TECHNICAL & SERVICE MANUAL

ADR522CW AE522SC

AE522SC3 / AER522SCL3

ADR522HW AE522HS

AE522HS3 / AER522HS3

SPLIT SYSTEM AIR CONDITIONER

®

INDOOR UNIT

OUTDOOR UNIT

0.8180.225.0

OCTOBER 01

TABLE OF CONTENTS

A

OPERATIONS.................................................................................................................PAGE.....1

B

SPECIFICATIONS..........................................................................................................................9

C

MAJOR COMPONENT SPECIFICATIONS................................................................ .................15

D

OTHERS COMPONENTE SPECIFICATIONS..............................................................................15

E

DIMENSIONALE DATA.................................................................................................................21

F

FUNCTION.....................................................................................................................................23

G

REFRIGERANT FLOW DIAGRAM................................................................................................29

H

ELECTRIC WIRING DIAGRAM.....................................................................................................31

I

TROUBLESHOOTING HEATING MODEL....................................................................................34

L

SAME PARTS OF AIR CONDITIONER DO NOT OPERATE........................................................41

M

AIR CONDITIONER OPERATES,BUT ABNORMALITIES OCCUR.............................................44

N

TROUBLESHOOTING COOLING MODEL....................................................................................45

O

SAME PARTS OF AIR CONDITIONER DO NOT OPERATE.......................................................52

P

AIR CONDITIONER OPERATES,BUT ABNORMALITIES OCCUR............................................53

Q

CHECKING ELECTRICAL COMPONENTS.................................................................................56

H

A

OPERATING RANGE

Function Temperature Indoor air intake temp. Outdoor air intake temp.

Maximum 35°C DB / 22°C WB 46°C DB

Cooling

Minimum 19°C DB / 14°C WB ,5 19°C DB

Heating

Maximum 27°C DB / 19°C WB 24°C DB / 18°C WB

Minimum – DB / – WB ,5 –8°C DB / –9°C WB

Referred to the systems - ADR522CW - AER522SCL3 only (3 phase and low ambient version)

INDOOR UNIT OUTDOOR UNIT

Function Temperature

Cooling

Indoor air Outdoor air intake temp. intake temp.

Maximum 35°C BS / 22°C BU 50°C BS

Minimum 19°C BS / 14°C BU ,5 -15°C BS

1

B

SPECIFICATIONS

1) UNIT SPECIFICATIONS

UNIT MODEL

INDOOR UNIT

OUTDOOR UNIT

ADR522CW

AE522SC

Power source 220 / 230 / 240V - 1 - 50 Hz

PERFORMANCES COOLING

Capacity

BTU/h 21.500

W (Kcal/h) 6.300 (5.418)

Air circulation (high - med - low) m 3 /h 1200

External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable

Moisture removal l/h 2.8

Voltage rating V 230

Available voltage range V 198 ÷ 264

Running ampere A 12.5

Power input W 2.600

Power factor % 90

Compressor locked rotor amperes A 70

C.O.P. W/W 2,42

FEATURES

Controls Microprocessor

Control unit Remote control

Temperature control I.C. thermostat

Timer ON/OFF 12 hours

Fan speed indoor / outdoor 3 and auto / 2 auto

Air filter Washable, easy access

Compressor Rotary (hermetic)

Refrigerant / ref. control / amount charged at ship g R22 / capillary tube / 2,5 g

Operation sound

Indoor Hi / Me / Lo (1 m) dB-A

Outdoor Hi / Lo (3 m) dB-A

38 / 33 / 29

55 / 52

Max. tubing length m (with factory R22 charge) 10

Max. allowable tubing length m (with R22 addition) 20

Required amount of additional refrigerant g/m 25

Limit of elevation difference m between the two units 7

Refrigerant tube diameter

Narrow tube mm (in.)

Wide tube mm (in.)

6,35 (1/4”)

15.88 (5/8”)

Accessory Booster cable

DIMENSIONS AND WEIGTH INDOOR UNIT OUTDOOR UNIT

Higth mm 316 835

Width mm 1050 850

Depth mm 665 305

Net weigth kg 51 70

Shipping volume m 3 0.44 0.37

Shipping weight (approx.) kg 53 79

Data subject to change without notice.

NOTA. Rating conditions:

Cooling: Outside air temp.: 35°C DB, indoor unit entering air temp.: 27°C DB / 19°C WB

Heating: Outside air temp.: 7°C DB / 6°C WB, indoor unit entering air temp.: 20°C DB

2

1) UNIT SPECIFICATIONS

UNIT MODEL

INDOOR UNIT

OUTDOOR UNIT

ADR522CW

AE522SC3

Power source 400V - 3N - 50 Hz (4 wires)

PERFORMANCES COOLING

Capacity

BTU/h 20.400

W (Kcal/h) 6.000 (5.160)

Air circulation (high - med - low) m 3 /h 1200

External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable

Moisture removal l/h 2.8

Voltage rating V 400

Available voltage range V 342 ÷ 440

Running ampere A 4.6

Power input W 2.500

Power factor % 80

Compressor locked rotor amperes A 28

C.O.P. W/W 2.4

FEATURES

Controls Microprocessor

Control unit Remote control

Temperature control I.C. thermostat

Timer ON/OFF 12 hours

Fan speed indoor / outdoor 3 and auto / 2 auto

Air filter Washable, easy access

Compressor Rotary (hermetic)

Refrigerant / ref. control / amount charged at ship g R407c / capillary tube / 2.38 g

Operation sound

Indoor Hi / Me / Lo (1 m) dB-A

Outdoor Hi / Lo (3 m) dB-A

38 / 33 / 29

51 / 44

Max. tubing length m (with factory R22 charge) 10

Max. allowable tubing length m (with .

R22 .

addition) )...................

20

Required amount of additional refrigerant g/m 25

Limit of elevation difference m between the two units 7

Refrigerant tube diameter

Narrow tube mm (in.)

Wide tube mm (in.)

6,35 (1/4”)

15.88 (5/8”)

Accessory Booster cable

DIMENSIONS AND WEIGTH INDOOR UNIT OUTDOOR UNIT

Higth mm 316 835

Width mm 1050 850

Depth mm 665 305

Net weigth kg 51 70

Shipping volume m 3 0.44 0.37

Shipping weight (approx.) kg 53 79

Data subject to change without notice.

NOTA. Rating conditions:

Cooling: Outside air temp.: 35°C DB, indoor unit entering air temp.: 27°C DB / 19°C WB

Heating: Outside air temp.: 7°C DB / 6°C WB, indoor unit entering air temp.: 20°C DB

3

1) UNIT SPECIFICATIONS

UNIT MODEL

INDOOR UNIT

OUTDOOR UNIT

ADR522CW

AER522SCL3

Power source 400V - 3N - 50 Hz (4 wires)

PERFORMANCES COOLING

Capacity

BTU/h 21.000

W (Kcal/h) 6.150 (5,335)

Air circulation (high - med - low) m 3 /h 1200

External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable

Moisture removal l/h 2,8

Voltage rating V 400

Available voltage range V 342 ÷ 440

Running ampere A 4.8

Power input W 2.800

Power factor % 85

Compressor locked rotor amperes A 28

C.O.P. W/W 2,2

FEATURES

Controls Microprocessor

Control unit Remote control

Temperature control I.C. thermostat

Timer ON/OFF 12 hours

Fan speed indoor / outdoor 3 and auto / 2 auto

Air filter Washable, easy access

Compressor Rotary (hermetic)

Refrigerant / ref. control / amount charged at ship g R407c / capillary tube / 2.410 g

Operation sound

Indoor Hi / Me / Lo (1 m) dB-A

Outdoor Hi / Lo (3 m) dB-A

38 / 33 / 29

55 / 52

Max. tubing length m (with factory R407c charge) 10

Max. allowable tubing length m ...

(with .

R407c .

addition) ....................

30

Required amount of additional refrigerant g/m 25

Limit of elevation difference m between the two units 7

Refrigerant tube diameter

Narrow tube mm (in.)

Wide tube mm (in.)

6,35 (1/4”)

15,88 (5/8”)

Accessory Booster cable

DIMENSIONS AND WEIGTH INDOOR UNIT OUTDOOR UNIT

Higth mm 316 835

Width mm 1.050 850

Depth mm 665 305

Net weigth kg 51 70

Shipping volume m 3 0,44 0,37

Shipping weight (approx.) kg 53 79

Data subject to change without notice.

NOTA. Rating conditions:

Cooling: Outside air temp.: 35°C DB, indoor unit entering air temp.: 27°C DB / 19°C WB

Heating: Outside air temp.: 7°C DB / 6°C WB, indoor unit entering air temp.: 20°C DB

4

1) UNIT SPECIFICATIONS

UNIT MODEL

INDOOR UNIT

OUTDOOR UNIT

ADR522HW

AE522SH

Power source 220 / 230 / 240V - 1 - 50 Hz

PERFORMANCES COOLING HEATING

Capacity

BTU/h 20.800 25400

W (Kcal/h) 6.100 (5246) 7.450 (6.407)

Air circulation (high - med - low) m 3 /h 1200

External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable

Moisture removal l/h 2,8

Voltage rating V 264

Available voltage range V 198 ÷ 264

Running ampere A 12 13.6

Power input W 2.650 2.970

Power factor % 96 95

Compressor locked rotor amperes A 70

C.O.P. W/W 2.3 2.5

FEATURES

Controls Microprocessor

Control unit Remote control

Temperature control I.C. thermostat

Timer ON/OFF 12 hours

Fan speed indoor / outdoor 3 and auto / 2 auto

Air filter Washable, easy access

Compressor Rotary (hermetic)

Refrigerant / ref. control / amount charged at ship g R22 / capillary tube / 2.28 g

Operation sound

Indoor Hi / Me / Lo (1 m) dB-A

Outdoor Hi / Lo (3 m) dB-A

38 / 33 / 29

55 / 52

Max. tubing length m (with factory R22 charge) 10

Max. allowable tubing length m ...( with .

R22 .

addition) .....................

30

Required amount of additional refrigerant g/m 25

Limit of elevation difference m between the two units 7

Refrigerant tube diameter

Narrow tube mm (in.)

Wide tube mm (in.)

6,35 (1/4”)

15,88 (5/8”)

Accessory Booster cable

DIMENSIONS AND WEIGTH INDOOR UNIT OUTDOOR UNIT

Higth mm 316 835

Width mm 1.050 850

Depth mm 665 305

Net weigth kg 51 70

Shipping volume m 3 0,44 0,37

Shipping weight (approx.) kg 53 79

Data subject to change without notice.

NOTA. Rating conditions:

Cooling: Outside air temp.: 35°C DB, indoor unit entering air temp.: 27°C DB / 19°C WB

Heating: Outside air temp.: 7°C DB / 6°C WB, indoor unit entering air temp.: 20°C DB

5

1) UNIT SPECIFICATIONS

UNIT MODEL

INDOOR UNIT

OUTDOOR UNIT

ADR522HW

AE522SH3

Power source 400V - 3N - 50 Hz (4 wires)

PERFORMANCES COOLING HEATING

Capacity

BTU/h 20.000 25.000

W (Kcal/h) 5.800 (4.988) 7.300 (6.278)

Air circulation (high - med - low) m 3 /h 1200

External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable

Moisture removal l/h 2.8 ----

Voltage rating V 400

Available voltage range V 342 ÷ 440

Running ampere A 4.5 4.8

Power input W 2.650 2.900

Power factor % 93 94

Compressor locked rotor amperes A 28

C.O.P. W/W 2,36 2,73

FEATURES

Controls Microprocessor

Control unit Remote control

Temperature control I.C. thermostat

Timer ON/OFF 12 hours

Fan speed indoor / outdoor 3 and auto / 2 auto

Air filter Washable, easy access

Compressor Rotary (hermetic)

Refrigerant / ref. control / amount charged at ship g R22 / capillary tube / 2,46 g

Operation sound

Indoor Hi / Me / Lo (1 m) dB-A

Outdoor Hi / Lo (3 m) dB-A

38 / 33 / 29

55 / 52

Max. tubing length m (with factory R22 charge) 10

Max. allowable tubing length m (with R22 addition) 20

Required amount of additional refrigerant g/m 25

Limit of elevation difference m between the two units 7

Refrigerant tube diameter

Narrow tube mm (in.)

Wide tube mm (in.)

6,35 (1/4”)

15.88 (5/8”)

Accessory Booster cable

DIMENSIONS AND WEIGTH INDOOR UNIT OUTDOOR UNIT

Higth mm 316 835

Width mm 1050 850

Depth mm 665 305

Net weigth kg 51 70

Shipping volume m 3 0.44 0.37

Shipping weight (approx.) kg 53 79

Data subject to change without notice.

NOTA. Rating conditions:

Cooling: Outside air temp.: 35°C DB, indoor unit entering air temp.: 27°C DB / 19°C WB

Heating: Outside air temp.: 7°C DB / 6°C WB, indoor unit entering air temp.: 20°C DB

6

1) UNIT SPECIFICATIONS

UNIT MODEL

INDOOR UNIT

OUTDOOR UNIT

ADR522HW

AER522SH3

Power source 400V - 3N - 50 Hz (4 wires)

PERFORMANCES COOLING HEATING

Capacity

BTU/h 19.500 26.000

W (Kcal/h) 5.700 (4.902) 7.400 (6.364)

Air circulation (high - med - low) m 3 /h 1200

External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable

Moisture removal l/h 2.8 -----

Voltage rating V 400

Available voltage range V 342 ÷ 440

Running ampere A 4.8 5

Power input W 2.750 3.000

Power factor % 83 86

Compressor locked rotor amperes A 28

C.O.P. W/W 2.1 2.5

FEATURES

Controls Microprocessor

Control unit Remote control

Temperature control I.C. thermostat

Timer ON/OFF 12 hours

Fan speed indoor / outdoor 3 and auto / 2 auto

Air filter Washable, easy access

Compressor Rotary (hermetic)

Refrigerant / ref. control / amount charged at ship g R407c / capillary tube / 2,40 g

Operation sound

Indoor Hi / Me / Lo (1 m) dB-A

Outdoor Hi / Lo (3 m) dB-A

39/ 33 / 29

55/ 52

Max. tubing length m (with factory R407c charge) 10

Max. allowable tubing length m (with R407c addition) 20

Required amount of additional refrigerant g/m 25

Limit of elevation difference m between the two units 7

Refrigerant tube diameter

Narrow tube mm (in.)

Wide tube mm (in.)

6,35 (1/4”)

15.88 (5/8”)

Accessory Booster cable

DIMENSIONS AND WEIGTH INDOOR UNIT OUTDOOR UNIT

Higth mm 316 835

Width mm 1050 850

Depth mm 665 305

Net weigth kg 51 70

Shipping volume m 3 0.44 0.37

Shipping weight (approx.) kg 53 79

Data subject to change without notice.

NOTA. Rating conditions:

Cooling: Outside air temp.: 35°C DB, indoor unit entering air temp.: 27°C DB / 19°C WB

Heating: Outside air temp.: 7°C DB / 6°C WB, indoor unit entering air temp.: 20°C DB

7

C

MAJOR COMPONENT SPECIFICATIONS

d) INDOOR UNIT

UNIT MODEL ADR522CW/ADR522HW

Power source 220 / 230 / 240V -1 - 50 Hz

REMOTE CONTROL UNIT RCS-U186QH

CONTROLLER P.C.B. POW-U226QH

Controls Microprocessor

Control circuit fuse 250V - 3A

FAN Centrifugal

Number ... dia. / length mm 2 ... Ø 200 / L 230

FAN MOTOR

Model ... Number K48415M01535 ... 1

Power source V 220 / 230 / 240-1-50 Hz

No. di poli ... giri/min (230V-max) 4 ... 800

Nominal output W 65

Coil resistance

(Ambient temp. 20°C)

Ω

WHT - BRN : 1 81,1

ORG - VLT : 1 36,8

YEL - ORG : 1 51,4

BLK - YEL : 1 20,6

WHT - VLT : 1 12,7

VLT - PNK : 1 44,2

SAFETY DEVICES Internal type

Open °C 130 ± 1 8

Operating temp.

Close °C 1 79 ± 15

Run capacitor

µF 5

VAC 440

DRAIN PUMP

Model PC

Rated

Voltage AC 230V - 50 Hz

Input 1 14.7 W

Total head capacity 0.4 m / 0.6 l/m

HEAT EXCHANGER

Coil Aluminum plate fin / Copper tube

Rows 2

Fin pitch mm 1.8

Fase area m 2 0.125

EXTERNAL FINISH Insulated galvanized metal sheet

8

Outdoor Unit AE522SH

Controller PCB

Type

Compressor model

Nominal output

Compressor oil ... Amount

Coil resistance (Ambient temp. 25°C)

Type

W cc

Ω

POW – C226GH

Rotary (Hermetic)

C – R221H5S 80687145B

2,200

4GSD – T or SAY-56T ... 1,350

C – R : 0.78

Internal protector

C – S : 2.41

External protector (OLR)

Safety

Overload relay devices Operating temp.

Open °C

—

Automatic opening

OL– D24

150 ± 5

Close °C Automatic reclosing 63 ± 11

Operating amp.(Ambient temp. 25°C) — Trip in 6 to 16 sec. at 59 A

Run capacitor µF 40.0

Crank case heater

Type

Number ... Dia.

Fan motor model ... Number

VAC 450 mm

240V 30W

Propeller

1 ... ø 460

Smen 19TFB6064 ... 1

No. of poles ... rpm (230 V, High) 6 ... 836

Nominal output W 50

Coil resistance (Ambient temp. 20°C)

Ω

WHT – BRN : 99.5 ± 7%

WHT – YEL : 252.0 ± 7%

Safety

Coil

Rows

Fin pitch

Face area

External Finish

Type devices Operating temp.

Run capacitor

Open

Close

°C

WHT – PNK : 63.2 ± 7%

Thermal protector

130 ± 5

Automatic reclosing

µF 5.0

VAC 440

Aluminum plate fin / Copper tube

2 mm m

2

2.0

0.610

Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

9

Outdoor Unit AE522SH3

Power source

Control circuit

CONTROLLER PCB

COMPRESSOR

Type

Compressor model

Source

Nominal output

Compressor oil ... Amount

Coil resistance (Ambient temp. 25°C)

Safety devices: Type

Overload relay

Operating temp.

Open

Close

Operating amp. (Ambient temp. 25°C)

C - R

C - S

R - S

Run capacitor

Crank case heater

FAN AND FAN MOTOR

Type

Number ... Dia.

Fan motor model ... Number

Source

No. of poles ... rpm (220 V)

Nominal output

Coil resistance (Ambient temp. 20°C)

WHT - BRN

WHT - YEL

WHT - PNK

Safety devices: Type

Operating temp.

Open

Close

Run capacitor

HEAT EXCH. COIL

Coil

Rows

Fin pitch

Face area

EXTERNAL FINISH

380 - 400 V - 3N ~ 50 Hz

220 - 240 V ~ 50 Hz

POW-C226GH

W cc

Ω

Ω

Ω

µF

VAC

Rotary (Hermetic)

C-R223H8S-806-871-88B

380 - 400 V - 3N ~ 50 Hz

2200

SUNISO4CS

4,97

4,64

4,88

Internal protector

//

°C Automatic opening

°C Automatic reclosing

//

... 1350

External protector

HOE-10TB TH-7A

//

//

7A

//

//

240 V - 30 W mm

W

Ω

Ω

Ω

°C

µF

VAC

Propeller

1 ... Ø460

Smen 19TFB6064 ... 1

220 - 240 V ~ 50 Hz

6 ... 840

50

99,5

252 ,0

63 ,2

Internal protector

130 ± 8

Automatic reclosing

5

440 mm m

2

Aluminum plate fin / Copper tube

2

2

0,61

Acrylic baked-on enamel finish

Data subject to change without notice.

10

Outdoor Unit AER522SH3

Power source

Control circuit

CONTROLLER PCB

COMPRESSOR

Type

Compressor model

Source

Nominal output

Compressor oil ... Amount

Coil resistance (Ambient temp. 25°C)

Safety devices: Type

Overload relay

Operating temp.

Open

Close

Operating amp. (Ambient temp. 25°C)

C - R

C - S

R - S

Run capacitor

Crank case heater

FAN AND FAN MOTOR

Type

Number ... Dia.

Fan motor model ... Number

Source

No. of poles ... rpm (220 V)

Nominal output

Coil resistance (Ambient temp. 20°C)

WHT - BRN

WHT - YEL

WHT - PNK

Safety devices: Type

Operating temp.

Open

Close

Run capacitor

HEAT EXCH. COIL

Coil

Rows

Fin pitch

Face area

EXTERNAL FINISH

380 - 400 V - 3N ~ 50 Hz

220 - 240 V ~ 50 Hz

POW-C226GH

W cc

Ω

Ω

Ω

°C Automatic opening

°C Automatic reclosing

µF

VAC

Rotary (Hermetic)

C-RN223H8A 80244088B

380 - 400 V - 3N ~ 50 Hz

Internal protector

//

//

2200

FV68S ... 1350

4,97

4,64

4,88

External protector

HOE-10TB TH-7A

//

//

7A

//

//

240 V - 30 W mm

W

Ω

Ω

Ω

°C

µF

VAC

Propeller

1 ... Ø460

Smen 19TFB6064 ... 1

220 - 240 V ~ 50 Hz

6 ... 840

50

99,5

252 ,0

63 ,2

Internal protector

130 ± 8

Automatic reclosing

5

440 mm m

2

Aluminum plate fin / Copper tube

2

2

0,61

Acrylic baked-on enamel finish

Data subject to change without notice.

11

Outdoor Unit AE522SC

Controller PCB

Type

Compressor model

Nominal output

Compressor oil ... Amount

Coil resistance (Ambient temp. 25°C)

Type

Safety devices

Overload relay

Operating temp.

Open

Close

°C

°C

Operating amp.(Ambient temp. 25°C)

Run capacitor µF

VAC

Crank case heater

Type

Number ... Dia.

Fan motor model ... Number mm

No. of poles ... rpm (230 V, High)

Nominal output

Coil resistance (Ambient temp. 20°C)

W

Ω

W cc

Ω

Safety

Type devices Operating temp.

Run capacitor

Coil

Rows

Fin pitch

Face area

External Finish

Open

Close

°C

µF

VAC mm m

2

—

Rotary (Hermetic)

C – R221H5S 80687145B

2,200

4GSD – T or SAY-56T ... 1,350

C – R : 0.78

Internal protector

C – S : 2.41

External protector (OLR)

—

Automatic opening

Automatic reclosing

—

40.0

400

240V 30W

Propeller

OL– D24

150 ± 5

63 ± 10

Trip in 6 to 16 sec. at 57 A

1 ... ø 460

Smen 19TFB6064 ... 1

6 ... 840

63

WHT – BRN : 99.5 ± 7%

WHT – YEL : 252.0 ± 7%

WHT – PNK : 63.2 ± 7%

Thermal protector

130 ± 5

Automatic reclosing

5.0

440

Aluminum plate fin / Copper tube

2

2.0

0.610

Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

12

Outdoor Unit AE522SC3

Controller

PCB

Part No. Johnson Control

Type Rotary (Hermetic)

Compressor model C-R223H8S - 806187188B

Source 380 – 400 V – 3N ~ 50 Hz

Nominal output W 2200

Compressor oil ... Amount cc SUNISO 4GSD-T ... 1350

Coil resistance (Ambient temp. 25°C) Ω C – R : 4.97

C – S : 4.64

R – S : 4.88

Safety devices

Type Internal protector External protector

Overload relay - HOE-10TB TH-7A

Operating temp.

Open °C 125 ± 5 —

Close °C Automatic reclosing —

Operating amp.(Ambient temp. 25°C) - 7A

µF

Run capacitor

—

VAC —

Crank case heater

Type

240V 30W

Propeller

Q´ty ... Dia. mm 1 ... ø460

Fan motor model ... Q´ty SMEN 19TFB6064 ... 1

Source 220 – 230 V ~ 50 Hz

No. of poles ... rpm (220 V, High) 6 ... 840

Nominal output W 50

Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 99.5 / WHT - YEL : 252

WHT – PNK : 63.2

Safety devices

Type

Operating temp.

Internal type

Open °C 130 ± 5

Close Automatic reclosing

Run capacitor

µF 5.0

VAC 400

Coil

Rows

Aluminum plate fin / Copper tube

2

Fin pitch mm 2.0

Face area m 2 0.610

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

13

Outdoor Unit AER522SCL3

Controller

PCB

Part No. Johnson Control

Type Rotary (Hermetic)

Compressor model C-RN223H8A 80244088B

Source 380 – 400 V – 3N ~ 50 Hz

Nominal output W 2200

Compressor oil ... Amount cc FV68S ... 1350

Coil resistance (Ambient temp. 25°C) Ω C – R : 4.97

C – S : 4.64

R – S : 4.88

Safety devices

Type Internal protector External protector

Overload relay HOE-10TB TH-7A —

Operating temp.

Open °C Automatic opening —

Close °C Automatic reclosing —

Operating amp.(Ambient temp. 25°C) 7A —

µF

Run capacitor

—

VAC —

Crank case heater

Type

240V 30W

Propeller

Q´ty ... Dia. mm 1 ... ø460

Fan motor model ... Q´ty SMEN 1STFB6064 ... 1

Source 220 – 230 V ~ 50 Hz

No. of poles ... rpm (220 V, High) 6 ... 840

Nominal output W 50

Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 99.5 / WHT - YEL : 252

WHT – PNK : 63.2

Safety devices

Type

Operating temp.

Internal type

Open °C 130 ± 5

Close Automatic reclosing

Run capacitor

µF 5.0

VAC 440

Coil

Rows

Aluminum plate fin / Copper tube

2

Fin pitch mm 2.0

Face area m 2 0.610

External Finish Acrylic baked-on enamel finish

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

14

D

OTHER COMPONENT SPECIFICATIONS

Outdoor Unit AE522SC

Power Relay

Coil rating

Coil resistance

Contact rating k

Ω

(at 23°C)

Thermostat (Fan Speed Control 23S)

Switching temp.

°C

Contact rating

Outdoor Unit AE522SC

Thermostat (Fan Speed Control 23S)

Switching temp.

°C

Magnetic Contactor (MG)

Coil rating

Coil resistance

Ω

(at 25°C)

Contact rating (Main)

G7L-2A-TUB

AC 200 – 240V, 50/60Hz

( 21 ± 15% )

AC 220V, 25A

MQT5S-27YZJ high ➞ LOW low ➞ HIGH

AC 220V, 3A

YTB-S383 high ➞ LOW 28.5°C ± 1 low ➞ HIGH 31°C ± 1

HE-20FT31B

AC 220/240V, 50Hz

1,050 ± 15%

AC 220-240V, 20A

15

Outdoor Unit AE522SC3

Electro Magnetic Contactor (MG)

Magnetic Contactor

Coil rating

Coil resistance

Ω

(at 25°C)

Contact rating (Main)

Thermal relay (Overcurrent relay)

Operating amperes

Negative Phase Relay (47C)

Rating

Contact rating

Operation

Thermostat (Fan Speed Control 23S)

Switching temp.

°C

HOE-10TB TH-7A

AC 220–240V, 50Hz / AC 240–260V, 60Hz

1,260 ± 10%

AC 440V, 8A

7A

RDR-S400

AC 415V, 3-phase 50Hz

AC 400V, 1A

Positive phase: ON

Negative phase: OFF

YTB-S383 high → LOW 28.5°C ± 1 low → HIGH 31°C ± 1

16

Outdoor Unit AER522SCL3

Electro Magnetic Contactor (MG)

Magnetic Contactor

Coil rating

Coil resistance

Ω

(at 25°C)

Contact rating (Main)

Thermal relay (Overcurrent relay)

Operating amperes

Negative Phase Relay (47C)

Rating

Contact rating

Operation

Thermostat (Fan Speed Control 23S)

Switching temp.

°C

HOE-10TB TH-7A

AC 220–240V, 50Hz / AC 240–260V, 60Hz

1,260 ± 10%

AC 440V, 8A

7A

RDR-S400

AC 415V, 3-phase 50Hz

AC 400V, 1A

Positive phase: ON

Negative phase: OFF

YTB-S383 high → LOW 28.5°C ± 1 low → HIGH 31°C ± 1

Pressure Trasducer (Johnson C.) P35 AC

Range Bar 14 to 24

Factory Setting Bar 16 ± 0.5

17

Outdoor Unit AE522SH

Magnetic Contactor (MG)

Coil rating

Coil resistance

Ω

(at 25°C)

Contact rating (Main)

Thermostat (Defrost thermo. 23D)

Operating temp.

°C

Thermostat (Fan Speed Control 23S)

Switching temp.

°C

4-way Valve (20S)

Coil rating

Coil resistance

Ω

(at 20°C)

HE-20FT31B

AC 220/240 V,50Hz

1.050 ± 15%

AC 220V, 20A

TRS02-12MSR316

ON 12 ± 2

Diff.

8 deg. below

YTB-S383 high ➞ LOW 28.5°C ± 1 low ➞ HIGH 31°C ± 1

LB64012 (Coil), V26-110B (Valve)

AC 220-240V, 50Hz, 6W

1.640 ± 7%

18

Outdoor Unit AE522SH3

Electro Magnetic Contactor (MG)

Magnetic Contactor

Coil rating

Coil resistance

Ω

(at 25°C)

Contact rating (Main)

Thermal relay (Overcurrent relay)

Operating amperes

Negative Phase Relay (47C)

Rating

Contact rating

Operation

4-way Valve (20S)

Coil rating

Coil resistance

HOE-10TB TH-7A

AC 220–240V, 50Hz / AC 240–260V, 60Hz

1,260 ± 10%

AC 440V, 8A

7A

RDR-S400

AC 415V, 3-phase 50Hz

AC 400V, 1A

Positive phase: ON

Negative phase: OFF

LB64012 (Coil), V26-110D (Valve)

AC 220/240V, 50Hz, 6W

1,740 ± 7%

Ω

(at 20°C)

High pressure switch (HPS) ACB - IB29

Operating press. setting

OFF 25 ± 1

ON 20 ± 1.5

Thermostat (Defrost thermo. 23D)

Operating temp.

°C

TRS02-12MSR316

ON 12 ± 2

Diff.

8 deg. below

Thermostat (Fan Speed Control 23S)

Switching temp.

°C high →

YTB-S383

LOW low → HIGH

28.5°C ± 1

31°C ± 1

19

Outdoor Unit AER522SH3

Electro Magnetic Contactor (MG)

Magnetic Contactor

Coil rating

Coil resistance

Ω

(at 25°C)

Contact rating (Main)

Thermal relay (Overcurrent relay)

Operating amperes

Negative Phase Relay (47C)

Rating

Contact rating

Operation

4-way Valve (20S)

Coil rating

Coil resistance

HOE-10TB TH-7A

AC 220–240V, 50Hz / AC 240–260V, 60Hz

1,260 ± 10%

AC 440V, 8A

7A

RDR-S400

AC 415V, 3-phase 50Hz

AC 400V, 1A

Positive phase: ON

Negative phase: OFF

LB64012 (Coil), V26-110D (Valve)

AC 220/240V, 50Hz, 6W

1,740 ± 7%

Ω

(at 20°C)

High pressure switch (HPS) ACB - IB29

Operating press. setting

OFF 25 ± 1

ON 20 ± 1.5

Thermostat (Defrost thermo. 23D)

Operating temp.

°C

TRS02-12MSR316

ON 12 ± 2

Diff.

8 deg. below

Thermostat (Fan Speed Control 23S)

Switching temp.

°C high →

YTB-S383

LOW low → HIGH

28.5°C ± 1

31°C ± 1

20

E

DIMENSIONAL DATA

200

21

Outdoor Unit

Air intake

130

Air discharge

620 100

20

20

6 – ø3.1 holes

250

850

250

Wide tube service valve ø15.88 (5/8")

Narrow tube service valve ø6.35 (1/4")

285

86

88

155

Unit : mm

22

F

FUNCTION

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.

SET T + 0,5

ϒ

C

TEMPERATURE T

ϒ

C

MORE THAN

5 MINUTES

THERMO OFF

COMPRESSOR ON

ROOM TEMPERATURE

WITHIN

3 MINUTES

WITHIN

5 MINUTES

MORE THAN

3 MINUTES

OFF

THERMO

ON

THERMO

OFF

THERMO

ON THERMO

OFF

MORE THAN

5 MINUTES 3 MINUTES 5 MINUTES

ON OFF ON

OUTDOOR

FAN ON OFF ON

INDOOR

FAN

SET SPEED (MANUAL)

NOTA

• 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 in equal to or below set temperature T°C.

Compressor ➔ OFF.

23

Heating

MORE THAN

5 MINUTES

SET TEMP.

T

°

C

T-0.5

°

C

THERMO

OFF

THERMO

ON

COMPRESSOR

OFF

OUTDOOR

FAN

OFF

5 MINUTES

ON

INDOOR

FAN

OFF

LL

❆

OFF ON

STANDBY LAMP

INDOOR HEAT

EXCH. COIL

TEMP. 35

°

C

25

°

C

ON

SET SPEED

OFF

5 MINUTES

OFF

OFF

30 SECONDS

LL

❆

ON

SOLENOID COIL

(4-WAY VALVE)

OFF

OPERATION

BUTTON OFF ON

ROOM TEMP.

ON

ON (REVERSING CYCLE)

ON

SET SPEED

OFF

L L = Low low speed ❆

COLD DRAFT PREVENTION

THERMO

OFF

OFF

OFF

30 SECONDS

LL

❆

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.

24

2) 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.

THERMO OFF

THERMO ON

ROOM TEMP.

SET

TEMP.

T +0.5

°

C

T

°

C

INDOOR

HEAT EXCH.

COIL TEMP.

–1

°

C

6 MINUTES

AFTER

6 MINUTES

MORE THAN

10 MINUTES

ON

MORE THAN

10 MINUTES

ON ON

COMPRESSOR

INDOOR

FAN

SET SPEED SET SPEED

3) OVERLOAD PREVENTION (HEATING)

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

For indoor units SAP-UR228EH only

INDOOR HEAT

EXCH. COIL

TEMP.

°

C

OUTDOOR

FAN

INDOOR

FAN

61

59

52

49

COMPRESSOR

ON OFF

H o M o L H ➔ H, M ➔ M, L ➔ M

ON

ON

H = High speed

M = Medium speed

L = Low speed

• When the temperature of the indoor heat exchange coil rises above 59°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 61°C, the outdoor fan stops.

25

For indoor units ADR522HW only

INDOOR HEAT

EXCH. COIL

TEMP.

°

C

59

49

INDOOR

FAN

COMPRESSOR

H o M o L H ➔ H, M ➔ M, L ➔ M

ON

H = High speed

M = Medium speed

L = Low speed

• When the temperature of the indoor heat exchange coil rises above 59°C, and if the indoor fan is L (low speed), then the fan speed changes from L (low speed) to M (medium speed).

26

4) DEFROSTING OPERATION (Heating)

• When the capacity of the unit has been decreesed due to frosting up of the outdoor heat exchanger during heating, the temperature drop gradient is detected by the microcomputer-controlled temperature sensing system, and defrosting operation is started.

DEFROSTING FLOWCHART

Compressor ON

A B C

Temperature of indoor heat exchanger coil is lower than

45°C

Integrated operating time of compressor is longer than

3 hours

Integrated operating time of compressor is longer than

1.5 hours

YES

Temperature in indoor heat exchanger coil drops 0.8

deg/6 min. or more and repeats 3 times continuously.

Compressor keeps running for 5 minutes

YES

Thermo OFF

(Compressor OFF)

YES

Temperature of indoor heat exchanger coil is lower than

53°C.

YES

Integrated operating time of compressor is more than

20 minutes.

YES

Defrosting thermo in the outdoor unit is OFF.

(Below 4°C)

YES

NO

Thermo ON

(Compressor ON)

YES

Defrosting begins.

Cold-draft prevention.

Temperature of outdoor heat exchange coil is higher than

12°C.

Defrosting time is over

11.5 minutes.

Release of defrosting.

27

5) DEFROSTING MODE TIMING CHART

START OF DEFROSTING

32 SECONDS

COMPRESSOR

OUTDOOR

FAN

ON

ON

SOLENOID COIL

(4-WAY VALVE)

INDOOR

FAN

ON

SET SPEED

OFF ON

2 SECONDS

OFF ON

STANDBY LAMP

INDOOR HEAT

EXCH. COIL

TEMP. 35

°

C

RELEASE OF DEFROSTING

MAX. 11 MINUTES 32 SECONDS

ON

OFF

OFF

OFF

2 SECONDS

ON

ON

ON

ON

OFF

L L = Low low speed

RELEASE OF

COLD DRAFT PREVENTION

6) OUTDOOR FAN SPEED CONTROL (COOLING)

• To optimize performance of the air conditioner, the outdoor fan speed is switched automatically according to the outdoor temperature.

• If the outdoor air temperature falls below 28.5°C, the fan speed switches to LOW.

• If the outdoor air temperature rises above 31.5°C for 5 minutes or longer, the fan speed switches to HIGH.

• This function does not become active in heating operation.

OUTDOOR AIR

TEMPERATURE (

°

C)

31,5

28,5

OUTDOOR FAN

SPEED

H = High speed

L = Low speed

H

L

H

28

G

REFRIGERANT FLOW DIAGRAM

Indoor Unit ADR522CW

Indoor Unit

Outdoor Unit AE522SC

AE522SC3/AER522SCL3

Outdoor Unit

Wide tube

Wide tube service valve

O.D.

ø15.88 mm

(5/8 ")

Muffler Accumulator

Capillary for liquid injection

Compressor

Narrow tube

Narrow tube service valve

O.D.

ø6.35 mm

(1/4")

Check port

Capillary tube Strainer

Indoor Unit ADR522HW

Outdoor Unit AE522SH

AE522SH3/AER522SH3

29

3) For AER522SCL3 only (3 phase and low ambient version)

• When the outside ambient temperature decreases, the rotation speed of the outdoor fan is regulated by means of the outdoor heat-exchanger sensor to prevent liquid back.

• The rotation speed varies with indoor temperature conditions (Hatching area).

• The unit is protected against high pressure by means of the outside temperature sensor, and thus when the outside ambient temperature reaches 30 ° C respectively, the fan speed is forced to high.

CONDITIONS: ROOM TEMPERATURE 19,4 ° C DB / 13,9 ° C WB 220V - 50 HZ

800

900 rpm

▲

▲

▲

600

400 ▲

200

0

OUTDOOR AMBIENT TEMPERATURE (

°

C)

30

F

ELECTRIC DIAGRAMS

Outdoor Unit ADR522CW

ADR522HW

E

BLK

BLK

WHT

GRN/YEL

TP1

1

2

ORG 4

RY

GRY

GRY

WHT

VLT

ORG

YEL

BLK

BRN

PNK

BLK

BRN

1 1

2 2

1

1

2

2

3 4

3 4

UNIT

SUP TH

1 1

2 2

WHT

WHT

9

8

5

4

7 7

6 6

5

4

9

8

3 3

2 2

1 1

GRY 1 1

2 2

BRN

VLT

ORG

YEL

BLK

BRN

6 6

5 5

4 4

3 3

2 2

1 1

VLT

ORG

YEL

BLK

BRN

12P

4

9

1

12

BODY

THERMO

FMI PR

1 1

2 2

1

2

1

2

BLK

BLK

WHT

WHT

TR

C1

TH1 (COIL)

TH2 (ROOM)

235V P-C

FMI

PCB1

GRN/YEL

E

LFS

BLK

BLK

1 1

2 2

BLK

BLK

1

2

FS

E

GRN/YEL

DP BLK

BLK

1 1

2 2

BLU

WHT

DP1

DP2

SEC

1 1

2 2

BLK

BRN

1 1

S S

5 5

1 1

S S

12 12

S-0 19V

REMOTE

CONTROL

SWITCH

E

GRN/YEL

BLK

31

PNK

Outdoor Unit AE522SH

AE522SH3 AER522SH3

32

Outdoor Unit AE522SC

AER522SCL3

TP2

1

2 GRY

4

L1

L2

L3

N

GRY

GRY

BRN

WHT

S

R

47C

T B

C

A

RED

RED

BLU

WHT

RED

GRY

GRN/YEL

GRN/YEL

GRY

A R S

MG

B

U

8

7

U

V

T 13

W 14

W

R

S

T

CM

CC

GRY

C2

YEL BRN PNK GR

FMO

33

H

TROUBLESHOOTING HEATING MODEL

1) CHECK BEFORE AND AFTER “TROUBLESHOOTING” a) Check power supply wiring.

• WARNING:

If the following troubleshooting must be done with power being supplied, be careful about any uninsulated live part that can cause ELECTRIC SHOCK.

• Check that power supply wires are correctly connected to terminals:

Single-phase system –No. 1 and No. 2 on the terminal plate in the outdoor unit.

Three-phase system – A D R 5 2 2 H W / A E 5 2 2 S H 3 - A E R 5 2 2 S H 3

No. 8,9,10 and No. 11 on the terminal plate in the outdoor unit.

b) Check inter-unit wiring.

• Check that inter-unit wiring (both the power wiring and control wiring) is correctly connected to the indoor unit from the outdoor unit.

ADR522HW / AE522SH

POWER SUPPLY

50 Hz - Single-phase

220/230/240 V

POWER

SUPPLY

GROUND e f g h a b c d

GROUND e f g h a b c d

INTER-UNIT

CONTROL WIRING

ADR522HW / AE522SH3-AER522SH3

POWER SUPPLY

50 Hz - 3-phase 400V

4 Wires

INTER-UNIT

OUTDOOR INDOOR

UNIT UNIT e f g h a b y d

GROUND e f g h a b y d

POWER

SUPPLY

L1

L2

L3

N a b c d e f

INTER-UNIT

CONTROL WIRING

GROUND

34

(c) Check power supply

• Check that voltage is in specified range (± 10% of the rating).

• Check that power is being supplied

Single-phase systems

L

N

230V

Three-phase systems

L1

400V

L2

400V

L3

N

(d) 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 connected firmly.

• Check that wiring is correct.

400V

230 V

35

2) SYSTEMATIC CHART OF “TROUBLESHOOTING”

Air conditioner does not operate.

Circuit breaker trips (or fuse blows).

Neither indoor unit nor outdoor unit runs.

When circuit breaker is set to ON, it trips in a few moments.

Circuit breaker trips in several minutes after turning air conditioner

ON.

Measure insulation resistance of power supply wires.

Check capacity of circuit breaker. Meaure resistance of electrical components.

Power is not supplied.

Function of compressor winding protection works.

Indoor unit sensor are defective.

Open or short circuit.

Limit float switch has operated “OPEN”.

Indoor unit installed upside - down.

Check power supply.

Check drain pump and drain hose.

Reposition the indoor unit.

36

3) AIR CONDITIONER DOES NOT OPERATE

(a) Circuit breaker trips (or fuse blows)

• When circuit breaker is set to ON, it trips in a few moments. (Resetting is not possible).

• Measure insulation resistance there is a possibility of ground fault. If resistance value is 1M

Ω or less, insulation is defective.

ADR522HW / AE522SH

Power supply

Circuit breaker

Inter-unit power wiring

Unità a b c

Outdoor Unità esterna unit z 5

6

Ground

7

3

4 x x

8

7

8

5

6

3

4

1

2 x x x x x x x x x x x x x x

7

8

5

6

3

4

1

2

Indoor unit

Inter-unit control wiring

ADR522HW - AE522SH3-AER522SH3

L1

L2

L3

N

Circuit breaker

Power supply wiring

Unit x x x x

Inter-unit power wiring a b c

Outdoor Unità unit

Indoor unit

1

2 x x 2 z z

4 x x 4

5 x x x x

1

5

6 x x 6

7 x x 7

8 x x 8

1

2

3

4

5

6

Inter-unit control wiring z

Ground

37

• Set circuit breaker to OFF.

➀

Remove power supply wires from terminal plate in outdoor unit.

• Measure insulation resistance of power supply wires.

➁

Remove inter-unit wires from terminal plate in outdoor unit.

• Measure insulation resistance of outdoor unit.

OK

Do rewiring

Insulation of outdoor unit is defective.

YES

Measure insulation resistance of electrical parts in outdoor unit.

➂

Remove inter-unit wires from terminal plate in intdoor unit.

• Measure insulation resistance of intdoor unit.

Insulation of indoor unit is defective.

YES

Measure insulation resistance of electrical parts in indoor unit.

➃

Measure insulation resistance of inter-unit wires.

OK

Do rewiring.

38

(b) Circuit breaker trips in several minutes after turning air conditioner ON.

• There is a possibility of short circuit.

Check capacity of circuit breaker.

Capacity of circuit breaker is suitable?

YES

NO Replace it with suitable one.

(larger capacity).

Measure resistance of outdoor fan motor winding.

In case of Heating operation:

Measure resistance of 4-way valve’s winding. (20S or SC).

OK

Measure resistance of outdoor fan motor winding.

OK

Outdoor unit

AE522SH

AE522SH3-AER522SH3 only

Measure coil resistance of magnetic contactor. (MG or

52C)

(c) Neither indoor unit nor outdoor unit runs (leds of remote control unit are light)

Circuit breaker is tripped.

Reset the breaker.

Check power supply.

Is power being supplied to wall receptacle?

NO

Power failure.

Wait for recovery or contact power company.

YES

Check is drain flow prevented?

NO

Check if the drain pump is working.

Measure resistance of drain pump motor winding.

YES

Check function of limit float switch.

Float in high position: open circuit.

Float in down position: short circuit.

(Normal condition)

YES

Check installation of indoor unit it is installed upside - down?

NO

NO

YES

Check drain hose.

Replace drain pump.

Replace limit float switch.

Reposition the indoor unit.

39

(d) Check fuse on PCB Ass’y in indoor unit

Check fuse on PCB Ass’y in indoor unit for continuity.

If fuse blows, there is a possibility of short circuit.

Measure resistance of primary winding of transformer.

OK

Measure resistance of indoor fan motor winding.

OK

Measure resistance of drain pump winding.

OK

Measure coil resistance of power relay or magnetic contactor in outdoor unit.

PCB Ass’y in indoor unit is defective.

e) Check transformer in indoor unit

Check whether transformere is detective.

Measure resistance of primary and secondary winding.

f) Check indoor fan motor protector

Wait for 30 minutes and then try to run.

Air conditioner starts running.

Air conditioner does not run again.

Indoor fan motor internal protector trips.

Check fan casing for foreign matter on inside.

Remove foreign matter or repair.

Check fan rotation. Turn fan gently once or twice by hand.

Fan cannot be turned

Fan motor burnout or foreign matter in bearing.

Repair or replace.

4) ONLY OUTDOOR UNIT DOES NOT RUN a) Outdoor unit does not run when air conditioner is in following conditions.

• During thermo OFF.

• During freeze prevention (for at least 6 minutes).

• During drain pump works (for at least 12 minutes).

b) PCB Ass’y in indoor unit is defective.

40

L

SOME PARTS OF AIR CONDITIONER DO NOT OPERATE

1) ONLY INDOOR FAN DOES NOT RUN

Check fan casing for foreign matter on inside.

Remove foreign matter or repair.

Check fan rotation. Turn fan gently once or twice by hand.

Fan cannot be turned

Fan motor burnout or foreign matter in bearing.

Repair or replace.

Fan turn normal

Check fan motor capacitor.

OK

Measure resistance of fan motor winding.

OK

Check output of fan motor terminals on PCB Ass’y.

NO

NO

Replace capacitor.

Replace fan motor.

2) ONLY OUTDOOR FAN DOES NOT RUN

Check fan rotation. Turn fan gently once or twice by hand.

Fan cannot be turned.

Check fan casing for foreign matter on inside.

Fan motor burnout or foreign matter in bearing.

Remove foreign matter or repair.

Repair or replace.

Measure the resistance of outdoor fan motor winding.

OK

Check fan motor capacitor.

Defrost controller (POW-C92 GH) is defective in outdoor unit.

41

OK

3) ONLY COMPRESSOR DOES NOT RUN a) Single phase systems 230V - 1 - 50 Hz

Measure resistance of compressor motor winding.

OK

Check compressor motor capacitor. (Either C1 or BC).

OK

Check power supply voltage.

Voltage is abnormally low.

YES

Contact power utility company to have power voltage restored to normal

NO

90% or more of rated voltage.

Check compressor.

There is a possibility of locked rotor.

Either overload relay or internal protector is working.

(Either OLR or 49C).

YES

Temperature of compressor is abnormally high.

OK

Outdoor unit AE522SH

Check continuity between terminals on the magnetic contactor (MG).

YES

Refrigerant gas shortage.

NO

Rotor may be locked up.

YES

YES

Charge refrigerant gas

(R22)

Replace compressor.

42

b) Three-phase systems 400V - 3N - 50 Hz

Check negative phase relay (47C) to see if it has operated.

NO

Check magnetic contactor. (MG)

O.K.

Check thermal relay (51C) to see if it has operated.

YES

Check power supply voltage.

Voltage is abnormally low.

NO

90% or more of rated voltage.

Check compressor.

There is a possibility of locked rotor.

YES

YES

Rewire power supply wires.

Contact power utility company to have power voltage restored to normal

Check compressor motor internal protector. (49C)

Temperature of compressor is abnormally high.

YES

Refrigerant gas shortage.

NO

Compressor is defective.

Charge refrigerant gas.(R22 or R407C

43

M a)

AIR CONDITIONER OPERATES, BUT ABNORMALITIES OCCUR

POOR COOLING OR

POOR HEATING

Check installation position of remote control unit.

Does cool or heat air from air conditioner reach position directly?

YES

Change installation position of remote control unit.

Refrigerant flow failure

Air circulation is a little

Is heating or cooling load too large?

Review heating or cooling load estimate.

4 way valve is defective.

Replace.

Measure temperatures of suction and discharge air of air conditioner.

Temperature difference is small

Possibility of gas shortage.

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

Check for clogging of air filter.

Air filter is clogged

Charge refrigerant gas

(R22 OR 407C)

Clean filter

Refrigerant gas shortage.

Charge refrigerant gas.

Compressor is defective.

Service valves are not fully open.

Air filter is clogged.

Replace.

Open the valves fully.

Clean filter in the air intake grille.

Is fan speed set to LOW?

Long extension of ducts.

Refrigerant tubes between indoor and outdoor units are not insulated.

4 way valve is defective.

Set the fan speed to either MEDIUM or HIGH.

Use the booster cable.

Insulate wide and narrow tubes separately.

Replace.

Cold air is discharged

Cold draft prevention is mal function

“STANDBY” is displayed.

Indoor coil sensor is defective.

Replace P.C.B. Ass’y in the indoor unit.

Replace.

b) Excessive cooling or heating

Is remote control unit installed at a place where it can detect room temperature properly!

NO

Change installation position of remote control unit.

44

N

TROUBLESHOOTING COOLING MODEL

1) CHECK BEFORE AND AFTER “TROUBLESHOOTING” a) Check power supply wiring.

• WARNING:

If the following troubleshooting must be done with power being supplied, be careful about any uninsulated live part that can cause ELECTRIC SHOCK.

b) Check inter-unit wiring.

• Check that inter-unit wiring (both the power wiring and control wiring) is correctly connected to the indoor unit from the outdoor unit.

ADR522CW - AE522SC

POWER SUPPLY

50 Hz - Single-phase

220/230/240 V

POWER

SUPPLY

GROUND

OUTDOOR INDOOR

WIRING

UNIT UNIT

➀

➁

➂

➃

➄

➀

➁

➂

➃

ADR522CW - AE522SC3

ADR522CW - AER522SCL3

POWER SUPPLY

50 Hz - 3-phase 400V

4 Wires

GROUND

POWER

SUPPLY

L1

L2

L3

N

➄

➅

➆

➇

➀

➁

➂

➃

WIRING

UNIT UNIT

➄

➅

➆

➇

➀

➁

➂

➃

(c) Check power supply

• Check that voltage is in specified range (± 10% of the rating).

• Check that power is being supplied

Single-phase systems Three-phase systems

L L1

400V

230V

L2

400V

N L3

N

45

400V

230V

2) SYSTEMATIC CHART OF “TROUBLESHOOTING”

Air conditioner does not operate.

Circuit breaker trips (or fuse blows).

Neither indoor unit nor outdoor unit runs.

When circuit breaker is set to ON, it trips in a few moments.

Circuit breaker trips in several minutes after turning air conditioner

ON.

Measure insulation resistance of power supply wires.

Check capacity of circuit breaker. Meaure resistance of electrical components.

Power is not supplied.

Function of compressor winding protection works.

Indoor unit sensor are defective.

Open or short circuit.

Limit float switch has operated “OPEN”.

Indoor unit installed upside - down.

Check power supply.

Check drain pump and drain hose.

Reposition the indoor unit.

46

3) AIR CONDITIONER DOES NOT OPERATE

(a) Circuit breaker trips (or fuse blows)

• When circuit breaker is set to ON, it trips in a few moments. (Resetting is not possible).

• Measure insulation resistance there is a possibility of ground fault. If resistance value is 1M

Ω or less, insulation is defective.

ADR522CW - AE522SC

Circuit breaker

Power supply

ADR522CW - AE522SC3

ADR522CW- AER522SCL3

Unità esterna

Circuit breaker

Power sypply

L1

L2

L3

N

5

6

7

8

• Set circuit breaker to OFF.

➀

Remove power supply wires from terminal plate in outdoor unit.

• Measure insulation resistance of power supply wires.

a b c

Unità Outdoor Unità esterna unit x x

5

6

3

4 z

7

8

Ground

1

2 z

4

5 x x x x x x

Inter-uni wiring

1

2 z

4

5

Indoor unit a b c

Outdoor esterna

Unità unit x

5 1 x

6 x

5

7 x

6 z 7

8 Ground

8 2 z

4 x x x x x x x x

Inter-unit wiring

1

2 z

4

Indoor unit

OK

Do rewiring

➁

Remove inter-unit wires from terminal plate in outdoor unit.

• Measure insulation resistance of outdoor unit.

Insulation of outdoor unit is defective.

YES

Measure insulation resistance of electrical parts in outdoor unit.

➂

Remove inter-unit wires from terminal plate in intdoor unit.

• Measure insulation resistance of intdoor unit.

Insulation of indoor unit is defective.

YES

Measure insulation resistance of electrical parts in indoor unit.

➃

Measure insulation resistance of inter-unit wires.

OK

47

Do rewiring.

(b) Circuit breaker trips in several minutes after turning air conditioner ON.

• There is a possibility of short circuit.

Check capacity of circuit breaker.

Capacity of circuit breaker is suitable?

YES

NO Replace it with suitable one.

(larger capacity).

Measure resistance of compressor motor winding.

OK

Measure resistance of outdoor fan motor winding.

OK

Outdoor unit

AE522SC

AE522SC3/AER522SCL3 only

Measure coil resistance of magnetic contactor. (MG or

52C)

(c) Neither indoor unit nor outdoor unit runs

Circuit breaker is tripped.

Check power supply.

Is power being supplied to wall receptacle?

NO

Leds of remote control unit are light

Check is drain flow prevented?

NO

Check if the drain pump is working.

Measure resistance of drain pump motor winding.

YES

Check function of limit float switch.

Float in high position: open circuit.

Float in down position: short circuit.

(Normal condition)

YES

Check installation of indoor unit is it installed upside - down?

YES

NO

NO

Power failure.

YES

Reset the breaker.

Wait for recovery or contact power company.

Check drain hose.

Replace drain pump.

Replace limit float switch.

Reposition the indoor unit.

48

(d) Check fuse on PCB Ass’y in indoor unit

Check fuse on PCB Ass’y in indoor unit for continuity. (F)

If fuse blows, there is a possibility of short circuit.

Measure resistance of primary winding of transformer. (TR)

OK

Measure resistance of indoor fan motor winding. (FMI)

OK

Measure resistance of drain pump winding.

OK

Measure coil resistance of power relay or magnetic contactor in outdoor unit. (PR - MG - 52C)

PCB Ass’y in indoor unit is defective.

e) Check transformer in indoor unit

Check whether transformere is detective.

Measure resistance of primary and secondary winding. (TR) f) Check indoor fan motor protector

Wait for 30 minutes and then try to run.

Air conditioner starts running.

Air conditioner does not run again.

Indoor fan motor internal protector trips.

Check fan casing for foreign matter on inside.

Remove foreign matter or repair.

Check fan rotation. Turn fan gently once or twice by hand.

Fan cannot be turned

Fan motor burnout or foreign matter in bearing.

Repair or replace.

4) ONLY OUTDOOR UNIT DOES NOT RUN a) Outdoor unit does not run when air conditioner is in following conditions.

• During thermo OFF.

• During freeze prevention (for at least 6 minutes).

• During drain pump works (for at least 12 minutes).

b) PCB Ass’y in indoor unit is defective.

49

• Check magnetic contactor (only for AE522SC - AE522SC3 )

• Check coil resistance of magnetic contactor. (52C or MG)

• Check negative phase relay (only for AER522SCL3 - AE522SC3)

• Check negative phase relay to see if it has operated. (47C)

YES

• Rewire power supply wires.

5) COMPRESSOR MOTOR DOES NOT RUN (only for SAP AE522SC) a) Single phase systems 230V - 1 - 50 Hz

• Check compressor motor capacitor. (C1)

OK

• Measure resistance of compressor motor winding.

• Check overload relay and/or compressor motor internal protector. (OLR - 49C)

It has tripped

• Is outdoor heat exchanger coil dirty or are there obstacles near air suction inlet of outdoor unit?

NO

• Check power supply voltage. Is voltage abnormally low?

NO

• Is temperature of compressor abnormally high?

YES

• Refrigerant gas shortage.

50

b) Three - phase systems 400V - 3N - 50 Hz

• Measure resistance of compressor motor winding.

Is outdoor heat exchanger coil dirty or are there obstacles near air suction inlet?

YES

Clean heat exchanger or remove obstacles.

NO

Is temperature of compressor abnormally high?

YES

Refrigerant gas shortage.

YES

Charge refrigerant gas.

R22 or R407C.

• Check compressor motor overcurrent relay (51C).

It’s operated

• Check power supply voltage. Is voltage abnormally low?

NO

90% or more of rated voltage

• Check compressor.

There is a possibility of locked rotor.

51

O

SOME PARTS OF AIR CONDITIONER DO NOT OPERATE

1) ONLY INDOOR FAN DOES NOT RUN

Check fan casing for foreign matter on inside.

Remove foreign matter or repair.

Check fan rotation. Turn fan gently once or twice by hand.

Fan cannot be turned

Fan motor burnout or foreign matter in bearing.

Repair or replace.

Fan turn normal

Check fan motor capacitor.

OK

Measure resistance of fan motor winding.

OK

Check output of fan motor terminals on PCB Ass’y.

NO

NO

Replace capacitor.

Replace fan motor.

2) FUNCTION OF OUTDOOR FAN SPEED CONTROL DOES NOT WORK PROPERLY

(only for SAP-C228E5 / SAP-C228E38)

• Check thermostat in outdoor unit. (23S)

Only for low ambient version units (AER522SCL3)

• Check electronic fan speed regulator (SSR)

3) ONLY OUTDOOR FAN DOES NOT RUN

Check fan rotation. Turn fan gently once or twice by hand.

Fan cannot be turned.

Check fan casing for foreign matter on inside.

Fan motor burnout or foreign matter in bearing.

Remove foreign matter or repair.

Repair or replace.

Measure the resistance of outdoor fan motor winding.

OK

Check fan motor capacitor.

OK

Defrost controller (POW-C92 GH) is defective in outdoor unit.

52

P a)

AIR CONDITIONER OPERATES, BUT ABNORMALITIES OCCUR

POOR COOLING

Check installation position of remote control unit.

Does cool air from air conditioner reach position directly?

YES

Change installation position of remote control unit.

Is cooling load too large?

Review cooling load estimate.

Refrigerant flow failure

Air circulation is a little

Measure temperatures of suction and discharge air of air conditioner.

Temperature difference is small

Possibility of gas shortage.

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

Check for clogging of air filter.

Air filter is clogged

Charge refrigerant gas (R22

OR R407C)

Clean filter

Refrigerant gas shortage.

Charge refrigerant gas.

Compressor is defective.

Service valves are not fully open.

Air filter is clogged.

Replace.

Open the valves fully.

Clean filter in the air intake grille.

Is fan speed set to LOW?

Long extension of ducts.

Refrigerant tubes between indoor and outdoor units are not insulated.

Set the fan speed to either MEDIUM or HIGH.

Use the booster cable.

Insulate wide and narrow tubes separately.

b) Excessive cooling

Is remote control unit installed at a place where it can detect room temperature properly!

53

NO

Change installation position of remote control unit.

QP

CHECKING ELECTRICAL COMPONENTS

1) Measurement of Insulation Resistance

• The insuration is in good condition if the resistance exceeds 1 M

Ω.

(a) Power Supply Wires

Clamp the earthed 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 earthed wire and the other power wires (Fig. 1).

(b) Indoor Unit

Clamp an aluminium plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on ➀ , and then ➁ on the terminal plate (Fig. 2).

(c) 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 ➀ , and then

➁ on the terminal plate (Fig. 2).

(d) Measurement of Insulation Resistance for

Electrical Parts

Disconnect the lead wires of the disired electric part from terminal plate, PCB Ass’y, capacitor, etc.

Similarly disconnect the connector. Then measure the insuration resistance. (Fig. 1 to 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.

54

2) Checking Continuity of Fuse on PCB Ass’y

• Remove PCB Ass’y from electrical component box.

Then pull out the fuse from PCB Ass’y (Fig. 5).

• Check continuity of fuse by the multimeter (Fig. 6).

3) Checking Motor Capacitor

Remove the lead wiers 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 deffer according to capacity of the capacitor.

55

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