Panasonic Air Conditioner

Order No. PHAAM0810096C2

Air Conditioner

Indoor Unit Outdoor Unit

CS-E24JKES CU-E24JKE

CS-E28JKES CU-E28JKE

TABLE OF CONTENTS

PAGE

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

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

3 Features ------------------------------------------------------------- 8

4 Location of Controls and Components ------------------- 9

4.1. Indoor Unit--------------------------------------------------- 9

4.2. Outdoor Unit ------------------------------------------------ 9

4.3. Remote Control -------------------------------------------- 9

5 Dimensions--------------------------------------------------------10

5.1. Indoor Unit & Remote Control -------------------------10

5.2. Outdoor Unit ----------------------------------------------- 11

6 Refrigeration Cycle Diagram --------------------------------12

7 Block Diagram----------------------------------------------------13

8 Wiring Connection Diagram ---------------------------------14

8.1. Indoor Unit--------------------------------------------------14

8.2. Outdoor Unit -----------------------------------------------15

PAGE

9 Electronic Circuit Diagram----------------------------------- 17

9.1. Indoor Unit ------------------------------------------------- 17

9.2. Outdoor Unit----------------------------------------------- 18

10 Printed Circuit Board ------------------------------------------ 20

10.1. Indoor Unit ------------------------------------------------- 20

10.2. Outdoor Unit----------------------------------------------- 23

11 Installation Instruction ---------------------------------------- 25

11.1. Select the Best Location ------------------------------- 25

11.2. Indoor Unit ------------------------------------------------- 26

11.3. Outdoor Unit----------------------------------------------- 30

12 Operation and Control ---------------------------------------- 34

12.1. Basic Function -------------------------------------------- 34

12.2. Airflow Direction ------------------------------------------ 36

12.3. Quiet operation (Cooling Mode/Cooling area of Soft Dry Mode) ---------------------------------------- 37

© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2008.

Unauthorized copying and distribution is a violation of law.

12.4. Powerful Mode Operation ------------------------------ 38

12.5. ON Timer Control ---------------------------------------- 39

12.6. OFF Timer Control --------------------------------------- 39

12.7. Auto Restart Control------------------------------------- 39

12.8. Indication Panel------------------------------------------- 39

12.9. Patrol Operation ------------------------------------------ 40

12.10. e-ion Operation ------------------------------------------- 42

12.11. Mild Dry Cooling Operation ---------------------------- 44

13 Protection Control ---------------------------------------------- 45

13.1. Protection Control For All Operations --------------- 45

13.2. Protection Control For Cooling & Soft Dry

Operation--------------------------------------------------- 47

13.3. Protection Control For Heating Operation --------- 49

14 Servicing Mode -------------------------------------------------- 50

14.1. Auto OFF/ON Button ------------------------------------ 50

14.2. Remote Control Button --------------------------------- 51

15 Troubleshooting Guide---------------------------------------- 52

15.1. Refrigeration Cycle System --------------------------- 52

15.2. Relationship Between The Condition Of The

Air Conditioner And Pressure And Electric

Current ------------------------------------------------------ 53

15.3. Breakdown Self Diagnosis Function ---------------- 54

15.4. Error Codes Table---------------------------------------- 55

15.5. Self-diagnosis Method ---------------------------------- 56

16 Disassembly and Assembly Instructions --------------- 86

16.1. Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures ------ 86

16.2. Outdoor Electronic Controller Removal

Procedure -------------------------------------------------- 91

17 Technical Data---------------------------------------------------- 92

17.1. Operation Characteristics ------------------------------ 92

17.2. Sensible Capacity Chart------------------------------ 100

18 Exploded View and Replacement Parts List --------- 101

18.1. Indoor Unit ----------------------------------------------- 101

18.2. Outdoor Unit --------------------------------------------- 104

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. Do not modify the machine, part, material during repairing service.

2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.

3. Do not wrench the fasten terminal. Pull it out or insert it straightly.

4. 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.

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

6. 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.

7. 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.

8. 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.

9. 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.

10. Use the specified cable 4 u 1.5 mm 2

, 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.

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

17. 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.

18. In case of using existing (R22) pipes during installation of R410 models, must carry out pump down properly to collect back the refrigerant and oil before installation new unit.

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

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

3

19. 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.

20. During pump down operation, stop the compressor before remove the refrigerant piping. When remove piping while valves at open condition, burst may occur and cause injury.

21. 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.

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

23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.

24. Must not use other parts except original parts describe in catalog and manual.

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 15/16A (3/4 ~ 1.75HP),16A (2.0HP), 20A

(2.5HP) or 25A (3.0HP) power plug with earth pin for the connection to the socket.

2. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A (3/4 ~ 2.0HP), 20A (2.5HP) or 25A (3.0HP) circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 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 or servicing work. It may need two people to carry out the installation or servicing work.

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

11. Do not sit or step on the unit, you may fall down accidentally.

12. Do not touch the sharp aluminium fin, sharp parts may cause injury.

4

2 Specifications

MODEL

Performance Test Condition

INDOOR

OUTDOOR

Phase, Hz

V Power Supply i n g

C o o l

Capacity

Running Current

Input Power

Annual Consumption

EER kW

BTU/h

Kcal/h

A

W kWh

W/W

Kcal/hW

Power Factor

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Capacity

% dB-A

Power Level dB dB-A

Power Level dB kW

BTU/h

Kcal/h

A

W i n g

H e a t

Running Current

Input Power

COP

Power Factor

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Low Temp.: Capacity (kW) / I.Power (W) / COP

Extr Low Temp.: Capacity (kW) / I.Power (W) / COP

Max Current (A) / Max Input Power (W) dB-A

Power Level dB

Starting Current (A)

W/W

Kcal/hW

% dB-A

Power Level dB

Compressor

Type

Motor Type

Output Power W

Min.

0.90

3070

770

350

2.57

2.20

0.90

3070

770

360

2.50

2.14

8.60

29300

7400

12.1

2.66k

3.23

2.78

96

47 / 38 / 35

63 / 54 / 51

52 / -

66 / -

7.17 / 2.83k / 2.53

6.13 / 2.86k / 2.14

14.6 / 3.20k

12.1

Hermetic Motor

Brushless (4-poles)

1.7k

CS-E24JKES

CU-E24JKE

EUROVENT

Single, 50

230

Mid.

6.80

23200

5850

9.7

2.12k

1060

3.21

2.76

95

47 / 38 / 35

63 / 54 / 51

52 / -

66 / -

Max.

8.10

27600

6970

2.70k

3.00

2.58

9.90

33800

8510

3.20k

3.09

2.66

Min.

0.90

3070

770

350

2.57

2.20

0.90

3070

770

360

2.50

2.14

9.60

32700

8260

15.0

3.30k

2.91

2.50

96

48 / 38 / 35

64 / 54 / 51

53 / -

67 / -

7.97 / 3.32k / 2.40

6.77 / 3.47k / 1.95

15.6 / 3.75k

15.0

Hermetic Motor

Brushless (4-poles)

1.7k

CS-E28JKES

CU-E28JKE

EUROVENT

Single, 50

230

Mid.

7.65

26100

6580

11.5

2.54k

1270

3.01

2.59

96

49 / 38 / 35

65 / 54 / 51

53 / -

67 / -

Max.

8.60

29300

7400

2.95k

2.92

2.51

11.00

37500

9460

3.75k

2.93

2.53

5

MODEL INDOOR

OUTDOOR

I

N

D

O

O

R

F

A

N

Type

Material

Motor Type

Input Power

Output Power

Speed

QLo

Lo

Me

Hi

Shi

Cool

Heat

Cool

Heat

Cool

Heat

Cool

Heat

Cool

Heat

O

O

R

O

U

T

D

Type

Material

Motor Type

Input Power W

F

A

N

Output Power

Speed Hi

Cool

Heat

Moisture Removal

Indoor Airflow

QLo

Lo

Me

Cool

Heat

Cool

Heat

Cool

Heat

Hi

Cool

Heat

Cool

Shi

Heat

Cool

Outdoor Airflow Hi

Heat

Refrigeration Cycle

Control Device

Refrigerant Oil

Dimension

Refrigerant Type

Height (I/D / O/D)

Width (I/D / O/D)

Depth (I/D / O/D)

Net (I/D / O/D) Weight

P

I

P

I

N

G

Pipe Diameter (Liquid / Gas)

Standard Length

Length Range (min - max)

I/D & O/D Height Different

Additional Gas Amount

Length for Additional Gas

Inner Diameter

Drain Hose

Length

W rpm rpm

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) 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) m

3

/min (ft

3

/min) m

3

/min (ft

3

/min) cm

3 g (oz) mm (inch) mm (inch) mm (inch) kg (lb) mm (inch) m (ft) m (ft) m (ft) g/m (oz/ft) m (ft) mm mm rpm rpm rpm rpm rpm rpm

W

W rpm rpm rpm rpm

CS-E24JKES

CU-E24JKE

Cross-Flow Fan

ASG30K1

Transistor (8-poles)

85.1

40

950

1040

1050

1140

1230

1310

1410

1480

1480

1520

Propeller Fan

PP

Induction (6-poles)

178.02

80

690

630

3.9 (8.2)

11.90 (420)

13.20 (466)

13.30 (470)

14.60 (516)

15.80 (558)

17.00 (600)

18.40 (650)

19.50 (690)

19.40 (685)

20.10 (710)

50.2 (1770)

50.2 (1770)

Capillary Tube

FV50S (800)

R410A, 1.70k (60.0)

290 (11-7/16) / 795 (31-5/16)

1070 (42-5/32) / 875 (34-15/32)

235 (9-9/32) / 320 (12-5/8)

12 (26) / 65 (143)

6.35 (1/4) / 15.88 (5/8)

5.0 (16.4)

3 (9.8) ~ 30 (98.4)

20 (65.6)

30 (0.3)

10 (32.8)

16

650

CS-E28JKES

CU-E28JKE

Cross-Flow Fan

ASG30K1

Transistor (8-poles)

85.1

40

950

1040

1050

1140

1260

1330

1470

1520

1520

1570

Propeller Fan

PP

Induction (6-poles)

178.02

80

710

680

4.5 (9.5)

11.90 (420)

13.20 (466)

13.30 (470)

14.60 (516)

16.30 (576)

17.30 (611)

19.30 (680)

20.10 (710)

20.10 (710)

20.60 (727)

54.5 (1925)

54.5 (1925)

Expansion Valve

FV50S (800)

R410A, 1.80k (63.5)

290 (11-7/16) / 795 (31-5/16)

1070 (42-5/32) / 875 (34-15/32)

235 (9-9/32) / 320 (12-5/8)

12 (26) / 66 (132)

6.35 (1/4) / 15.88 (5/8)

5.0 (16.4)

3 (9.8) ~ 30 (98.4)

20 (65.6)

30 (0.3)

10 (32.8)

16

650

6

MODEL

Indoor Heat

Exchanger

Outdoor Heat

Exchanger

Air Filter

Power Supply

Power Supply Cord

Thermostat

Protection Device

Fin Material

Fin Type

Row u Stage u FPI

Size (W u H u L)

Fin Material

Fin Type

Row u Stage u FPI

Size (W u H u L)

Material

Type

Indoor Operation Range

Outdoor Operation Range

Cooling

Heating

Cooling

Heating

INDOOR

OUTDOOR

mm mm

A

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

CS-E24JKES

CU-E24JKE

Aluminium (Pre Coat)

Slit Fin

2 u 15 u 21

810 u 315 u 25.4

Aluminium (Pre Coat)

Corrugated Fin

2 u 30 u 19

38.1

u 762 u 895

865

Polypropylene

One-Touch

Outdoor Power Supply

Nil

Electronic Control

Electronic Control

Dry Bulb

32

16

30

16

Wet Bulb

23

11

43

16

24

-5

26

11

18

-6

CS-E28JKES

CU-E28JKE

Aluminium (Pre Coat)

Slit Fin

2 u 15 u 21

810 u 315 u 25.4

Aluminium (Pre Coat)

Corrugated Fin

2 u 30 u 19

38.1

u 762 u 895

865

Polypropylene

One-Touch

Outdoor Power Supply

Nil

Electronic Control

Electronic Control

Dry Bulb

32

16

30

16

Wet Bulb

23

11

43

16

24

-5

26

11

18

-6

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)

3. Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20 qC, outdoor 2/1qC.

4. Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20 qC, outdoor

-7/-8 qC.

5. Specifications are subjected to change without prior notice for further improvement.

7

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-E24/28JK, 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

8

4 Location of Controls and Components

4.1.

Indoor Unit

4.2.

Outdoor Unit

4.3.

Remote Control

9

5 Dimensions

5.1.

Indoor Unit & Remote Control

10

5.2.

Outdoor Unit

11

6 Refrigeration Cycle Diagram

12

7 Block Diagram

13

8 Wiring Connection Diagram

8.1.

Indoor Unit

14

8.2.

Outdoor Unit

8.2.1.

CU-E24JKE

15

8.2.2.

CU-E28JKE

16

9 Electronic Circuit Diagram

9.1.

Indoor Unit

17

9.2.

Outdoor Unit

9.2.1.

CU-E24JKE

18

9.2.2.

CU-E28JKE

19

10 Printed Circuit Board

10.1. Indoor Unit

10.1.1.

Main Printed Circuit Board

20

10.1.2.

Power Printed Circuit Board

10.1.3.

Indicator Printed Circuit Board

10.1.4.

Receiver Printed Circuit Board

21

10.1.5.

High Voltage Power Supply Printed Circuit Board

22

10.2. Outdoor Unit

10.2.1.

Main Printed Circuit Board

23

10.2.2.

Power Printed Circuit Board

24

11 Installation Instruction

11.1. Select the Best Location

11.1.1.

Indoor Unit

• Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.

• 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.

11.1.3.

Indoor/Outdoor Unit Installation

Diagram

11.1.2.

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 the [piping length for additional gas], additional refrigerant should be added as shown in the table.

Model

E15***,

XE15***

E18***,

XE18***

Horse

Power

(HP)

Piping size

Gas

Liquid

Std.

Length

(m)

Max.

Elevation

(m)

Min.

Piping

Length

(m)

Max.

Piping

Length

(m)

Additional

Refrigerant

(g/m)

Piping

Length for add. gas

(m)

E7***,

XE7***

E9***,

XE9***

E12***,

XE12***

3/4 ~

1.75HP

3/8”

1/2”

1/4” 5

15

15

15

15

15

3

3

3

3

3

15

15

15

15

20

20

20

20

20

20

7.5

7.5

7.5

7.5

10

E21***,

XE21***

2.0 ~

3.0HP

E24***,

XE24***

E28***

5/8”

15

20

20

3

3

3

20

30

30

20

30

30

10

10

10

Example: For E9***

If the unit is installed at 10 m distance, the quantity of additional refrigerant should be 38 g .... (10-7.5) m x 15 g/m = 38 g.

25

11.2.

Indoor Unit

11.2.1.

How to Fix Installation Plate

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

11.2.2.

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.

Dimension

Model

E7***, XE7***

E9***, XE9***

E12***, XE12***

E15***, XE15***

E18***, XE18***

E21***, XE21***

E24***, XE24***

E28***

485 mm 82 mm 165 mm 158 mm 43 mm 95 mm

585 mm 82 mm 165 mm 158 mm 169 mm 219 mm

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

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

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

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

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

from this line.

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

from this line.

1. Mount the installation plate on the wall with 5 screws or more (at least 5 screws).

(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 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 128 mm for left and right hole respectively.

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

11.2.3.

Indoor Unit Installation

26

1. For the right rear piping

2. For the right and right bottom piping

3. For the embedded piping

27

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

11.2.4.

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.

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

This equipment must be properly earthed.

28

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

• Earth wire shall be Yellow/Green (Y/G) in colour and longer than the other AC wires for safety reason.

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.

29

11.3. Outdoor Unit

11.3.1.

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.

Model

E7***

E9***, XE9***

E12***, XE12***

E15***-1

E15***, E15***-3

E18***, XE18***

E21***

E24***, XE24***

E28***

A

570 mm

612.5 mm

613 mm

B

105 mm

131 mm

131 mm

C

18.5 mm

19 mm

16 mm

D

320 mm

383 mm

360.5 mm

11.3.2.

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.

CAUTION

Do not over tighten, over tightening cause gas leakage.

Piping size Torque

1/4” (6.35 mm)

3/8” (9.52 mm)

[18 N

[42 N l l m (1.8 kgf.m)] m (4.3 kgf.m)]

1/2” (12.7 mm)

5/8” (15.88 mm)

3/4” (19.05 mm)

[55 N

[65 N

[100 N l l l m (5.6 kgf.m)] m (6.6 kgf.m)] m (10.2 kgf.m)]

Connecting the Piping to Outdoor

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut

(located 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.

30

Connecting the Piping to Outdoor Multi

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

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

31

11.3.3.

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.

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 TAKE 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.

11.3.4.

Connect the Cable to the Outdoor Unit

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

2. Cable connection to the power supply through Isolating

Devices (Disconnecting means).

• Connect the approved polychloroprene sheathed power

supply cord 3 u 1.5 mm 2

(3/4 ~ 1.75HP), 3 u 2.5 mm 2

(2.0 ~ 2.5HP) or 3 u 4.0 mm 2

(3.0HP) type designation

245 IEC 57 or heavier cord to the terminal board, and connect the others end of the cord to Isolating Devices

(Disconnecting means).

3. 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.

4. Connect the power supply cord and connecting cable between indoor unit and outdoor unit according to the diagram below.

32

5. Secure the power supply cord and connecting cable onto the control board with the holder.

6. Attach the control board cover back to the original position with screw.

7. For wire stripping and connection requirement, refer to instruction of indoor unit.

This equipment must be properly earthed.

• Note: Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap.

• Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.

11.3.5.

Pipe Insulation

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E

FOAM with thickness 6mm or above.

33

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 Temperature < -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 Temperature < -2.0

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 Temperature > +2.0

qC.

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

34

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

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

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

35

[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

Cooling and e-ion

Soft Dry

Operation Mode Airflow Direction

Auto with Heat Exchanger

Temperature

Manual

Auto

Manual

Auto

Manual

A

B

C

1

20

20

20

2

Vane Angle ( q)

3 4

20

45

32

26

26

32

45

20 ~ 45

32

20 ~ 45

32

57

37

37

5

68

45

45

36

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 68 78 102 112

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

37

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

38

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

POWER

Green

TIMER

Orange

QUIET

Orange

POWERFUL

Orange

Light ON Operation ON Quiet Setting ON Quiet Mode ON Powerful Mode ON

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

Blue e-ion ON e-ion OFF

MILD DRY PATROL SENSOR

Blue Blue

Mild Dry ON

Mild Dry OFF

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.

39

12.9. Patrol Operation

A. Purpose

To monitor air dirtiness level by using Patrol sensor and to maintain air freshness by activates e-ion operation.

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.

40

C. Control Content

a. Patrol 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” button.

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.

41

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 and restores last saved Patrol operation status.

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

• When OFF timer activates during any operation, all operation stops and the latest Patrol operation status is saved.

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.

i. Error Detection Control

• The Patrol error detection control starts once the power is supplied to Patrol sensor. However, the error will display when the

Patrol operation is ON.

• Error detection method:

1. If the Patrol sensor feedback is 0V or 5V continuous for 6 hours, Patrol sensor error occurs. However, the error will display only when the Patrol operation is ON.

• Patrol Sensor Control after error occurs.

1. During any operation mode combines with Patrol operation

• Power supply to Patrol sensor is OFF.

• Air conditioner normal mode operation continues with Patrol LED and Timer LED blinking and “H58” is indicated.

• Timer LED will always blinking and the Patrol LED continues blinking if the Patrol operation is ON and stops blinking if the patrol operation is OFF.

2. During Patrol individual mode.

• Power supply to Patrol sensor is OFF.

• Patrol LED and Timer LED blinking and “H58” is indicated.

• Timer LED will always blinking and the Patrol LED continues blinking if the Patrol operation is ON and stops blinking if the patrol operation is OFF.

• Error cancel condition:

1. Power supply reset.

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.

42

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.

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 and restores last save e-ion operation status.

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

• When OFF timer activates during any operation, all operation stops and the latest e-ion operation status is saved.

d. Indicator

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

e. e-ion Check Mode

• To check if e-ion is malfunctioning, press “e-ion” button and follow by “Check” button 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.

43

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.

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.

12.11. Mild Dry Cooling Operation

• This operation helps to prevent decreases in room humidity while maintaining the setting temperature.

• During unit running at Cooling operation mode, if “Mild Dry Cooling” button is pressed, Mild Dry Cooling operation starts and Mild

Dry Cooling indicators turns ON.

• Mild dry cooling operation is unavailable when the unit is operating Auto mode, Soft Dry mode, Patrol individual operation or e-ion individual operation.

• Mild dry cooling operation is cancelled when the unit turned OFF, or when the operation mode changed from Cooling to other mode.

• Powerful, Quiet and Mild Dry Cooling mode cannot function at the same time, the unit will follows the operation according to the last signal received.

• During this operation, the compressor frequency changes according to operating condition to prevent room humidity decreases and when AUTO AIR SWING is set, the vertical airflow direction fixed at lower limit position.

44

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.

E24JK

Operation Mode

Cooling/Soft Dry (A)

Cooling/Soft Dry (B)

Cooling/Soft Dry (C)

Heating

X (A)

15.0

13.6

15.0

13.4

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

Y (A)

19.0

19.0

19.0

19.0

X (A)

15.2

13.8

15.2

15.1

E28JK

Y (A)

19.0

19.0

19.0

19.0

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.

3. If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96 is indicated).

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, timer LED will be blinking

(“F99” is indicated).

45

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).

13.1.6.

Low Pressure Prevention Control (Gas Leakage Detection)

a. Control start conditions

• For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.

• During Cooling and Soft Dry operations:

Indoor suction temperature - indoor piping temperature is below 4 qC.

• During Heating operations :

Indoor piping temperature - indoor suction is under 5 qC.

b. Control contents

• Compressor stops (and restart after 3 minutes).

• If the conditions above happen 2 times within 20 minutes, the unit will:

- Stop operation

- Timer LED blinks and “F91” indicated.

13.1.7.

Compressor Tank Temperature Rise Protection Control

a. Control start conditions

• For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.

• During Cooling and Soft Dry operations:

Indoor suction temperature - indoor piping temperature is below 4 qC.

Indoor temperature and outdoor temperature is 30±5 qC.

Remote Control setting 16 qC and Hi Fan Speed.

• During Heating operations:

Indoor piping temperature - indoor suction is under 5 qC.

Indoor temperature and outdoor temperature is 20±2 qC.

Remote control setting 30 qC and Hi Fan Speed.

b. Control contents

• Compressor stops (and restart after 3 minutes)

• If the conditions above happen 2 times within 20 minutes, the unit will:

- Stop operation

- Timer LED blinks and “F91” indicated

13.1.8.

Low Frequency Protection Control 1

• When the compressor operate at frequency lower than 24 Hz continued for 20 minutes, the operation frequency will be changed to 23 Hz for 2 minutes.

46

13.1.9.

Low Frequency Protection Control 2

• When all the below conditions comply, the compressor frequency will change to lower frequency.

Temperature, T, for:

Indoor intake air ( qC)

Outdoor air ( qC)

Indoor heat exchanger ( qC)

Cooling/Soft Dry

T < 15 or T 30

T < 16 or T 38

T < 30

Heating

T < 4 or T 24

T 0

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.

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.

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 26 q (regardless of Auto or Manual Airflow Direction Setting)

5. The vertical louver will be fixed front.

47

13.2.5.

Freeze Prevention Control 1

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.

13.2.6.

Freeze Prevention Control 2

1. Control start conditions

• During Cooling operation and soft dry operation.

- During thermo OFF condition, indoor intake temperature is less than 10°C or

- Compressor stops for freeze prevention control

• Either one of the conditions above occurs 5 times in 60 minutes.

2. Control contents

• Operation stops.

• Timer LED blinks and “H99” indicated.

48

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 Prevention Control

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

13.3.5.

Deice Operation

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

49

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 “AC RESET” button and then press any button at remote control to transmit and store the desired transmission code to the EEPROM.

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

Remote Control Printed Circuit Board

Jumper A (J-A)

Short

Jumper B (J-B)

Open

Remote Control No.

A (Default)

Open

Short

Open

Open

Short

Short

B

C

D

50

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. Remote Control Button

14.2.1.

SET BUTTON

• To check remote control transmission code and store the transmission code to EEPROM.

- Press “SET” button for more than 10 seconds by using pointer.

- Press “TMER SET” button until a “beep” sound is heard as confirmation of transmission code change.

• To change the air quality sensor sensitivity

- Press and release by using 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.

14.2.2.

CLOCK BUTTON

• To change the remote control’s time format

- Press for more than 5 seconds.

14.2.3.

RESET (RC)

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

- Press once to clear the memory.

14.2.4.

RESET (AC)

• To restore the unit’s setting to factory default

- Press once to restore the unit’s setting.

14.2.5.

TIMER

• To change indoor unit indicator’s LED intensity

- Press continuously for 5 seconds.

14.2.6.

TIMER

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

- Press continuously for 10 seconds.

51

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.

52

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.

53

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.)

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

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.

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

54

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

H98

H99

F11

F90

F91

F93

F95

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

Indoor high pressure protection

Continue for 6 hours

Indoor heat exchanger anti-freezing protection

Cooling / Heating cycle changeover abnormality

PFC control

Refrigeration cycle abnormality

4 times occurrence within 30 minutes

4 times occurrence within 10 minutes

7 times occurrence continuously

Outdoor compressor abnormal revolution 4 times occurrence within 20 minutes

Cool high pressure protection 4 times occurrence within 20 minutes

IPM (power transistor) overheating protection

• Indoor/Outdoor supply voltage

• Gas sensor

(defective or disconnected)

• 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

F96

F97

F98

F99

Outdoor compressor overheating protection

Total running current protection

Outdoor Direct Current (DC) peak detection

4 times occurrence within 20 minutes

3 times occurrence within 20 minutes

7 times occurrence continuously

• 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.

55

15.5. Self-diagnosis Method

15.5.1.

H11 (Indoor/Outdoor Abnormal Communication)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal.

Malfunction Caused

• Faulty indoor unit PCB.

• Faulty outdoor unit PCB.

• Indoor unit-outdoor unit signal transmission error due to wrong wiring.

• Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units.

• Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform.

Troubleshooting

56

15.5.2.

H12 (Indoor/Outdoor Capacity Rank Mismatched)

Malfunction Decision Conditions

• During startup, error code appears when different types of indoor and outdoor units are interconnected.

Malfunction Caused

• Wrong models interconnected.

• Wrong indoor unit or outdoor unit PCBs mounted.

• Indoor unit or outdoor unit PCBs defective.

• Indoor-outdoor unit signal transmission error due to wrong wiring.

• Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units.

Troubleshooting

57

15.5.3.

H14 (Indoor Intake Air Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

58

15.5.4.

H15 (Compressor Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

59

15.5.5.

H16 (Outdoor Current Transformer Open Circuit)

Malfunction Decision Conditions

• A current transformer (CT) is detected by checking the compressor running frequency ( rated frequency) and CT detected input current (less than 0.65A) for continuously 20 seconds.

Malfunction Caused

• CT defective.

• Outdoor PCB defective.

• Compressor defective (low compression).

Troubleshooting

60

15.5.6.

H19 (Indoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions

• The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm).

Malfunction Caused

• Operation stops due to short circuit inside the fan motor winding.

• Operation stops due to breaking of wire inside the fan motor.

• Operation stops due to breaking of fan motor lead wires.

• Operation stops due to Hall IC malfunction.

• Operation error due to faulty indoor unit PCB.

Troubleshooting

61

15.5.7.

H23 (Indoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

62

15.5.8.

H25 (e-ion Air Purifying System Abnormal)

Malfunction Decision Conditions

• During standby of cooling and heating operation, e-ion breakdown occurs and air conditioner stops operation.

Malfunction Caused

• Faulty indoor main PCB.

• Faulty indoor e-ion power module.

Troubleshooting

63

15.5.9.

H27 (Outdoor Air Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

64

15.5.10. H28 (Outdoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

65

15.5.11. H30 (Compressor Discharge Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

66

15.5.12. H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

67

15.5.13. H33 (Unspecified Voltage between Indoor and Outdoor)

Malfunction Decision Conditions

• The supply power is detected for its requirement by the indoor/outdoor transmission.

Malfunction Caused

• Wrong models interconnected.

• Wrong indoor unit and outdoor unit PCBs used.

• Indoor unit or outdoor unit PCB defective.

Troubleshooting

68

15.5.14. H34 (Outdoor Heat Sink Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

69

15.5.15. H36 (Outdoor Gas Pipe Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

70

15.5.16. H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors.

Malfunction Caused

• Faulty connector connection.

• Faulty sensor.

• Faulty PCB.

Troubleshooting

71

15.5.17. H58 (Patrol Sensor Abnormality)

Malfunction Decision Conditions

• If Patrol sensor feedback is 0V or 5V continuous for 6 hours.

• Error will display only when the Patrol operation is ON.

Malfunction Caused

• Faulty connector connection.

• Faulty Patrol sensor.

Troubleshooting

72

15.5.18. H97 (Outdoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions

• The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor.

Malfunction Caused

• Operation stops due to short circuit inside the fan motor winding.

• Operation stops due to breaking of wire inside the fan motor.

• Operation stops due to breaking of fan motor lead wires.

• Operation stops due to Hall IC malfunction.

• Operation error due to faulty outdoor unit PCB.

Troubleshooting

73

15.5.19. H98 (Indoor High Pressure Protection)

Error Code will not display (no Timer LED blinking) but store in EEPROM

Malfunction Decision Conditions

• During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60 qC.

Malfunction Caused

• Clogged air filter of the indoor unit.

• Dust accumulation on the indoor unit heat exchanger.

• Air short circuit.

• Detection error due to faulty indoor pipe temperature sensor.

• Detection error due to faulty indoor unit PCB.

Troubleshooting

74

15.5.20. H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry)

Error code will not display (no TIMER LED blinking) but store in EEPROM

Malfunction Decision Conditions

• Freeze prevention control takes place (when indoor pipe temperature is lower than 2 qC).

Malfunction Caused

• Clogged air filter of the indoor unit.

• Dust accumulation on the indoor unit heat exchanger.

• Air short circuit.

• Detection error due to faulty indoor pipe temperature sensor.

• Detection error due to faulty indoor unit PCB.

Troubleshooting

75

15.5.21. F11 (4-way valve Abnormality)

Malfunction Decision Conditions

• When heating operation, when indoor pipe temperature is below 10 qC.

• When cooling operation, when indoor pipe temperature is above 45 qC.

Malfunction Caused

• Connector in poor contact.

• Faulty sensor.

• Faulty outdoor unit PCB.

• 4-way valve defective.

Troubleshooting

76

15.5.22. F17 (Indoor Standby Units Freezing Abnormality)

Malfunction Decision Conditions

• When the different between indoor intake air temperature and indoor pipe temperature is above 10 qC or indoor pipe temperature is below -1.0

qC.

Remark:

When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).

Malfunction Caused

• Wrong wiring connection.

• Faulty sensor.

• Faulty expansion valve.

Troubleshooting

77

15.5.23. F90 (Power Factor Correction Protection)

Malfunction Decision Conditions

• During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level.

Malfunction Caused

• DC voltage peak due to power supply surge.

• DC voltage peak due to compressor windings not uniform.

• Faulty outdoor PCB.

Troubleshooting

78

15.5.24. F91 (Refrigeration Cycle Abnormality)

Malfunction Decision Conditions

• During cooling, compressor frequency = Fcmax.

• During heating, compressor frequency > Fhrated.

• During cooling and heating operation, running current: 0.65A < I < 1.65A.

• During cooling, indoor intake - indoor pipe < 4 qC.

• During heating, indoor pipe - indoor intake < 5 qC.

Multi Models Only

- Gas shortage detection 1: A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency. During startup and operating of cooling and heating, input current < 8.78/256 (A/Hz) u compressor running frequency + 0.25.

- Gas shortage detection 2: A gas shortage is detected by checking the difference between indoor pipe temperature and indoor intake air temperature during cooling and heating.

Malfunction Caused

• Refrigerant shortage (refrigerant leakage).

• Poor compression performance of compressor.

• 2/3 way valve closed.

• Detection error due to faulty indoor intake air or indoor pipe temperature sensors.

Troubleshooting

79

15.5.25. F93 (Compressor Rotation Failure)

Malfunction Decision Conditions

A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit.

Malfunction Caused

• Compressor terminal disconnect.

• Outdoor PCB malfunction.

Troubleshooting

80

15.5.26. F95 (Cooling High Pressure Abnormality)

Malfunction Decision Conditions

During operation of cooling, when outdoor unit heat exchanger high temperature data (61 qC) is detected by the outdoor pipe temperature sensor.

Malfunction Caused

• Outdoor pipe temperature rise due to short circuit of hot discharge air flow.

• Outdoor pipe temperature rise due to defective of outdoor fan motor.

• Outdoor pipe temperature rise due to defective outdoor pipe temperature sensor.

• Outdoor pipe temperature rise due to defective outdoor unit PCB.

Troubleshooting

81

15.5.27. F96 (IPM Overheating)

Malfunction Decision Conditions

During operating of cooling and heating, when IPM temperature data (100 qC) is detected by the IPM temperature sensor.

Multi Models Only

• Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated.

• Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.

Malfunction Caused

• IPM overheats due to short circuit of hot discharge air flow.

• IPM overheats due to defective of outdoor fan motor.

• IPM overheats due to defective of internal circuitry of IPM.

• IPM overheats due to defective IPM temperature sensor.

Multi Models Only

• Compressor OL connector poor contact.

• Compressor OL faulty.

Troubleshooting

82

15.5.28. F97 (Compressor Overheating)

Malfunction Decision Conditions

During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor.

Malfunction Caused

• Refrigerant shortage (refrigerant leakage).

• 2/3 way valve closed.

• Detection error due to faulty compressor tank temperature sensor.

Troubleshooting

83

15.5.29. F98 (Input Over Current Detection)

Malfunction Decision Conditions

During operation of cooling and heating, when an input over-current (16.8A) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.

Malfunction Caused

• Over-current due to compressor failure.

• Over-current due to defective outdoor unit PCB.

• Over-current due to defective inverter main circuit electrolytic capacitor.

• Over-current due to excessive refrigerant.

Troubleshooting

84

15.5.30. F99 (Output Over Current Detection)

Malfunction Decision Conditions

During operation of cooling and heating, when an output over-current (18.5A) is detected by checking the current that flows in the inverter DC peak sensing circuitry.

Malfunction Caused

• DC peak due to compressor failure.

• DC peak due to defective power transistor(s).

• DC peak due to defective outdoor unit PCB.

Troubleshooting

• Checking the power transistor.

• Never touch any live parts for at least 10 minutes after turning off the circuit breaker.

• If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using the tester.

• For the UVW, make measurement at the Faston terminal on the board of the relay connector.

85

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

Lift to open the horizontal vane

16.1.2.

To remove horizontal vane

86

16.1.3.

To remove power electronic controller

87

16.1.4.

To remove discharge grille

16.1.5.

To remove control board

88

16.1.6.

To remove cross flow fan and indoor fan motor

89

90

16.2. Outdoor Electronic Controller Removal Procedure

1. Remove the 8 screws of the Top Panel.

4. Remove the Control Board.

Fig. 1

2. Remove the 8 screws of the Front Panel.

Fig. 4

5. Remove the 6 screws of the Electronic Controller.

Fig. 2

3. Remove the Top Cover of the Electronic Controller.

Fig. 5

Caution! When handling electronic controller, be careful of electrostatic discharge.

Fig. 3

91

17 Technical Data

17.1. Operation Characteristics

17.1.1.

CS-E24JKES CU-E24JKE

Cooling Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature: 27/19 qC

Remote control setting: HI FAN, COOL 16 qC

Compressor frequency: F c

Voltage: 230 V

92

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: F c

Voltage: 230 V

93

Heating Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature: 20/qC

Remote control setting: HI FAN, HEAT 30 qC

Compressor frequency: F h

Voltage: 230 V

94

Heating Characteristic at Different Piping Length

Condition

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

Remote control setting: HI FAN, HEAT 30 qC

Compressor frequency: F h

Voltage: 230 V

95

17.1.2.

CS-E28JKES CU-E28JKE

Cooling Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature: 27/19 qC

Remote control setting: HI FAN, COOL 16 qC

Compressor frequency: F c

Voltage: 230 V

96

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: F c

Voltage: 230 V

97

Heating Characteristic at Different Outdoor Air Temperature

Condition

Indoor room temperature: 20/qC

Remote control setting: HI FAN, HEAT 30 qC

Compressor frequency: F h

Voltage: 230 V

98

Heating Characteristic at Different Piping Length

Condition

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

Remote control setting: HI FAN, HEAT 30 qC

Compressor frequency: F h

Voltage: 230 V

99

17.2. Sensible Capacity Chart

CS-E24JKES CU-E24JKE

Indoor wet bulb temp.

17.0

qC

19.0

qC

19.5

qC

22.0

qC

TC

6.75

7.41

8.07

CS-E28JKES CU-E28JKE

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)

40

IP TC SHC

5.86

4.71

2.09

2.12

2.13

2.17

6.44

7.02

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)

40

IP TC SHC

6.59

5.30

2.50

2.54

2.55

2.60

7.24

7.89

5.57

5.79

IP

2.23

2.28

2.32

IP

2.68

2.73

2.78

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

100

18 Exploded View and Replacement Parts List

18.1. Indoor Unit

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.

101

<Model: CS-E24JKES CS-E28JKES>

44

45

46

47

48

40

41

42

43

36

37

38

39

32

33

34

35

28

29

30

31

24

25

26

27

20

21

22

23

16

17

18

19

12

13

14

15

8

9

10

11

REF NO.

1

PART NAME & DESCRIPTION

CHASSY COMPLETE

2

3

FAN MOTOR

CROSS FLOW FAN COMPLETE

6

7

4

5

BEARING ASS’Y

SCREW - CROSS FLOW FAN

GENERATOR COMPLETE

EVAPORATOR

FLARE NUT (LIQUID)

FLARE NUT (GAS)

E-ION AIR PURIFYING SYSTEM

HOLDER SENSOR

CONTROL BOARD CASING

TERMINAL BOARD COMPLETE

ELECTRONIC CONTROLLER - MAIN

ELECTRONIC CONTROLLER - POWER

ELECTRONIC CONTROLLER - HVU

ELECTRONIC CONTROLLER - INDICATOR

ELECTRONIC CONTROLLER - RECEIVER

SENSOR COMPLETE

CONTROL BOARD TOP COVER

INDICATOR HOLDER

CONTROL BOARD FRONT COVER

DISCHARGE GRILLE COMPLETE

FULCRUM

VERTICAL VANE

CONNECTING BAR

CONNECTING BAR

CONNECTING BAR

CONNECTING BAR

CONNECTING BAR

AIR SWING MOTOR

AIR SWING MOTOR

LEAD WIRE - AIR SWING MOTOR

CAP - DRAIN TRAY

HORIZONTAL VANE

BACK COVER CHASSIS

REMOTE CONTROL COMPLETE

FRONT GRILLE COMPLETE

INTAKE GRILLE COMPLETE

GRILLE DOOR

E-ION FILTER

SCREW - FRONT GRILLE

CAP - FRONT GRILLE

DRAIN HOSE

INSTALLATION PLATE

BAG COMPLETE - INSTALLATION SCREW

OPERATING INSTRUCTION

INSTALLATION INSTRUCTION

1

1

1

1

2

15

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

QTY.

1

1

1

1

1

1

1

1

4

3

1

2

1

1

1

1

1

1

1

1

CWA745348

CWA745479

CWA745288

CWA50C2401

CWH131350

CWD933021

CWH13C1183

CWE20C3007

CWH621103

CWE241289

CWE261156

CWE261158

CWE261157

CWE261159

CWE261160

CWA98K1014

CS-E24JKES

CWD50C1623

L6CBYYYL0038

CWH02C1077

CWH64K007

CWH551146

CWH94C0028

CWB30C2777

CWT251030

CWT251033

CWD93C1090

CWH32143

CWH102370

CWA28C2357

CWA73C3783

CWA745322

CWA981162J

CWA67C8221

CWH521096

CWE24C1295

CWD933031

CWA75C3227

CWE11C4171

CWE22C1483

CWE14C1029

CWD00K1015

XTT4+16CFJ

CWH521194

CWH851063

CWH361098

CWH82C067

CWF566698

CWF613869

CS-E28JKES m m m m m m m m m m m m m

CWA73C3827 m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m

REMARKS

O

O

O

O

O

O

O

O

O

O

O

O

O

102

REF NO.

49

PART NAME & DESCRIPTION

INSTALLATION INSTRUCTION

50

51

INSTALLATION INSTRUCTION

INSTALLATION INSTRUCTION

52

53

54

55

INSTALLATION INSTRUCTION

INSTALLATION INSTRUCTION

INSTALLATION INSTRUCTION

INSTALLATION INSTRUCTION

1

1

1

1

QTY.

1

1

1

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488).

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

CS-E24JKES

CWF613870

CWF613871

CWF613872

CWF613873

CWF613874

CWF613875

CWF613876

CS-E28JKES m m m m m m m

REMARKS

103

18.2. Outdoor Unit

18.2.1.

CU-E24JKE

104

18.2.2.

CU-E28JKE

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.

105

<Model: CU-E24JKE CU-E28JKE>

30

31

32

33

26

27

28

29

22

23

24

25

16

17

18

19

21

REF. NO.

3

4

1

2

12

13

14

15

5

9

10

11

47

48

49

51

42

43

44

46

53

54

55

56

38

39

40

41

34

35

36

37

DESCRIPTION & NAME

CHASSY ASS’Y

ANTI - VIBRATION BUSHING

PACKING

COMPRESSOR

NUT - COMPRESSOR MOUNT

FAN MOTOR BRACKET

FAN MOTOR

SCREW - FAN MOTOR BRACKET

SCREW - FAN MOTOR MOUNT

PROPELLER FAN ASS’Y

NUT - PROPELLER FAN

CONDENSER COMPLETE

TUBE ASSY (CAP.TUBE)

DISCHARGE MUFFLER

TUBE ASSY (CAP.TUBE&RECEIVER)

TUBE ASS’Y (EXP. VALVE)

RECEIVER

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

V-COIL COMPLETE FOR EXP.VALVE

SENSOR CO (COMP.DISCHARGE)

SENSOR COMPLETE

REACTOR

CONTROL BOARD CASING (SIDE)

TERMINAL BOARD ASSY

TERMINAL BOARD ASSY

ELECTRONIC CONTROLLER - MAIN

CONTROL BOARD COVER (TOP)

CABINET SIDE PLATE(L)

HANDLE

CABINET SIDE PLATE (R)

CABINET FRONT PLATE ASSY

WIRE NET

CABINET TOP PLATE

CONTROL BOARD COVER (R)

DRAIN HOSE & PACKING

SOUND PROOF MATERIAL

SOUND PROOF MATERIAL

CAPACITOR-FM (3.5MF/460V)

ELECTRONIC CONTROLLER

CU-E24JKE

CWD52K1190

CWH50055

CWB81043

5KD240XAF21

CWH561049

CWD541126

CWA951636

CWH551217

CWH551040J

CWH001019

CWH561038J

CWB32C2715

CWT01C4686

CWB121013

CWT01C4733

CWB14030

CWB001026J

CWH351057

CWB011363

CWB021434

CWH151197

CWH171039A

CWH7080300J

CWA50C2185

CWH711010

CWA43C2169J

CWA50C2515

CWA50C2517

G0C403J00001

CWH102361

CWA28K1076J

CWA28K1162

CWA73C3808R

CWH131333

CWE041317A

CWE161010

CWE041319A

CWE06K1063

CWD041128A

CWE031083A

CWH13C1185

CWG87C900

CWG302245

CWG302246

DS461305QP-A

CWA745133

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

3

1

1

3

3

1

QTY.

3

1

1

3

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488).

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

CU-E28JKE m m m m m m m m m m m

CWB32C2714

CWT01C4685 m

CWB051018J

CWB14017 m

CWB111032 m m m m m m m m m

CWA43C2258 m m

G0C423J00001 m m m

CWA73C3809R m m m m m m m m m m m

DS461355QP-A m

REMARKS

O

O

O

O

O

O

O

O

[PHAAM] Printed in Malaysia

SSYW0812 - 00

106

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