8.4. Automatic Operation 22
8.5. Operation Control
23
8.6. Indoor Fan Speed Control
30
8.7. Outdoor Fan Speed Control
32
8.8. Vertical Airflow Direction Control
32
8.9. Horizontal Airflow Direction Control
33
8.10. Powerful Operation
33
8.11. Quiet Operation
35
8.12. Ionizer Operation
37
8.13. Timer Control
38
8.14. Random Auto Restart Control
38
8.15. Remote Control Signal Receiving Sound
38
9 Operating Instructions
39
10 Installation Instructions
45
10.1. Safety Precautions
45
10.2. Attached accessories
47
10.3. Select the best location
47
10.4. Indoor/Outdoor Unit Installation Diagram
47
10.5. Indoor unit
48
10.6. Outdoor unit
51
11 2-way, 3-way Valve
56
11.1. Air Purging of the Piping and Indoor Unit
57
12 Servicing Information
63
12.1. Distinction Of Lead Free (PbF) Printed Circuit Board
63
12.2. Indoor Electronic Controllers Removal Procedures
63
• High Efficiency
• Compact Design
• Wider range of horizontal discharge air.
• Air Filter with function to reduce dust and smoke.
• Automatic air swing and manual adjusted by Remote
Control for vertical airflow.
• Long installation piping.
− CS/CU-A7DK, CS/CU-A9DK, long piping up to 10
meter.
− CS/CU-A12DK, long piping up to 15 meter.
• Supersonic Air Purifying Device with SUPER alleru-
buster.
− Inactive various harmful airborne elements including
allergen, viruses and bacteria.
− Generated supersonic waves enhance the ability to
collect dust and dirt in the air.
12.3. Indoor Fan Motor And Cross Flow Fan Removal
Procedures
64
12.4. Auto OFF/ON Button
65
12.5. Remote Control Reset
66
13 Troubleshooting Guide
67
13.1. Refrigeration Cycle System
67
13.2. Relationship Between The Condition Of The Air
Conditioner And Pressure And Electric Current
68
13.3. Diagnosis Methods Of A Malfunction Of A Compressor
And 4-way Valve
68
14 Technical Data
69
14.1. Thermostat Characteristics
69
14.2. Operation Characteristics
70
15 Exploded View (Indoor Unit)
73
15.1. CS-A7DKD CS-A9DKD CS-A12DKD
73
16 Replacement Parts List (Indoor Unit)
74
17 Exploded View (Outdoor Unit)
75
17.1. CU-A7DKD CU-A9DKD
75
17.2. CU-A12DKD
76
18 Replacement Parts List (Outdoor Unit)
77
19 Electronic Circuit Diagram
79
19.1. Indoor Unit & Outdoor Unit
79
19.2. Remote Control
85
19.3. Print Pattern Indoor Unit Printed Circuit Board
86
19.4. Print Pattern Indicator & Receiver Printed Circuit Board
88
• Quality Improvement
− Random auto restart after power failure for safety restart
operation.
− Gas leakage protection.
− Prevent Compressor reverse cycle.
− Inner protector to protect Compressor.
− Noise prevention during soft dry operation.
− Blue Coated Condenser for high resistance to corrosion.
• Operation Improvement
− Quiet mode to provide quiet operation.
− Powerful mode to reach the desired room temperature
quickly.
− Ionizer control for generating negative ion in discharge
air.
− 24-hour timer setting.
• Serviceability Improvement
− Removable and washable Front Panel.
1 Features
2
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD /
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