Sanyo KHS3082 + CH3082, KHS3682 + CH3682, SAP-FDRV96EH, SAP-FDRV186EH, SAP-FDRV126EH Technical & Service Manual

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Page 1

TECHNICAL & SERVICE MANUAL

KHS3082 + CH3082

FILE NO.

KHS3682 + CH3682

Destination: North America

DC INVERTER SPLIT SYSTEM AIR CONDITIONER

Indoor Model No.

KHS3082

KHS3682

Indoor Unit Outdoor Unit

Product Code No.

1 852 354 28

1 852 354 29

Outdoor Model No.

CH3082

CH3682

Product Code No.

1 852 354 32

1 852 354 33

KHS3082 KHS3682

IMPORTANT

These air conditioners employ new refrigerant R410A.

Pay special attention when servicing the unit.

CH3082 CH3682

REFERENCE NO.

SM700858

Page 2

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.

Page 3

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

Page 4

Table of Contents

Page

SAFETY PRECAUTIONS

TABLE OF CONTENTS

1. OPERATING RANGE

2. SPECIFICATIONS

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

3. DIMENSIONAL DATA

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

5. PERFORMANCE DATA

5-1. Te mperature Charts 5-2. Cooling Capacity 5-3. Heating Capacity 5-4. Air Throw Distance Charts

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19 23 27 29

6. ELECTRICAL DATA

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

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

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31 33

35 39

41 41 44 48 50

Page 5

9. CHECKING ELECTRICAL COMPONENTS

9-1. Measurement of Insulation Resistance 9-2. Checking Continuity of Fuse on PCB Ass'y

10. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

10-1. Characteristics of New Refrigerant R410A 10-2. Checklist before Servicing 10-3. Tools Specifically for R410A 10-4. Tubing Installation Procedures 10-5. In Case of Compressor Malfunction 10-6. In Case Refrigerant is Leaking 10-7. Charging Additional Refrigerant 10-8. Retro-Fitting Existing Systems

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Page

51 52

53 54 55 55 56 58 59 59

APPENDIX A INSTRUCTION MANUAL

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APPENDIX B INSTALLAION INSTRUCTIONS

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A-1

A-2

Page 6

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. _

D.B. / 0 °F W.B.

Page 7

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit KHS3082 Outdoor Unit CH3082

< 230V >

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

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

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

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

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

Vertical

dB-A dB-A

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

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

( 14,000 to 33,000 ) ( 4.1 to 9.7 )

16.5

3,290

( 5.0 to 16.5 ) ( 1,000 to 3,290 )

15.3

3,070

( 4.5 to 15.3 ) ( 900 to 3,070 )

30,600

9.0

33,000

9.7

( 10,900 to 30,600 ) ( 3.2 to 9.0 )

Shipping Volume

Cooling Heating

18,600 12,000

Net Shipping

Package Dimensions

Weight

Height × Width × Depth

Ibs (kg) Ibs (kg)

cu.ft (m

)

(mm)

inch

(mm)

230V Single-Phase 60Hz

inch

187 to 253

Dimensions & Weight

(*Qt = Quiet mode) Refrigerant Tubing Connections

Unit Dimensions

Operation Sound

Electrical Rating

Sensible Capacity Latent Capacity

WPower Input

V A

Available Voltage Range Running Amperes

Refrigerant Tube Kit / Accessories

Narrow tube Wide tube

Refrigerant inch (mm) Tube Diameter inch (mm)

32.0

39.7

4.59

(14.5) (18.0) (0.13)

185.2

207.2

15.88

(84.0) (94.0) (0.45)

42-3/8 × 40 × 16-3/8

(1,076 × 1,016 × 416)

(300 × 1,065 × 230) (910 × 940 × 340)

12-7/32 × 44-7/8 × 14-31/32

(310 × 1,140 × 380)

Outdoor UnitIndoor Unit

11-13/16 × 41-15/16 × 9-1/16 35-13/16 × 37-1/32 × 13-3/8

3/8 (9.52)

5/8 (15.88)

ft (m)Max. allowable tubing length at shipment

Flare Type

164 (50)

49 / 44 / 39 / 3249 / 44 / 39 / 32

5555

R410A / 6.5 (2,950)

Electric Expansion Valve

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Manual

Auto

Timer

Indoor / OutdoorFan Speeds

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

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

Airflow Direction (Indoor) Horizontal

Controls / Temperature Control Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Features

HSPF Compressor Locked Rotor Amperes

BTU/Wh

Optional / Air Clean Filter

BTU/h

Performance

- 9.0

%Power Factor 87 87

A 31.0

Voltage Rating

BTU/h

Total Capacity

BTU/h

SEER BTU/Wh 16.0 -

630 (1,070) 671 (1,140)Air Circulation (High) ft3/min (m3/h)

9.57 -Moisture Removal (High) Pints/h

COP W/W - 3.15

EER BTU/h/W 9.30 -

Fuse or Circuit Breaker Capacity A35

Page 8

Indoor Unit KHS3082 Outdoor Unit CH3082

Voltage Rating

Total Capacity

Sensible Capacity Latent Capacity

Performance

Air Circulation (High) ft3/min (m3/h) Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

EER BTU/h/W COP W/W SEER BTU/Wh HSPF

Electrical Rating

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

Indoor / OutdoorFan Speeds

Airflow Direction (Indoor) Horizontal

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

Features

Refrigerant Control Operation Sound (*Qt = Quiet mode) Refrigerant Tubing Connections

Refrigerant inch (mm) Tube Diameter inch (mm) Refrigerant Tube Kit / Accessories

Unit Dimensions

Height × Width × Depth

Package Dimensions

Height × Width × Depth

Weight

Dimensions & Weight

Shipping Volume

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

Narrow tube Wide tube

Net Shipping

BTU/h

BTU/h BTU/h

BTU/Wh

Vertical

dB-A dB-A

ft (m)Max. allowable tubing length at shipment

inch

(mm)

inch

(mm) Ibs (kg) Ibs (kg)

cu.ft (m

208V Single-Phase 60Hz

Cooling Heating

30,600

9.0

( 10,900 to 30,600 ) ( 3.2 to 9.0 )

18,600 12,000

33,000

( 14,000 to 33,000 ) ( 4.1 to 9.7 )

9.7

630 (1,070) 671 (1,140)

9.57 V A

18.0

( 5.0 to 18.0 )

WPower Input

3,290

%Power Factor

( 1,000 to 3,290 )

88 88

187 to 253

16.8

3,070

( 4.5 to 16.8 ) ( 900 to 3,070 )

9.30 -

- 3.15

16.0 -

- 9.0

31.0 35

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

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

Manual

Auto

Washable, Anti-Mold

DC Twin Rotary (Inverter)

R410A / 6.5 (2,950)

Electric Expansion Valve

49 / 44 / 39 / 3249 / 44 / 39 / 32

5555

Flare Type

164 (50)

3/8 (9.52)

5/8 (15.88)

Optional / Air Clean Filter

Outdoor UnitIndoor Unit

11-13/16 × 41-15/16 × 9-1/16 35-13/16 × 37-1/32 × 13-3/8

(300 × 1,065 × 230) (910 × 940 × 340)

12-7/32 × 44-7/8 × 14-31/32

(310 × 1,140 × 380)

32.0

(14.5)

39.7

(18.0)

)

4.59

(0.13)

42-3/8 × 40 × 16-3/8

(1,076 × 1,016 × 416)

185.2

(84.0)

207.2

(94.0)

15.88

(0.45)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

< 208V >

Remarks: Rating conditions are:

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

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

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

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

Page 9

Indoor Unit KHS3682 Outdoor Unit CH3682

Voltage Rating

Total Capacity

Sensible Capacity Latent Capacity

Performance

Air Circulation (High) ft3/min (m3/h) Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

EER BTU/h/W COP W/W SEER BTU/Wh HSPF

Electrical Rating

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

Indoor / OutdoorFan Speeds

Airflow Direction (Indoor) Horizontal

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

Features

Refrigerant Control Operation Sound (*Qt = Quiet mode) Refrigerant Tubing Connections

Refrigerant inch (mm) Tube Diameter inch (mm) Refrigerant Tube Kit / Accessories

Unit Dimensions

Height × Width × Depth

Package Dimensions

Height × Width × Depth

Weight

Dimensions & Weight

Shipping Volume

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

Narrow tube Wide tube

Net Shipping

BTU/h

BTU/h BTU/h

BTU/Wh

Vertical

dB-A dB-A

ft (m)Max. allowable tubing length at shipment

inch

(mm)

inch

(mm) Ibs (kg) Ibs (kg)

cu.ft (m

230V Single-Phase 60Hz

Cooling Heating

34,000

10.0

( 10,900 to 34,000 ) ( 3.2 to 10.0 )

20,700 13,300

36,000

( 14,000 to 36,000 ) ( 4.1 to 10.5 )

10.5

630 (1,070) 671 (1,140)

10.64 V A

20.0

( 5.0 to 20.0 )

WPower Input

4,000

%Power Factor

( 1,000 to 4,000 )

87 87

187 to 253

18.2

3,650

( 4.5 to 18.2 ) ( 900 to 3,650 )

8.50 -

- 2.89

16.0 -

- 9.0

31.0 45

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

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

Manual

Auto

Washable, Anti-Mold

DC Twin Rotary (Inverter)

R410A / 6.5 (2,950)

Electric Expansion Valve

49 / 44 / 39 / 3249 / 44 / 39 / 32

5655

Flare Type

164 (50)

3/8 (9.52)

5/8 (15.88)

Optional / Air Clean Filter

Outdoor UnitIndoor Unit

11-13/16 × 41-15/16 × 9-1/16 35-13/16 × 37-1/32 × 13-3/8

(300 × 1,065 × 230) (910 × 940 × 340)

12-7/32 × 44-7/8 × 14-31/32

(310 × 1,140 × 380)

32.0

(14.5)

39.7

(18.0)

)

4.59

(0.13)

42-3/8 × 40 × 16-3/8

(1,076 × 1,016 × 416)

185.2

(84.0)

207.2

(94.0)

15.88

(0.45)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

< 230V >

Remarks: Rating conditions are:

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

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

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

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

Page 10

Indoor Unit KHS3682 Outdoor Unit CH3682

Voltage Rating

Total Capacity

Sensible Capacity Latent Capacity

Performance

Air Circulation (High) ft3/min (m3/h) Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

EER BTU/h/W COP W/W SEER BTU/Wh HSPF

Electrical Rating

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

Indoor / OutdoorFan Speeds

Airflow Direction (Indoor) Horizontal

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

Features

Refrigerant Control Operation Sound (*Qt = Quiet mode) Refrigerant Tubing Connections

Refrigerant inch (mm) Tube Diameter inch (mm) Refrigerant Tube Kit / Accessories

Unit Dimensions

Height × Width × Depth

Package Dimensions

Height × Width × Depth

Weight

Dimensions & Weight

Shipping Volume

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

Narrow tube Wide tube

Net Shipping

BTU/h

BTU/h BTU/h

BTU/Wh

Vertical

dB-A dB-A

ft (m)Max. allowable tubing length at shipment

inch

(mm)

inch

(mm) Ibs (kg) Ibs (kg)

cu.ft (m

208V Single-Phase 60Hz

Cooling Heating

34,000

10.0

( 10,900 to 34,000 ) ( 3.2 to 10.0 )

20,700 13,300

36,000

( 14,000 to 36,000 ) ( 4.1 to 10.5 )

10.5

630 (1,070) 671 (1,140)

10.64 V A

21.9

( 5.0 to 21.9 )

WPower Input

4,000

%Power Factor

( 1,000 to 4,000 )

88 88

187 to 253

19.9

3,650

( 4.5 to 19.9 ) ( 900 to 3,650 )

8.50 -

- 2.89

16.0 -

- 9.0

31.0 45

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

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

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

Manual

Auto

Washable, Anti-Mold

DC Twin Rotary (Inverter)

R410A / 6.5 (2,950)

Electric Expansion Valve

49 / 44 / 39 / 3249 / 44 / 39 / 32

5655

Flare Type

164 (50)

3/8 (9.52)

5/8 (15.88)

Optional / Air Clean Filter

Outdoor UnitIndoor Unit

11-13/16 × 41-15/16 × 9-1/16 35-13/16 × 37-1/32 × 13-3/8

(300 × 1,065 × 230) (910 × 940 × 340)

12-7/32 × 44-7/8 × 14-31/32

(310 × 1,140 × 380)

32.0

(14.5)

39.7

(18.0)

)

4.59

(0.13)

42-3/8 × 40 × 16-3/8

(1,076 × 1,016 × 416)

185.2

(84.0)

207.2

(94.0)

15.88

(0.45)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

< 208V >

Remarks: Rating conditions are:

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

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

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

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

Page 11

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit KHS3082

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-KHS3082

Microprocessor

250V 3A

Remote Control Unit

Fan

Type Q'ty ... Dia. and Length

Fan Motor

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

Rough Measure RPM (Cool / Heat)

Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over-Current Protection Over-Heat Protection

Run Capacitor Micro F

Flap Motor

Type Stepping Motor

Model

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

inch (mm)

Ohm

VAC

1 ... D3-15/16 / L32-1 (D100/L838)

Each Pair of Terminal : 200 +/- 7%

RCS-8HVPULS4U

SIC-39CVL-D847-10 ... 1

Internal Controller

24BYJ48-1256

Cross-Flow

DC Motor

1,370 / 1,450

Yes Yes

DC 12V

Heat Exchanger Coil

Coil

Rows Fins Per inch

(m2)

Aluminum Plate Fin / Copper Tube

1 and 2

19.5

4.55 (0.423) Face Area

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Page 12

Indoor Unit KHS3682

Control PCB

Part No.

Controls

Control Circuit Fuse

CB-KHS3682

Microprocessor

250V 3A

Remote Control Unit

Fan

Type Q'ty ... Dia. and Length

Fan Motor

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

Rough Measure RPM (Cool / Heat)

Nominal Output Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type

Over-Current Protection Over-Heat Protection

Run Capacitor Micro F

Flap Motor

Type

Model

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

inch (mm)

Ohm

VAC

RCS-8HVPULS4U

Cross-Flow

1 ... D3-15/16 / L32-1 (D100/L838)

DC Motor

SIC-39CVL-D847-10 ... 1

1,370 / 1,450

Internal Controller

Yes Yes

Stepping Motor 24BYJ48-1256

DC 12V

Each Pair of Terminal : 200 +/- 7%

Heat Exchanger Coil

Coil

Rows Fins Per inch

Face Area

(m2)

Aluminum Plate Fin / Copper Tube

1 and 2

19.5

4.55 (0.423)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Page 13

2-2-2. Outdoor Unit

Outdoor Unit CH3082

P.C.Board

Part No.

Controls

Circuit Fuse

Compressor

Type

Compressor Model / Nominal Output Compressor Oil ... Amount Coil Resistance (Ambient Temp. 77 °F (25 °C))

Safety Device

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

Operation cut-off control in abnormal ambient Temp.

Overload Relay

Operation Temp.

Run Capacitor

Crankcase Heater

Fan

Type

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

Pints (cc)

Ohm

Model

Micro F

VAC

Control P.C.B

CR-CH3082-F

Microprocessor

400V 3.5A

Noise Filer P.C.B

POW-CH3082-B1

250V 25A

DC Twin Rotary (Hermetic)

C-9RVN273H0H / 2,250W

FV68S ... 2.98 (1,400)

T - R :

0.169

T - S :

0.169

R - S :

0.169

Yes Yes Yes

CS-7L110

Open : 230 °F (110 °C), Close : 203 °F (95 °C)

230V 30W

Propeller

1 ... D19-9/32 (D490)

H.I.C.Board

HIC-CH3072R-C1

Fan Motor

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

Rough Measure RPM (Cool / Heat)

Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

SIC-71FW-D8120-4A ... 1

Ohm

DC Motor

750 / 750

142

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor

Micro F

VAC

Internal Controller

Yes Yes

Heat Exchanger Coil

Coil

Rows Fins per inch

Face Area

(m2)

Aluminum Plate Fin / Copper Tube

21.2

8.05 (0.748)

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Page 14

Outdoor Unit CH3682

P.C.Board

Part No.

Controls

Circuit Fuse

Compressor

Type

Compressor Model / Nominal Output Compressor Oil ... Amount Coil Resistance (Ambient Temp. 77 °F (25 °C))

Safety Device

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

Operation cut-off control in abnormal ambient Temp.

Overload Relay

Operation Temp.

Run Capacitor

Crankcase Heater

Fan

Type

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

Pints (cc)

Ohm

Model

Micro F

VAC

Control P.C.B

CR-CH3682-F

Microprocessor

400V 3.5A

Noise Filer P.C.B

POW-CH3082-B1

250V 25A

DC Twin Rotary (Hermetic)

C-9RVN273H0H / 2,500W

FV68S ... 2.98 (1,400)

T - R :

0.169

T - S :

0.169

R - S :

0.169

Yes Yes Yes

CS-7L110

Open : 230 °F (110 °C), Close : 203 °F (95 °C)

230V 30W

Propeller

1 ... D19-9/32 (D490)

H.I.C.Board

HIC-CH3072R-C1

Fan Motor

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

Rough Measure RPM (Cool / Heat)

Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

SIC-71FW-D8120-4A ... 1

Ohm

DC Motor

750 / 750

142

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor

Micro F

VAC

Internal Controller

Yes Yes

Heat Exchanger Coil

Coil

Rows Fins per inch

Face Area

(m2)

Aluminum Plate Fin / Copper Tube

21.2

8.05 (0.748)

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Page 15

2-3. Other Component Specifications

Indoor Unit KHS3082  KHS3682 Outdoor Unit CH3082

 CH3682

• Indoor air temp sensor

(Model:KTEC-35-S121-1)

• Indoor heat exchanger sensor

(Model:PTM-D51H-S6-1)

• Compressor temp sensor

(Model:TKS335B)

Resistance (k ohm)

59 68 77 86 95 104

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

Temperature °F (°C)

200

180

160

140

120

100

Resistance (k ohm)

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

Temperature °F (°C)

• Outdoor air temp sensor

(Model:TKS295B)

• Outdoor heat exchanger sensor

(Model:TKS334B)

• Heat sink temp sensor (HIC Board)

(Model:TKS316B)

Resistance (k ohm)

4514 23 32 41 50 59 68

(

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

Temperature °F (°C)

Page 16

3. DIMENSIONAL DATA

Indoor Unit  KHS3082  KHS3682

5-9/16

2-3/4

1-9/32

4-9/16

5-27/32

Drain hose dia. 23/32" (18)

9-3/32

1-15/32

dia. 3-5/32

5-3/16

1-7/8

16-11/32

22-3/8

17-21/32

2-3/32 25/32

7-23/32

1-27/32 1-3/32

7-25/32

4-9/16

11-13/16 (300)

5/16 2-3/4

2-3/8

3-3/4 3-3/4 7-7/8

Narrow tube dia. 3/8" (9.52)

Wide tube dia. 5/8" (15.88)

9-1/16 (230) (3/32)

15-1/8 17-23/32

5-1/2

2-3/8

2-11/16

3-3/8

2-5/8

23/32

1-7/8

11-13/16

16-11/32

6-7/32

17-5/16

19-9/16

dia. 3-5/32

41-15/16 (1065)

7/16

2-5/8

Unit: inch(mm) (852-0-0010-19600-0)

Page 17

Outdoor Unit CH3082

 CH3682

Tubing outlet

7/16

1-3/16

2-5/32

Unit: inch(mm)

(852-0-0010-19400-1)

2-ID:1-1/4 holes (holes for drain)

Of the 4-ID:1-1/4 holes, use 1 of 2 holes

specified for drain use to install the port.

Use rubber plugs to seal the remaining 3 holes.

16-5/32

14-31/32

13/32

13-3/8 (340)

AIR INTAKE

AIR DISCHARGE

Refrigerant tubing joint (Liquid tube)

Flare connection dia.3/8" (9.52)

Refrigerant tubing joint (Gas tube)

Flare connection dia.5/8" (15.88)

21/32

31/32

1-3/16

1-27/32

Tubing outlet

1-3/16

1-27/32

3/4

4-3/4

6-23/32 19/32

14-11/32

13-9/32

2-25/32

4-11/32

2-25/32

1-15/16

2-3/8

Wiring outlet

(knock-out holes

dia.1-3/8, 1-3/32, 7/8, 1/2)

3/4

2-17/32

3-3/8

1-15/16

2-5/32

2-17/32

1/2

2-3/8

2-15/16

2-15/168-5/84-1/8

AIR INTAKE

6-11/6 25-31/32 4-11/32

AIR INTAKE

1-1/32

11-13/32

1/2

AIR DISCHARGE

37-1/32 (940)

35-13/16 (910)

23/32

Tubing outlet

Wiring outlet

(knock-out holes

dia.1-3/8, 1-3/32, 7/8, 1/2)

Page 18

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit KHS3082  KHS3682

Indoor unit Outdoor unit

(15.88 mm)

Heat exchanger

Narrow tube

Wide tube

O.D 5/8"

O.D.

3/8"

(9.52 mm)

Outdoor Unit CH3082

 CH3682

Sub Wide tube service valve

Muffler

Narrow tube service valve

Strainer

Accumulator

4-way valve

Main Accumulator

High pressure

switch

H.P.

Electric

expansion

valve

Compressor

Heat exchanger

Cooling cycle (Defrosting cycle)

Heating cycle

Page 19

5. PERFORMANCE DATA

5-1. Temperature Charts

Indoor Unit KHS3082 Outdoor Unit CH3082

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

(1) Low pressure performance chart

174

(1.2)

159

psig(MPaG)

(1.1)

145

(1.0)

131

(0.9)

117

(0.8)

104

(0.7)

Low pressure at wide tube service valve

-4

(-20)

(-15)

(-10)

(-5)

(2) Operating current performance chart

Operating current (A)

32 (0)

41 (5)

(10)

Outdoor inlet air D.B. temp.°F(°C)

(15)

F (30

F (27

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

(20)

Indoor Air Temp.86°F (30°C)

Indoor Air Temp.86

80°F (27°C)

F (24

75°F (24°C)

(25)

F (30°

F (27

80°F (27°C)

F (24

75°F (24°C)

C) C)

(30)

Hi FanLo fan

(35)

Hi FanLo fan

104 (40)

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

(15)

(20)

(25)

(30)

(35)

Outdoor inlet air D.B. temp.°F(°C)

(3) Indoor discharge air performance chart

64.4 (18)

°C)

60.8 (16)

57.2 (14)

53.6 (12)

50.0 (10)

46.4 (8)

42.8 (6)

Indoor Air Tem

°F (30

p.86

p.86°F (30°C

F (27

80°F (27°C

F (24

75°F (24°C

Indoor discharge air temperature °F(

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

(15)

(20)

(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

)

(30)

(35)

104 (40)

Page 20

Indoor Unit KHS3082 Outdoor Unit CH3082

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

(1) High pressure performance chart

F (23

°F (23°C)

494

(3.4)

psig (MPaG)

421

(2.9)

348

(2.4)

275

High pressure at wide tube service valve

(1.9)

(2) Operating current performance chart

Indoor air temp.73

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

Outdoor inlet air D.B. temp. °F(°C)

°C)

F (

°F (

°C)

F (

°F (

Operating current (A)

(–5)32(0)41(5)

(3) Indoor discharge air performance chart

131(55)

122(50)

113(45)

104(40)

95(35)

86(30)

°C)

°F (23

°F (23°C)

°C)

°F (

°C)

Indoor air temp.73

F (

°F (

(10)59(15)68(20)77(25)

Outdoor inlet air D.B. temp. °F(°C)

F (23

°F (23°C)

p.73

Indoor air tem

p.73

°C)

F (

°F (

°C)

F (

°F (

Indoor discharge air temperature °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 "7-2. Overload prevention during heating.")

(–5)32(0)41(5)50(10)

Outdoor inlet air D.B. temp. °F(°C)

(15)68(20)77(25)

Page 21

Indoor Unit KHS3682 Outdoor Unit CH3682

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

(1) Low pressure performance chart

174

(1.2)

159

psig(MPaG)

(1.1)

145

(1.0)

131

(0.9)

117

(0.8)

104

(0.7)

Low pressure at wide tube service valve

-4

(-20)

(-15)

(-10)

(-5)

(2) Operating current performance chart

Operating current (A)

32 (0)

41 (5)

(10)

Outdoor inlet air D.B. temp.°F(°C)

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

(15)

(20)

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

F (30

F (27

80°F (27°C

F (24

75°F (24°C)

(25)

F (30

F (27

80°F (27°C)

F (24

75°F (24°C)

Hi FanLo fan

)

°C)

(30)

(35)

Hi FanLo fan

104 (40)

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

(15)

(20)

(25)

(30)

(35)

Outdoor inlet air D.B. temp.°F(°C)

(3) Indoor discharge air performance chart

64.4 (18)

°C)

60.8 (16)

57.2 (14)

53.6 (12)

50.0 (10)

46.4 (8)

42.8 (6)

F (30

Indoor Air Temp.86

Indoor Air Temp.86°F (30°C)

F (27°

80°F (27°C)

F (24

75°F (24°C)

°C)

Hi FanLo fan

Indoor discharge air temperature °F(

-4

(-20)

(-15)

(-10)

(-5)

32 (0)

41 (5)

(10)

(15)

(20)

(25)

(30)

(35)

Outdoor inlet air D.B. temp.°F(°C)

NOTE

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

104 (40)

Page 22

Indoor Unit KHS3682 Outdoor Unit CH3682

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

(1) High pressure performance chart

494

(3.4)

psig (MPaG)

421

(2.9)

348

(2.4)

275

High pressure at wide tube service valve

(1.9)

(2) Operating current performance chart

Indoor air temp.73

(–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)

°C)

23°

23°C)

F (

°F (

Operating current (A)

(–5)32(0)41(5)

(3) Indoor discharge air performance chart

131(55)

122(50)

113(45)

104(40)

95(35)

86(30)

23°C)

F (

°F (

°C)

Indoor air temp.73

F (

°F (

°C)

F (

°F (

(10)59(15)68(20)77(25)

Outdoor inlet air D.B. temp. °F(°C)

23°

23°C)

F (

°F (

°C)

Indoor air temp.73

F (

°F (

°C)

F (

°F (

Indoor discharge air temperature °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 "7-2. Overload prevention during heating.")

(–5)32(0)41(5)50(10)

Outdoor inlet air D.B. temp. °F(°C)

(15)68(20)77(25)

Page 23

5-2. Cooling Capacity

Indoor Unit : KHS3082

Outdoor Unit : CH3082

Power Supply : 230V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

RATING CAPACITY: 30,600 BTU/h AIR FLOW RATE: 630CFM

INDOOR OUTDOOR

ENT. TEMP.

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

59 76 (24.4) SHC 23,470 23,470 23,350 23,230 23,230 22,980 22,860

(15.0) 80 (26.7) SHC 25,920 25,920 25,790 25,790 25,670 25,430 25,300

63 76 (24.4) SHC 20,050 20,050 19,920 19,920 19,800 19,800 19,680

(17.2) 80 (26.7) SHC 22,490 22,490 22,370 22,370 22,370 22,250 22,120

F (oC)AMBIENT TEMP. oF (oC)

TC 30,120 30,060 29,930 29,780 29,590 29,330 29,070

72 (22.2) SHC 21,150 21,150 21,020 20,900 20,780 20,660 20,530

84 (28.9) SHC 28,240 28,240 28,120 28,120 27,990 27,870 27,630 88 (31.1) SHC 30,120 30,060 29,930 29,780 29,590 29,330 29,070

TC 30,390 30,360 30,270 30,170 30,040 29,820 29,610

72 (22.2) SHC 17,720 17,720 17,600 17,600 17,480 17,360 17,360

84 (28.9) SHC 24,820 24,820 24,820 24,690 24,690 24,570 24,450 88 (31.1) SHC 27,140 27,140 27,140 27,020 27,020 26,890 26,770

TC 30,490 30,480 30,450 30,400 30,330 30,160 30,020

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

72 (22.2) SHC 14,180 14,180 14,180 14,180 14,180 14,050 14,050

67 76 (24.4) SHC 16,500 16,500 16,500 16,500 16,500 16,380 16,380

(19.4) 80 (26.7) SHC 19,070 18,940 18,940 18,940 18,940 18,820 18,820

84 (28.9) SHC 21,390 21,390 21,390 21,270 21,270 21,150 21,150 88 (31.1) SHC 23,710 23,710 23,710 23,710 23,590 23

TC 30,370 30,380 30,410 30,430 30,420 30,310 30,250

72 (22.2) SHC 10,510 10,510 10,510 10,630 10,630 10,510 10,510

71 76 (24.4) SHC 12,950 12,950 12,950 12,950 12,950 12,830 12,830

(21.7) 80 (26.7) SHC 15,400 15,400 15,400 15,400 15,400 15,280 15,280

84 (28.9) SHC 17,720 17,720 17,720 17,720 17,720 17,720 17,600 88 (31.1) SHC 20,050 20,050 20,050 20,050 20,050 20,050 20,050

TC 30,030 30,080 30,170 30,240 30,310 30,250 30,270

75 76 (24.4) SHC 9,410 9,4109,410 9,5309,530 9,530 9,530

(23.9) 80 (26.7) SHC 11,850 11,850 11,850 11,970 11,970 11,970 11,970

84 (28.9) SHC 14,180 14,180 14,300 14,300 14,300 14,300 14,300 88 (31.1) SHC 16,500 16,620 16,620 16,620 16,620 16,620 16,620

,590 23,470

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 24

< Cooling Capacity >

RATING CAPACITY: 30,600 BTU/hAIR FLOW RATE: 630 CFM

INDOOR OUTDOOR

ENT. TEMP.

W.B. D.B. 65758595105 115

59 76 (24.4) SHC 23,710 23,350 22,98022,610 20,66016,990

(15.0) 80 (26.7)SHC 26,280 25,790 25,43025,060 23,100 17,310

6376 (24.4) SHC20,66020,29019,920 19,680 17,480 14,050

(17.2) 80 (26.7)SHC 23,100 22,740 22,370 22,120 20,050 16,500

6776 (24.4) SHC17,48017,11016,870 16,620 14,420 11,240

(19.4) 80 (26.7)SHC 19,920 19,56019,310 19,070 16,870 13,690

F (oC) AMBIENT TEMP. oF (oC)

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

TC 30,650 29,970 29,19028,600 24,890 17,310

72 (22.2) SHC 21,390 21,020 20,66020,290 18,330 14,660

84 (28.9) SHC 28,610 28,240 27,75027,380 24,890 17,310 88 (31.1) SHC30,650 29,970 29,190 28,600 24,890 17,310

TC 31,580 30,910 30,16029,630 25,270 17,560

72 (22.2) SHC 18,330 17,970 17,600 17,360 15,150 11,730

84 (28.9) SHC25,43025,06024,690 24,450 22,370 17,560 88 (31.1) SHC27,75027,51027,020 26,770 24,690 17,560

TC 32,420 31,780 31,050#30,600 25,550 17,760

72 (22.2) SHC15,15014,79014,420 14,300 12,100 8,920

84 (28.9) SHC22,25022,00021,640 21,390 19,190 16,010 88 (31.1) SHC24,57024,33023,96023,71021,51017,

TC 33,130 32,540 31,84031,490 25,710 17,880

760

72 (22.2) SHC11,73011,48011,120 11,000 8,670 5,860

71 76 (24.4) SHC14,05013,81013,440 13,320 11,120 8,310

(21.7) 80 (26.7)SHC 16,500 16,250 15,890 15,770 13,56010,750

84 (28.9) SHC18,82018,58018,330 18,210 15,890 13,070 88 (31.1) SHC21,15020,90020,66020,53018,21015,400

75 76 (24.4) SHC10,75010,51010,26010,1407,940 5,370

(23.9) 80 (26.7)SHC 13,200 12,950 12,710 12,590 10,380 7,820

84 (28.9) SHC15,52015,28015,030 15,030 12,710 10,140 88 (31.1) SHC17,84017,72017,480 17,36015,03012,590

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

NOTE

Rating conditions (#)

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.

TC 33,630 33,090 32,43032,190 25,730 17,900

: 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.

Page 25

Indoor Unit : KHS3682

Outdoor Unit : CH3682

Power Supply : 230V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

RATING CAPACITY: 34,000BTU/h AIR FLOW RATE: 630CFM

INDOOR OUTDOOR

ENT. TEMP.

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

59 76 (24.4) SHC 23,960 23,840 23,840 23,840 23,710 23,590 23,470

(15.0) 80 (26.7) SHC 26,400 26,400 26,280 26,280 26,160 26,040 25,920

63 76 (24.4) SHC 20,410 20,410 20,290 20,290 20,290 20,170 20,170

(17.2) 80 (26.7) SHC 22,860 22,860 22,740 22,740 22,740 22,610 22,610

F (oC) AMBIENT TEMP. oF (oC)

TC 30,900 30,870 30,800 30,710 30,590 30,400 30,210

72 (22.2) SHC 21,510 21,510 21,510 21,510 21,390 21,270 21,150

84 (28.9) SHC 28,730 28,730 28,610 28,610 28,480 28,480 28,360 88 (31.1) SHC 30,900 30,870 30,800 30,710 30,590 30,400 30,210

TC 31,010 31,010 30,990 30,950 30,890 30,750 30,620

72 (22.2) SHC 17,970 17,970 17,970 17,970 17,970 17,840 17,840

84 (28.9) SHC 25,180 25,180 25,180 25,060 25,060 25,060 24,940 88 (31.1) SHC 27,510 27,510 27,510 27,510 27,380 27,380 27,260

TC 30,910 30,940 30,980 31,000 31,010 30,930 30,880

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

72 (22.2) SHC 14,420 14,420 14,420 14,420 14,420 14,420 14,420

67 76 (24.4) SHC 16,740 16,740 16,740 16,740 16,740 16,740 16,740

(19.4) 80 (26.7) SHC 19,190 19,190 19,190 19,190 19,190 19,190 19,190

84 (28.9) SHC 21,510 21,510 21,640 21,640 21,640 21,510 21,510 88 (31.1) SHC 23,840 23,960 23,960 23,960 23,960 23,960 23,840

TC 30,570 30,620 30,730 30,820 30,910 30,900 30,930

72 (22.2) SHC 10,630 10,630 10

71 76 (24.4) SHC 12,950 12,950 13,070 13,070 13,070 13,070 13,070

(21.7) 80 (26.7) SHC 15,400 15,400 15,520 15,520 15,520 15,520 15,520

84 (28.9) SHC 17,720 17,840 17,840 17,840 17,970 17,970 17,970 88 (31.1) SHC 20,170 20,170 20,170 20,170 20,290 20,290 20,290

TC 30,010 30,090 30,260 30,430 30,590 30,650 30,770

75 76 (24.4) SHC 9,410 9,4109,530 9,530 9,650 9,6509,650

(23.9) 80 (26.7) SHC 11,850 11,850 11,970 11,970 12,100 12,100 12,100

84 (28.9) SHC 14,180 14,180 14,300 14,300 14,420 14,420 14,420 88 (31.1) SHC 16,500 16,620 16,620 16,740 16,740 16,740 16,870

,750 10,750 10,750 10,750 10,750

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 26

Indoor Unit : KHS3682

Outdoor Unit : CH3682

Power Supply : 230V Single Phase 60Hz

< Cooling Capacity >

RATING CAPACITY: 34,000BTU/h AIR FLOW RATE: 630CFM

INDOOR OUTDOOR

ENT. TEMP.

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

5976(24.4)SHC 25,790 25,430 24,940 24,570 20,530 16,740

(15.0)80(26.7)SHC 28,240 27,870 27,380 27,020 22,980 16,770

63 76 (24.4) SHC 22,490 22,120 21,760 21,390 17,360 13,810

(17.2) 80 (26.7) SHC 24,940 24,570 24,200 23,840 19,800 16,250

F (oC) AMBIENT TEMP. oF (oC)

TC 34,170 33,480 32,690 32,110 24,650 16,770

72 (22.2) SHC 23,470 23,100 22,610 22,25018,21014,420

84 (28.9) SHC 30,560 30,200 29,710 29,460 24,65016,770 88 (31.1) SHC 33,010 32,520 32,030 31,790 24,65016,770

TC 35,010 34,360 33,600 33,100 24,85016,910

72 (22.2) SHC 20,170 19,800 19,310 19,070 15,030 11,480

84 (28.9) SHC 27,260 26,890 26,530 26,280 22,120 16,910 88 (31.1) SHC 29,580 29,220 28,85028,610 24,45016,910

TC 35,720 35,120 34,400 #34,000 24,930 16,970

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

72 (22.2) SHC 16,620 16,380 16,010 15,890 11,730 8,670

67 76 (24.4) SHC 19,070 18,700 18,330 18,210 14,180 11,000

(19.4) 80 (26.7) SHC 21,510 21,15020,90020,660 16,620 13,440

84 (28.9) SHC 23,840 23,590 23,230 22,980 18,940 15,770 88 (31.1) SHC 26,160 25,920 25,55025,300 21,270 16,970

TC 36,270 35,710 35,040 34,780 24,870 16,95

72 (22.2) SHC 13,070 12,830 12,460 12,340 8,4305,610

71 76 (24.4) SHC15,400 15,15014,79014,790 10,7507,940

(21.7) 80 (26.7) SHC 17,840 17,600 17,360 17,230 13,200 10,380

84 (28.9) SHC 20,170 19,920 19,680 19,560 15,520 12,710 88 (31.1) SHC 22,490 22,25022,00021,880 17,840 15,030

TC 36,560 36,070 35,45034,630 24,680 16,830

75 76 (24.4) SHC 11,850 11,610 11,360 11,120 7,570 5,130

(23.9) 80 (26.7) SHC 14,300 14,05013,81013,560 10,020 7,570

84 (28.9) SHC 16,620 16,500 16,25015,890 12,340 9,900 88 (31.1) SHC 18,940 18,820 18,580 18,210 14,660 12,220

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

5-3. Heating Capacity

Indoor Unit : KHS3082

Outdoor Unit : CH3082

Power Supply : 230V Single Phase 60Hz

< Heating Capacity >

RATING CAPACITY: 33,000BTU/h AIR FLOW RATE: 671 CFM

OUTDOOR INDOOR

ENT. TEMP.

13 (-10.6) TH 21,640 21,710 21,770 21,810 21,840

18 (-7.8) TH 23,320 23,390 23,450 23,500 23,530

23 (-5.0) TH 25,100 25,170 25,230 25,280 25,310

F (oC)AMBIENT TEMP. oF (oC)

W.B. 60 65 70 75 80

0(-17.8) TH 18,060 18,120 18,170 18,210 18,240

3(-16.1) TH 18,670 18,730 18,780 18,820 18,850

8(-13.3) TH 20,120 20,190 20,240 20,280 20,320

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

28 (-2.2) TH 26,960 27,030 27,090 27,140 27,160

33 (0.6)TH 28,900 28,970 29,030 29,070 29,090

38 (3.3)TH 30,830 30,900 30,950 30,990 30,500

43 (6.1)TH 32,880 32,950 #33,000 33,030 30,830

48 (8.9)TH 34,980 35,050 35,090 35,120 31,060

53 (11.7) TH 37,120 37,180 37,220 35,460 31,180

58 (14.4) TH 39,210 39,260 39,280 35,480 31,180

63 (17.2) TH 41,380 41,410 40,090 35,340 31,050

65 (18.3) TH 42,230 42,260 39,980 35,250 30,960

TH : Total Heating Capacity (BTU/h)

NOTE

Rating conditions (#)

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

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

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

Page 28

Indoor Unit : KHS3682

Outdoor Unit : CH3682

Power Supply : 230V Single Phase 60Hz

< Heating Capacity >

RATING CAPACITY: 36,000BTU/h AIR FLOW RATE: 671 CFM

OUTDOORINDOOR

ENT. TEMP.

13 (-10.6) TH 23,630 23,730 23,830 23,920 23,990

18 (-7.8)TH25,44025,560 25,660 25,750 25,820

23 (-5.0)TH27,36027,480 27,590 27,680 27,140

28 (-2.2)TH29,37029,490 29,600 29,700 27,580

F (oC)AMBIENT TEMP. oF (oC)

W.B. 60 65 70 75 80

0 (-17.8) TH 19,760 19,860 19,940 20,010 20,080

3 (-16.1) TH 20,420 20,510 20,600 20,670 20,740

8 (-13.3) TH 21,990 22,090 22,180 22,260 22,330

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

33 (0.6)TH31,46031,590 31,700 31,560 27,940

38 (3.3)TH33,54033,670 33,780 31,900 28,210

43 (6.1)TH35,76035,890 # 36,000 32,150 28,410

48 (8.9)TH38,03038,160 36,450 32,300 28,520

53 (11.7) TH 40,340 40,460 36,500 32,330 28,530

58 (14.4) TH 42,580 41,040 36,420 32,230 28,430

63 (17.2) TH 44,920 40,770 36,160 32,000 28,210

65 (18.3) TH 45,520 40,610 36,020 31,870 28,090

TH : Total Heating Capacity (BTU/h)

NOTE

Rating conditions (#)

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

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

Page 29

5-4. Air Throw Distance Charts



0 5 10 15 20 25 30



0 5 10 15 20 25 30

Indoor Unit KHS3082

Cooling

Room air temp. : 80°F (26.7°C)

Fan speed : High

Axis air velocity (ft./sec.)

Vertical distance (ft.)

Horizontal distance (ft.)

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

Heating

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

Horizontal distance (ft.)

Axis air velocity (ft./sec.)

Vertical distance (ft.)

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

Page 30

Indoor Unit KHS3682



0 5 10 15 20 25 30



0 5 10 15 20 25 30

Cooling

Room air temp. :80 Fan speed : High

Axis air velocity (ft./sec.)

Vertical distance (ft.)

(26.7°C)

°F

Horizontal distance (ft.)

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

Heating

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

Horizontal distance (ft.)

Axis air velocity (ft./sec.)

Vertical distance (ft.)

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

Page 31

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor UnitKHS3082

CH3082

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 0.4

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.

16.1

3,251

Heating

Indoor Unit Outdoor Unit

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

Power input 43

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.

14.8

3,027

(2) Voltage:208V

230V

Complete Unit

16.5

3,290

Complete Unit

15.3

3,070

Cooling

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.4

Power input 39

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.

17.6

3,251

Heating

Indoor Unit Outdoor Unit

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

Power input 43

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.

16.3

3,027

208V

Complete Unit

18.0

3,290

Complete Unit

16.8

3,070

Page 32

Indoor UnitKHS3682

CH3682

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 0.4

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.

19.6

3,961

Heating

Indoor Unit Outdoor Unit

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

Power input 43

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.

17.7

3,607

(2) Voltage:208V

230V

Complete Unit

20.0

4,000

Complete Unit

18.2

3,650

Cooling

Indoor Unit Outdoor Unit

Fan Motor Fan Motor + Compressor Performance at 208V Single-phase 60Hz Rating conditions Running amp. 0.4

Power input 39

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.

21.5

3,961

Heating

Indoor Unit Outdoor Unit

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

Power input 43

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.

19.4

3,607

208V

Complete Unit

21.9

4,000

Complete Unit

19.9

3,650

Page 33

6-2. Electric Wiring Diagrams

Indoor Unit KHS3082  KHS3682

GRN/YEL

EVAPORATOR

TERMINAL BASE

BLK

WHT

RED

TO OUTDOOR UNIT

FLAP MOTOR

PL ELEC J-B

FAN MOTOR

RED

ORG

YEL

PNK

BLU

GRN/YEL

RED

BLK

WHT

YEL BLU

FLAP

5P (WHT)

GND 2P(WHT)

212

DCM

7P(BLU)

1 2

S-LINK (RAC)

4P (BLU)

AC IN COM SI

LAMP

9P(

WHT

CONTROLLER

4P(

WHT

ROOM/UV

4P (

WHT

T10

6P (BLU)

1 2 43 65

COIL

WHT

BLK

5 6 7 8 9

121

BLK

)

COIL THERMISTOR

BLK

2 3 4 4

BLK

RED

BLU

)

OPERATION SW

t°

UV ASSY

ROOM THERMISTOR

t°

IND LAMP ASSY

8FA2-5250-70400-3

Page 34

Outdoor Unit CH3082  CH3682

HEAT SINK (RADIATOR)

BRIDGE DIODE

BLK

WHT

AC1

AC2

NOISE FILTER P.C.BOARD

ACIN1

ACIN2

BLK

RED

WHT

YEL

DC+

BLU

DC-

HIC+HIC-

L1 L2 L3 L4 C1 C2

PRY

(GRN)

(WHT)

DCOUT

(ORG)

ACOUT

(BRN)

t°

YEL

TH1

YEL

TH01

(YEL)

HIC+ HIC-

CN01

1 123456789

(WHT)

3456789

HIC

BOARD

123456789

CN02

BLU

WHT

U V W

RED

(WHT)

10 10

R S

GRN/YEL

MOTOR

COMPRESSOR

OVER LOAD RELAY

BLK

TEST/MV

PRY

DCIN

ACIN

CH1

WHT

BLK

11 11 11 11

OLR

(RED)

(BLK)

HP-SW

(BLK)

(YEL)

OUTDOOR

(WHT)

COMP

COIL

(BLK)

CONTROL P.C.BOARD

(WHT)

FM1

(RED)

FM2

(RED)

CH2

WHT

BLK

RED

PRESSURE SW

HIGH

COIL

4WAY VALVE

BLK

BLK BLK

YEL YEL

GRY BLK YEL

RED

ORG

BLU

RED

ORG

WHT

BRN

t°

THERMISTOR

OUTDOOR

t°

THERMISTOR

COMPRESSOR

t°

M M

COIL THERMISTOR

FAN MOTOR MAGNETIC COIL

YEL

GRY

1 2

1 3

2 1

1 2

w w

WHT

123456789 123456789

WHT

BLK

WHT

BLK

WHT

BLK

WHT BLK

WHT WHT

GRN/YEL

HIC1

(WHT)

REACTOR

123456789

1 2

1 3

1 2

HIC2

1 2 3

1 2

1 3

2 1

(WHT)

(GRN)

(WHT)

(ORG)

(BRN)

S-COM SI

BLK

WHT

12345

TERMINAL (5P)

POWER

SUPPLY

GND

UNIT

INDOOR

WHT

CRANKCASE

HEATER

8FA2-5250-70000-1

Page 35

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 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.

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

 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.

NOTE

 The Sensor Dry operation during the Low Ambient Cooling

Mode (outside air temperature : 59°F(15°C) or lower) is as follows.

DRY A

and

DRY B

 When room temperature rises above the set temperature, the

compressor turns ON. When room temperature falls below the set temperature, the compressor turns OFF.

Page 36

HIGH POWER

NIGHT SETBACK

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

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

regardless of the desired temperature.

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

Frequency

MAX

30 min. 5 min.

Start End

Time

NOTE

•

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

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

•

Lamp colors

OPERATION lamp

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

TIMER lamp Green

LED CLEAN 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 37

Noise Reducing Control (Outdoor Unit)

The noise reducing control is the function used for silent operation of the air conditioner by means of setting the dip switch on the outdoor unit P.C.Board to control the fan and compressor's motor speed. 

NOTE

When this function is used, the cooling or heating ability is slightly degraded. Therefore, when this function is to be enabled, make sure to receive the approval of the client.

Specifications

Noise Reducing Control

(Fan's motor speed : 500rpm)

Cooling Heating Cooling Heating

55 dB-A 55 dB-A 47 dB-A 47 dB-A

Outdoor Air Temp. [°C]

Noise Reducing Operation is kept.

NOTE

(Initial setting is the normal operation.)

1. In the test operation, high-power operation, defrost operation or low ambient cooling

Normal Operation

Normal Operation or

Noise Reducing Operation

Outdoor Air Temp. [°C]

 operation (to be cancelled at the outside temperature of 14 °C or less, or 17 °C or  more), the noise reducing control is not available.

2. In the noise reducing operation, the fan's maximum motor speed is limited to 500rpm.  Also, the maximum frequency (Hz) is controlled in the cooling (30Hz) or heating  operation (30Hz).

Noise Reducing Operation

Normal Operation or

Noise Reducing Operation is kept.

(Initial setting is the normal operation.)

Normal Operation

(1) Remove the 3 screws fixing the inspection panel and remove the inspection panel. (Fig. 2) (2) When the switch No. 1 of the dip switch (SW01) on the control P.C.Board is turned ON,  the noise reducing control is enabled. (Fig. 3)

Power lamp

Control P.C.Board

Inspection panel

Slide downward

SW01

Fig.3 Control P.C.Board

Fig.2 View from front

Dip switch (SW01)

Page 38

Maximum Current Value Change Function

The maximum current value is changed to 14A (for CH3082) or 17A (for CH3682) to prevent power breaker

tripping. (It is set to 24A (in cooling) or 22A (in heating) when the unit is delivered from the factory.)

NOTE

1. When the high load is given (Outside temperature is high in the cooling operation, or  outdoor temperature is low in the heating operation), the capacity is reduced.  When the maximum current value change function is to be enabled, make sure to receive  the approval of the client.

2. The maximum capacity for cooling or heating operation is about as much as the rated  capacity.

Description of function

Example of operation for heating

Power Point C

Point B Point A

Target

frequency

Frequency

Frequency Current

Operates at the target frequency at Point A and below.

•

Stops increases to the frequency between Points A and B.

•

Reduces the frequency by 1 Hz per 0.5 seconds when Point B is exceeded.

• Stops operation, and restarts it appoximately 5 minutes later, if Point C is 

•

exceeded. (May operate when sudden voltage fluctuations occur. Indicates trouble.)

Stops operation

Approx.3 minutes

< CH3082 >

Current Value on

the Point C

Current Value on the Point B

Current Value on the Point A

< CH3682 >

Current Value on

the Point C

Current Value on the Point B

Current Value on the Point A

In cooling operation

(25.0)

22.0

21.6

In cooling operation

(25.0)

24.0

23.6

In heating

operation

(25.0)

22.0

21.6

In heating

operation

(25.0)

23.5

23.1

(1) Remove the inspection panel.

 Refer to Fig. 2 in " Noise Reducing Control" for details.

(2) When the switch No.2 of the dip switch (SW01) on the control P.C.Board is turned ON,

 the maximum current value change. (Fig. 4)

Power lamp

Dip Switch (SW01)

Switch No.2

OFF

Max. Current Value

CH3082 CH3682

14.0A 17.0A

22.0A 24.0A

Dip switch (SW01)

SW01

Fig.4 Control P.C.Board

Page 39

7-2. 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.

133

(56)

Approx.

122

(50)

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 41°F(5°C).

 Restart after freeze-prevention operation occurs when the

temperature of the indoor heat exchanger reaches 46°F(8°C) or above.

(8)

(5)

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. 95

(35)

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

* 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.

area.

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 40

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.

KHS3082

Cooling Dry Heating

Peak current cut-off trips 25.0

Hz down 22.0

(A)

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.

KHS3682

Cooling Dry Heating

Peak current cut-off trips 25.0

Hz down 24.0 23.5

NOTE

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

(A)

Releasing of defrosting

Outdoor heating exchanger temp. is over 57.2°F (14°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 41

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 QUIET 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 QUIET 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 twice to change the display

from "oP-1" to "oP-2" and "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

Deletion of self-diagnostics report mode

Self-diagnostics mode

ON/OFF operation button

1HR. TIMER button

QUIET 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 42

(1) Self-diagnostics Lamps

INDOOR UNIT

(1) OPERATION lamp

(2) TIMER lamp

OPERATION TIMER

LED CLEAN

ON/OFF

(3) LED CLEAN lamp

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

Alarm

Code

F10

F02

F13

F04/F12

F09/ F15 to F18 F08/ F21 to F24

F27

E05

P26

F31

P16

P07

P03

P01

P19

P15

Indication on indoor unit

Operation

(3)

Timer

(2)

(1)

LED Clean

Error Code

S01

S02

S03

S04

S05

S06

S07

E01

E02

E03

E04

E05

E06

E07

E08

E09

Diagnosis Contents

Room temperature sensor failure

Indoor heat exchanger sensor failure

Humidity sensor failure

Compressor temperature sensor failure

Outdoor heat exchanger sensor failure

Outdoor air temperature sensor failure

Outdoor electrical current detection failure

Indoor/outdoor communications failure (serial communications)

• HIC circuit failure

• Power Tr (transistor) circuit failure

Outdoor unit external ROM (OTP data) failure

Peak current cut-off

• PAM circuit failure

• Active circuit failure

Compressor discharge overheat prevention activated.

Indoor fan operating failure

• 4-way valve switching failure

• Indoor zero-cross failure

No-refrigerant protection

....

OFF

(1) Sensor open circuit or short circuit (2) Contact failure at connector or open circuit at terminal crimping location  (short-circuit detection only for the humidity sensor) (3) Indoor/outdoor PCboard failure

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

Outdoor PCboard failure

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

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

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

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

(1) Outdoor PCboard failure (2) Outdoor power supply voltage failure

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

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

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

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

....

Blinking

Possible Malfunction

....

ON (Illuminated)

PCboard

failure

P29

P22

E07/P04/P05

P20/P27

P11

E10

E11

E12

E13

DC compressor drive circuit failure

Outdoor fan operating failure

• Outdoor system communications failure

• OLR operation

• Outdoor power supply open phase

• Outdoor coil freezing

Freeze-prevention operation activated.

(1) Open phase (2) Outdoor PCboard failure

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

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

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

Page 43

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

Check the indoor unit.

No indicators illuminate and the indoor fan does not rotate.

Check the power voltage.

Is the fuse blown?

Normal

Replace the controller.

Blown

Replace the circuit

board or the fuse.

Page 44

8-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

ControlNo. Check items (unit operation)

•

Use the remote controller to operate the

unit in "TEST run" mode. To determine whether the mode is currently in "TEST run" mode, check the 4 indicator lamps on the unit. If all 4 are blinking, the current mode is "TEST run."

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

(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

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.

•

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 45

(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

Alarm Code (Error Code)

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

Lamp

E05 (E01)

LED Clean

Timer Operation :Off

(3) (2) (1)

: Blinking

: Illuminated

E07/P04/P05/P20/P27 (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 "Alarm Code : E05 and E07/P04/P05/P20/P27".

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) Alarm Code : E05

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 46

( 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.

Alarm Code : E07/P04/P05/

What is the latest self-diagnosis result ?

Yes

P20/P27

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.

Alarm Code : E05

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.

Alarm Code : E07/P04/P05/

What is the latest self-diagnosis result ?

Alarm Code : E05

1 2 43 5 6

1 2 3

Indoor Unit

P20/P27

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 47

(3-2) Alarm Code : E07/P04/P05/P20/P27

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 ?

Alarm Code : E07/P04/P05/

P20/P27

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.

Alarm Code : E05

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 6

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 ?

Alarm Code : E07/P04/P05/

P20/P27

Defect in the indoor unit

P.C. board

Alarm Code : E05

Defect in the inter-unit

cable

Page 48

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.

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: Not used  Pin 4: Gnd (black)  Pin 5: Vcc (white)  Pin 6: Vs (yellow)  Pin 7: 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

(1) Vm-Gnd: Between pin 1 and pin 4 (2) Vcc-Gnd: Between pin 5 and pin 4 (3) Vs-Gnd: Between pin 6 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. Indoor unit controller trouble (Replace the controller .)

DC 280 V +/-10% DC 15 V +/-10% Fluctuation between DC 1.63 to 6.23 V

Normal value

[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 49

8-4-2. 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 of indoor unit.

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)

(1) Vm-Gnd : Between pin 1 and pin 3 of FM1 (2) Vcc-Gnd : Between pin 1 of FM2 and pin3 of FM1 (3) Vs-Gnd : Between pin 3 of FM2 and pin3 of FM1

(Diagnostic results)

(Reference) DC motor connector pin arrangement

(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

DC 280V +/- 10% DC 15V +/- 10% Fluctuation between DC 1.8V to 5.7V

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

(Replace the controller .)

Normal value

Connector No.

Pin 1: Vm (red)

FM1

FM2

[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.

Pin 2: Not used Pin 3: Gnd (blue) Pin 1: Vcc (brown) Pin 2: PG (white) Pin 3: Vsp (orange)

Page 50

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

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 51

9. CHECKING ELECTRICAL COMPONENTS

9-1. Measurement of Insulation

Resistance

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

9-1-1. 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)

9-1-2. 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

Ground wire

Insulation tester

Fig. 1

Terminal plate

Probe

Insulation tester

9-1-3. 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)

9-1-4. 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 52

9-2. 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 53

10. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

10-1. Characteristics of New Refrigerant R410A

10-1-1. 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.

10-1-2. Components (mixing proportions)

HFC32 (50%) / HFC125 (50%)

10-1-3. 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 54

10-2. 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 55

10-3. 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

10-4. 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 56

10-5. 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 "10-3. Tools Specifically for R410A."

10-5-1. 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

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(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 58

10-6. 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 59

10-7. Charging Additional Refrigerant

10-7-1. 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 "10-6. In Case Refrigerant is Leaking" and completely carry out repairs. Only then should you recharge the refrigerant.

10-8. Retro-Fitting Existing Systems

10-8-1. 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.

10-8-2. 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 60

APPENDIX A

KHS3082 + CH3082 KHS3682 + CH3682

INSTRUCTION MANUAL

(OI-852-6-4181-149-00-0)

A-1

Page 61

KHS3082 KHS3682

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-85264181149000

Save These Instructions! Conserver ce mode d’emploi

Page 62

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”.

• Quiet Operation

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

• LED Clean Operation

During operation, the UV anti-bacteria unit is activated for 30 minutes and cleans the air blown from the air conditioner.

• Anti-Mold Filter

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

• Air Clean Filter

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

• Unoccupied

This function prevents the room temperature from decreasing too much (or increasing too much) when no one is in the room, and operate automatically to save energy.

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. QUIET Mode .............................................................10

7. HIGH POWER Mode................................................. 11

8. LED CLEAN Mode .................................................... 11

9. UNOCCUPIED Mode................................................11

Page Page

SPECIAL REMARKS ................................................................12

SETTING THE TIMER ..............................................................13

USING THE 1-HOUR OFF TIMER ...........................................14

TIPS FOR ENERGY SAVING...................................................14

ADJUSTING THE AIRFLOW DIRECTION ...............................15

OPERATION WITHOUT THE REMOTE CONTROL UNIT .......15

CARE AND CLEANING ............................................................15

TROUBLESHOOTING ..............................................................17

OPERATING RANGE................................................................17

WIRED REMOTE CONTROLLER ............................................17

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Page 63

PRODUCT INFORMATION

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

Model No. __________________________________ Serial No. ___________________________________

ELECTRICAL REQUIREMENTS

1. All wiring must conform to the local electrical codes.

Consult your dealer or a qualified electrician for details.

2. Each unit must be properly grounded with a ground (or

earth) wire or through the supply wiring.

3. Wiring must be done by a qualified electrician.

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.

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.

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Page 64

NAMES OF PARTS

Air intakes

INDOOR UNIT

Air outlet

Remote control unit

Drain hose

UNIT DISPLAY AND OPERATION BUTTON

INDOOR UNIT

OPERATION lamp

TIMER lamp

REMOTE CONTROL receiver

Refrigerant tubes

OUTDOOR UNIT

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.

OPERATION button (ON/OFF)

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

LED CLEAN 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 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)

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 UV antibacterial mode.

Heating

operation

(red)

LED CLEAN lamp

Stop

(lamp off)

NOTE

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

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Page 65

REMOTE CONTROL UNIT (DISPLAY)

Displayed when setting temperature

Symbols

Displayed when transmitting data

Displayed when indoor unit sensor is in use

Displayed when temperature is shown

Displayed when setting timer

(1) Operation mode

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

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

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

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

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

(2) Fan speed

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

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

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

(4) Timer

24-hour clock with ON/OFF

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

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

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

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

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

(6) Confirmation of transmission.......

(7) Auto. flap indication................

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

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

(3) Temperature setting

60–86°F When set to 80 °F

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

OI-149-5-EG

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

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

(9) UNOCCUPIED ......................

(10) Quiet operation....................

(11) LED CLEAN operation.........

Page 66

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.

LED CLEAN button

: If this button is pressed during AUTO, HEAT, DRY, COOL or FAN

operation, the UV anti-bacterial unit is activated for 30 minutes and cleans the air blown from the air conditioner.

QUIET button

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

setting to provide a quieter operating sound.

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 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-149-6-EG

Page 67

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.

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’’.

CLOCK button UNOCCUPIED button

For details, see “9. UNOCCUPIED Mode”. When you press this button, the mark appears in the display. And the remote control unit will automatically prevent the room temperature from decreasing too much (or increasing too much) when no one is in the room.

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-149-7-EG

Page 68

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 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)

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

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.

Hole

Remote control unit

(Transmitter head)

Receiver

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.

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OPERATION WITH THE REMOTE CONTROL UNIT

1. Automatic Operation

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

STEP 2

STEP 1

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 15.)

or 86 °F max.

60 °F min.

→ → → →

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Page 70

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. QUIET Mode

Night Setback Mode is used for saving energy.

Press the NIGHT SETBACK button while operation. (except AUTO and FAN mode) The mark appears in the display.

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

NOTE

Pressing the MODE selector button cancels Night Setback mode.

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

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

To cancel, press QUIET button again.

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

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

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7. HIGH POWER Mode

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.

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

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

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

NOTE

• Pressing the MODE selector button cancels HIGH POWER mode.

• 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.

8. LED CLEAN Mode

NOTE

• Pressing the MODE selector button cancels LED CLEAN mode.

• Do not open the front panel while the LED CLEAN lamp on the display is on.

• Depending on the room brightness, light from the LED CLEAN lamp may reflect inside the air conditioner and be visible. This is not a malfunction.

9. UNOCCUPIED Mode

Unoccupied mode is used to prevent the room temperature from decreasing too much (or increasing too much) when no one is in the room, and operate automatically to save energy.

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

To release the unoccupied function, press the UNOCCUPIED button again.

Unoccupied Indication

Unoccupied

Function

OFF no display The unoccupied function is not set.

Unoccupied

Indication

flashing

lighting

Status

The unoccupied function is now being set, and under Heating (or Cooling) operation.

Although the unoccupied function is set, not under Heating (or Cooling) operation.

In LED CLEAN mode, a UV anti-bacterial unit (including a LED CLEAN lamp and anti-bacterial filter) in the indoor unit is used during AUTO, HEAT, DRY, COOL, or FAN operation to remove bacteria from air blown from the air conditioner.

Press the LED CLEAN button while operation. The mark appears in the display.

To cancel, press the LED CLEAN button again.

• When the LED CLEAN button is pressed, the UV anti-bacterial unit operates for one hour and cleans air blown from the air conditioner.

OI-149-11-EG

NOTE

Even if Unoccupied Mode is ON, it will be disabled if the air conditioner is in operation.

• Unoccupied Function can be set and released through all operational modes, regardless of whether the air conditioner is operating or not.

• If the Unoccupied Function is ON and the remote control unit is used to turn the air conditioner OFF (including OFF TIMER), the air conditioner will turn off, but depending on the room temperature, Heating or Cooling Operation will automatically begin.

• When the Unoccupied Function is in operation and the ON/OFF operation button is pressed, operation will restart based on the settings input before the air conditioner was turned off.

Page 72

A. In Heating Mode: ( )

(1) When the room temperature drops below 46°F, Heating

Operation will begin.

(2) When the room temperature rises to above 53°F, Heating

Operation will stop.

The above actions will repeat so that the room temperature is maintained at about 50°F.

Room Temperature (°F)

(1)

Heating starts

(2)

Heating stops

Time

B. In Cooling Mode: ( )

(1) When the room temperature rises above 89°F, Cooling

Operation will begin.

(2) When the room temperature drops below 82°F, Cooling

Operation will stop.

The above actions will repeat so that the room temperature is maintained at about 86°F.

Room Temperature (°F)

• Unoccupied Mode triggers Heating or Cooling Operation in response to the room temperature, but when this happens, the remote control unit will continue to display the Operation mode set by the user.

• If the room temperature rapidly changes, the room temperature may get over the upper or lower limit when the unoccupied function is activated.

NOTE

• The remote control unit should be used in the location specified in “REMOTE CONTROL UNIT INSTALLATION POSITION” on page 8.

• The air conditioner’s stop order (stated in (2) / above) is valid only when the unoccupied function is operated.

(1)

Cooling starts

(2)

Cooling stops

Time

SPECIAL REMARKS

‘‘DRY’’ ( ) Operation

How it works?

• Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically.

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

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

Heating ( ) Operation

Heating performance

• When High power operation , Fan speed Automatic operation

, HIGH or MEDIUM has been changed to Fan speed LOW , Quiet operation or Night Setback , the fan speed may not be reduced to the desired setting immediately but rather it may be reduced slowly in steps due to the operating status of the air conditioner. (A maximum of 5 minutes are required for the change to be completed.)

• 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 in approximately 5 minutes by the remote control unit. If the remote control unit is on and left in a location where the unit can receive a signal, then the unit will automatically restart in approximately 5 minutes of power being restored.

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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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

1. How to set the present time

(Example) To set to 10:30 pm.

2. How to set the OFF time

(Example) To 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 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.

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.

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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.

USING THE 1-HOUR OFF TIMER

1. 1-Hour OFF Timer

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.

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.

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Page 75

ADJUSTING THE AIRFLOW DIRECTION

1. Horizontal

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

CAUTION

• 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.

OPERATION WITHOUT THE REMOTE CONTROL UNIT

CAUTION

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

2. Vertical

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.

DRY

SWEEP

HEAT FAN

B. Setting the airflow manually

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

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 unit.

INDOOR UNIT

OPERATION lamp

OPERATION button (ON/OFF)

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)

Heating

operation (red)

Stop

(lamp off)

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.

CARE AND CLEANING

1. For safety, be sure to turn the air

conditioner off and also to disconnect the power before cleaning.

2. Do not pour water on the indoor unit

to clean it. This will damage the internal components and cause an electric shock hazard.

Casing and Grille (Indoor Unit)

Clean the casing and grille of the indoor unit with a vacuum cleaner brush, or wipe them with a clean, soft cloth.

OI-149-15-EG

Page 76

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

CAUTION

1. Never use solvents, or harsh

chemicals when cleaning the indoor unit. Do not wipe the plastic casing using very hot water.

2. Some metal edges and the fins are

sharp and may cause injury if handled improperly; be especially careful when you clean these parts.

3. The internal coil and other

components of the outdoor unit must be cleaned every year. Consult your dealer or service center.

Anti-Mold Filter

The anti-mold filter behind the front panel should be checked and cleaned at least once every two weeks.

How to remove the anti-mold filter

Grasp both ends of the front panel and pull forward and up to open the front panel.

Front panel

Anti-mold filter

Protrusions

2. Lift the anti-mold filter up slightly to disengage it from the

protrusions on the unit.

3. Pull downward to remove the filter from the unit.

Cleaning

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.

How to replace the anti-mold filter

Insert the top of the anti-mold filter, and then secure the bottom of the filter with the protrusions on the unit.

2. Close the front panel by pushing the center of the front panel and

then pressing both edges until the panel clicks into place.

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

How to install the air clean filter

The air clean filter needs to be installed behind the anti-mold filter.

Anti-mold filter

Air clean filter

Air filter holder

1. Open the front panel and remove the anti-mold filter.

2. Remove the air filter holder from the anti-mold filter.

3. Install the air clean filter in the air filter holder.

4. Install the air filter holder to the anti-mold filter, remount the anti-

mold filter, and close the front panel.

How to clean the air clean filter

• In general, the filter should be sucked to remove dust in low fan speed of a vacuum cleaner once every three months.

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

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

NOTE

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

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

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.

• The front panel can be removed in order to wash it with water.

Removing and remounting the front panel

Removing

Open the front panel until it is nearly horizontal, grasp the sections near the front panel arms on both sides, and then remove the panel by pushing the arms towards the outside while pulling the panel towards you. If the front panel is difficult to remove, grasp both ends of it and lift it up slightly. Move it to the left and disengage the left arm, then move it to the right and disengage the right arm.

Air Clean Filter

The air clean filter removes dust and dirt from the air, and reduces odors and smoke from tobacco.

Front panel Arm

OI-149-16-EG

Page 77

Remounting

Grasp the sections near the front panel arms on both sides, and hold the front panel so that it is nearly horizontal. Push the arm shafts towards the outside so that they come into contact with the top of the indentations on the right and left sides of the air conditioner. Then push firmly until the arm shafts click into place. After closing the front panel, press firmly on the parts indicated by the arrows to securely fasten the panel in place. Also refer to the figure that shows “How to replace the anti-mold filter”.

CAUTION

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

Washing the front panel with water

• Clean the front panel gently using a soft sponge, or the like. Then wipe away any remaining moisture.

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

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.

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.)

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.)

Trouble Possible Cause Remedy

Clicking sound is heard from the air conditioner.

OPERATION lamp lights but outdoor unit will not run.

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.

This is normal, and the sound will soon disappear.

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

2. Consult your dealer.

OPERATING RANGE

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

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 – DB / 0 °F WB

WIRED REMOTE CONTROLLER

A separately sold wired remote controller (STK-RCS7TWSUA) used with this air conditioner is also available. If you wish to use the wired remote control function, you will need to purchase both the optional wired remote controller and its connection kit (STK-KCW2).

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Page 78

INSTALLATION INSTRUCTIONSAPPENDIX B

KHS3082 + CH3082 KHS3682 + CH3682

(II-852-6-4190-498-00-0)

A-2

Page 79

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 ............ 12

3-1. Remove the Rear Panel from the Unit 3-2. Make a Hole 3-3. Install the Rear Panel on the Wall 3-4. Removing and Installing the Grille 3-5. Shape the Indoor Side Tubing 3-6. Wiring Instructions 3-7. Wire Size and Length 3-8. Wiring Instructions for Inter-unit Connections 3-9. Mounting 3-10. Frame Fastening Method 3-11. Drain Hose

Refrigerant service valve size = 5/16"

Page

COOL/ DRY/HEAT Model

Model Combinations

Combine indoor and outdoor units only as listed below.

Indoor Unit Outdoor Unit

KHS3082 CH3082

KHS3682 CH3682

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

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

7. REMOTE CONTROL UNIT INSTALLATION

POSITION ......................................................... 29

7-1. Mounting on a Wall

8. ADDRESS SWITCH .......................................... 30

8-1. Address Setting of the Remote

Control Unit

4. HOW TO INSTALL THE OUTDOOR UNIT ........ 22

4-1. Wiring Instructions for the Outdoor Unit 4-2. Routing the Tubing and Wiring

5. REFRIGERANT TUBING .................................. 23

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................................................... 25

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

■ Basic Functions of the Service Valves

■ Pump Down

■ Service Valve Connections

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.

SANYO North America Corporation In Canada Commercial Solutions Division SANYO Canada Inc. 2055 Sanyo Ave., San Diego 201 Creditview Road, Woodbridge CA 92154, U.S.A. Ontario, L4L 9T1, Canada

Page 80

IMPORTANT!

WARNING

CAUTION

Please Read Before Starting

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

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

●

Carefully read this instruction booklet before beginning.

●

Follow each installation or repair step exactly as shown.

●

Observe all local, state, and national electrical codes.

●

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

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

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

If Necessary, Get Help

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

In Case of Improper Installation

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

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

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.

SPECIAL PRECAUTIONS

When Wiring

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

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

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

death.

• Ground the unit following local electrical codes.

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

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 Servicing

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

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

• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

Others

• 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 81

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

Parts Figure Q’ty Parts Figure Q’ty

Remote control unit

Remote control unit holder

AAA alkaline battery

Air clean filter

Tapping screw

Truss-head Phillips

/32 × 5/8" (4×16 mm)

Truss-head Phillips

/32 × 13/32" (4×10 mm)

6. Sabre saw or key hole saw

7. Hacksaw

8. Core bits

9. Hammer

10. Drill

11. Tube cutter

12. Tube flaring tool

13. Torque wrench

14. Adjustable wrench

15. Reamer (for deburring)

Parts Figure Q’ty

Rawl plug

Drain hose

adapter

Flare insulation

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

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

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

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

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

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

Table 2

Model

KHS3082 3/8" (9.52 mm) 0.0314" (0.8 mm) 5/8" (15.88 mm) 0.0393" (1.0 mm)

KHS3682 3/8" (9.52 mm) 0.0314" (0.8 mm) 5/8" (15.88 mm) 0.0393" (1.0 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 82

1-5. Additional Materials Required for Installation

Drain hose

Indoor unit

Outside drainage

INDOOR UNIT

Tubing length (L)

OUTDOOR UNIT

Elevation difference (H)

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:

2" (5 cm)

min.

Fig. 1

3" (7.5 cm) min.

2" (5 cm)

min.

● direct sunlight.

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

● areas where leakage of flammable gas may be expected.

● places where large amounts of oil mist exist.

DO:

● select an appropriate position from which every corner of

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

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

● select a location where tubing and drain hose have the

shortest run to the outside. (Fig. 1)

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

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

● install the unit within the maximum elevation difference (H)

above or below the outdoor unit and within the maximum tubing length (L) from the outdoor unit as detailed in Table 3 and Fig. 3a.

● install the indoor unit more than 3.3' (1 m) away from any

antenna or power lines or connecting wires used for television, radio, telephone, security system, or intercom. Electrical noise from any of these sources may affect operation.

Table 3

Model

KHS3082 KHS3682

* If total tubing length becomes 100 to 165 ft. (Max.), charge additional refrigerant (R410A) by 0.43 oz./ft.

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

Charge-less Tubing

Length (Actual Length)

(ft.)

Front View

Fig. 2

Fig. 3a

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

Fig. 3b

Maximum Tubing

Length (L)

(ft.)

16510 to 100 0.43

Maximum Elevation Difference (H)

(ft.)

If the outdoor unit is higher

If the outdoor unit is lower

100

Indoor unit

Minimum height from floor level

5' (1.5 m)

Floor level

Required Amount

of Additional Refrigerant

(oz./ft.)*

Wall

Page 83

Air intake

Concrete or equal

About 6" (15 cm)

Min. 6" (15 cm)

Anchor bolts (4 pcs.)

About 1'4" (40 cm)

2-2. Outdoor Unit

Outdoor unit

Hot air

Heat source

Exhaust fan

CAUTION

AVOID:

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

● damp, humid or uneven locations.

DO:

● choose a place as cool as possible.

● choose a place that is well ventilated.

● 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. (Fig. 5a)

● provide a solid base (level concrete pad, concrete block,

6" x 1'4" (15 x 40 cm) beams or equal), a minimum of 6" (15 cm) above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Figs. 5b and 5c)

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

● install cushion rubber under unit’s feet to reduce

vibration and noise. (Fig. 5d)

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

vibration and noise.

● install in a location where no antenna of a television

or radio exists within 10' (3 m).

Drain holes

Fig. 5b

Fig. 4

Obstacle above

Air intake

Min.

6" (15 cm)

Air discharge

Min. 10"

(25 cm)

Min. 3'3" (100 cm)

Air discharge

Ground

Fig. 5a

● Concerning air-intake side distance “A” (Fig. 5a)

The minimum for distance “A” is 6" if there are no obstructions on the air-discharge side (wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance “A” is 8".

● If wall *1 is on the air-discharge side (Fig. 5a), or if

obstructions are present on all 3 sides *2, *3, and *4 (Fig. 5a), then the minimum distance for “B” and “C” is 39-3/8". Even if there is no wall on the air-discharge side, a minimum of 39-3/8" is required.

Obstacle

Min. 8" (20 cm)

Air intake

Fig. 5c

Cushion rubber

(Locally purchased)

Fig. 5d

Page 84

2-2-1. Installing the Unit in an Area with High Winds and in a Snowy Area

● In locations with high winds, a wind-proof duct

should be fitted and direct exposure to the wind should be avoided as much as possible. (Fig. 5e)

● In regions with significant snowfall, the outdoor unit

should be provided with a platform and snow-proof duct. (Fig. 5f)

■ Countermeasures against snow and wind

In regions with snow and strong wind, the following problems may occur when the outdoor unit is not provided with a platform and ducting:

a) The outdoor fan may not run and damage to the

unit may occur.

b) There may be no air flow.

c) The tubing may freeze and burst.

d) The condenser pressure may drop because of

strong wind, and the indoor unit may freeze.

2-2-2. Precautions for Installation in a Snowy Area

(1) The platform should be higher than the maximum

snow depth. (Fig. 5g)

(2) The 2 anchoring feet of the outdoor unit should

be used for the platform, and the platform should be installed beneath the air intake side of outdoor unit.

Air discharge

Air Intake

Air discharge

Outdoor unit



Air discharge

Fig. 5e

Air discharge

Duct

igher than the

axi

Air Intake

h



dept

sno

(3) The platform foundation must be firm and the unit

must be secured with anchor bolts.

(4) In case of installation on a roof subject to strong

wind, countermeasures must be taken to prevent the unit from being blown over.

About 1/2 of the unit height

Without snowproof ducting (Low platform)

Platform (foundation)

Fig. 5f

Without snowproof ducting (High platform)

Fig. 5g

Page 85

11-13/16" 13-3/8"

25-3/16"

22-7/8"

(6-21/32")

6-5/16"

21-25/32" (12-9/16")

2-11/16"

35-13/16"

37-1/32"

Air discharge

Hole for anchor bolt (4-R1/4") / Anchor bolt : 3/8" or M101

Air discharge

25-31/32"6-11/16"

13-3/8"

25/32"25/32"

14-31/32" 13/32"25/32"

Air Intake

Air discharge

Unit: inch

Air

Air Intake

(4-11/32")

discharge

Air discharge

2-2-3. Dimensions of Wind-proof Duct

(9/16")

21-9/16"

(1/4")

22-1/4"

23-7/16"

(4-31/32")

4-31/32"

21-25/32"

11-13/16"

1-5/16"

15/16"

18-15/16"

(1-31/32")

(1-31/32")8-21/32"1-3/16"

22-7/8"

Equivalent to the reverse side

Unit: inch

4- 1/4"

hole

Reference diagram for CH3082/3682

Reference diagram for wind-proof duct (locally purchased): STK-DGV160E

Page 86

Required space around the outdoor unit

8" na

t ero

More than 9-27/32" More than 9-27/32"

More than 6"

If the wind-proof duct is used, the space shown below must be secured around the outdoor unit. If the unit is used without the required space, a protective device may activate, preventing the unit from operating.

(1) Single-unit installation

" or more

Min. 8

or more

Min. 39-3/8"

Unit: inch

CAUTION

The top and both sides must remain open. If there are obstacles to the front and rear of the outdoor unit, the obstacle at either the front or rear must be no taller than the height of the outdoor unit.

(2) Multiple-unit installation

Installation in lateral rows

CAUTION

The front and top must remain open. The obstacles must be no taller than the height of the outdoor unit.

Installation in front-rear rows

intakes or outlets facing outlets

Unit: inch

Installation with intakes facing outletsInstallation with intakes facing

More than 11-13/16"

More than 47-1/4"

CAUTION

The front and both sides must remain open.

More than 78-3/4"

Unit: inch

Page 87

25-13/32"

3/32"

13-3/8"

(11-15/16")

16-15/16"

Air Intake

Air discharge

39-1/4"

27-7/32"

7-1/32"

35-15/16"

28-15/16"

27-5/8" (11-5/8")

Air Intake

13/32"14-31/32"

25/32"

13-3/8"

4-11/32"

(8-15/16") 25-31/32"

Air discharge

Unit: inch

Hole for anchor bolt (4-R1/4") / Anchor bolt: 3/8" or M10

2-2-4. Dimensions of Snow-proof Duct

Unit: inch

Unit top, snow-proof duct

Unit right, snow-proof duct

Unit left, snow-proof duct

Unit front, snow-proof duct

Unit reverse side, snow-proof duct

Unit reverse side, reinforcement bracket for snow-proof duct

Unit left, reinforcement bracket for snowproof duct

Fastened by screws at 14 locations

Fastened by screws at 3 locations

Fixing with

front panel

2- 9/32"

hole

2- 9/32"

hole

2- 9/32"

hole

2- 9/32"

hole

9/32"

X13/32"hole

15-11/32"

Fastened by screws

(Same on the reverse side)

Fastened by screws at 2 locations

28-13/16"

16-15/16"

9-1/8"

31/32"

2-7/32"

24-3/16" 28-3/16"

Fixing with rear panel

5/8"

6-1/32"

28-3/16"

1-15/16"20-13/32"

5/16"

5-13/32"

34-23/32"

11-7/8"

28-/13/16"

16-15/16"

9-1/8"

4-1/32"

Fixing with rear panel

Unit anchor holes

(Unit fixed bottom plate)

9-7/32"

13-7/8"

5-1/8

4-11/32"

1-9/16"

5-7/8"

25/32"

4-27/32"

20-7/8"

3-27/32"

3-15/16"

4-23/32"

25-13/32"

17-9/16"

Fastened by screws at 2 locations (Same on the reverse side)

Fixing with top panel

1/16" 27-9/16"

Reference diagram for CH3082/3682

Reference diagram for snow-proof duct (locally purchased): STK-BDV80E

Page 88

Reference diagram for snow-proof duct

Space requirements for setting CH3082/3682 with STK-BDV80E

[Obstacle to the rear of unit]

[Obstacle to the front of unit]

Top is open: Top is open:

(1) Single-unit installation

(2) Obstacles on both sides

Min. 6"

or more

Min. 11-13/16" or more

(3) Multiple-unit installation (2 or more units)

Min. 11-13/16" or more

Min. 11-13/16"

or more

Min. 11-13/16" or more

or more

Min. 11-13/16"

(1) Single-unit installation

(2) Multiple-unit installation (2 or more units)

Min. 9-27/32" or more

Min. 19-11/16"

or more

Min. 39-3/8"

or more

Note:

In cases 2 and 3 the height of the obstacle must be no taller than the height of the outdoor unit.

Top is blocked by an obstacle:

Min. 6" or more

Min. 39-3/8" or more

Top is blocked by an obstacle:

Min. 39-3/8" or more

Min. 39-3/8"

or more

Page 89

[Obstacles to the front and rear of unit]

The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no taller than the height of the outdoor unit.

(1) Single-unit installation

(2) Ob

stacles on both sides

Installation is possible with the maximum 3 outdoor units.

Min.11-13/16" or more

. 8"niM

ero

/11-

ero

91 .niM

r o

. 39-3/8"niM

erom ro

"61/11-91.niM

"61/31

-11.ni

r o

"8/3-

e rom ro

3.niM

o m ro

[Installation in front-rear rows]

• The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no taller than the height of the outdoor unit.

Min. 19-11/16

or more

Min. 39-3/8"

or more

Min. 11-13/16

or more

Min. 59-1/16

or more

Min. 78-3/4

Min. 11-13/16

or more

Unit: inch

Page 90

Rear panel

Set screw only for transportation

Rear panel

marks

3. How to Install the Indoor Unit

CAUTION

3-1. Remove the Rear Panel from the Unit

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

(Fig. 6)

(2) Press the 2 ▲ marks on the frame cover and disengage

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

(3) Remove the rear panel by grasping the sections shown

in Fig. 7b and pulling it in the direction shown by the arrow.

NOTE

Tubing can be extended in 6 directions as shown in Fig. 8. Select the direction you need providing the shortest run to the outside unit.

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

drain cap. (For details, refer to “Switching drain hose and drain cap” on page 20.)

3-2. Make a Hole

Fig. 6

Fig. 7a

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

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

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

hole for tubing and wiring. (Fig. 9)

NOTE

In the case of left-rear tubing, use the measurement points 6-7/32" (158 mm) from the marked position on the rear panel for precise placement of the hose outlet. (Fig. 9)

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

pipes are directly run behind the spot to be cut.

Also avoid areas where electrical wiring or conduits are located.

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

6-7/32"

(158 mm)

5-3/16"

(132 mm)

Fig. 9

Left tubing

Left-downward tubing

Fig. 7b

Fig. 7c

Left-rear tubing

Fig. 8

Right-rear tubing (recommended)

Right tubing

Right-downward tubing

Page 91

Indoor side

Outdoor side

Plastic cover

INSIDE OUTSIDE

Wall

Slight angle

PVC pipe

(Locally purchased)

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

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

Table 4

Hole Dia.

3-5/32" (80 mm)

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

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

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

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

12)

3-3. Install the Rear Panel on the Wall

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

There are a number of screw holes on the rear panel. Using the 8 screw holes with mark is recommended to attach the rear panel securely to the wall.

NOTE

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

Fig. 10

PVC pipe (Locally purchased)

Cut at sli

ht angle

Fig. 11

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

a) If Wooden Wall

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

provided. (Fig. 13)

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

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

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

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

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

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

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

Fig. 12

Fig. 13

Fig. 14

3/16" (4.8 mm) dia. hole

Rawl plug

Fig. 15

Page 92

3-4. Removing and Installing the Grille

Grille

Screw cover

Screw Bottom surface

Screw (on the front)

Screw (on the cover)

Screw (on the bottom)

Grille Upper flap

Lower flap

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

How to remove the grille

(1) Open the front panel until it is nearly horizontal, grasp

the sections near the front panel arms on both sides, and then remove the panel by pushing the arms towards the outside while pulling the panel towards you. If the front panel is difficult to remove, grasp both ends of it and lift it up slightly. Move it to the left and disengage the left arm, then move it to the right and disengage the right arm. (Fig. 16)

(2) Lift the anti-mold filter up slightly to disengage it from

the protrusions on the unit, and then pull downward to remove the filter from the unit. (Fig. 16)

(3) Remove the 3 screws from the front of the unit and

remove the screw covers on the bottom surface.Then remove the 2 screws. (Fig. 17)

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

remove the cover. (Fig. 17a)

(5) Remove the lower flap by disengaging 4 pins of the

lower flap in order. (Figs. 17b and 17c) (The flap is so flexible that it can be easily removed.)

(6) Lift up the grille in the direction shown by the arrow

and pull the grille towards you to remove it. (Fig. 17d)

Front panel Arm

Anti-mold filter

Protrusions

Fig. 16

Fig. 17a

How to replace the grille

(1) While aligning the top edge of the grille with the

frame, move the grille horizontally and insert the top and bottom into the frame.

(2) Press the grille firmly with your hand to ensure no gap

exists between the frame and grille.

(3) Tighten the 6 screws. And fix the removed covers in

place.

(4) Grasp the sections near the front panel arms on both

sides, and hold the front panel so that it is nearly horizontal. Push the arm shafts towards the outside so that they come into contact with the top of the indentations on the right and left sides of the air conditioner.Then push firmly until the arm shafts click into place. (Fig. 18)

(5) Remount the lower flap.

(In remounting the flap, it cannot be turned end for end because the right and left pins of the flap differ in form. (Fig. 17c))

(6) Insert the top of the anti-mold filter, and then secure

the bottom of the filter with the protrusions on the unit.

(7) When closing the front panel, push the central part of

the front panel first and then press the bottom right and left corners in place until you feel a click. (Fig. 19)

NOTE

Check that no gap exists between the frame and the grille.

Fig. 17b

Fig. 17c

Fig. 17d

Front panel

Indentation

Arm

Fig. 18

Fig. 19

Page 93

3-5. Shape the Indoor Side Tubing

Frame

Right tubing outlet

(1) Arrangement of tubing by direction

a) Right or left tubing

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

b) Right-rear or left-rear tubing

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

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

Hang the 3 mounting slots of the unit on the upper tabs of the rear panel. (Fig. 22)

3-6. Wiring Instructions

General precautions on wiring

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

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

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

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

Frame

Left tubing outlet

Fig. 20

Fig. 21

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

Fig. 22

Page 94

3-7. Wire Size and Length

CAUTION

WARNING

CAUTION

NOTE

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.

NOTE

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

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

Table 5

Model

Wire Size

CH3082 CH3682

(*1) It depends on supply voltage level and wire specification. Consider temperature rating of wire, ambient temperature, and the number of wires inside the conduit.

(*2) Requirement of supply voltage level: AC187V to 253V (Measure voltage level at terminal plate inside the outdoor unit.)

Length

Fuse or Circuit Breaker Capacity

(A) POWER SUPPLY WIRING (B) POWER LINE (C) CONTROL LINE

AWG12 (min.) or bigger (*1) for CH3082 AWG10 (min.) or bigger (*1) for CH3682

It depends on wire specification and

supply voltage level (*2)

35A for CH3082 45A for CH3682

AWG14 or bigger

180 ft. (max.)

Disconnect switch

(15A)

AWG14 or bigger

180 ft. (max.)

(AWG: American Wire Gauge)

● Be sure to comply with local codes on running the wire

from the indoor unit to the outdoor unit (size of wire and wiring method, etc.).

● Each wire must be firmly connected.

● No wire should be allowed to touch refrigerant tubing, the

compressor, or any moving part.

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

unit must be grounded.

● For the installation of a grounding device, please

observe local electrical codes.

● Grounding is necessary, especially for units using

inverter circuits, in order to release charged electricity and electrical noise caused by high tension. Otherwise, electrical shock may occur.

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

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

WIRING SYSTEM DIAGRAM

INDOOR

UNIT

Terminal Terminal

Disconnect

switch Field supply

(C)

Grounding line

OUTDOOR

UNIT

(B)

Fig. 23

Disconnect switch may be required by national or local codes.

Always comply with national and local code requirements.

Power supply

Single phase 230/208V 60Hz

(A)

Grounding line

● Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram.

The indoor unit draws its power from the outdoor unit.

● Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone,

security system, or intercom any closer than 3'4" (1 m) from the power cable and wires between the indoor and outdoor units. Electrical noise may affect the operation.

Page 95

3-8. Wiring Instructions for Inter-unit Connections

Earth plate

Lock nut

Inter-unit

wiring

Top of conduit connector

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

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

(2) Grasp both ends of the front panel, push the arms

towards the outside, and remove the front panel by opening it towards the front and pulling it towards you. If the front panel is difficult to remove, grasp both ends of it and lift it up slightly. Move it to the left and disengage the left arm, then move it to the right and disengage the right arm.

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

open the cover. (Fig. 25)

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

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

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

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

Rear panel

Wiring

Wall

Plastic cover

10" (25 cm)

Fig. 24

Cover

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

clamp.

NOTE

When closing the front panel, push the central part of the front panel first and then press the bottom right and left corners in place until you feel a click. (Fig. 27)

Please refer to “How to replace the grille” on page 14 for installing the air intake grille.

Fig. 27

Fig. 25

Terminal plate

Fig. 26a

Fig. 26b

Page 96

Screw and special washer

Ring connector

Wire

WARNING

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

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

How to connect wiring to the terminal

a) For Indoor Unit

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

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

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

the terminal plate.

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

pletely using a screwdriver.

b) For Outdoor Unit

■ For solid core wiring (or F-cable)

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

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

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

on the terminal plate.

9/32"

STRIP SIZE

(7 mm)

Fig. 28

Solid wire

Strip 15/16" (25 mm)

Insulation

Fig. 29

Stranded wire

Strip 3/8" (10 mm)

(ACTUAL

SIZE)

Loop

Ring connector

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

suitable for the terminal screw.

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

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

■ For stranded wiring

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

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

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

on the terminal plate.

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

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

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

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

Wire

Special washer

Fig. 30

Tw ist wire ends

Fig. 31

Screw

Ring connector

Te r mi nal plate

Fig. 32

Page 97

3-9. Mounting

Fig. 37a

Fig. 37b

Refrigerant tubing

Drain hose

Conduit

Inter-unit wiring

Flare insulation

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

the 3 tabs on the upper part of the rear plate.

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

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

NOTE

For tubing, choose either the right or left tubing direction and follow the steps below. Also, extend the support on the back of the indoor unit as a stand to make your work easier. (Fig. 34)

■ Right-side tubing

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

into the wall hole. (Fig. 35)

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

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

Push

Fig. 33

Rear panel

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

the wall in the direction of the outdoor unit and then tape as far as the fittings. (See Caution on page 24.) The drain hose should come straight down the wall to a point where water runoff won’t stain the wall.

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

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

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

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

Fig. 34

Rear panel

Cover

Refrigerant tubing

Inter-unit wiring

Drain hose

Fig. 35

Fig. 36

Page 98

Hole in wall

Bent part

Narrow tube

Wide tube

Rear panel

■ Left-side tubing

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

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

(2) Switch the drain hose and drain cap.

Switching drain hose and drain cap

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

(Fig. 39)

(b) Remove the screw fastening the drain hose on

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

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

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

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

Drain hose

Slide the drain hose fully onto the drain pan outlet. (It will be easy to slide when water is added.) Check that the screw holes in the drain bracket and the drain pan outlet are aligned and securely in contact, then fasten them with the screw. (After attaching the drain hose, check that it is attached securely.) (Fig. 40b)

Drain cap

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

Fig. 38

Drain cap

Clamp

Drain hose

Fig. 39

Drain hose

Clamp

Drain cap

Fig. 40a

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

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

doors.

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

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

Screw hole

Drain bracket

Conduit

Drain pan outlet

Drain bracket

Drain hose

Screw

Drain hose

Screw

Fig. 40b

Refrigerant tubing

Inter-unit wiring

Fig. 41

Page 99

To unmount indoor unit

WARNING

Risk of Electric Shock

Condensation

Insulation material (Locally purchased) must be used.

Screw cover

Screw

Slant

Drain hose

Indoor unit

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

3-10. Frame Fastening Method

(1) Remove the screw cover on the bottom surface.

(Fig. 43)

(2) Fasten the frame to the rear panel using the 2 sup-

plied tapping screws 5/32" x 13/32" (4 x 10 mm). (Fig. 43)

NOTE

Under normal conditions, the installation design calls for a less than 3/32" (2 mm) gap between the air conditioner unit and the wall. Confirm that the gap is appropriate (less than 2 mm).

3-11. Drain Hose

a) The drain hose should be slanted downward to the

outdoors. (Fig. 44)

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

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

hose with insulation* so that chilled condensation will not damage furniture or floors. (Fig. 45)

* Foamed polyethylene or its equivalent is recom-

mended.

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

Push

Fig. 42

Fig. 43

Fig. 44

Fig. 45

Page 100

4. How to Install the Outdoor Unit

CAUTION

Terminal plate

Cabinet

Screw

Inspection panel

Fig.46a

Fig.46b

Fig.46c

Tubing outlet

Front

Right

Rear

Cover B

Cover A

Inter-unit power line

Powersupply line

(conduit)

Wiring outlet

(conduit)

Fig.46d

First refer to Section 2. Installation Site Selection.

4-1. Wiring Instructions for the Outdoor Unit

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

(1) Remove the 3 screws from the inspection panel.

(Fig. 46a) Remove the inspection panel by sliding it downward and pulling it toward you. (Fig. 46b)

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

ing to the wiring system diagram on the inspection panel. (Fig. 46c)

(3) When connections are completed, check that all

connections are correct as shown in the wiring system diagram.

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

codes.

4-2. Routing the Tubing and Wiring

● The tubing and wiring can be extended out in 3 direc-

tions: front, rear, and right. Use a nipper or similar tool to cut out the knockout holes for the inter-unit control wiring outlet, power wiring outlet, and tubing outlet from the appropriate covers A and B. (Fig. 46d)

● Route the tubing so that it does not contact the

compressor, panel, or other parts inside the unit. Increased noise will result if the tubing contacts these parts.

● When routing the tubing, use a tube bender to

bend the tubes.

Sanyo KHS3082 + CH3082, KHS3682 + CH3682, SAP-FDRV96EH, SAP-FDRV186EH, SAP-FDRV126EH Technical & Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual