Specifications, designs and contents in this Service Manual are subject to change without notice.
2
TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions ............................................. 3
2. Precaution for Using R32 Refrigerant .............. 6
3. Specifications ................................................... 11
4. Features ............................................................. 25
5. Location of Controls and Components .......... 26
5.1 Indoor Unit .................................................. 26
5.2 Outdoor Unit ............................................... 26
5.3 Remote Control .......................................... 26
6. Dimensions ....................................................... 27
6.1 Indoor Unit .................................................. 27
6.2 Outdoor Unit ............................................... 28
7. Refrigeration Cycle Diagram ........................... 31
7.1 CS-Z25UD3RAW CU-Z25UBRA
CS-Z35UD3RAW CU-Z35UBRA ............... 31
7.2 CS-Z50UD3RAW CU-Z50UBRA
CS-Z60UD3RAW CU-Z60UBRA ............... 32
8. Block Diagram .................................................. 33
9. Wiring Connection Diagram ............................ 34
9.1 Indoor Unit .................................................. 34
9.2 Outdoor Unit ............................................... 35
10. Electronic Circuit Diagram .............................. 38
10.1 Indoor Unit .................................................. 38
10.2 Outdoor Unit ............................................... 39
11. Printed Circuit Board ....................................... 42
11.1 Indoor Unit .................................................. 42
11.2 Outdoor Unit ............................................... 43
12. Installation Instruction ..................................... 45
12.1 Indoor Unit .................................................. 46
12.2 Outdoor Unit ............................................... 57
13. Installation and Servicing Air Conditioner
using R32 .......................................................... 62
13.1 About R32 Refrigerant ................................ 62
13.2 Characteristics of R32 Refrigerant ............. 62
13.3 Refrigerant piping installation • Tools used
in services ................................................... 64
13.4 New installation, Relocation, Repairing of
Refrigerant Cycle System The
Procedures ................................................. 68
13.5 Piping installation of R32 ............................ 69
13.6 Installation, Relocation, and Service .......... 70
13.7 Repairing of refrigerant cycle / Brazing
point ............................................................ 74
13.8 <Reference> Analysis method for no error
code, no cooling / no warming .................... 80
14. Operation and Control ..................................... 82
14.1 Basic Function ............................................ 82
14.2 Quiet Operation (Cooling Mode/Cooling
Area of Soft Dry Mode) ............................... 85
14.3 Powerful Mode Operation ........................... 86
14.4 Timer Control .............................................. 86
14.5 Auto Restart Control ...................................86
14.6 Indication Panel ..........................................86
14.7 HA Terminal (HAJEM-A) ............................87
14.8 Drain Pump Control ....................................88
14.9 Pump down Operation by CN-S .................88
14.10 Demand Control .........................................88
15. Operation Control (For Multi Split
Connection) .......................................................89
15.1 Cooling operation .......................................89
15.2 Soft Dry Operation ......................................89
15.3 Heating Operation ......................................89
15.4 Automatic Operation ...................................90
15.5 Indoor Fan Motor Operation .......................90
15.6 Powerful Mode Operation ...........................90
15.7 Auto Restart Control ...................................90
15.8 Indication Panel ..........................................90
16. Protection Control ............................................91
16.1 Protection Control for All Operations ..........91
16.2 Protection Control for Cooling & Soft Dry
Operation ....................................................93
16.3 Protection Control for Heating
Operation ....................................................94
17. Servicing Mode .................................................96
17.1 TEST RUN OPERATION (FOR PUMP
DOWN/SERVICING PURPOSE) ...............96
18. Troubleshooting Guide ....................................97
18.1 Refrigeration Cycle System ........................97
18.2 Breakdown Self Diagnosis Function ...........99
18.3 Error Codes Table ................................... 100
18.4 Self-diagnosis Method ............................. 102
19. Disassembly and Assembly Instructions ... 130
19.1 Indoor Electronic Controller, Blower Fan,
Fan Motor & Drain Motor Removal
Procedure. ............................................... 130
19.2 Outdoor Electronic Controller Removal
Procedure ................................................ 133
20. Technical Data ............................................... 136
20.1 Cool Mode Performance Data ................. 136
20.2 Heat Mode Performance Data ................. 140
20.3 Fan Performance ..................................... 141
21. Service Data ................................................... 145
21.1 Cool Mode Outdoor Air Temperature
Characteristic ........................................... 145
21.2 Heat Mode Outdoor Air Temperature
Characteristic ........................................... 149
21.3 Piping Length Correction Factor .............. 153
22. Exploded View and Replacement Parts
List .................................................................. 156
22.1 Indoor Unit ............................................... 156
22.2 Outdoor Unit ............................................ 161
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