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

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

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