Sanyo PNR-XS1872, XMS1272, XMS0972, XS1872 User Manual

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TECHNICAL & SERVICE MANUAL

INDOOR UNIT : XMS0972 & PNR-XS1872

FILE NO.

XMS1272 & PNR-XS1872 XS1872 & PNR-XS1872

Destination: North America

DC INVERTER MULTI-SYSTEM AIR CONDITIONER

Capacity

9,000BTU / h

11,900BTU / h

17,500BTU / h

Indoor Model No.

Body (Panel)

XMS0972 (PNR-XS1872)

XMS1272 (PNR-XS1872)

XS1872 (PNR-XS1872)

Semi-Concealed Type Indoor Unit

Product Code No.

Body (Panel)

1 852 353 72 (1 852 352 11)

1 852 353 71 (1 852 352 11)

1 852 352 09 (1 852 352 11)

Body

Panel

XMS0972 (Body) & PNR-XS1872 (Panel) XMS1272 (Body) & PNR-XS1872 (Panel) XS1872 (Body) & PNR-XS1872 (Panel)

< Applicable Multi-Outdoor Units >

CM1972 (3-room multi unit) CM2472 (4-room multi unit) CM3172 (4-room multi unit)

NOTE

For details about the combinations, refer to "Unit Combination Table" in the T. Service Manual for the Multi Outdoor Units.

Wireless Remote Controller

Wired Remote Controller

(Option)

REFERENCE NO. SM700815

SAFETY PRECAUTIONS

• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them.

• The precautionary items here are divided into " Warning" and " Caution" items. 

Items in particular which may cause death or serious injury to the service personnel if the work is not performed correctly,  are included in the " Warning" table. However, even precautionary items identified as " Caution" also have the potential for serious consequences if not performed correctly. Important safety precautions are described for all items in both categories. Be sure to carefully follow all of them.

• Symbol Indication : This symbol indicates items to which we need to pay attention.

In this triangle, a definite precautionary item is described.

: This symbol indicates the item to be prohibited.

In or close to this circle, a prohibited item is described.

: This symbol indicates the items requiring special attention or instruction.

In or close to this circle, a prohibited item is described.

• After doing repair work, perform a test run to confirm that there are no abnormalities.

At the same time, explain the precautions in use to the user.

Warning

Before performing an overhaul, disconnect the power plug or power cable from the unit. Performing the work with the power supplied to the unit, may cause an electric shock.

When repair work or circuit inspection that requires power supply for the air conditioner, is to be performed, do not touch the charging section. Doing so may cause an electric shock.

Prohibit

For the step-up capacitor attached to the electric section, perform the repair work after sufficiently discharging it. Insufficient capacitor discharge may cause an electric shock.

Do not perform repair work on the electric sections with wet hands. Doing so may cause an electric shock.

Do not start or stop the air conditioner by means of connecting or disconnecting the power plug. Doing so may cause an electric shock or fire.

When conducting repair work only use components included in the parts list for the corresponding unit and perform the work with the appropriate tools. Incorrect or poor repair work may cause an electric shock or fire.

Never modify the unit. Doing so may cause an electric shock or fire.

Perform all electric work according to local applicable regulations related to electrical equipment or interior wiring regulation and make sure to use the exclusive circuit. Insufficient capacity to the electric circuit or defective arrangement results may cause an electric shock or fire.

Make sure to replace any power cable or lead wire showing any signs of scratch or deterioration. Failure to do so may cause an electric shock, overheating or fire.

Make sure that there is no dust on or slack in the power plug and insert fully into the socket. Dust or incomplete connections may cause an electric shock or fire.

Do not damage or process the power cord, as it may cause an electric shock or fire.

Prohibit

For the wiring between the indoor unit and outdoor unit, securely fix the specified cable onto the terminal plate. Poorly fixed wiring may cause a heat or fire.

After connecting the wiring between the indoor unit and outdoor unit, attach the terminal cover securely. Incomplete attachment of the terminal cover may cause overheating or fire.

Warning

If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite.

If refrigerant gas leaks during the work, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated.

Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle. If air or other contaminants mix with the gas, pressure will become extremely high in the refrigerating cycle, which may cause a unit breakdown."

When the welded section of the compressor intake or discharge pipe is to be disconnected, perform it in a well-ventilated place after sufficiently recovering the refrigerant gas. Any residue gas may jet out refrigerant or refrigerating machine oil, which may cause an injury.

When the work is to be performed in a high place (About 2 meters or more), make sure to wear a safety helmet, gloves and safety belt. Insufficient safety gear may cause a serious injury in case of a fall.

When the unit is to be relocated, confirm that the new installation location has sufficient strength for the weight of the unit. Insufficient strength of the installation location and incomplete installation work may cause an injury due to the unit falling.

When the remote controller batteries are replaced, dispose of the old batteries out of the reach of children. If a child swallows a battery, make sure that the child gets immediate medical attention.

Caution

Do not wash the air conditioner with water, as this may cause an electric shock or fire.

For the repair work in places with high humidity or moisture, make sure to ground the unit. Failure to do so may cause an electric shock.

Confirm that the component attachment position, wiring condition, soldering condition and connector connection are normal. If not, it may cause overheating or fire.

Confirm that the temperature around the compressor is not too high, and then perform the repair work. Failure to do so may cause a burn.

Perform welding work in a place with good ventilation. If the work is performed in a poorly ventilated area, it might cause a lack of oxygen.

If the installation plate or attachment frame has deteriorated due to corrosion, etc., replace it. Failure to do so may cause an injury due to the unit falling.

When the cleaning is to be performed, make sure to turn off the power and pull out the plug. Touching the fan that is rotating at high speed may result in an injury.

When the indoor unit is to be removed, do not place it on an incline. Doing so may cause wet furniture because water left inside may trickle down.

Do not hold the sharp end of the unit or the aluminum fins, as it may cause an injury to your hand or finger.

After repairs, make sure to measure the insulation resistance and confirm that the value is 1 Mohm or more. Any insulation error may cause an electric shock.

After repairs, make sure to check the drainage of the indoor unit. Inappropriate drainage may cause wet furniture and floors due to water leakage.

Prohibit

SAFETY PRECAUTIONS

APPLICABLE MULTI-OUTDOOR UNITS

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. ELECTRICAL DATA

5-1. Electric Wiring Diagrams

6. MAINTENANCE

6-1. Disassembly Procedure

7. FUNCTIONS

7-1. Operation Functions 7-2. Protective Functions

8. TROUBLESHOOTING

8-1. Precautions before Performing Inspection or Repair 8-2. Method of Self-Diagnostics 8-3. Checking the Indoor and Outdoor Units 8-4. Trouble Diagnosis of Fan Motor 8-5. Noise Malfunction and Electromagnetic Interference

APPENDIX A INSTRUCTION MANUAL  (XMS0972 & PNR-XS1872, XMS1272 & PNR-XS1872)

APPENDIX B INSTRUCTION MANUAL  (XS1872 & PNR-XS1872)

APPENDIX C INSTALLATION INSTRUCTIONS  XMS0972 & PNR-XS1872, XMS1272 & PNR-XS1872,  XS1872 & PNR-XS1872

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TABLE OF CONTENTS

8 14 17

28 30

31 31 33 37 38

A-1

A-2

A-3

Page

()

Page

APPENDIX D INSTRUCTION MANUAL

.........................................................................................

 (STK-RCS-7TWSUA)

APPENDIX E INSTALLATION INSTRUCTIONS  (STK-RCS-7TWSUA)

............................................................................

A-4

A-5

APPLICABLE MULTI-OUTDOOR UNITS

Multi-Outdoor Unit

Indoor Unit

XMS0972 & PNR-XS1872

XMS1272 & PNR-XS1872

XS1872 & PNR-XS1872

3-Room

CM1972

YES

4-Room

CM2472

YES

4-Room

CM3172

YES

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Maximum

Minimum

95 °F D.B. / 71 °F W.B.

67 °F D.B. / 57 °F W.B.

115 °F D.B.

67 °F D.B.

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit XMS0972 & PNR-XS1872

2-1-1.

Vertical

dB-AIndoor : Hi/Me/Lo

Air Filter Refrigerant

0.1 16

9,000

2.65

Cooling

230V Single-Phase 60Hz

187 to 253

Refrigerant Tubing Connections

Operation Sound

Electrical Rating

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)

Flare Type

33 / 32 / 31

R410A

Washable, Anti-Mold

Auto

Timer

IndoorFan Speeds

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

Auto and 3 steps

Airflow Direction (Indoor) Horizontal

Controls / Temperature Control Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Features

Air Clean Filter

BTU/h

Performance

Voltage Rating

Total Capacity

Semi-Concealed Type Indoor Unit

<230V>

Type

221 (375)

Air Circulation (High) ft

/min (m3/h)

3.4

Moisture Removal (High) Pints/h

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

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

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

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

Shipping Volume

Net Shipping

Weight Ib. (kg)

Ib. (kg)

cu.ft (m

)

inch (mm)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

22-5/8 (575)

35.3 (16)

Individual Unit

Body

(XMS0972)

Panel

(PNR-XS1872)

Indoor Unit

(XMS0972 & PNR-XS1872)

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

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

(18.7)41.3

11-5/32 (283)

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

inch (mm)

Package Dimensions Height

Width Depth 28-1/8 (714)

inch (mm) -

11-13/32 (290)

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

41.9 (19)

4.59 (0.13)

24-19/32 (625)

6.0 (2.7)

1-9/16 (40)

24-19/32 (625)

26-11/16 (678)

4-1/8 (105)

26-3/16 (665)

7.7 (3.5)

1.65 (0.04)

Indoor Unit XMS0972 & PNR-XS1872

Type

Voltage Rating

Total Capacity

BTU/h

Air Circulation (High) ft3/min (m3/h)

Performance

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

V A

WPower Input

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube

Wide tube Accessories Wired Remote Controller (Option) STK-RCS-7TWSUA

Semi-Concealed Type Indoor Unit

208V Single-Phase 60Hz

Cooling

9,000

2.65

221 (375)

187 to 253

0.11

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto and 3 steps

Auto

Washable, Anti-Mold

R410A

33 / 32 / 31

Flare Type

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

Air Clean Filter

<208V>

3.4

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width

Depth Package Dimensions Height

Width

Depth 28-1/8 (714) Weight Ib. (kg)

Shipping Volume

Net

Shipping

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

(XMS0972 & PNR-XS1872)

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

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

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

Ib. (kg)

cu.ft (m

)

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

(18.7)41.3

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

(XMS0972)

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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)

Indoor Unit XMS1272 & PNR-XS1872

Type

Voltage Rating

Total Capacity

BTU/h

Air Circulation (High) ft

Performance

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

/min (m3/h)

V A

WPower Input

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube

Wide tube Accessories Wired Remote Controller (Option) STK-RCS-7TWSUA

Semi-Concealed Type Indoor Unit

230V Single-Phase 60Hz

Cooling

11,900

235 (400)

4.26

187 to 253

0.11

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto and 3 steps

Auto

Washable, Anti-Mold

R410A

34 / 32 / 31

Flare Type

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

Air Clean Filter

<230V>

3.5

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width

Depth Package Dimensions Height

Width

Depth 28-1/8 (714) Weight Ib. (kg)

Shipping Volume

Net

Shipping

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

(XMS1272 & PNR-XS1872)

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

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

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

Ib. (kg)

cu.ft (m

)

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

(18.7)41.3

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

(XMS1272)

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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)

Indoor Unit XMS1272 & PNR-XS1872

Type

Voltage Rating

Total Capacity

BTU/h

Air Circulation (High) ft3/min (m3/h)

Performance

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

V A

WPower Input

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube

Wide tube Accessories Wired Remote Controller (Option) STK-RCS-7TWSUA

Semi-Concealed Type Indoor Unit

208V Single-Phase 60Hz

Cooling

11,900

235 (400)

4.26

187 to 253

0.12

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto and 3 steps

Auto

Washable, Anti-Mold

R410A

34 / 32 / 31

Flare Type

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

Air Clean Filter

<208V>

3.5

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width

Depth Package Dimensions Height

Width

Depth 28-1/8 (714) Weight Ib. (kg)

Shipping Volume

Net

Shipping

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

(XMS1272 & PNR-XS1872)

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

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

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

Ib. (kg)

cu.ft (m

)

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

(18.7)41.3

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

(XMS1272)

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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)

Indoor Unit XS1872 & PNR-XS1872

Type

Voltage Rating

Total Capacity

BTU/h

Air Circulation (High) ft

Performance

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

/min (m3/h)

V A

WPower Input

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube

Wide tube Accessories Wired Remote Controller (Option) STK-RCS-7TWSUA

Semi-Concealed Type Indoor Unit

230V Single-Phase 60Hz

Cooling

17,500

5.15

341 (580)

4.89

187 to 253

0.15

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto and 3 steps

Auto

Washable, Anti-Mold

R410A

44 / 40 / 36

Flare Type

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

Air Clean Filter

<230V>

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width

Depth Package Dimensions Height

Width

Depth 28-1/8 (714) Weight Ib. (kg)

Shipping Volume

Net

Shipping

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

(XS1872 & PNR-XS1872)

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

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

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

Ib. (kg)

cu.ft (m

)

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

(18.7)41.3

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

(XS1872)

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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)

Indoor Unit XS1872 & PNR-XS1872

Type

Voltage Rating

Total Capacity

BTU/h

Air Circulation (High) ft

Performance

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

/min (m3/h)

V A

WPower Input

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube

Wide tube Accessories Wired Remote Controller (Option) STK-RCS-7TWSUA

Semi-Concealed Type Indoor Unit

208V Single-Phase 60Hz

Cooling

17,500

5.15

341 (580)

4.89

187 to 253

0.16

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

Auto and 3 steps

Auto

Washable, Anti-Mold

R410A

44 / 40 / 36

Flare Type

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

Air Clean Filter

<208V>

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width

Depth Package Dimensions Height

Width

Depth 28-1/8 (714) Weight Ib. (kg)

Shipping Volume

Net

Shipping

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

(XS1872 & PNR-XS1872)

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

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

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

Ib. (kg)

cu.ft (m

)

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

(18.7)41.3

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

(XS1872)

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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)

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit (Body) XMS0972

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-XMS0972

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)

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))

Safety 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-69FV-D866-1 ... 1

440

DC280V / 23W

Internal Controller

Yes Yes

PLD-12230ST-1 ... 1

AC208 to 240V, 60Hz

10.8

333 +/- 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.

MP24ZN-12V ... 2

18.1

2.94 (0.273) Face Area

DC 12V

Indoor Unit (Body) XMS1272

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-XMS1272

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)

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))

Safety 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-69FV-D866-1 ... 1

470

DC280V / 23WRating 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

Indoor Unit (Body) XS1872

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-XS1872

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)

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)) Safety 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

DC340V / 20WRating Voltage / Nominal Output

Internal Controller

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

2-3. Other Component Specifications

Indoor Unit XMS0972 & PNR-XS1872

 XMS1272 & PNR-XS1872  XS1872 & PNR-XS1872

• Indoor air temp sensor

(Model:KTEC-35-S98)

Resistance (k ohm)

59 68 77 86 95 104

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

Temperature °F (°C)

• Indoor heat exchanger sensor

(Model:PT2M-51H-S3)

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)

3. DIMENSIONAL DATA

Indoor Unit  XMS0972 & PNR-XS1872

 XMS1272 & PNR-XS1872  XS1872 & 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)

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit XMS0972 & PNR-XS1872  XMS1272 & PNR-XS1872

Indoor unit

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

Heat exchanger

Strainer

Indoor Unit XS1872 & PNR-XS1872

Indoor unit

Heat exchanger

Strainer

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

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

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

Cooling cycle

5. ELECTRICAL DATA

5-1. Electric Wiring Diagrams

Indoor Unit XMS0972 & PNR-XS1872

 XMS1272 & PNR-XS1872  XS1872 & PNR-XS1872

FLAP (R)

FLAP (W)

IND LAMP ASSY

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

BLK

VLT BLU PNK YEL

ORG RED BRN

GRN BLK

WHT

BLK

BLK BLK

FLOAT SWITCH

THERMISTOR

ORG

BLU

BRN

WHT

BLK

WHT

BRN

BLU

ORG

BLK

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

6. MAINTENANCE

6-1. Disassembly Procedure

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

Warning

6-1-1. 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

6-1-2. 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)

Control PCboard

Hook

CN13

CN04

CN12

Screw Control box cover

Fig.4 Fig.5

6-1-3. 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

Corner cover

Lead wire

Clamp

Corner coverCorner cover

Pull down section 2.

Fig.6 Fig.7

Bolt

Cover

Center 1

Strap

Remove the strap from the hook.

Bolt

Fig.8 Fig.9

6-1-4. 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

6-1-5. 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

(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

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.

6-1-6. 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

6-1-7. Remove the heat exchanger sensor.

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

Fig.19

6-1-8. 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

6-1-9. 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

6-1-10. 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

7. FUNCTIONS

7-1. 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 STOP

(GREEN) (Lamp Off)

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

 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 temperature.

•  When the monitoring range is entered, the compressor stops, and the indoor fan operates with 1/f fluctuation.

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

PAM- control

• In order to further improve inverter performance, control is switched between PWM control at low operation speeds, and PAM control at high operation speeds, making the most effective use of power.

HIGH POWER

NIGHT SETBACK

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

 HIGH POWER operation from remote controller  The unit operates at maximum output for 30 minutes,

regardless of the desired temperature.

 The fan speed is 1 step above "High."

Frequency

MAX

30 min. 5 min.

Start End

Time

NOTE

 When HIGH POWER operation ends, the unit operates at low

Hz for 5 minutes, regardless of the thermostat OFF conditions.

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

 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

Lamp colors

OPERATION lamp

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

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.

7-2. Protective Functions

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)

(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.

8. TROUBLESHOOTING

8-1. 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.

8-2. 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

(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

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

Check the indoor unit.

Is the fuse blown?

Replace the controller.

Replace the circuit

board or the fuse.

No indicators illuminate and the indoor fan does not rotate.

Check the power voltage.

•

Normal

Blown

8-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

(2) Checking the outdoor unit

Using the TEST/T-RUN terminals

ControlNo. Check items (unit operation)

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

operation by 60 times faster than normal).

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

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

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

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

•

ControlNo. Check items (unit operation)

Apply the rated voltage between outdoor unit terminals L and N.

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

1 The control panel LED (red) must illuminate.

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

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

•

TEST/T-RUN terminals

(TEST)/MV T-RUN COM

For the "Test run" procedure, refer to the Appendix B "Installation Instructions".

(3) Serial Communication Error Identification Procedure

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

(3-1) Condition: E01

< Before the Operation >

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.

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

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.

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

Alligator Clip

Cable

( Continued to the next page A. )

( Continued to the next page B. )

Fig. 1

Outdoor Unit

Power

1 2 43 5 6

1 2 3

Indoor Unit

Outdoor Unit

1 2 43 5 6

1 2 3

Power

Indoor Unit

Fig. 2

NOTE

Lamp TimerOperation

:Off

: Blinking

Condition

: Illuminated

E01

E12

High Power

< 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.)

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.)

For terminal strip short circuit work or inter-unit wiring removal, turn off the power to avoid an electric shock. Release the terminal strip short circuit after the completion of self-diagnostics.

Warning

Do not perform the short-circuit work between any other terminals except for specified ones on the specified terminal strip. If such work is performed between the incorrect terminals, the unit might be broken.

Caution

Prohibit

What is the latest self-diagnosis result ?

Condition: E12

Defect in the outdoor unit

P. C. board.

Condition: E01

Defect or connection error

in the inter-unit cable

Defect in the indoor unit

P.C. board

( Continued from the previous page A. )

( Continued from the previous page B. )

1 2 43 5 6

1 2 3

Outdoor Unit

Power

Fig. 3

Indoor Unit

1 2 43 5 6

1 2 3

Outdoor Unit

Power

Fig. 4

Indoor Unit

1 2 43 5 6

1 2 3

Outdoor Unit

Power

Fig. 5

Indoor Unit

Condition: E12

Condition: E01

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.

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 ?

Defect in the indoor unit

P.C. board

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 or connection error

in the inter-unit cable

Yes

(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 indoor  unit terminal strip. (Fig. 7)

Defect in the indoor unit

P.C. board

Defect in the outdoor unit

P.C. board

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.

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)

Defect in the inter-unit

cable

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.

Condition: E12

Condition: E01

Condition: E12

What is the latest self-diagnosis result ?

1 2 43 5 6

1 2 3

Outdoor Unit

Fig. 6

Power

Indoor Unit

1 2 43 5 6

1 2 3

Power

Fig. 7

Outdoor Unit

Indoor Unit

[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.

8-4. Trouble Diagnosis of Fan Motor

8-4-1. Indoor Fan Motor

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

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

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

(Diagnostic procedure)

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

unit controller (3 locations).

(Diagnostic results)

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

(Reference) DC motor connector pin arrangement

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

Important:

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

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

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

Measurement location

DC 15V +/- 10%

Fluctuation between DC 1.8V to 5.7V

DC 280V to 340V

Normal value

8-5. Noise Malfunction and Electromagnetic Interference

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

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

(1) Noise malfunction

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

Locations most susceptible to noise

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

2. Locations near amateur radio (short wave) stations

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

Correction

(The fundamental concept is to make the

system less susceptible to noise.)

- Insulate for noise or

distance from the noise source. -

1. Use shielded wires.

2. Move unit away from the noise source.

Trouble

Either of the following trouble may occur.

1. The unit may stop suddenly during operation.

2. Indicator lamps may flicker.

(2) Electromagnetic interference

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

Locations most susceptible to noise

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

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

3. Locations where television and radio signals are weak.

Correction

1. Select a separate power source.

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

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

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

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

6. Use a signal booster.

Trouble

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

2. Static occurs in the radio sound.

APPENDIX A

XMS0972 & PNR-XS1872 XMS1272 & PNR-XS1872

INSTRUCTION MANUAL

(OI-852-6-4181-141-00-0)

A-1

XMS0972 XMS1272

COOL/DRY 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-85264181141000

Save These Instructions! Conserver ce mode d’emploi

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 cooling and drying operation.

• Automatic Restart Function for Power Failure

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

• High Power Operation

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

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. Operation.............................................................................................................................9

2. Adjusting the Fan Speed .....................................................................................................9

3. Fan Only..............................................................................................................................9

4. Night Setback Mode.......................................................................................................... 10

5. HIGH POWER Mode......................................................................................................... 10

SPECIAL REMARKS........................................................................................................................10

SETTING THE TIMER......................................................................................................................10

USING THE 1-HOUR OFF TIMER................................................................................................... 12

TIPS FOR ENERGY SAVING...........................................................................................................12

ADJUSTING THE AIRFLOW DIRECTION .......................................................................................12

OPERATION WITHOUT THE REMOTE CONTROL UNIT............................................................... 13

CARE AND CLEANING....................................................................................................................13

TROUBLESHOOTING......................................................................................................................15

OPERATING RANGE .......................................................................................................................15

WIRED REMOTE CONTROLLER ....................................................................................................15

Page

OI-141-2-EG

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 the room too much if babies or invalids are present.

OI-141-3-EG

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.

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.

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

OPERATION lamp

TIMER lamp This lamp lights when the system is being

HIGH POWER lamp

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

When the remote control unit cannot be used, pressing this button enables cooling operation.

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

Cooling operation

This lamp lights when the system is in the continuous DRY (orange), COOL (green) and FAN (green) mode.

controlled by the timer.

This lamp lights during operation in the HIGH POWER mode.

Stop

NOTE

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

OI-141-4-EG

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

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

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

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

(2) Fan speed

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

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

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

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

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

(3) Temperature setting

60–86°F When set to 80 °F

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

OI-141-5-EG

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

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

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

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 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 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 unit 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-141-6-EG

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 DRY, COOL or FAN mode.

(DRY) : The air conditioner reduces the humidity in the room. (COOL) : The air conditioner makes the room cooler. (FAN) : The air conditioner works only as a circulation fan.

NIGHT SETBACK button

For details, see “4. Night Setback Mode”. When you press this button in the DRY or COOL mode, the mark appears in the display, and the remote control unit will automatically adjust the set temperature to save energy.

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)

OI-141-7-EG

USING THE REMOTE CONTROL UNIT

HOW TO INSTALL BATTERIES

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 unit cannot be used to change the air conditioner’s settings.

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

• In replacing batteries, follow the instructions as mentioned in the subsection “HOW TO INSTALL BATTERIES”.

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

• 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)

OI-141-8-EG

OPERATION WITH THE REMOTE CONTROL UNIT

1. Operation 2. Adjusting the Fan Speed

A. Automatic fan speed

Simply set the FAN SPEED selector button to the position. This automatically sets the best fan speed for the room temperature.

B. Manual fan speed

If you want to adjust fan speed manually during operation, just set the FAN SPEED selector button as desired. [ ,

STEP 2

STEP 3

3. Fan Only

, or ]

STEP 2

STEP 4

STEP 5

NOTE

STEP 1

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

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

STEP 1 Press the MODE selector button

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.

and select the desired mode. 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 12.)

or 86 °F max.

60 °F min.

→ → →

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 ).

STEP 1

NOTE

OI-141-9-EG

• 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.

4. Night Setback Mode

Night Setback Mode is used for saving energy.

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

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

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

To cancel, press HIGH POWER button again.

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

NOTE

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.

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

In Cooling and DRY Mode: ( and )

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

Setting temperature

Press the NIGHT SETBACK button

2°F

30 min.

2°F

30 min.

Time

5. HIGH POWER Mode

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 when combined with the outdoor unit for Low Ambient Cooling models.

Power failure during operation

• In the event of power failure, the unit will stop. When the power is resumed, the unit will restart automatically in approximately 5 minutes by the remote control unit.

Clicking Sound

Clicking sound is heard from the air conditioner

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

Remote Control Unit

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

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 unit.

• Temperature: °F

• Time: AM, PM

OI-141-10-EG

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.

2. How to set the OFF time

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

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.

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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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

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 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.

CAUTION

• Use the FLAP button on the remote control unit to adjust the position of the flap. If you move the flap by hand, the flap position according to the remote control unit 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

FAN

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.

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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 operation mode changes cyclically.

Cooling operation

NOTE

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

Stop

• 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.

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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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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 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.

In cooling operation, any plastic parts may 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 out.

4. Remove it to ensure good airflow.

5. Set the temperature lower.

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: For Cooling Only Models : CM1972, CM2472, CM3172

Temperature Indoor air

temperature

COOLING Max. 95 °F DB /

Outdoor air temperature

115 °F DB

71 °F WB

Min. 67 °F DB /

67 °F DB

57 °F WB

WIRED REMOTE CONTROLLER

A separately sold wired remote controller (STK-RCS7TWSU, 7TWSUA) 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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APPENDIX B

XS1872 & PNR-XS1872

INSTRUCTION MANUAL

(OI-852-6-4181-108-00-1)

A-2

XS1271 XS1872

COOL/DRY 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-85264181108001

Save These Instructions! Conserver ce mode d’emploi