TABLE OF CONTENTS

1.

Safety Precautions

3

2.

Specification

5

3.

Location of Controls and Components

9

 

3.1

Indoor Unit

9

 

3.2

Outdoor Unit

9

 

3.3

Remote Control

9

4.

Dimensions

10

 

4.1

Indoor Unit

10

 

4.2

Outdoor Unit

12

5.

Refrigeration Cycle Diagram

13

 

5.1

CS-S9NKUW-1 CU-S9NKU-1

 

 

 

CS-S12NKUW-1 CU-S12NKU-1

13

 

5.2

CS-S18NKU-1 CU-S18NKU-1

 

 

 

CS-S22NKU-1 CU-S22NKU-1

14

6.

Block Diagram

15

6.1CS-S9NKUW-1 CU-S9NKU-1

 

 

CS-S12NKUW-1 CU-S12NKU-1

................15

 

6.2

CS-S18NKU-1 CU-S18NKU-1

 

 

 

CS-S22NKU-1 CU-S22NKU-1

16

7.

Wiring Connection Diagram

17

 

7.1

Indoor Unit

17

 

7.2

Outdoor Unit

19

8.

Electronic Circuit Diagram

22

 

8.1

Indoor Unit

22

 

8.2

Outdoor Unit

24

9.

Printed Circuit Board

27

 

9.1

Indoor Unit

27

 

9.2

Outdoor Unit

29

10. Installation Instruction

31

 

10.1

S9NKUW-1 S12NKUW-1

31

 

10.2

S18NKU-1 S22NKU-1

39

11. Operation Control

47

 

11.1

Basic Function

47

 

11.2

Indoor Fan Motor Operation

48

11.3Outdoor Fan Motor Operation

(For S9NK and S12NK)

..............................48

11.4Outdoor Fan Motor Operation

(For S18NK and S22NK)

............................48

11.5 Airflow Direction

48

11.6Quiet Operation (Cooling Mode/Cooling Area

 

of Dry Mode)

49

11.7

Powerful Mode Operation

50

11.8

Timer Control

50

11.9

Random Auto Restart Control

50

11.10

Indication Panel

51

12. Protection Control

52

12.1Restart Control (Time Delay Safety Control)..

....................................................................52

12.2

30 Seconds Forced Operation

...................52

12.3

Total Running Current Control

...................52

12.4IPM (Power Transistor) Prevention Control52

12.5Compressor Overheating Prevention Control

(For S18, S22NK only)

53

12.6Low Pressure Protection Control (Gas

 

Leakage Detection)

53

12.7

Low Frequency Protection Control 1

53

12.8

Low Frequency Protection Control 2

53

12.9

Outdoor Air Temperature Control

54

12.10

Cooling Overload Control

54

12.11

Freeze Prevention Control

54

12.12

Freeze Prevention Control 2

54

12.13

Dew Prevention Control

54

13. Servicing Mode

55

13.1

Auto Off/On Button

55

13.2

Remote Control Button

56

14. Troubleshooting Guide

57

14.1

Refrigeration Cycle System

57

14.2

Breakdown Self Diagnosis Function

59

14.3

Error Code Table

60

14.4

Troubleshooting Flowchart

61

15. Disassembly and Assembly Instructions

84

15.1Indoor Electronic Controllers, Cross Flow

 

Fan and Indoor Fan Motor Removal

 

 

Procedures

84

16. Technical Data

88

16.1

Operation Characteristics

88

17. Exploded View and Replacement Parts List. 96

17.1

Indoor Unit

96

17.2

Outdoor Unit

100

2

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Panasonic CS-S22NKU-1, CS-S18NKU-1, CS-S12NKUW-1, CS-S9NKUW-1, CU-S9NKU-1, CU-S12NKU-1, CU-S22NKU-1 Table of Contents

CS-S9NKUW-1, CS-S22NKU-1, CU-S18NKU-1, CS-S18NKU-1, CS-S12NKUW-1 specifications

Panasonic has long been a leader in the HVAC industry, and its latest range of air conditioning units—including the CU-S9NKU-1, CU-S12NKU-1, CU-S22NKU-1, CS-S12NKUW-1, and CS-S18NKU-1—showcases innovative features and robust technologies designed to enhance home comfort while reducing energy consumption.

The CU-S9NKU-1 model is notable for its compact design, making it ideal for smaller spaces without sacrificing performance. It boasts advanced inverter technology, enabling precise temperature control and energy efficiency. The built-in air purification system ensures that indoor air quality remains high, filtering out allergens and pollutants.

Similarly, the CU-S12NKU-1 variant provides a balance of power and efficiency for medium-sized rooms. This model incorporates a quiet operation feature, making it a perfect choice for bedrooms and living areas where noise levels need to be minimized. The adjustable airflow louvers ensure that air is distributed evenly throughout the space.

For larger spaces, the CU-S22NKU-1 stands out with its high cooling and heating capacity. This model is equipped with a dual inverter compressor that enhances both efficiency and performance, providing rapid cooling or heating when needed. The user-friendly remote control and smart connectivity options allow homeowners to adjust settings conveniently, even when they’re away from home.

The CS-S12NKUW-1 model features a sleek design and additional functionalities like the Eco Mode and Sleep Mode. Eco Mode adjusts the power consumption based on the user’s preferences, while Sleep Mode operates at low noise levels, promoting a restful environment during nighttime hours.

Lastly, the CS-S18NKU-1 combines innovative technology with aesthetic appeal. Its modern design is meant to complement contemporary interiors, and its high seasonal energy efficiency ratio (SEER) indicates strong performance in cooling seasons. Additionally, this model includes several energy-saving modes that adapt to changing thermal loads, ensuring that energy wastage is minimized.

Overall, Panasonic’s CU and CS series air conditioning units offer an impressive blend of technology and design, making them suitable for various needs and spaces while focusing on energy efficiency and user comfort. Whether for residential or light commercial use, these models provide reliable, effective solutions for climate control.