CS-E7NKDW, CS-E9NKDW, CS-E12NKDW, CS-E15NKDW, CS-E18NKDW, CU-E7NKD, CU-E9NKD, CU-E12NKD, CU-E15NKD, CU-E18NKD - Panasonic Air Conditioner Service Manual (repair manual). Page 2

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TABLE OF CONTENTS 
1.
 
Safety Precautions .............................................3
 
2.
 
Specification .......................................................5
 
3.
 
Features.............................................................19
 
4.
 
Location of Controls and Components..........20
 
4.1
 
Indoor Unit ..................................................20
 
4.2
 
Outdoor Unit ...............................................20
 
4.3
 
Remote Control ..........................................20
 
5.
 
Dimensions .......................................................21
 
5.1
 
Indoor Unit ..................................................21
 
5.2
 
Outdoor Unit ...............................................23
 
6.
 
Refrigeration Cycle Diagram ...........................24
 
6.1
 
CU-E7NKD  CU-E9NKD  CU-E12NKD 
CU-E15NKD ...............................................24
 
6.2
 
CU-E18NKD ...............................................25
 
7.
 
Block Diagram ..................................................26
 
7.1
 
CU-E7NKD  CU-E9NKD  CU-E12NKD 
CU-E15NKD ...............................................26
 
7.2
 
CU-E18NKD ...............................................27
 
8.
 
Wiring Connection Diagram ............................28
 
8.1
 
Indoor Unit ..................................................28
 
8.2
 
Outdoor Unit ...............................................30
 
9.
 
Electronic Circuit Diagram ..............................32
 
9.1
 
Indoor Unit ..................................................32
 
9.2
 
Outdoor Unit ...............................................34
 
10.
 
Printed Circuit Board .......................................36
 
10.1
 
Indoor Unit ..................................................36
 
10.2
 
Outdoor Unit ...............................................39
 
11.
 
Installation Instruction.....................................41
 
11.1
 
Select the Best Location.............................41
 
11.2
 
Indoor Unit ..................................................42
 
11.3
 
Outdoor Unit ...............................................46
 
12.
 
Operation and Control .....................................49
 
12.1
 
Basic Function ............................................49
 
12.2
 
Indoor Fan Motor Operation .......................50
 
12.3
 
Outdoor Fan Motor Operation ....................51
 
12.4
 
Airflow Direction..........................................51
 
12.5
 
Quiet operation (Cooling Mode/Cooling area 
of Dry Mode)...............................................52
 
12.6
 
Quiet operation (Heating) ...........................53
 
12.7
 
Powerful Mode Operation...........................53
 
12.8
 
Timer Control..............................................53
 
12.9
 
Auto Restart Control...................................54
 
12.10
 
Indication Panel ..........................................54
 
12.11
 
nanoe-G Operation.....................................55
 
12.12
 
Mild Dry Cooling Operation ........................57
 
12.13
 
ECONAVI and AUTO COMFORT 
Operation....................................................58
 
13.
 
Operation Control (For Multi Split 
Connection).......................................................62
 
13.1
 
Cooling operation .......................................62
 
13.2
 
Soft Dry Operation..................................... 62
 
13.3
 
Heating Operation ..................................... 62
 
13.4
 
Automatic Operation.................................. 63
 
13.5
 
Indoor Fan Motor Operation ...................... 63
 
13.6
 
Powerful Mode Operation.......................... 63
 
13.7
 
Auto restart control .................................... 63
 
13.8
 
Indication Panel ......................................... 63
 
13.9
 
Mild Dry Cooling Operation ....................... 63
 
14.
 
Protection Control........................................... 64
 
14.1
 
Protection Control For All Operations........ 64
 
14.2
 
Protection Control For Cooling & Soft Dry 
Operation................................................... 66
 
14.3
 
Protection Control For Heating 
Operation................................................... 67
 
15.
 
Servicing Mode ................................................ 68
 
15.1
 
Auto OFF/ON Button ................................. 68
 
15.2
 
Remote Control Button.............................. 69
 
16.
 
Troubleshooting Guide................................... 70
 
16.1
 
Refrigeration Cycle System....................... 70
 
16.2
 
Breakdown Self Diagnosis Function.......... 72
 
16.3
 
Error Code Table ....................................... 73
 
16.4
 
Self-diagnosis Method............................... 75
 
17.
 
Disassembly and Assembly Instructions ... 104
 
17.1
 
CS-E7NK  CS-E9NK  CS-E12NK 
CS-E15NK ............................................... 104
 
17.2
 
CS-E18NK ............................................... 108
 
17.3
 
Outdoor Electronic Controller Removal 
Procedure ................................................ 112
 
18.
 
Technical Data ............................................... 114
 
18.1
 
Operation Characteristics........................ 114
 
18.2
 
Sensible Capacity Chart.......................... 134
 
19.
 
Exploded View and Replacement Parts 
List .................................................................. 136
 
19.1
 
Indoor Unit ............................................... 136
 
19.2
 
Outdoor Unit ............................................ 142
 
 
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