Panasonic CS-E12RB4UW, CS-E18RB4UW, CU-E12RB4U, CU-E18RB4U service manual

Order No: PAPAMY1503095CE

TEM P

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TIMER

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1

2 C

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Air Conditioner

Indoor Unit Outdoor Unit CS-E12RB4UW CS-E18RB4UW

CU-E12RB4U CU-E18RB4U

E S O

L C

N

E P O

N

E P O

E S O

L C

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F F / O

N

A I R

T I M

S

P

W

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E

W

R

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G

R

AUTO HEAT COOL

DRY FAN

MODE

POWERFUL/

QUIET

TIMER

123

FF

SETCHECK CLOCK RESET

FAN SPEED AIR SWING

OFF/ON

FF/ON

TEMP

AIRSWING

FANSPEED

SET

ET

3

CANCEL

CANCELONOFF

AC RC

HEC

Destination

USA

Canada

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the products dealt with in this service information by anyone else could result in serious injury or death.

WARNING

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

PRECAUTION OF LOW TEMPERATURE

TABLE OF CONTENTS

PAGE PAGE

1. Safety Precautions ............................................. 3

2. Specifications ..................................................... 5

3. Features ............................................................. 11

4. Location of Controls and Components .......... 12

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

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

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

5. Dimensions ....................................................... 13

5.1 Indoor Unit .................................................. 13

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

6. Refrigeration Cycle Diagram ........................... 15

7. Block Diagram .................................................. 16

7.1 CS-E12RB4UW CU-E12RB4U ................. 16

7.2 CS-E18RB4UW CU-E18RB4U ................. 17

8. Wiring Connection Diagram ............................ 18

8.1 Indoor Unit .................................................. 18

8.2 Outdoor Unit ............................................... 19

9. Electronic Circuit Diagram .............................. 21

9.1 Indoor Unit .................................................. 21

9.2 Outdoor Unit ............................................... 22

10. Printed Circuit Board ....................................... 24

10.1 Indoor Unit .................................................. 24

10.2 Outdoor Unit ............................................... 26

11. Installation Instruction ..................................... 29

11.1 Indoor Unit .................................................. 29

11.2 Outdoor Unit ............................................... 35

12. Operation Control ............................................. 40

14.2 Cooling Only Operation

(Single connection Only, Multi connection

please refer to Multi outdoor manual) .........52

14.3 Remote Control Button ...............................53

14.4 Outdoor PCB Test Run Operation

(For Pump Down/Servicing Purpose) .........54

15. Troubleshooting Guide ....................................56

15.1 Refrigeration Cycle System ........................56

15.2 Breakdown Self Diagnosis Function ...........58

15.3 Error Codes Table ......................................59

15.4 Self-diagnosis Method ................................61

16. Disassembly and Assembly Instructions ......85

16.1 Disassembly of Parts ..................................85

16.2 Outdoor Electronic Controller Removal

Procedure ...................................................88

17. Technical Data ..................................................90

17.1 Cool Mode Performance Data ....................90

17.2 Heat Mode Performance Data ....................92

18. Service Data ......................................................93

18.1 Cool Mode Outdoor Air Temperature

Characteristic ..............................................93

18.2 Heat Mode Outdoor Air Temperature

Characteristic ..............................................95

18.3 Piping Length Correction Factor .................97

19. Exploded View and Replacement Parts

List .....................................................................99

19.1 Indoor Unit ..................................................99

19.2 CZ-BT20U (Front Grille Complete) .......... 103

19.3 Outdoor Unit ............................................ 105

12.1 Basic Function ............................................ 40

12.2 Indoor Fan Motor Operation ....................... 41

12.3 Outdoor Fan Motor Operation .................... 42

12.4 Airflow Direction .......................................... 43

12.5 Quiet Operation (Cooling Mode/Cooling

Area of Dry Mode) ...................................... 43

12.6 Quiet Operation (Heating) .......................... 44

12.7 Powerful Mode Operation ........................... 44

12.8 Timer Control .............................................. 44

12.9 Auto Restart Control ................................... 45

12.10 Indication Panel .......................................... 45

12.11 Drain Pump Control Operation ................... 45

13. Protection Control ............................................ 46

13.1 Protection Control For All Operations ......... 46

13.2 Protection Control For Cooling & Soft Dry

Operation .................................................... 48

13.3 Protection Control For Heating

Operation .................................................... 49

14. Servicing Mode ................................................. 51

14.1 Auto OFF/ON Button .................................. 51

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.

WARNING

CAUTION

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

 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.

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

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

This symbol denotes item that is PROHIBITED from doing.

WARNING

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

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

4. leakage, electrical shock or fire.

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

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

6. fire or electrical shock.

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

7. done, the set will drop and cause injury.

For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single

8. outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

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

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

Do not use joint cable for indoor / outdoor connection cable. Use the specified Indoor/Outdoor connection cable, refer to installation

10.

instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor / outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection.

Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will

11. cause heat-up or fire at the connection point of terminal, fire or electrical shock.

When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration

12. cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb

13. up to outdoor unit and cross over the handrail and causing accident.

This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and

14. 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.

Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with

16. other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.

Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the

17. flare may break and cause refrigerant gas leakage.

For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.

18.

Thickness or copper pipes used with R410A must be more than 1/32" (0.8 mm). Never use copper pipes thinner than 1/32" (0.8 mm). It is desirable that the amount of residual oil less than 0.0008 oz/ft (40 mg/10 m). During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration

19.

piping and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc).

3

WARNING

During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of compressor while compressor is

20. operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.)

After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant

21. contacts with fire.

22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when 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 described in catalog and manual.

25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc.

CAUTION

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

1. the unit, it may cause fire.

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

2. furniture.

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

3. 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.

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.

6.

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). Power supply connection to the room air conditioner. Power supply cord shall be UL listed or CSA approved 3 conductor with minimum AWG14 (for E12***) and AWG12 (for E18***) wires. Power supply point should be in an easily accessible place for power disconnection in case of emergency.

7. In some countries, permanent connection of this air conditioner to the power supply is prohibited.

Fix power supply connection to a circuit breaker for permanent connection. Use NRTL approved fuse or circuit breaker (rating refers to name plate) for permanent connection.

Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts.

8. 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.

Do not touch the sharp aluminium fins or edges of metal parts.

12.

If you are required to handle sharp parts during installation or servicing, please wear hand glove. Sharp parts may cause injury.

4

2. Specifications

Model

Performance Test Condition ARI

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 6.0 – – 5.2 –

Input Power W 250 1.15k 1.32k 250 1.15k 1.32k

Annual Consumption kWh – – – – – –

Cooling

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Heating

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Compressor

EER

Power Factor % – 92 – – 96 –

Capacity

Running Current A – 6.9 – – 6.1 –

Input Power W 230 1.36k 1.71k 230 1.36k 1.71k

COP

Power Factor % – 95 – – 97 –

Max Current (A) / Max Input Power (W) 7.80 / 1.71k

Starting Current (A) 6.9

Type Hermetic Motor (Rotary)

Motor Type Brushless (4-poles)

Output Power W 700

Indoor CS-E12RB4UW

Outdoor CU-E12RB4U

Phase, Hz Single, 60

V 208 230

kW 1.20 3.48 3.90 1.20 3.48 3.90

BTU/h 4100 11900 13300 4100 11900 13300

kcal/h (Frig./h) – – – – – –

W/W 4.80 3.03 2.95 4.80 3.03 2.95

BTU/hW 16.40 10.30 10.05 16.40 10.30 10.05

kcal/hW – – – – – –

dB-A 34 / 28 / 25 34 / 28 / 25

Power Level dB 50 / – / – 50 / – / –

dB-A 51 / – / – 51 / – / –

Power Level dB 66 / – / – 66 / – / –

kW 1.20 3.99 4.77 1.20 3.99 4.77

BTU/h 4100 13600 16300 4100 13600 16300

kcal/h (Frig./h) – – – – – –

W/W 5.22 2.93 2.79 5.22 2.93 2.79

BTU/hW 17.80 10.00 9.50 17.80 10.00 9.50

kcal/hW – – – – – –

dB-A 34 / 30 / 27 34 / 30 / 27

Power Level dB 50/ – / – 50 / – / –

dB-A 51 / – / – 51 / – / –

Power Level dB 66 / – / – 66 / – / –

5

Model

Indoor CS-E12RB4UW

Outdoor CU-E12RB4U

Type BACKWARD FAN

Material ABS

Motor Type DC / Transistor (8-poles)

Input Power W –

Output Power W 40

Cool rpm 330

Heat rpm 410

Cool rpm 370

Lo

Heat rpm 460

Cool rpm 460

Heat rpm 540

Cool rpm 560

Hi

Heat rpm 620

Cool rpm 600

Heat rpm 650

Indoor Fan

Speed

QLo

Me

SHi

Type Propeller Fan

Material PP

Motor Type DC (8-poles)

Input Power W –

Outdoor Fan

Output Power W 40

Speed Hi

Cool rpm 830

Heat rpm 820

Min Circuit Ampacity 15.0

Max. Overcurrent Protection 15.0

SEER / HSPF 18.00 / 9.00

Moisture Removal L/h (Pt/h) 1.9 (4.0)

3

/min (ft3/min) 6.7 (240)

3

/min (ft3/min) 7.3 (260)

3

/min (ft3/min) 8.8 (310)

3

/min (ft3/min) 10.5 (370)

3

/min (ft3/min) 11.2 (400)

3

/min (ft3/min) 31.0 (1095) 31.0 (1095)

Indoor Airflow

Outdoor

Airflow

QLo

Lo

Me

Hi

SHi

Hi

Cool m

Heat m3/min (ft3/min) 7.7 (270)

Cool m

Heat m3/min (ft3/min) 8.5 (300)

Cool m

Heat m3/min (ft3/min) 9.8 (350)

Cool m

Heat m3/min (ft3/min) 11.1 (390)

Cool m

Heat m3/min (ft3/min) 11.6 (410)

Cool m

Heat m3/min (ft3/min) 31.0 (1095) 31.0 (1095)

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FV50S (320)

Refrigerant Type g (oz) R410A, 980 (34.6)

Dimension

Weight

Height (I/D / O/D /

PANEL)

Width (I/D / O/D /

PANEL)

Depth (I/D / O/D /

PANEL)

Net (I/D / O/D /

PANEL)

mm (inch) 260 (10-1/4) / 540 (21-9/32) / 51 (2-1/32)

mm (inch) 575 (22-21/32) / 780 (30-23/32) / 700 (27-9/16)

mm (inch) 575 (22-21/32) / 289 (11-13/32) / 700 (27-9/16)

kg (lb) 18 (40) / 37 (82) / 2.5 (6)

6

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)

Standard length m (ft) 7.5 (24.6)

Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)

I/D & O/D Height different m (ft) 15.0 (49.2)

Piping

Additional Gas Amount g/m (oz/ft) 20 (0.2)

Length for Additional Gas m (ft) 7.5 (24.6)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil

Indoor

Operation

Range

Outdoor

Operation

Range

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).

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

Inner Diameter mm (ft) 30 (0.098)

Length mm (ft) 193 (0.633)

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row × Stage × FPI 2 × 10 × 18

Size (W × H × L) mm (ft) 1330:1270 × 210 × 25.4 (4.363:4.166 × 0.689 × 0.083)

Fin Material Aluminium (Blue Coated)

Fin Type Corrugated Fin

Row × Stage × FPI 2 × 24 × 17

Size (W × H × L) mm (ft) 36.4 × 504 × 713:684 (0.119 × 1.653 × 2.339:2.244)

Material –

Type –

Power Supply Outdoor

Thermostat Electronic Control

Protection Device Electronic Control

Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-E12RB4UW

Outdoor CU-E12RB4U

Maximum (°F/°C) 89.6/32 73.4/23

Minimum (°F/°C) 60.8/16 51.8/11

Maximum (°F/°C) 86.0/30 –/–

Minimum (°F/°C) 60.8/16 –/–

Maximum (°F/°C) 114.8/46 78.8/26

Minimum (°F/°C) 0/-17.8 –/–

Maximum (°F/°C) 75.2/24 64.4/18

Minimum (°F/°C) 5.0/-15 3.2/-16

7

Model

Performance Test Condition ARI

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 9.1 – – 7.7 –

Input Power W 250 1.70k 1.85k 250 1.70k 1.85k

Annual Consumption kWh – – – – – –

Cooling

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Heating

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Compressor

EER

Power Factor % – 90 – – 96 –

Capacity

Running Current A – 12.5 – – 10.7 –

Input Power W 270 2.34k 2.50k 270 2.34k 2.50k

COP

Power Factor % – 90 – – 95 –

Max Current (A) / Max Input Power (W) 13.7 / 3.06k

Starting Current (A) 12.5

Type Hermetic Motor (Rotary)

Motor Type Brushless (4-poles)

Output Power W 1.7k

Indoor CS-E18RB4UW

Outdoor CU-E18RB4U

Phase, Hz Single, 60

V 208 230

kW 1.17 5.13 5.47 1.17 5.13 5.47

BTU/h 4000 17500 18700 4000 17500 18700

kcal/h (Frig./h) – – – – – –

W/W 4.68 3.02 2.96 4.68 3.02 2.96

BTU/hW 16.00 10.25 10.10 16.00 10.25 10.10

kcal/hW – – – – – –

dB-A 44 / 30 / 27 44 / 30 / 27

Power Level dB 60 / – / – 60 / – / –

dB-A 51 / – / – 51 / – / –

Power Level dB 65 / – / – 65 / – / –

kW 1.29 5.97 6.15 1.29 5.97 6.15

BTU/h 4400 20400 21000 4400 20400 21000

kcal/h (Frig./h) – – – – – –

W/W 4.78 2.55 2.46 4.78 2.55 2.46

BTU/hW 16.25 8.70 8.40 16.25 8.70 8.40

kcal/hW – – – – – –

dB-A 44 / 31 / 28 44 / 31 / 28

Power Level dB 60 / – / – 60 / – / –

dB-A 52 / – / – 52 / – / –

Power Level dB 66 / – / – 66 / – / –

8

Model

Indoor CS-E18RB4UW

Outdoor CU-E18RB4U

Type BACKWARD FAN

Material ABS

Motor Type DC / Transistor (8-poles)

Input Power W –

Output Power W 40

Cool rpm 360

Heat rpm 430

Cool rpm 390

Lo

Heat rpm 450

Cool rpm 540

Heat rpm 610

Cool rpm 700

Hi

Heat rpm 770

Cool rpm 750

Heat rpm 820

Indoor Fan

Speed

QLo

Me

SHi

Type Propeller Fan

Material PP

Motor Type DC (8-poles)

Input Power W –

Outdoor Fan

Output Power W 60

Speed Hi

Cool rpm 700

Heat rpm 700

Min Circuit Ampacity 20.0

Max. Overcurrent Protection 25.0

SEER / HSPF 17.50 / 8.50

Moisture Removal L/h (Pt/h) 2.9 (6.1)

3

/min (ft3/min) 7.1 (250)

3

/min (ft3/min) 7.6 (270)

3

/min (ft3/min) 10.1 (355)

3

/min (ft3/min) 12.8 (450)

3

/min (ft3/min) 13.6 (480)

3

/min (ft3/min) 54.5 (1925) 54.5 (1925)

Indoor Airflow

Outdoor

Airflow

QLo

Lo

Me

Hi

SHi

Hi

Cool m

Heat m3/min (ft3/min) 8.3 (290)

Cool m

Heat m3/min (ft3/min) 8.7 (310)

Cool m

Heat m3/min (ft3/min) 11.3 (400)

Cool m

Heat m3/min (ft3/min) 14.0 (495)

Cool m

Heat m3/min (ft3/min) 14.8 (520)

Cool m

Heat m3/min (ft3/min) 54.5 (1925) 54.5 (1925)

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FV50S (800)

Refrigerant Type g (oz) R410A, 1.60k (56.5)

Dimension

Weight

Height (I/D / O/D /

PANEL)

Width (I/D / O/D /

PANEL)

Depth (I/D / O/D /

PANEL)

Net (I/D / O/D) /

PANEL

mm (inch) 260 (10-1/4) / 795 (31-5/16) / 51 (2-1/32)

mm (inch) 575 (22-21/32) / 875 (34-15/32) / 700 (27-9/16)

mm (inch) 575 (22-21/32) / 320 (12-5/8) / 700 (27-9/16)

kg (lb) 18 (40) / 60 (132) / 2.5 (6)

9

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)

Standard length m (ft) 7.5 (24.6)

Length range (min – max) m (ft) 3 (9.8) ~ 30.5 (100.0)

I/D & O/D Height different m (ft) 15.0 (49.2)

Piping

Additional Gas Amount g/m (oz/ft) 25 (0.3)

Length for Additional Gas m (ft) 10.0 (32.8)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil

Indoor

Operation

Range

Outdoor

Operation

Range

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).

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

Inner Diameter mm (ft) 30 (0.098)

Length mm (ft) 193 (0.633)

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row × Stage × FPI 2 × 10 × 18

Size (W × H × L) mm (ft) 1330:1270 × 210 × 25.4 (4.363:4.166 × 0.689 × 0.083)

Fin Material Aluminium (Blue Coated)

Fin Type Corrugated Fin

Row × Stage × FPI 2 × 36 × 19

Size (W × H × L) mm (ft) 36.4 × 756 × 868.6:897 (0.119 × 2.480 × 2.849:2.942)

Material –

Type –

Power Supply Outdoor

Thermostat Electronic Control

Protection Device Electronic Control

Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-E18RB4UW

Outdoor CU-E18RB4U

Maximum (°F/°C) 89.6/32 73.4/23

Minimum (°F/°C) 60.8/16 51.8/11

Maximum (°F/°C) 86.0/30 –/–

Minimum (°F/°C) 60.8/16 –/–

Maximum (°F/°C) 114.8/46 78.8/26

Minimum (°F/°C) 0/-17.8 –/–

Maximum (°F/°C) 75.2/24 64.4/18

Minimum (°F/°C) 5.0/-15 3.2/-16

10

3. Features

 Inverter Technology

o Wider output power range o Energy saving o Quick Cooling o Quick Heating o More precise temperature control

 Environment Protection

o Non-ozone depletion substances refrigerant (R410A)

 Long Installation Piping

o CS-E12RB4UW, CU-E12RB4U long piping up to 20 meters (65.6 ft) o CS-E18RB4UW, CU-E18RB4U long piping up to 30.5 meters (100.0 ft)

 Easy to use remote control

 Quality Improvement

o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect compressor o Noise prevention during soft dry operation o Blue coated condenser for high resistance to corrosion

 Operation Improvement

o Quiet mode to reduce the indoor unit operating sound o Powerful mode to reach the desired room temperature quickly o 24-hour timer setting

 Serviceability Improvement

o Breakdown Self Diagnosis function

11

4. Location of Controls and Components

r

A

T

E

M

P

O

N

T

I

M

E

R

S

C

L

O

N

2

3

C

K

4.1 Indoor Unit

E S O

L

Airflow direction louver

Air filter

4.2 Outdoor Unit

N

E P O

E S O

L C

Intake grille

C

N

E P O

Air inlet (side)

A I R

T I M

P

S

E

O

W

R

W

I N

E

G

O

R

F F / O N

Air inlet (rear)

Control Panel

POWER (Green)

TIMER (Orange)

POWERFUL (Orange)

QUIET (Orange)

AIR SWING (Orange)

Receive

AUTO

Auto OFF/ON button

4.3 Remote Control

Operation mode

Powerful/Quiet

ir outlet

LCD display

operation

A

U

T

O

H

E

A

T

C

O

L

D

R

Y

F

A

N

M

O

D

E

P

O

W

E

R

F

U

L

/

Q

U

I

E

T

F

A

T

I

M

E

R

O

N

1

O

F

S

E

T

C

H

E

C

K

C

L

O

F

A

N

S

P

E

D

A

I

R

S

W

I

N

G

O

F

/

O

N

OFF/ON

T

E

M

P

A

I

R

S

W

N

S

P

E

D

S

E

T

2

3

C

A

N

C

E

L

A

C

R

C

K

R

E

S

E

T

Temperature setting

I

N

G

Airflow direction adjustment

Fan speed selection

Timer setting

Clock setting

12

5. Dimensions

TEM

P

O

N

TIMER

S

CANCEL

O

N

O

123

CHEC

K

)

5.1 Indoor Unit

30 (1-3/16

90 (3-35/64)

190 (7-31/64)

Gas piping

575 (22-21/32)

73 (2-7/8)

575 (22-21/32)

530 (20-55/64) (Hanging bolt)

650 (25-19/32) (Ceiling opening)

44 (1-47/64)

Liquid piping

Drain pipe

Air Intel

60 (2-23/64)60 (2-23/64)

142 (5-19/32)

60 (2-23/64)60 (2-23/64)

530 (20-55/64) (Hanging bolt)

650 (25-19/32) (Ceiling opening)

47 (1-17/32)

FAN

AUTO

SPEED

HEAT

AIR

COOL

SWING

DRY

FAN

OFF/ON

FF/

MODE

TEMP

AIRSWING

POWERFUL/

FAN SP EE D

QUIET

TIMER

SET

123

FF

SETCHECK CLOCK RESET

ET

CANCELONOFF

AC

RC

134 (5-9/32)

22 (55/64)

61 (2-13/32)

51 (2-1/64)

260 (10-1/4)

25 (63/64)

100 (3-15/16)

151 (5-15/16)

700 (27-9/16)

Unit:mm(inch)

13

5.2 Outdoor Unit

5.2.1 CU-E12RB4U

Space necessary for

installation

10 cm (3-7/8)

24.4 (1)

(104.7

(4-1/8))

780 (30-23/32)

570 (22-1/2)

104.9

(4-1/8)

67.6

(2-5/8)

60.5

(2-3/8)

34.5 (1-3/8)

10 cm (3-7/8)

100 cm (39-3/8)

Anchor Bolt Pitch

320 (12-5/8) x 570 (22-1/2)

Unit : mm (inch)

5.2.2 CU-E18RB4U

Space necessary for

installation

10 cm (3-7/8)

100 cm (39-3/8)

Anchor Bolt Pitch

360.5 (14-3/16) x 613 (24-9/64)

27.5

(1-5/64)

(131

(5-5/32))

875 (34-15/32)

613 (24-1/8)

131

(5-5/32)

70

(2-3/4)

84.8 (3-3/8)

155

(6-1/8)

2-way valve at Liquid side (High Pressure)

3-way valve at Gas side (Low Pressure)

11. 5 (1/2)

540 (21-9/32 )

(61.6

(2-3/8))

(18

(3/4))

(69.6

(2-3/4))

38 (1-1/2)

82

(3-7/32)

152

(5-31/32)

360.5 (14-3/16)

289 (11-13/32)

795 (31-5/16)

59

(2-5/16)

320 (12-5/8)

64

(2-17/32)

75

70

(2-61/64)

(25

(2-3/4)

(31/32))

3-way valve at Gas side (Low Pressure)

Unit : mm (inch)

2-way valve at Liquid side (High Pressure)

14

6. Refrigeration Cycle Diagram

DOORO

UTDOO

R

HEA

TIN

G

IN

INTAKE

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

PIPE

TEMP.

SENSOR 1

PIPE

(INLET)

TEMP.

SENSOR 2

LIQUID

SIDE

2-WAY VALVE

GAS

SIDE

3-WAY VALVE

MUFFLER/ RECEIVER

EXPANSION

VALV E

TEMP.

SENSOR

HEAT EXCHANGER

(CONDENSER)

MUFFLER

STRAINER

AIR

4-WAY VALVE

PIPE

TEMP.

SENSOR

COMPRESSOR

TEMP.

SENSOR

COMPRESSOR

COOLING

HEATER

15

7. Block Diagram

7.1 CS-E12RB4UW CU-E12RB4U

Q1

3~

MS

COMPRESSOR

FAN MOTOR

FUSE103

M

RY-C

C101

M

SC

EXPANSION

REACTOR

PTC

PTC1

PTC2

RY-AC1

(OUTDOOR UNIT)(INDOOR UNIT)

VALV E

NTC

TH2

U

RY-HT2

FUSE102

RY-PWR

SINGLE

PHASE

POWER

SUPPLY

FUSE101

1

FAN

MOTOR

FUSE

SC

PUMP

DRAIN

VALV E

4-WAYS

HEATER

CT102

NOISE FILTER

2

3

16

7.2 CS-E18RB4UW CU-E18RB4U

3~

MS

V

U

W

NTC

PTC1

TH2

P

N

M

FUSE1

DB3

Q1

DB1

REACTOR

CT400

PTC2

FUSE2

RY-PWR1

RY-C

VALV E

4-WAYS

RY-HOT

CR3

HEATER

SC

TH1

NTC

DB2

NOISE FILTER

FUSE 3

(OUTDOOR UNIT)

L

N

(INDOOR UNIT)

SINGLE PHASE

POWER SUPPLY

123

FUSE

FAN

MOTOR

SC

PUMP

DRAIN

17

8. Wiring Connection Diagram

TRANS

F

E

TOOU

T

U

NIT

T

8.1 Indoor Unit

MOTOR

M

1

Y

P

R

O

BR

1

POYRBR

OR

MO

R

ORM

51

M

BL

YYR

R

(WHT)

CN-STM1

(YLW)

CN-STM2

15

5

(WHT)

CN-CNT 1

T-BL K2 T-BLK1

2

1

(YLW)

CN-T2

1

CN-T1

RECTIFICATION

2

(WHT)

RECTIFICATION

5

HIGH STATIC

CIRCUIT

INTAKE AIR TEMPERATURE SENSOR

PRESSURE

(FAN)

FLOAT

SWITCH

INDOOR PIPE

TEMPERATURE

SENSOR 2

INDOOR PIPE

TEMPERATURE

SENSOR 1

BL

t˚

BLBLBL

4

CN-TH1

SW02

DRAIN PUMP

TEST RUN

t˚

BL

(WHT)

1

CN-DRMTR1

110

CN-DISP(WHT)

(BLU)

13

BR

BR R R B B WYYW

M

REMOTE CONTROLLER

10

CN-DISP(WHT)

ELECTRONIC

CONTROLLER(DISPLAY)

1

AUTO SW

~

1

DRAIN PUMP

t˚

P

BL

4

1

(BLU)

CN-TH2

SW01

ELECTRONIC CONTROLLER (MAIN)

CN-FM

765

Y

B

MOTOR

(WHT)

W

BL

M

CIRCUIT

RECTIFICATION

4

1

R

REMARKS

B:BLUE P:PINK

BR:BROWN O:ORANGE

BL:BLACK Y:YELLOW

CIRCUIT

NOISE FILTER

FUSE01

T3.15A L250V

G01(GRN)

G

W:WHITE GR:GRAY

R:RED G:GREEN

Y/G:YELLOW/GREEN

AC01(BLK)

AC02(WHT)

W

BL

1

TERMINAL

BOARD

CIRCUIT

COMMUNICATION

AC03(RED)

R

Y/G

2

3

DOOR

18

8.2 Outdoor Unit

R

B

W

R

Y

B

O

Y

OWE

8.2.1 CU-E12RB4U

EMARKS; LACK; (BLK) LUE; (BLU)

ED; (RED)

ELLOW; (YLW) GRAY; (GRY) GREEN; (GRN)

ROWN; (BRW)

RANGE; (ORG)

ELLOW/GREEN; (YLW/GRN)

Resistance of Compressor Windings

Note: Resistance at 20°C of ambient temperature.

RSUPPLY

P

YLW/GRN

HITE; (WHT)

HEATER

ORG

L1

L2

BLK

ORG

ELECTRONIC CONTROLLER

HT2(ORG)

TO INDOOR UNIT

1

(

)

BLACK

(WHITE)

BLK

MOTOR

ACL(BRW)

WHT

GRN

FAN

RY-HT2

2

WHT

GRN

M

CN-HT1

CN-HT2

BRW

3

(RED)

RED

DATA (

AC-BLK (BLK)

FUSE101

20A 250V

AC–WHT (WHT)

FG1 (GRN)

LJP101 (GRN)

1 4

CN-DCFM

7

HT2 (ORG)

1

CN4

5

1

CN5

5

ACL(BRW)

TERMINAL BOARD

)

RED

COMMUNICATION

CIRCUIT

NOISE FILTER

(WHT)

CIRCUIT

GRY

REACTOR

RAT2 (GRY)

FUSE102

T3.15A L250V

RECTIFICATION

CIRCUIT

SWITCHING

POWER SUPPLY

CIRCUIT

ELECTRO-MAGNETIC

COIL (EXPANSION VALVE)

GRY

RAT1 (GRY)

FUSE103

T3.15A L250V

1

RECTIFICATION

CIRCUIT

M

CN–STM

(WHT)

PFC

Q1

P

N

6

CN–TH (WHT)

CN–TANK

(WHT)

CN–HOT

(WHT)

(

U

(

V

(

W

YELLOW (YLW)

BLUE (BLU)

(TRADEMARK)

COMPRESSOR TERMINAL

THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER

AIR TEMP. SENSOR (THERMISTOR)

1

t°

2 3

t°

4

PIPING TEMP. SENSOR (THERMISTOR)

COMPRESSOR TEMP. SENSOR (THERMISTOR)

1

t°

3

YLW

RED BLU YLW

1 2

) )

)

YLW

RED BLU YLW

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

RED (RED)

MS

~

3

COMPRESSOR

ELECTRONIC CONTROLLER

MODEL CU-E12RB4U

CONNECTION 5RS102XHA21

U-V 1.741 Ω

U-W 1.711 Ω

V-W 1.765 Ω

19

8.2.2 CU-E18RB4U

TOIN

DOORUNIT

R

(EX

PAN

SINGLE PHASE POWER SUPPLY

AC 208-230V 60Hz

GRN

RED

(RED)

L1

YLW/GRN

GRN

YLW/GRN

YELLOW (YLW)

BLUE

(BLU)

(TRADEMARK)

COMP. TERM INAL

THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER

L2

(WHITE)

FG1 (GREEN)

TERMINAL BOARD

WHT

BLK

WHT

ACL1

ACN1

(BLACK)

FUSE3

(25A, 250V)

COMMUNICATION

NOISE FILTER

CIRCUIT

ELECTRONIC CONTROLLER (NOISE FILTER)

REMARKS BLU : BLUE BRW: BROWN ORG: ORANGE BLK : BLACK YLW: YELLOW WHT : WHITE GRY : GRAY RED : RED GRN: GREEN YLW/GRN : YELLOW/GREEN

BLK

CIRCUIT

COM3 (RED)

TERMINAL BOARD

CN-COM

(YELLOW)

CN-BLK (BLACK)

CN-WHT (WHITE)

123

RED

WHT

1

WHT WHT WHT

4

BLK

WHT

ELECTRO-MAGNETIC COIL

1

CN-COM (YELLOW)

4

AC-BLK

(BLACK)

AC-WHT (WHITE)

6

(T3.15A L250V)

CN-EV

(WHITE)

M

SIONVALVE)

Resistance of Compressor Windings

MODEL CU-E18RB4U

CONNECTION 5KD240XAF21

U-V 0.720 Ω

U-W 0.726 Ω

V-W 0.708 Ω

Note: Resistance at 20°C of ambient temperature.

GRY

L2-1

(GRAY)

FUSE2

1

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

REACTOR

2 2

CN-HOT (BLUE)

RY-HOT

BLK

1 1

BLK

L2-O (BLACK)

RECTIFICATION

CIRCUIT

RECTIFICATION

CIRCUIT

CN-TANK

3

t°

COMP. TEMP. SENSOR (THERMISTOR)

PFC

CIRCUIT

SWITCHING POWER

(WHITE)

13

ELECTRONIC CONTROLLER (MAIN)

Q10

P

N

FUSE1

(T3.15A L250V)

SUPPLY CIRCUIT

RY-HT

PIPING TEMP. SENSOR (THERMISTOR)

4

t°

U V W

CN-TH1 (WHITE)

t°

(RED) U

(BLUE) V

(YELLOW) W

(WHITE)

CN-HT

(BLACK)

OUTDOOR AIR TEMP. SENSOR (THERMISTOR)

CN-FM

1

RED BLU YLW YLW

RED

1 4

BLK

WHT

BLU

7

YLW

HEATER

1

3

33

1

RED BLU

1

FAN MOTOR

COMPRESSO

MS

~

3

M

20

9. Electronic Circuit Diagram

RANSFORME

R

UTDOORUN

M

R

TEMP

O

N

TIMER

S

CANCEL

O

N

O

123

CHEC

K

9.1 Indoor Unit

Y

MOTOR

B W BL

M

R

G

TERMINAL BOARD

1

IT

2 3

TO O

BL

W

R

Y/G

ELECTRONIC CONTROLLER (MAIN)

7

CN-FM

6

(WHT)

5

4

1

G01(GRN)

FUSE01

T3.15A L250V

AC01(BLK)

AC02(WHT)

AC03(RED)

Sensor (Thermistor)

Characteristics

70

1

60

2

50

40

2

30

Resistance (k )

20

10

0

-10 (14)0(32)10(50)

RECTIFICATION

CIRCUIT

NOISE FILTER

CIRCUIT

COMMUNICATION

CIRCUIT

Pipe temp.Sensor

Intake Air Temp. Sensor

1

20 (68)30(86)40(104)50(122)

Temperature°C (°F)

R

CN-T1

1

(WHT)

RECTIFICATION

CIRCUIT

REMOTE CONTROLLER

AUTO

HEAT COOL

DRY FAN

MODE

POWERFUL/

TIMER

SET CHECKCLOCK R ESET

T

2

DRAIN PUMP

OFF/ON

FF/

TEMP

QUIET

FANSPEED

ON

123

FF

OFF

CN-T2 (YLW)

RECTIFICATION

M

1

~

AIRSWING

SET

CANCEL

AC

CIRCUIT

13

FAN SPEED AIR SWING

ET

RC

BL

YYR

1

2

CN-DRMTR1

(BLU)

CN-CNT

T-BL K1

T-BL K2

CN-DISP(WHT)

ELECTRONIC CONTROLLER

(DISPLAY)

1

(WHT)

BR

BR R R B B WYYW

1

OTO

M

51

HIGH STATIC PRESSURE

POYRBR

(FAN)

SW01

Auto

1

Power

Timer

Powerful

Quiet Air Swing

5V

C30

R13

12V

8

16

1

SSR02

15

2

SSR01

14

3

13

4

12

5

11

6

10

7

12V

9

5V

R56

10k

R57

1k

5V

SW201

3

CN-STM1

8

(WHT)

16

1 2 3 4 5 6 7

IC05IC07

C29

1000p

C04

1

R31

20.0k

1

BR

15 14 13 12 11 10

12V

9

R55

10k

C31

0.01

R54

1k

R33

15.0k

C05

1

C43

R75

CN-TH1

1 R O

M

Y P

5

5V

DRAIN PUMP TEST RUN

SW02

INTAKE AIR TEMPERATURESENSOR (15k 3950)

5V

BL

4

BL

t˚

P

BL

P

BL

1

CN-TH2

(BLU)

5V

4

BL

t˚

BL BL

t˚

1

(WHT)

MOTOR

FLOAT SWITCH

INDOOR PIPE TEMPERATURE SENSOR 2 (20k 3950)

INDOOR PIPE TEMPERATURE SENSOR 1 (20k 3950)

CN-STM2

12V

R202

C202

(YLW)

5V

110

10

5V

R203

10k

47

+

C201 47 F

(NHG)

15

CN-DISP(WHT)

5V

IC201 Vout 1 Vout 2

GND 3

5V

R201

1k

BZ201

BZ

D201

D202

D203

D204 D205

5

21

9.2 Outdoor Unit

P

OWERSUPPL

Y

9.2.1 CU-E12RB4U

TO INDOOR UNIT

1

(

BLACK

BLK

FAN

MOTOR

BRW

GRN

)

(WHITE)

2

WHT

M

RY-HT1

RY-HT2

(RED)

GRN

CN-HT1

CN-HT2

HEATER

ORG

L1

YLW/GRN

ORG

ELECTRONIC CONTROLLER

HT2(ORG)

ACL(BRW)

L2

BLK

13V

RY-HT2

3

RED

1 2 3 4 5

AC–WHT (WHT)

CN4

CN5

TERMINAL BOARD

DATA (

RED

AC-BLK (BLK)

FUSE101

20A 250V

FG1 (GRN)

LJP101 (GRN)

1 4

CN-DCFM

(WHT)

7

HT2 (ORG)

5V

R129

1k

1

R118

2 3 4 5

13_1V

1 2 3 4 5

ACL(BRW)

)

COMMUNICATION

NOISE FILTER

5V

R130

1k

R116

CIRCUIT

16 15 14 13 12

11 10

ELECTRO-MAGNETIC

COIL (EXPANSION VALVE)

REACTOR

FUSE102

T3.15A L250V

RECTIFICATION

CIRCUIT

SWITCHING

CIRCUIT

GRY

CN–STM

RAT1

(WHT)

(GRY)

RECTIFICATION

CIRCUIT

FUSE103

T3.15A L250V

ELECTRONIC CONTROLLER

GRY

RAT2 (GRY)

9

1

IC12

2

IC12

3

IC12

POWER SUPPLY

4

IC12

5

IC12

6

IC12

7

IC12

8

M

123456

D28

D26

D27

D29

PFC

CIRCUIT

Q1

P

U V

W

N

(

RED ( (

BLU YLW

13V

) )

)

5V

CN–TH

R12

R11

C80

RED BLU YLW

15.0k

15.8k

C7

1 C6 1

5V

C3

R1

1

4.99k

D19

MS

3

AIR TEMP. SENSOR

(WHT)

(THERMISTOR)

1 2 3

4

CN–TANK

COMPRESSOR TEMP. SENSOR

(WHT)

(THERMISTOR)

1

3

CN–HOT

(WHT)

1

2

~

t°

PIPING TEMP. SENSOR (THERMISTOR)

t°

YLW

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

YLW

COMPRESSOR

70

60

50

40

30

Resistance (k )

20

10

0

Sensor (Thermistor)

Characteristics

1

Outdoor Air Sensor

2

Outdoor Heat Exchanger Sensor

1

2

-10

(14)0(32)10(50)

Temperature °C (°F)

20

(68)30(86)40(104)50(122)

Compressor Temp. Sensor

(Thermistor) Characteristics

70

60

50

40

30

Resistance (k )

20

10

0

20

(68)40(104)60(140)

80

100

(176)

Temperature °C (°F)

(212)

120

(248)

140

(284)

22

9.2.2 CU-E18RB4U

T

OINDO

ORU

NIT

SINGLE PHASE POWER SUPPLY

AC 208-230V 60Hz

GRN

YLW/GRN

GRN

L1

L2

WHT

ACN1

(WHITE)

NOISE FILTER

FG1 (GREEN)

CIRCUIT

TERMINAL BOARD

BLK

WHT

BLK

ACL1

COM3

(BLACK)

(RED)

5V

R425

R426

FUSE3

(25A, 250V)

COMMUNICATION

CIRCUIT

ELECTRONIC CONTROLLER (NOISE FILTER)

Q28

b

R427

Resistance (k )

c

e

G1

Sensor (Thermistor)

70

60

50

40

30

2

20

10

0

-10 (14)0(32)10(50)

Temperature °C (°F)

5V

Q25

4.7k

b

10k

Characteristics

1

OutdoorAir Sensor

2

Outdoor Heat Ex ch an ger Sensor

1

(68)30(86)40(104)50(122)

TERMINAL BOARD

CN-COM

(YELLOW)

G1

CN-WHT (WHITE)

20

CN-BLK (BLACK)

123

1

WHT WHT WHT WHT

4

BLK

WHT

RED

5

V

CN-COM

(YELLOW)

1

4

G5

AC-BLK

(BLACK)

AC-WHT (WHITE)

13V

*C84

G2

6

ELECTRO-MAGNETIC COIL

(EXPANSION VALVE)

GRY

5

V

G5

M

Resistance (k )

(GRAY)

R159

C63

FUSE2

(T3.15A L250V)

*D33 *D34 *D35 *D36

G2

CN-EV

(WHITE)

1

Compressor Temp.Sensor

(Thermistor) Characteristics

70

60

50

40

30

20

10

0

20

(68)40(104)60(140)

Temperature °C (°F)

REACTOR

2

GRY L2-1

CN-HOT (BLUE)

RY-HOT

1

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

80

100

(176)

(212)

BLK

112

BLK

L2-O (BLACK)

RECTIFICATION

CIRCUIT

RECTIFICATION

CIRCUIT

R410

C49

4.99k

1µ

G5G5

3

t°

COMP. TEMP. SENSOR (THERMISTOR) (50K 3950)

120

140

(248)

(284)

PFC

CIRCUIT

SWITCHING POWER

SUPPLY CIRCUIT

R101

15.8k

C461µC45

V

5

CN-TANK

(WHITE)

13

ELECTRONIC CONTROLLER (MAIN)

Q10

P

N

FUSE1

(T3.15A L250V)

RY-HT

5

V

R100

15.8k

1µ

G5 G5G5

PIPING TEMP. SENSOR (THERMISTOR) (4.96K 3800)

U V W

4

t°

(BLUE) V

(YELLOW) W

(BLACK)

1

t°

OUTDOOR AIR TEMP. SENSOR (THERMISTOR) (15K 3950)

(RED) U

(WHITE)

CN-HT

CN-FM

CN-TH1

(WHITE)

RED BLU YLW YLW

RED

1 4

BLK

WHT

BLU

7

YLW

HEATER

1

3

33

1

RED BLU

1

FAN MOTOR

COMPRESSOR

MS

~

3

M

23

10. Printed Circuit Board

10.1 Indoor Unit

10.1.1 Main Printed Circuit Board

CN-DRMTR1

CN-T2

CN-T1

T-BLK1 T-BLK2

CN-FM

CN-STM1

CN-STM2

SW01

SW02

CN-CNT

CN-TH1

CN-TH2

JP3 (Random Auto Restart enable/disable)

24

10.1.2 Display Printed Circuit Board

CN-DISP

25

10.2 Outdoor Unit

FG1

10.2.1 Main Printed Circuit Board

10.2.1.1 CU-E12RB4U

CN-DCFM

AC-BLK

AC-WHT

DATA

CN5

CN4

CN-STM

CN-TANK

CN-TH

CN-HOT

POWER

TRANSISTOR

(IPM)

CURRENT TRANSFORMER (CT)

26

10.2.1.2 CU-E18RB4U

CN-EV

CN-TH1

CN-TANK

CN-ACFM

CN-HT

CN-HOT

AC-BLK

AC-WHT

CURRENT

TRANSFORMER

(CT)

CN-COM

POWER TRANSISTOR (IPM)

27

10.2.2 Noise Filter Printed Circuit Board

FG1

C

10.2.2.1 CU-E18RB4U

OM3

CN-COM

ACL1

ACN1

CN-BLK

CN-WHT

28

11. Installation Instruction

11.1 Indoor Unit

11.1.1 Selecting the Location for the Indoor Unit

Provide a check port on the piping side ceiling for repair and maintenance.  Install the indoor unit once the following conditions are satisfied and after receiving the customer approval.

1 The indoor unit must be within a maintenance space. 2 The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading

of air throughout the room.

3 Mount with the lowest moving parts at least 8 ft (2.4 m) above floor or grade level.

"

16

11

19

39 (1000)

(Unit: inch (mm))

or more

Obstacles

3

/8"

"

8

/

1

96"–118

(2400 – 3000)

Floor

(500) or more

/16"

1911/16" (500) or more

11

19 (500) or more

* If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is

decreased.

4 The installation position must be able to support a load four times the indoor unit weight.

5 The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance. 6 The indoor unit must allow easy draining. 7 The indoor unit must allow easy connection to the outdoor unit. 8 Place the indoor unit according to the height from the ceiling shown in the illustration below. 9 The indoor unit must be from at least 9.8 ft (3 m) away from any noise-generating equipment. The electrical

wiring must be shielded with a steel conduit. 10 If the power supply is subject to noise generation, add a suppressor. 11 Do not install the indoor unit in a laundry. Electric shocks may result.

Note

 Thoroughly study the following installation locations

1 In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo

fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying,

dispersing of water drops, drain pump malfunction, etc.

In these cases, take the following actions:

o Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so

that it draws oily steam which should not flow into the suction of the air conditioner.

o Make enough distance from the cooking room to install the air conditioner in such place where it may not

suck in oily steam.

Air conditioner

/

13

/16"

11

(300) or less

(Unit: inch (mm))

Ensure ample

distance

2 Avoid installing the air conditioner in such

circumstances where cutting oil mist or iron

powder exist especially in factories, etc. 3 Avoid places where inflammable gas is

generated, flows-in, contaminated, or leaked. 4 Avoid places where sulphurous acid gas or

corrosive gas can be generated. 5 Avoid places near high frequency generators.

Cooking table

29

Use the ventilation fan for smokecollection hood with sufficient capacity.

collectionhoodwithsufficientcapacity.

Model Name Height in the ceiling

E12*** E18***

11" (280 mm) or

more

11.1.2 Installation of Indoor Unit

n

nch

H

andab

e

piping

This air conditioner uses a drain up motor. Horizontally install the unit using a level gauge.

CEILING OPENING DIMENSIONS AND BOLT LOCATION

The paper model for installation expand or shrink according to temperature and humidity. Check on dimensions before using it.

During the installation, care must be taken

Caution

not to damage electric wires.

 The dimensions of the paper model for installation

are the same as those of the ceiling opening dimensions.

 Be sure to discuss the ceiling drilling work with the

workers concerned.

POSITIONS OF AIR CONDITIONER BODY AND CEILING SURFACE

angingbolt

(W3/8 or M10)

Nut (W3/8 or M10)

M10Springwasher

Keep the length of the bolt from

the bracket to 1

Flat washer for M10 (accessory)

HANGING

9

/16" (40 mm)

Ceiling

259/16" (650) (Ceiling opening)

23/8"

(60)

(Hanging bolt)

2213/16" (580)

Air conditioner body

7

/8" (530)

20

(Unit size)

(U

" (580)

16

/

13

(Unit size)

22

Refrigerant pipe

"

16

/

7

4

(113 mm)

2

it: i

(60)

3

/8"

1

23/8"

(60)

7

"

8

/

11

" (530)

8

/

20

3

(282 mm)

(mm))

Drain pipe

(Hanging bolt)

" (650) (Ceiling opening)

16

/

9

25

"

8

/

(60)

" (292 mm)

2

/

1

11

ov

Flat washer for M10

Warning

(accessory)

Nut (W3/8 or M10)

Adjust to the same height

Tighten the nut and bolt to prevent unit from falling

Paper model for installation

Set screw for paper model (4 pieces)

Open the ceiling board along the outer edge of the paper model.

11.1.3 Refrigerant Piping

Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit. (Additional charging, etc.)

1 Brazing for piping.

a. Execute brazing before tightening the flare

nut.

b. Brazing must be executed while blowing

nitrogen gas. (This prevents generation of oxidized scale in copper pipe.)

2 When there is a lot of brazings for long piping,

install a strainer midway of the piping. (The strainer is locally supplied.)

3 Use clean copper pipe with inner wall surface

free from mist and dust. Blow nitrogen gas or air to blow off dust in the pipe before connection.

4 Form the piping according to its routing. Avoid

bending and bending back the same piping point more than three times. (This will result in hardening of the pipe).

5 After deforming the pipe, align centers of the

union fitting of the indoor unit and the piping, and tighten them firmly with wrenches.

6 Connect pipe to the service valve or ball valve

which is located below the outdoor unit.

7 After completed the piping connection, be sure to check if there is gas leakage in indoor and outdoor

connection.

Union

Red mark

Con• rm the red mark of the union (thin side)

•

is always at lower direction after connecting

.

30