Panasonic CS-E9SD3UAW, CS-E12SD3UAW, CS-E18SD3UAW, CU-E9SD3UA, CU-E12SD3UA service manual

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Order No: PAPAMY1604052CE

Indoor Unit Outdoor Unit

CS-E9SD3UAW CS-E12SD3UAW CS-E18SD3UAW

CU-E9SD3UA CU-E12SD3UA CU-E18SD3UA

Destination

USA

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 product or products dealt with in this service information by anyone else could result in serious injury or death.

PRECAUTION OF LOW TEMPERATURE

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

WARNING

TABLE OF CONTENTS

PAGE PAGE

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

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

3. Features ............................................................. 14

4. Location of Controls and Components .......... 15

4.1 Indoor Unit .................................................. 15

4.2 Outdoor Unit ............................................... 15

4.3 Remote Control .......................................... 15

5. Dimensions ....................................................... 16

5.1 Indoor Unit .................................................. 16

5.2 Outdoor Unit ............................................... 17

6. Refrigeration Cycle Diagram ........................... 18

6.1 CS-E9SD3UAW CU-E9SD3UA .................. 18

6.2 CS-E12SD3UAW CU-E12SD3UA .............. 19

6.3 CS-E18SD3UAW CU-E18SD3UA .............. 20

7. Block Diagram .................................................. 21

7.1 CS-E9SD3UAW CU-E9SD3UA

CS-E12SD3UAW CU-E12SD3UA .............. 21

7.2 CS-E18SD3UAW CU-E18SD3UA .............. 22

8. Wiring Connection Diagram ............................ 23

8.1 Indoor Unit .................................................. 23

8.2 Outdoor Unit ............................................... 24

9. Electronic Circuit Diagram .............................. 26

9.1 Indoor Unit .................................................. 26

9.2 Outdoor Unit ............................................... 27

10. Printed Circuit Board ....................................... 29

10.1 Indoor Unit .................................................. 29

10.2 Outdoor Unit ............................................... 30

11. Installation Instruction ..................................... 33

11.1 Indoor Unit .................................................. 35

11.2 Outdoor Unit ............................................... 43

12. Operation and Control ..................................... 48

12.1 Basic Function ............................................ 48

12.2 Quiet Operation (Cooling Mode/Cooling

Area of Soft Dry Mode) ............................... 51

12.3 Powerful Mode Operation ........................... 52

12.4 Timer Control .............................................. 52

12.5 Auto Restart Control ................................... 52

12.6 Indication Panel .......................................... 52

12.7 Electric Heater Control 1 ............................ 53

12.8 Electric Heater Control 2 ............................ 54

14.1 TEST RUN OPERATION (FOR PUMP

DOWN/SERVICING PURPOSE) ...............60

14.2 Auto OFF/ON Button ..................................61

14.3 Cooling Only Operation (Single connection Only, Multi connection please refer to Multi

outdoor manual) .........................................62

14.4 Remote Controller Room Temperature

Thermoshift Control ....................................63

15. Troubleshooting Guide ....................................67

15.1 Refrigeration Cycle System ........................67

15.2 Relationship Between the Condition of the Air Conditioner and Pressure and Electric

Current ........................................................68

15.3 Breakdown Self Diagnosis Function ...........69

15.4 Error Codes Table ......................................70

15.5 Self-diagnosis Method ................................72

16. Disassembly and Assembly Instructions ......96

16.1 Indoor Electronic Controller, Blower Fan, Fan Motor & Drain Motor Removal



16.2 Outdoor Electronic Controller Removal

17. Technical Data ............................................... 101

17.1 Technical data provided are based on the

17.2 Technical data provided are based on the

17.3 Fan Performance ..................................... 107

18. Service Data ................................................... 110

18.1 Cool Mode Outdoor Air Temperature

18.2 Heat Mode Outdoor Air Temperature

18.3 Piping Length Correction Factor .............. 116

19. Exploded View and Replacement Parts



19.1 Indoor Unit ............................................... 118

19.2 Outdoor Unit ............................................ 120

Procedure. ..................................................96

Procedure ...................................................99

air conditioner running under free

frequency. ................................................ 101

air conditioner running under rated

frequency. ................................................ 104

Characteristic ........................................... 110

Characteristic ........................................... 113

List .................................................................. 118



13. Protection Control ............................................ 55

13.1 Protection Control For All Operations ......... 55

13.2 Protection Control For Cooling & Soft Dry

Operation .................................................... 56

13.3 Protection Control for Heating

Operation .................................................... 58

14. Servicing Mode ................................................. 60



1. Safety Precautions

 Read the following “SAFETY PRECAUTIONS” carefully before installation.  Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit

for the model to be 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 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 running to confirm that no abnormality occurs after the installation. 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.

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

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

Symbol with white background denotes item that is PROHIBITED.

Symbol with dark background denotes item that must be carried out.

WARNING

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

1. may climb up to outdoor unit and cross over the handrail causing an accident.

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

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

3. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.

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

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

6. Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.

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

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

8. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.

 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.

 Thickness for 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).

Engage authorized dealer or specialist for installation. If installation done by the user is incorrect, it will cause water leakage, electrical

10. shock or fire.

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

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

12. 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

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

For installation work, follow all electrical, building, plumbing, local codes, regulations and these installation instructions. If electrical circuit

14. capacity is not enough or a defect is found in electrical work, it will cause electrical shock or fire.

Do not use spliced wires for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to instruction

15.

CONNECT THE CABLE TO THE INDOOR/OUTDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will have impact on the terminal. If connection 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

16. cause fire or electrical shock.

This equipment must installed with an Earth Leakage Circuit Breaker (ELCB) or Ground Fault Current Interrupter (GFCI) or Appliance

17.

Leakage Current Interrupter (ALCI) that has been certified by an NRTL Certified Testing Agency and that is suitable for the voltages and amperages involved. Otherwise, if may cause electrical shock and fire in case of equipment breakdown.

During installation, install the refrigerant piping properly before running the compressor. Operation of compressor without fixing

18.

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

During pump down operation, stop the compressor before removing the refrigeration piping. Removal of refrigeration piping while

19.

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

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

20. may break and cause refrigerant gas leakage.

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

21. contact with fire.

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

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

23. Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.

CAUTION

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

1. of the unit, it may cause fire.

Do not release refrigerant during piping work for installation, re-installation and during repairing a refrigeration parts. Take care

2. of the liquid refrigerant, it may cause frostbite.

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

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

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

5. furniture.

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

Power supply connection to the room air conditioner. Power supply cord shall be UL listed or CSA approved 3 conductor with minimum AWG14 (E9SD3UAW, E12SD3UAW) and AWG12 (E18SD3UAW) wires.

Power supply point should be in an easily accessible place for power disconnection in case of emergency. 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.

Installation work.

8. It may take two people to carry out the installation work.

2. Specifications

MODEL

Performance Test Condition ARI

Power Supply

Capacity

Running Current A - 3.6 - - 3.2 -

Input Power W 250 690 850 250 690 850

EER

Cooling

Heating

Power Factor % - 92 - - 94 -

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Capacity

Running Current A - 5.7 - - 5.1 -

Input Power W 200 1.12k 1.50k 200 1.12k 1.50k

COP

Power Factor % - 96 - - 97 -

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Min Circuit Ampacity 15.00

Max. Overcurrent Protection 15.00

Max Current (A) / Max Input Power (W) 7.0 / 1.57k

Starting Current (A) 5.70

SEER/HSPF 20.50 / 10.00

INDOOR CS-E9SD3UAW

OUTDOOR CU-E9SD3UA

Phase, Hz Single, 60

V 208 230

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

kW 1.20 2.64 3.00 1.20 2.64 3.00

BTU/h 4100 9000 10200 4100 9000 10200

W/W 4.80 3.82 3.53 4.80 3.82 3.53

BTU/hW 16.40 13.00 12.00 16.40 13.00 12.00

dB-A 35 / 28 / 25 35 / 28 / 25

Power Level dB 51 / - / - 51 / - / -

dB-A 48 / - / - 48 / - / -

Power Level dB 63 / - / - 63 / - / -

kW 1.20 3.51 4.14 1.20 3.51 4.14

BTU/h 4100 12000 14100 4100 12000 14100

W/W 6.00 3.12 2.76 6.00 3.12 2.76

BTU/hW 20.50 10.70 9.40 20.50 10.70 9.40

dB-A 35 / 28 / 25 35 / 28 / 25

Power Level dB 51 / - / - 51 / - / -

dB-A 50 / - / - 50 / - / -

Power Level dB 65 / - / - 65 / - / -

MODEL

INDOOR

OUTDOOR CU-E9SD3UA

CS-E9SD3U

Type Hermetic Motor / Rotary

Compressor

Motor Type Brushless (4-poles)

Output Power 700

Type Sirocco

Material GFZ010A / GF20

Motor Type DC Motor (8-poles)

Output Power W 51

Cool rpm

Heat rpm 800

Cool rpm 940

Heat rpm 880

Cool rpm

1120

Heat rpm 1090

Cool rpm

1300

Heat rpm 1300

Cool rpm

Heat rpm

1380

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan

Material PP

Motor Type DC Motor (8-poles)

Output Power W 40

Outdoor Fan

Speed Hi

Cool rpm 830

Heat rpm 780

Moisture Removal L/h (Pt/h) 0.6 (1.3)

QLo

Indoor Airflow

SHi

Outdoor Airflow Hi

Cool m

Heat m3/min (ft3/min) 8.50 (300)

Cool m

Heat m3/min (ft3/min) 9.30 (328)

Cool m

Heat m3/min (ft3/min) 11.40 (403)

Cool m

Heat m3/min (ft3/min) 13.50 (475)

Cool m

Heat m3/min (ft3/min) 14.30 (505)

Cool m

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

/min (ft3/min) 9.30 (328)

/min (ft3/min) 9.90 (350)

/min (ft3/min) 11.70 (413)

/min (ft3/min) 13.50 (475)

/min (ft3/min) 14.30 (505)

/min (ft3/min) 31.0 (1095)

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm

FV50S (320)

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

Height (I/D / O/D) mm (inch) 200 (7-7/8) / 542 (21-11/32)

Dimension

Width (I/D / O/D) mm (inch) 750 (29-17/32) / 780 (30-23/32)

Depth (I/D / O/D) mm (inch) 640 (25-7/32) / 289 (11-13/32)

Weight Net (I/D / O/D) kg (lb) 19 (42) / 37 (82)

880

MODEL

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8)

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 (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

Power Supply Cord A Nil

Protection Device Electronic Control

Indoor

Operation

Range

Outdoor

Operation

Range

Inner Diameter mm/inch 16 / 0.63

Length mm/inch 117.5 / 4.63

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row x Stage x FPI 3 x 12 x 18

Size (W x H x L) mm 590 x 282 x 38.1

Fin Material Aluminium (Blue Coat)

Fin Type Corrugated Fin

Row x Stage x FPI 2 x 24 x 17

Size (W x H x L) mm 36.4 x 504 x 713:684

Power Supply Outdoor Power Supply

Thermostat Electronic Control

Cooling

Heating

Cooling

Heating

INDOOR

OUTDOOR CU-E9SD3UA

Dry Bulb Wet Bulb

Maximum °C/°F 32 / 89.6 23 / 73.4

Minimum °C/°F 16 / 60.8 11 / 51.8

Maximum °C/°F 30 / 86.0

Minimum °C/°F 16 / 60.8 - / -

Maximum °C/°F 46 / 114.8 26 / 78.8

Minimum °C/°F -17.8 / 0 - / -

Maximum °C/°F 24 / 75.2 18 / 64.4

Minimum °C/°F -20 / -4 -21 / -5.8

CS-E9SD3U

- / -

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 outdo temperatu

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 Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C (68°F), outdoor 2/1°C (35°F/33.8°F) 4 Heating extreme low temperature capacity, Input Power and COP measured at 230 V indoor temperature 20°C (68°F), outdoor -7/-8°C

(19.4°F/17.6°F)

Standby power consumption ≤0.7W (when switched OFF by remote control, except under self protection control). Specifications are subjected to change without notice for further improvement.

re of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)

or air

MODEL

Performance Test Condition ARI

Power Supply

Capacity

Running Current A - 4.7 - - 4.2 -

Input Power W 250 920 1.15k 250 920 1.15k

EER

Cooling

Heating

Power Factor % - 94 - - 95 -

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Capacity

Running Current A - 6.3 - - 5.6 -

Input Power W 200 1.25k 1.71k 200 1.25k 1.71k

COP

Power Factor % - 95 - - 97 -

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Min Circuit Ampacity 15.00

Max. Overcurrent Protection 15.00

Max Current (A) / Max Input Power (W) 7.8 / 1.71k

Starting Current (A) 6.30

SEER/HSPF 20.00 / 10.00

INDOOR

OUTDOOR CU-E12SD3UA

Phase, Hz Single, 60

V 208 230

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

kW 1.20 3.36 3.90 1.20 3.36 3.90

BTU/h 4100 11500 13300 4100 4100 13300

W/W 4.80 3.64 3.39 4.80 3.64 3.39

BTU/hW 16.40 12.50 11.55 16.40 12.50 11.55

dB-A 35 / 28 / 25 35 / 28 / 25

Power Level dB 51 / - / - 51 / - / -

dB-A 49 / - / - 49 / - / -

Power Level dB 64 / - / - 64 / - / -

kW 1.20 4.05 4.77 1.20 4.05 4.77

BTU/h 4100 13800 16300 4100 13800 16300

W/W 6.00 3.24 2.79 6.00 3.24 2.79

BTU/hW 20.50 11.00 9.50 20.50 11.00 9.50

dB-A 35 / 28 / 25 35 / 28 / 25

Power Level dB 51 / - / - 51 / - / -

dB-A 51 / - / - 51 / - / -

Power Level dB 66 / - / - 66 / - / -

CS-E12SD3UAW

MODEL

INDOOR

OUTDOOR CU-E12SD3UA

CS-E12SD3UAW

Type Hermetic Motor / Rotary

Compressor

Motor Type Brushless (4-poles)

Output Power 700

Type Sirocco

Material GFZ010A / GF20

Motor Type DC Motor (8-poles)

Output Power W 51

Cool rpm

Heat rpm 800

Cool rpm 940

Heat rpm 880

Cool rpm

1120

Heat rpm 1090

Cool rpm

1300

Heat rpm 1300

Cool rpm

Heat rpm

1430

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan

Material PP

Motor Type DC Motor (8-poles)

Output Power W 40

Outdoor Fan

Speed Hi

Cool rpm 830

Heat rpm 820

Moisture Removal L/h (Pt/h) 0.8 (1.7)

QLo

Indoor Airflow

SHi

Outdoor Airflow Hi

Cool m

Heat m3/min (ft3/min) 8.50 (300)

Cool m

Heat m3/min (ft3/min) 9.30 (328)

Cool m

Heat m3/min (ft3/min) 11.40 (403)

Cool m

Heat m3/min (ft3/min) 13.50 (475)

Cool m

Heat m3/min (ft3/min) 14.80 (523)

Cool m

Heat m3/min (ft3/min) 31.2 (1100)

/min (ft3/min) 9.30 (328)

/min (ft3/min) 9.90 (350)

/min (ft3/min) 11.70 (413)

/min (ft3/min) 13.50 (475)

/min (ft3/min) 14.80 (523)

/min (ft3/min) 31.2 (1100)

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm

FV50S (320)

Refrigerant Type g (oz) R410A, 1.08k (38.1)

Height (I/D / O/D) mm (inch) 200 (7-7/8) / 542 (21-11/32)

Dimension

Width (I/D / O/D) mm (inch) 750 (29-17/32) / 780 (30-23/32)

Depth (I/D / O/D) mm (inch) 640 (25-7/32) / 289 (11-13/32)

Weight Net (I/D / O/D) kg (lb) 19 (42) / 37 (82)

880

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 (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

Power Supply Cord A Nil

Protection Device Electronic Control

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)

(19.4°F/17.6°F)

5. Standby power consumption ≤0.7W (when switched OFF by remote control, except under self protection control).

6. Specifications are subjected to change without notice for further improvement.

Inner Diameter mm/inch 16 / 0.63

Length mm/inch 117.5 / 4.63

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row x Stage x FPI 3 x 12 x 18

Size (W x H x L) mm 590 x 282 x 38.1

Fin Material Aluminium (Blue Coat)

Fin Type Corrugated Fin

Row x Stage x FPI 2 x 24 x 17

Size (W x H x L) mm 36.4 x 504 x 824:794

Power Supply Outdoor Power Supply

Thermostat Electronic Control

Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

INDOOR CS-E12SD3UAW

OUTDOOR CU-E12SD3UA

Maximum °C/°F 32 / 89.6 23 / 73.4

Minimum °C/°F 16 / 60.8 11 / 51.8

Maximum °C/°F 30 / 86.0 - / -

Minimum °C/°F 16 / 60.8 - / -

Maximum °C/°F 46 / 114.8 26 / 78.8

Minimum °C/°F -17.8 / 0 - / -

Maximum °C/°F 24 / 75.2 18 / 64.4

Minimum °C/°F -20 / -4 -21 / -5.8

MODEL

Performance Test Condition ARI

Power Supply

Capacity

Running Current A - 8.5 - - 7.6 -

Input Power W 430 1.58k 1.82k 430 1.58k 1.82k

EER

Cooling

Heating

Power Factor % - 89 - - 90 -

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Capacity

Running Current A - 9.8 - - 8.7 -

Input Power W 380 1.83k 2.18k 380 1.83k 2.18k

COP

Power Factor % - 90 - - 91 -

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Min Circuit Ampacity 20.0

Max. Overcurrent Protection 25.0

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

Starting Current (A) 9.80

INDOOR CS-E18SD3UAW

OUTDOOR CU-E18SD3UA

Phase, Hz Single, 60

V 208 230

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

kW 1.70 5.04 5.70 1.70 5.04 5.70

BTU/h 5800 17200 19400 5800 17200 19400

W/W 3.95 3.18 3.13 3.95 3.18 3.13

BTU/hW 13.45 10.85 10.65 13.45 10.85 10.65

dB-A 41 / 30 / 27 41 / 30 / 27

Power Level dB 57 / - / - 57 / - / -

dB-A 49 / - / - 49 / - / -

Power Level dB 63 / - / - 63 / - / -

kW 1.70 6.09 7.10 1.70 6.09 7.10

BTU/h 5800 20800 24200 5800 20800 24200

W/W 4.47 3.32 3.26 4.47 3.32 3.26

BTU/hW 15.25 11.35 11.10 15.25 11.35 11.10

dB-A 41 / 32 / 29 41 / 32 / 29

Power Level dB 57 / - / - 57 / - / -

dB-A 51 / - / - 51 / - / -

Power Level dB 65 / - / - 65 / - / -

SEER/HSPF 16.50 / 8.50

MODEL

INDOOR CS-E18SD3UAW

OUTDOOR CU-E18SD3UA

Type Hermetic Motor / Rotary

Compressor

Motor Type Brushless (4-poles)

Output Power 1.70k

Type Sirocco

Material GFZ010A / GF20

Motor Type DC Motor (8-poles)

Output Power W 51

Cool rpm 920

Heat rpm 920

Cool rpm 980

Heat rpm 1000

Cool rpm 1230

Heat rpm 1240

Cool rpm 1480

Heat rpm 1480

Cool rpm 1530

Heat rpm 1530

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan

Material PP

Motor Type DC Motor (8-poles)

Output Power W 60

Outdoor Fan

Speed Hi

Cool rpm 700

Heat rpm 700

Moisture Removal L/h (Pt/h) 2.2 (4.6)

/min (ft3/min) 9.70 (342)

/min (ft3/min) 10.30 (364)

/min (ft3/min) 12.80 (452)

/min (ft3/min) 15.30 (540)

/min (ft3/min) 15.80 (558)

/min (ft3/min) 54.5 (1925)

QLo

Indoor Airflow

SHi

Outdoor Airflow Hi

Cool m

Heat m3/min (ft3/min) 9.70 (342)

Cool m

Heat m3/min (ft3/min) 10.30 (364)

Cool m

Heat m3/min (ft3/min) 12.80 (452)

Cool m

Heat m3/min (ft3/min) 15.30 (540)

Cool m

Heat m3/min (ft3/min) 15.80 (558)

Cool m

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

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FV50S (800)

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

Height (I/D / O/D) mm (inch) 200 (7-7/8) / 795 (31-5/16)

Dimension

Width (I/D / O/D) mm (inch) 750 (29-17/32) / 875 (34-15/32)

Depth (I/D / O/D) mm (inch) 640 (25-7/32) / 320 (12-5/8)

Weight Net (I/D / O/D) kg (lb) 19 (42) / 60 (132)

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 (49.2)

Piping

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

Length for Additional Gas m (ft) 10 (32.8)

Drain Hose

Indoor Heat

Exchanger

Outdoor Heat

Exchanger

Power Supply Cord A Nil

Protection Device Electronic Control

Indoor

Operation

Range

Outdoor

Operation

Range

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)

(19.4°F/17.6°F)

5. Standby power consumption ≤0.7W (when switched OFF by remote control, except under self protection control).

6. Specifications are subjected to change without notice for further improvement.

Inner Diameter mm/inch 16 / 0.63

Length mm/inch 117.5 / 4.63

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row x Stage x FPI 3 x 12 x 18

Size (W x H x L) mm 590 x 282 x 38.1

Fin Material Aluminium (Blue Coat)

Fin Type Corrugated Fin

Row x Stage x FPI 2 x 36 x 19

Size (W x H x L) mm 36.4 x 756 x 869:897

Power Supply Outdoor Power Supply

Thermostat Electronic Control

Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

INDOOR CS-E18SD3UAW

OUTDOOR CU-E18SD3UA

Maximum °C/°F 32 / 89.6 23 / 73.4

Minimum °C/°F 16 / 60.8 11 / 51.8

Maximum °C/°F 30 / 86.0 - / -

Minimum °C/°F 16 / 60.8 - / -

Maximum °C/°F 46 / 114.8 26 / 78.8

Minimum °C/°F -17.8 / 0 - / -

Maximum °C/°F 24 / 75.2 18 / 64.4

Minimum °C/°F -20 / -4 -21 / -5.8

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 Long piping up to 20 meter (E9SD3UA/E12SD3UA) o Long piping up to 30.5 meter (E18SD3UA)

 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

 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

4. Location of Controls and Components

4.1 Indoor Unit

ir outlet

Air inlet

4.2 Outdoor Unit

ir inlet (side)

4.3 Remote Control

Air inlet (rear)

Air outlet

Transmitter

Remote control receiver

Powerful operation

Temperature setting

OFF/ON

Operation mode

Check

Quiet operation

Fan speed selection

Timer setting

Clock setting

Indicator

POWER

TIMER

POWERFUL

QUIET

(Green) (Orange) (Orange) (Orange)

5. Dimensions

5.1 Indoor Unit

145 (5 - 11/16)

(AIR OUTLET DUCT FLANGE)

26 (1 - 1/32)

5 - Ø 3.1 HOLE

(AIR OUTLET DUCT FLANGE)

692 (27 - 1/4)

160 X 4 = 640

96 (3 - 25/32)

2 - Ø 3.1 HOLE

27 (1 - 1/16)

WATER INLET

28 (1-3/32)

84 (3-5/16)

81 (3-3/16)

30 (1-3/16)

10 (3/8)

143 (5-5/8)

80 (3-1/8)

238 (9 - 3/8)

(1 - 23/32)

640 (25 - 3/16)

564 (22 - 3/16)

(AIR INLET)

126 (4 - 31/32)

AIR FILTER

(1-9/16)

23 (1 - 3/32)

155 ( 6 - 3/32)

120 (4 - 23/32)

750 (29 - 17/32)

824 (32 - 7/16)

904 (35 - 9/16)

680 (26 - 25/32)

(AIR INLET)

14 (17/32)

14 (17/32) 14 (17/32)

194 ( 7 - 5/8)

120 (4 - 23/32)33 (1 - 5/16)

DRAIN PORT (UPPER & LOWER)

150 (5 7/8)

200 ( 7- 7/8)

59 (2-5/16)

144.5 (5-11/16)

18 (11/16)

87 (3-13/32)

23 (7/8)

23 (7/8) 23 (7/8)

14 (17/32)

220 (8 - 21/32) 220 (8 - 21/32)132 (5 - 3/16) 132 (5 - 3/16)

63.68 (2-1/2)

Unit : mm/inch

5.2 Outdoor Unit

5.2.1 CU-E9SD3UA CU-E12SD3UA

Space necessary for

installation

10 cm

24.4

(15/16)

(104.7)

(4-3/32)

780 (30-23/32)

570 (22-7/16)

104.9

(4-1/8)

67.6

(2-21/32)

60.5

(2-3/8)

34.5

(1-11/32)

10 cm

100 cm

Anchor Bolt Pitch

320 x 570

Unit : mm/inch

5.2.2 CU-E18SD3UA

Space necessary for

installation

10 cm

100 cm

27.5

(1-1/16)

(131)

(5-5/32)

875 (34-15/32)

613 (24-1/8)

84.8 (3-5/16)

155 (6-3/32)

2-way valve at Liquid side (High Pressure)

3-way valve at Gas side (Low Pressure)

289 (11-13/32)

542 (21-11/32)

61.6

69.6

(2-13/32)

(18)

(2-23/32)

11.5 (7/16)

(11/16)

(2-3/4)

131

(5-5/32)

(3-7/32)

152

(1-1/2)

(5-31/32)

Anchor Bolt Pitch

360.5 x 613

Unit: mm/inch

360.5 (14-3/16)

2-way valve at Liquid side (High Pressure)

3-way valve at Gas side (Low Pressure)

64 (2-1/2)

(2-15/16)

(25)

(31-32)

(2-3/4)

(2-5/16)

795 (31-5/16)

320 (12-5/8)

6. Refrigeration Cycle Diagram

6.1 CS-E9SD3UAW CU-E9SD3UA

INDOOR

LIQUID

SIDE

2-WAY VALV E

INTAKE

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

PIPE

TEMP.

SENSOR 1

PIPE

(INLET)

TEMP.

SENSOR 2

DISCHARGE

MUFFLER

EXPANSION

VALV E

SENSOR

OUTDOOR

PROCESS

TUBE

STRAINER

PIPE

TEMP.

CONDENSER

AIR

TEMP.

SENSOR

COOLING

HEATING

GAS

SIDE

3-WAY VALV E

4-WAYS VALVE

DISCHARGE

MUFFLER

COMPRESSOR TEMP. SENSOR

COMPRESSOR

6.2 CS-E12SD3UAW CU-E12SD3UA

INDOOR

OUTDOOR

INTAKE

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

PIPE

TEMP.

SENSOR 1

PIPE

(INLET)

TEMP.

SENSOR 2

LIQUID

SIDE

2-WAY

VALV E

GAS

SIDE

3-WAY VALV E

DISCHARGE

MUFFLER

4-WAYS VALVE

EXPANSION

VALV E

STRAINER

PIPE

TEMP.

SENSOR

CONDENSER

AIR

TEMP.

SENSOR

COOLING HEATING

DISCHARGE

MUFFLER

COMPRESSOR TEMP. SENSOR

COMPRESSOR

6.3 CS-E18SD3UAW CU-E18SD3UA

INDOOR

OUTDOOR

INTAKE

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

PIPE

TEMP.

SENSOR 1

PIPE

(INLET)

TEMP.

SENSOR 2

LIQUID

SIDE

2-WAY

VALV E

GAS

SIDE

3-WAY

VALV E

4-WAYS VALVE

EXPANSION

VALV E

DISCHARGE

MUFFLER

STRAINERRECEIVER

PIPE

TEMP.

SENSOR

AIR

TEMP.

SENSOR

DISTRIBUTOR

COOLING

HEATING

COMPRESSOR TEMP. SENSOR

COMPRESSOR

7. Block Diagram

7.1 CS-E9SD3UAW CU-E9SD3UA CS-E12SD3UAW CU-E12SD3UA

3 ~

COMPRESSOR

PTC

PTC2

REACTOR

PTC

PTC1

DB101

DB102

NTC

TH2

EXPANSION

VALV E

DB103

FUSE103

FAN MOTOR

C101

RY-C

4-WAYS

VALV E

RY-AC1

RY-PWR

FUSE102

FUSE101

Indoor Unit Outdoor Unit

SINGLE

PHASE

POWER

FUSE

SUPPLY

NOISE FILTER

60Hz

1 Ø 208/230V

CT102

7.2 CS-E18SD3UAW CU-E18SD3UA

3 ~

COMPRESSOR

NTC

TH2

FUSE1

REACTOR

CT400

DB3

DB1

RY-HOT

RY-C

4-WAYS VALVE

CR3

PTC1

RY-PWR2

PTC2

RY-AC

FUSE2

FUSE3

SINGLE PHASE

POWER SUPPLY

AC208 - 230V

60Hz

Indoor Unit Outdoor Unit

TH1

NTC

FUSE

DB2

NOISE FILTER

8. Wiring Connection Diagram

8.1 Indoor Unit

DRAIN PUMP

Y/G

GROUNDING

TERMINAL

1 2

TO OUTDOOR UNIT

TERMINAL

BOARD

MOTOR

Y B W

141

HAJEM-A

(WHITE)

CN-FM

(WHITE)

5 4

CN-DRMTR1

(BLUE)

CN-AC (WHITE)

COMMUNICATION

NOISE FILTER

CIRCUIT

CN-T1

(BLUE)

BL BL

CN-T2 (WHITE) 6

1 1 2 3 4

O O R R

CN-CNT (WHITE)

RECTIFICATION

CIRCUIT

FUSE

T3.15A L250V

ELECTRONIC

CONTROLLER

SW2

SW1

DRAIN TEST

CN-DISP (WHITE)

BR R O Y P B V GR

1 2 3 4 5 6 7 8

1 2 3 4

CN-FSW

(GREEN)

CN-TH

(WHITE)

CN-HT

(WHITE)

5 6 7 8

t˚

BL BL

t˚

BL BL

t˚

FLOAT SWITCH

INDOOR PIPE TEMPERATURE SENSOR 2

INDOOR PIPE TEMPERATURE SENSOR 1

INDOOR AIR TEMPERATURE SENSOR

REMARKS

B: BLUE P:PINK BR: BROWN O: ORANGE BL: BLACK Y: YELLOW W: WHITE GR: GRAY R: RED G: GREEN V: VIOLET Y/G: YELLOW/GREEN

TRANSFORMER

REMOTE CONTROLLER

YBR GRRO VW

1 2 3 4 1 2 3 4

CN-DISP2

(WHITE)

CN-DISP1 (YELLOW)

DISPLAY & RECEIVER

8.2 Outdoor Unit

8.2.1 CU-E9SD3UA CU-E12SD3UA

SINGLE PHASE

POWER SUPPLY

YLW/GRN

REMARKS

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

BLK

TO INDOOR UNIT

(BLACK)2(WHITE)

BLK

WHT

GRN

MOTOR

WHT

GRN

FAN

(RED)

RED

TERMINAL BOARD

DATA (RED)

AC-BLK

(BLK)

FUSE101

20A 250V

AC-WHT (WHT)

FG1 (GRN)

LJP101 (GRN)

1 4

CN-DCFM

(WHT)

COMMUNICATION

CIRCUIT

NOISE FILTER

CIRCUIT

REACTOR

GRY GRY

RAT2

(GRY)

FUSE102

RECTIFICATION

SWITCHING

POWER SUPPLY

CIRCUIT

RAT1

(GRY)

T3.15A L250V

CIRCUIT

T3.15A L250V

ELECTRO-MAGNETIC

COIL (EXPANSION VALVE)

RECTIFICATION

CIRCUIT

FUSE103

CN-STM

(WHT)

CIRCUIT

PFC

CN-TANK

(WHT)

CN-HOT

(WHT)

CN-TH (WHT)

U V

ELECTRONIC CONTROLLER

(RED) (BLU)

(YLW)

1 2 3

1 2

Resistance of Compressor Windings

MODEL CU-E9SD3UA/CU-E12SD3UA

CONNECTION 5RS102XHA21

U-V 1.741 Ω

U-W 1.765 Ω

V-W 1.711 Ω

Note: Resistance at 68°F of ambient temperature.

YELLOW (YEL)

BLUE (BLU)

(TRADEMARK)

COMPRESSOR TERMINAL

THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER

AIR TEMP. SENSOR (THERMISTOR)

t˚

PIPING TEMP. SENSOR (THERMISTOR)

COMPRESSOR TEMP. SENSOR (THERMISTOR)

t˚

YLW

RED BLU YLW

RED (RED)

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

COMPRESSOR

8.2.2 CU-E18SD3UA

SINGLE PHASE POWER SUPPLY

BLK

CIRCUIT

COM3

(RED)

TERMINAL

BOARD

CN-COM

(YELLOW)

CN-BLK (BLACK)

CN-WHT (WHITE)

GRN

L1 L2

RED

(RED)

YLW/GRN

GRN

YLW/GRN

YELLOW (YEL)

BLUE (BLU)

(TRADEMARK)

COMP. TERMINAL

THE PARENTHESIZED LETTERS IS

INDICATED ON THE TERMINAL COVER

WHT

ACN1

(WHITE)

NOISE FILTER

CIRCUIT

FG1 (GREEN)

ELECTRONIC CONTROLLER (NOISE FILTER)

TERMINAL BOARD

WHT

BLK

ACL1 (BLACK)

FUSE3

(25A, 250V)

COMMUNICATION

Resistance of Compressor Windings

MODEL CU-E18SD3UA

CONNECTION 5KD240XAF21

U-V 0.720 Ω

U-W 0.726 Ω

V-W 0.708 Ω

Note: Resistance at 68°F of ambient temperature.

WHT

WHT WHT WHT

WHT

TO INDOOR UNIT

RED

CN-COM

(YELLOW) 4

AC-BLK (BLACK)

BLK

AC-WHT

(WHITE)

ELECTRO-MAGNETIC COIL

(EXPANSION VALVE)

(T3.15A L250V)

CN-EV

(WHITE)

REACTOR

GRY

L2-1

(GRAY)

FUSE2

RY-HOT

ELECTRO-MAGNETIC

COIL (4-WAY VALVE)

BLK L2-0

(BLACK)

RECTIFICATION

CIRCUIT

RECTIFICATION

CIRCUIT

CN-HOT

(BLUE)

BLK

PFC

CIRCUIT

CN-TANK

(WHITE)

t˚

COMP. TEMP.

SENSOR

(THERMISTOR)

ELECTRONIC CONTROLLER (MAIN)

Q10

FUSE1

(T3.15A L250V)

SWITCHING POWER

SUPPLY CIRCUIT

PIPING TEMP.

SENSOR

(THERMISTOR)

(RED)

(BLUE)

(YELLOW)

(WHITE)

CN-TH1 (WHITE)

t˚ t˚

OUTDOOR AIR TEMP. SENSOR (THERMISTOR)

REMARKS

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

COMPRESSOR

RED BLU YLW

RED

BLK

WHT

BLU YLW

RED BLU YLW

FAN MOTOR

CN-FM

U V

1 4

MS 3

9. Electronic Circuit Diagram

9.1 Indoor Unit

NOISE FILTER

CIRCUIT

FUSE

S1WB(A)60

1 1 2 3 4

O O R R

DRAIN PUMP

Y/G

GROUNDING

TERMINAL

1 2

TO OUTDOOR UNIT

TERMINAL

BOARD

MOTOR

HAJEM-A

(WHITE)

B W BL

CN-FM

(WHITE)

5 4

CN-DRMTR1

(BLUE)

CN-AC (WHITE)

COMMUNICATION

CIRCUIT

CN-T1

(BLUE)

BL BL

R20

C32

10k

0.01u

R56

C38

10k

0.01u

RECTIFICATION

CIRCUIT

T3.15A L250V

15.0k

R74

22k

DB3

1/4W

S1WB(A)60

R75

5.1k

C46

0.1u 25V

CN-T2

(WHITE)

CN-CNT

(WHITE)

1000p

R90

10k

C52

50V

SW2

SW1

DRAIN TEST

R62

C30

10V

R63

20.0k 1%

C31

10V

ELECTRONIC

CONTROLLER

IC5

NJM7812FA

DB2

BR R O Y P B V GR

1 2 3 4 5 6 7 8

1 2 3 4

12V

12V g

NONE

CN-DISP

(WHITE)

5 6 7 8

R82

10k

C66

1000p

50V

R89

20.0k 1%

12V

C56

CN-FSW

R65

(GREEN)

C51

10V

10k

1000p

C35

50V

CN-TH

(WHITE)

12V

CN-HT

(WHITE)

FLOAT SWITCH

BL BL

t˚

BL BL

t˚

BL BL

t˚

INDOOR PIPE TEMPERATURE SENSOR 2

INDOOR PIPE TEMPERATURE SENSOR 1

INDOOR AIR TEMPERATURE SENSOR

R32 10k

C17

0.01u

C22

3300p

C34

0.1u 16V

Resistance (kΩ)

14 32 50

Sensor (Thermistor)

Characteristics

Pipe Temp. Sensor

Intake Air Temp. Sensor

68 86 104 122

Temperature (

TRANSFORMER

REMOTE CONTROLLER

YBR GRRO VW

1 2 3 4 1 2 3 4

SW201

CN-DISP2

(WHITE)

C202

0.1uF

R202

C201

47uF

6.3V

R201

10k

CN-DISP1 (YELLOW)

IC201

GP1UM262RK

VOUT

VCC

235

GND

DISPLAY & RECEIVER

LED202

POWER GREEN

LED203

TIMER ORANGE

LED204

POWERFUL ORANGE

LED205

QUIET ORANGE

R2 0

R3 0

R4 0

R5 0

9.2 Outdoor Unit

9.2.1 CU-E9SD3UA CU-E12SD3UA

SINGLE PHASE

POWER SUPPLY

YLW/GRN

BLK

TO INDOOR UNIT

(BLACK)2(WHITE)

WHT

BLK

GRN

WHT

FAN

MOTOR

GRN

(RED)

RED

TERMINAL BOARD

DATA (RED)

AC-BLK

(BLK)

FUSE101

20A 250V

AC-WHT (WHT)

FG1 (GRN)

LJP101 (GRN)

1 4

CN-DCFM

(WHT)

COMMUNICATION

CIRCUIT

NOISE FILTER

CIRCUIT

REACTOR

GRY

RAT2

(GRY)

FUSE102

RECTIFICATION

SWITCHING

POWER SUPPLY

CIRCUIT

GRY

RAT1

(GRY)

T3.15A L250V

RECTIFICATION

CIRCUIT

FUSE103

T3.15A L250V

ELECTRO-MAGNETIC

COIL (EXPANSION VALVE)

CN-STM

(WHT)

D28

D27

D29

R11

15.8k 1%

C6 1u KB

CIRCUIT

10V

PFC

CIRCUIT

C3 1u KB

10V

U V

ELECTRONIC CONTROLLER

D26

R12

15.0k 1%

C7 1u KB 10V

4.99k

(RED) (BLU) (YLW)

13V

CN-TH (WHT)

CN-TANK

(WHT)

CN-HOT

(WHT)

C80

AIR TEMP. SENSOR (THERMISTOR)

t˚

1 2

t˚

3 4

PIPING TEMP. SENSOR (THERMISTOR)

t˚

YLW

RED BLU YLW

COMPRESSOR TEMP. SENSOR (THERMISTOR)

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

COMPRESSOR

14 32 50

Resistance (kΩ)

Sensor (Thermistor)

Characteristics

Outdoor Air Sensor

Outdoor Heat Exchanger Sensor

68 86 104 122

Temperature (

Compressor Temp. Sensor

(Thermistor) Characteristics

Resistance (kΩ)

68 104 140

Temperature (

176 212 248 284

9.2.2 CU-E18SD3UA

SINGLE PHASE POWER SUPPLY

TERMINAL

BLK

WHT

COM3

(RED)

PC8

EL816X

(X)

Q25

0.1A 50V

RT1N432C

R425

20.0k

1/10W

CIRCUIT

ELECTRONIC CONTROLLER

(NOISE FILTER)

BOARD

GRN

YLW/GRN

GRN

L1 L2

WHT

ACN1

(WHITE)

NOISE FILTER

FG1 (GREEN)

CIRCUIT

TERMINAL BOARD

BLK

ACL1 (BLACK)

FUSE3

(25A, 250V)

COMMUNICATION

R426

5.6k

1/10W

TO INDOOR UNIT

RED

R422

680

1/10W

4.7k

10k

Q26

0.2A 50V

2SC3052

R427

47k

1/10W

CN-COM

(YELLOW)

CN-BLK (BLACK)

CN-WHT

(WHITE)

REACTOR

1 12

BLK L2-0

(BLACK)

RECTIFICATION

CIRCUIT

RECTIFICATION

CIRCUIT

C49

6.3V

CN-HOT

(BLUE)

BLK

ELECTRONIC CONTROLLER (MAIN)

PFC

Q10

CIRCUIT

R410

4.99k

1/10W

t˚

COMP. TEMP.

SENSOR

(THERMISTOR)

(T3.15A L250V)

SWITCHING POWER

SUPPLY CIRCUIT

R101

15.8k

1/10W

C46

6.3V

CN-TANK

(WHITE)

FUSE1

R100

15.0k

1/10W

C45

6.3V

PIPING TEMP.

(THERMISTOR)

(RED)

U V

t˚ t˚

SENSOR

U V

(BLUE)

(YELLOW)

CN-FM

(WHITE)

CN-TH1

(WHITE)

OUTDOOR AIR TEMP. SENSOR (THERMISTOR)

COMPRESSOR

RED

BLU

MS 3

YLW

FAN MOTOR

YLW

RED

BLK

WHT

BLU

YLW

GRY

L2-1

(GRAY)

CN-COM

(YELLOW)

WHT WHT WHT WHT

AC-BLK (BLACK)

BLK

WHT

AC-WHT (WHITE)

C84

R159

10k

C63

1000p

50V

(T3.15A L250V)

13V

ELECTRO-MAGNETIC COIL

(EXPANSION VALVE)

FUSE2

RY-HOT

D33 D34 D35 D36

CN-EV

(WHITE)

116

ELECTRO-MAGNETIC COIL (4-WAY VALVE)

Resistance (kΩ)

14 32 50

Sensor (Thermistor)

Characteristics

Outdoor Air Sensor

Outdoor Heat Exchanger Sensor

68 86 104 122

Temperature (

Resistance (kΩ)

68 104 140

Compressor Temp. Sensor

(Thermistor) Characteristics

176 212 248 284

Temperature (

10. Printed Circuit Board

10.1 Indoor Unit

10.1.1 Main Printed Circuit Board

CN-AC

CN-T1

CN-T2

CN-DRMTR1

CN-FM

CN-TH

CN-DISP CN-HTCN-FSWCN-CNT

10.2 Outdoor Unit

10.2.1 Main Printed Circuit Board

10.2.1.1 CU-E9SD3UA CU-E12SD3UA

POWER TRANSISTOR (IPM)

CURRENT

TRANSFORMER

(CT)

AC-WHT

AC-BLK

CN-HOT

CN-TH CN-TANK

CN-DCFM

DATA

10.2.1.2 CU-E18SD3UA

POWER

TRANSISTOR

(IPM)

AC-WHT

CURRENT TRANSFORMER (CT)

CN-COM

AC-BLK

CN-HOT

CN-FM

CN-TANK

CN-EV CN-TH1

10.2.2 CPU Printed Circuit Board

10.2.2.1 CU-E9SD3UA CU-E12SD3UA

CN1 CN2 CN3

10.2.3 Noise Filter Printed Circuit Board

10.2.3.1 CU-E18SD3UA

ACN1

(WHITE)

ACL1

(BLACK)

CN-COM

11. Installation Instruction

 IMPORTANT (ONLY FOR E9SD3UAW AND E12SD3UAW)

This product has been designed and manufactured to meet ENERGY STAR matched with appropriate coil components. However, proper refrigerant charge and proper air flow are critical to achive rated capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging and air flow instructions. Failure to confirm proper charge and airflow may reduce energy

efficiency and shorten equipment life.

Attached Accessories

No. Accessory part Qty.

Remote control

Battery

Remote control holder

ﬁ xing screw

Remote control receiver

No. Accessory part Qty.

Receiver ﬁ

xing screw

(M4 x 39/64" (15.5 mm))

Clamper (band) (for receiver cable ﬁ xing)

Receiver cable (6.56 ft (2 m))

Washer (for suspension ﬁ tting)

Flare insulator (for gas pipe / liquid pipe

connection)

■

Required Materials

 Read the catalog and other technical materials and prepare the required materials.  Applicable piping kit

Applicable piping kit

CZ-3F5, 7BP 3/8" (9.52 mm) 1/4" (6.35 mm)

CZ-4F5, 7, 10BP 1/2" (12.7 mm) 1/4" (6.35 mm)

CZ-52F5, 7, 10BP 5/8" (15.88 mm) 1/4" (6.35 mm)

Piping size

Gas Liquid

 Pipe size reducer (CZ-MA1P) for outdoor Multi connection CS-E12SD3UAW, CS-E18SD3UAW

criteria for energy efficiency when

No. Accessory part Qty.

Clamper (band)

(for ﬂ are & drain insulating

connection)

Drain hose (for unit & PVC pipe

connection) Hose band

(for drain hose connection)

Drain hose insulation

(for drain pipe connection)

Clamper (band) (for power supply cord)

* Be sure to ﬁ x the power supply cord

with clamper (band).

Drain elbow

L=131

■

Other Items to be Prepared (Locally Purchased)

Product name Remarks

Rigid PVC pipe VP20 (outer diameter ø1 1/32" (ø26); also sockets, elbows and other parts as necessary

Adhesive PVC adhesive

Insulation

For refrigerant piping insulation: foamed polyethylene with a thickness of 5/16" (8 mm) or more. For drain piping insulation: foamed polyethylene with a thickness of 13/32" (10 mm) or more.

Indoor/outdoor connecting cable UL listed or CSA approved 4 conductor wires minimum AWG16

Hanging bolt related parts Hanging bolts (M10) (4) and nuts (12), (when hanging the indoor unit)

Insulation of piping connections

• Carry out insulation after checking for gas leaks and secure with vinyl tape.

Vinyl tape

Indoor unit

Outdoor unit

IMPORTANT Begin the installation job from

the “Indoor Unit” installation.

Model

E9SD3UAW 9000

E12SD3UAW 11500

E18SD3UAW 17200

Capa-

city

(Btu/h)

Piping size

Gas Liquid

3/8"

(9.52

mm)

1/2"

1/4"

(12.7

(6.35

mm)

1/2"

(12.7

mm)

Attaching the remote control holder to the wall

Remote control holder ﬁ xing screws

Remote

control

Remote control holder

Max

Min.

Std.

Length

24.6 ft

(7.5 m)

Eleva-

tion

49.2 ft

(15 m)

Length

Piping

9.8 ft

(3 m)

Max.

Piping

Length

65.6 ft

(20 m)

100.0 ft

(30.5 m)

Additional Refri-

gerant

0.2

oz/ft

(20

g/m)

0.3

oz/ft

(25

g/m)

Installation parts you should purchase (

Sleeve (

Piping

Length

for add.

gas

24.6 ft

(7.5 m)

32.8 ft (10 m)

Example: For E9SD3UAW If the unit is installed at 32.8 ft (10 m) distance, the quantity of additional refrigerant should be 1.64 oz (50 g) …. (32.8 - 24.6) ft x 0.2 oz/ft = 1.64 oz. ((10 - 7.5) m x 20 g/m = 50 g).

/16"

(100 mm)

or more

/8"

(1000 mm)

or more

/16"

(100 mm)

or more

(300 mm)

/16"

or more

)

Bushing-Sleeve (

Putty (Gum Type Sealer) (

Bend the pipe as closely on the wall as possible, but be careful that it doesn’t break.

Vinyl tape (Wide) (

• Apply after carrying out a drainage test.

• To carry out the drainage test, remove the air ﬁ lters and pour water into the heat exchanger.

Saddle (

Power supply cable (

)

Connection cable (

1/4" (6.35 mm) Liquid side piping

)

(

Gas side piping (

Additional drain hose (

)

It is advisable to avoid more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist.

 This illustration is for explanation purposes only.

The indoor unit will actually face a different way.

11.1 Indoor Unit

11.1.1 Selecting the Installation Location

Take into consideration the following contents when creating the blueprint.

■

Indoor unit installation location

 Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  The location should be strong enough to support the main unit without vibration.  There should not be any heat or steam source nearby.  Drainage should be easy. Avoid locating the drain port close to ditches (domestic wastewater).  Avoid locations above entrances and exits.  Do not block the air intake and discharge passages.  Select the location that enables the cool and warm air to spread out to the entire room.  Locate the indoor unit at least 3.28 ft (1 m) or more away from a TV, radio, wireless appliance, antenna cable and

fluorescent light, and 6.56 ft (2 m) or more away from a telephone.

 Recommended installation height for indoor unit shall be at least 8.27 ft (2.5 m) from floor.

11.1.2 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 19/32"

(15 mm) from the wall.

When the wall is hollow, be sure to use the sleeve for tube assembly to prevent pests from damaging the cables, e.g. mice biting the connection cable.

4 Finish by sealing the sleeve with putty or

caulking compound at the final stage.

Indoor

Sleeve for tube assembly

(ø70 mm)

through hole

Wall

Outdoor

Bushing for

/32"

(15 mm)

Putty or caulking compound

tube assembly

Approx.

/32

" -

(5 - 7 mm)

/32

11.1.3 Installing the Indoor Unit (Installation Embedded in the Ceiling)

11.1.3.1 Preparation Before Installation

 Always provide sufficient entry and exit space to allow installation work, inspection and unit replacement.  Waterproof the rear surface of the ceiling below the unit in consideration of water droplets forming and dropping.

When cooling operation is performed for an extended period under the following conditions, water droplets may form and drop. Attach locally purchased insulation (foamed polyethylene with a thickness of 7/32" (5 mm) or more) to the outside of the indoor unit before installing into the ceiling to improve heat insulation.

 Locations with a dew point inside the ceiling of 73.4°F (23°C) or more  Kitchens and other locations that produce large amounts of heat and steam  Locations where the inside of the ceiling serves as an outside air intake passage

 When installing into a ceiling, select the unit position and airflow direction that enable the cool and warm

air to spread out to the whole room.

 Do not place objects that might obstruct the airflow within 3.28 ft (1 m) below the intake grill.

Required Minimum Space for Installation and Service

/16" (

824) (Suspension bolt pitch)

Min. 7

/8"

564)

200) or

(

Min 3 15/

(

/32

Flange for air outlet duct

" (100 mm) or more for bottom

air intake

200)

Min.

(

Min.

/32" (20) or more

Min. 25/32" (20) or more

Electrical component box

Inspection

access

/32

(

450 x 450)

Refrigerant tubing

Min. 25

/32

(

650) or more

" (200)

Ceiling

" (240)

/16

*H=Min.

 H dimension means the minimum height of the unit installation space.  Select H dimension such that a downward slope of at least 1/100 is ensured. Refer to 11.1.4 “Connecting the

drain piping”

Dimension of the Indoor Unit

" (145)

/32

(640) "

/16

194)

" (564) (Suspension bolt pitch)

" (

/32

(38) "

(126) "

/32

(692) (Flange for air outlet duct)

/16

" (640) (6

/16

" (824) (Suspension bolt pitch)

5-ø

(ø3.1)(Hole)

/32

/16

" (160) x 4)

" (750)

(680)

/32

" (29)

/32

" (66)

/32

1 15/32

5 29/32"

(150)

" (96)

(26)

/16"

Suspension lug

(37)

/32

(27)

Inspection access

/32" X

23/32"

(40) "

/16

1 "

/32

(120)

/32

(14) "

/16

(15)

(23)

/16

(132)

(450x450)

(Field supply)

(22) "

(155)

(23)

/32

" (28)

/32

/16

" (30)

/16

" (81)

(33)

(153)

(14)

/16

(84)

Water inlet

/16

/32

" (150)

" (200)

10-ø

(ø3.1)(Hole)

(220)

/32

(220)

" (704)

* Filter Uninstalled

2-ø

/32

(ø3.1)

(Hole)

(10)

/32

/16

(143)

(80)

" (44)

/32

(132)

(30)

" (238)

/16

/32

(23)

/16

" (14)

In Case of Bottom Intake

1 Remove the frame filter assy as shown in

diagram 1

Air intake

Cover plate

Dummy hole

2 Remove cover plate as shown in diagram 1 3 Fix frame filter assy as shown in diagram 2 4 Fix cover plate as shown in diagram 2 with

the dummy hole downward.

Air

discharge

Dummy hole

Frame Filter Assy

Cover plate

Air discharge

Air intake

Frame Filter Assy

Fixing Frame Filter Assy

Main unit

Filter Assy

In case of bottom side

* Attach the frame ﬁ lter assy to

the main unit while pushing the

In case of back side

tip of the latches in the direction of the arrow.

Ceiling Opening

 Install inspection opening 17 23/32" x 17 23/32" (450 mm x 450 mm) on the control box side where maintenance

and inspection of the control box and drain pump are easy. Install another inspection opening 31 1/2" x 27 9/16" (800 mm x 700 mm) also at the lower part of the unit.

/16

" (700)

700

Air

discharge

Inspection access

Air intake

Ceiling

Allow view A

(Field supply)

" (800)

800

Securing the Hanging Bolts

Reinforced concrete

Hanging bolt M10

/2" (114)

Approx.

Insert hole-in anchor, etc.

”

Ceiling surface

Wooden of other structure

/16

" (40)

t =

" (2)

/32

/16

" (30)

(Hanging bolt pitch)

Hanging bolt

C channel

Hanging ﬁ

xture

Hanging bolt M10

Reinforcing materials

/32

" to

" (144)

Approx.

") (60 to 90 mm)

Roof beam

Ceiling surface

 Secure the hanging bolts (M10, locally purchased) firmly in a manner capable of supporting the unit weight.  Consult your construction or interior contractor for details on finishing the ceiling opening.

Installing an Intake and Discharge Duct Type

 Ensure the range of unit external static pressure is not exceeded. Refer technical manual for the range of

external static pressure setting.

 Connect the duct as shown.  When attaching duct to the intake side, remove the product filter frame assy and replace with locally purchase

intake-side flange by using flange by using 10 - Ø 1/8" (Ø 3.1)(hole) screws.

 Wrap the flange and duct connection area with aluminium tape or similar to prevent air leak.

Flange

(locally purchase)

Connection screw (x10)

Rectangular solic duct

Main unit

Flange

Insulation material (locally purchased)

Air outlet sideAir inlet side

When attaching a duct to the intake-side, be sure to attach an air filter inside the air passage on the intake-side. (Use an air filter with dust collecting efficiency at least 50% in a gravimetric technique.)

Installation into the Ceiling

 Attach the nuts and washers to the hanging bolts, then lift up and hook the main unit onto the hanging fixtures.  Check if the unit is leveled using a level or a vinyl hose filled partially with water.

Hanging bolt (M10) (locally purchased)

Washer

Level

Hexagonal nut (M10) (locally purchased)

Mounting Remote Controller Receiver

Install the remote controller receiver cable at least 1 31/32" (50 mm) away from electric wires of other appliances to avoid miss-operation (electromagnetic noise).

1 Remove the bottom case.

Insert the driver and slightly turn.

Bottom case

Flat-blade screwdriver

Attention

Mounting the bottom case

Screws

 Tighten the screws securely until the screw heads

touch the bottom case. (Otherwise, loose screw heads may hit the PCB and cause malfunction when mounting the top case.)

 Do not over-tighten the screws. (The bottom case

may be deformed, resulting in fall of the unit.)

Connecting the remote control wiring  Arrange the wires as shown in the illustration for 2 as in diagram below, avoiding unnecessary wires being

stored in the case. (Caught wires may destroy the PCB.)

 Avoid wires touching parts on the PCB. (Caught wires may destroy the PCB.)

2 Mount to the wall.

EXPOSED TYPE

Preparation: Make 2 holes for screws using a driver.

Mount the top case.

• Align the claws of the top case and then align the claws of the bottom case.

Cut here with

a nipper and

remove the burr

le.

with a ﬁ

Claw (2 places)

Claw

Wood screw (supplied)

Connect the remote control wiring.

• Arrange the wires along the groove of the case.

Mount the bottom case to the wall.

Wall to ﬁ x the receiver

Hole for screw

Preparation: Make 2 holes for screws using a driver.

Mount the top case.

• Align the claws of the top case and then align the claws of the bottom case.

Avoid the wire being caught.

Claw (2 places)

EMBEDDED TYPE

Mount the bottom case to the wall.

• Pass the wire through the hole in the centre of the bottom case.

Claw

Hole for screw

Wood screw (supplied)

Connect the remote control wiring.

Top case (Back side)

Bottom case (Back side)

Clamper 7

(supplied)

Pass through the hole

Terminal board

Top case (Back side)

Bottom case (Back side)

 Connect the indoor unit and the remote control receiver 5. (Refer to the illustration.)  Fix the green wire from receiver cable 8 to the grounding location provided inside control board.

Control box

Receiver cable

Remote control

receiver

11.1.4 Connecting the Drain Piping

 Lay the drain piping so as to ensure drainage.  Use a locally purchased VP20 general rigid PVC pipe (outer diameter ø1 1/32" (ø26)) for the drain piping and

firmly connect the indoor unit and the drain piping using supplied hose band to ensure that no leakage occurs.

 Drain piping located indoor should always be insulated by wrapping with locally purchased insulation (foamed

polyethylene with a thickness of 13/32" (10 mm) or more).

 The drain piping should have a downward gradient (1/100 or more) and should be secured by using pipe hanging

equipment to avoid creating hills or traps partway.

 Should there be any obstacle preventing the drain piping from being extended smoothly, the drain piping can be

raised outside of the main unit as shown in the illustration below.

Rise

At least 1/100

Good

Hill

" (300 mm) or less

/16

11 (not a downward gradient)

/16

" (500 mm) or less

Tr ap

Unit drain port

Do not use adhesive.

Drain hose insulation

Hose band

Drain hose

Hard PVC pipe (VP20)

Adhere with

PVC adhesive.

/32" (26)

/32

(26)

(130)

 Strictly do not install and extend the drain piping from the main unit drain water outlet horizontally or upward or raised it 19 11/16" (500 mm)

or more. Doing so may result in poor drainage or drain motor failure.

 Do not use drain hose bent at 90° angle. (The maximum permissible bend is 45°.)

11.1.5 Insulating the Refrigerant Piping

 After the piping is connected, insulate. (Refer to the illustration)

Clamper

Wrap ﬁ rmly with vinyl tape, leaving no gaps.

Unit side

Flare insulator

Wrap ﬁ rmly with vinyl tape, leaving no gaps.

11.1.6 Connect the Cable to the Indoor Unit

 Remove control box cover.  Remove the plugs.  Fix the conduit connections to the knockout holes

together with lock nuts, then secure them against the control box side panel.

 Receiver cable wires 8 must pass through the

upper conduit hole. Make sure the receiver cable is inserted from inside of the control box. Connect receiver cable connector to control box wire connector and fix it to the power supply cord holder as shown in the diagram. Insert firmly the connector of receiver cable 8 to connector at control box of indoor unit.

 Connection cable between indoor unit and

outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes. o Ensure that the terminal numbers on the

indoor unit are connected to the same terminal numbers on the outdoor unit by the right coloured wires as shown in the diagram.

o Earth lead wire should be longer than the

other lead wires as shown in the diagram for electrical safety purpose in case the cord slips out from the anchorage.

o Secure the cable onto the control board with

the holder (clamper).

Terminals on the indoor unit 1 2 3

Colour of wires

Terminals on the outdoor unit 1 2 3

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

Lock Nuts

Control Box

Control Box cover

Knockout holes

Screws

Plugs

Connectors

Fix the receiver cable to the holderFix receiver cable connector

Earth wire

(connection cable)

Indoor/outdoor connection terminal

Holder for

connection cable

Earth wire

(receiver cable)

Indoor/outdoor

connection cable

WARNING

This equipment must be properly earthed.

 Ensure the colour of wires of outdoor unit and the

terminal Nos. are the same to the indoor’s respectively.

 Earth wire shall be Yellow/Green (Y/G) in colour

and longer than other AC wires for safety reason.

11.1.6.1 Wire Stripping and Connecting Requirement

Wire stripping

Indoor/outdoor connection terminal board

10 ± 1 mm

13/32" ± 1/32"

No loose strand when inserted

Do not joint wires

/32" (5 mm)

or more

(gap between wires)

Conductor

fully inserted

Conductor

over inserted

PROHIBITED

Conductor not

fully inserted

PROHIBITED

WARNING

RISK OF FIRE

JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE.

Use complete wire without joining.

Use approved socket and plug with earth pin.

Wire connection in this area must follow to national wiring rules.

11.2 Outdoor Unit

11.2.1 Select the Best Location

11.2.2 Install the Outdoor Unit

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

1 Fix the unit on concrete or rigid frame firmly and horizontally with a bolt nut (ø 13/32" (ø10 mm)). 2 When installing at roof, please consider strong wind and earthquake.

Please fasten the installation stand firmly with bolt or nails.

Model A B C D

E9SD3UAW, E12SD3UAW

E18SD3UAW

22 7/16"

(570 mm)

24 1/8"

(613 mm)

4 1/8"

(105 mm)

5 5/32"

(131 mm)

23/32"

(18.5 mm)

5/8"

(16 mm)

12 19/32" (320 mm)

14 3/16"

(360.5 mm)

11.2.3 Connect the Piping

11.2.3.1 Connecting the Piping to Indoor

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

Connect the piping  Align the center of piping and sufficiently tighten

the flare nut with fingers.

 Further tighten the flare nut with torque wrench in

specified torque as stated in the table.

11.2.3.2 Connecting the Piping to Outdoor

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

11.2.3.3 Connecting the Piping to Outdoor Multi

Do not over tighten, overtightening may cause gas leakage.

Piping size Torque

1/4" (6.35 mm) 13.3 Ibf•ft [18 N•m (1.8 kgf•m)]

3/8" (9.52 mm) 31.0 Ibf•ft [42 N•m (4.3 kgf•m)]

1/2" (12.7 mm) 40.6 Ibf•ft [55 N•m (5.6 kgf•m)]

5/8" (15.88 mm) 47.9 Ibf•ft [65 N•m (6.6 kgf•m)]

3/4" (19.05 mm) 73.8 Ibf•ft [100 N•m (10.2 kgf•m)]

Spanner or Wrench

To rq u e wrench

Male side

(Auxiliary pipe)

Wrench

(Adjustable Wrench)

Male side

(Auxiliary pipe)

Wrench

(Adjustable Wrench)

Torque Wrench for Flare Nut and Pipe Size Reducer

Hall Union

Flare Nut

Packing

(Connection pipe)

Torque Wrench for Flare Nut

Pipe Size Reducer

Female side

Applicable to Liquid and Gas side of CS-E9SD3UAW

Liquid side of CS-E12SD3UAW CS-E18SD3UAW

Flare Nut

(Connection pipe)

Applicable to Gas side of CS-E12SD3UAW CS-E18SD3UAW

Female side

11.2.3.4 Gas Leak Checking

Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system. If the pressure holds, release the nitrogen and proceed to section 4.

11.2.4 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.

Indoor unit

Vacuum

pump

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. 2 Connect the micron gauge between vacuum pump and service port of outdoor units. 3 Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull

down to a value of 500 microns. 4 To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off

the vacuum pump. 5 Disconnect the vacuum pump house from the service port of the 3-way valve. 6 Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf•ft (18 N•m) with a torque wrench. 7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “Open”

using a hexagonal wrench (5/32" (4 mm)). 8 Mount valve caps onto the 2-way valve and the 3-way valve.

o Be sure to check for gas leakage.

 If micron gauge value does not descend 500 microns, take the following measures:

- If the leak stops when the piping connections are tightened further, continue working from step 3.

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

- Do not release refrigerant during piping work for installation and reinstallation.

- Be careful with the liquid refrigerant, it may cause frostbite.

Liquid side

Gas side

Two-way valve

Three-way valve

Outdoor unit

11.2.5 Connect the cable to the Outdoor Unit

 For model E9SD3UAW, E12SD3UAW

1 Remove Top panel. 2 Remove Control Board Cover (Resin and

Metal). 3 Remove Plugs. 4 Fix the conduit connectors to the knockout

holes with lock-nuts, then secure them against

Control Board Cover (Resin)

Control Board Metal Cover

the side panel. 5 All wires pass through conduits. 6 Connection cable between indoor unit and

outdoor unit should be UL listed or CSA

approved 4 conductor wires minimum AWG16

in accordance with local electric codes. 7 Wire connection to the power supply

(208/230V 60Hz) through circuit breaker.

Connectors

o Connect the UL listed or CSA approved

wires minimum AWG14 to the terminal board, and connect the other end of the wires to ELCB / GFCI.

8 Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the

diagram below.

Indoor Unit

208/230V min AWG16

Grounding wire min AWG16

* Ensure all connecting wire

between indoor unit and outdoor unit and power supply cord are installed in individual conduit.

Outdoor Unit

TlanimreT

lanim

L1 L2

Disconnect Switch Field supply

Grounding wire

To p P a ne l

Lock Nuts

Knockout Holes

Plugs

Side Panel

Power Supply Single Phase 208/230V 60Hz min AWG14

Powe r Supply Wires

9 Secure the wire onto the control board with the holder (clamper). 10 After completing wiring connections, reattach the control board cover (Metal and Resin) and the top panel to

the original position with the screws. 11 For wire stripping and connection requirement, refer to instruction 11.1.6 of indoor unit.

Terminal

Board

Earth wire longer

than

other AC wires for

safety

reasons

Powe r

supply cord

Indoor & outdoor connection cable

Earth wire longer than other AC wires for safety reasons

Holder

WARNING

This equipment must be properly earthed.

 Earth lead wire shall be Yellow/Green (Y/G) in colour and should be longer than other lead wires as shown in the

figure for electrical safety in case of slipping.

 For model E18SD3UAW

1 Remove control board cover (Resin and

Metal).

Front Panel

Connecting Wires

Control Board Cover (Metal)

Control Board Cover (Resin)

2 Remove particular plate. 3 Remove plugs. 4 Fix the conduit connectors to the knockout

holes with lock-nuts, then secure them against

Particular

Plate

Lock Nuts

the side panel.

5 All wires pass through conduits & particular

plate’s opening hole.

6 Connecting wire between indoor unit and

outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes.

7 Wire connection to the power supply

(208/230V 60Hz) through circuit breaker. o Connect the UL listed or CSA approved

wires minimum AWG12 to the terminal board, and connect the other end of the wires to ELCB / GFCI.

Knockout Holes

Plugs

Connectors

Particular Plate’s

opening holes

8 Connect the power supply cord and connecting wire between indoor unit and outdoor unit according to the

diagram below.

Indoor Unit

Outdoor Unit

TerminalTerminal

208/230V min AWG16

Grounding wire min AWG16

* Ensure all connecting wire

between indoor unit and outdoor unit and power supply cord are installed in individual conduit.

L1 L2

Disconnect Switch Field supply

Grounding wire

Power Supply Single Phase 208/230V 60Hz min AWG12

9 Secure the wire onto the control board with the holder (clamper). 10 After completing wiring connections, reattach the particular plate and control board cover (metal and resin) to

the original position with the screws.

11 For wire stripping and connection requirement, refer to instruction 11.1.6 of indoor unit.

Terminal

Board

Earth wire longer than others AC wires for safety reasons

Holder

Power

supply cord

Indoor & outdoor connection cable

Terminal

Board

Earth wire longer than others AC wires for safety reasons

Holder

WARNING

This equipment must be properly earthed.

 Earth lead wire shall be Yellow/Green (Y/G) in colour and longer than other lead wires for electrical safety in case

of the slipping.

11.2.6 Piping Insulation

1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation

Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

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

using POLY-E FOAM with thickness 1/4" (6 mm) or above.

Switching the High State Switch (SW2)

 To increase the air volume, open the control box and on the control board, switch the FAN switch (SW2) to “HI”.  See the diagram for “Connecting the Indoor/Outdoor Connection Cable”.

Note: Enabling Long-range Remote Control

 To maintain EMC emission limits, cabling interconnecting the HA terminal and subsequent opto-coupler, must be

no more than 6.2 ft (1.9 m) length.

 Loop four turns of this cable through a suitable small EMC ferrite toroid, and protect with a short length of large

diameter heat-shrink tube.

 There is no similar length limit for cable following on from the opto-coupler isolation.

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

 If a drain elbow is used, the unit should be placed

on a stand which is taller than 1 3/16" (30 mm).

 If the unit is used in an area where temperature

falls below 32°F (0°C) for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

CHECK THE DRAINAGE

Check after connecting the power supply.

 Pour approximately 600 cc of water into the drain

pan of the main unit using a squeeze bottle, etc.

 Press the drain test run switch on the control

board in the control box to start the drain motor and check whether the water drains normally. (The drain motor operates for approximately 5 minutes and then stops automatically.) (See the diagram for “Connecting the Indoor/Outdoor Connection Cable”.)

Install the hose at an angle so that the water smoothly ﬂows out.

Heat exchanger

Drain pan

HoseDrain elbow

Squeeze bottle

Approximately 600 cc of water

12. Operation and Control

12.1 Basic Function

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

12.1.1 Internal Setting Temperature

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

Remote Control Setting Temperature

Setting Temperature Limit Checking

60.8ºF ~ 86ºF

Auto Operation Mode Shifting

(Min: 60.8ºF; Max: 86ºF)

Outdoor Air Temperature Shifting

Powerful Mode Shifting

Fan Speed Shifting

Start-Up Shifting

Setting Temperature Limit Checking

(Min: 60.8ºF; Max: 86ºF)

Internal Setting Temperature

12.1.2 Cooling Operation

12.1.2.1 Thermostat control

 Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -3.6°F continue for 3 minutes.  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 < -3.6°F continue for 3 minutes.  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 > +3.6°F.  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 and indoor intake air temperature.

 During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the

indoor intake air temperature.

 Every 10 minutes, the indoor temperature is judged.  For the 1st judgment

o If indoor intake temperature - remote control setting temperature ≥ 3.6°F, COOL mode is decided. o If -3.6°F ≤ indoor intake temperature - remote control setting temperature < 3.6°F, DRY mode is decided. o If indoor intake temperature - remote control setting temperature < -3.6°F, HEAT mode is decided.

Dry Cool

-1.8 0

1.8

3.6 5.4 7.2 9 10.8

-10.8

Heat

-9

-7.2

-5.4 -3.6

 For the 2nd judgment onwards

o If indoor intake temperature - remote control setting temperature ≥ 5.4°F, if previous operate in DRY mode,

then continue in DRY mode. Otherwise COOL mode is decided.

o If -3.6°F ≤ indoor intake temperature - remote control setting temperature < 5.4°F, maintain with previous

mode.

o If indoor intake temperature - remote control setting temperature < -3.6°F, HEAT mode is decided.

-10.8

Heat

-7.2 -5.4 -3.6

-9

Maintain Cool/Dry

-1.8 0

1.8 3.6

5.4 7.2

9 10.8

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.

Fan Speed

Higher

Medium Lower

abc def ghab

[1 pattern : 10 s]

[Heating]  According to indoor pipe temperature, automatic heating fan speed is determined as follows.

RPM Increased

102ºF

66.2ºF

Indoor Pipe Temp.

RPM Maintain

RPM Reduced

OFF

95ºF

60.8ºF

B. Feedback control

 Immediately after the fan motor started, feedback control is performed once every second.  During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error

counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan motor error is detected. Operation stops and cannot on back.

12.1.7 Outdoor Fan Motor Operation

Outdoor fan motor is operated with 15 fan speed. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

Compressor:

Outdoor Fan:

Fan Speed

30 sec

OFF

12.2 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 Compressor frequency reduced.

12.2.1 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.

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.

12.3 Powerful Mode Operation

When the powerful mode is selected, the internal setting temperature will shift higher up to +10.8°F (for Heating) or lower up to 7.2°F (for Cooling/Soft Dry) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.

12.4 Timer Control

12.4.1 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-) and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.

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

Indoor intake air temperature (ºF)

5 min

15 min

10 min

86 95

Outdoor air

(ºF)

temperature (ºF)

Indoor intake air temperature (ºF)

35 min

30 min

25 min

Outdoor air

(ºF)4132

temperature (ºF)

Cooling/Soft Dry Heating

12.4.2 OFF Timer Control

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

12.5 Auto Restart Control

1 When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within

three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be

selected randomly) after power supply resumes. 2 This type of control is not applicable during ON/OFF Timer setting. 3 This control can be omitted by open the circuit of JP10 at indoor unit printed board.

12.6 Indication Panel

LED OFF/ON Operation

Color Green

Light ON Operation ON

Light OFF Operation OFF

Note:  If OFF/ON operation LED is OFF and OFF indicator does not shown on remote control display, there is an

abnormality operation occurs.

12.7 Electric Heater Control 1

Starting condition

A) When all condition (1+2+3+4+5+6+7) are fulfilled.

1 Operation ON 2 Indoor Heating mode 3 Thermostat ON 4 Temperature different control

Temp difference

(Remote controller setting -

Intake air temperature)

5 Intake air temperature control

(°F)

When air conditioning is

7.2

1.8

switched ON

Heater ON

Heater OFF

ON by Temp difference ≥ 7.2°F

OFF by Temp difference 1.8°F

Example:

1 When air conditioning is switch ON,

Remote controller setting = 82.4°F Intake air temperature = 78.8°F Temp difference = 82.4-78.8 = 3.6°F

Heater ON

2 After a while when

Remote controller setting =82.4°F Intake air temperature = 80.6°F Temp difference = 82.4-80.6 =1.8°F

Heater OFF

3 After a while when

Temp difference ≥ 7.2°F

Heater ON

Intake air temperature [°F]

84.2

78.8

Heater OFF

Heater ON

When air conditioning is

switched ON

6 Evaporator pipe sensor control

Evaporator pipe sensor [°F]

140 ( β )

132.8 ( α )

Heater OFF

Heater ON

When air conditioning is

switched ON

7 Indoor Fan speed ≥ Lo Fan

Control content

1 Electric heater will be switch ON when all condition for starting condition fulfilled. 2 Once Electric heater switched ON, It will operate at least 3 minutes.

12.8 Electric Heater Control 2

 During Error happened, air conditioning unit will stop operation, TIMER LED will blink and indoor vane closed.  Electric heater can be switch ON when fulfill the starting condition as follow except 2 errors.

o H14 (Indoor intake air temperature sensor abnormality) o H19 (Indoor fan motor mechanism lock)

Starting condition

When all condition (1+2+3+4) are fulfilled.

1 Operation ON 2 Indoor Heating mode 3 Error happened Except error H14 and H19 4 Temperature different control

(°F)

(Remote controller setting -

Temp difference

Intake air temperature)

When air conditioning is

3.6

1.8

switched ON

Heater ON

Heater OFF

ON by Temp difference ≥ 3.6°F

OFF by Temp difference 1.8°F

Control content

1 Indoor unit will start operate when receive operation ON signal from remote controller. 2 Indoor fan speed

i) For error

H23 - Indoor heat exchange sensor 1 abnormality

H24 - Indoor heat exchange sensor 2 abnormality

(Fan speed higher than other error because

the outdoor unit compressor will still run at

H27 - Outdoor air temperature sensor abnormality

H28 - Outdoor heat exchange sensor abnormality

preset frequency about 27Hz (H23, H24)

and 40Hz (H27, H28)

ii) Other errors

minimum fan speed = Lo Fan

3 Once Electric heater switched ON, It will operate at least 3 minutes.

Me Fan

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.

E9SD3UA E12SD3UA E18SD3UA

Operation mode X (A) Y (A) X (A) Y (A) X (A) Y (A)

A 3.89 15.01 6.55 15.01 12.39 19.30

Cool

Heating 5.27 15.01 7.05 15.01 12.86 19.30

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

B 3.28 15.01 6.10 15.01 11.43 19.30 C 3.28 15.01 6.10 15.01 10.05 19.30

109.4ºF

102.2ºF

Outdoor air temperature

(C)

(B)

(A)

107.6ºF

100.4ºF

13.1.4 IPM (Power transistor) Prevention Control

 Overheating Prevention Control

1 When the IPM temperature rises to 248°F, compressor operation will stop immediately.

2 Compressor operation restarts after three minutes the temperature decreases to 230°F.

 DC Peak Current Control

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

operation will restart after three minutes.

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

restart after two minutes.

3 If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart

after one minute. If this condition repeats continuously for seven times, all indoor and outdoor relays will be

cut off.

13.1.5 Compressor Overheating Prevention Control

Instructed frequency for compressor operation will be regulated by compressor top temperature. The changes of frequency are as below figure. If compressor temperature exceeds 224.6°F, compressor will be stop, occurs 4 times per 20 minutes, timer LED will be blinking (“F97” is to be confirmed).

224.6ºF

217.4ºF

212ºF

Comp. top temperature

Compressor = OFF

Compressor Frequency

Reduce

Compressor Frequency

Maintain

Free

197.6ºF

195.8ºF

194ºF

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.

77ºF

Free

71.6ºF

Limited

frequency

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 145.4°F.  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:

o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller if fulfilled. o When Cooling or Dry mode is operated more than 20 minutes or more.

3 This control stopped if:

o Compressor stopped. o Remote control setting changed. (fan speed/temperature) o Outdoor air temperature and indoor intake temperature changed.

13.2.4 Freeze Prevention Control

1 When indoor heat exchanger temperature is lower than 32°F continuously for six minutes, compressor will

stop operating. 2 Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 41°F. 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 55.4°F, 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 86°F or above.

13.3.2 Outdoor Air Temperature Control

The maximum current value is regulated when the outdoor air temperature rises above 57.2°F 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 140°F, compressor will stop.

140ºF

131ºF

120.2ºF

Free

OFF

Frequency Reduced

Frequency Limited

114.8ºF

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.

13.3.6 Drain Pump Control

 This unit has built-in with drain pump.

Control content  During COOL/DRY mode.

o During COOL/DRY mode, drain pump starts 10 seconds after indoor fan motor starts. o The drain pump turns ON and turns OFF periodically. (ON or OFF duration depends on room temperature).

 After COOL/DRY mode, when unit turns OFF (power standby) or changes to HEAT mode.

o The drain pump turns ON for 60 seconds immediately.

 Error judgment

o When float switch detects ON signal continuously for 2 minutes 30 seconds, error code H21 are shown. o When float switch ON has operated 2 times within 20 minutes, error code H35 are shown.

13.3.7 Pump Down Operation By CN-S

 A convenience method to activate pump down operation.

 Control start condition:

o During power standby condition, short CN-S continuously between 1 second and 10 seconds.

 Control stop condition:

o 480 seconds after pump down operation starts. o CN-S is shorted again during pump down operation.

14. Servicing Mode

14.1 TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)

 The Test Run operation will be activated by short-circuiting CN-S (Pin 1 & 2) at outdoor unit PCB after power

supplied to outdoor unit terminal 1 and 2. The unit forced to run rated frequency cooling operation mode.

14.2 Auto OFF/ON Button

Auto OFF/ON Button pressed

Auto Operation Test Run Operation

5sec

(Forced cooling operation)

Auto OFF/ON Button pressed

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 heard 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 heard at the fifth seconds, in order to

identify the starting of Normal cooling operation.

Within 5 minutes after Normal cooling operation start, the Auto OFF/ON button is pressed for more than

5 seconds. A 3 “beep” sounds will be heard at the fifth seconds, in order to identify the starting of Forced

heating operation.

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

conditioner operation.

Auto OFF/ON button

pressed

Auto Operation

Test Run Operation

(Forced Cooling Operation)

Main unit always continue Test Run (forced cooling) operation

Test Run Operation

(Forced Heating Operation)

Remote Control Number

Switch Mode

Auto OFF/ON Button pressed

ces5ces5

Test Run Operation

(Forced heating operation)

3xpeeB2xpeeBpeeB

ces61ces11ces8ces5

Remote Control Receiving

Sound OFF/ON

potSpotSnoitarepOgnilooClamroNpotS

Beep Beep x 2

Press “AC RESET”, then any

key at remote control

3 REMOTE CONTROL NUMBER SWITCH MODE

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

continuously for more than 11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote

Control Number Switch Mode is in standby condition) and press “AC RESET” button and then press any

button at remote control to transmit and store the desired transmission code to the EEPROM.

There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor

unit. The indoor unit will only operate when received signal with same transmission code from remote control.

This could prevent signal interference when there are 2 or more indoor units installed nearby together.

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

board.

J-A

 During Remote Control Number Switch Mode, press any button at remote control to transmit and store

the transmission code to the EEPROM.

Beep x 3 Beep x 4

Press “AC RESET”, then any

key at remote control

Remote Control Printed Circuit Board

Jumper A (JA) Jumper B (JB) Remote Control No.

Short Open A (Default)

Open Open B

J-B

Short Short C

Open Short D

Press “AC RESET”

at remote control

14.3 Cooling Only Operation (Single connection Only, Multi connection

Cool Only

please refer to Multi outdoor manual)

14.3.1 How to activate and deactivate Cooling Only Operation

AUTO SW

is pressed

Emergency Operation

Forced Cooling Operation

Pit

8s 11s 16s 21s 26s 36s

Forced Heating Operation

Cool Only

Mode Enable/ Disable

Pit PitPitPit PitPitPitPit Peet No

Pit

AC reset code AC reset code AC reset code AC reset code AC reset code

CHECK

code

Remote Control Number Switch Mode

Remote Control Receiving Sound

No Setting Mode

*Operation Time Check Mode

Forced Cooling Operation

The default setting is “Cool Only” mode disable.

A) To enable the “Cool Only” mode, press the AUTO OFF/ON SW for more than 8s and less than 11s, “Pit Pit”

sound will be heard, then release the AUTO OFF/ON SW and press remote controller CHECK button. A short “Pit” sound will be heard. “Cool Only” mode is now enable.

B) To disable the “Cool Only” mode, press the AUTO OFF/ON SW for more than 8s and less than 11s, “Pit Pit”

sound will be heard, then release the AUTO OFF/ON SW and press remote controller CHECK button. A long “Pit” sound will be heard. “Cool Only” mode is now disable.

14.3.2 Operation mode during Cooling Only Operation

The table below show the operation mode comparison when cooling only operation mode activated and deactivated.

Operation mode Cooling Only Operation Mode Activated Cooling Only Operation Mode Deactivated

AUTO

HEAT The unit will stop and Power LED blinking. The unit will run Heating operation.

COOL The unit will run Cooling operation. The unit will run Cooling operation.

DRY The unit will run DRY operation. The unit will run Dry operation.

Force Heating The unit will run Force Cooling operation. The unit will run Force Heating operation.

AUTO (with Timer)

HEAT (with Timer) The unit will not turn ON by the Timer. Power LED blinking.

COOL (with Timer)

DRY (with Timer) The unit will turn ON by the Timer and run DRY operation.

After 30s sampling, regardless of indoor intake or outdoor intake temperature judgement, the unit will run Cooling or DRY operation.

The unit will turn ON by the timer and run Auto Operation. After 30s sampling, regardless of indoor intake or outdoor intake temperature judgement, the unit will run Cooling or DRY operation.

The unit will turn ON by the Timer and run Cooling operation.

** Power LED blinking = 2.5s ON, 0.5s OFF

After 30s sampling, the unit will judge the operation mode base on remote controller temperature setting and Indoor Intake Sensor (New Auto Mode) or Outdoor Intake Sensor (Old Auto Mode)

The unit will turn ON by the timer and run Auto Operation. After 30s sampling, the unit will judge the operation mode base on remote controller temperature setting and Indoor Intake Sensor (New Auto Mode) or Outdoor Intake Sensor (Old Auto Mode)

The unit will turn ON by the timer and run Heating Operation.

The unit will turn ON by the timer and run Cooling Operation.

The unit will turn ON by the timer and run Cooling Dry Operation.

14.4 Remote Controller Room Temperature Thermoshift Control

14.4.1 Purpose

To prevent not enough or over supply of cooling and heating capacity by adjusting the Room Temperature thermoshift by using remote controller.

Temperature can be adjusted are -3°C (-5.4°F), -2°C (-3.6°F), -1°C (-1.8°F), 0°C (0°F), 1°C (1.8°F), 2°C (3.6°F), 3°C (5.4°F)

Thermoshift adjusted by Remote controller will be stored into EEPROM and added into the final target setting temperature.

Function selection added to enable and disable this control.

14.4.2 Control method

Heating mode (using remocon function 58)

Normal display mode

Press SW (t 0secs)

When SW pressed continuously for t 5secs to enter service zone

& press SW’s to choose function 58 (shift 0°C)

Timer Up Down button

Shift -3°C Shift -1°C

Range = -3°C/-2°C/-1°C/0°C/+1°C/+2°C/+3°C

Shift 0°C

Transmit shift code

Shift +1°C

Shift +3°C

1 Press

SW, special setting is immediately cancelled and normal mode starts.

2 If no SW is pressed for 30secs, then special setting mode is cancelled and normal mode starts.

3 Under this function, only

, , & SW’s are effective.

Cooling or Dry mode (using remocon function 59)

Normal display mode

Press SW (t 0secs)

When SW pressed continuously for t 5secs to enter service zone

& press SW’s to choose function 59 (shift 0°C)

Timer Up Down button

Shift -3°C Shift -1°C

Range = -3°C/-2°C/-1°C/0°C/+1°C/+2°C/+3°C

Shift 0°C

Transmit shift code

Shift +1°C

Shift +3°C

1 Press

SW, special setting is immediately cancelled and normal mode starts.

2 If no SW is pressed for 30secs, then special setting mode is cancelled and normal mode starts.

3 Under this function, only

, , & SW’s are effective.

Filter cleaning enable/disable selection

Normal display mode

Press SW to enter customer zone &

press SW’s to choose function 7

Control

Disable

Control Enable

Transmit “Enable or Disable” code

1 Press

SW, special setting is immediately cancelled and normal mode starts.

2 If no SW is pressed for 30secs, then special setting mode is cancelled and normal mode starts. 3 Under this function, only

, & SW’s are effective.

Note: By default if enable.

Auto restart enable/disable selection

Normal display mode

Press SW to enter customer zone &

press SW’s to choose function 10

Control

Disable

Control

Enable

Transmit “Enable or Disable” code

1 Press

SW, special setting is immediately cancelled and normal mode starts.

2 If no SW is pressed for 30secs, then special setting mode is cancelled and normal mode starts.

3 Under this function, only

, , , , & SW’s are effective.

Note: By default if enable.

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.

Normal Pressure and Outlet Air Temperature (Standard)

Cooling Mode

Heating Mode

*Condition: • Indoor fan speed; High

mode and 44.6°F at heating mode

• Compressor operates at rated frequency

Gas pressure

PSI (kg/cm

130.53 ~ 174.04

333.58 ~ 420.60 (23 ~ 29)

• Outdoor temperature 95°F at cooling

(9 ~ 12)

Outlet air

temperature (°F)

53.6 ~ 60.8

96.8 ~ 113

Difference in the intake

and outlet

air temperatures

Less than 14.4°F at the cooling mode Less than 25.2°F at the heating mode

Value of electric

current during operation

Lower than specified

More than 14.4°F

(15 minutes after an

operation is started.)

at cooling mode.

Above 25.2°F

(15 minutes after an

operation is started.)

at heating mode.

Higher than specified

Normal

Dusty condenser

preventing heat radiation

Excessive amount

of refrigerant

• Measuring the air temperature difference

• Measuring electric current during operation

Gas side pressure

Cooling Mode High

Low

Heating Mode

Low

Inefficient compressor

Insufficient refrigerant

Clogged strainer or

capillary tube

Inefficient compressor

Insufficient refrigerant

Clogged strainer or

capillary tube

• Measuring gas side pressure

15.2 Relationship Between the Condition of the Air Conditioner and Pressure and Electric Current

Condition of the

air conditioner

Insufficient refrigerant

(gas leakage)

Clogged capillary tube

or Strainer

Low Pressure High Pressure

     

     

Cooling Mode Heating Mode

Electric current

during operation

Low Pressure High Pressure

Electric current

during operation

Short circuit in the indoor unit

Heat radiation deficiency

of the outdoor unit

Inefficient compression

• Carry out the measurement 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 OFF/ON operation LED OFF.  OFF indicator does not shown on remote control display.  In operation after breakdown repair, the last error code abnormality will be stored in EEPROM.  To make a diagnosis

1 OFF/ON operation LED OFF and the unit automatically stops the operation, but the OFF indicator does not

shown. 2 Press CHECK button continuously for 5 seconds. 3 “- -” will be displayed on the remote controller display. 4 Press timer ▲ or ▼ button on the remote control. The error code “H00” (no abnormality) will be displayed. 5 Every press of the button (▲ or ▼) will increase the error code number. 6 When the displayed error code matches the unit's error code, OFF/ON operation LED will be ON

continuously. 7 The breakdown diagnosis mode will be cancelled by pressing CHECK button continuously for 5 seconds or

wait for 30 seconds.

 AC Reset button

When AC Reset button is pressed, the error code will be reset so that the unit will be able to operate and recheck if any error occurred.

“Check” button

 To display memorized error status:

1 Turn ON the power supply. 2 Press CHECK button continuously for 5 seconds. 3 “- -” will be displayed on the remote controller display. 4 Press timer ▲ or ▼ button on the remote control. The error code "H00" (no abnormality) will be displayed. 5 Every press of the button (▲ or ▼) will increase the error code number. 6 When the displayed error code matches the unit's error code, OFF/ON operation LED will be ON

continuously. 7 The breakdown diagnosis mode will be cancelled by pressing CHECK button continuously for 5 seconds or

wait for 30 seconds.

15.4 Error Codes Table

Diagnosis

display

H00 No abnormality detected ─ Normal operation ─

H11 Indoor/outdoor abnormal communication

H12 Connection capability rank abnormal ─ ─ ─

H14

H15

H16 Outdoor Current Transformer open circuit ─ ─

H19 Indoor fan motor mechanism lock ─ ─

H21 Indoor float switch operation abnormal ─ ─ ─

H23

H24

H27

Abnormality / Protection control

Indoor intake air temperature sensor abnormality

Outdoor compressor temperature sensor abnormality

Indoor heat exchanger temperature sensor 1 abnormality

Indoor heat exchanger temperature sensor 2 abnormality

Outdoor air temperature sensor abnormality

Abnormality

Judgment

> 1 min. after

starting operation

Continue for 5 sec. ─

Continue for 5 sec.

Continue for 5 sec. ─

Continue for 5 sec. O

Emergency

Operation

Indoor fan

operation only

(Cooling only)

Primary location to verify

 Internal/external cable connections  Indoor/Outdoor PCB

 Intake air temperature sensor

(defective or disconnected)

 Compressor temperature sensor

(defective or disconnected)

 Outdoor PCB  IPM (Power transistor) module

 Indoor PCB  Fan motor

 Heat exchanger temperature sensor 1

(defective or disconnected)

 Heat exchanger temperature sensor 2

(defective or disconnected)

 Outdoor temperature sensor

(defective or disconnected)

H28

H30

H32

H34

H35

H36 Gas pipe temperature sensor abnormality Continue for 5 sec. ─

H37

H39

H41 Wiring or piping connection abnormality

H97 Outdoor Fan Motor lock abnormality

H98 Indoor high pressure protection ─ ─

H99

F11

F17 Indoor unit freezing error

F90 PFC control

F91 Refrigeration cycle abnormality

F93 Outdoor compressor abnormal revolution

F95 Cool high pressure protection

F96

F97

Outdoor heat exchanger temperature sensor abnormality

Discharge temperature sensor abnormality

Outdoor heat exchanger temperature sensor 2 abnormality

Outdoor heat sink temperature sensor abnormality

Indoor drain water adverse current abnormal

Outdoor liquid pipe temperature sensor abnormality

Abnormal indoor operating unit or standby units

Indoor heat exchanger anti-freezeing protection

Cooling / Heating cycle changeover abnormality

IPM (power transistor) overheating protection

Outdoor compressor overheating protection

Continue for 5 sec. O

Continue for 5 sec. ─

Continue for 2 sec. ─

─ ─

─

Continue for 2 sec. ─

─ ─

─

3 minutes after

compressor start up

2 times occurrence

within 30 minutes

─

4 times occurrence

within 30 minutes

3 times occurrence

within 30 minutes

4 times occurrence

within 10 minutes

2 times occurrence

within 20 minutes

4 times occurrence

within 20 minutes

4 times occurrence

within 20 minutes

─

4 times occurrence

within 20 minutes

─

 Outdoor heat exchanger temperature

sensor (defective or disconnected)

 Discharge temperature sensor

 Discharge pipe temperature sensor

(defective or disconnected).

 Outdoor heat sink temperature sensor

(defective or disconnected).

 Gas pipe temperature sensor

(defective or disconnected).

 Outdoor liquid pipe temperature

sensor (defective or disconnected).

─

 Outdoor PCB  Outdoor Fan Motor

 Air filter dirty  Air circulation short circuit

 Insufficient refrigerant  Air filter dirty

 4-way valve  V-coil

 Expansion valve leakage  Indoor unit pipe temperature sensor

(check for changes in characteristics and check its resistance)

 Voltage at PFC

 No refrigerant

(3-way valve is closed)

 Outdoor compressor

 Outdoor refrigerant circuit

 Excess refrigerant  Improper heat radiation  IPM (Power transistor)

 Insufficient refrigerant  Compressor

Diagnosis

display

F98 Total running current protection

F99

Abnormality / Protection control

Outdoor Direct Current (DC) peak detection

Abnormality

Judgment

3 times occurrence

within 20 minutes

7 times occurrence

continuously

Emergency

Operation

─

Primary location to verify

 Excess refrigerant  Improper heat radiation

 Outdoor PCB  IPM (Power transistor)  Compressor

Note: “O” - Frequency measured and fan speed fixed.

The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep” sound heard following by pressing the “CHECK” button at Remote Control. Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is changed from one “beep” to four “beep” sounds.

15.5 Self-diagnosis Method

15.5.1 H11 (Indoor/Outdoor Abnormal Communication)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal

transmission is checked whether it is normal.

Malfunction Caused

 Faulty indoor unit PCB.  Faulty outdoor unit PCB.  Indoor unit-outdoor unit signal transmission error due to wiring error.  Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the

indoor and outdoor units.

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent

Caution

Measure the AC voltage at terminal 1 & 2 of outdoor unit terminal board

component breakdown, always switch off the power before remove and connect the component.

Is the measured voltage 230/240V?

YES

Measure the DC voltage at terminal 2 & 3 (communication terminals) of outdoor unit terminal board

Is the measured DC voltage fluctuate between 10~70V?

YES

Measure the AC voltage at terminal 1 & 2 of indoor unit terminal board

Is the measured voltage 230/240V?

YES

Measure the DC voltage at terminal 2 & 3 of indoor unit terminal board

Is the measured DC voltage fluctuate between 10~70V?

AC power supply abnormal fluctuation

Defect in communication circuitry of outdoor unit PCB Replace the PCB

Improper connection at terminals indoor/outdoor Check indoor/outdoor connecting cable

YES

Defect in receiver/transmitter module of the communication circuitry in indoor unit PCB Replace the indoor unit PCB

15.5.2 H12 (Indoor/Outdoor Capacity Rank Mismatched)

Malfunction Decision Conditions

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

Malfunction Caused

 Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted.  Indoor unit or outdoor unit PCBs defective.  Indoor-outdoor unit signal transmission error due to wrong wiring.  Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor

and outdoor units.

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent

Check the indoor and outdoor unit connection wires

Caution

component breakdown, always switch off the power before remove and connect the component.

Is there any wiring error?

Check indoor and outdoor units model number.

Is indoor unit and outdoor unit model numbers matched?

YES

Check the spare part numbers of the indoor and outdoor unit PCBs and compare with their Part Lists

YES

Matched compatibility?

YES

Correct the indoor-outdoor units connection wires

Match the compatible model(s)

Change for the specified indoor or outdoor unit PCB

Replace the indoor and outdoor unit PCBs

15.5.3 H14 (Indoor Intake Air Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the indoor intake air

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Turn off the power

●

Check the connector connection

Is the connector connection normal?

YES

Check the indoor intake air temperature sensor:

●

Plug out connector from t he indoor unit PCB

●

Measure the resistance of the indoor intake air temperature sensor

Is the measured resistance of the indoor intake air temperature sensor matches the value specified in its characteristic chart?

YES

Sensor (Thermistor)

Characteristics

1 Pipe temp. Sensor 2 Intake Air Temp. Sensor

For safety reason and to prevent component

Caution

breakdown, always switch off the power before remove and connect the component.

●

Connector poor contact

●

Correct the connection

●

Defect in indoor intake air tempeature sensor

●

Replace the indoor intake air temperature sensor

●

Defect in indoor unit PCB

●

Replace the indoor unit PCB

Resistance (kΩ)

50 68

Te mp er a tu r e ( ºF )

104 122

15.5.4 H15 (Compressor Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Turn off the power

●

Check the connector connection

Is the connector connection normal?

YES

Check the outdoor compressor temperature sensor:

●

Plug out connector from t he outdoor unit PCB

●

Measure the resistance of the outdoor compressor

temperature sensor

Is the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart?

YES

Compressor Temp. Sensor

(Thermistor) Characteristics

For safety reason and to prevent component

Caution

●

breakdown, always switch off the power before remove and connect the component.

Connector poor contact Correct the connection

Defect in outdoor compressor temperature sensor

Replace the outdoor compressor temperature sensor

Defect in outdoor unit PCB Replace the outdoor unit PCB

Resistance (kΩ)

68 104 140 176 212 248 284

Temperature (

15.5.5 H16 (Outdoor Current Transformer)

Malfunction Decision Conditions

 An input current, detected by Current Transformer CT, is below threshold value when the compressor is

operating at certain frequency value for 3 minutes.

Malfunction Caused

 Lack of gas  Broken CT (current transformer)  Broken Outdoor PCB

Troubleshooting

When abnormality indication starts again

Refer to Service Manual Technical Graph for Temp vs Current and Pressure

Caution

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Suction pressure and running current is normal

Check & replace defected CT

In forced cooling, check suction pressure versus running current

Running current and suction is very low

Check for gas leaking source; Repair or replace defected part(s) Capillary tube/expansion valve blockage; Replace defected part(s)

Running current is much too low and suction pressure is much too high

Compressor Lack Compression Replace Compressor

15.5.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions

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

(feedback of rotation > 2550 rpm or < 50 rpm)

Malfunction Caused

 Operation stops due to short circuit inside the fan motor winding.  Operation stops due to breaking of wire inside the fan motor.  Operation stops due to breaking of fan motor lead wires.  Operation stops due to Hall IC malfunction.  Operation error due to faulty indoor unit PCB.

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Turn off power supply and rotate fan by hand

Caution

Does fan rotate smoothly?

YES

Turn power supply on and operate fan.

Does it rotate?

Turn off power supply and disconnect fan motor connector, then turn power on.

Check the output of fan motor from indoor PCB

Is the motor power supply voltage ~325Vdc (pin 1 & 4) generated?

Is the motor control voltage 15Vdc (pin 5 & 4) generated?

YES

Replace fan motor

Stop fan motor

Check the rotation feedback output from fan motor.

Rotate the fan motor by hand, is the rotation feedback voltage 15Vdc (pin 7 & 4) generated?

YES

Operate the fan, is the rotation command voltage 1~5Vdc (pin 6 & 4) generated?

YES

Replace indoor PCB

Replace fan motor

15.5.7 H23 (Indoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Plug out connector from the indoor unit PCB

●

Measure the resistance of the indoor pipe temperature sensor

Is the connector connection normal?

YES

Check the outdoor air temperature sensor:

●

Plug out connector from t he outdoor unit PCB

●

Measure the resistance of the outdoor intake air temperature sensor

Is the measured resistance of the outdoor intake air temperature sensor matches the value specified in its characteristic chart?

YES

Sensor (Thermistor)

Characteristics

1 Pipe temp. Sensor 2 Intake Air Temp. Sensor

For safety reason and to prevent component

Caution

breakdown, always switch off the power before remove and connect the component.

●

Connector poor contact

●

Correct the connection

●

Defect in outdoor intake air temperature sensor

●

Replace the outdoor intake air temperature sensor

●

Defect in outdoor unit PCB

●

Replace the outdoor unit PCB

Resistance (kΩ)

50 68

Te mp er a tu r e ( ºF )

104 122

15.5.8 H24 (Indoor Pipe Temperature Sensor 2 Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger

temperature sensor 2 are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Plug out connector from the indoor unit PCB

●

Measure the resistance of the indoor pipe temperature sensor

Is the connector connection normal?

YES

Check the outdoor air temperature sensor:

●

Plug out connector from t he outdoor unit PCB

●

Measure the resistance of the outdoor intake air temperature sensor

Is the measured resistance of the outdoor intake air temperature sensor matches the value specified in its characteristic chart?

YES

Sensor (Thermistor)

Characteristics

1 Pipe temp. Sensor 1 & 2 2 Intake Air Temp. Sensor

For safety reason and to prevent component

Caution

breakdown, always switch off the power before remove and connect the component.

●

Connector poor contact

●

Correct the connection

●

Defect in outdoor intake air temperature sensor

●

Replace the outdoor intake air temperature sensor

●

Defect in outdoor unit PCB

●

Replace the outdoor unit PCB

Resistance (kΩ)

50 68

Te mp er a tu r e ( ºF )

104 122

15.5.9 H27 (Outdoor Air Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature

sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Turn off the power

●

Check the connector connection

Is the connector connection normal?

YES

Check the outdoor air temperature sensor:

●

Plug out connector from t he outdoor unit PCB

●

Measure the resistance of the outdoor air temperature sensor

Is the measured resistance of the outdoor air temperature sensor matches the value specified in its characteristic chart?

YES

Sensor (Thermistor)

Characteristics

1 Outdoor Air Sensor 2

Outdoor Heat Exchanger

Sensor

Caution

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

●

Connector poor contact

●

Correct the connection

●

Defect in outdoor air temperature sensor

●

Replace the outdoor air temperature sensor

●

Defect in outdoor unit PCB

●

Replace the outdoor unit PCB

Resistance (kΩ)

14 32 50 68 86 104 122

Temperature (ºF)

15.5.10 H28 (Outdoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature

sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Turn off the power

●

Check the connector connection

Is the connector connection normal?

YES

Check the outdoor heat exchanger temperature sensor:

●

Plug out connector from t he outdoor unit PCB

●

Measure the resistance of the outdoor heat exchanger temperature sensor

Is the measured resistance of the outdoor heat exchanger temperature sensor matches the value specified in its characteristic chart?

YES

Sensor (Thermistor)

Characteristics

1 Outdoor Air Sensor 2

Outdoor Heat Exchanger

Sensor

Caution

●

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Connector poor contact Correct the connection

Defect in outdoor heat exchanger temperature sensor Replace the outdoor heat exchanger temperature sensor

Defect in outdoor unit PCB Replace the outdoor unit PCB

Resistance (kΩ)

14 32 50

68 86

Te mp er a tu r e ( ºF )

104

122

15.5.11 H30 (Compressor Discharge Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.  Faulty sensor.  Faulty PCB.

Troubleshooting

When abnormality indication starts again

Check the connector connection:

●

Turn off the power

●

Check the connector connection

Is the connector connection normal?

YES

Check the outdoor discharge pipe temperature sensor:

●

Plug out connector from t he outdoor unit PCB

●

Measure the resistance of the outdoor discharge pipe

temperature sensor

Is the measured resistance of the outdoor discharge pipe temperature sensor matches the value specified in its characteristic chart?

YES

For safety reason and to prevent

Caution

component breakdown, always switch off the power before remove and connect the component.

●

Connector poor contact

●

Correct the connection

●

Defect in outdoor discharge pipe temperature sensor

●

Replace the outdoor discharge pipe temperature sensor

●

Defect in outdoor unit PCB

●

Replace the outdoor unit PCB

15.5.12 H33 (Unspecified Voltage between Indoor and Outdoor)

Malfunction Decision Conditions

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

Malfunction Caused

 Wrong models interconnected.  Wrong indoor unit and outdoor unit PCBs used.  Indoor unit or outdoor unit PCB defective.

Troubleshooting

When abnormality indication starts again

Caution

Check indoor and outdoor units model number

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Is the indoor and outdoor unit model number matched?

Check indoor and outdoor PCB part number and compare if they matched part list.

Change for the specified indoor or outdoor unit PCB.

YES

●

Match the compatible model (follow specification)

●

Replace the indoor and outdoor unit PCB.

15.5.13 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions

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

Malfunction Caused

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Turn off power supply and rotate fan by hand

Caution

Does fan rotate smoothly?

YES

Turn power supply on and operate fan.

Does it rotate?

Turn off power supply and disconnect fan motor connector, then turn power on.

Check the output of fan motor from outdoor PCB

Is the motor power supply voltage ~325Vdc (pin 7 & 4) generated?

Is the motor control voltage 15Vdc (pin 3 & 4) generated?

YES

Replace fan motor

Stop fan motor

Check the rotation feedback output from fan motor.

Rotate the fan motor by hand, is the rotation feedback voltage 15Vdc (1 & 4) generated?

YES

Operate the fan, is the rotation command voltage 1~5Vdc (pin 2 & 4) generated?

YES

Replace outdoor PCB

Replace fan motor

15.5.14 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing)

Malfunction Decision Conditions

 Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is

operating in heating operation.

 Phenomena: unit is stopping and re-starting very often in heating mode.

Malfunction Caused

 Indoor heat exchanger thermistor  Clogged air filter or heat exchanger  Over-bent pipe (liquid side)

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent

Caution

Check the indoor unit intake air filter

component breakdown, always switch off the power before remove and connect the component.

Is the air filter dirty?

Check the dust accumulation on the indoor unit heat exchanger

Is the indoor unit heat exchanger dirty?

Check the indoor pipe temperature thermistor: Plug out connector (CN-TH) from the indoor unit PCB Measure the resistance of the indoor heat exchanger temperature thermistor

Is the measured resistance of the indoor pipe temperature thermistor matches the value specified in its characteristic chart?

YES

Clean the air filter

Clean the indoor unit heat exchanger

Defect in indoor pipe temperature thermistor Replace the indoor pipe temperature thermistor

Check the piping & installation condition Replace piping / reinstall the unit if necessary

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

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

Malfunction Decision Conditions

 Freeze prevention control takes place (when indoor pipe temperature is lower than 35.6°F)

Malfunction Caused

 Air short circuit at indoor unit  Clogged indoor unit air filter  Dust accumulation on the indoor unit heat exchanger  2/3 way valve closed  Faulty indoor unit fan motor  Refrigerant shortage (refrigerant leakage)  Clogged expansion valve or strainer  Faulty indoor pipe temperature sensor  Faulty indoor unit PCB

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Check the air passage

Caution

Is there any short circuit?

Check the indoor unit air filter

Is the air filter dirty?

Check the dust accumulation on the indoor unit heat exchanger

Is the indoor unit heat exchanger dirty?

Check if 2/3 way valve is closed?

Check if indoor fan motor operates normally?

YES

Check for gas leakage. Is Oil oozing out from the 2/3 way valve?

Check if expansion valve or strainer clogged (ice formed)?

Check the indoor pipe temperature sensor

YES

Provide sufficient air passage

Clean the air filter

Clean the indoor unit heat exchanger

Open the 2/3 way valve.

Replace the indoor unit fan motor and/or indoor unit PCB.

Repair the pipe flare or union nuts Reclaim and recharge refrigerant

Reclaim and recharge with correct amount of refrigerant.

Does it conform to the sensor characteristic chart?

YES

Replace the indoor pipe temperature sensor

Replace the indoor unit PCB

15.5.16 F11 (4-way Valve Switching Failure)

Malfunction Decision Conditions

 When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during

cooling and compressor operating, the 4-way valve is detected as malfunction.

Malfunction Caused

 Indoor heat exchanger (pipe) thermistor  4-way valve malfunction

Troubleshooting

When abnormality starts again

Check the indoor pipe temperature thermistor:

Plug out connector (CN-TH) from the indoor unit PCB Measure the resistance of the indoor heat exchanger temperature thermistor

Is the measured resistance of the indoor pipe temperature thermistor matches the value specified in its characteristic chart?

YES

Problem occurs in heating mode only?

NO, it happen in cooling/dry as well

Is 4-way solenoid valve being energised?

The 4-way valve may have been damaged or wrongly connected between discharge and suction tube

Check connecting tubes to 4-way valve

YES

For safety reason and to prevent component

Caution

Outdoor PCB fault Replace Outdoor PCB

breakdown, always switch off the power before remove and connect the component.

Defect in indoor pipe temperature thermistor Replace the indoor pipe temperature thermistor

YES

4-way valve not working (not energize)

Check CN-HOT connection (4-way valve connector)

Check V-coil attach to solenoid valve

Check valve v-coil continuity

Remove CN-HOT.

Measure continuity

4 WAYS VALVE

Good

continuity

(open)

of the coil

YELLOW

COIL COMPLETE

V-coil fault Replace V-coil only

CN-HOT

(WHT)

Reconnect CN-HOT (4-way valve connector)

Attach and screw the V-coil to solenoid valve

CN-HOT

(VH9-2)

123

4 WAYS

VALVE

* Check gas side pipe – for hot gas flow in cooling mode

Measure voltage supplied to CH-HOT at the start of heating

No supply

Outdoor PCB fault Replace Outdoor PCB

OK (Depending on 4-way valve model)

Reverse solenoid valve faulty Replace the 4-way valve

15.5.17 F90 (Power Factor Correction Protection)

Malfunction Decision Conditions

 To maintain DC voltage level supply to power transistor.  To detect high DC voltage level after rectification.

Malfunction Caused

 During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at

the outdoor unit main PCB senses abnormal DC voltage level for power transistors.

 When DC voltage detected is LOW, transistor switching will turn ON by controller to push-up the DC level.  When DC voltage detected is HIGH (391Vdc – 425Vdc), active LOW signal will send by the controller to turn OFF

relay RY-C.

Troubleshooting

When abnormality indication starts again

Reset the error code and turn on the unit again

Is AC power supply normal fluctuation?

YES

Verify PFC abnormality by measuring DC voltage between DCP(+) and DCN(-) at the capacitor PCB

Is the DC voltage between DCP(+) and DCN(-) normal?

NO (391.2Vdc ~ 425Vdc)

Confirm the DC voltage between CN-FM 1 and 4 when compressor is running. Normal voltage range should be between 265-325Vdc

Is the DC voltage between CN-FM1 and 4 of the outdoor fan motor normal?

Check the compressor winding resistance:

Turn off the power and disconnect the harnesses U, V, and W Measure the winding resistance between U-V, V-W, and W-U

YES (~280Vdc)

AC power supply abnormal surge

Defect in PFC circuitry Replace the outdoor unit PCB

Defect in outdoor fan motor Replace outdoor fan motor

For safety reason and to prevent

Caution

component breakdown, always switch off the power before remove and connect the component.

Are the compressor's winding resistance (U-V, V-W, U-W) uniform?

YES

Check the reactor impedance

Is the impedance of the reactor low?

YES

Defect in compressor Replace compressor

Defect in reactor Replace reactor

15.5.18 F91 (Refrigeration Cycle Abnormality)

Malfunction Decision Conditions

 The input current is low while the compressor is running at higher than the setting frequency.

Malfunction Caused

 Lack of gas.  3-way valve close.

Troubleshooting

When F91 indication happens

For safety reason and to prevent

Caution

Check 3 way valve

component breakdown, always switch off the power before remove and connect the component.

3-way valve opened?

YES

Check for gas leaking source (Refer to H16)

Gas leaking?

NO, gas amount is OK

Check other parts in refrigeration cycles

NO, closed

YES

Open 3 way valve

Check for gas leaking source; Repair or replace defected part(s) Re-claim and then re-charge the right amount

15.5.19 F93 (Compressor Rotation Failure)

Malfunction Decision Conditions

 A compressor rotation failure is detected by checking the compressor running condition through the position

detection circuit.

Malfunction Caused

 Compressor terminal disconnect  Faulty Outdoor PCB  Faulty compressor

Troubleshooting

When F93 indication happens

Caution

Check the U, V and W connector connection:

- Turn OFF the power

- Check the U, V and W connector connection at outdoor PCB and compressor terminal

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Is the connector connection normal?

YES

Disconnect the harnesses U, V and W from the compressor terminal

From the disconnected harnesses U, V and W, correct them to the inverter checker. Turn ON the power and operate the system. Check the inverter checker 6 LEDs blinking condition.

Is the blinking of the 6 LEDs in same sequence/condition?

YES

Connector poor contact Correct the connection

IPM defective Replace outdoor unit PCB

Replace compressor

15.5.20 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry)

Malfunction Decision Conditions

 During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by

the outdoor unit heat exchanger thermistor.

Malfunction Caused

 Outdoor heat exchanger temperature rise due to short-circuit of hot discharge air flow.  Outdoor heat exchanger temperature rise due to defective of outdoor fan motor.  Outdoor heat exchange temperature rise due to defective outdoor heat exchanger thermistor.  Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB.

Troubleshooting

When abnormality indication starts again

Check the outdoor unit installation condition (during cooling or soft dry operation)

Is there any improper heat radiation?

Reset the error code and turn on the unit again

Is the outdoor fan motor operating?

YES

Check the outdoor heat exchanger thermistor:

Turn off the power and disconnect the connector of outdoor heat exchanger thermistor from the PCB Measure the resistance of the outdoor heat exchanger thermistor

Is the measured resistance of the outdoor heat exchanger thermistor matches the value specified in its characteristic chart?

YES

Reinstall the outdoor unit Remove the obstacle(s) Clean the outdoor heat exchanger

Measure the AC/DC voltage between pins of connector CN-FM outdoor unit PCB

Is the voltage supplied to the outdoor fan motor normal?

YES (240VAC / 265~325VDC)

For safety reason and to prevent component

Caution

Defect in outdoor heat exchanger thermistor Replace the outdoor heat exchanger themistor

breakdown, always switch off the power before remove and connect the component.

NO (0V)

Defect in outdoor unit PCB Replace the outdoor unit PCB

Defect in outdoor fan motor Replace the outdoor fan motor

YES

Defect in outdoor unit PCB Replace the outdoor unit PCB

15.5.21 F96 (IPM Overheating)

Malfunction Decision Conditions

 During operating of cooling and heating, when IPM temperature data (212°F) is detected by the IPM temperature

sensor.

Multi Models only

o Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. o Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (194°F) is

detected by the heat sink temperature sensor.

Malfunction Caused

 IPM overheats due to short circuit of hot discharge air flow.  IPM overheats due to defective of outdoor fan motor.  IPM overheats due to defective of internal circuitry of IPM.  IPM overheats due to defective IPM temperature sensor.

Multi Models Only

o Compressor OL connector poor contact. o Compressor OL faulty.

Troubleshooting

When F96 indication happens

Caution

Check the outdoor unit installation condition (during cooling or soft-dry operation)

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Is there any improper heat radiation?

Is outdoor fan motor operating?

YES

Reinstall the outdoor unit Remove the obstacle(s) Clean the outdoor heat exchanger

Replace the outdoor fan motor.

Defect in IPM Replace the outdoor unit PCB

15.5.22 F97 (Compressor Overheating)

Malfunction Decision Conditions

 During operation of cooling and heating, when compressor tank temperature data (233.6°F) is detected by the

compressor tank temperature sensor.

Malfunction Caused

 Faulty compressor tank temperature sensor  2/3 way valve closed  Refrigerant shortage (refrigerant leakage)  Faulty outdoor unit PCB  Faulty compressor

Troubleshooting

When F97 indication happens

Caution

Check the compressor tank temperature sensor.

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Does it conform to the sensor characteristic chart?

YES

2/3 way valve closed?

Check for gas leakage.

Oil oozing out from the 2/3 way valve?

Check if expansion valve or strainer clogged (ice formed)

Reclaim and recharge for a specified amount of fresh refrigerant

Refrigerant cycle abnormality error again?

YES

Replace the compressor tank temperature sensor.

Open the 2/3 way valve.

Repair the pipe flare or union nuts. Reclaim and recharge refrigerant.

Replace expansion valve and/or strainer Reclaim and recharge refrigerant

Replace outdoor unit PCB Replace outdoor unit compressor

Procedure complete

15.5.23 F98 (Input Over Current Detection)

Malfunction Decision Conditions

 During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is

detected by checking the input current value being detected by current transformer (CT) with the compressor running.

Malfunction Caused

 Excessive refrigerant.  Faulty outdoor unit PCB.

Troubleshooting

When F98 indication happens

Caution

Get restarted and measure the input current.

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Input current > limit?

YES

Turn off power supply. Check the main circuit electrolytic capacitor.

Normal?

Check refrigerant amount.

Excess refrigerant?

YES

Replace the outdoor unit PCB.

Repair the pipe flare or union nuts. Reclaim and recharge refrigerant.

Reclaim and recharge with correct amount of refrigerant.

Replace outdoor unit PCB Replace outdoor unit compressor

15.5.24 F99 (DC Peak Detection)

Malfunction Decision Conditions

During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry.

Malfunction Caused

 DC current peak due to compressor failure.  DC current peak due to defective power transistor(s).  DC current peak due to defective outdoor unit PCB.  DC current peak due to short circuit.

Troubleshooting

When abnormality indication starts again

Reset the error code and turn on the unit again

Outdoor electronic circuit defect due to power transistor short Replace the outdoor unit PCB

Amplification IC defect Diode defect Defect in microcontroller Replace the outdoor unit PCB

Excessive amount of refrigerant

For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Compressor defective due to mechanical locked Replace compressor

Compressor defective due to winding shorted Replace compressor

Is there a sound when compressor starts?

YES

Is compressor vibration even?

YES

Is there no change even if all refrigerant is discharged?

YES (Stops after 2, 3 seconds of noise during operation)

Check the compressor winding resistance:

Turn off the power and disconnect the harnesses U, V and W Measure the winding resistance between U-V, V-W and W-U

Are the compressor's winding resistance (U-V, V-W or U-W) shorted?

YES

NO (Compressor stops)

NO (Quite a lot of vibration at start operation)

NO (Normal)

Caution

NO (Normal)

16. Disassembly and Assembly Instructions

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

16.1 Indoor Electronic Controller, Blower Fan, Fan Motor & Drain Motor Removal Procedure.

16.1.1 To Remove Cabinet Bottom Plate

1 Unscrew 14 screws on the cabinet bottom plate, 10 screws on the cabinet top plate and detach cabinet

bottom plate and cabinet top plate from unit.

Remove 14 Screw

Remove 10 Screw

WARNING

Cabinet bottom plate

Cabinet top plate

16.1.2 To Remove Electronic Controller

1 Unscrew the 2 screws on the Control Board and open the Control Board Cover.

Remove Screw

2 Detach all connectors as labeled from the electronic controller. Then pull out main controller gently.

CN-T1

CN-T2

CN-FM

CN-TH

CN-AC

CN-DRMTR1

CN-DISP

CN-FSW

16.1.3 To Remove Fan Motor and Blower Fan

1 Detach the Upper and Inner Casing 2 Disengage the 4 catches (2 each on the left and right) on the Air Guide.

Air guide (Upper)

Catches

Air guide (Bottom)

ir guide (Bottom)

3 Unscrew the 2 screws on the Fan Motor Bracket and detach Fan Motor Bracket. 4 Remove the Fan Motor and Blower Fan from the unit. 5 Use a 3.0 mm hexagonal wrench to loosen the bolts connecting the Fan Motor and Fan. Detach the shaft

connecting the Fan Motor and Blower Fan.

Remove Screw

Remove Bolts

16.1.4 To Remove the Drain Motor

1 Unscrew the 1 screw on the Side Plate and remove Drain Pan from the unit.

Remove Screw

Remove

2 Unscrew 5 screws on the Evaporator and remove 2 sensor from holder and remove Evaporator from the unit.

Remove Screw

Remove Sensor

3 Unscrew 4 screws, 1 nut and 1 Spring Clip on the Drain Motor Bracket and remove Drain Motor from unit.

Spring Clip

Remove Screw

Remove Nut

4 Unscrew 3 screws on the Drain Motor and detach the Drain Motor from Drain Motor Bracket.

Remove Screw

16.2 Outdoor Electronic Controller Removal Procedure

16.2.1 CU-E9SD3UA CU-E12SD3UA

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

1 Remove the 3 screws of the Top Panel.

5 Remove the Control Board as follows:

Fig. 1

2 Remove the 6 screws of the Front Panel.

3 Remove the screw of the Terminal Board

Cover.

4 Remove the Top Cover of the Control Board

by 4 hooks.

Fig. 2

Fig. 4

Fig. 5

Fig. 3

Fig. 6

16.2.2 CU-E18SD3UA

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

1 Remove the 8 screws of the Top Panel.

4 Remove the Control Board.

Fig. 1

2 Remove the 8 screws of the Front Panel.

Fig. 2

3 Remove the Top Cover of the Electronic

Controller.

Fig. 3

Fig. 4

5 Remove the 6 screws of the Electronic

Controller.

Fig. 5

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

100

Panasonic CS-E9SD3UAW, CS-E12SD3UAW, CS-E18SD3UAW, CU-E9SD3UA, CU-E12SD3UA service manual

Specifications and Main Features

Frequently Asked Questions

User Manual