10.3. Refrigerant Piping Work 47
10.4. Installation, Transferring, Servicing 49
11 Installation Instructions 53
11.1. Safety Precautions 53
11.2. Indoor Unit 55
11.3. Outdoor Unit 62
12 Servicing Information 66
12.1. Troubleshooting 66
12.2. Breakdown Self Diagnosis Function 68
12.3. Remote Control 70
12.4. Auto OFF/ON Button 71
12.5. Disassembly of Parts 72
13 Technical Data 75
13.1. Operation Characteristics 75
13.2. Sensible Capacity Chart 78
14 Exploded View (Indoor Unit) 79
• Product
− Four modes of operation selection
− Powerful Mode operation
− 24-Hour Real Time Timer Control
− Quiet Mode Operation
− Discharged air can be swung automatically or manually
by remote control
− Air filter with function to reduce dust and smoke.
14.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES 79
14.2. CZ-BT20E (Front Grille Complete) 81
15 Replacement Parts List (Indoor Unit) 82
15.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES 82
15.2. CZ-BT20E (Front Grille Complete) 83
16 Exploded View (Outdoor Unit) 84
16.1. CU-E15DBE CU-E18DBE CU-E21DBE 84
17 Replacement Parts List (Outdoor Unit) 85
17.1. CU-E15DBE CU-E18DBE CU-E21DBE 85
18 Electronic Circuit Diagram 86
18.1. Indoor Unit 86
18.2. Outdoor Unit 90
18.3. Remote Control 95
18.4. Print PatternIndoor Unit Printed Circuit Board 96
18.5. Print PatternOutdoor Unit Printed Circuit Board View 97
• Serviceability Improvement
− Removable and washable Intake Grille
− Breakdown Self Diagnosis function
• Environmental Protection
− Non-ozone-depletion substances refrigerant (R410A)
• Quality Improvement
− Gas leakage detection
− Deice operation
− Auto restart control
1 Features
2
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE