 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.

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. 19)

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. 20)

If the special R410A flare tool is used:

0 to 0.0196" (0 to 0.5 mm)

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. 17

Flare nut

Copper tubing

Flare tool

Fig. 18

Apply refrigerant lubricant here and here

Fig. 19

Fig. 20

Sanyo XHS1271 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual