Panasonic Air Conditioner

Order No. MAC0712076C2

Air Conditioner

Indoor Unit Outdoor Unit

CS-E21HKES CU-E21HKE

CS-E24HKES CU-E24HKE

CS-E28HKE CU-E28HKE

TABLE OF CONTENTS

PAGE

1 Safety Precautions----------------------------------------------- 3

2 Specifications ----------------------------------------------------- 5

2.1. CS-E21HKES CU-E21HKE ---------------------------- 5

2.2. CS-E24HKES CU-E24HKE ---------------------------- 7

2.3. CS-E28HKE CU-E28HKE ------------------------------ 9

3 Features ------------------------------------------------------------ 11

PAGE

4 Location of Controls and Components------------------ 12

4.1. Indoor Unit ------------------------------------------------- 12

4.2. Outdoor Unit----------------------------------------------- 12

4.3. Remote Control------------------------------------------- 12

5 Dimensions ------------------------------------------------------- 13

5.1. Indoor Unit & Remote Control ------------------------ 13

© 2007 Panasonic HA Air-Conditioning (M) Sdn. Bhd.

(11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.

5.2. Outdoor Unit ----------------------------------------------- 14

6 Refrigeration Cycle Diagram -------------------------------- 16

7 Block Diagram --------------------------------------------------- 17

7.1. CS-E21HKES CU-E21HKE--------------------------- 17

7.2. CS-E24HKES CU-E24HKECS-E28HKE CU-

E28HKE ---------------------------------------------------- 18

8 Wiring Connection Diagram --------------------------------- 19

8.1. Indoor Unit ------------------------------------------------- 19

8.2. Outdoor Unit ----------------------------------------------- 20

9 Electronic Circuit Diagram----------------------------------- 23

9.1. Indoor Unit ------------------------------------------------- 23

9.2. Outdoor Unit ----------------------------------------------- 24

10 Printed Circuit Board ------------------------------------------ 27

10.1. Indoor Unit ------------------------------------------------- 27

10.2. Outdoor Unit ----------------------------------------------- 29

11 Installation Instruction ---------------------------------------- 33

11.1. Select The Best Location ------------------------------ 33

11.2. Indoor/Outdoor Unit Installation Diagram ---------- 33

11.3. Indoor Unit ------------------------------------------------- 34

11.4. Outdoor Unit ----------------------------------------------- 37

12 Operation and Control----------------------------------------- 41

12.1. Basic Function -------------------------------------------- 41

12.2. Airflow Direction ------------------------------------------ 43

12.3. Quiet operation (Cooling Mode/Cooling area of Soft Dry Mode) ---------------------------------------- 44

12.4. Powerful Mode Operation ------------------------------ 45

12.5. ON Timer Control ---------------------------------------- 46

12.6. OFF Timer Control --------------------------------------- 46

12.7. Auto Restart Control------------------------------------- 46

12.8. Indication Panel------------------------------------------- 46

12.9. Patrol Operation ------------------------------------------ 47

12.10. e-ion Operation ------------------------------------------- 49

13 Protection Control ---------------------------------------------- 52

13.1. Protection Control For All Operations --------------- 52

13.2. Protection Control For Cooling & Soft Dry

Operation--------------------------------------------------- 53

13.3. Protection Control For Heating Operation --------- 55

14 Servicing Mode -------------------------------------------------- 56

14.1. Auto OFF/ON Button ------------------------------------ 56

14.2. Select Remote Control Transmission Code ------- 56

14.3. Remote Control Button --------------------------------- 57

15 Troubleshooting Guide---------------------------------------- 58

15.1. Refrigeration Cycle System --------------------------- 58

15.2. Relationship Between The Condition Of The

Air Conditioner And Pressure And Electric

Current ------------------------------------------------------ 59

15.3. Breakdown Self Diagnosis Function ---------------- 60

15.4. Error Codes Table---------------------------------------- 61

16 Disassembly and Assembly Instructions --------------- 62

16.1. Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures ------ 62

17 Technical Data---------------------------------------------------- 67

17.1. Operation Characteristics ------------------------------ 67

17.2. Sensible Capacity Chart-------------------------------- 79

18 Exploded View and Replacement Parts List ----------- 80

18.1. CS-E21HKES CS-E24HKES CS-E28HKE ------ 80

18.2. CU-E21HKE ----------------------------------------------- 82

18.3. CU-E24HKE CU-E28HKE ---------------------------- 84

2

1 Safety Precautions

• Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.

• Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed.

• The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

This indication shows the possibility of causing death or serious injury.

This indication shows the possibility of causing injury or damage to properties.

• The items to be followed are classified by the symbols:

This symbol denotes item that is PROHIBITED from doing.

• Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

1. Engage dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage, electrical shock or fire.

2. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.

3. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

4. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

5. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

6. This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD).

Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.

7. Use the specified cable and connect tightly for indoor/outdoor connection. Connect tightly and clamp the cable so that no external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.

8. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock.

9. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle.

Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosive and injury.

10. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.

11. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.

12. When connecting the piping, do not allow air or any substances other than the specified refrigerant to enter the refrigeration cycle.

Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and possibly result in explosion and injury.

13. Do not damage or use unspecified power supply cord. Otherwise it will cause fire or electric shock.

14. Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with other electrical appliances. Otherwise, it will cause fire or electrical shock.

15. It is desirable that the amount of residual oil is less than 40 mg/10m.

Thickness of copper pipes used with R410A nust be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

16. During installation, before run the compressor, confirm the refrigerant pipes are fixed. Operation of compressor without fixing the piping, setting the valves at open condition, a burst may occur and cause injury.

17. After completion of the installation servicing confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.

18. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire.

3

1. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.

2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

3. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.

4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.

5. Select an installation location which is easy for maintenance.

6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50 qF - 70qF (30qC - 40qC) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20 qF (370 ± 10qC).

Pb free solder will tend to splash when heated too high (about 1100 qF / 600qC).

7. Power supply connection to the conditioner. Connect the power supply cord of the air conditioner to the mains using one of the following methods.

Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, permanent connection of this room air conditioner to the power supply is prohibited.

1. Power supply connection to the receptacle using a power plug. Use an approved power plug with earth pin for the connection to the socket.

2. Power supply connection to a circuit breaker for the permanent component. Use an approved circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.5 mm contact gap.

8. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigeration parts. Take care of the liquid refrigerant, it may cause frostbite.

9. Installation work. It may need two people to carry out the installation work.

10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

4

2 Specifications

2.1.

CS-E21HKES CU-E21HKE

ITEM

Performance Test Condition

I

N

G

C

O

O

L

Capacity

EER

Noise Level

I

N

G

H

E

A

T

Capacity

COP

Noise Level

Moisture Removal

Air Volume

Q-Lo

Lo

Me

Hi

UNIT

kW

BTU/h kCal/h

W/W

BTU/hW dB (A)

Power level dB kW

BTU/h kCal/h

W/W

BTU/hW dB (A)

Power level dB l/h pt/h m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min)

SHi

Refrigeration Control Device

Refrigeration Oil

Refrigerant (R410A)

Dimension

Height

Width

Depth

Net Weight

Pipe Diameter

Gas

Liquid

Standard Length

Pipe Length Range

Height Difference

Additional Gas Amount

Refrigeration Charge Less

Inner Diameter

Drain Hose

Length

Type

Compressor Motor Type

Rated Output W cm

3 g (oz) mm (inch) mm (inch) mm (inch) kg (lbs) mm (inch) mm (inch) m (ft) m (ft) m (ft) g/m (oz/ft) m (ft) mm mm

INDOOR UNIT OUTDOOR UNIT

EUROVENT

6.30 (0.90 ~ 7.10)

21500 (3070 ~ 24200)

5420 (770 ~ 6110)

2.85 (4.19 ~ 2.80)

9.7 (14.3 ~ 9.5)

Hi: 45, Lo:37, Q-Lo: 34

Hi: 58, Lo:50, Q-Lo: 47

7.20 (0.90 ~ 8.50)

24600 (3070 ~ 29000)

6190 (770 ~ 7310)

Hi: 48

Hi: 61

3.43 (3.67 ~ 3.09)

11.7 (12.5 ~ 10.5)

Hi: 45, Lo:37, Q-Lo: 34

Hi: 58, Lo:50, Q-Lo: 47

3.5

7.4

Hi: 49

Hi: 62

Cooling; 12.60 (444)

Heating; 13.53 (478)

Cooling; 13.12 (463)

Heating; 14.10 (498)

Cooling; 14.60 (516)

Heating; 15.60 (551)

Cooling; 16.2 (570)

Heating; 17.3 (610)

Cooling; 17.4 (614)

Heating; 17.9 (632)

Cooling; 42.8 (1510)

Heating; 41.5 (1460)

Expansion Valve

— RB68A or Freol Alpha68M (400)

275 (10-27/32)

998 (39-5/16)

230 (9-1/16)

10 (22)

12.7 (1/2)

6.35 (1/4)

5.0 (16.4)

3 (9.8) ~ 20 (65.6)

1.29k (45.5)

750 (29-17/32)

875 (34-15/32)

345 (13-19/32)

49 (108)

15 (49.2)

20 (0.2)

10 (32.8)

12

650

Hermetic Motor

Brushless (4-pole)

900

5

Fan

Heat Exchanger

ITEM

Type

Material

Motor Type

Input Power

Output Power

Fan Speed

Fin Material

Fin Type

Row x Stage x FPI

Q-Lo (Cool/Heat)

Lo (Cool/Heat)

Me (Cool/Heat)

Hi (Cool/Heat)

SHi (Cool/Heat)

Size (W x H x L)

UNIT

W

W rpm rpm rpm rpm rpm mm

INDOOR UNIT

Cross-Flow Fan

ASHT-18

Transistor (8-pole)

68

30

1100 / 1190

1160 / 1250

1330 / 1425

1500 / 1600

1660 / 1680

Aluminium (Pre Coat)

Slit Fin

2 x 15 x 19

810 x 315 x 25.4

OUTDOOR UNIT

Propeller Fan

PP

Transistor (8-pole)

74.8

40

700 / 680

Aluminium

Corrugated Fin

2 x 34 x 18

36.4 x 714 x 803

831

Air Filter

Material

Type

Polypropelene

One-Touch

1. Cooling capacities are based on indoor temperature of 27 qC Dry Bulb (80.6qF Dry Bulb), 19.0qC Wet Bulb (66.2qF Wet Bulb) and outdoor air temperature of 35 qC Dry Bulb (95qF Dry Bulb), 24qC Wet Bulb (75.2qF Wet Bulb)

2. Heating capacities are based on indoor temperature of 20 qC Dry Bulb (68qF Dry Bulb) and outdoor air temperature of 7qC Dry

Bulb (44.6

qF Dry Bulb), 6qC Wet Bulb (42.8qF Wet Bulb)

Power Source (Phase, Voltage, Cycle)

Input Power

Starting Current

Running Current

Maximum Current

Item Unit

ø

V

Hz

W

A

A

A

Power Factor %

Power factor means total figure of compressor, indoor fan motor and outdoor fan motor.

Number of core

Power Cord

Length m

Thermostat

Protection Device

Note

• Specifications are subject to change without notice for further improvement.

Single

230

50

Cooling; 2.21k (215 ~ 2.54k)

Heating; 2.10k (245 ~ 2.75k)

9.3

Cooling; 9.9

Heating; 9.3

12.6

Cooling; 97

Heating; 98

Electronic Control

Electronic Control

6

2.2.

CS-E24HKES CU-E24HKE

ITEM

Performance Test Condition

C

O

O

L

I

N

G

Capacity

EER

Noise Level

I

N

G

H

E

A

T

Capacity

COP

Noise Level

Moisture Removal

Air Volume

QLo

Lo

Me

Hi

UNIT

kW

BTU/h kCal/h

W/W

BTU/hW dB (A)

Power level dB kW

BTU/h kCal/h

W/W

BTU/hW dB (A)

Power level dB l/h pt/h m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min)

SHi

Refrigeration Control Device

Refrigeration Oil

Refrigerant (R410A)

Dimension

Height

Width

Depth

Net Weight

Pipe Diameter

Gas

Liquid

Standard Length

Pipe Length Range

Height Difference

Additional Gas Amount

Refrigeration Charge Less

Inner Diameter

Drain Hose

Length

Type

Compressor Motor Type

Rated Output W cm

3 g (oz) mm (inch) mm (inch) mm (inch) kg (lbs) mm (inch) mm (inch) m (ft) m (ft) m (ft) g/m (oz/ft) m (ft) mm mm

INDOOR UNIT OUTDOOR UNIT

EUROVENT

6.80 (0.90 ~ 8.10)

23200 (3070 ~ 27600)

5850 (770 ~ 6970)

3.21 (2.57 ~ 3.00)

10.9 (8.8 ~ 10.2)

Hi: 47, Lo: 38, Q-Lo: 35

Hi: 60, Lo: 51, Q-Lo: 48

8.60 (0.90 ~ 9.90)

29300 (3070 ~ 33800)

7400 (770 ~ 8510)

Hi: 52

Hi: 66

3.23 (2.50 ~ 3.09)

11.0 (8.5 ~ 10.6)

Hi: 47, Lo: 38, Q-Lo: 35

Hi: 60, Lo: 51, Q-Lo: 48

3.9

8.2

Hi: 52

Hi: 66

Cooling; 12.59 (445)

Heating; 13.57 (479)

Cooling; 13.50 (477)

Heating; 14.59 (515)

Cooling; 15.20 (537)

Heating; 16.44 (581)

Cooling; 16.9 (600)

Heating; 18.3 (650)

Cooling; 17.95 (634)

Heating; 18.45 (652)

Cooling; 54.5 (1925)

Heating; 54.5 (1925)

Expansion Valve

— FV50S (800)

275 (10-27/32)

998 (39-5/16)

230 (9-1/16)

11 (24)

15.88 (5/8)

6.35 (1/4)

5.0 (16.4)

3 (9.8) ~ 30 (98.4)

1.65k (58.2)

795 (31-5/16)

900 (35-7/16)

320 (12-5/8)

67 (148)

20 (65.6)

30 (0.3)

10 (32.8)

12

650

Hermetic Motor

Brushless (4-pole)

1.7k

7

Fan

Heat Exchanger

ITEM

Type

Material

Motor Type

Input Power

Output Power

Fan Speed

Fin Material

Fin Type

Row x Stage x FPI

Q-Lo (Cool/Heat)

Lo (Cool/Heat)

Me (Cool/Heat)

Hi (Cool/Heat)

SHi (Cool/Heat)

Size (W x H x L)

UNIT

W

W rpm rpm rpm rpm rpm mm

INDOOR UNIT

Cross-Flow Fan

ASHT-18

Transistor (8-pole)

85.1

30

1080 / 1170

1180 / 1280

1365 / 1480

1550 / 1680

1670 / 1700

Aluminium (Pre Coat)

Slit Fin

2 x 15 x 21

810 x 315 x 25.4

OUTDOOR UNIT

Propeller Fan

PP

Induction (6-pole)

97.8

76

700 / 700

Aluminium

Corrugated Fin

2 x 30 x 19

38.1 x 762 x 873.8

903.8

Air Filter

Material

Type

Polypropelene

One-Touch

1. Cooling capacities are based on indoor temperature of 27 qC Dry Bulb (80.6qF Dry Bulb), 19.0qC Wet Bulb (66.2qF Wet Bulb) and outdoor air temperature of 35 qC Dry Bulb (95qF Dry Bulb), 24qC Wet Bulb (75.2qF Wet Bulb)

2. Heating capacities are based on indoor temperature of 20 qC Dry Bulb (68qF Dry Bulb) and outdoor air temperature of 7qC Dry

Bulb (44.6

qF Dry Bulb), 6qC Wet Bulb (42.8qF Wet Bulb)

Power Source (Phase, Voltage, Cycle)

Input Power

Starting Current

Running Current

Maximum Current

Item Unit

ø

V

Hz

W

A

A

A

Power Factor %

Power factor means total figure of compressor, indoor fan motor and outdoor fan motor.

Number of core

Power Cord

Length m

Thermostat

Protection Device

Note

• Specifications are subject to change without notice for further improvement.

Single

230

50

Cooling; 2.12k (350 ~ 2.70k)

Heating; 2.66k (360 ~ 3.20k)

12.1

Cooling; 9.7

Heating; 12.1

14.6

Cooling; 95

Heating; 96

Electronic Control

Electronic Control

8

2.3.

CS-E28HKE CU-E28HKE

ITEM

Performance Test Condition

C

O

O

L

I

N

G

Capacity

EER

Noise Level

I

N

G

H

E

A

T

Capacity

COP

Noise Level

Moisture Removal

Air Volume

Q-Lo

Lo

Me

Hi

UNIT

kW

BTU/h kCal/h

W/W

BTU/hW dB (A)

Power level dB kW

BTU/h kCal/h

W/W

BTU/hW dB (A)

Power level dB l/h pt/h m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min)

SHi

Refrigeration Control Device

Refrigeration Oil

Refrigerant (R410A)

Dimension

Height

Width

Depth

Net Weight

Pipe Diameter

Gas

Liquid

Standard Length

Pipe Length Range

Height Difference

Additional Gas Amount

Refrigeration Charge Less

Inner Diameter

Drain Hose

Length

Type

Compressor Motor Type

Rated Output W cm

3 g (oz) mm (inch) mm (inch) mm (inch) kg (lbs) mm (inch) mm (inch) m (ft) m (ft) m (ft) g/m (oz/ft) m (ft) mm mm

INDOOR UNIT OUTDOOR UNIT

EUROVENT

7.65 (0.90 ~ 8.60)

26100 (3070 ~ 29300)

6580 (770 ~ 7400)

3.01 (2.57 ~ 2.92)

10.3 (8.8 ~ 9.9)

Hi: 49, Lo: 38, Q-Lo: 35

Hi: 62, Lo: 51, Q-Lo: 48

9.60 (0.90 ~ 11.00)

32700 (3070 ~ 37500)

8260 (770 ~ 9460)

Hi: 53

Hi: 67

2.91 (2.50 ~ 2.90)

9.9 (8.5 ~ 9.9)

Hi: 49, Lo: 38, Q-Lo: 35

Hi: 62, Lo: 51, Q-Lo: 48

4.5

9.5

Hi: 53

Hi: 67

Cooling; 12.59 (445)

Heating; 13.57 (479)

Cooling; 13.60 (480)

Heating; 14.59 (515)

Cooling; 15.60 (551)

Heating; 16.62 (587)

Cooling; 17.7 (625)

Heating; 18.7 (660)

Cooling; 18.22 (643)

Heating; 18.66 (659)

Cooling; 54.5 (1925)

Heating; 54.5 (1925)

Expansion Valve

— FV50S (800)

275 (10-27/32)

998 (39-5/16)

230 (9-1/16)

11 (24)

15.88 (5/8)

6.35 (1/4)

5.0 (16.4)

3 (9.8) ~ 30 (98.4)

1.69k (59.7)

795 (31-5/16)

900 (35-7/16)

320 (12-5/8)

70 (154)

20 (65.6)

30 (0.3)

10 (32.8)

12

650

Hermetic Motor

Brushless (4-pole)

1.7k

9

Fan

Heat Exchanger

ITEM

Type

Material

Motor Type

Input Power

Output Power

Fan Speed

Fin Material

Fin Type

Row x Stage x FPI

Q-Lo (Cool/Heat)

Lo (Cool/Heat)

Me (Cool/Heat)

Hi (Cool/Heat)

SHi (Cool/Heat)

Size (W x H x L)

UNIT

W

W rpm rpm rpm rpm rpm mm

INDOOR UNIT

Cross-Flow Fan

ASHT-18

Transistor (8-pole)

85.1

30

1080 / 1170

1180 / 1280

1410 / 1500

1640 / 1720

1700 / 1720

Aluminium (Pre Coat)

Slit Fin

2 x 15 x 21

810 x 315 x 25.4

OUTDOOR UNIT

Propeller Fan

PP

Induction (6-pole)

167.8

76

700 / 700

Aluminium

Corrugated Fin

2 x 30 x 19

38.1 x 762 x 873.8

903.8

Air Filter

Material

Type

Polypropelene

One-Touch

1. Cooling capacities are based on indoor temperature of 27 qC Dry Bulb (80.6qF Dry Bulb), 19.0qC Wet Bulb (66.2qF Wet Bulb) and outdoor air temperature of 35 qC Dry Bulb (95qF Dry Bulb), 24qC Wet Bulb (75.2qF Wet Bulb)

2. Heating capacities are based on indoor temperature of 20 qC Dry Bulb (68qF Dry Bulb) and outdoor air temperature of 7qC Dry

Bulb (44.6

qF Dry Bulb), 6qC Wet Bulb (42.8qF Wet Bulb)

Power Source (Phase, Voltage, Cycle)

Input Power

Starting Current

Running Current

Maximum Current

Item Unit

ø

V

Hz

W

A

A

A

Power Factor %

Power factor means total figure of compressor, indoor fan motor and outdoor fan motor.

Number of core

Power Cord

Length m

Thermostat

Protection Device

Note

• Specifications are subject to change without notice for further improvement.

Single

230

50

Cooling; 2.54k (350 ~ 2.95k)

Heating; 3.30k (360 ~ 3.79k)

15.3

Cooling; 11.8

Heating; 15.3

15.9

Cooling; 94

Heating; 94

Electronic Control

Electronic Control

10

3 Features

• Inverter Technology

- Wider output power range

- Energy saving

- Quick Cooling

- More precise temperature control

• E-ion Air Purifying System with Patrol Sensor

- Active e-ions are released to catch dust particles and bring them back the large positively charged filter

• Environment Protection

- Non-ozone depletion substances refrigerant (R410A)

Long Installation Piping

- CS/CU-E21HK, long piping up to 20 meter

- CS/CU-E24/28HK, long piping up to 30 meter

Easy to use remote control

Quality Improvement

- Random auto restart after power failure for safety restart operation

- Gas leakage protection

- Prevent compressor reverse cycle

- Inner protector to protect compressor

- Noise prevention during soft dry operation

• Operation Improvement

- Quiet mode to reduce the indoor unit operating sound

- Powerful mode to reach the desired room temperature quickly

- 24-hour timer setting

• Serviceability Improvement

- Breakdown Self Diagnosis function

11

4 Location of Controls and Components

4.1.

Indoor Unit

4.2.

Outdoor Unit

4.3.

Remote Control

12

5 Dimensions

5.1.

Indoor Unit & Remote Control

13

5.2.

Outdoor Unit

5.2.1.

CU-E21HKE

14

5.2.2.

CU-E24HKE, CU-E28HKE

15

6 Refrigeration Cycle Diagram

Model

E21HKE

E24HKE

E28HKE

Gas

Piping size

Liquid

1/2”

5/8”

5/8”

1/4”

1/4”

1/4”

Rated

Length

(m)

5

5

5

Max

Elevation

(m)

15

20

20

Min.

Piping

Length

(m)

3

3

3

Max.

Piping

Length

(m)

20

30

30

* If piping length is over common length, additional refrigerant should be added as shown in the table.

Additional

Refrigerant

(g/m)

20

30

30

16

7 Block Diagram

7.1.

CS-E21HKES CU-E21HKE

17

7.2.

CS-E24HKES CU-E24HKE

CS-E28HKE CU-E28HKE

18

8 Wiring Connection Diagram

8.1.

Indoor Unit

19

8.2.

Outdoor Unit

8.2.1.

CU-E21HKE

20

8.2.2.

CU-E24HKE

21

8.2.3.

CU-E28HKE

22

9 Electronic Circuit Diagram

9.1.

Indoor Unit

23

9.2.

Outdoor Unit

9.2.1.

CU-E21HKE

24

9.2.2.

CU-E24HKE

25

9.2.3.

CU-E28HKE

26

10 Printed Circuit Board

10.1. Indoor Unit

10.1.1.

Main Printed Circuit Board

27

10.1.2.

Power Printed Circuit Board

10.1.3.

Indicator Printed Circuit Board

28

10.2. Outdoor Unit

10.2.1.

Main Printed Circuit Board

10.2.1.1. CU-E21HKE

29

10.2.1.2. CU-E24HKE CU-E28HKE

30

10.2.2.

Power Printed Circuit Board

10.2.2.1. CU-E24HKE CU-E28HKE

31

10.2.3.

Noise Filter Printed Circuit Board

32

11 Installation Instruction

11.1. Select The Best Location

INDOOR UNIT

• There should not be any heat source or steam near the unit.

• There should not be any obstacles blocking the air circulation.

• A place where air circulation in the room is good.

• A place where drainage can be easily done.

• A place where noise prevention is taken into consideration.

• Do not install the unit near the door way.

• Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.

• Recommended installation height for indoor unit shall be at least 2.5 m.

OUTDOOR UNIT

• If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.

• There should not be any animal or plant which could be affected by hot air discharged.

• Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles.

• Do not place any obstacles which may cause a short circuit of the discharged air.

• If piping length is over 10 m, additional refrigerant should be added as shown in the table.

11.2.

Indoor/Outdoor Unit Installation

Diagram

Model

Piping size Rated

Gas Liquid

Max Min.

Length

(m)

Elevation

(m)

Piping

Length

(m)

Max.

Piping

Length

Additional

Refrigerant

(g/m)

(m)

E21HK 1/2” 1/4”

E24HK 5/8” 1/4”

5

5

15

20

3

3

20

30

20

30

E28HK 5/8” 1/4” 5 20 3 30 30

Example : For E24HK

If the unit is installed at a 20 m distance, the quantity of additional refrigerant should be 300 g ...... (20 - 10) m x 30 g/m

= 300 g.

• This illustration is for explanation purposes only.

The indoor unit will actually face a different way.

33

11.3.

Indoor Unit

11.3.1.

HOW TO FIX INSTALLATION PLATE

The mounting wall is strong and solid enough to prevent it from the vibration.

11.3.2.

TO DRILL A HOLE IN THE WALL

AND INSTALL A SLEEVE OF

PIPING

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

3. Cut the sleeve until it extrudes about 15 mm from the wall.

Caution

When the wall is hollow, please be sure to use the sleeve for tube ass’y to prevent dangers caused by mice biting the connecting cable.

4. Finish by sealing the sleeve with putty or caulking compound at the final stage.

The centre of installation plate should be at more than 550 mm at right and left of the wall.

The distance from installation plate edge to ceiling should more than 67 mm.

From installation plate left edge to unit’s left side is 47 mm.

From installation plate right edge to unit’s right is 73 mm.

: For left side piping, piping connection for liquid should be about

126 mm from this line.

: For left side piping, piping connection for gas should be about

174 mm from this line.

: For left side piping, piping connection cable should be about

984 mm from this line.

1. Mount the installation plate on the wall with 5 screws or more.

(If mounting the unit on the concrete wall consider using anchor bolts.)

• Always mount the installation plate horizontally by aligning the marking-off line with the thread and using a level gauge.

2. Drill the piping plate hole with ø70 mm hole-core drill.

• Line according to the arrows marked on the lower left and right side of the installation plate. The meeting point of the extended line is the centre of the hole. Another method is by putting measuring tape at position as shown in the diagram above. The hole centre is obtained by measuring the distance namely 150 mm and 125 mm for left and right hole respectively.

• Drill the piping hole at either the right or the left and the hole should be slightly slanted to the outdoor side.

11.3.3.

INDOOR UNIT INSTALLATION

1. For the right rear piping

2. For the right and right bottom piping

34

3. For the embedded piping

35

(This can be used for left rear piping and left bottom piping also.)

36

11.3.4.

CONNECT THE CABLE TO THE

INDOOR UNIT

1. The inside and outside connecting cable can be connected without removing the front grille.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 u 1.5 mm

2 flexible cord, type designation 245 IEC 57 or heavier cord.

• Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively.

• Earth lead wire shall be longer than the other lead wires as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage.

• Secure the cable onto the control board with the holder

(clamper).

11.4. Outdoor Unit

11.4.1.

INSTALL THE OUTDOOR UNIT

• After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).

2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.

11.4.2.

CONNECTING THE PIPING

Connecting The Piping To Indoor Unit

Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe.

(in case of using long piping).

Connect the piping

• Align the center of piping and sufficiently tighten the flare nut with fingers.

• Further tighten the flare nut with torque wrench in specified torque as stated in the table.

Model

CAUTION

Do not over tighten, over tightening cause gas leakage.

Connecting The Piping To Outdoor Unit

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe.

Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.

E24HK, E28HK

Local pipes can project in any of four directions.

• Make holes in the pipe panels for the pipes to pass through.

• Be sure to install the pipe panels to prevent rain from getting inside the outdoor unit.

[Removing the service panel].

(1) Remove the two mounting screws.

(2) Slide the service panel downward to release the pawls.

After this, pull the service panel toward you to remove it.

E21HK

E24HK, E28HK

Piping size (Torque)

Gas Liquid

1/2” [55 N l m]

5/8” [65 N l m]

1/4” [18 N

1/4” [18 N l l m) m)

37

CUTTING AND FLARING THE PIPING

1. Please cut using pipe cutter and then remove the burrs.

2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.

Turn the piping end down to avoid the metal powder entering the pipe.

3. Please make flare after inserting the flare nut onto the copper pipes.

38

11.4.3.

EVACUATION OF THE EQUIPMENT

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure.

1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.

• Be sure to connect the end of the charging hose with the push pin to the service port.

2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.

3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to

-76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes.

Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.

6. Tighten the service port caps of the 3-way valve at a torque of 18 N l m with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

• Be sure to check for gas leakage.

CAUTION

• If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step above take the following measure:

• If the leak stops when the piping connections are tightened further, continue working from step .

• If the leak does not stop when the connections are retightened, repair the location of leak.

• Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause frostbite.

39

11.4.4.

CONNECT THE CABLE TO THE OUTDOOR UNIT

(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT)

1. Remove the control board cover from the unit by loosening the screw.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 u 1.5 mm

2

(E21HK) or

4 u 2.5 mm

2

(E24HK, E28HK) flexible cord, type designation 245 IEC 57 or heavier cord.

3. Secure the cable onto the control board with the holder (clamper).

4. Cable connection to the power supply through knife switch (Disconnecting means).

• Connect the approved polychloroprene sheathed power supply cable 3 u 2.5 mm

2

(E21HK) or 3 u 4.0 mm

2

(E24HK, E28HK), type designation 245 IEC 57 or heavier cord to the terminal board, and connect the other end of the cable to knife switch

(Disconnecting means).

5. Select required direction and apply protective bushing provided in accessories to protect cables from sharp edges. (E24HK,

E28HK)

6. Once all wiring work has been completed, tie the wires and cord together with the binding strap so that they do not touch other parts such as the compressor and pipes. (E24HK, E28HK)

Note: Knife switch (Disconnecting means) should have minimum 3.5 mm contact gap.

• Secure the cable onto the control board with the holder (clamper).

E21HK

E24HK, E28HK

40

12 Operation and Control

12.1. Basic Function

Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air temperature.

12.1.1.

Internal Setting Temperature

Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes.

These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.

12.1.2.

Cooling Operation

12.1.2.1. Thermostat control

• Compressor is OFF when Intake Air Temperature - Internal Setting Temperatue < -1.5

qC.

• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.

12.1.3.

Soft Dry Operation

12.1.3.1. Thermostat control

• Compressor is OFF when Intake Air Temperature - Internal Setting Temperatue < -1.5

qC.

• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.

12.1.4.

Heating Operation

12.1.4.1. Thermostat control

• Compressor is OFF when Intake Air Temperature - Internal Setting Temperatue > +2.0

qC.

• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature < Compressor OFF point.

41

12.1.5.

Automatic Operation

• This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake air temperature and outdoor air temperature.

• During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below chart.

Every 30 minutes, the indoor and outdoor temperature is judged. Based on remote control setting temperature, the value of T1 will increase up to 10 qC, T2 will decreased by 3qC and T3 will decreased up to 8qC.

The Auto Operation Mode shifting will take place whenever operation mode changed from Cooling/Soft Dry to Heating or vice versa.

12.1.6.

Indoor Fan Motor Operation

A. Basic Rotation Speed (rpm)

i. Manual Fan Speed

[Cooling, Dry]

• Fan motor’s number of rotation is determined according to remote control setting.

Remote Control

Tab (rpm)

O

Hi

O

Me+

O

Me

O

Me-

O

Lo

[Heating]

• Fan motor’s number of rotation is determined according to remote control setting.

Remote Control

Tab (rpm)

O

Shi

O

Me+

O

Me

O

Meii. Auto Fan Speed

[Cooling, Dry]

• According to room temperature and setting temperature, indoor fan speed is determined automatically.

• The indoor fan will operate according to pattern below.

O

Lo

42

[Heating]

• According to indoor pipe temperature, automatic heating fan speed is determined as follows.

B. Feedback control

• Immediately after the fan motor started, feedback control is performed once every second.

• During fan motor on, if fan motor feedback 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan motor error is detected.

Operation stops and cannot on back.

12.1.7.

Outdoor Fan Motor Operation

Outdoor fan motor is operated with one fan speed only. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

12.2. Airflow Direction

1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).

2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).

12.2.1.

Vertical Airflow

Heating

Soft Dry

Operation Mode

Cooling and e-ion

Manual

Auto

Manual

Auto

Manual

Airflow Direction

Auto with Heat Exchanger

Temperature

A

B

C

D

1

12

12

12

2

Vane Angle ( q)

3 4

0

25

45

0

0

37 49

18

18

10 ~ 32

25

10 ~ 32

25

31

5

60

37

31 37

43

1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below. When the air conditioner is stopped using remote control, the vane will shift to close position.

2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position.

12.2.2.

Horizontal Airflow

1. Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as

Figure 1 below.

Operation Mode

Heating, with heat exchanger temperature

Cooling and Soft Dry

A

B

Vane Angle ( q)

68 ~ 112

90

68 ~ 112

2. Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as Figure 2 above.

1 2 3 4 5 Pattern

Airflow Direction

Patterns at Remote

Control

Vane Angle ( q) 90 65 78 102 115

12.3. Quiet operation (Cooling Mode/Cooling area of Soft Dry Mode)

A. Purpose

To provide quiet cooling operation compare to normal operation.

B. Control condition

a. Quiet operation start condition

• When “quiet” button at remote control is pressed.

Quiet LED illuminates.

b. Quiet operation stop condition

44

1. When one of the following conditions is satisfied, quiet operation stops: a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. Quiet button is pressed again.

2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.

3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.

4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.

5. During quiet operation, if timer “on” activates, quiet operation maintains.

6. After off, when on back, quiet operation is not memorised.

C. Control contents

1. Auto fan speed is changed from normal setting to quiet setting of respective fan speed.

This is to reduce sound of Hi, Me, Lo for 3dB.

2. Manual fan speed for quiet operation is 1 step from setting fan speed.

3. Outdoor fan speed is changed to Q-Lo

4. Compressor frequency reduced.

12.3.1.

Quiet operation (Heating)

A. Purpose

To provide quiet heating operation compare to normal operation.

B. Control condition

a. Quiet operation start condition

• When “quiet” button at remote control is pressed.

Quiet LED illuminates.

b. Quiet operation stop condition

1. When one of the following conditions is satisfied, quiet operation stops: a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. Quiet button is pressed again.

2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.

3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.

4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.

5. During quiet operation, if timer “on” activates, quiet operation maintains.

6. After off, when on back, quiet operation is not memorised.

C. Control contents

a. Fan Speed Auto

• Indoor FM RPM depends on pipe temperature sensor of indoor heat exchanger.

Auto fan speed is changed from normal setting to quiet setting of respective fan speed.

This is to reduce sound of Hi, Me, Lo for 3dB.

b. Fan Speed Manual

• Manual fan speed for quiet operation is - 1 step from setting fan speed.

c. Compressor frequency reduced.

12.4. Powerful Mode Operation

When the powerful mode is selected, the internal setting temperature will shift higher up to 3.5

qC (for Heating) or lower up to 2qC

(for Coolong/Soft Dry) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.

45

12.5. ON Timer Control

ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time.

60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.

From the above judgment, the decided operation will start operate earlier than the set time as shown below.

12.6. OFF Timer Control

OFF timer can be set using remote control, the unit with timer set will stop operate at set time.

12.7. Auto Restart Control

1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.

2. This type of control is not applicable during ON/OFF Timer setting.

12.8. Indication Panel

LED

Color

Light ON

Light OFF

POWER

Green

Operation ON

Operation OFF

TIMER

Orange

Quiet Setting ON

QUIET

Orange

Quiet Mode ON

POWERFUL

Orange

Powerful Mode ON

Quiet Setting OFF Quiet Mode OFF Powerful Mode OFF e-ion

Blue e-ion ON e-ion OFF

PATROL SENSOR

Blue

PATROL ON

PATROL OFF

Note:

• If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation mode judgment, or

ON timer sampling.

• If Timer LED is blinking, there is an abnormality operation occurs.

• If e-ion LED is blinking, there is an abnormality of e-ion occurs.

• If PATROL LED is blinking, there is a gas sensor error detection.

46

12.9. Patrol Operation

A. Purpose

To monitor air dirtiness level by using gas sensor and activates e-ion operation whenever air is dirty.

B. Control Condition

a. Patrol operation start condition

• When the unit operation is started with “OFF/ON” button.

• When the unit stops, “Patrol” button is pressed, Patrol individual operation will start.

• During cooling only operation, “Patrol” button is pressed.

b. Patrol operation stop condition

When any of the following condition is fulfilled:

• When “OFF/ON” button is pressed.

• During any operation with Patrol, “Patrol” button is pressed again.

• When “e-ion” button is pressed.

• When OFF Timer activates.

c. Patrol operation disable

• To disable the Patrol Operation during unit start (default) with “OFF/ON” button, press “Patrol” button and hold for 5 seconds, then release.

• To disable the Patrol Operation, press “Patrol” button and hold for 15 seconds, then release.

47

C. Control Content

a. Gas Sensor Control

• First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is monitored.

The Air Dirtiness level is set to level 2.

• After that, gas sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air.

• The air dirtiness level is monitored by comparing the current resistance value with maximum resistance value from time to time to get the Air Dirtiness Value.

• There are 3 air dirtiness levels, based on the Air Dirtiness Value:

- Air Dirtiness level 0: Clean

- Air Dirtiness level 1: Moderate

- Air Dirtiness level 2: Contaminated

• Dirtiness level sensitivity adjustment

It is possible to change the gas sensor sensitivity, where the Threshold value (G1 ~ G4) will be shifted accordingly:

1. Press and release “SET” buttton.

2. Press “Timer increment” / “Timer decrement” button to select sensitivity. (Low Standard (Default) High)

3. Confirm setting by pressing “Timer Set” button. LCD returned to original display after 2 seconds.

4. LCD returned to original display if remote control does not operate for 30 seconds.

b. e-ion Control

• When dirtiness level is 1 or 2, e-ion operation starts.

• If dirtiness level improves from level 2 to level 1, the unit carries out level change after 60 seconds.

• When dirtiness level returns to level 0 continuously for 10 minutes or more, e-ion operation stops.

Dirtiness Level Shift

• For Auto Fan Speed, the fan speed increased based on dirtiness level: c. Indoor Fan Control

• During any operation mode combines with Patrol operation, fan speed follows respective operation mode.

• During Patrol individual operation if e-ion starts, only Auto Fan Speed and no Powerful operation is allowed. Even if “Fan

Speed” button is pressed, no signal is sent to air conditioner, and no change on LCD display.

• During Patrol individual operation if e-ion stops, Indoor Fan stop operation.

d. Airflow direction (Horizontal, Vertical) Control

• During any operation mode combines with Patrol operation, airflow direction follows respective operation mode.

• During Patrol individual operation if e-ion starts, only Auto Air Swing is allowed. Even if “Air Swing” button is pressed, no signal is sent to air conditioner, and no change on LCD display.

• During Patrol individual operation if e-ion stops, Airflow direction louver closed.

e. Indicator

• When Patrol operation starts, Patrol Sensor indicator ON.

• When e-ion operation starts based on dirtiness level, e-ion indicator ON.

48

f. Remote Control Receiving Sound

• Normal Operation

• Patrol Mode

• Patrol Mode

• Stop o o o o

Patrol Mode

Stop

Normal Operation

Patrol :

:

:

:

Beep

Long Beep

Beep

Beep g. Timer Control

• When ON timer activates when unit stops, previous operation resumes without Patrol operation.

• When ON timer activates during any operation, no change and carry on current operation.

• When OFF timer activates during any operation, all operation stops.

h. Power failure

• During Patrol individual operation, if power failure occurs, after power resumes, Patrol individual operation resumes immediately.

• During combination operation, if power failure occurs, after power resumes combination operation resume immediately.

12.10. e-ion Operation

A. Purpose

This operation provides clean air by producing negative ions to attract dust captured at the positively charged e-ion filters.

B. Control Condition

a. e-ion operation start condition

• During unit running at any operation mode, if “e-ion” button is pressed, combination operation (operation mode + e-ion operation) starts.

• During unit is OFF, if “e-ion” button is pressed, e-ion individual operation starts.

b. e-ion operation stop condition

• When “OFF/ON” button is pressed to stop the operation.

• When “e-ion” button is pressed again.

• When “Patrol” button is pressed.

• When OFF Timer activates.

c. e-ion operation pause condition

• When indoor fan stop (during deice, odor cut control, thermostat off, etc.). e-ion operation resume after indoor fan restarts.

• When indoor intake temperature 40 qC. e-ion operation resume after indoor intake temperature < 40qC continuously for 30 minutes.

49

C. Control Content

a. Indoor fan control

• During any operation mode combines with e-ion operation, fan speed follows respective operation mode.

• During e-ion individual operation - only Auto Fan Speed and no Powerful operation is allowed. Even if Fan Speed button is pressed, no signal is sent to air conditioner, and no change on LCD display.

Auto Fan Speed for e-ion operation switches between HLo and CLo at pattern below: b. Airflow direction control

• During any operation mode combines with e-ion operation, airflow direction follows respective operation mode.

• During e-ion individual operation, only Auto Air Swing is allowed. Even if Air Swing button is pressed, no signal is sent to air conditioner, and no change on LCD display.

c. Timer control

• When ON timer activates when unit stops, previous operation resumes without e-ion operation.

• When ON timer activates during any operation, no change and carry on current operation.

• When OFF timer activates during any operation, all operation stops.

d. Indicator

• When e-ion operation starts, e-ion indicator ON.

e. e-ion Check Mode

• To check if e-ion is malfunctioning, during e-ion operation press “e-ion” button for 15 seconds and release to enter e-ion Check

Mode and supplies power to the e-ion Air Purifying System.

• If abnormal discharge is detected at filter (short-circuited) due to water or dust adhesion, etc., the e-ion indicator blinks immediately.

f. Power failure

• During e-ion individual operation, if power failure occurs, after power resumes, e-ion individual operation resumes immediately.

• During combination operation, if power failure occurs, after power resumes, combination operation resume immediately.

g. Error Detection Control

When e-ion indicator blink, it indicates error listed below: i. e-ion Air Purifying system main connector to PCB is open:

Judgement Method

• During e-ion operation (include during Patrol operation), e-ion Air Purifying system main connector to PCB is opened.

Troubleshooting Methods

• Connect the connector or stop operation (include during Patrol operation) to cancel the blinking.

ii. Abnormal Discharge

Judgement Method

• During e-ion operation, when feedback voltage is -Lo (at microcontroller) is detected, it is judged abnormal discharge and stops power supplies to the e-ion Air Purifying system.

• The unit retries after 30 minutes and repeat for 24 times. (not applicable for e-ion Check Mode)

Troubleshooting Method

• Press “e-ion” button or “OFF/ON” button to stop the operation and check the e-ion Air Purifying system main connector to

PCB.

• After that, press “e-ion” button again to confirm the e-ion indicator not blinking.

• The 24 times counter will be clear after 10 minutes of normal operation or when operation stops.

50

Error Reset Method

• Press “OFF/ON” button to OFF the operation.

• Press AUTO OFF/ON button at indoor unit to OFF the operation.

• OFF Timer activates.

• Press “e-ion” button during e-ion individual mode.

• Power supply reset.

iii. e-ion breakdown

Judgement Method

• When hi-feedback voltage (at microcontroller) supplied to filter during e-ion stop, due to PCB or filter’s high voltage power supply damage.

• Operations except e-ion continue. Both Timer indicator and e-ion indicator blink.

Troubleshooting Method

• Press “e-ion” button or “OFF/ON” button to stop the operation.

• Change main circuit board or filter’s high voltage power supply.

• When lo-feedback voltage supplied to e-ion Air Purifying system during e-ion operation, e-ion indicator and Timer indicator stop blinking.

51

13 Protection Control

13.1. Protection Control For All Operations

13.1.1.

Time Delay Safety Control

1. The compressor will not start for three minutes after stop of operation.

2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition.

13.1.2.

30 Seconds Forced Operation

1. Once the compressor starts operation, it will not stop its operation for 30 seconds.

2. However, it can be stopped using remote control or Auto Switch at indoor unit.

13.1.3.

Total Running Current Control

1. When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased.

2. If the running current does not exceed X value for five seconds, the frequency instructed will be increased.

3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.

Operation Mode

Cooling/Soft Dry (A)

Cooling/Soft Dry (B)

Cooling/Soft Dry (C)

Heating

X (A)

11.0

9.6

11.5

E21HK

Y (A)

15.0

15.0

17.0

4. The first 30 minutes of cooling operation, (A) will be applied.

X (A)

14.0

12.0

14.0

12.8

E24HK

Y (A)

20.0

20.0

20.0

20.0

X (A)

14.9

14.6

14.9

16.2

E28HK

Y (A)

20.0

20.0

20.0

20.0

13.1.4.

IPM (Power transistor) Prevention Control

A. Overheating Prevention Control

1. When the IPM temperature rises to 110 qC, compressor operation will stop immediately.

2. Compressor operation restarts after three minutes the temperature decreases to 95 qC.

B. DC Peak Current Control

1. When electric current to IPM exceeds set value of 30.0 ± 5.0 A, the compressor will stop operate. Then, operation will restart after three minutes.

2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after two minutes.

3. If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after one minute. If this condition repeats continuously for seven times, all indoor and outdoor relays will be cut off.

52

13.1.5.

Compressor Overheating Prevention Control

Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below figure.

If compressor discharge temperature exceeds 112 qC, compressor will be stop, occurs 4 times per 20 minutes, timer LED will be blinking (“F97” is to be confirmed).

13.2. Protection Control For Cooling & Soft Dry Operation

13.2.1.

Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.

This control will begin 1 minute after the compressor starts.

Compressor frequency will adjust base on Outdoor Air Temperature.

53

13.2.2.

Cooling Overload Control

i. Pipe temperature limitation/restriction

• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)

• The compressor stop if outdoor pipe temperature exceeds 63 qC.

• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)

13.2.3.

Dew Prevention Control 1

1. To prevent dew formation at indoor unit discharge area.

2. This control activated if:

• Outdoor air temperature and Indoor pipe temperature judgment by microcontroller if fulfilled.

• When Cooling or Dry mode is operated more than 20 minutes or more.

3. This control stopped if:

• Compressor stopped.

• Remote control setting changed. (fan speed / temperature)

• Outdoor air temperature and indoor intake temperature changed.

4. Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.

• Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.

• The angle of horizontal louver will be changed as table below:

Operation Mode Airflow Direction

Cooling and e-ion Auto

Manual

1

22

2

Vane Angle ( q)

3 4

22 ~ 30

24 26 28

5

30

13.2.4.

Dew Prevention Control 2

1. To prevent dew formation at indoor unit discharge area.

2. This control starts if all conditions continue for 20 minutes:

• Operated with Cooling or Soft Dry Mode.

• Indoor intake temperature is between 25 qC and 29qC.

• Outdoor air temperature is less than 30 qC.

• Quiet Lo fan speed.

3. This control stopped if:

• When receive air swing change signal from Remote Control.

4. The horizontal louver will be fixed at 24 q (regardless of Auto or Manual Airflow Direction Setting)

13.2.5.

Freeze Prevention Control

1. When indoor heat exchanger temperature is lower than 0 qC continuously for six minutes, compressor will stop operating.

2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 13 qC.

3. At the same time, indoor fan speed will be higher than during its normal operation.

4. If indoor heat exchanger temperature is higher than 13 qC for five minutes, the fan speed will return to its normal operation.

54

13.3. Protection Control For Heating Operation

13.3.1.

Intake Air Temperature Control

Compressor will operate at maximum frequency if below conditions occur:

1. When the indoor intake air temperature is 30 qC or above.

13.3.2.

Outdoor Air Temperature Control

The maximum current value is regulated when the outdoor air temperature rises above 14 qC in order to avoid compressor overloading.

13.3.3.

Overload Protection Control

The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures.

13.3.4.

Cold Draught Operation

When indoor pipe temperature is low, cold draught operation start where indoor fan speed will be reduced.

13.3.5.

Device Operation

When outdoor pipe temperature and another outdoor temperature is low, device operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks.

13.3.6.

Low Temperature Compressor Oil Return Control (E21HK)

In heating operation, if the outdoor temperature falls below -10 qC when compressor start, the compressor frequency will be regulated up to 600 seconds.

55

14 Servicing Mode

14.1. Auto OFF/ON Button

1. AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.

2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)

The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A “beep” sound will occur at the fifth seconds, in order to identify the starting of Test Run operation (Forced cooling operation). Within 5 minutes after Forced cooling operation start, the Auto OFF/ON button is pressed for more than 5 seconds. A 2 “beep” sounds will occur at the fifth seconds, in order to identify the starting of Forced heating operation.

The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air conditioner operation.

3. REMOTE CONTROL NUMBER SWITCH MODE

The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than

11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition) and press any button at remote control to transmit and store the desired transmission code to the EEPROM.

For transmission code selection explanation, please refer to “Select Remote Control Transmission Code”.

4. REMOTE CONTROL RECEIVING SOUND OFF/ON MODE

The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On

Mode is in standby condition) and press “AC Reset” button and then press “Check” button at remote control.

Press “Auto OFF/ON button” to toggle remote control receiving sound.

- Short “beep”: Turn OFF remote control receiving sound.

- Long “beep”: Turn ON remote control receiving sound.

After Auto OFF/ON Button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON Mode is restarted.

14.2. Select Remote Control Transmission Code

• There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit will only operate when received signal with same transmission code from remote control. This could prevent signal interference when there are 2 or more indoor units installed nearby together.

• To change remote control transmission code, short or open jumpers at the remote control printed circuit board.

56

Remote Control Printed Circuit Board

Jumper A (J-A) Jumper B (J-B) Remote Control No.

Short

Open

Open

Open

A (Default)

B

Short

Open

Short

Short

C

D

14.3. Remote Control Button

14.3.1.

SET BUTTON

• To check current remote control transmission code

- Press for more than 10 seconds.

• To change the air quality sensor sensitivity

- Press and release with pointer.

- Press the Timer Decrement button to select sensitivity:

1. Low Sensitivity

2. Standard (Default)

3. Hi Sensitivity

- Confirm setting by pressing Timer Set button, a “Beep” sound will be heard. LCD returns to original display after 2 seconds.

- LCD returns to original display if remote control does not operate for 30 seconds.

14.3.2.

CLOCK BUTTON

• To change the remote control’s time format

- Press for more than 5 seconds.

14.3.3.

RESET (RC)

• To clear and restore the remote control setting to factory default

- Press once to clear the memory.

14.3.4.

RESET (AC)

• To restore the unit’s setting to factory default

- Press once to restore the unit’s setting.

14.3.5.

TIMER

• To change indoor unit indicator’s LED intensity

- Press continuously for 5 seconds.

14.3.6.

TIMER

• To change remote control display from Degree Celsius to Degree Fahrenheit.

- Press continuously for 10 seconds.

57

15 Troubleshooting Guide

15.1. Refrigeration Cycle System

In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle.

Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.

The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table on the right.

58

15.2. Relationship Between The Condition Of The Air Conditioner And

Pressure And Electric Current

Condition of the air conditoner Low Pressure

Cooling Mode

High Pressure Electric current during operation

Low Pressure

Heating Mode

High Pressure Electric current during operation

Insufficient refrigerant

(gas leakage)

Clogged capillary tube or

Strainer

Short circuit in the indoor unit

Heat radiation deficiency of the outdoor unit

Inefficient compression

• Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.

59

15.3. Breakdown Self Diagnosis Function

15.3.1.

Self Diagnosis Function (Three Digits Alphanumeric Code)

• Once abnormality has occurred during operation, the unit will stop its operation, and Timer LEDs blink.

• Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the

LED will light up again.

• In operation after breakdown repair, the Timer LED will no more blink. The last error code (abnormality) will be stored in

IC memory.

To make a diagnosis

1. Timer LED start to blink and the unit automatically stops the operation.

2. Press the CHECK button on the remote controller continuously for 5 seconds.

3. “- -” will be displayed on the remote controller display.

Note: Display only for “- -”. (No transmitting signal, no receiving sound and no Power LED blinking.) seconds or operating the unit for 30 seconds.

8. The same diagnosis can be repeated by turning power on again.

4. Press the “TIMER” or button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will be transmitted to the main unit.

5. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main unit.

6. When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED will light up for 0.5 seconds and no sound will be heard.

7. The breakdown diagnosis mode will be canceled by pressing the CHECK button continuously for 5 seconds or without any operation the remote control for 30 seconds.

8. The LED will be off if the unit is turned off or the AC button on the main unit is pressed.

To display memorized error (Protective operation)

status:

1. Turn power on.

2. Press the CHECK button on the remote controller continuously for 5 seconds.

3. “- -” will be displayed on the remote controller display.

Note: Display only for “- -”. (No transmitting signal, no receiving sound and no Power LED blinking.)

To clear memorized error (Protective operation) status

after repair:

1. Turn power on.

2. Press the AUTO button for 5 seconds (A beep receiving sound) on the main unit to operate the unit at Forced Cooling Operation mode.

3. Press the CHECK button on the remote controller for about 1 second with a pointed object to transmit signal to main unit. A beep sound is heard from main unit and the data is cleared.

Temporary Operation (Depending on breakdown status)

1. Press the AUTO button (A beep receiving sound) on the main unit to operate the unit. (Remote control will become possible.)

2. The unit can temporarily be used until repaired.

Error Code

H23

H27, H28

Operation Temporary items

Cooling

Cooling, Heating

Emergency Operation with limited power

4. Press the “TIMER” or button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will be transmitted to the main unit. The power LED lights up. If no abnormality is stored in the memory, three beeps sound will be heard.

5. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main unit.

6. When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED will light up for 0.5 seconds and no sound will be heard.

7. The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5

60

15.4. Error Codes Table

Diagnosis display

Abnormality / Protection control

Abnormality

Judgement

Emergency operation

Primary location to verify

H00

H11

H12

H14

H15

H16

H19

H23

H25

No abnormality detected

Indoor / outdoor abnormal communication

Connection capability rank abnormal

Indoor intake air temperature sensor abnormality

Outdoor compressor temperature sensor abnormality

Outdoor Current Transformer open circuit

Indoor fan motor merchanism lock

Indoor heat exchanger temperature sensor abnormality

E-Ion breakdown

> 1 min after starting operation

Continue for 5 sec.

Normal operation

Indoor fan operation only

Continue for 5 sec.

Continue for 5 sec.

Continue for 5 sec.

Continue for 5 sec.

O

(Cooling only)

O

O

• Internal / external cable connections

• Indoor / Outdoor PCB

• Intake air temperature sensor

(defective or disconnected)

• Compressor temperature sensor

(defective or disconnected)

• Outdoor PCB

• IPM (Power transistor) module

• Indoor PCB

• Fan motor

• Heat exchanger temperature sensor

(defective or disconnected)

• Indoor PCB

• E-Ion PCB

• Outdoor temperature sensor (defective or disconnected)

• Outdoor heat exchanger temperature sensor (defective or disconnected)

H27

H28

H30

H33

H38

H58

H97

H98

H99

F11

F90

F91

F93

F95

F96

F97

F98

F99

Outdoor air temperature sensor abnormality

Outdoor heat exchanger temperature sensor abnormality

Discharge temperature sensor abnormality

Indoor/Outdoor wrong connection

Indoor/Outdoor mismatch

Abnormal gas sensor

Outdoor Fan Motor lock abnormality

Indoor high pressure protection

Outdoor compressor overheating protection

Total running current protection

Outdoor Direct Current (DC) peak detection

Continue for 6 hours

Indoor heat exchanger anti-freezing protection

Cooling / Heating cycle changeover abnormality

PFC control

4 times occurance within 30 minutes

4 times occurance within 10 minutes

Refrigeration cycle abnormality 7 times occurance continuously

Outdoor compressor abnormal revolution 4 times occurance within 20 minutes

Cool high pressure protection 4 times occurance within 20 minutes

IPM (power transistor) overheating protection

4 times occurance within 20 minutes

3 times occurance within 20 minutes

7 times occurance continuously

• Indoor/Outdoor supply voltage

• Gas sensor

(defective or disconnected)

• Outdoor PCB

• Outdoor Fan Motor

• Air filter dirty

• Air circulation short circuit

• Insufficient refrigerant

• Air filter dirty

• 4-way valve

• V-coil

• Voltage at PFC

• No refrigerant

(3-way valve is closed)

• Outdoor compressor

• Outdoor refrigerant circuit

• Excess refrigerant

• Improper heat radiation

• IPM (Power transistor)

• Insufficient refrigerant

• Compressor

• Excess refrigerant

• Improper heat radiation

• Outdoor PCB

• IPM (Power transistor)

• Compressor

Note:

“O” - Frequency measured and fan speed fixed.

The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep” sound heard following by pressing the “CHECK” button at Remote Control.

Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error

Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is changed from one “beep” to four “beep” sounds.

61

16 Disassembly and Assembly Instructions

WARNING

High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks.

16.1. Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor

Removal Procedures

16.1.1.

To remove front grille

16.1.2.

To remove power electronic controller

62

63

16.1.3.

To remove discharge grille

16.1.4.

To remove control board

64

16.1.5.

To remove cross flow fan and indoor fan motor

65

66

17 Technical Data

17.1. Operation Characteristics

17.1.1.

CS-E21HKES CU-E21HKE

67

68

69

70

17.1.2.

CS-E24HKES CU-E24HKE

Cooling Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature: 27/19 qC

Remote control setting: HI FAN, COOL 16 qC

Compressor frequency: Rated cooling

Voltage: 220/230 V

71

Heating Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature : 20/qC

Remote control setting : HI FAN, HEAT 30 qC

Compressor frequency : Rated heating

Voltage : 220/230 V

72

Cooling Characteristic at Different Piping Length

Condition

Indoor room temperature : 27/19 qC, 35/-qC

Remote control setting : HI FAN, COOL 16 qC

Compressor frequency : Rated cooling

Voltage : 220/230 V

73

Heating Characteristic at Different Piping Length

Condition

Indoor room temperature: 20/qC, 7/6qC

Remote control setting: HI FAN, HEAT 30 qC

Compressor frequency: Rated heating

Voltage: 220/230 V

74

17.1.3.

CS-E28HKE CU-E28HKE

Cooling Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature: 27/19 qC

Remote control setting: HI FAN, COOL 16 qC

Compressor frequency: Rated cooling

Voltage: 220/230 V

75

Heating Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature : 20/qC

Remote control setting : HI FAN, HEAT 30 qC

Compressor frequency : Rated heating

Voltage : 220/230 V

76

Cooling Characteristic at Different Piping Length

Condition

Indoor room temperature : 27/19 qC, 35/-qC

Remote control setting : HI FAN, COOL 16 qC

Compressor frequency : Rated cooling

Voltage : 220/230 V

77

Heating Characteristic at Different Piping Length

Condition

Indoor room temperature: 20/qC, 7/6qC

Remote control setting: HI FAN, HEAT 30 qC

Compressor frequency: Rated heating

Voltage: 220/230 V

78

17.2. Sensible Capacity Chart

CS-E21HKES CU-E21HKE

Indoor wet bulb temp.

17.0

qC

19.0

qC

19.5

qC

22.0

qC

TC

6.25

6.86

7.48

CS-E24HKES CU-E24HKE

30

SHC

4.74

4.96

5.14

IP

2.02

2.06

2.10

TC

5.84

6.30

6.41

6.99

35

SHC

4.54

4.77

4.95

Outdoor Temp. ( qC)

IP

2.18

2.21

2.22

2.26

TC

5.43

5.97

6.50

40

SHC

4.37

4.59

4.77

Indoor wet bulb temp.

17.0

qC

19.0

qC

19.5

qC

22.0

qC

TC

6.75

7.41

8.07

CS-E28HKE CU-E28HKE

30

SHC

5.11

5.35

5.55

IP

1.94

1.98

2.01

TC

6.30

6.80

6.92

7.54

35

SHC

4.90

5.14

5.34

Outdoor Temp. ( qC)

IP

2.09

2.12

2.13

2.17

TC

5.86

6.44

7.02

40

SHC

4.71

4.95

5.15

Indoor wet bulb temp.

17.0

qC

19.0

qC

19.5

qC

22.0

qC

TC

7.59

8.33

9.08

30

SHC

5.75

6.02

6.25

IP

2.33

2.37

2.41

TC

7.09

7.65

7.79

8.48

35

SHC

5.52

5.79

6.01

Outdoor Temp. ( qC)

IP

2.50

2.54

2.55

2.60

TC

6.59

7.24

7.89

40

SHC

5.30

5.57

5.79

IP

2.33

2.37

2.42

IP

2.23

2.28

2.32

IP

2.68

2.73

2.78

TC

4.94

5.42

5.91

46

SHC

4.15

4.37

4.55

IP

2.51

2.56

2.61

TC

5.33

5.85

6.38

46

SHC

4.48

4.71

4.91

IP

2.41

2.45

2.50

TC

6.00

6.59

7.18

46

SHC

5.04

5.30

5.53

IP

2.89

2.94

2.99

TC - Total Cooling Capacity (kW)

SHC - Sensible Heat Capacity (kW)

IP - Input Power (kW)

Indoor 27 qC/19qC

Outdoor 35 qC/24qC

79

18 Exploded View and Replacement Parts List

18.1. CS-E21HKES CS-E24HKES CS-E28HKE

Note:

The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

80

<Model: CS-E21HKES, CS-E24HKES, CS-E28HKE>

42

43

51

52

38

39

40

41

53

54

55

33

34

36

37

29

30

31

32

REF NO.

1

2

PART NAME & DESCRIPTION

CHASSY COMPLETE

FAN MOTOR

5

6

7

3

4

CROSS FLOW FAN COMPLETE

SCREW - CROSS FLOW FAN

BEARING ASS’Y

EVAPORATOR

FLARE NUT (1/4”)

19

20

21

23

15

16

17

18

24

25

26

27

28

10

11

8

9

FLARE NU (1/2”) (5/8”)

HOLDER SENSOR

DISCHARGE GRILLE COMPLETE

VERTICAL VANE

12

13

CONNECTING BAR

AIR SWING MOTOR

13a LEAD WIRE - AIR SWING MOTOR

14 AIR SWING MOTOR

LEAD WIRE - AIR SWING MOTOR

HORIZONTAL VANE

HORIZONTAL VANE

CAP - DRAIN TRAY

BACK COVER CHASSIS

CONTROL BOARD CASING

TERMINAL BOARD COMPLETE

ELECTRONIC CONTROLLER - MAIN

INDICATOR COMPLETE

INDICATOR HOLDER

INDICATOR HOLDER

SENSOR COMPLETE

CONTROL BOARD TOP COVER

CONTROL BOARD FRONT COVER

REMOTE CONTROL COMPLETE

FRONT GRILLE COMPLETE

INTAKE GRILLE COMPLETE

GRILLE DOOR

E-ION FILTER

SCREW - FRONT GRILLE

CAP - FRONT GRILLE

DRAIN HOSE

BAG COMPLETE - INSTALLATION SCREW

INSTALLATION PLATE

FULCRUM

E-ION AIR PURIFYING SYSTEM

ION-GENERATOR

ELECTRONIC CONTROLLER - POWER

OPERATING INSTRUCTION

OPERATING INSTRUCTION

INSTALLATION INSTRUCTION

INSTALLATION INSTRUCTION

CS-E21HKES

CWD50C1520

ARW61G8P30AC

CWH02C1010

CWH551146

CWH64K007

CWB30C1533

CWT251030

CWT251032

CWH32143

CWE20C2685

CWE241088

CWE261025

CWA98260+MJ

CWA67C3849

CWA98K1008

CWA67C4445

CWE241228

CWE241229

CWH521096

CWD932162B

CWH102334

CWA28C2305

CWA73C3107

CWE39C1174

CWD932817

CWD932818

CWA50C2122

CWH131209

CWH131210

CWA75C3175

CWE11C3898

CWE22C1423

CWE141076

CWD00K1005

XTT4+16CFJ

CWH521062A

CWH851063

CWH82C067

CWH36K1007

CWH621073

CWH14C5600

CWH94C0014

CWA744758

CWF565865

CWF613370

CWF613371

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

16

QTY.

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

3

3

1

2

1

1

1

1 m m m m m m m m m m m m m m m m m m

CWA744805 m

CWF565866

CWF613372

CS-E24HKES m

ARW51H8P30AC m m m

CWB30C1678 m

CWT251033 m m m m m m m m m m m m m m

CWA73C3108 m

CWF613373 m m m m m m m m m m m m m m m m m m m m m m m

CS-E28HKE m m m m m m m m m m m m m m m m m m m m m m

CWA73C3109 m

REMARKS

O

O

O

O

O

O

O

O

O

O

O

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).

• “O” marked parts are recommended to be kept in stock.

81

18.2. CU-E21HKE

Note:

The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

82

<Model: CU-E21HKE>

49

56

57

58

59

64

65

42

43

44

45

46

47

48

33

34

35

37

38

40

41

26

27

28

29

30

31

32

18

19

20

22

23

24

25

9

10

11

12

14

15

16

REF. NO.

1 CHASSY ASS’Y

2

3

DESCRIPTION & NAME

ANTI-VIBRATION BUSHING

COMPRESSOR

6

7

8

4

5

NUT-COMPRESSOR MOUNT

SOUND PROOF MATERIAL

FAN MOTOR BRACKET

FAN MOTOR

SCREW - FAN MOTOR BRACKET

SCREW - FAN MOTOR MOUNT

PROPELLER FAN ASSY

NUT - PROPELLER FAN

CONDENSER COMPLETE

TUBE ASS’Y (EXP. VALVE)

4 WAYS VALVE

STRAINER

HOLDER - COUPLING

3 WAYS VALVE (GAS)

2 WAYS VALVE (LIQUID)

SOUND PROOF BOARD

TERMINAL COVER

NUT-TERMINAL COVER

SENSOR COMPLETE (COMP. TOP)

HOLDER SENSOR

V-COIL COMPLETE (4-WAYS VALVE)

V-COIL COMPLETE (EXPAND VALVE)

SENSOR COMPLETE (COMP. DISC.)

SENSOR COMPLETE

REACTOR

CONTROL BOARD CASING (SIDE)

TERMINAL BOARD ASSY

FUSE HOLDERS

FUSE

CONTROL BOARD CASING (BOTTOM)

ELECTRONIC CONTROLLER - MAIN

CONTROL BOARD COVER (TOP)

CABINET SIDE PLATE (LEFT)

HANDLE

CABINET SIDE PLATE (RIGHT)

HANDLE

CABINET FRONT PLATE CO.

WIRE NET

CABINET TOP PLATE

CONTROL BOARD COVER (BOTTOM)

CONTROL BOARD COVER (TOP)

DRAIN HOSE

PACKING

SOUND PROOF MATERIAL

SOUND PROOF MATERIAL

OIL SEPARATOR ASS’Y

TUBE ASS’Y (CAP. TUBE)

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).

• “O” marked parts are recommended to be kept in stock.

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

1

1

1

1

2

3

1

QTY.

1

3

1

CWH32074

CWA43C2168J

CWA43C2058J

CWA50C2180

CWA50C2181

CWA421069

CWH102273

CWA28K1110J

K3GB1PH00016

K5D303BBA002

CWH102282

CWA73C3143R

CWH131167

CWE041255A

CWE161010

CWE041158A

CWE16000E

CWE06K1043

CWD041041A

CWE031031A

CWH131168

CWH131169A

CWH5850080

CWB81012

CWG302270

CWG302300

CWB16K1008

CWT022997

CU-E21HKE

CWD50K2085

CWH50077

5CS130XAD04

CWH56000J

CWG302302

CWD541054

CWA981166J

CWH551060J

CWH551106J

CWH03K1016

CWH56053J

CWB32C2453

CWT023679

CWB001026J

CWB11094

CWH351056

CWB011361

CWB021292

CWH151050

CWH171039A

CWH7080300J

CWA50C2185

REMARKS

O

O

O

O

O

O

83

18.3. CU-E24HKE CU-E28HKE

84

85

Note:

The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

86

<Model: CU-E24HKE, CU-E28HKE>

71

72

74

76

66

67

68

70

77

78

79

58

59

60

61

54a

55

56

57

49

50

50a

54

38

44

46

48

31

32

33

34

26

27

28

29

22

23

24

25

11

12

20

21

REF. NO.

1

2

3

4

4a

6

8

10

DESCRIPTION & NAME

BASE PAN ASS’Y

COMPRESSOR DC 280V

BUSHING-COMPRESSOR MOUNT

NUT FOR COMP. MOUNT.

PACKING

CONDENSER COMPLETE

DISCHARGE MUFFLER

3-WAYS VALVE (GAS)

4-WAYS VALVE

2-WAYS VALVE (LIQUID)

SOUND PROOF MATERIAL-COMP.

SOUND PROOF MATERIAL

SOUNDPROOF BOARD

V-COIL COMPLETE

V-COIL COMPLETE FOR EXP. VALVE

SENSOR COMPLETE

SENSOR-COMP.DISCHARGE

SENSOR CO (COMP.TOP)

CABINET REAR PLATE CO.

CONTROL BOARD ASS’Y

TERMINAL BOARD ASS’Y

TERMINAL BOARD ASS’Y

CAPACITOR-FAN MOTOR (3.5

PF / 440V)

ELECTRONIC CONTROLLER (HARMONIC DC)

ELECTRONIC CONTROLLER (NOISE FILTER)

ELECTRONIC CONTROLLER (MAIN)

REACTOR

TERMINAL COVER

NUT FOR TERMINAL COVER

BRACKET FAN MOTOR

SCREW - BRACKET FAN MOTOR

FAN MOTOR

SCREW-FAN MOTOR BRACKET

PROPELLER FAN

NUT - PROPELLER FAN

CABINET FRONT PLATE

DISCHARGE GRILLE

CABINET SIDE PLATE

WIRE NET

CABINET TOP PLATE CO.

CABINET FRONT PLATE CO.

HANDLE

TUBE ASS’Y (CAPILLARY TUBE)

EXPANSION VALVE

DRAIN HOSE

PACKING - L. TUBE

BAG-COMPLETE (DRAIN ELBOW)

PIPE COVER (FRONT)

PIPE COVER (BACK)

STRAINER

RECEIVER

1

1

1

1

1

1

1

3

1

2

1

1

1

1

1

1

1

4

1

2

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

3

QTY.

1

1

3

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).

• “O” marked parts are recommended to be kept in stock.

CWA744495

CWA73C3150R

CWA421066

CWH171039A

CWH7080300J

CWD54K1034

CWH551040J

CWA951582

CWH551040J

CWH001019

CWH561038J

CWE061118A

CWE201073

CWE04K1019A

CWD041102A

CWE03C1040

CWE06C1086

CWE161008

CWT07K1350

CWB051016J

CWH5850080

CWB811010

CWG87C2030

CWD601074A

CWD601075A

CWB111032

CWB14030

CU-E24HKE

CWD52K1098

5KD240XAA21

CWH50055

CWH561049

CWB811017

CWB32C1995

CWB121013

CWB011251

CWB001026J

CWB021330

CWG302245

CWG302246

CWH151075

CWA43C2169J

CWA43C2058J

CWA50C2381

CWA50C2214

CWA50C2185

CWE02C1037

CWH10K1046

CWA28K1107

CWA28K1076J

DS441355NPQA

CWA743402 m m m m m m m m

CWA744289 m

CWA73C3151R

G0C423J00001 m m m m m m m m m m m m m m m

CU-E28HKE m m m m m

CWB32C1997 m m m m m m m m

CWA43C2128J

CWT07K1334

CWB051018J m m m m m m

CWB14017

REMARKS

O

O

O

O

O

O

O

O

[PHAAM] Printed in Malaysia

SSSC0712 - 00

87

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