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