Sanyo SAP-KRV94EHDX User Manual

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Page 1

IMPORTANT

These air conditioners employ new refrigerant R410A.

Pay special attention when servicing the unit.

TECHNICAL & SERVICE MANUAL

SAP-KRV94EHDX + SAP-CRV94EHDX SAP-KRV124EHDX + SAP-CRV124EHDX

DC INVERTER SPLIT SYSTEM AIR CONDITIONER

Indoor Model No.

SAP-KRV94EHDX

SAP-KRV124EHDX

Indoor Unit

Product Code No.

1 852 099 77

1 852 099 78

FILE NO.

Destination: Europe

Northern Europe

Outdoor Model No.

SAP-CRV94EHDX

SAP-CRV124EHDX

Product Code No.

1 852 330 10

1 852 330 11

Outdoor Unit

SAP-KRV94EHDX SAP-KRV124EHDX

SAP-CRV94EHDX SAP-CRV124EHDX

REFERENCE NO. SM700639

Page 2

1. OPERATING RANGE

2. SPECIFICATIONS

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

3. DIMENSIONAL DATA

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

5. PERFORMANCE DATA

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

6. ELECTRICAL DATA

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

7. INSTALLATION INSTRUCTIONS

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

8. MAINTENANCE

8-1. Address Setting of the Remote Control Unit 8-2. Removing and Mounting the Drain Hose 8-3. Removing the Electrical Component Box 8-4. Removing the Panel Motor 8-5. Removing and Mounting the Drain Pan (Air Outlet Ass'y) 8-6. Removing the Negative Ion Generator 8-7. Removing and Mounting the Fan Motor 8-8. Removing the Fan 8-9. Disconnecting and Connecting Positive Connector for Outdoor Unit

9. FUNCTIONS

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

6 8

16 18

20 21

22 24 25 26 27

28 29 30 32 33 35 36 37 38

39 41

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Page 3

10. TROUBLESHOOTING

10-1. Precautions before Performing Inspection or Repair 10-2. Method of Self-Diagnostics 10-3. Checking the Indoor and Outdoor Units 10-4. Trouble Diagnosis of Indoor and Outdoor Fan Motor 10-5. Noise Malfunction and Electromagnetic Interference 10-6. Checking and Troubleshooting when the Front Panel fails to work

11. CHECKING ELECTRICAL COMPONENTS

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

12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

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

APPENDIX INSTRUCTION MANUAL

43 43 45 46 48 49

51 52

53 53 55 55 56 58 59 59

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Page 4

When Wiring

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

SPECIAL PRECAUTIONS

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

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

CAUTION

WARNING

Important! Please Read Before Starting

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

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

Carefully read this instruction booklet before beginning. Follow each installation or repair step exactly as shown. Observe all local, state, and national electrical codes. Pay close attention to all warning and caution notices given in this manual.

If Necessary, Get Help

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

In Case of Improper Installation

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

Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked. Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death. Ground the unit following local electrical codes. Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

When Installing

In a Ceiling or Wall

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

In a Room

Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and water damage to walls and floors.

In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

When Connecting Refrigerant Tubing

Use the flare method for connecting tubing. Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection. Check carefully for leaks before starting the test run.

When Servicing

Tu rn the power off at the main power box (mains) before opening the unit to check or repair electrical parts and wiring. Keep your fingers and clothing away from any moving parts. Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

Others

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

Page 5

1. OPERATING RANGE

Maximum

Minimum

Maximum

Minimum

32 C D.B. / 23 C W.B.

19 C D.B. / 14 C W.B.

27 C D.B.

16 C D.B.

43 C D.B.

15 C D.B.

24 C D.B. / 18 C W.B. _

D.B . /

15 C W.B.

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Heating

Page 6

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit SAP-KRV94EHDX Outdoor Unit SAP-CRV94EHDX

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Heating: Indoor air temperature 20°C D.B.

Outdoor air temperature 7°C D.B. / 6°C W.B.

Voltage Rating

Liters/h

BTU/h

Capacity

m3/h

Optional / Air Clean Filter

Performance

5.0

Power Factor9695

Features

C.O.P.

Compressor Locked Rotor Amperes

W/W

Controls / Temperature Control

Control Unit

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

Auto

Timer

Indoor / Outdoor

Fan Speeds

24-Hour ON or OFF Timer, 1.2.3.5-Hours OFF Timer

Auto and 3 steps

Airflow Direction (Indoor)

Horizontal

R410A / 1,380

Electric Expansion Valve

Washable, Anti-Mold

DC Twin Rotary (Inverter)

Flare Type

7.5

40 / 38 / 30 / 22

39 / 38 / 30 / 22

6.35 (1/4)

9.52 (3/8)

Max. allowable tubing length at shipment

Outdoor Unit

Indoor Unit

300

569

645

921

898

200

790

285

280

970

0.229

43.0

360

12.5

386

40.0

14.0

0.098

Refrigerant Tube Kit / Accessories

Narrow tube

Wide tube

Refrigerant

mm (in.)

Tube Diameter

mm (in.)

Operation Sound

Electrical Rating

Air Circulation (High)

Moisture Removal (High)

Power Input

Available Voltage Range

Running Amperes

230 V

600

198 to 264

7.8

Dimensions & Weight

(*Qt = Quiet mode)

Refrigerant Tubing Connections

mmmmmmmmmmkgkg

Unit Dimensions

Package Dimensions

Weight

Width

Depth

Height

Width

Height

Shipping Volume

Cooling

Heating

600

1.8

Cooling

Heating

Depth

Net

Shipping

2.65

9,000

3.60

12,300

( 0.9 to 3.8 )

( 3,100 to 13,000 )

( 0.9 to 5.5 )

( 3,100 to 18,800 )

2.40

530

( 1.6 to 6.9 )

( 250 to 1,350 )

3.30

720

( 1.6 to 9.9 )

( 250 to 1,450 )

Vertical

dB-A

Indoor : Hi/Me/Lo/Qt*

Outdoor : Hi

Air Filter

Compressor

Refrigerant / Amount charged at shipment

Refrigerant Control

E.E.R.

W/W

5.0

Page 7

Indoor Unit SAP-KRV124EHDX Outdoor Unit SAP-CRV124EHDX

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Heating: Indoor air temperature 20°C D.B.

Outdoor air temperature 7°C D.B. / 6°C W.B.

( 3,100 to 20,500 )

11,900

( 3,100 to 14,300 )

3.50

( 0.9 to 4.2 )

Power Source

220 to 240V Single-Phase 50Hz

Voltage Rating

230 V

630

Performance

Cooling

Heating

Capacity

4.80

16,400

( 0.9 to 6.0 )

BTU/h

Moisture Removal (High)

Liters/h

Air Circulation (High)

m3/h

Heating

Available Voltage RangeV198 to 264

Electrical Rating

Cooling

2.0

Power Input

Running Amperes

Power Factor%95

C.O.P.

W/W-4.21

Compressor Locked Rotor Amperes

7.8

Features

Controls / Temperature Control

Microprocessor / I.C. Thermister

Control Unit

Wireless Remote Control Unit

Timer

24-Hour ON or OFF Timer, 1.2.3.5-Hours OFF Timer

Fan Speeds

Indoor / Outdoor

Auto and 3 steps

Airflow Direction (Indoor)

Auto

Horizontal

Vertical

Air Filter

Washable, Anti-Mold

Compressor

DC Twin Rotary (Inverter)

R410A / 1,380

Refrigerant Control

Electric Expansion Valve

Refrigerant / Amount charged at shipment

Refrigerant Tubing Connections

Max. allowable tubing length at shipment

41 / 38 / 30 / 22

(*Qt = Quiet mode)

Outdoor : Hi

Operation Sound

dB-A

Refrigerant

Narrow tube

mm (in.)

6.35 (1/4)

Tube Diameter

Wide tube

mm (in.)

9.52 (3/8)

Refrigerant Tube Kit / Accessories

Optional / Air Clean Filter

Indoor Unit

Outdoor Unit

Dimensions & Weight

Unit Dimensions

Height

300

Width

898

790

386

645

Width

970

921

Height

280

0.229

40.0

Shippingkg43.0

Netkg Shipping Volume

0.098

Weight

Depth

360

12.5

14.0

Package Dimensions

Depth

40 / 38 / 30 / 2250Flare Type

7.5

200

285

569

Indoor : Hi/Me/Lo/Qt*

( 1.6 to 9.9 )

( 250 to 1,545 )

875

( 1.6 to 7.8 )

( 250 to 1,435 )

5.20

1,140

4.00

E.E.R.

W/W

4.0

Page 8

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit SAP-KRV94EHDX

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Over-Heat Protection

Micro F

VAC

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

1.1

Face Area

0.272

Coil

Rows

Fin Pitch

Heat Exchanger Coil

Microprocessor

250V 3.15A

Control Circuit Fuse

Controls

1 ... D100 / L677

RCS-4HVPDXS4EE

Fan

Cross-Flow

Remote Control Unit

(Ambient Temp. 25oC )

Each Pair of Terminal : 70 +/- 7%

Control PCB

CB-KRV94EHDX

Part No.

Fan Motor

MP24Z2

DC 5V

Coil Resistance

Ohm

For Left Flap

MP24Z2

Safety Device

Rating

Type

Model

For Right Flap

For Upper Flap

For Lower Flap

Over- Current Protection

(Ambient Temp. 20oC)

Nominal Output

Coil Resistance

Ohm

Type

1,200 / 1,200

Model ... Q'ty

No. of Poles

SIC-39CVL-D847-3 ... 1

Flap Motor

Type

Stepping Motor

Rough Measure RPM (Cool / Heat )

Run Capacitor

Type

DC Motor

Q'ty ... Dia. and Length

Panel Motor

Type

Stepping Motor

Model

MP35EA

(Ambient Temp. 25oC)

MP24Z5

MP24Z1

Rating

DC 12V

Coil Resistance

Ohm

Each Pair of Terminal : 130 +/- 7%

Page 9

Indoor Unit SAP-KRV124EHDX

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Over-Heat Protection

Micro F

VAC

Coil

Rows

Heat Exchanger Coil

Aluminum Plate Fin / Copper Tube

Type

Stepping Motor

Over- Current Protection

Type

DC Motor

No. of Poles

Model ... Q'ty

Q'ty ... Dia. and Length

Rough Measure RPM (Cool / Heat )

1,250 / 1,250

SIC-39CVL-D847-3 ... 1

RCS-4HVPDXS4EE

Cross-Flow

1 ... D100 / L677

Fan Motor

Type

Remote Control Unit

Fan

Type

Internal Controller

Yes

Control Circuit Fuse

Control PCB

CB-KRV124EHDX

Part No.

Microprocessor

250V 3.15A

Controls

MP24Z5

Model

MP35EA

Type

Stepping Motor

Panel Motor

For Upper Flap

For Lower Flap

Flap Motor

Nominal Output

Yes

Run Capacitor

Safety Device

Coil Resistance

Ohm

(Ambient Temp. 20oC)

Model

For Right Flap

MP24Z2

For Left Flap

MP24Z2

MP24Z1

Rating

DC 5V

Coil Resistance

Ohm

Each Pair of Terminal : 70 +/- 7%

(Ambient Temp. 25oC )

Coil Resistance

Ohm

Each Pair of Terminal : 130 +/- 7%

Rating

DC 12V

(Ambient Temp. 25oC)

Face Area

0.272

Fin Pitch

1.1

Page 10

2-2-2. Outdoor Unit

Outdoor Unit SAP-CRV94EHDX

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Ohm

Micro F

VAC

RED - WHT : 77.5

WHT - BLU : 77.5

BLU - RED : 77.5

Type

Over- Current Protection

Micro F

VAC

DC Motor

Q'ty ... Dia.

Compressor

Type

Crankcase Heater

Safety Device

Rough Measure RPM (Cool / Heat)

Run Capacitor

Type

Model ... Q'ty

No. of Poles

Ohm

Nominal Output

Coil Resistance

750 / 750

Control PCB

CB-CRV94EHDX

Part No.

Fan Motor

Type

Compressor Model / Nominal Output

Compressor Oil ... Amount

Coil Resistance (Ambient Temp. 20oC)

Heat Exchanger Coil

Microprocessor

250V 25A

Control Circuit Fuse

Controls

1 ... D420

Fan

Propeller

(Ambient Temp. 20oC)

DAJ12-55J71-CR ... 1

Face Area

0.452

Coil

Rows

Fin Pitch

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

1.3

Safety Device

Yes

Run Capacitor

Operation cut-off control in abnormal ambient Temp.

Compressor Discharge Temp. Control

CT (Peak current cut-off control)

External Finish

Acrylic baked-on enamel finish

DC Twin Rotary (Hermetic)

C-6RVN93H0Q / 1,050W

FV50S ... 350

R - S : 0.482

S - T : 0.482

T - R : 0.482

Yes

Page 11

Outdoor Unit SAP-CRV124EHDX

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Ohm

Micro F

VAC

RED - WHT : 77.5

WHT - BLU : 77.5

BLU - RED : 77.5

Type

Over- Current Protection

Micro F

VAC

Q'ty ... Dia.

Compressor

Type

Crankcase Heater

750 / 750

Safety Device

Rough Measure RPM (Cool / Heat)

DAJ12-55J71-CR ... 1

DC Motor

Fan Motor

Run Capacitor

Ohm

Nominal Output

Coil Resistance

(Ambient Temp. 20oC)

Type

Model ... Q'ty

No. of Poles

Safety Device

CT (Peak current cut-off control)

Compressor Discharge Temp. Control

Operation cut-off control in abnormal ambient Temp.

Control PCB

CB-CRV124EHDX

Part No.

Type

Compressor Model / Nominal Output

Compressor Oil ... Amount

Coil Resistance (Ambient Temp. 20oC)

DC Twin Rotary (Hermetic)

C-6RVN93H0Q / 1,050W

Fin Pitch

Heat Exchanger Coil

Microprocessor

250V 25A

Control Circuit Fuse

Controls

1 ... D420

Fan

Propeller

Yes

Internal Controller

Aluminum Plate Fin / Copper Tube

1.3

Yes

Run Capacitor

External Finish

Acrylic baked-on enamel finish

Face Area

0.452

Coil

Rows

Yes

FV50S ... 350

R - S : 0.482

S - T : 0.482

T - R : 0.482

Page 12

2-3. Other Component Specifications

Indoor Unit SAP-KRV94EHDX

SAP-KRV124EHDX

Outdoor Unit SAP-CRV94EHDX

SAP-CRV124EHDX

0102030405060708090

100

120

140

160

180

200

15 20 25 30 35 40

Indoor air temp sensor

(Model:DTN-TKS223Y TH1)

Humidity sensor

(Model:C10-M52R-SY)

Indoor heat exchanger sensor

(Model:DTN-TKS223Y TH2)

Compressor temp sensor

(Model:1FA4V2E033800)

Resistance (k ohm)Resistance (k ohm)

Resistance (k ohm)

Temperature ( C)

Suction temp sensor

(Model:1FA4V2E033800)

Outdoor air temp sensor

(Model:8FA0525920400)

Outdoor heat exchanger sensor

(Model:8FA0525920400)

-20-15-

10-50 5101520

Temperature ( C)Relative Humidity (%RH)

Resistance (k ohm)

30 35 40 45 50 55 60 65 70 75 80 85 90

100

1000

25 C

Page 13

300

898

890

200

399 355

898

450

190

80 24

134

17.5

243

Air Intake

Air Outlet

(dia.65)

Drainhose dia.18

Wide tube dia.9.52 (3/8")

Narrow tube dia.6.35 (1/4")

Power Cord

During Operation

3. DIMENSIONAL DATA

Indoor Unit SAP-KRV94EHDX

SAP-KRV124EHDX

Unit: mm

Page 14

Outdoor Unit SAP-CRV94EHDX

SAP-CRV124EHDX

Unit: mm

790

569

295

608

310

336

285

ID:19

ID:18

ID:12

109

176

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

Wide tube service valve dia. 9.25 (3/8")

Outdoor temp sensor

Page 15

Compressor

4-way valve

Accumulator

Wide tube service valve

Wide tube

O.D.

9.52 mm (3/8 ")

Narrow tube service valve

Narrow tube

O.D.

6.35 mm (1/4")

Heat exchanger

Muffler

Capillary tube for split flow

Cooling cycle

Heating cycle

Defrosting cycle

Indoor unit Outdoor unit

Electric

expansion

valve

Modulator

2-way

valve

Strainer

Muffler

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit SAP-KRV94EHDX

SAP-KRV124EHDX

Outdoor Unit SAP-CRV94EHDX

SAP-CRV124EHDX

Insulation of Refrigerant Tubing

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

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

Wide tube

Thickness: Min. 8 mm

Insulation

Narrow tube

Thickness: Min. 8 mm

IMPORTANT

CAUTION

Page 16

Indoor air temperature 20 C D.B. Outdoor air temperature 7 C D.B. / 6 C W.B.

Indoor air temperature 27 C D.B. / 19 C W.B. Outdoor air temperature 35 C D.B. / 24 C W.B.

5. PERFORMANCE DATA

5-1. Temperature Charts

Indoor Unit SAP-KRV94EHDX Outdoor Unit SAP-CRV94EHDX

Cooling Characteristics Heating Characteristics

Outdoor inlet air D.B. temp.( C)

Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.( C)

Operating current (A)

Indoor discharge air temperature ( C)

Outdoor inlet air D.B. temp.( C)

Low pressure at wide tube service valve

MPa (kgf/cm

High pressure at wide tube service valve

MPa (kgf/cm

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

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

NOTE

Cooling: Heating:

30 35 40

1.2

(11.2)

1.3

(12.2)

1.1

(10.2)

1.0

(9.2)

°C

IndoorAirTemp.

30°C

Outdoor fan speed

HighLow

25 30 35 40

°C

IndoorAirTemp.

30°C

°C

Outdoor fan speed

HighLow

25 30 35 40

°C

IndoorAirTemp.

30°C

Outdoor fan speed

HighLow

50 510152025

3.5

(34.7)

3.0

(29.6)

2.5

(24.5)

2.0

(19.4)

°C

IndoorAirTemp.

23°C

50 510152025

°C

IndoorAirTem

23°C

°C

50 510152025

°C

IndoorAirTemp.

23°C

Page 17

Indoor air temperature 20 C D.B. Outdoor air temperature 7 C D.B. / 6 C W.B.

Indoor air temperature 27 C D.B. / 19 C W.B. Outdoor air temperature 35 C D.B. / 24 C W.B.

Indoor Unit SAP-KRV124EHDX Outdoor Unit SAP-CRV124EHDX

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

Low pressure at wide tube service valve

MPa (kgf/cm

High pressure at wide tube service valve

MPa (kgf/cm

Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.( C)

Operating current (A)

Indoor discharge air temperature ( C)

Cooling Characteristics Heating Characteristics

NOTE

Cooling: Heating:

30 35 4025

Outdoor fan speed

HighLow

1.2

(11.2)

1.3

(12.2)

1.1

(10.2)

1.0

(9.2)

°C

IndoorAirTemp.

30°C

25 30 35 40

°C

IndoorAirTemp.

30°C

°C

Outdoor fan speed

HighLow

25 30 35 40

°C

IndoorAirTemp.

30°C

Outdoor fan speed

HighLow

50 510152025

3.5

(34.7)

3.0

(29.6)

2.5

(24.5)

2.0

(19.4)

°C

IndoorAirTemp.

23°C

50 510152025

°C

IndoorAirTem

23°C

°C

50 510152025

°C

IndoorAirTemp.

23°C

Page 18

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20 C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27 C Fan speed : High

Cooling

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

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

5-2. Air Throw Distance Charts

Indoor Unit SAP-KRV94EHDX

012345678910

0123456789

Page 19

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20 C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27 C Fan speed : High

Cooling

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

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

Indoor Unit SAP-KRV124EHDX

012345678910

0123456789

Page 20

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor Unit SAP-KRV94EHDX Outdoor Unit SAP-CRV94EHDX

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 50Hz Rating conditions Running amp. A 0.35

Power input kW 0.028

2.05

0.502

Rating conditions: Indoor air temperature: 27 C D.B. / 19 C W.B.

Outdoor air temperature: 35 C D.B.

Rating conditions: Indoor air temperature 20 C D.B.

Outdoor air temperature 7 C D.B. / 6 C W.B.

Rating conditions: Indoor air temperature: 27 C D.B. / 19 C W.B.

Outdoor air temperature: 35 C D.B.

Rating conditions: Indoor air temperature: 20 C D.B.

Outdoor air temperature: 7 C D.B. / 6 C W.B.

Heating

Cooling

2.4

0.530

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 50Hz Rating conditions Running amp. A 0.35

Power input kW 0.028

2.95

0.692

3.3

0.720

Indoor Unit SAP-KRV124EHDX Outdoor Unit SAP-CRV124EHDX

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 50Hz Rating conditions Running amp. A 0.35

Power input kW 0.028

3.65

0.847

Heating

Cooling

4.0

0.875

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 50Hz Rating conditions Running amp. A 0.35

Power input kW 0.028

4.85

1.112

5.2

1.140

Page 21

WWW W W W

WWW

Outdoor Unit : SAP-CRV94EHDX, CRV124EHDX

8FA2-5257-57900-0

WHT

ORG

WHT

BLK

REACTANCE

L2L1

OUT

(WHT)

T-RUN/TEST

(

BLK

)

COIL/OUTDOOR

(

WHT

)

COMP/SUCTION

(

WHT

)

DCFM

(

BLK

)

RV0RV1

DEF0

ACIN2

ACIN1

DEF1

25A

CONTROLLER

COMPRESSOR

MOTOR

BLK BLK

BLU

YEL YEL

YEL

RED

BLK

WHT

BLU

WHT

FERRITE

CORE

GRN/YEL

FAN MOTOR

Meaning of Abbreviations

SUCTION

THERMISTOR

COMPRESSOR

THERMISTOR

OUT DOOR

THERMISTOR

COIL

THERMISTOR

RED

(

PNK

)

BLU BLU

2WAY VALVE

COIL

4WAY VALVE

COIL

MAGNETIC COIL

2P-CONNECTOR (

WHT

)

2P-CONNECTOR (

BLK

)

312

WHT

BLK

GRN/YEL

RED

TERMINAL

PLATE

BLK

BLK BLK

GRY

RED

ORG

YEL

WHT

GRY GRY

1234

567

1234

56 7

1234

123

GND

123456789

ABBREV.

BLK

BLU

BRN

GRN/YEL

GRY

ORG

PNK

RED

VLT

WHT

YEL

MEANING

BLACK

BLUE

BROWN

GREEN/YELLOW

GREY

ORANGE

PINK

RED

VIOLET

WHITE

YELLOW

Indoor Unit : SAP-KRV94EHDX, KRV124EHDX

JOINT BOX

POWER

RELAY

BLU

BRN

GRN/YEL

TERMINAL

BASE

GRN/YEL

EVAPORATOR

EARTH PLATE

312

BRN

BLU GRN

RED

ORG

YEL

(

RED

)

NET

(

BLU

)

LAMP1

(

WHT

)

ROOM

/COIL

(

WHT

)

HUM

(

RED

)

SW2

(

BLU

)

PANEL

(

WHT

)

ION

(

WHT

)

(

WHT

)

DCM

(

BLU

)

FLAP1

(

WHT

)

JB1

(

WHT

)

JB2

(

WHT

)

CONTROLLER

JEM-A

(

WHT

)

1 3 5 7

1 3 2 4

RED

BLK

UV UNIT

123456789 123456789

IND LAMP

ASSY

(

WHT

)

WHT

GRY

123

123456789

56789

12345

THERMISTOR

(ROOM)

THERMISTOR

(COIL)

THERMISTOR

(HUM)

PANEL SW

PANEL MOTOR

BLK

ORG

WHT

8FA2-5257-53400-1

STEP3

BRN

RED

ORG

YEL

PNK

BLU

123

12345

123

1 2 3 4

123

WHT

RED

BLK

(

WHT

)

ION UNIT

BLK

ION

TERMINAL

(

WHT

)

SW ASSY

WHT

BLU

12345

WHT

RED

BLU

BLK

YEL

DC FAN MOTOR

123456789

1011121314151617181920

12345678910123456789

WHT

GRY

WHT

GRY

BLU

WHT

BLU

UPPER/LOWER

FLAP MOTOR

(UPPER)

UPPER/LOWER

FLAP MOTOR

(LOWER)

LEFT/RIGHT

FLAP MOTOR

(RIGHT)

LEFT/RIGHT

FLAP MOTOR

(LEFT)

(

WHT

) (

RED

)

(

WHT

) (

WHT

)

(

WHT

) (

WHT

)

(

WHT

) (

RED

)

FLAP4

(

BLU

)

FLAP3

(

WHT

)

FLAP2

(

BLU

)

FLAP1

(

PNK

)

123

12345 5

123

12345 5

123

12345 5

123

12345 5

123

12345

321 321

POWER SUPPLY

EVAPORATOR

GRN

6-2. Electric Wiring Diagrams

Indoor Unit SAP-KRV94EHDX SAP-KRV124EHDX Outdoor Unit SAP-CRV94EHDX SAP-CRV124EHDX

WARNING

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

Page 22

WARNING

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection

7-1-1. Indoor Unit

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

For stable operation of the air conditioner, do not install wall-mounted type indoor units less than

1.5 m from floor level.

AVOID:

direct sunlight.

nearby heat sources that may affect performance of

the unit.

areas where leakage of flammable gas may be

expected.

places where large amounts of oil mist exist.

DO:

select an appropriate position from which every corner

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

is best.)

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

select a location where tubing and drain hose have

the shortest run to the outside.

allow room for operation and maintenance as well as

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

install the unit within the maximum elevation

difference (H) above or below the outdoor unit and

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

detailed in Table 1 and Fig. 2.

Install the indoor unit more than 1 meter away from

any antenna or power lines or connecting wires used

for television, radio, telephone, security system, or

intercom. Electrical noise from any of these sources

may affect operation.

Table 1

Model

KRV94 / 124

* If total tubing length becomes 7.5 to 15 m, charge additional refrigerant (R410A) by 15 g/m. No additional charge of compressor oil is necessary.

Max. Allowable Tubing

Length at Shipment

(m)

7.5

Limit of Tubing

Length (L)

(m)

Limit of Elevation

Difference (H)

(m)

Required Amount of

Additional Refrigerant

(g/m)*

5 cm

min.

5 cm min.

15 cm min.

Front View

INDOOR UNIT

Tubing length (L)

OUTDOOR UNIT

Elevation difference (H)

CAUTION

Indoor unit

Floor level

Wall

Minimum height from floor level

1.5 m

Fig. 1

Fig. 2

Fig. 3

Page 23

Cushion rubber

Air intake Min. 5 cm

Air discharge

Min.

5 cm

Min. 20 cm

Valve side Min. 25 cm

Outdoor unit

Hot air

Heat source

Exhaust fan

Min. 2 m

Ground

Obstacle

Obstacle above

Air discharge

Air intake

Concrete or equal

About 10 cm

Min. 10 cm

Anchor bolts (4 pcs.)

About 40 cm

7-1-2. Outdoor Unit

Fig. 5a

Fig. 5b

Fig. 4

AVOID:

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

damp, humid or uneven locations.

DO:

position the outdoor unit in a protected location

where snow will not blow into it.

choose a place as cool as possible.

choose a place that is well ventilated.

allow enough room around the unit for air intake/

exhaust and possible maintenance. (Fig. 5a)

provide a solid base (level concrete pad, concrete

block, 10 40 cm beams or equal), a minimum of

10 cm above ground level to reduce humidity and

protect the unit against possible water damage and

decreased service life. (Fig. 5a)

Install cushion rubber under unit's feet to reduce

vibration and noise. (Fig. 5b)

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 3 meters.

Page 24

Indoor Unit Outdoor Unit

Terminal

Power supply

Terminal

Single-phase 50Hz

220 to 240VAC

(A)

(B)

(C)

Grounding line

WARNING

7-2. Recommended Wire Length and Diameter

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

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

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

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

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

Table 2

Cross-Sectional

Area (mm

)

(A)+(B) (A) Power Supply Wiring Length (m)

(B) Power Line Length (m)

Line Length (m)

Fuse or Circuit

Breaker Capacity

15A

3.5

CRV94

CRV124

Model

WIRING SYSTEM DIAGRAM

Fig. 6

CAUTION

WARNING

NOTE

Page 25

Remote control unit holder

Mounting screws 4 16 (included)

7-3. Remote Control Unit Installation Position

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

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

7-3-1. Mounting on a Wall

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

Fig. 7

Page 26

Fig. 8a

Fig. 8b

Fig. 8c

ON/OFF operation button

LED CLEANLED CLEAN

IONION TIMERTIMER OPR.OPR.

(FILTER)

LED CLEAN lamp

ION lamp

(FILTER lamp)

TIMER lamp

OPERATION lamp

RESET

7-4. How to Test Run the Air Conditioner

Use a sharp object when accessing ON/OFF and TEST buttons in the indoor unit.

After turning on power to the air conditioner, use the remote controller and follow the steps below to conduct the test run. (1) Either press the ON/OFF button on the indoor unit or use

the remote controller to start the Air Conditioner. (Figs. 8a and 8b)

(2) Press and hold down the TEST RUN button on the indoor

main unit controller until a beep is heard. At this time, all indicator lamps begin blinking.(Figs. 8a and 8c) If the outdoor unit has not started approximately 5

minutes after the start of the test run, execute self

diagnostics. To execute self diagnostics, while the unit is stopped press and hold down the TEST RUN button until a beep is heard. Self diagnostics begins when the TEST RUN button is released.

(3) Press the ON/OFF operation button to end the test run.

At this time, operation from the remote controller becomes possible.

IMPORTANT

FILTER RESET

OFF

TEST

ON/OFF operation button

TEST RUN button

Page 27

Arm

Front panel

Fig. 9

Flap

Screw cover

Screw

Grille

Fig. 10

Fig. 11

Front panel

Arm

Groove

Fig. 12

7-5. Remove the Grille to Install the

Indoor Unit

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

How to remove the grille

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

grasp the sections near the front panel arms on both sides, and then pull forward to remove the front panel. (Fig. 9)

(2) Remove the screw from the top right of the main

unit. Also remove the screws where the screw covers are open. (Fig. 10)

(3) Press the 3 tabs on the top of the grille to

disengage them. (Fig. 10)

(4) Pull the grille toward you to remove it. (Fig. 10)

How to replace the grille

(1) Insert the bottom of the grille into the flap, with the

flap at a more-or-less horizontal position.

(2) While aligning both edges of the grille with the

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

(3) Press the air outlet firmly with your hand to ensure

no gap exists between the main unit and grille.

(4) Tighten the screws and close the screw covers.

(5) Grasp the sections near the front panel arms on

both sides, hold the front panel so that it is nearly horizontal, bring the arm shafts into contact with the top of the grooves on the right and left sides of the air conditioner, and then push firmly until the arm shafts click into place. (Fig. 11)

(6) After closing the front panel, press firmly on the

parts indicated by the arrows to securely fasten the panel in place. (Fig. 12)

Check that no gap exists between the main unit and grille.

NOTE

Page 28

Fig. 13

Fig. 14

Fig. 15

Cover

Address-setting tab

FILTER RESETRESET

TEST

OFF

Test button

ON/OFF operation button

8. MAINTENANCE

8-1. Address Setting of the Remote

Control Unit

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

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

Switching the remote controller address

(1) Open the cover on the bottom of the remote

controller. Break the address change tab to switch the address to B. (Fig. 13)

(2) Insert dry cell batteries into the remote controller

and attach the cover.

(3) Open the front panel on the stopped indoor unit,

and use a sharp object to press the TEST button on the main unit controller. Verify that the indoor unit produces the "beep beep" signal-reception sound, then release the button. (Fig. 14)

(4) Next, within 5 seconds after the beep sound is

heard from the indoor unit, press the remote con troller ON/OFF button and verify that the 5 beeps signal-reception sound occurs again. (Fig. 15)

NOTE

Page 29

Drain hose

Stopper

Drain cramp

Turn the hose

Drain hose

Stopper

8-2. Removing and Mounting the Drain Hose

(1) Before removing the drain hose, remove the cramp from the stopper to check the location of the drain cramp at

the end of the hose, and pull the hose out while turning it.

(2) To mount the drain hose, insert the hose all the way into the outlet of the drain pan with the drain cramp face

down. Then put it in place so that the drain cramp is placed beneath the stopper. After mounting it, be sure to check that the drain hose is firmly mounted.

Page 30

Temperature /Humidity sensor

Operating box

Electrical component box pad plate 1

Electrical component box pad plate 2

P. C .Board

Electrical component box

Connectors

Electromagnetic valve coil connector

Ground wire terminal

Heat exchanger sensor

Screw for the terminal cover

Te r minal cover

Inter-unit wiring

Lower right cover

(1)

(2)

Flap

Screw (Do not forget.)

Screw cover

Screws

Front panel

Arm

Grille

Remove this cover in the order of steps (1) and (2).

()

Screw for the electrical component box

8-3. Removing the Electrical Component Box

(Before replacing the P.C.Board with another, remove the electrical component box from the main body and its cover plate.)

(1) Remove the grille. (2) Prior to remove the electrical component box, carry out the following:

(2-1) Remove the operating box of the main body and electrical component box pad plate 1. (2-2) Disconnect all the connectors located on the P.C.Board. (2-3) Take wiring out of the electrical component box. (2-4) Fold down the electrical component box pad plate 2 forward

and remove the electromagnetic valve coil connector.

(2-5) Remove the temperature/humidity sensor.

(2-6) Remove the heat exchanger sensor and

ground wire terminal.

(2-7) Remove screws for the electrical

component box.

(2-8) Remove the lower right cover. (2-9) Remove the terminal cover and remove the

inter-unit cables.

Removing the grille

1. Fully open the front panel, pulls the front panel while holding its part adjacent to the arm, and remove the front panel.

2. Remove the screw on top right of the main body. Also remove the screw found when the screw cover is opened.

3. Push three tabs on top side of the ornamental panel to remove them.

4. Pull the grille forward to remove it as it is.

Page 31

Hook

Ta b

Electrical component box

Hook

Ta b

Electrical component box

Electrical component box pad plate 3

Electrical component boxpad plate 2

Indicator lamp

Electrical component box cover

Remove these two tabs and lightly expand the electrical component box cover, and the remaining tab can readily be removed.

(3) Removing the electrical component box.

(3-1) Slightly expand the side of the main body to the

right side and unhook the tabs.

(3-2) Holding the bottom of the electrical component

box while keeping the main body as it is in (3-1) above, release the tab at the top of the electrical component box.

(4) Removing the P.C.Board

(4-1) Remove the indicator lamp, electrical component

box pad plates 3 and 2.

(4-2) Remove the electrical component box cover.

To replace the panel motor, proceed to "8-4. Removing the Panel Motor".

NOTE

Page 32

Electrical component box cover

Panel motor

P. C .Board

Electrical component box cover

P. C .Board

Remove this tab first, and then remove other tabs while slightly raising the P.C.Board.

Ta b

Cap (resin)

Screw

Panel motor

To the P. C .Board

Electrical component box cover

(4-3) Disconnect all the connectors on the

P. C .Board.

(4-4) Replace the P.C.Board.

8-4. Removing the Panel Motor

Remove the electrical component box cover according to the previous section. And carry out the procedure up to the "step (4-2) in 8-3. Removing the electrical component box."

(1) Disconnect and remove the connector for the

lead wire of the panel motor at the P.C.Board side.

(2) Remove the screw on the panel motor and

cap (resin).

When mounting a new panel motor, make sure that the gear of the panel motor and that of the electrical component box cover firmly engage with each other.

(4-5) Pulling out the lead wire after replacing the

P. C .Board.

NOTE

Page 33

Drain pan

Frame center lower lever Remove it by sliding toward you.

Apply an upper push around here (insulation material), and the hook can be removed.

Press the back right in the arrow direction, and the hooked part can be released.

Press the back left in the arrow direction, and the hooked part can also be released.

8-5. Removing and Mounting the Drain Pan (Air Outlet Ass'y)

8-5-1. Removing the Drain Pan (Air Outlet Ass'y)

(1) Remove the hooks (1-1) to (1-3) which secure the drain pan.

(1-1) Center part below the air outlet

(1-2) Right side drain pan

(1-3) Left side drain pan

Page 34

Heat exchanger

Insert the drain pan into the heat exchanger with its back tilting down.

Drain pan

Insulation material

Frame

Drain pan

If it is hard to remove, try to pull down either of these two edges first.

Heat exchanger

While the drain pan is being inserted, part of insulation material will touch the frame.

Push up the insulation material with your finger so that it is put into place (for both sides).

8-5-2. Mounting the Drain Pan (Air Outlet Ass'y)

(1) Insert the drain pan from the bottom of the heat

exchanger.

(3) Remove the drain hose according to "(1) of 8-2.

Removing and Mounting the Drain Hose."

(2) Remove the drain pan from the main body so as to

roll over the left side first toward you.

Be careful not to spill the remaining water in the drain pan.

NOTE

Page 35

Bottom of left back of the drain pan

Bottom of right back of the drain pan

Negative ion P.C.Board

Negative ion electrodes

Drain pan (Air Outlet Ass'y)

Negative ion electrodes

Cables cannot removed unless this part is removed.

Remove the lead wire connector.

Negative ion P.C.Board

Remove the ring connector.

This connector was disconnected from the P.C. Board of the electrical component box.

Negative ion electrodes

Scope of service supply

(2) Secure the drain pan to the hook.

(2-1) Push up A and B in the figure one by one

from underneath to secure them to the hook.

(2-2) Also secure C to the hook.

8-6. Removing the Negative Ion Generator

Remove the negative ion electrodes and negative ion P. C .Board from the drain pan (Air Outlet Ass'y).

The negative ion generator is supplied with a set of negative ion electrodes and negative ion P.C.Board.

NOTE

Page 36

(

()

)

Another hook also exists to this side.

Fan mounting screw

Fan

Fan motor mounting bracket

Fan motor bracket

Hook

Ta b

Fan

Fan motor lead wire

Connect it with the wire trailing down.

Fan motor

Fan motor mounting bracket

3~4mm

Hex wrench

Loosen the screw as you use a flashlight.

Hex wrench Fan mounting screw

tightening torque:

2.45+/-0.49N-m (25.0+/-5kgf-m)

8-7. Removing and Mounting the Fan Motor

8-7-1. Removing the Fan Motor

Remove the electrical component box cover according to the previous section.

(1) Loosen the fan mounting screw with a hex

wrench of 2.5mm opposite side distance.

(2) Remove three screws which secure the fan

motor.

(3) While removing the fan motor mounting bracket,

pull out the fan motor shaft as well.

(4) Remove the tab of the fan motor bracket and

separate into two parts.

8-7-2. Mounting the Fan Motor

To mount the fan motor, reverse the steps for removal.

Page 37

Heat exchanger

Fan bearing

Fan

When sliding the heat exchanger or removing the fan, be sure to wear work gloves so as not to injure your hands by fins of the heat exchanger.

8-8. Removing the Fan

Be sure to proceed after having removed the drain pan (Air Outlet Ass'y) and fan motor according to sections "8-5. and 8-7."

(1) Remove three screws.

(2) Uphold the left side of the heat exchanger so that it is

not seated anywhere (so as to remove the fan). Pull the fan bearing toward you and remove it, and remove the fan as pulling it from underneath.

NOTE

Page 38

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

How to Disconnect

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

How to Connect

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

Pull the cover upward

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

8-9. Disconnecting and Connecting Positive Connector for Outdoor Unit

Page 39

Emergency operation SENSOR DRY

AUTO cooling/heating operation

Selecting the operation mode

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

SENSOR DRY operation

DRY operation is as shown in the figure below.

PAM- control

In order to further improve inverter performance, control is

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

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

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

Monitoring operation takes place when the room temperature

is below 15 C, or more than 3 C below the set temperature.

When the monitoring range is entered, the compressor stops,

and the indoor fan operates with 1/f fluctuation.

DRY A

DRY B

Monitor

Conditions are monitored at all times when the room temperature is below 15 C.

Load

COOL zone

A zone

B zone

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

The set temperature is 2 C below the detected room

temperature in the case of cooling operation, and 2 C above the room temperature in the case of heating operation. The flap and fan speed settings are AUTO.

(GREEN) (RED) (Lamp Off)

COOL HEAT STOP

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.

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.

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

Zone A

Zone B

Zone C

Zone B

Zone A

OFF OFF

Compressor

Operation mode

Room temp.

HeatingCooling Cooling

ON ON ON

More than

1 hour

Within 1 hour

Set temp.

Example

Example of operation in AUTO mode with the set room temperature

at 23 C.

To operate the system, press the OPERATION button,

which is also used as the receiver, below the unit display.

Each time this button is pressed, the OPERATION lamp changes color to indicate the type of operation. Select the desired type of operation.

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

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

NOTE

DRY A

DRY Band

9. FUNCTIONS

9-1. Operation Functions

Page 40

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 1 C when 30 minutes have passed after the selection was made, and then another 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.

HEAT mode

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

HIGH POWER

NIGHT SETBACK

Lamp colors

Timer backup

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

HIGH POWER operation from remote controller

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

OPERATION lamp

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

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

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

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

Frequency

MAX

Start End

Time

30 min. 5 min.

Setting temperature

Press the NIGHT SETBACK button

TIMER lamp Green

ION lamp Green

ION lamp (FILTER) Red

LED CLEAN lamp Green

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

alternately

NOTE

30 min. 30 min.

Time

1 C

Setting temperature

Press the NIGHT SETBACK button

30 min. 30 min.

Time

2 C

1 C

Page 41

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.

Cold-air prevention during heating

Compressor discharge temperature control

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.

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 6 C.

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

Area: Automatic capacity control

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

Area: Automatic capacity control

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

Area: Frequency increase is prohibited.

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

area.

* When the temperature drops to below 2 C (continuously for 2

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

The Freeze Prevention Control during the Low Ambient Cooling Mode (outside air temperature:15 C or lower) is as follows. The compressor stops when the temperature of indoor heat exchanger becomes less than 2 C. The compressor restarts when the temperature of indoor heat exchanger becomes 8 C or higher.

Approx.

Normal operation

At start of operation

High

Stopped

Indoor heat exchanger A. Control start B. Control end

Set fan speed

25 30 Approx. 40

abc d

abcd

Indoor heat exchanger

temperature ( C)

Indoor heat exchanger

temperature ( C)

Indoor heat exchanger

temperature ( C)

Approx.

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

after the thermostat turns OFF.

Normal 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 20 C or higher, or until the room temperature reaches 15 C or higher.

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

Area: Automatic capacity control.

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

Area: Further frequency increase is prohibited.

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

area.

* The compressor will stop if the temperature of the compressor

discharge exceeds 120 C due to shortage of gas or other reason.

Approx.

101

abc d

Compressor discharge temperature ( C)

Approx.

NOTE

9-2. Protective Functions

Page 42

Heating operation

Frost sensing

Non-stop defrosting

Defrosting Sequence

Releasing of defrosting

Outdoor fan ON 4-way valve Heating mode

Frosting is assumed according to the outdoor temp.,outdoor heat exchanger temp.,and operation time.

Outdoor heating exchanger temp. is over 14 C. Defrosting operation lasts 12 minutes (maximum). 4-way valve is Heating mode. Outdoor fan is ON. 2-way valve OFF

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

Compressor ON Outdoor fan OFF Indoor fan OFF 4-way valve Heating mode

Non-Stop Defrosting

Mode : Cooling

Defrost detection and release

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.

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

Cooling Dry Heating

Peak current cut-off trips 17.5

Hz down 12.2 14.0

(A)

CT (Peak current cut-off control)

Outdoor heat exchanger temp.

Ambient temp.

Frosting

area

NOTE

The following three protective actions are available to prevent the compressor from operating with abnormal loads. At that time, they initiate thermo-off (stopping the outdoor unit) of the air conditioner.

Cut-off action

Low ambient temp.

cut-off

Thermo-off

t : ambient temp

Thermo-on

t : ambient temp

t -22 C t > -18 C

Operation Cut-Off Control in abnormal ambient temperature

2-way valve ON

t 25 C

Mode : Heating

Cut-off action

High ambient temp.

cut-off

Thermo-off

t : ambient temp

Thermo-on

t : ambient temp

t < 24 C

t -20 C

Low ambient temp.

cut-off

t >

16 C

Page 43

10. TROUBLESHOOTING

10-1. Precautions before Performing Inspection or Repair

NOTE

PROCEDURE

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

High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter).They retain an electrical charge

(charging voltage DC 310 V) 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.

After repairs are carried out, be sure to press and hold the TEST RUN button until the buzzer sounds 2 times to erase the

diagnosis results.

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 ROM socket insertion problem, or the ROM has not been installed. Make sure the ROM is in existence.

2. The failure mode is stored in memory even when the power is not ON. Follow the procedure below to perform diagnostics.

Turn the power supply switch ON. However, the A/C itself should remain stopped.

Press and hold the TEST RUN button on the main unit controller until the buzzer sounds 1 time. At this time, releasing the TEST RUN button starts self-diagnostics.

If there is a sensor failure or a protective function has activated, self-diagnostics lamps 1, 2, and 3 will illuminate in the following pattern: 5 seconds blinking (illuminated) + 2 seconds OFF. (Buzzer sounds once while lamps are OFF.)

If there is no trouble, then self-diagnostics lamps 1, 2, and 3 do not illuminate, and the buzzer does not sound.

< IMPORTANT>

Diagnostics is completed when the buzzer sounds 3 times.

After repairs are carried out, be sure to press and hold the TEST RUN button until the buzzer sounds 2 times. When the TEST RUN button is released, the buzzer sounds 1 long beep, and the diagnosis results are erased.

10-2. Method of Self-Diagnostics

If the indoor unit operation lamp is blinking every 0.5 seconds, follow the procedure below to perform detailed trouble diagnostics.

TEST RUN button

Main unit controller

NOTE

ON/OFF operation button

Page 44

TIMER lamp

(2)

OPERATION lamp

(1)

ION lamp

(3)

If there is no trouble, the lamps neither blink nor illuminate. Since the indications cover various units, the corresponding parts listed below may not be present in some models.

If the operation lamp (orange) continues to blink immediately after when the power source has been supplied to the air conditioner, there might be trouble with the external ROM (E14) in the indoor unit.

Indication on indoor unit

....

OFF

TimerIon Operation

( 3 ) ( 2 ) ( 1 )

Code Diagnostics item Diagnostics contents

S01

Room temperature sensor failure

Sensor open circuit or short circuit Contact failure at connector or open circuit at terminal crimping location (short-circuit

detection only for the humidity sensor)

(1) (2)

External ROM data failure External ROM installation failure

PAM circuit abnormal voltage Protection for current

4-way valve failure (heat pump model only)

Indoor heat exchanger temperature sensor disconnected.

Service valve not opened. Shortage of refrigerant

Open phase Outdoor circuit board failure

Miswiring AC power failure (2) Blown fuse (3) Power relay failure (4) Indoor or outdoor circuit board failure

(1) (5)

Electric expansion valve failure Capillaries choked Shortage of refrigerant

Miswiring in inter-unit Outdoor circuit board failure

Operating current is 20 A or higher.

(1) (2)

(1) (2) (3)

(1)

Contact failure at connector Outdoor circuit board failure

Indoor fan system failure Shortage of refrigerant Low-temperature operation

(1) (2)

(1) (2) (3)

Locked fan motor Contact failure at connector

Noise, instantaneous power blackout, or power waveform error due to lightning or other factor

(1)

(2)

(1) (2)

(3)

HIC or power Tr failure Outdoor fan does not turn. Instantaneous power outage Service valve not opened. Outdoor fan blocked. Continuous overload operation Compressor failure Outdoor circuit board failure

(1) (2) (3) (4) (5) (6) (7) (8)

Indoor heat exchanger sensor failure

Humidity sensor failure

Compressor temperature sensor failure SH(Suction) sensor failure

Outdoor heat exchanger sensor failure

Outdoor air temperature sensor failure

Indoor/outdoor communications failure (serial communications)

Outdoor unit external ROM failure

Peak current cut-off

HIC circuit failure

PAM circuit failure

Outdoor system communications failure

Compressor discharge overheat prevention activated.

Indoor fan operating failure

No-refrigerant protection

DC compressor drive circuit failure

Outdoor fan operating failure

Freeze-prevention operation activated.

4-way valve switching failure

Indoor zero-cross failure

Electrical current detection failure

Operating frequency is 45 Hz or higher and less than 0.5 A of current is flowing.(1)

S02

S03

S04

S05

S06

S07

E01

E02

E03

E04

E05

E06

E07

E08

E09

E10

E11

E12

E13

....

Blinking

....

Illuminated

NOTE

(1) Self-diagnostics Lamps

Page 45

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

10-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

(2) Checking the outdoor unit

(3) Checking the serial communications

Using the TEST/T-RUN terminals

Check the indoor unit.

Is the fuse blown?

ControlNo. Check items (unit operation)

Replace the controller.

Replace the circuit

board or the fuse.

No indicators illuminate and the indoor fan does not rotate.

Check the power voltage.

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).

Fully opens the electric expansion valve.

Press EMERGENCY OPERATION button of main unit controller, or start operation using the remote controller.

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

Press and hold the TEST RUN button on the main unit controller until the buzzer sounds 1 time.

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

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

ControlNo. Check items (unit operation)

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

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

Turn the power OFF before performing short circuiting work.

During the self-diagnostics check, the check results are the first indication when the TEST RUN button is pressed until the buzzer sounds 1 time, after the power supply is ON.

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

Before performing the above checks, press the ON/OFF operation button of indoor unit or remote controller to operate the air conditioner, and check that AC 220 to 240V is output to terminals 1 and 2. If it is not output, there is a failure related to the indoor unit power.

1 The control panel LED (red) must illuminate.

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

The compressor and fan motor must turn ON about 5 seconds later after the terminals are shorted.

Normal

Blown

TEST/MV T-RUN terminals

TEST/MV T-RUN COM

Circuit board

Probable location of malfunction

Indoor unit circuit board failure

Outdoor unit circuit board failure

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

Outdoor unit circuit board failure

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

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

Initial self-diagnostics

Control 1 Control 2

....

OFF

....

Blinking

....

Illuminated

Ion

( 3 )

Timer

( 2 )

Operation

( 1 )

Ion

( 3 )

Timer

( 2 )

Operation

( 1 )

Ion

( 3 )

Timer

( 2 )

Operation

( 1 )

Page 46

10-4. Trouble Diagnosis of Indoor and Outdoor Fan Motor

10-4-1. Indoor Fan Motor

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

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

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

(Diagnostic procedure)

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

unit controller (3 locations).

(Diagnostic results)

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

(Replace the controller .)

(Reference) DC motor connector pin arrangement

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

[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.

Important:

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

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

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

Measurement location

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

Normal value

Page 47

10-4-2. Outdoor Fan Motor

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

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

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

(Diagnostic procedure)

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

unit controller (3 locations).

(Diagnostic results)

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

(Replace the controller .)

(Reference) DC motor connector pin arrangement

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

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

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

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

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

(Remedy for symptom 3 to 5)

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

Important:

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

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

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

Measurement location

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

Normal value

Page 48

10-5. Noise Malfunction and Electromagnetic Interference

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

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

(1) Noise malfunction

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

Locations most susceptible to noise

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

2. Locations near amateur radio (short wave) stations

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

Correction

(The fundamental concept is to make the

system less susceptible to noise.)

- Insulate for noise or

distance from the noise source. -

1. Use shielded wires.

2. Move unit away from the noise source.

Trouble

Either of the following trouble may occur.

1. The unit may stop suddenly during operation.

2. Indicator lamps may flicker.

(2) Electromagnetic interference

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

Locations most susceptible to noise

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

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

3. Locations where television and radio signals are weak.

Correction

1. Select a separate power source.

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

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

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

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

6. Use a signal booster.

Trouble

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

2. Static occurs in the radio sound.

Page 49

Flap

Upper right screw

Grille

Screw cover

Screw

Lever

Front panel

Sub-panel

Holding the part of the front panel adjacent to the arm. Next, press the arm shaft against the upper part of the groove which is located on the main body while keeping the front panel almost horizontally, and push it firmly until it makes a sound of being seated.

Front panel (which is attached with a sub-panel on its rear side)

Arm

Groove

Arm shaft

Arm

Groove

Close the front panel, and push at the arrow to firmly fix it.

Loosen

Tighten

Loosen

10-6. Checking and Troubleshooting when the Front Panel fails to work

10-6-1. Checking the Front Panel when it fails to work during operation

(1) Is the grille mounted in place?

(Check in particular that the upper right screw is adequately tightened.)

(2) Are the five levers on the rear of the front panel

tightened? The figure shows the loosened condition. If the levers are in loosen, the front panel does not work correctly.

(3) Is the front panel correctly mounted?

Page 50

For details, see "8-3. Removing the electrical component box" in Maintenance section.

Electrical component box cover

P. C .Board Panel motor

Panel motor connector

NOTE

Judgment

When a measured coil resistance deviates from any of the listed values, replace the panel motor with new one.

Lead wire color

Coil Resistance(Ambient Temp.25 C) RED RED

130 +/- 7%

BRN BRN

ORG PNK YEL BLU

10-6-2. Making a Diagnosis of the Panel Motor

(1) If no abnormality was found in (1) to (3) of the previous section, then carry out diagnosis of the panel motor,

which activated the front panel.

(2) Remove the panel motor connector from the indoor P.C. Board.

(3) Measuring coil resistance of the panel motor

Carry out measurement of the resistances as listed below:

Page 51

Insulation tester

Probe

Clip

Ground wire

Terminal plate

Copper tube or metallic part

Clip

Insulation tester

Probe

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Copper tube or metallic part

Clip

Insulation tester

Probe

Clip

Insulation tester

Probe

Metallic part

From fan motor, compressor and other parts

11. CHECKING ELECTRICAL COMPONENTS

11-1. Measurement of Insulation

Resistance

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

11-1-1. Power Supply Cord

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

11-1-2. Indoor Unit

Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate. (Fig. 2)

11-1-3. Outdoor Unit

Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate. (Fig. 2) Note that the ground line terminal should be skipped for the check.

11-1-4. Measurement of Insulation

Resistance for Electrical Parts

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

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

NOTE

Page 52

Fuse

PCB Ass'y

Fig. 5

Fig. 6

Fuse

11-2. Checking Continuity of Fuse

on PCB Ass'y

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

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

Page 53

Flare tool for R410A

1.2

Conventional flare tool (R22)

Spacer

12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

12-1. Characteristics of New Refrigerant R410A

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

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

12-1-2. Components (mixing proportions)

HFC32 (50%) / HFC125 (50%)

12-1-3. Characteristics

Less toxic, more chemically stable refrigerant

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

Therefore, do not add new refrigerant.

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

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

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

12-2. Checklist before Servicing

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

Size of flare

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

CAUTION

A Specification

Diameter of tube D

Dia.6.35 (1/4")

Dia.9.52 (3/8")

Flare tool for R410A

0 to 0.5 mm

Conventional flare tool (for R22)

1.0 to 1.5 mm

Page 54

Tubing precautions

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

Never use 0.7mm-thick copper tubing or tubing which is less than 0.8mm 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

12-3. Tools Specifically for R410A

For servicing, use the following tools for R410A

Gauge manifold

Charging hose

Gas leak detector

Refrigerant cylinder

Charging cylinder

Refrigerant recovery unit

Vacuum pump with anti-reverse flow (*1)

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

unit when the power is off, is recommended.)

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

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

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

Electronic scale for charging refrigerant

Flare tool

Bender

Torque wrench

Cutter, reamer

Welding machine, nitrogen gas cylinder

Tools specifically for R410A

Tool Distinction Tool Name

Tools which can be com-

monly used for R22,

R407C, and R410A

CAUTION

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

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

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

To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, sizes of the service ports and flare nuts of the narrow tube service valve and wide tube service valve have been altered.

12-4. Tubing Installation Procedures

When the tubes are connected,

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

The following is the HAB oil generally used:

Esso: ZERICE S32

NOTE

Page 56

12-5. In Case of Compressor Malfunction

CAUTION

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

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

12-5-1. Procedure for Replacing Compressor

(1) Recovering refrigerant

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

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

(2) Replacing Compressor

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

(3) Checking for sealing

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

(4) Evacuation

Use a solenoid valve-installed vacuum pump

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

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

When using a vacuum pump with exhaust air volume more than 25L/min. and ultimate vacuum pressure rate of

0.05Torr:

Standard time for evacuation

(1) Recover refrigerant

(2) Replace compressor

(3) Check for sealing

(4) Evacuation

(5) Recharge

Length of tubing

Time

Less than 10 meters

More than 10 minutes

More than 10 meters

More than 15 minutes

Page 57

Valve

Single valve

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

Single valve (with siphon tube)

Charge with cylinder in normal position.

Liquid

Valve

Liquid

Charging

cylinder

Open

Refrigerant

cylinder

Liquid

NO!

CAUTION

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

CAUTION

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

(5) Recharging

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

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

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

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

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

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

Example:

In case of charging refrigerant to a unit requiring

0.76Kg using a capacity of a 10Kg cylinder, the minimum necessary amount for the cylinder is:

0.76 + 10 0.20 = 2.76Kg

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

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

Prepare an evacuated charging cylinder beforehand.

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

Configuration and characteristics of cylinders

Fig. 1

Fig. 2

Fig. 3

Page 58

Length of tubing

Time

Less than 10 meters

More than 10 minutes

More than 10 meters

More than 15 minutes

12-6. In Case Refrigerant is Leaking

CAUTION

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

(1) Detecting Leaks

Use the detector for R410A to locate refrigerant leak points.

(2) Recovering refrigerant

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

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

(3) Welding leaking points

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

Weld securely using flux and wax for R410A.

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

(4) Checking for sealing

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

(5) Evacuation

Use a solenoid valve-installed vacuum pump

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

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

When using a vacuum pump with exhaust air volume more than 25L/min. and ultimate vacuum pressure rate of

0.05Torr:

Standard time for evacuation

(6) Recharging

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

(2) Recover refrigerant

(3) Weld leaking points

(4) Check for sealing

(5) Evacuation

(6) Recharge

(1) Detect leaks

Page 59

12-7. Charging Additional Refrigerant

12-7-1. When Tubes are Extended

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

Charge additional refrigerant in liquid state only.

12-8. Retro-Fitting Existing Systems

12-8-1. Use of Existing Units

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

This will cause the air conditioner to

operate improperly and may result in a hazardous condition.

12-8-2. Use of Existing Tubing

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

do not use its existing tubing.

Instead,

completely new tubing must be used.

CAUTION

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

Page 60

INSTRUCTION MANUAL

SAP-KRV94EHDX + SAP-CRV94EHDX

SAP-KRV124EHDX + SAP-CRV124EHDX

(OI-852-6-4180-791-00-0)

APPENDIX

Page 61

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.

• One time or Everyday Timer

This timer can be set to automatically turn the unit on or off at only one set time (One time) or at a daily set time (Everyday).

• 1, 2, 3, 5-Hour OFF Timer

This timer can be set to automatically turn off the unit any time after 1, 2, 3 or 5 hours.

• Night Setback

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

• Automatic and 3-step Fan Speed

Auto/High/Medium/Low

• 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.

• Air Sweep Control

This function moves a flap up and down/left and right 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.

• CHILD LOCK

This function is to tamperproof and protect the unit from being incorrectly operated. All key access functions are invalid while this lock function is in operation.

• ION Operation

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

• LED Clean Operation

During operation, the UV anti-bacteria unit is activated for one hour 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)

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Page 62

Contents

Page

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

9. LED CLEAN Mode ................................................................................. 16

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

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

Using the 1.2.3.5-Hour OFF Timer ................................................................. 20

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

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

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

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

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

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

Product Information

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

Model No. ______________________ Serial No. ____________________

Date of purchase ________________________________________________

Dealer’s address ________________________________________________

Phone number ________________

DECLARATION OF CONFORMITY

This product is marked « » as it satisfies EEC Directive No. 89/336/ EEC, 73/ 23/EEC, 93/68/EEC and 92/31/EEC. This declaration will become void in case of mis-usage and/or from non observance though partial of Manufacturer’s installation and/or operating instructions.

Alert Symbols

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

OI-791-3-EG

CAUTION

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.

Page 63

Installation Location

• We recommend that this air conditioner be installed properly by

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

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

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

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

• Do not install the air conditioner where excessively high heatgenerating objects are placed.

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

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

Electrical Requirements

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

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

3. Wiring must be done by a qualified electrician.

CAUTION

Safety Instructions

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

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

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

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

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

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

• Do not let children play with the air conditioner.

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

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Page 64

Names of Parts

Air intakes

INDOOR UNIT

Air outlet

Remote control unit

Drain hose

Refrigerant tubes

OUTDOOR UNIT

Air outlet

NOTE

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

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

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

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

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.

which remove dust.

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

refrigerant gas flows.

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

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

and other electrical components.

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Page 65

RESET

TEST

OFF

LED CLEAN

ION

TIMER

OPR.

(FI

TER

IMPORTANT

(

Unit Display and Operation Button

FIFILTETER

INDOOR UNIT

RESET

FILTER RESET button

Avoid using radio equipment such as mobile phone near (within 1 m) the remote control receiver. Some radio

ONON /

OFF

TEST

OPERATION button

TEST mode button

equipment may cause malfunction of the unit.

REMOTE CONTROL receiver If the trouble happens, disconnect power and

LED CLEAN

(FI

LTER

ION

)

TIMER

OPR.

OPERATION lamp restart the air conditioner

after a few minutes.

LED CLEAN lamp

ION lamp

TIMER lamp

FILTER lam

REMOTE CONTROL receiver This section picks up infrared signals from the remote control unit

(transmitter).

OPERATION button When the remote control cannot be used, pressing this button with a small

pointed tool enables heating and cooling operation.

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

Cooling operation

(green)

Heating operation

(red)

Stop

(lamp off)

CAUTION

Do not set at the TEST mode for normal operation.

This mode is used only when servicing the air conditioner.

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

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

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

LED CLEAN lamp This lamp lights during operation in the UV anti-bacterial mode.

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

operating.

NOTE

• The front panel of the indoor unit operates automatically when starting and stopping operation. The panel opens slightly when operation starts, and closes when operation stops.

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

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Page 66

Remote Control Unit (Display)

Displayed when transmitting data

Displayed when

setting temperature

Displayed when the

time display is set to

12-hour time

(1) Operation mode

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

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

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

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

Displayed when indoor unit sensor is in use

Displayed when temperature is shown

Displayed when setting timer

Symbols

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

(6) Confirmation of transmission.....

(7) Auto. flap left/right

indication ...................................

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

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

(2) Fan speed

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

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

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

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

(3) Temperature setting

16–30°C When set to 28 °C

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

(4) Timer

24-hour clock with ON/OFF

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

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

(8) Auto. flap up/down

indication ...................................

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

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

(9) High power operation ................

(10) Indoor unit sensor ...................

(11) Child lock ................................

(12) ION operation..........................

(13) LED clean operation ...............

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

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

OI-791-7-EG

(14) Quiet operation .......................

Page 67

Transmitter Sensor

Remote Control Unit

ION

button

QUIET

button

(Cover closed)

Transmitter When you press the buttons on the remote control unit, the mark appears in

Display

LED CLEAN button ON/OFF operation button

HIGH POWER button

1.2.3.5HR. TIMER button

Temperature setting button

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

ON TIME

selector button

SENSOR button

setting

buttons

NIGHT

SETBACK

button

FAN SPEED

Advance

Return

CLOCK

button

Time

display

selector

button

(Cover opened)

MODE selector button FLAP button

CANCEL button

CHILD LOCK butto

Advance

Return

TIMER selector

button Temperature display selector button

OFF TIME setting buttons

Sensor

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

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

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

1.2.3.5HR. TIMER button

(1.2.3.5-HOUR OFF TIMER)

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

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

Temperature setting buttons

(TEMP.)

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

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

operation on and off.

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

the unit operates for 1, 2, 3 or 5 hours and then shuts down.

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

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

Press the button to increase the set temperature. Press the button to reduce the set temperature. For details, see Automatic operation and Manual operation.

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

speed setting to provide a quieter operating sound.

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Page 68

Remote Control Unit (continued)

ON TIME/OFF TIME setting

buttons

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

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

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

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

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

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

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”.

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

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

NIGHT SETBACK button For details, see “5. Night Setback Mode”. When you press this button in the

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

FLAP button

(up/down)

Press the button either to select the setting of the airflow direction to auto. flap in each mode or to one of the six possible positions from (2) to (7) 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 at six positions from (2) to (7). : The flap moves up and down automatically.

NOTE

When you press the button, the air flow direction will change one by one as follows.

SWEEP

FLAP button

(left/right)

Press the button either to select the setting of the airflow direction to auto. flap in each mode or to one of the six possible positions from (2) to (7), or to select the sweep function which moves the flap left and right automatically.

: Auto flap setting: The flap is set at position (4) in the following chart.

: The airflow direction can be set at six positions from (2) to (7).

: The flap moves left and right automatically.

OI-791-9-EG

NOTE

When you press the button, the airflow direction will change one by one as follows.

WIDE SWEEP

Page 69

Remote Control Unit (continued)

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

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

NOTE

Temperature Display Selector

button

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

TIMER Selector button

(ONE TIME/EVERYDAY)

CANCEL button If you want to cancel the setting time of ON or OFF, press the ON or OFF button

CLOCK button The CLOCK button is used to set the present time. Press the CLOCK button

CHILD LOCK button The CHILD LOCK button is used to tamperproof and protect the unit from

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

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

This button switches ONE TIME or EVERYDAY. When you select EVERYDAY, is displayed and continuously operates this function everyday. The initial setting is EVERYDAY. If you select ONE TIME, it operates until setting time of timer.

first, then press the CANCEL button. The CANCEL function is invalid for the

1.2.3.5HR. TIMER.

first, then select the advance or return keys on the ON or OFF TIME setting button. Press the CLOCK button again to set adjusted present time.

being incorrectly operated. The setting or canceling this function is effected by pressing the button for at least two seconds.The initial setting is set to CHILD LOCK off.

: CHILD LOCK on.

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

NOTE

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

How to Install Batteries

NOTE

All key access functions are invalid while the CHILD LOCK function is on.

control units when two air conditioners are installed next to each other. The ADDRESS switch is located inside of rear cover on the remote control unit, and is set to A. For more information, please contact the dealer where you made the purchase.

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

Using the Remote Control Unit

1.Slide the cover in the direction

indicated by the arrow and remove it.

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

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Page 70

Using the Remote Control Unit (continued)

NOTE

How to Use the Remote

Control Unit

Remote Control Unit

Installation Position

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

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

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

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

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

Air conditioner (Indoor unit)

Receiver

Remote control

unit

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:

(Transmitter head)

DO NOT • In direct sunlight

Mounting the Remote Control

Unit

• Behind a curtain or other places where it is covered

• More than 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)

Remote control unit mount

Mounting screws

4 x 16 (included)

When Holding the Remote

OI-791-11-EG

Control Unit

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

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

Page 71

Operation with the Remote Control Unit

1. Automatic Operation

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

STEP 2

STEP 1

NOTE

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

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

STEP 1 Press the MODE selector button to .

STEP 2 Press the ON/OFF operation button.

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

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

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Page 72

2. Manual Operation

STEP 3

Operation with the Remote Control Unit (continued)

(Cover closed) (Cover opened)

STEP 4

STEP 2

STEP 1

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 1 Press the MODE selector button and select the desired

mode.

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

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

button.

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

setting to the desired temperature. Adjustable temperature range:

30 °C max.

16 °C min.

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

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

desired. (Refer to “Adjusting the Airflow Direction”.)

or 86 °F max.

60 °F min.

OI-791-13-EG

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

Page 73

Operation with the Remote Control Unit (continued)

NOTE

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

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

3. Adjusting the Fan Speed

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

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

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

SPEED selector button as desired. [ , , or ]

4. Fan Only

STEP 2

STEP 1

STEP 3

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

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

STEP 2 Press the ON/OFF operation button.

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

speed of your choice ( , or ).

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Page 74

5. Night Setback Mode

Operation with the Remote Control Unit (continued)

Night Setback Mode is used for saving energy.

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

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

A. In Cooling and DRY

Mode: ( and )

B. In Heating Mode: ( )

When the night setback mode is selected, the air conditioner automatically raises the temperature setting 1 °C when 30 minutes have passed after the selection was made, and then another 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.

1°C (2°F)

Setting temperature

Press the NIGHT

1°C (2°F)

30 min.

Time

SETBACK button

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

OI-791-15-EG

Setting temperature

Press the NIGHT SETBACK button

30 min.

2°C (4°F)

30 min.

2°C (4°F)

Time

Page 75

6. QUIET Mode

7. HIGH POWER Mode

Operation with the Remote Control Unit (continued)

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

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

To cancel, press QUIET button again.

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

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

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

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

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.

8. ION Mode

9. LED CLEAN Mode

NOTE

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

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

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

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

To cancel, press ION button again.

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

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

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

In LED CLEAN mode, a UV anti-bacterial unit (including a LED CLEAN lamp and antibacterial 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. 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.

•

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.

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Page 76

Special Remarks

LED CLEAN

ION

TIMER

OPR.

(FILTER)

‘‘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 is automatically set to Low speed for providing a comfortable breeze.

• ‘‘DRY’’ operation is not possible if the indoor temperature is 15 °C or less.

Heating ( ) Operation

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

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

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

exchanger coil, reducing heating performance. When this happens, a microcomputer defrosting system operates. At the same time, the fan on the indoor unit stops and the OPERATION lamp lights red and orange

(FILTER)

LED CLEAN

ION

OPERATION lamp

TIMER

OPR.

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

Cooling ( ) Operation

Power failure during

operation

Clicking Sound

Clicking sound is heard from

the air conditioner

Remote Control Unit

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.

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

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

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

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

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Setting the Timer

NOTE

1. How to set the present time

2. How to set the OFF time

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

• Temperature: °C

(Example) To set to 22:30.

Operation Indication

1. Press the CLOCK button once if

the time indicator is not flashing.

2. Press the Advance, Return ( , ) button until 22:30 is

displayed.

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

(Example) To stop the air conditioner at 20:00.

1. Press the OFF TIME setting

button once.

The time indication alone flashes.

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

current time.

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

2. Press the Advance, Return ( , ) button until 20:00 is

displayed.

3. Wait a few seconds, and then

the setting is complete.

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

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

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Page 78

Setting the Timer (continued)

3. How to set the ON time

4. How to set DAILY ON/OFF REPEAT timer

(Example) To start operation at 6:10.

Operation Indication

1. Press the ON TIME setting

button once.

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

2. Press the Advance, Return ( , ) button until 6:10 is displayed.

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

3. Wait a few seconds, and then

the setting is complete.

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

(Example) To start operation at 6:10 and stop the air conditioner at 20:00.

22:30

Present time

6:10

20:00

OFF

1. Select EVERYDAY by the

TIMER selector button then set the ON/OFF timer times as shown in 2-1, 2, 3 and 3-1, 2, 3.

NOTE

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

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

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

To cancel a timer program • Press the CANCEL button.

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

NOTE

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

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

The present time 22:30 and

are displayed.

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Page 79

Using the 1.2.3.5-Hour OFF Timer

1. 1.2.3.5-Hour OFF Timer This function causes the unit to operate for 1, 2, 3 or 5 hours and then stop, regardless of whether the unit is on or off when the button is pressed.

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

Setting procedure:

Regardless of whether the unit is on or off, press the 1.2.3.5-Hour Timer button and select as desired, 1, 2, 3 or 5 hours.

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 1.2.3.5-hour function is now cancelled and the unit operates normally.

NOTE

2. Operation together with the

DAILY ON/OFF REPEAT Timer

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

• If, while the 1.2.3.5-Hour Timer function is operating, the 1.2.3.5-hour

Timer button is pressed once to cancel the function and then again, the unit continues to operate for the desired number of hours from that point in time and then stops.

• It is not possible to use the OFF Timer and 1.2.3.5-Hour OFF Timer

together. Whichever function is set last takes precedence. If the 1.2.3.5Hour TIMER button is pressed while the TIMER OFF function operates, the OFF Timer is cancelled and the unit will stop operating the desired number of hours later.

The 1.2.3.5-Hour OFF Timer setting is given priority over the DAILY ON/OFF REPEAT setting when EVERYDAY of the TIMER selector button is set, except for the ON TIMER function of the ONE TIME setting.

Tips for Energy Saving

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.

Do • 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 80

Adjusting the Airflow Direction

The horizontal and vertical airflow can be adjusted by moving the vertical vanes and the flap with the remote control unit. 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.

CAUTION

1.Horizontal

2.Vertical A. Sweep function

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.

A. Sweep function

The vertical vanes move left and right to deliver air over the sweep range.

B. Setting the airflow manually

Referring to 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.

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

B. Setting the airflow manually

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

C. Auto flap function

The flap is set to the recommended position.

SWEEP

COOL

DRY

FAN

SweepWideAuto

SWEEP

HEAT

OI-791-21-EG

NOTE

CAUTION

• The flap automatically closes when the unit is off.

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

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

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

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

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

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

Page 81

Operation without the Remote Control Unit

RESET

TEST

OFF

LED CLEAN

ION

TIMER

OPR.

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

FIFILTER RESET

FILTER RESET button

OPERATION button

ONON /

OFF

TEST

TEST Mode button

steps below.

When the air conditioner is not running

Each time the OPERATION button is pressed with a small pointed tool, the operation mode changes cyclically, by changing the color of the OPERATION lamp.

Cooling operation

(green)

Heating operation

(red)

Stop

(lamp off)

LED CLEAN

(FILTER)

ION

TIMER

OPERATION

OPR.

lamp

NOTE

The temperature is set to the room temperature minus 2°C during the cooling operation and to the room temperature plus 2°C during the heating operation, and the fan speed and flap are set to Auto.

CAUTION

For normal operation, do not set to TEST mode, which is used only for servicing the air conditioner.

Care and Cleaning

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

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

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

wipe them with a clean, soft cloth.

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

CAUTION

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

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

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

Removing the front panel • Push the front panel all the way

upward. Pull while supporting the nearest point of the arms toward you.

• Remove the sub grill attached to the rear of the front panel after setting the five levers to loosen.

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.

Front panel

Sub grille

Lever

Tighten Loosen Loosen Tighten

Lever

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Page 82

Care and Cleaning (continued)

Remounting the front panel • Reattach the subgrille onto the front

panel then tighten the five levers.

• Support the nearest point of the front panel keeping it horizontal then push arm axis to the grooves at the top of the indoor unit.

• Press the locations marked by the arrows and close the front panel.

CAUTION

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

Anti-Mold Filter The anti-mold filter behind the front panel should be checked and cleaned

when the red FILTER (ION) lamp lights as follows; The FILTER (ION) indicator lamp lights after 250 operation hours. The indication will beep 4 times before the FILTER (ION) lamp flashes for 6 seconds after another 125 (375 total operation) hours, indicating the antimold filter should again be checked and cleaned. If you want to turn the FILTER (ION) lamp off or on after cleaning the antimold filter, press the FILTER RESET button in the indoor unit with a small pointed tool.

Front panel

Groove

Front panel

How to remove the anti-mold

filter

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

How to replace the anti-mold

filter

1. Open the front panel

Air clean filter

until it is nearly horizontal, grasp the

Front panel

sections near the front panel arms on both sides, and then pull forward to remove the front panel.

2. Remove the anti-mold filter, attached to the rear of the front panel.

Anti-mold filter

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

1. Insert the top of the antimold filter, align the two indentions with the center hook at bottom, then mount the filter into place.

indention

Anti-mold filter

center hook

OI-791-23-EG

2. Press the locations marked by the arrows and close the front panel.

Front panel

Page 83

Care and Cleaning (continued)

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

smoke from tobacco.

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

How to install the air clean

filter

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

1. Remove the anti-mold filter.

Air clean filter

2. Install the air clean filter securely in place onto the filter grille.

3. Reinstall the anti-mold filter.

Filter grille

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 40 °C, wring thoroughly, and then wipe.

Cleaning the negative ion

generator

NOTE

Follow the steps below when the generator has become dirty.

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

Remove the dust on the negative ion generator.

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

• Use a cotton swab, etc., to clean around the generator inside the

Negative ion generator (metal electrodes inside plastic case)

plastic case, taking care not to touch the electrodes.

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

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

• Do not apply excessive force while performing maintenance.

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Page 84

Troubleshooting

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

Trouble Possible Cause Remedy

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

2. Leakage circuit breaker tripped.

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

2. Contact service center.

4. Batteries in remote control unit have run down.

OPERATION lamp blinks and air conditioner does not operate.

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

Poor cooling (or heating) performance.

Clicking sound is heard from the air conditioner.

Trouble in system. Contact service center.

1. Dirty or clogged air filter. 1. Clean air filter to improve airflow.

2. Heat source or many people in room.

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

4. Obstacle near air intake or air discharge port.

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

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

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

4. Replace batteries.

2. Eliminate heat source if possible.

cold) out.

4. Remove it to ensure good airflow.

5. Set the temperature lower (or higher).

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

This is normal, and the sound will soon disappear.

OPERATION lamp lights but outdoor unit will not run.

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

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

2. Consult your dealer.

Operating Range

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

Temperature Indoor air temperature Outdoor air temperature

COOLING Max. 32 °C DB / 23 °C WB 43 °C DB

Min. 19 °C DB / 14 °C WB –15 °C DB

HEATING Max. 27 °C DB 24 °C DB / 18 °C WB

Min. 16 °C DB – DB/ –15 °C WB

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Page 85

SANYO Electrric co., Ltd. Osaka, Japan Sept. / 2005 Printed in Japan (T)

Sanyo SAP-KRV94EHDX User Manual

TECHNICAL & SERVICE MANUAL

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

4-1. Refrigerant Flow Diagram

5-1. Temperature Charts

5-2. Air Throw Distance Charts

6. ELECTRICAL DATA

6-1. Electrical Characteristics

6-2. Electric Wiring Diagrams

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection

7-2. Recommended Wire Length and Diameter

7-3. Remote Control Unit Installation Position

7-4. How to Test Run the Air Conditioner

8. MAINTENANCE

8-2. Removing and Mounting the Drain Hose

8-3. Removing the Electrical Component Box

8-4. Removing the Panel Motor

8-7. Removing and Mounting the Fan Motor

8-8. Removing the Fan

8-9. Disconnecting and Connecting Positive Connector for Outdoor Unit

9-1. Operation Functions

9-2. Protective Functions

10. TROUBLESHOOTING

10-1. Precautions before Performing Inspection or Repair

10-2. Method of Self-Diagnostics

10-3. Checking the Indoor and Outdoor Units

10-5. Noise Malfunction and Electromagnetic Interference

10-6. Checking and Troubleshooting when the Front Panel fails to work

11. CHECKING ELECTRICAL COMPONENTS

12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

12-1. Characteristics of New Refrigerant R410A

12-2. Checklist before Servicing

12-3. Tools Specifically for R410A

12-4. Tubing Installation Procedures

12-5. In Case of Compressor Malfunction

12-7. Charging Additional Refrigerant

12-8. Retro-Fitting Existing Systems