3
Specifications, designs and contents in this Service Manual are subject to change without notice.
TABLE OF CONTENTS
PAGE
1. Safety Precautions ............................................. 4
2. Precaution for Using R32 Refrigerant .............. 7
3. Specifications ................................................... 12
4. Features ............................................................ 20
5. Location of Controls and Components .......... 21
5.1 Indoor Unit .................................................. 21
5.2 Outdoor Unit ............................................... 21
5.3 Remote Control .......................................... 21
6. Dimensions ....................................................... 22
6.1 Indoor Unit .................................................. 22
6.2 Outdoor Unit ............................................... 23
7. Refrigeration Cycle Diagram ........................... 24
7.1 CS-Z50XKEW CU-Z50XKE ...................... 24
7.2 CS-Z71XKEW CU-Z71XKE ...................... 25
8. Block Diagram .................................................. 26
9. Wiring Connection Diagram ............................ 27
9.1 Indoor Unit .................................................. 27
9.2 Outdoor Unit ............................................... 28
10. Electronic Circuit Diagram .............................. 29
10.1 Indoor Unit .................................................. 29
10.2 Outdoor Unit ............................................... 30
11. Printed Circuit Board ....................................... 31
11.1 Indoor Unit .................................................. 31
11.2 Outdoor Unit ............................................... 33
12. Protection Control ............................................ 35
12.1 Protection Control for All Operations.......... 35
13. Disassembly and Assembly Instructions ...... 36
13.1 Indoor Electronic Controllers,
Cross Flow Fan and Indoor Fan Motor
Removal Procedures .................................. 36
13.2 Outdoor Electronic Controller Removal
Procedure ................................................... 42
14. Technical Data .................................................. 43
14.1 Cool Mode Performance Data .................... 43
14.2 Heat Mode Performance Data ................... 44
15. Service Data ...................................................... 45
15.1 Cool Mode Outdoor Air Temperature
Characteristic ............................................. 45
15.2 Heat Mode Outdoor Air Temperature
Characteristic ............................................. 47
15.3 Piping Length Correction Factor ................ 49
16. Exploded View and Replacement Parts
List ..................................................................... 50
16.1 Indoor Unit .................................................. 50
16.2 Outdoor Unit ............................................... 53
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