3 
TABLE OF CONTENTS 
PAGE     PAGE
1.  Safety Precautions ............................................. 5 
2.  Precaution for Using R32 Refrigerant .............. 8 
3.  Specifications ................................................... 12 
4.  Features ............................................................ 33 
5.  Location of Controls and Components .......... 34 
5.1  Indoor Unit .................................................. 34 
5.2  Outdoor Unit ............................................... 34 
5.3  Remote Control .......................................... 35 
6.  Dimensions ....................................................... 36 
6.1  Indoor Unit .................................................. 36 
6.2  Outdoor Unit ............................................... 38 
7.  Refrigeration Cycle Diagram ........................... 40 
7.1  CS-TZ20ZKEW  CU-TZ20ZKE   
CS-TZ25ZKEW  CU-TZ25ZKE    
CS-TZ35ZKEW  CU-TZ35ZKE   
CS-TZ42ZKEW  CU-TZ42ZKE    
CS-RZ25ZKEW  CU-RZ25ZKE   
CS-RZ35ZKEW  CU-RZ35ZKE .................. 40
 
7.2  CS-TZ50ZKEW  CU-TZ50ZKE   
CS-TZ60ZKEW  CU-TZ60ZKE    
CS-RZ50ZKEW  CU-RZ50ZKE .................. 41
 
7.3  CS-TZ71ZKEW  CU-TZ71ZKE .................. 42 
8.  Block Diagram .................................................. 43 
8.1  Indoor Unit .................................................. 43 
8.2  Outdoor Unit ............................................... 44 
9.  Wiring Connection Diagram ............................ 46 
9.1  Indoor Unit .................................................. 46 
9.2  Outdoor Unit ............................................... 48 
10.  Electronic Circuit Diagram .............................. 50 
10.1  Indoor Unit .................................................. 50 
10.2  Outdoor Unit ............................................... 52 
11.  Printed Circuit Board ....................................... 54 
11.1  Indoor Unit .................................................. 54 
11.2  Outdoor Unit ............................................... 57 
12.  Installation Instruction ..................................... 59 
12.1  Select the Best Location ............................ 59 
12.2  Indoor Unit .................................................. 60 
12.3  Select the Best Location ............................ 69 
12.4  Indoor Unit .................................................. 70 
12.5  Outdoor Unit ............................................... 78 
13.  Installation and Servicing Air Conditioner 
using R32 .......................................................... 83
 
13.1  About R32 Refrigerant ............................... 83 
13.2  Characteristics of R32 Refrigerant ............. 83 
13.3  Refrigerant piping installation • Tools used  
in services .................................................. 85
 
13.4  New installation, Relocation,  
Repairing of Refrigerant Cycle System  
The Procedures .......................................... 89
 
13.5  Piping installation of R32 ............................ 90 
13.6  Installation, Relocation, and Service .......... 91 
13.7  Repairing of refrigerant cycle /  
Brazing point .............................................. 95
 
13.8  <Reference> Analysis method for no error 
code, no cooling / no warming ................. 101 
14.  Operation Control ........................................... 103 
14.1  Basic Function .......................................... 103 
14.2  Indoor Fan Motor Operation ..................... 104 
14.3  Outdoor Fan Motor Operation .................. 105 
14.4  Airflow Direction ....................................... 106 
14.5  Timer Control ............................................ 108 
14.6  Sleep Mode Operation ............................. 109 
14.7  Auto Restart Control ................................. 110 
14.8  Indication Panel ........................................ 110 
14.9  Quiet Operation (Cooling Mode/Cooling  
Area of Dry Mode) .................................... 110
 
14.10  Quiet Operation (Heating) ........................ 111 
14.11  Powerful Mode Operation ........................ 111 
14.12  nanoe
TM 
X Operation ................................ 111 
14.13  Wireless LAN Control ............................... 113 
15.  Operation Control  
(For Multi Split Connection) .......................... 116
 
15.1  Cooling operation ..................................... 116 
15.2  Soft Dry Operation .................................... 116 
15.3  Heating Operation .................................... 116 
15.4  Automatic Operation ................................ 117 
15.5  Indoor Fan Motor Operation ..................... 117 
15.6  Powerful Mode Operation ........................ 117 
15.7  Auto Restart Control ................................. 117 
15.8  Indication Panel ........................................ 117 
16.  Protection Control .......................................... 118 
16.1  Protection Control for All Operations ........ 118 
16.2  Protection Control for Cooling & Soft Dry 
Operation .................................................. 120 
16.3  Protection Control for Heating  
Operation .................................................. 121 
17.  Servicing Mode ............................................... 123 
17.1  Auto OFF/ON Button ................................ 123 
17.2  Heat Only Operation ................................ 124 
17.3  Remote Control Button ............................. 126 
18.  Troubleshooting Guide .................................. 134 
18.1  Refrigeration Cycle System ...................... 134 
18.2  Breakdown Self Diagnosis Function ........ 136 
18.3  Error Codes Table .................................... 137 
18.4  Self-diagnosis Method .............................. 139 
19.  Disassembly and Assembly Instructions .... 169 
19.1  CS-TZ20ZKEW  CS-TZ25ZKEW   
CS-TZ35ZKEW  CS-TZ42ZKEW    
CS-TZ50ZKEW  CS-RZ25ZKEW   
CS-RZ35ZKEW  CS-RZ50ZKEW ............ 169
 
19.2  CS-TZ60ZKEW  CS-TZ71ZKEW ............. 174 
19.3  Replacement Procedure for Indoor 
Electronic Controller and WLAN  
(Part No: J2TD00000001) module ........... 178
 
19.4  To setup Wireless LAN Module and 
Panasonic Comfort Cloud ........................ 180
 
19.5  Outdoor Electronic Controller Removal 
Procedure ................................................. 181