Panasonic CS-E18HKEA, CS-E21HKEA, CU-E18HKEA, CU-E21HKEA Service Manual

Order No. MAC0801007C8

Air Conditioner

Indoor Unit Outdoor Unit

CS-E18HKEA CU-E18HKEA CS-E21HKEA CU-E21HKEA

1 Safety Precautions----------------------------------------------- 3 2 Specifications ----------------------------------------------------- 5

2.1. CS-E18HKEA CU-E18HKEA--------------------------5

2.2. CS-E21HKEA CU-E21HKEA--------------------------7

3Features------------------------------------------------------------- 9 4 Location of Controls and Components ------------------10

4.1. Indoor Unit--------------------------------------------------10

4.2. Outdoor Unit -----------------------------------------------10

4.3. Remote Control -------------------------------------------10

5Dimensions--------------------------------------------------------11

5.1. Indoor Unit & Remote Control-------------------------11

5.2. Outdoor Unit -----------------------------------------------12

6 Refrigeration Cycle Diagram --------------------------------13 7 Block Diagram----------------------------------------------------14 8 Wiring Connection Diagram ---------------------------------15

8.1. Indoor Unit--------------------------------------------------15

8.2. Outdoor Unit -----------------------------------------------16

PAGE PAGE

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

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

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

10 Printed Circuit Board ------------------------------------------19

10.1. Indoor Unit-------------------------------------------------19

10.2. Outdoor Unit----------------------------------------------- 21

11 Installation Instruction ---------------------------------------- 22

11.1. Select The Best Location ------------------------------22

11.2. Indoor/Outdoor Unit Installation Diagram ---------- 22

11.3. Indoor Unit -------------------------------------------------23

11.4. Outdoor Unit-----------------------------------------------26

12 Operation and Control ----------------------------------------28

12.1. Basic Function--------------------------------------------28

12.2. Airflow Direction------------------------------------------30

12.3. Quiet operation (Cooling Mode/Cooling area of Soft Dry Mode) ---------------------------------------- 31

12.4. Powerful Mode Operation------------------------------ 32

12.5. Timer Control----------------------------------------------33

12.6. Auto Restart Control-------------------------------------33

12.7. Indication Panel-------------------------------------------33

12.8. Ion Operation----------------------------------------------34

13 Protection Control----------------------------------------------35

13.1. Protection Control For All Operations---------------35

13.2. Protection Control For Cooling & Soft Dry Operation---------------------------------------------------36

13.3. Protection Control For Heating Operation --------- 38

14 Servicing Mode --------------------------------------------------39

14.1. Auto OFF/ON Button------------------------------------ 39

14.2. Select Remote Control Transmission Code------- 39

14.3. Remote Control Button ---------------------------------40

15 Troubleshoo ting Guide----------------------------------------41

15.1. Refrigeration Cycle System ---------------------------41

15.2. Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current------------------------------------------------------42

15.3. Breakdown Self Diagnosis Function ----------------43

15.4. Error Codes Table----------------------------------------44

16 Disassembly and Assembly Instructions---------------45

16.1. Indoor Electronic Controllers and Control Board--------------------------------------------------------45

16.2. Indoor Cross Flow Fan and Fan Motor-------------47

17 Technical Data----------------------------------------------------49

17.1. Operation Characteristics------------------------------49

17.2. Sensible Capacity Chart--------------------------------57

18 Exploded View and Replacement Parts List-----------58

18.1. CS-E18HKEA CS-E21HKEA-------------------------58

18.2. CU-E18HKEA CU-E21HKEA ------------------------61

1 Safety Precautions

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

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

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

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

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

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

This symbol denotes item that is PROHIBITED from doing.

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

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

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

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

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

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

6. This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (E LCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.

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

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

9. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle. Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosive and injury.

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

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

12. When connecting the piping, do not allow air or any substances other than the specified refrigerant to enter the refrigeration cycle. Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and possibly result in explosion and injury.

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

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

15. It is desirable that the amount of residual oil is less than 40 mg/10m. Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

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

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

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

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°F - 70°F (30°C - 40°C) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C). Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).

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

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

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

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

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

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

2 Specifications

2.1. CS-E18HKEA CU-E18HKEA

ITEM UNIT INDOOR UNIT OUTDOOR UNIT

Performance Test Condition EUROVENT

Capacity

O O

EER

I N G

Noise Level

Capacity

E A T

COP

I N G

Noise Level

Moisture Removal

Q-Lo

Air Volume

Refrigeration Control Device — Expansion Valve Refrigeration Oil Refrigerant (R410A) g (oz) — 1.18k (41.7)

Dimension

Net Weight kg (lbs) 11 (24) 49 (108) Pipe Diameter Standard Length m (ft) 5.0 (16.4)

Pipe Length Range m (ft) 3 (9.8) ~ 20 (65.6) Height Difference m (ft) 15 (49.2) Additional Gas Amount g/m (oz/ft) 20 (0.2) Refrigeration Charge Less m (ft) 10 (32.8)

Drain Hose

Compressor

SHi

Height mm (inch) 275 (10-27/32) 750 (29-17/32) Width mm (inch) 998 (39-5/16) 875 (34-15/32) Depth mm (inch) 230 (9-1/16) 345 (13-19/32)

Gas mm (inch) 12.7 (1/2) Liquid mm (inch) 6.35 (1/4)

Inner Diameter mm 12 —

Length mm 650 — Type — Hermetic Motor Motor Type — Brushless (4-pole) Rated Output W — 900

kW 5.30 (0.90 ~ 6.00) BTU/h 18100 (3070 ~ 20500) kCal/h 4560 (770 ~ 5160)

W/W 3.21 (4.19 ~ 2.93)

kcal/hW 2.76 (3.58 ~ 2.52)

dB (A) Hi: 44, Lo:37, Q-Lo: 34 Hi: 47

Power level dB Hi: 57, Lo:50, Q-Lo: 47 Hi: 60

kW 6.60 (0.90 ~ 8.00) BTU/h 22500 (3070 ~ 27300) kCal/h 5680 (770 ~ 6880)

W/W 3.69 (3.67 ~ 3.02)

kcal/hW 3.17 (3.14 ~ 2.60)

dB (A) Hi: 44, Lo:37, Q-Lo: 34 Hi: 47

Power level dB Hi: 57, Lo:50, Q-Lo: 47 Hi: 60

l/h 2.9

pt/h 6.1

/min (ft3/min)

Cooling; 12.11 (428) Heating; 13.20 (466) Cooling; 12.90 (457) Heating; 13.92 (492) Cooling; 14.08 (497) Heating; 15.29 (540) Cooling; 15.20 (540) Cooling; 40.0 (1410) Heating; 16.70 (590) Heating; 40.0 (1410) Cooling; 16.03 (566) Heating; 17.29 (616)

— RB68A or Freol Alpha68M (400)

—

ITEM UNIT INDOOR UNIT OUTDOOR UNIT

Type Cross-Flow Fan Propeller Fan

Material ASHT-18 PP Motor Type Transistor (8-pole) Transistor (8-pole) Input Power W 68 62.1

Fan

Heat Exchanger

Air Filter

Output Power W 30 40

Q-Lo (Cool/Heat) rpm 1080 / 1170 — Lo (Cool/Heat) rpm 1170 / 1240 —

Fan Speed

Fin Material Aluminium (Pre Coat) Aluminium Fin Type Slit Fin Corrugated Fin Row x Stage x FPI 2 x 15 x 19 2 x 34 x 18

Size (W x H x L) mm 610 x 315 x 25.4 Material P.P.Honeycomb —

Type One-Touch —

Me (Cool/Heat) rpm 1310 / 1410 — Hi (Cool/Heat) rpm 1450 / 1580 660 / 640 SHi (Cool/Heat) rpm 1540 / 1640 —

36.4 x 714 x 803 831

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

2. Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)

Item Unit

øSingle

Power Source (Phase, Voltage, Cycle)

Input Power W

Starting Current A 8.3

Running Current A

Maximum Current A 11.9

Power Factor %

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

Power Cord

Thermostat Electronic Control Protection Device Electronic Control

Number of core Length m 1.9

V 230

Hz 50

Cooling; 1.65k (215 ~ 2.05k) Heating; 1.79k (245 ~ 2.65k)

Cooling; 7.5 Heating; 8.1

Cooling; 96 Heating; 96

3 (1.5mm

Note

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

)

2.2. CS-E21HKEA CU-E21HKEA

ITEM UNIT INDOOR UNIT OUTDOOR UNIT

Performance Test Condition EUROVENT

Capacity

O O

EER

I N G

Noise Level

Capacity

E A T

COP

I N G

Noise Level

Moisture Removal

Q-Lo

Air Volume

Refrigeration Control Device — Expansion Valve Refrigeration Oil Refrigerant (R410A) g (oz) — 1.29k (45.5)

Height mm (inch) 275 (10-27/32) 750 (29-17/32)

Dimension

Width mm (inch) 998 (39-5/16) 875 (34-15/32) Depth mm (inch) 230 (9-1/16) 345 (13-19/32)

Net Weight kg (lbs) 11 (24) 51 (112) Pipe Diameter

Gas mm (inch) 12.7 (1/2)

Liquid mm (inch) 6.35 (1/4) Standard Length m (ft) 5.0 (16.4) Pipe Length Range m (ft) 3 (9.8) ~ 20 (65.6) Height Difference m (ft) 15 (49.2) Additional Gas Amount g/m (oz/ft) 20 (0.2) Refrigeration Charge Less m (ft) 10 (32.8)

Drain Hose

Inner Diameter mm 12 —

Length mm 650 —

Type — Hermetic Motor

Compressor

Motor Type — Brushless (4-pole) Rated Output W — 900

kW 6.30 (0.90 ~ 7.10) BTU/h 21500 (3070 ~ 24200) kCal/h 5420 (770 ~ 6110)

W/W 2.85 (4.19 ~ 2.80)

kcal/hW 2.45 (3.58 ~ 2.41)

dB (A) Hi: 45, Lo:37, Q-Lo: 34 Hi: 48

Power level dB Hi: 58, Lo:50, Q-Lo: 47 Hi: 61

kW 7.20 (0.90 ~ 8.50) BTU/h 24600 (3070 ~ 29000) kCal/h 6190 (770 ~ 7310)

W/W 3.43 (3.67 ~ 3.09)

kcal/hW 2.95 (3.14 ~ 2.66)

dB (A) Hi: 45, Lo:37, Q-Lo: 34 Hi: 49

Power level dB Hi: 58, Lo:50, Q-Lo: 47 Hi: 62

l/h 3.5

pt/h 7.4

/min (ft3/min)

Cooling; 12.60 (444) Heating; 13.53 (478) Cooling; 13.21 (467) Heating; 14.24 (503) Cooling; 14.73 (520) Heating; 15.75 (556)

—

Cooling; 16.2 (570) Cooling; 42.8 (1510)

Heating; 17.3 (610) Heating; 41.5 (1460) Cooling; 17.21 (608) Heating; 17.95 (634)

—

— RB68A or Freol Alpha68M (400)

ITEM UNIT INDOOR UNIT OUTDOOR UNIT

Type Cross-Flow Fan Propeller Fan

Material ASHT-18 PP Motor Type Transistor (8-pole) Transistor (8-pole) Input Power W 68 74.8

Fan

Heat Exchanger

Air Filter

Output Power W 30 40

Q-Lo (Cool/Heat) rpm 1100 / 1190 — Lo (Cool/Heat) rpm 1170 / 1270 —

Fan Speed

Fin Material Aluminium (Pre Coat) Aluminium Fin Type Slit Fin Corrugated Fin Row x Stage x FPI 2 x 15 x 19 2 x 34 x 18

Size (W x H x L) mm 610 x 315 x 25.4 Material P.P.Honeycomb —

Type One-Touch —

Me (Cool/Heat) rpm 1345/ 1440 — Hi (Cool/Heat) rpm 1520 / 1610 700 / 680 SHi (Cool/Heat) rpm 1630 / 1690 —

36.4 x 714 x 823 851

2. Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)

Item Unit

øSingle

Power Source (Phase, Voltage, Cycle)

Input Power W

Starting Current A 9.7

Running Current A

Maximum Current A 12.6

Power Factor %

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

Power Cord

Thermostat Electronic Control Protection Device Electronic Control

Number of core Length m 1.9

V 230

Hz 50

Cooling; 2.21k (215 ~ 2.54k) Heating; 2.10k (245 ~ 2.75k)

Cooling; 9.9 Heating; 9.3

Cooling; 97 Heating; 98

3 (1.5mm

Note

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

)

3 Features

• Inverter Technology

- Wider output power range

- Energy saving

- Quick Cooling

- Quick Heating

- More precise temperature control

• Supersonic Air Purifying System with Super Alleru-Buster

- Inactive various harmful airborne elements including allergens, viruses and bacteria. Generated superso nic waves enhance the ability to collect dust and dirt in the air.

• Ion Mode

- Provides fresh air effect by producing negative ion.

• Environment Protection

- Non-ozone depletion substances refrigerant (R410A)

• Long Installation Piping

- Long piping up to 20 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

4 Location of Controls and Components

4.1. Indoor Unit

4.2. Outdoor Unit

4.3. Remote Control

5 Dimensions

5.1. Indoor Unit & Remote Control

5.2. Outdoor Unit

6 Refrigeration Cycle Diagram

Piping size Rated

Model Gas Liquid

E18HKEA,

E21HKEA

1/2” 1/4” 5 10 15 3 20 20

Length

(m)

Common

Length

(m)

Max

Elevation

(m)

Min.

Piping

Length

(m)

Max.

Piping

Length

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

Additional

Refrigerant

(g/m)

(m)

7 Block Diagram

8 Wiring Connection Diagram

8.1. Indoor Unit

8.2. Outdoor Unit

9 Electronic Circuit Diagram

9.1. Indoor Unit

9.2. Outdoor Unit

10 Printed Circuit Board

10.1. Indoor Unit

10.1.1. Main Printed Circuit Board

10.1.2. Power Printed Circuit Board

10.1.3. Indicator Printed Circuit Board

10.2. Outdoor Unit

10.2.1. Main Printed Circuit Board

11 Installation Instruction

11.1. Select The Best Location

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 a rrows from the wall, ce iling, fence or other obstacles.

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

OUTDOOR UNIT

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

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

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

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

• If piping length is over 10 m, additional re frigerant shou ld be added as shown in the table.

11.2. Indoor/Outdoor Unit Installation

Diagram

Additional

(m)

Max.

Piping

Length

(m)

Refrigerant

(g/m)

Model

E18HK E21HK

Piping size Rated

Length

Gas Liquid

1/2” 1/4” 5 15 3 20 20

(m)

Max

Elevation

(m)

Min.

Piping

Length

Example : For E18HKEA If the unit is installed at 12.5 m distance, the quantity of

additional refrigerant should be 50 g ...... (12.5 - 10) m x 20 g/m

= 50 g.

11.3. Indoor Unit

1 1 .3.1. HOW TO FIX INSTALLATION PLATE

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

The centre of installation plate should be at more than 550 mm at right and left of the wall. The distance from installation plate edge to ceiling should more than 67 mm. From installation plate left edge to unit’s left side is 47 mm. From installation plate right edge to unit’s right is 73 mm.

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

126 mm from this line.

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

174 mm from this line.

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

984 mm from this line.

11.3.2. TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

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

Caution

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

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

1. Mount the installation plate on the wall with 5 screws or more. (If mounting the unit on the concrete wall consider using anchor bolts.)

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

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

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

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

11.3.3. INDOOR UNIT INSTALLATION

1. For the right rear piping

2. For the right and right bottom piping

3. For the embedded piping

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

11.3.4. CONNECT THE CABLE TO THE INDOOR UNIT

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

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

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

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

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

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

11.3.4.1. Wire Stripping and Connecting Requirement

11.4. Outdoor Unit

11.4.1. INSTALL THE OUTDOOR UNIT

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

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

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

11.4.2. CONNECTING THE PIPING

Connecting The Piping To Indoor Unit

Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the co pper pipe (in case of using long piping).

Connect the piping

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

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

Model Piping size (Torque)

Gas Liquid

E18HK, E21HK 1/2” [55 N

m] 1/4” [18 Nlm)

CAUTION

Do not over tighten, over tightening cause gas leakage.

Connecting The Piping To Outdoor Unit

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare n ut (locate at valve) onto the copper pipe. Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.

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.

11.4.3. EVACUATION OF THE EQUIPMENT

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

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

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

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

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

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

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure tha t the needle in the gauge does not move after approximately five minutes. Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

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

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

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.

m with a torque wrench.

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.

11.4.4. CONNECT THE CABLE TO THE OUTDOOR UNIT

(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT)

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

2. Connecting cable between indoor unit and outdoor unit sha ll be approved polychloroprene sheathed 4 × 1.5 mm cord, type designation 245 IEC 57 or heavier cord.

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

4. Attache the control board cover back to the original position with the screw.

5. For wire stripping and connection requirement, refer to instruction 11.3.4. of indoor unit.

flexible

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 performi ng 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 an d the operation environment. The fi nal 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°C.

• 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 Temperate < -2.0°C.

• 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 Temperate > +2.0°C.

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

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°C, T2 will decreased by 3°C and T3 will decreased up to 8°C. The Auto Operation Mode shifting will take place whenever operation mode changed from Cooling/So ft 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 O O O O O

Tab (rpm) Hi Me+ Me Me- Lo

[Heating]

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

Remote Control O O O O O

Tab (rpm) Shi Me+ Me Me- Lo

ii. 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.

[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 seco nds, 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 compresso r 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

Operation Mode Airflow Direction Vane Angle (°)

12345

Heating Auto with Heat Exchanger A 8

B57

Temperature C 8

Manual 8 25 41 58 74

Cooling and Ion Auto 10 ~ 38

Manual 10 14 19 23 27

Soft Dry Auto 10 ~ 38

Manual 10 17 24 31 38

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 va ne 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 remo te 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 Vane Angle (°) Heating, with heat exchanger temperature Cooling and Soft Dry 68 ~ 112

A68 ~ 112 B90

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.

Pattern 12345 Airflow Direction

Patterns at Remote Control

Vane Angle (°)906879101112

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

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 w ill shift higher up to 3.5°C (for Heating) or lower up to 2°C (for Cooling/Soft Dry) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.

12.5. Timer Control

12.5.1. 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-) a nd 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.

12.5.2. OFF Timer Control

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

12.6. 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) a fter power supply resumes.

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

12.7. Indication Panel

LED POWER TIMER QUIET POWERFUL ION

Color Green Orange Orange Green Green Blue

Light ON Operation ON Timer Setting ON Quiet Mode ON Powerful Mode ON Ion Mode ON Operation ON

Light OFF Operation OFF Timer Setting OFF Quiet Mode OFF Powerful Mode OFF Ion Mode OFF Operation 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 Ion LED is blinking, there is an abnormality of Ion occurs.

ALLERGEN

BUSTER

12.8. Ion Operation

Purpose

To provide fresh air effect to users by discharging minus ion to air.

Control Condition

a. Ionizer Only Operation.

1. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at remote control is pressed. Fan & ionizer on, ION LED illuminates, but power LED maintain off. (1 → 2) However, fan speed can be adjusted later by customer during this operation.

Airflow direction (Horizontal Vane) control: Follow vane direction control at cooling mode. Horizontal vane can be changed by customer during ion only operation.

b. Operation Mode + Ionizer Operation.

1. Ionising Operation Start Condition When air conditioner unit is in “ON” condition (Heat, Cool, Soft Dry, Auto mode) and ION operation button at remote control is pressed. Ionizer on & ION LED illuminates. (3 → 4) Power LED also illuminates.

2. Ionising Operation Stop Condition When one of the following condition is satisfied, ION operation stops.

a. Stopped by ON/OFF switch. b. Timer OFF activates. c. ION feedback signal shows error.

3. Ionizer operation status is not memorised by micon. After OFF, when operation is “ON” again, air conditioner operates without ionizer operation.

13 Protection Control

13.1. Protection Control For All Operations

13.1.1. Restart Control (Time Delay Safety Control)

• The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period.

• This control is not applicable if the power supply is cut off and on again.

• This phenomenon is to balance the pressure inside the refrigerant cycle.

13.1.2. 30 Seconds Forced Operation

• Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.

• The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and return back to the outdoor 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.

E18HK E21HK

Operation Mode X (A) Y (A) X (A) Y (A) Cooling/Soft Dry (A) 8.8 15.0 11.0 15.0 Cooling/Soft Dry (B) 7.7 15.0 9.6 15.0 Heating 10.8 17.0 11.5 17.0

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

13.1.4. IPM (Power transistor) Prevention Control

A. Overheating Prevention Control

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

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

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, operatio n 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 withi n 30 seco nds a fter 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.

13.1.5. Compressor Overheating Prevention Control

Instructed frequency for compressor operation will be regulated by compressor di scharge temperature. The changes of frequency are as below figure. If compressor discharge temperature exceeds 112°C, compressor will be stop, occurs 4 times per 20 minutes, timer LED will be blinking (“F97” is to be confirmed).

13.2. Protection Control For Cooling & Soft Dry Operation

13.2.1. Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. Compressor frequency will adjust base on Outdoor Air Temperature.

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°C.

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

13.2.3. Dew Prevention Control 1

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

2. This control activated if:

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

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

3. This control stopped if:

• Compressor stopped.

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

• Outdoor air temperature and indoor intake temperature changed.

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

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

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

Operation Mode Airflow Direction Vane Angle (°)

12345

Cooling and Ion Auto 10 ~ 27

Manual 10 13 16 19 22

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°C and 29°C.

• Outdoor air temperature is less than 30°C.

• Quiet Lo fan speed.

3. This control stopped if:

• When receive air swing change signal from Remote Control.

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

13.2.5. Freeze Prevention Control

1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating.

2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 10°C.

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 10°C for 5 minutes, the fan speed will return to its normal operation.

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°C or above.

13.3.2. Outdoor Air Temperature Control

The maximum current value is regulated when the outdoor air temperature rises above 14°C 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. If the heat exchanger temperature exceeds 60°C, compressor will stop.

13.3.4. Cold Draught Operation

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

13.3.5. Deice Operation

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

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 cooling operation. Within 5 minutes after cooling o peration start, the Auto OFF/ON button is pressed for more than 5 seconds. A 3 “beep” so unds will occur a t the fifth seconds, i n o rder 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 tha n 11 seco nds (3 “beep” sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition) and press any button at remote control to transmit and store the desired transmission code to the EEPROM.

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

4. REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activa ted i f the Auto OFF/ON button i s pressed co ntinuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Recei ving Sound Off/On Mode is in standby condition) and press “AC Reset” button and th en press “Check” button at remote control.

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

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

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

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

14.2. Select Remote Control Transmission Code

• There are 4 types of remote control transmission code could be selected and sto red in EEPROM of indoor unit. Th e indoor unit will only operate when received signal with same transmission code from remote control. This could prevent sig nal 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.

14.3. Remote Control Button

14.3.1. SET BUTTON

• To check current remote control transmission code

- Press for more than 10 seconds.

14.3.2. CLOCK BUTTON

• To change the remote control’s time format

- Press for more than 5 seconds.

14.3.3. RESET (RC)

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

- Press once to clear the memory.

Remote Control Printed Circuit Board

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

Short Open A (Default)

Open Open B

Short Short C

Open Short D

14.3.4. RESET (AC)

• To restore the unit’s setting to factory default

- Press once to restore the unit’s setting.

14.3.5. TIMER

• To change indoor unit indicator’s LED intensity

- Press continuously for 5 seconds.

14.3.6. TIMER

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

- Press continuously for 10 seconds.

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.

15.2. Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current

Cooling Mode Heating Mode

Condition of the

air conditioner Low Pressure 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

Low Pressure High Pressure Electric current

during operation

Inefficient compression

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

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 wil l 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.)

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.

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.

• To clear memorized error (Protective operation) status

after repair:

1. Turn power on (in standby condition).

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 Operation Temporary items

H23 Cooling

H27, H28 Cooling, Heating

H26 Cooling, Heating

Emergency Operation with limited power

Emergency Operation without power limit

15.4. Error Codes Table

Diagnosis

display

H00 No abnormality detected — Normal operation — H11 Indoor / outdoor abnormal

H14 Indoor intake air temperature sensor

H15 Outdoor compressor temperature sensor

H16 Outdoor Current Transformer open

H19 Indoor fan motor merchanism lock — — • Indoor PCB

H23 Indoor heat exchanger temperature

H24 Indoor heat exchanger temperature

H26 Ion abnormality — — • Indoor PCB

H27 Outdoor air temperature sensor

H28 Outdoor heat exchanger temperature

H30 Discharge temperature sensor

H33 Indoor/Outdoor wrong connection — — • Indoor/Outdoor supply voltage H38 Indoor/Outdoor mismatch — — — H97 Outdoor Fan Motor lock abnormality 2 times occurrence

H98 Indoor high pressure protection — — • Air filter dirty

H99 Indoor heat exchanger anti-freezing

F11 Cooling / Heating cycle changeover

F90 PFC control 4 times occurrence

F91 Refrigeration cycle abnormality 2 times occurrence

F93 Outdoor compressor abnormal revolution 4 times occurrence

F95 Cool high pressure protection 4 times occurrence

F96 IPM (power transistor) overheating

F97 Outdoor compressor overheating

F98 Total running current protection 3 times occurrence

F99 Outdoor Direct Current (DC) peak

Abnormality / Protection control

communication

abnormality

circuit

sensor abnormality

sensor 2 abnormality

abnormality

sensor abnormality

abnormality

protection

abnormality

protection

detection

Abnormality

Judgement

> 1 min. after starting operation

Continue for 5 sec. — • Intake air temperature sensor

Continue for 5 sec. — • Compressor temperature sensor

— — • Outdoor PCB

Continue for 5 sec. O

Continue for 5 sec. — • Heat exchanger temperature sensor 2

Continue for 5 sec. O • Outdoor temperature sensor (defective

Continue for 5 sec. O • Outdoor heat exchanger temperature

Continue for 5 sec. — • Discharge temperature sensor

within 30 minutes

— — • Insufficient refrigerant

4 times occurrence within 30 minutes

within 10 minutes

within 20 minutes

— — • Excess refrigerant

4 times occurrence within 20 minutes

within 20 minutes 7 times occurrence

continuously

Emergency

operation

Indoor fan operation

only

(Cooling only)

— • Outdoor PCB

—•4-way valve

— • Voltage at PFC

— • No refrigerant

— • Outdoor compressor

— • Outdoor refrigerant circuit

— • Insufficient refrigerant

— • Excess refrigerant

— • Outdoor PCB

Primary location to verify

• Internal / external cable connections

• Indoor / Outdoor PCB

(defective or disconnected)

• IPM (Power transistor) module

• Fan motor

• Heat exchanger temperature sensor (defective or disconnected)

(defective or disconnected)

•Ion

or disconnected)

sensor (defective or disconnected)

• Outdoor Fan Motor

• Air circulation short circuit

• Air filter dirty

•V-coil

(3-way valve is closed)

• Improper heat radiation

• IPM (Power transistor)

• Compressor

• Improper heat radiation

• 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 op eration 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.

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 tis caution may result in electric shocks.

16.1. Indoor Electronic Controllers and Control Board

16.2. Indoor Cross Flow Fan and Fan Motor

17 Technical Data

17.1. Operation Characteristics

17.1.1. CS-E18HKEA CU-E18HKEA

505152

17.1.2. CS-E21HKEA CU-E21HKEA

545556

17.2. Sensible Capacity Chart

CS-E18HKEA CU-E18HKEA

Indoor wet bulb temp.

17.0°C 5.26 3.99 1.51 4.91 3.82 1.63 4.57 3.67 1.74 4.16 3.49 1.88

19.0°C 5.30 1.65

19.5°C 5.77 4.17 1.54 5.40 4.01 1.66 5.02 3.86 1.77 4.56 3.67 1.91

22.0°C 6.29 4.33 1.57 5.88 4.16 1.69 5.47 4.01 1.80 4.97 3.83 1.95

TC SHC IP TC SHC IP TC SHC IP TC SHC IP

CS-E21HKEA CU-E21HKEA

Indoor wet bulb temp.

17.0°C 6.25 4.74 2.02 5.84 4.54 2.18 5.43 4.37 2.33 4.94 4.15 2.51

19.0°C 6.30 2.21

19.5°C 6.86 4.96 2.06 6.41 4.77 2.22 5.97 4.59 2.37 5.42 4.37 2.56

22.0°C 7.48 5.14 2.10 6.99 4.95 2.26 6.50 4.77 2.42 5.91 4.55 2.61

TC - Total Cooling Capacity (kW) Indoor 27°C/19°C SHC - Sensible Heat Capacity (kW) Outdoor 35°C/24°C IP - Input Power (kW)

TC SHC IP TC SHC IP TC SHC IP TC SHC IP

30 35 40 46

Outdoor Temp. (°C)

18 Exploded View and Replacement Parts List

18.1. CS-E18HKEA CS-E21HKEA

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.

<Model: CS-E18HKEA, CS-E21HKEA>

REF NO. PART NAME & DESCRIPTION QTY. CS-E18HKEA CS-E21HKEA REMARKS

1 CHASSY COMPLETE 1 CWD50C1382 ← 2 FAN MOTOR 1 CWA981149CB ← O 3 CROSS FLOW FAN COMPLETE 1 CWH02C1010 ← 4 SCREW - CROSS FLOW FAN 1 CWH551146 ← 5 BEARING ASS’Y 1 CWH64K007 ← 6 EVAPORATOR 1 CWB30C1859 ← 7 FLARE NUT (1/4”) 1 CWT251030 ← 8 FLARE NUT (1/2”) 1 CWT251032 ←

9 HOLDER SENSOR 1 CWH32143 ← 10 DISCHARGE GRILLE COMPLETE 1 CWE20C2441 ← 11 VERTICAL VANE 15 CWE241088 ← 12 CONNECTING BAR 1 CWE261025 ← 13 AIR SWING MOTOR 1 CWA98260+MJ ← O

13a LEAD WIRE - AIR SWING MOTOR 1 CWA67C3849 ←

14 AIR SWING MOTOR 1 CWA98K1008 ← O 15 LEAD WIRE - AIR SWING MOTOR 1 CWA67C4445 ← 16 HORIZONTAL VANE 1 CWE241152A ← 17 HORIZONTAL VANE 1 CWE241153A ← 18 CAP - DRAIN TRAY 1 CWH521096 ← 19 BACK COVER CHASSIS 1 CWD932162B ← 20 CONTROL BOARD CASING 1 CWH102334 ← 21 TERMINAL BOARD COMPLETE 1 CWA28C2305 ← O 22 POWER SUPPLY CORD 1 CWA20C2493 ← 23 ELECTRONIC CONTROLLER - MAIN 1 CWA73C3248 CWA73C3249 O 24 INDICATOR COMPLETE 1 CWE39C1116 ← O 25 INDICATOR HOLDER 1 CWD932435 ← 26 INDICATOR HOLDER 1 CWD932436 ← 27 SENSOR COMPLETE 1 CWA50C2322 ← O 28 CONTROL BOARD TOP COVER 1 CWH131209 ← 29 CONTROL BOARD FRONT COVER 1 CWH131210 ← 30 REMOTE CONTROL COMPLETE 1 CWA75C3192 ← O 31 FRONT GRILLE COMPLETE 1 CWE11C3974 ← O 32 INTAKE GRILLE COMPLETE 1 CWE22C1159 ← O 33 GRILLE DOOR 1 CWE141076 ← 34 AIR FILTER (L) 1 CWD001137 ← 35 AIR FILTER (R) 1 CWD001138 ← 36 SCREW - FRONT GRILLE 3 XTT4+16CFJ ← 37 CAP - FRONT GRILLE 3 CWH521062A ← 38 DRAIN HOSE 1 CWH851063 ← 39 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C067 ← 40 INSTALLATION PLATE 1 CWH36K1007 ← 41 FULCRUM 2 CWH621047 ← 42 ELECTRONIC CONTROLLER - IONIZER 1 CWA743675 ← 43 CASING - IONIZER 1 CWD932464 ← 44 CASING - IONIZER 1 CWD932527 ← 45 ION - GENERATOR 1 CWH94C0001 ← 46 SUPERSONIC AIR PURIFYING DEVICE 1 CWH91C1013 ← 47 ELECTRONIC CONTROLLER SUPERSONIC 1 CWA743874 ← 48 SUPER ALLERU BUSTER FILTER 1 CWD00C1133 ← 49 FRAME FOR AIR FILTER SUPERSONIC 1 CWD011027 ← 50 FRAME FOR AIR FILTER SUPERSONIC 1 CWD011026 ← 51 ELECTRONIC CONTROLLER - POWER 1 CWA745229 ← O 52 OPERATING INSTRUCTION 1 CWF565939 ←

53 OPERATING INSTRUCTION 1 CWF565940 ← 54 INSTALLATION INSTRUCTION 1 CWF613423 ← 55 INSTALLATION INSTRUCTION 1 CWF613424 ← 56 INSTALLATION INSTRUCTION 1 CWF613425 ← 57 INSTALLATION INSTRUCTION 1 CWF613426 ←

(Note)

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

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

18.2. CU-E18HKEA CU-E21HKEA

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.

<Model: CU-E18HKEA CU-E21HKEA>

REF. NO. DESCRIPTION & NAME QTY. CU-E18HKEA CU-E21HKEA REMARKS

1 CHASSY ASS’Y 1 CWD50K2085 2 ANTI-VIBRATION BUSHING 3 CWH50077 3 COMPRESSOR 1 5CS130XAE04 4 NUT-COMPRESSOR MOUNT 3 CWH56000J 5 SOUND PROOF MATERIAL 1 CWG302302 6 FAN MOTOR BRACKET 1 CWD541054 7 FAN MOTOR 1 CWA981166J 8 SCREW - FAN MOTOR BRACKET 2 CWH551217

9 SCREW - FAN MOTOR MOUNT 3 CWH551106J 10 PROPELLER FAN ASSY 1 CWH03K1016 11 NUT - PROPELLER FAN 1 CWH56053J 12 CONDENSER COMPLETE 1 CWB32C2451 CWB32C2487 14 TUBE ASS’Y (EXP. VALVE) 1 CWT023679 15 4 WAYS VALVE 1 CWB001026J 16 STRAINER 1 CWB11094 18 HOLDER - COUPLING 1 CWH351056 19 3 WAYS VALVE (GAS) 1 CWB011361 20 2 WAYS VALVE (LIQUID) 1 CWB021292 22 SOUND PROOF BOARD 1 CWH151050 23 TERMINAL COVER 1 CWH171039A 24 NUT-TERMINAL COVER 1 CWH7080300J 25 SENSOR COMPLETE (COMP. TOP) 1 CWA50C2185 26 HOLDER SENSOR 1 CWMH320001 27 V-COIL COMPLETE (4-WAYS VALVE) 1 CWA43C2168J 28 V-COIL COMPLETE (EXPAND VALVE) 1 CWA43C2058J 29 SENSOR COMPLETE (COMP. DISC.) 1 CWA50C2180 30 SENSOR COMPLETE 1 CWA50C2181 31 REACTOR 1 CWA421069 32 CONTROL BOARD CASING (SIDE) 1 CWH102273 33 TERMINAL BOARD ASSY 1 CWA28K1036J 34 FUSE HOLDERS 1 K3GB1PH00016 35 FUSE 1 K5D303BBA002 37 CONTROL BOARD CASING (BOTTOM) 1 CWH102282 38 ELECTRONIC CONTROLLER - MAIN 1 CWA73C3256R CWA73C3257R O 40 CONTROL BOARD COVER (TOP) 1 CWH131167 41 CABINET SIDE PLATE (LEFT) 1 CWE041255A CWE041082A 42 HANDLE 1 CWE161010 43 CABINET SIDE PLATE (RIGHT) 1 CWE041158A 44 HANDLE 2 CWE16000E 45 CABINET FRONT PLATE CO. 1 CWE06K1043 46 WIRE NET 1 CWD041041A 47 CABINET TOP PLATE 1 CWE031031A 48 CONTROL BOARD COVER (BOTTOM) 1 CWH131168 49 CONTROL BOARD COVER (TOP) 1 CWH131169A 56 DRAIN HOSE 1 CWH5850080 57 PACKING 1 CWB81012 58 SOUND PROOF MATERIAL 1 CWG302270 59 SOUND PROOF MATERIAL 1 CWG302300 64 OIL SEPARATOR ASS’Y 1 — CWB16K1008 65 TUBE ASS’Y (CAP.TUBE) 1 — CWT022997 66 HEATER 1 CWA341039 67 ACCUMULATOR 1 CWB131024 68 RECEIVER 1 CWB14011 —

←

O O

(Note)

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

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

[PHAAM] Printed in Malaysia

SSYW0801 - 00

Panasonic CS-E18HKEA, CS-E21HKEA, CU-E18HKEA, CU-E21HKEA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Order No. MAC0801007C8

Air Conditioner

TABLE OF CONTENTS

PAGE PAGE

REF. NO. DESCRIPTION & NAME QTY. CU-E18HKEA CU-E21HKEA REMARKS