Sanyo SAP–K97AHA, SAP–KM97AHA Technical & Service Manual

TECHNICAL & SERVICE MANUAL

SAP – KM97AHA ( ✕ 2 ) + SAP – CM1827AHA

FILE NO.

Destination: Australia

MULTI-SPLIT SYSTEM AIR CONDITIONER

Indoor Model No

SAP – KM97AHA– S

Product Code No.

1 852 079 45

Outdoor Model No.

SAP – CM1821AHA– S

Product Code No.

1 852 079 46

Indoor Unit Outdoor Unit

SAP–CM1821AHA

SAP–KM97AHA (

✕

2)

REFERENCE NO.

SM

700505

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.

WARNING

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

CAUTION

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

If Necessary, Get Help

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

In Case of Improper Installation

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

SPECIAL PRECAUTIONS

WARNING

When Wiring

ELECTRICAL SHOCK CAN CAUSE

SEVERE PERSONAL INJURY OR DEATH.

ONLY A QUALIFIED, EXPERIENCED

ELECTRICIAN SHOULD ATTEMPT TO

WIRE THIS SYSTEM.

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

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

• Ground the unit following local electrical codes.

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

When Transporting

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

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 leakfree connection.

• Check carefully for leaks before starting the test run.

When Servicing

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

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

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

Others

CAUTION

• Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.

• Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in contact with a stove, gas water heater, electric room heater or other heat source, it can produce dangerously toxic gas.

Table of Contents

Page

■ Unit Combination.................................................................................................................................... iii

1. OPERATING RANGE .............................................................................................................................. 1

2. SPECIFICATIONS

2-1. Unit Specifications .......................................................................................................................... 2

2-2. Major Component Specifications.................................................................................................... 3

2-3. Other Component Specifications.................................................................................................... 5

3. DIMENSIONAL DATA.............................................................................................................................. 6

4. COOLING CAPACITY ............................................................................................................................. 8

5. HEATING CAPACITY ............................................................................................................................. 10

6. AIR THROW DISTANCE CHART ........................................................................................................... 11

7. REFRIGERANT FLOW DIAGRAM ......................................................................................................... 12

8. ELECTRICAL DATA

8-1. Electrical Characteristics ................................................................................................................ 14

8-2. Electric Wiring Diagrams ................................................................................................................ 16

9. INSTALLATION INSTRUCTIONS

9-1. Installation Site Selection ............................................................................................................... 18

9-2. Remote Control Unit Installation Position ....................................................................................... 20

9-3. Recommended Wire Length and Diameter ................................................................................... 21

10. FUNCTION

10-1. Room Temperature Control ........................................................................................................... 22

10-2. Dry Operation ................................................................................................................................ 24

10-3. Freeze Prevention ......................................................................................................................... 25

10-4. Overload Prevention ...................................................................................................................... 25

10-5. Cold draft Prevention ..................................................................................................................... 26

10-6. Defrosting Operation ..................................................................................................................... 27

11. TROUBLESHOOTING

11-1. Check before and after troubleshooting ........................................................................................ 29

11-2. Air conditioner does not operate .................................................................................................... 30

11-3. Some part of air conditioner does not operate .............................................................................. 34

11-4. Air conditioner operates, but abnormalities are observed ............................................................. 36

11-5. If a sensor is defective ................................................................................................................... 38

12. ARRANGEMENT OF ELECTRICAL COMPONENT .............................................................................. 39

13. CHECKING ELECTRICAL COMPONENTS

13-1. Measurement of Insulation Resistance .......................................................................................... 41

13-2. Checking Continuity of Fuse on PCB Ass'y.................................................................................... 42

13-3. Checking Motor Capacitor ............................................................................................................. 42

14.MAINTENANCE

14-1. Changing Address of Remote Control Unit in Indoor Unit ............................................................. 43

APPENDIX ................................................................................................................................................. 44 ii

■

Unit Combination

Combine indoor and outdoor units only as listed below.

Outdoor Unit

SAP–CM1827AHA

Indoor Unit

KM97

KM97

Symbol of

Indoor Unit

A

B

Refer to

Fig.1

Outdoor Unit

Indoor Unit

A

B

Fig.1

iii

1. OPERATING RANGE

Cooling

Heating

Temperature

Maximum

Minimum

Maximum

Minimum

Indoor Air Intake Temp.

32°C D.B. / 23°C W.B.

19°C D.B. / 14°C W.B.

27°C D.B.

16°C D.B.

Outdoor Air Intake Temp.

43°C D.B.

19°C D.B.

24°C D.B. / 18°C W.B.

– 8°C D.B. / – 9°C W.B.

1

2. SPECIFICATIONS

2-1. Unit Specifications

Indoor Unit

Outdoor Unit

No. of indoor units.

Power Source

SAP – KM97AHA

SAP – CM1827AHA

Capacity

Air circulation (High)

Moisture removal (High)

Voltage rating

Available voltage range

Running amperes

Power input

Power factor

C.O.P.

kW

BTU/h m

3

/h

Liters/h

V

W

%

W/W

A Compressor locked rotor amperes

Controls / Temperature control

Control unit

Timer

Fan speeds

Airflow direction (Indoor)

Indoor / Outdoor

Horizontal

Vertical

Air filter

Compressor

Refrigerant / Amount charged at shipment

Refrigerant control g

V

A

Operation sound

Indoor – Hi / Me / Lo dB-A

Outdoor – Hi dB-A

Refrigerant tubing connections

Max. allowable tubing length at shipment

Refrigerant tube diameter

Narrow tube

Wide tube m mm (in.) mm (in.)

Refrigerant tube kit / Accessories

Unit dimensions package dimensions

Weight

Height

Width

Depth

Height

Width

Depth

Net

Shipping

Shipping volume mm mm kg kg m

3 mm mm mm mm

1-unit

240 V 1-phase 50 Hz

Cooling

2.65

9,000

Heating

3.30

11,300

2-unit

240 V 1-phase 50 Hz

Cooling

5.10

17,400

Heating

6.35

21,700

450 450 x 2

1.1

4.6

1,040

94

2.5

240

216 to 264

—

4.9

1,090

93

3.0

1.1 x 2

9.1

2,120

97

2.4

240

216 to 264

25 50

Microprocessor / I.C. thermostat

—

8.9

2,000

94

3.2

Indoor Unit

265

805

145

208

855

326

7.5

10.0

0.06

Wireless remote control unit

1-hour OFF / 12-hour ON or OFF

3 and Auto / 1

Manual

Auto

Washable, Anti–Mold

Rotary (Hermetic)

R22 / 1,200

Capillary tube

40 / 34 / 31

53

Flare type

7.5

6.35 (1/4)

9.52 (3/8)

Optional / Hanging wall bracket

Outdoor Unit

630

830

305

713

994

413

61.0

66.0

0.29

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C DB/19°C WB

Outdoor air temperature 35°C DB/24°C WB

Heating: Indoor air temperature 20°C DB

Outdoor air temperature 7°C DB/6°C WB

2

2-2. Major Component Specifications

Indoor Unit SAP – KM97AHA

Part No.

Controls

Control circuit fuse

Remote Control Unit

Type

Number ... Dia. and length

Fan motor model ... Q´ty

No. of poles ... rpm (240 V, High)

Nominal output

Coil resistance (Ambient temp. 20°C) mm

W

Ω

Safety devices

Type

Operating temp.

Open

Close

Run capacitor

Type

Model

Rating

Coil resistance (Ambient temp. 25°C)

Coil

Rows

Fin pitch

Face area

°C

µF

VAC

Ω mm m

2

POW–KM97GHS

Microprocessor

250 V – 3.15 A

RCS–2MHS4E–G

Cross–flow

1 ... ø70 / L598

KFV2Q–11B5P ... 1

2 ... 1,960

10

WHT – BRN : 385.3

WHT – VLT : 113.6

VLT – ORG : 37.4

ORG – YEL : 87.8

YEL – PNK : 95.8

Internal thermal fuse

145 ± 2

—

1.0

440

Stepping motor

MP24GA1

DC 12 V

WHT – BLU (respectively 4 wires) : 380 ± 7%

Aluminum plate fin / Copper tube

2

1.4

0.126

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

3

Outdoor Unit SAP – CM1827AHA

Controller PCB

Control circuit fuse

Type

Compressor model ... Q´ty

Nominal output

Compressor oil ... Amount

Coil resistance (Ambient temp. 25°C)

Safety devices

Type

Overload relay ... Number

Operating temp.

Open

Close

Operating amp.(Ambient temp. 25°C)

Run capacitor

°C

°C

µF

VAC ... Q´ty

Type

Number ... Dia.

Fan motor model ... Q´ty mm

No. of poles ... rpm (240 V,High)

Nominal output

Coil resistance (Ambient temp. 20°C)

W

Ω

Safety devices

Coil

Rows

Fin pitch

Face area

External Finish

Type

Operating temp.

Run capacitor

Open

Close

W cc

Ω

°C

µF

VAC mm m

2

POW–C186CMH

250 V– 3 A

Rotary (Hermetic)

C–R95H5K ... 2 / 80696745–S ... 2

950 x 2

SUNISO 4GSD–T ... 650 x 2

C – R : 2.88

C – S : 6.87

External (OLR 1, 3)

MRA99089–9201 ... 2

145 ± 5

69 ± 11

Trip in 6 to 16 sec. at 16.5 A

22.5 ... 2

400 ... 2

Propeller

External (OLR 2, 4)

CS–7C115 ... 2

115 ± 3

95 ± 5

—

1 ... ø400

SG6–51B5P ... 1

6 ... 920

50

WHT – BRN : 92.1

WHT – PNK: 196.4

Internal protector

130 ± 8

Automatic reclosing

2.0

480

Aluminum plate fin / Copper tube

2

1.6

0.453

Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

4

2-3. Other Component Specifications

Indoor Unit SAP – KM97AHA

Transformer (TR)

Rating

Coil resistance

Primary

Secondary

Capacity

Ω

(at 21°C)

Thermal cut-off temp.

Thermistor (Coil sensor TH1)

Resistance k

Ω

Thermistor (Room sensor TH2)

Resistance k

Ω

ATR-J125

AC 230V, 50Hz

19V, 0.631A

12VA

Primary (WHT – WHT): 205 ± 10%

Secondary (BRN – BRN): 1.5 ± 10%

150°C

PBC-41E-S4

–20°C 40.1 ± 5% 20°C 6.5 ± 5%

–10°C 24.4 ± 5%

0°C 15.3 ± 5%

10°C 9.9 ± 5%

30°C 4.4 ± 5%

40°C 3.0 ± 5%

50°C 2.1 ± 5%

DTN-TKS106E

25°C 5.0 ± 3%

Outdoor Unit SAP – CM1827AHA

Power Relay (PRA, PRB)

Coil rating

Coil resistance

Ω

(at 20°C)

Contact rating

Termistor (Coil sensor)

Resistance k

Ω

Solenoid Coil (4-way Valve SCA, SCB)

Coil rating

Coil resistance

Ω

(at 20°C)

DFU24D1-F (M)

DC 24V

650 ± 10%

AC 250V, 20A

PBC-41E-S15

–10°C 23.7 ± 5% 25°C 5.3 ± 5%

0°C 15.0 ± 5%

10°C 9.7 ± 5%

30°C 4.4 ± 5%

40°C 3.1 ± 5%

20°C 6.5 ± 5%

CHV-01Ai038A1 (Coil), CHV-0101 (Valve)

AC 230V, 50Hz, 5W

1,408 ± 7%

5

3. DIMENSIONAL DATA

Indoor Unit SAP – KM97AHA

805 145

Rear panel (center point of gravity)

Remote control unit

61 23

130

124

58

Center of tubing hole (3 places)

Drain hose ø18

Narrow tube ø6.35 (1/4")

Wide tube ø9.52 (3/8")

Unit : mm

6

Outdoor Unit SAP – CM1827AHA

538

Air intake

146

Air discharge

830

4 – ø12 holes

305

7

2 3

Magnified illustration

1

To Indoor Unit A

To Indoor Unit B

1 Narrow tube service valve

ø6.35(1/4")

2 Wide tube service valve

ø9.52(3/8")

3 Check Port

Unit : mm

4. COOLING CAPACITY

■

1 - indoor unit in operation A(or B)

Indoor Unit SAP – K97AHA ( ✕ 1) NOTE

Outdoor Unit SAP – CM1827AHA

240 V Single phase 50 Hz g

RATING CAPACITY

EVAPORATOR

ENT. TEMP. °C

W.B.

15

D.B.

21

23

25

27

29

31

TC

CM

SHC

SHC

SHC

SHC

SHC

SHC

TC

CM

17

21

23

25

27

29

31

SHC

SHC

SHC

SHC

SHC

SHC

TC

CM

SHC

SHC 19

21

21

23

25

27

29

31

23

25

27

29

31

SHC

SHC

SHC

SHC

TC

CM

SHC

SHC

SHC

SHC

SHC

TC

CM

0.76

1.32

1.55

1.77

1.99

2.22

3.43

0.77

23 25

27

29

31

SHC

SHC

SHC

SHC

1.29

1.51

1.74

1.96

TC : Total Cooling Capacity (kW)

2.70

3.05

0.73

1.34

1.57

1.79

2.01

2.24

2.46

3.23

2.48

2.67

2.67

2.86

0.71

1.59

1.81

2.03

2.26

2.48

2.43

2.55

2.55

2.74

0.77

1.53

1.75

1.97

2.20

2.42

2.64

2.92

0.79

1.28

1.51

1.73

1.96

2.18

2.40

3.09

0.82

1.26

1.49

1.71

1.93

2.16

3.28

0.84

1.23

1.45

1.68

1.90

2.37

2.44

2.44

2.62

0.83

1.47

1.69

1.91

2.14

2.36

0.87

1.21

1.43

1.65

1.88

2.10

3.12

0.90

2.58

2.49

2.78

# 2.65

0.85

1.23

1.45

0.91

1.17

1.39

1.67

1.90

2.12

2.34

2.95

1.62

1.84

2.06

2.29

2.81

1.17

1.40

1.62

1.84

2.31

2.32

2.32

2.49

0.89

1.41

1.63

1.86

2.08

2.30

0.94

1.15

1.37

1.60

1.82

2.04

2.95

0.96

1.11

1.33

1.56

1.78

A : SAP–K97AHA

B : SAP–K97AHA

2.65 kW

20

CONDENSER

OUTDOOR AMBIENT TEMP. °C

25 30 35 40

2.67

0.69

1.81

2.04

2.26

2.55

0.75

1.75

1.98

2.20

2.44

0.80

1.70

1.92

2.14

2.32

0.86

1.64

1.86

2.09

2.18

0.98

1.57

1.79

2.02

2.18

2.18

2.18

2.34

1.01

1.34

1.56

1.79

2.01

2.23

2.34

2.49

1.03

1.10

1.32

1.55

1.77

2.00

2.22

2.64

1.06

1.08

1.31

1.53

1.75

1.98

2.76

1.09

1.04

1.26

1.49

1.71

43

2.01

1.10

1.49

1.71

1.93

2.01

2.01

2.01

2.15

1.13

1.26

1.48

1.70

1.93

2.15

2.15

2.29

1.16

1.02

1.24

1.47

1.69

1.91

2.14

2.43

1.19

1.00

1.23

1.45

1.67

1.90

2.57

1.21

0.97

1.20

1.42

1.64

SHC : Sensible Heat Capacity (kW)

CM : Compressor Input (kW)

Rating conditions (#Mark) are

Outdoor Ambient Temp. 35°C D.B.

Indoor Unit Entering Air Temp. 27°C D.B. / 19°C W.B.

8

■

2 - indoor units in operation A + B

Indoor Unit SAP – K97AHA ( ✕ 2)

NOTE

Outdoor Unit SAP – CM1827AHA

240 V Single phase 50 Hz g

RATING CAPACITY

EVAPORATOR

ENT. TEMP. °C

W.B.

15

D.B.

21

23

25

27

29

31

TC

CM

SHC

SHC

SHC

SHC

SHC

SHC

TC

CM

17

21

23

25

27

29

31

SHC

SHC

SHC

SHC

SHC

SHC

TC

CM

SHC

SHC 19

21

21

23

25

27

29

31

23

25

27

29

31

SHC

SHC

SHC

SHC

TC

CM

SHC

SHC

SHC

SHC

SHC

TC

CM

1.62

2.54

2.99

3.44

3.88

4.33

6.60

1.65

23 25

27

29

31

SHC

SHC

SHC

SHC

2.48

2.92

3.37

3.82

TC : Total Cooling Capacity (kW)

5.30

5.87

1.58

2.59

3.03

3.48

3.93

4.37

4.82

6.22

4.87

5.14

5.14

5.51

1.53

3.07

3.51

3.96

4.41

4.85

A : SAP–K97AHA

B : SAP–K97AHA

5.10 kW

20

CONDENSER

OUTDOOR AMBIENT TEMP. °C

25 30 35 40

5.14

1.49

3.52

3.97

4.42

4.92

1.61

3.41

3.86

4.31

4.69

1.72

3.30

3.75

4.19

4.47

1.85

3.19

3.64

4.08

4.20

2.09

3.06

3.51

3.95

4.75

4.92

4.92

5.27

1.65

2.95

3.40

3.85

4.29

4.74

5.19

5.61

1.70

2.47

2.92

3.37

3.81

4.26

4.71

5.95

1.75

2.43

2.88

3.33

3.77

4.22

6.31

1.80

2.37

2.82

3.26

3.71

4.64

4.69

4.69

5.03

1.77

2.84

3.29

3.74

4.18

4.63

1.88

2.32

2.77

3.22

3.67

4.11

6.01

1.92

5.03

4.79

5.36

# 5.10

1.82

2.36

2.81

1.96

2.25

2.70

3.26

3.70

4.15

4.60

5.68

3.15

3.59

4.04

4.49

5.41

2.26

2.71

3.15

3.60

4.47

4.47

4.47

4.79

1.90

2.73

3.18

3.63

4.07

4.52

2.01

2.22

2.66

3.11

3.56

4.00

5.68

2.07

2.14

2.58

3.03

3.48

4.20

4.20

4.20

4.51

2.15

2.60

3.05

3.50

3.94

4.39

4.51

4.79

2.21

2.12

2.57

3.02

3.47

3.91

4.36

5.08

2.27

2.09

2.54

2.99

3.43

3.88

5.31

2.33

2.01

2.45

2.90

3.35

43

3.86

2.35

2.90

3.35

3.80

1.88

2.32

2.77

3.22

3.86

3.86

3.86

4.15

2.40

2.44

2.89

3.34

3.78

4.15

4.15

4.41

2.47

1.97

2.41

2.86

3.31

3.76

4.20

4.68

2.53

1.94

2.38

2.83

3.28

3.72

4.94

2.59

SHC : Sensible Heat Capacity (kW)

CM : Compressor Input (kW)

Rating conditions (#Mark) are

Outdoor Ambient Temp. 35°C D.B.

Indoor Unit Entering Air Temp. 27°C D.B. / 19°C W.B.

9

5. HEATING CAPACITY

Indoor Unit SAP – K97AHA

Outdoor Unit SAP – CM1827AHA

120

110

100

90

80

70

60

30

20

10

50

40

0

–8 –5 0 5 7 10 15

Outdoor temperature (

°

C DB)

NOTE

1) … Point of Rating condition

Black dot in the chart indicate the following rating condition.

Indoor : 20

°

C DB

Outdoor : 7

°

C DB / 6

°

C WB

2) Above characteristics indicate instantaneous operation, which does not take into consideration defrost operation.

3) Fan speed : High

10

6. AIR THROW DISTANCE CHART

Indoor Unit SAP – KM97AHA

Cooling

Room air temp.

Fan speed :

: 27

°

C

High

0

1

2

3

4

1 2 3 4 5

Horizontal distance (m)

6 7 8 9

Axis air velocity

Flap angle

0 °

30

°

Heating

Room air temp.

Fan speed :

: 20

°

C

High

0

1

2

3

4

1 2 3 4 5

Horizontal distance (m)

6 7 8 9

Axis air velocity

Flap angle

45

°

60

°

11

7. REFRIGERANT FLOW DIAGRAM

Indoor Unit SAP – K97AHA ( ✕ 2)

Outdoor Unit SAP – CM1827AHA

Indoor Unit A

Wide tube

O.D.

9.52mm

(3/8")

Narrow tube

O. D.

6.35mm

(1/4")

Check port

Muffler

Accumulator

Compressor A

4 – Way valve

Drier

Check valve

( )

Strainer

Indoor Unit B

Wide tube

O.D.

9.52mm

(3/8")

Narrow tube

O.D.

6.35mm

(1/4")

Check port

Muffler

Accumulator

Compressor B

4 – Way valve

Drier

Check valve

( )

Strainer

Capillary tube

Wide Tube Service valve

Narrow Tube Service valve

12

Indoor Unit A

Wide tube

O.D.

9.52mm

(3/8")

Narrow tube

O.D.

6.35mm

(1/4")

Indoor Unit B

Wide tube

O.D.

9.52mm

(3/8")

Narrow tube

O.D.

6.35mm

(1/4")

Accumulator

Compressor A

Muffler

4 – Way valve

Check port

Strainer

Capillary tube

Drier

Check valve

( )

Accumulator

Compressor B

4 – Way valve

Check port

Muffler

Drier

Check valve

( )

Strainer

Capillary tube

Wide Tube Service valve

Narrow Tube Service valve

Insulation of Refrigerant Tubing

IMPORTANT

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

Thickness:

Min. 8 mm

Wide tube

CAUTION

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.

13

Insulation

Thickness:

Min. 8 mm

Narrow tube

8. ELECTRICAL DATA

8-1. Electrical Characteristics

■

1 - indoor unit in operation A(or B)

Indoor Unit SAP – K97AHA ( ✕ 1)

Outdoor Unit SAP – CM1827AHA

COOLING

Indoor Unit

Fan Motor

Performance at

Rating Conditions Running Amps.

A

Power Input kW

Full Load Conditions Running Amps.

A

Power Input kW

0.15

0.035

0.15

0.035

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Outdoor Unit

Fan Motor Compressor

240V Single phase 50Hz

0.42

4.03

0.092

0.913

0.42

0.092

5.43

1.213

NOTE

A : SAP–K97AHA

B : SAP–K97AHA

Complete Unit

4.6

1.04

6.0

1.34

HEATING

Performance at

Rating Conditions Running Amps.

A

Power Input kW

Full Load Conditions Running Amps.

A

Power Input kW

Indoor Unit

Fan Motor

0.15

0.035

0.15

0.035

Outdoor Unit

Fan Motor Compressor

240V Single phase 50Hz

0.42

0.092

0.42

0.092

Rating Conditions : Indoor Air Temperature 20°C D.B.

Outdoor Air Temperature 7°C D.B. / 6°C W.B.

Full Load Conditions : Indoor Air Temperature 27°C D.B.

Outdoor Air Temperature 24°C D.B. / 18°C W.B.

4.33

0.963

5.73

1.293

Complete Unit

4.9

1.09

6.3

1.42

14

■

2 - indoor units in operation A + B

Indoor Unit

Outdoor Unit

SAP – K97AHA ( ✕

SAP – CM1827AHA

2)

COOLING

Indoor Unit

Fan Motor

Performance at

Rating Conditions Running Amps.

A

Power Input kW

Full Load Conditions Running Amps.

A

Power Input kW

0.30

0.070

0.30

0.070

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Outdoor Unit

Fan Motor Compressor

240V Single phase 50Hz

0.42

8.38

0.092

0.42

1.958

11.28

0.092

2.588

NOTE

A : SAP–K97AHA

B : SAP–K97AHA

Complete Unit

9.1

2.12

12.0

2.75

HEATING

Performance at

Rating Conditions Running Amps.

A

Power Input kW

Full Load Conditions Running Amps.

A

Power Input kW

Indoor Unit

Fan Motor

0.30

0.070

0.30

0.070

Outdoor Unit

Fan Motor Compressor

240V Single phase 50Hz

0.42

0.092

0.42

0.092

Rating Conditions : Indoor Air Temperature 20°C D.B.

Outdoor Air Temperature 7°C D.B. / 6°C W.B.

Full Load Conditions : Indoor Air Temperature 27°C D.B.

Outdoor Air Temperature 24°C D.B. / 18°C W.B.

8.18

1.838

10.88

2.438

Complete Unit

8.9

2.00

11.6

2.60

15

8-2. Electric Wiring Diagram

Indoor Unit SAP – KM97AHA

WARNING

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

16

Outdoor Unit SAP – CM1827AHA

WARNING

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

17

9. INSTALLATION INSTRUCTIONS

9-1. Installation Site Selection

Maximum Allowable Tubing Length (L) and Elevation

Difference (H).

The Multi-Split System outdoor unit should be installed as close to the indoor units as possible. Maximum allowable length of the refrigerant tubing and elevation difference between outdoor and indoor units are shown in Table 1.

INDOOR

UNIT

Less than elevation difference (H) between the 2 units

Tubing length (L)

Fig. 1

OUTDOOR

UNIT

Table 1

Combination

Outdoor unit Indoor unit

Max allowable tubing length at shipment.(m)

Limit of tubing length(L).

(m)

Limit of elevation Required amount difference(H).

of additional

(m) refrigerant*(g/m)

CM1827

KM97

KM97

7.5

15 7

* If total tubing length becomes 7.5 to 15 m (max.),charge additional refrigerant (R22) by 15 g / m.

No additional charge of compressor oil is necessary.

15

Indoor Unit

WARNING

To prevent abnormal heat generation and the possibility of fire, don’t place obstacles, enclosures and grills in front of or surrounding the air conditioner in a way that may block air flow.

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.

●

● Wall-mounted Type

5 cm min.

5 cm min.

5 cm min.

INDOOR UNIT

,

Fig.2a

CAUTION

Indoor Unit

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

Minimum height from floor level

1.5m

Wall

DO:

● select an appropriate position from which every corner of the room can be uniformly air-conditioned. (High on a wall is best)

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

● select a location where tubing and drain pipe have the shortest run to the outside.

● allow room for operation and maintenance as well as unrestricted air flow around the unit. (Fig. 2a)

Fig. 2b

Floor level

18

Outdoor Unit

AVOID:

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

● damp, humid or uneven locations.

DO:

● 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.

(Figs. 4a and 4b)

● provide a solid base (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. 5)

● use lug bolts or equal to bolt down unit, reducing vibration and noise.

Required space around the unit.

Outdoor unit

Hot air

Fig. 3

Fig 3

Exhaust fan

Heat source

Air intake Min. 10 cm

Valve side

Min. 25 cm

Min.

5 cm

Air discharge Min.

40 cm

Top View

Fig. 4a

Top View

Obstacle above

2 m

2 m

Ground

Side View

Air intake

Concrete or equal

Abo ut 4

0 cm

Abo ut 10

cm

Fig. 5

Fig. 5 - A

19

Anchor bolts

(4 pcs.)

Min. 10 cm

9-2. 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

6-1. When attaching to wall (Fig.6a)

1) Confirm the indoor unit beeps when the ON/OFF button is pressed at the wall location where the remote control unit is to be attached, then attach the holder to the wall.

2) When taking out the remote control unit, pull it from the holder.

When using the remote control unit

• Point the transmission portion of the remote control unit at the receiver area of the indoor unit when operating the remote control unit, and during operation of the air conditioner.

• Do not place objects which may block the transmitted signals between the receiver and the remote control unit.

When mounting the remote control unit to prevent theft (Fig.6b)

1) Attach the holder to the wall with one of the screws (using only the hole in the top of the holder).

2) Remove the cover of the remote control unit and take out the batteries. Next, place the remote control unit in the holder.

3) Fasten both the remote control unit and holder to the wall with the remaining screw (using the hole in the bottom of the holder).

4) Install the batteries in the remote control unit and close the cover.

Truss-head tapping screw

4

×

16mm (supplied)

Remote control unit holder

Truss-head tapping screw

4

×

16mm (supplied)

Holder

Fig.6a

Fig.6b

20

Holder

9-3. 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 size for power supply systems.

NOTE

Refer to the WIRING SYSTEM DIAGRAM for the meaning of

"A", "B" and "C" in Table 2.

Table 2

Model

Cross Sectional

Area (mm

2

)

CM1827

(A) Power Supply Wiring Length (m) (B) Power Line Length (m) (C) Cont rol Line

2

(#14)

18

3.5

(#12)

27

2

(#14)

20

0.75

(#18)

20

Fuse or Circuit

Capacity

20 A

# ······ AWG (American Wire Gauge)

WARNING

● 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.

WARNING

● To avoid the risk of electric shock, each air conditioner unit must be grounded.

CAUTION

● Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram. The indoor unit draws its power from the outdoor unit.

Indoor unit A

Terminal

3

4

5

1

2

6

7

3

4

5

1

2

6

7

Indoor unit B

Terminal

WIRING SYSTEM DIAGRAM

Outdoor unit

Terminal 8PA

B

C

B

Grounding line

240 V

240 V

Grounding line

240 V

240 V

C

Power supply

Single-phase,

50Hz, 240V

Grounding line

A

6

7

8

3

4

5

1

2

1

2

3

3

4

5

1

2

6

7

8

Terminal 8PB

21

10. FUNCTION

10-1. Room Temperature Control

■

Cooling

● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit.

●

The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.

Signal from remote control unit set temp.

T+1

°

C

T

°

C

3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes

Thermo.

OFF

Thermo.

ON

Thermo.

OFF

Thermo.

ON

Thermo.

ON

Thermo.

ON

More than

5 minutes 5 minutes 3 minutes

Compressor ON OFF ON OFF

Room temp.

ON

Thermo.

OFF

OFF

OFF ON OFF Outdoor fan

Indoor fan

ON ON

Set speed

OFF

● The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least

3 minutes. To protect the compressor from stalling out when trying to start against the high side refrigerant pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to equalize.

● As a protective measure, the control circuit switches the compressor OFF after 5 minutes or more of compressor operation.

●

Thermo. ON : When the room temperature is above T + 1°C (T°C is set temperature).

Compressor

➞

ON

● Thermo. OFF : When the room temperature is equal to or below set temperature T°C.

Compressor ➞ OFF

22

■

Heating

● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit.

●

The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.

Signal from remote control unit

More than

5 minutes 3 minutes

Thermo.

ON

3 minutes 3 minutes 3 minutes 3 minutes 3 minutes

Thermo.

OFF

Thermo.

ON

Set temp.

T

°

C

T–1

°

C

T–2

°

C

Thermo.

OFF

Compressor OFF

5 minutes

ON

5 minutes

OFF ON

Room temp.

OFF

Outdoor fan OFF ON

Indoor fan OFF

Standby lamp

Indoor heat exch. coil temp. 35

°

C

* 1 25

°

C

20

°

C

Solenoid coil

(4-way valve) OFF

LL

OFF

* 1

ON

Set speed

OFF

Operation button

OFF

OFF

30 seconds

LL

ON

OFF

* 1

LL

ON

Set speed

OFF

30 seconds

LL

OFF ON

ON (Reversing cycle)

ON

● The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least 5 minutes. To protect the compressor from stalling out when trying to start against the high side refrigerant pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to equalize.

●

As a protective measure, the control circuit switches the compressor OFF after 5 minutes or more of compressor operation.

● Thermo. ON : When the room temperature is below T – 1°C (T°C is set temperature).

Compressor ➞ ON

● Thermo. OFF : When the room temperature is equal to or above set temperature T°C.

Compressor ➞ OFF

NOTE

*1: Refer to "10-5 Cold Draft Prevention".

23

10-2. Dry Operation (Dehumidification)

● Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room temperature.

Room temp.

T+2

°

C

Set temp. T

°

C

T–1

°

C

Room temp. 15

°

C

Cooling operation

*Dry A1 zone

Compressor : Continuous operation

FMI (indoor fan) : L (low speed) / LL (very low speed) intermittent ventilation only while the compressor is ON.

*Dry B zone

Compressor : Intermittent operation (ON for 3 minutes and OFF for 9 minutes)

FMI (indoor fan) : L (low speed) / LL (very low speed) intermittent ventilation only while the compressor is ON.

Monitor zone

Both the indoor and outdoor units stop.

NOTE

● Intermittent ventilation occurs by switching the indoor fan speed between L ↔ LL.

● Dry operation does not occur when the room temperature is under 15°C, which is the monitor zone.

● When the compressor stops, the indoor fan stops as well.

24

10-3. Freeze Prevention (Cooling)

● This function prevents freezing of the indoor heat exchange coil.

● When the compressor has been running for 10 minutes or more and the temperature of the indoor heat exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. The compressor does not start again until the temperature rises above 8°C or 6 minutes has elapsed.

Room temp.

Thermo. OFF

Thermo. ON

T+1

°

C

Set temp. T

°

C

Indoor heat exch. coil temp.

–1

°

C

Compressor

More than

10 minutes

ON

6 minutes

OFF ON

More than

10 minutes

ON

More than

6 minutes

OFF ON

Indoor fan Set speed Set speed

10-4. Overload Prevention (Heating)

● This function prevents overheating of the indoor heat exchange coil.

●

When the temperature of the indoor heat exchange coil rises above 54°C, and if the indoor fan is L (low speed), then the fan speed changes from L (low speed) to M (medium speed).

● When the temperature of the indoor heat exchange coil rises above 57°C, the outdoor fan stops.

57

54

Indoor heat exch. coil temp.

°

C

47

44

Outdoor fan

Indoor fan

Compressor

ON

H or M or L

OFF

H ➞ H, M ➞ M, L ➞ M

ON

ON

25

10-5. Cold Draft Prevention (Heating)

●

This function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coil have sufficiently warmed up.

● STANDBY lamp on front of the indoor unit lights up when the indoor fan speed is either LL or OFF.

Indoor heat exch. coil temp.

°

C

35

°

C

25

°

C

20

°

C

Compressor

Indoor fan

Standby lamp

Initial start

OFF

ON

LL

ON

Set speed

OFF

LL = Very low speed

LL

ON

OFF

26

10-6. Defrosting Operation (Heating)

■ Defrosting Flowchart

* Split System A (or B) * Split System B (or A)

Heating operation Heating operation

20 minutes masking

* Split System A: Indoor unit A

Compressor A

Solenoid coil A

* Split System B: Indoor unit B

Compressor B

Solenoid coil B

Temperature in outdoor heat exchanger coil drops 1 deg/6 min.

or more and repeats

3 times continuously.

6 minutes masking

Temperature in outdoor heat exchanger coil falls to –14

°

C or lower.

Preparation for defrosting

Defrosting starts.

Defrosting starts.

Defrosting

Cold draft prevention

Defrosting

Cold draft prevention

(= Cooling cycle)

Temperature in outdoor heat exchanger coil is

26

°

C or higher.

Defrosting time is over

13.5 minutes.

Defrosting stops.

Defrosting stops.

27

■ Defrosting Mode Timing Chart

Start of defrosting

Compressor A

Compressor B

4-way valve

A and B

ON

5 sec.

OFF

ON

ON

65 sec.

OFF

1 min.

Outdoor fan

Indoor fan A

Standby lamp A

ON

Set speed

30 sec.

OFF

Defrosting 13.5 min. or outdoor coil temp. 26

°

C

ON

ON

OFF

OFF

OFF

Light ON

Indoor fan B

Standby lamp B

Indoor heat exch. coil temp. 35

°

C

Set speed

OFF

OFF

Light ON

Release of defrosting

65 sec.

OFF

5 sec.

OFF

ON

5 sec.

ON

ON

ON

* 1

Set speed

OFF

* 1

Set speed

OFF

Unit A

Unit B

Release of

cold draft prevention

NOTE

*1. No LL fan operation during this period.

28

11.TROUBLESHOOTING

11-1. Check before and after troubleshooting

WARNING

Hazardous voltage can cause ELECTRIC

SHOCK or DEATH. Disconnect power or turn off circuit breaker before you start checking or servicing.

11-1-1.Check power supply wiring.

●

Check that power supply wires are correctly connected to terminals No.1 and No.2 on the 3p terminal plate in the outdoor unit.

11-1-2.Check inter-unit wiring.

● Check that inter-unit wiring is correctly connected to the indoor unit from the outdoor unit.

11-1-3.Check power supply.

● Check that voltage is in specified range

(±10% of the rating).

● Check that power is being supplied.

Outdoor unit

1

2

Terminal plate A

1

2

3

4

7

8

5

6

Terminal plate B

1

2

3

6

7

4

5

8

Power supply

Single-phase,

50Hz, 240V

Ground

Inter-unit power wiring

Inter-unit control wiring

Inter-unit power wiring

Indoor unit A

1

2

3

4

5

6

7

Inter-unit control wiring

Indoor unit B

1

2

3

6

7

4

5

11-1-4.Check lead wires and connectors in indoor and outdoor units.

●

Check that coating of lead wires is not damaged.

● Check that lead wires and connectors are firmly connected.

●

Check that wiring is correct.

29

11-2. Air conditioner does not operate.

11-2-1.Circuit breaker trips (or fuse blows).

A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)

● There is a possibility of ground fault.

●

Check insulation resistance.

If resistance value is 2M

Ω or less, insulation is defective (“NO”).

WARNING

* Set circuit breaker to OFF.

1 Remove both power supply wires and inter-unit wires from terminal plate in outdoor unit.

• Measure insulation resistance of outdoor unit.

NO

2 Remove inter-unit wires from terminal plate in indoor unit.

• Measure insulation resistance of indoor unit.

NO

Insulation of outdoor unit is defective.

• Measure insulation resistance of electrical parts in outdoor unit.

Insulation of indoor unit is defective.

• Measure insulation resistance of electrical parts in indoor unit.

B. Circuit breaker trips in several minutes after turning the air conditioner on.

●

There is a possibility of short circuit.

• Check capacity of circuit breaker.

Capacity of circuit breaker is suitable.

NO Replace with suitable one (larger capacity).

• Measure resistance of compressor motor winding. (CMA and CMB)

30

11-2-2.Neither indoor nor outdoor unit runs.

A. Power is not supplied.

• Check power supply.

Power is being supplied to the outdoor unit.

NO

Circuit breaker is tripped.

Power failure

Reset breaker.

Wait for recovery or contact power company.

B. Check "OPERATION selector" switch in the indoor unit.

YES

• OPERATION selector switch is set in ON position.

NO

Set OPERATION selector switch to ON.

Switch Ass'y or indoor PCB Ass'y is defective.

C. Check remote control unit.

• Try to run with another remote control unit.

OK

First remote control unit is defective.

• Check for residue buildup on transmitter of remote control unit.

• Check for residue buildup on remote control receiver on front of indoor unit.

Clean transmitter.

Clean receiver.

31

D. Check fuse on the indoor PCB Ass'y.

• Check fuse on indoor PCB Ass'y for continuity. (F)

OK

If fuse has been blown,

• Check operation lamp to see if light is ON.

Light is OFF

• Measure resistance of primary and secondary winding of transformer.

(TR)

OK

Indoor PCB Ass'y or switch Ass'y is defective.

E. Check TIMER SELECT button on the remote control unit.

• Timer is turned ON. Check to see control.

YES

• Measure resistance of indoor fan motor winding.

(FMI)

OK

• Measure resistance of flap motor winding. (FLP)

OK

Replace the fuse.

Cancel the timer mode.

32

11-2-3.Only outdoor unit does not run.

A. Check setting temperature.

COOL

Is room temperature too low ?

NO

Try to lower setting temperature by temperature setting button cooler.

Outdoor unit still does not run.

• Try to run using another remote control unit.

OK

Remote control unit is defective.

B. Check PCB Ass'y in either indoor or outdoor unit.

• Check voltage between terminals

No. 3(+) and No. 4 at terminal plate.

(DC 24V)

No voltage appears.

OK

• Indoor PCB Ass'y is defective.

11-2-4.Only indoor unit does not run.

• Indoor PCB Ass'y is defective.

HEAT

Is room temperature too high ?

NO

Try to raise setting temperature by temperature setting button warmer.

Outdoor unit still does not run.

• Try to run using another remote control unit.

OK

Remote control unit is defective.

• Outdoor PCB Ass'y is defective.

33

11-3. Some part of air conditioner does not operate.

11-3-1.Only indoor fan does not run.

• Check fan casing foreign matter on inside.

• Check fan rotation.

Turn fan gently once or twice by hand.

Fan cannot be turned.

Fan motor burnout or foreign matter in bearings.

• Measure resistance of indoor fan motor winding.

OK

• Check fan motor capacitor.

11-3-2.Only flap motor does not run.

• Measure resistance of flap motor winding.

11-3-3.Only outdoor fan does not run.

Fan cannot be turned.

• Check fan rotation.

Turn fan gently once or twice by hand.

• Check fan casing for foreign matter on inside.

Fan motor burnout or foreign matter in bearings.

• Measure resistance of outdoor fan motor winding.

OK

• Check fan motor capacitor. (CF)

Remove foreign matter or repair.

Repair or replace.

Remove foreign matter or repair.

Repair or replace.

34

11-3-4.Only compressor does not run.

• Check compressor motor capacitor.

(CA,CB)

Overload relay is working.

(OLR 1 to 4)

YES

• Measure resistance of compressor motor winding.

Measure coil resistance of power relay. (PRA,PRB)

Temperature of compressor is abnormally high.

YES

Refrigerant gas shortage.

NO

YES

Charge refrigerant gas (R22).

Rotor may be locked up.

35

11-4. Air conditioner operates, but abnormalities are observed.

11-4-1.Operation does not switch from HEAT to COOL (or COOL to HEAT).

• Remote control unit may be defective.

Receiver in switch Ass'y may be defective.

• Measure resistance of 4–way valve's winding.

COOL ➞ HEAT

• Check voltage between terminals

No. 3(+) and No. 5 at terminal plate.

(DC 24V)

No voltage appears.

OK

• Indoor PCB Ass'y is defective.

Outdoor PCB Ass'y is defective.

HEAT ➞ COOL

• Check voltage between terminals

No. 3(+) and No. 5 at terminal plate.

(0V)

CAUTION

Units A and B cannot be operated in different modes simultaneously (for example, unit A operating in the heating mode while unit B is operating in the cooling or drying mode). When operating two units at the same time, set them both to the same mode. Note however that though technically different modes, unit A can operate in the cooling mode while B is operating in the drying mode.

• If the units are operated in different modes (for example, unit A in the heating mode and unit B in the cooling or drying mode), the results are as follows.

(Example) Unit A in heating mode

Unit B in cooling or drying mode

Unit A in heating mode

(Heating operation takes precedence.)

Unit B fan operating

If unit A is stopped, unit B will switch to cooling or drying operation.

36

11-4-2.Poor cooling or heating.

•

• Check position of remote control unit.

Cool or warm air from air conditioner reaches position directly.

YES

Change position of remote control unit.

• Wide and narrow tubes between indoor unit and outdoor unit are insulated.

YES

NO

Temperature difference is small.

• Measure temperature of suction and discharge air of air conditioner.

Possibility of gas shortage.

Temperature difference between suction and discharge air is large enough (approx. 10 deg. or more).

Insulate both wide and narrow tubes separately and then tape together.

Charge refrigerant gas (R22).

Check for clogging of air filter.

Clean filter.

Air filter is clogged.

YES

• Fan speed is set to LOW.

Set fan speed to either

HIGH or MEDIUM.

Reduce cooling or heating load or replace the air conditioner with larger capacity.

• Review cooling load estimate, if performance of air conditioner is normal.

11-4-3.Excessive cooling or heating.

NO

• Set temperature is suitable.

Set temperature to higher or lower value using temperature setting buttons of the remote control unit.

• Remote control unit is placed where it can detect room temperature properly.

NO

Change position of remote control unit.

37

11-5. If a sensor is defective.

11-5-1.Indoor coil temp. thermistor (TH1) is defective.

• Operation lamp on front side of indoor unit is flashing on and off. (*)

YES • Thermistor (TH1 ) is defective.

(That is, sensor is SHORT.)

No

• Replace thermistor.

• Function of freeze prevention continues to work in cooling mode.

Refer to 5-4 "Freeze Prevention"

YES • Thermistor (TH1 ) is not connected to indoor PCB Ass'y, or its temperature sensor is defective.

(That is, sensor is OPEN.)

• Replace thermistor.

No

NOTE Alarm Signal (*)

Operation lamp on the front side of the indoor unit will flash on and off when the indoor coil thermistor is defective.

(That is, sensor is SHORT). At the same time the outdoor unit will stop. Indoor unit will operate only for ventilation.

11-5-2.Room temp. thermistor (TH2) is defective.

A. Open

When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature.

a) In Cooling mode: The air conditioner soon stops and will not start again. (Thermo.OFF)

Neither outdoor fan nor compressor runs.

b) In Heating mode: The air conditioner continues to operate. (Thermo.ON)

Both the outdoor fan and compressor do not stop.

As a result, the room becomes too warm.

B. Short

Temperature sensor

When thermistor is short, the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature.

a) In Cooling mode: The air conditioner continues to operate. (Thermo.ON)

Both the outdoor fan and compressor do not stop.

Lead wires

Thermistor Structure

As a result, the room becomes too cold.

b) In Heating mode: The air conditioner soon stops and will not start again. (Thermo.OFF)

Neither outdoor fan nor compressor runs.

NOTE Definition of Open or Short Circuit of Sensor (Thermistor)

Open... A lead wire is broken or disconnected or the circuit inside the temperature sensor is open .

Short... The protective cover of a lead wire has been damaged, and the exposed wire is touching another metal part, or both lead wires have become exposed and are touching each other. Alternatively, the circuit inside the temperature sensor is closed.

38

12. ARRANGEMENT OF ELECTRICAL COMPONENT

Indoor Unit SAP – KM97AHA

Electric Parts

Room temp. thermistor (TH2) Fan motor capacitor (C)

Coil temp. thermistor (TH1)

Transformer (TR)

Terminal plate

PCB Ass'y

Switch Ass'y

Flap motor (FLP)

39

PCB Ass'y (Controller)

PCB Ass'y

Parts Layout in Unit

Heat exchenger coil

Thermistor

Compressor A (CMA)

Compressor B (CMB)

Fan motor

Solenoid coil B (SCB) Solenoid coil A (SCA)

Electric Parts

Compressor motor capacitor (CA)

Compressor motor capacitor (CB)

Varistor (SA1)

Fan motor capacitor (CF)

Power relay B (PRB)

Varistor (SA2)

Overload relay (OLR1) Overload relay (OLR3)

Power relay A (PRA)

Terminal Plate

(To Indoor Unit A)

Terminal Plate

(To Indoor Unit B)

Terminal Plate

(To Power supply)

40

13. CHECKING ELECTRICAL COMPONENTS

13-1. Measurement of Insulation

Resistance

● The insulation is in good condition if the resistance exceeds 2M

Ω

.

Clip

Ground wire

13-1-1. Power Supply Wires

Clamp the ground wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig. 1)

Then measure the resistance between the ground wire and the other power wire. (Fig. 1)

Probe

Insulation tester

Terminal plate

Fig. 1

Probe

13-1-2. Indoor Unit

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

Note that the ground line terminal should be skipped for the check. (Fig. 2) Copper tube or metallic part

Clip

13-1-3. Outdoor Unit

Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate. (Fig. 2)

13-1-4. 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.

NOTE

If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin.

Clip

Copper tube or metallic part

Metallic part

Clip

Probe

Insulation tester

Probe

Insulation tester

From fan motor, compressor and other parts

Fig. 2

Fig. 3

Insulation tester

Fig. 4

41

13-2. 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.

●

Check for continuity using a multimeter as shown in

Fig. 6.

13-3. Checking Motor Capacitor

Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. 7. Observe the deflection of the pointer, setting the resistance measuring range of the multimeter to the maximum value.

The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its original position.

The range of deflection and deflection time differ according to the capacity of the capacitor.

Fuse

PCB Ass’y

Fig. 5

Fuse

Fig. 6

Multimeter

Compressor motor capacitor

Fan motor capacitor

Fig. 7

42

11. MAINTENANCE

11-1. Changing Address of Remote Control Unit in Indoor Unit

If you are installing more than 1 indoor unit (up to 2) in the same room, it is necessary for you to assign each unit its own address, so each can be operated by its own separate remote control unit. You assign the addresses by matching the switch positions of each indoor unit with the switch positions of its remote control unit.

Following table shows the position you can use up to 2 indoor units installed in the same room.

Unit No.

1

2

Indoor Unit Address

(Control PCB)

OFF

ON

Remote Control

Address

A

B

To Change Address on PCB Ass’y

(1) Locate the address switch “S10” on the control PCB Ass´y of indoor unit.

(2) Change the switch to “ON” position.

NOTE

Address switche “S10” on the control PCB Ass´y is in the “OFF” position at time of shipment.

To Change Address on Remote Control Unit

(1) Remove the batteries before changing the address.

(2) Remove tab marked A to change the address of the remote control unit.

NOTE

(3) When it is removed, the address is automatically set to B.

(4) After inserting the batteries, press ACL button.

Address switch on the remote control unit is in “A” position at time of shipment.

ACL button

43

APPENDIX

Remote Control Unit

Sensor Transmitter

Display

(Cover closed)

ON/OFF operation button

1 HR. TIMER button

Temperature setting buttons

(TEMP.)

MODE selector button

FLAP button

TIMER ON button

ADDRESS switch

NIGHT SETBACK button

FAN SPEED selector button

TIMER SET button

(which advances the time displayed)

TIMER OFF button

ACL button

A/C SENSOR button

Battery compartment

(Pull off the cover to expose the batteries.)

NOTE The illustration above pictures the remote control unit after the coverhas been lowered and removed.

Unit Display and Operation Selector

INDOOR UNIT

TIMER lamp

STANDBY lamp

OPERATION lamp

OPERATION

STANDBY

TIMER

ON

OFF

TEST

REMOTE CONTROL receiver Operation selector

44

SANYO Electric Co.,Ltd.

Osaka, Japan

SM

700505

04/2002